MINIMUM DESIGN & CONSTRUCTION STANDARDS
TECHNICAL SERVICES DIVISION
MARTIN COUNTY UTILITIES AND SOLID WASTE DEPARTMENT
Revised August 2016
TABLE OF
CONTENTS
Section
I
Title
GENERAL
1.
2.
II
III
Easements
Contractor’s Responsibility for Underground Utility
Installation in Existing Developed Areas
1
1
2
DESIGN GUIDELINES
4
POTABLE WATER SYSTEMS
7
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
IV
Page
Design
Backflow Prevention/Cross Connection
Minimum Cover
Parallel/Horizontal Separation
Layout
Water Main Material
Water Main-Size
Valves and Fittings
Water Sampling Station
Fire Hydrants/Fire Service Mains
Water Service Lines and Taps
Connection to Existing System
Meters/Backflow Prevention Devices
Locator for Water Pipe
Cleaning and Pigging
Pressure Testing
Disinfection and Bacteriological Testing
Installation
Horizontal Directional Drill
SEWAGE SYSTEMS AND GRAVITY SEWERS
1.
2.
3.
4.
5.
6.
7.
8.
Flow
Size
Slopes
Parallel/Horizontal Separation
Installation
Increasing Size, Joining Sewers, Repairs
Alignment
Gravity Sewer Pipe
7
7
8
8
8
8
10
10
11
12
13
14
14
15
16
16
17
17
19
22
22
22
22
23
23
23
24
24
9.
10.
11.
12.
V
VACUUM SEWER SYSTEM
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
VI
Manholes
Inspection and Testing
Infiltration/Exfiltration Tests
Service Connections
General
Pipe Material
Values and Appurtenances
Wire Locator for Vacuum Main
Valve Pits – General
Valve Pits – 2-Piece Type
Valve Pits – 1-Piece Type
1’ Extension for VP4842WT 1-Piece Pit
Flexible Connector
Valve Pit Covers
Vacuum Valve and Valve Pit Interdependence
Vacuum Valve
Vacuum Valve Sensor / Controller
In-Sump Breather
6” Molded Ari-Terminal
Vacuum Sewer Main Installation
Division Valve and Gauge Tap Installation
Valve Pit Installation – General
Valve Pit Installation (2-Piece Pit)
Valve Pit Installation (1-Piece Pit)
AirVac Sump Testing (2-Piece Pit)
AirVac Sump Testing (1-Piece Pit)
Vacuum Line Testing – Daily Testing
Vacuum Line Testing – Final Acceptance Test
Line Flushing
Manufacture’s Field Representative Role and Duties
24
26
27
27
28
28
28
29
30
30
32
33
34
34
34
35
35
36
37
37
38
39
39
40
42
44
44
45
46
47
47
SEWAGE FORCE MAINS
50
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
50
50
51
52
52
53
53
54
54
55
55
56
General
Pipe Material
Parallel/Horizontal Separation
Design Requirements
Valves and Appurtenances
Minimum Cover
Wire locator For Force Main
Connections for Pressure Systems
Cleaning and Pigging
Pressure Testing
Installation
Horizontal Directional Drill
VII
VIII
SEWAGE PUMPING STATION DESIGN AND
CONSTRUCTION
60
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
60
60
60
61
61
61
61
62
62
67
68
68
70
RESIDENTIAL SEWAGE GRINDER PUMPING STATION
DESIGN AND CONSTRUCTION
1.
2.
3.
4.
5.
6.
IX
Type
Structures
Access Covers
Location
Pumps
Guide Bars, Lifting Chains, Hardware
Piping and Valves
Level Sensors
Power Supply and Pump Control Panels
Pump Station Start-Up
Certified Backflow Assembly
Lift Station Telemetry
Grease Traps/Lint Traps
Type
Pumps and Plumbing
Basin Structure and Location
Electrical Service and Control Panel
Maintenance Obligations
Abandoning of Existing Septic Systems
71
71
71
71
72
72
73
RECLAIMED WATER SYSTEMS
74
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
74
76
76
76
76
76
78
78
79
80
81
81
82
82
82
83
84
88
89
General
Backflow Prevention/Cross Connection
Minimum Cover
Parallel/Horizontal Separation
Layout
Reclaimed Water Main Material
Reclaimed Water Main-Size
Valves and Fittings
Reclaimed Water Service Lines and Taps
Connection to Existing System
Meters
Locator for Reclaimed Water Pipe
Cleaning and Pigging
Horizontal Direction Drilling
Pressure Testing
Installation
Metering Facility for Bulk Users
Start-up and Testing
Public Notification
X
PRESSURIZED RECLAIMED CONNECTION CONTROLS
90
1.
2.
3.
4.
90
90
92
94
General
Reclaimed Control Panel (RCP) and SCADA
Reclaimed Water Sensor
Automatic Control Valve
XI
(Future)
96
XII
RECORD DRAWINGS
97
1.
2.
3.
4.
XIII
General
Products
Execution
Close-out
SODDING
1.
2.
3.
4.
5.
6.
7.
Scope
Type of Sod
Water Source
Preparation of Ground
Placing Sod
Watering
Maintenance
97
97
99
100
103
103
103
103
103
104
104
104
XIV
INSPECTIONS AND AUTHORITY OF INSPECTORS
106
XV
MANUAL OF CROSS CONNECTION CONTROL AND
BACKFLOW PREVENTION
107
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
107
107
109
110
111
111
115
118
118
119
120
121
121
122
123
Introduction
General
Prohibition of Cross-Connections
Responsibility
Inspections
Definitions
Potential Hazards and Required Protection
Record Keeping
Fire Systems
Other Cross Connection Hazards
Testing and Backflow Preventers
Penalties for Non-Compliance
Retrofitting Existing Facilities
Reclaimed Water
Review and Update
XVI
APPROVED PRODUCT LIST
A.
B.
C.
D.
XVII
Water
Reclaimed Water
Wastewater
Pump Stations
STANDARD DETAILS
124
124
129
133
135
SECTION I - GENERAL
The requirements set forth in this document are intended to provide a basis for design and
construction. Applicable state environmental laws and regulations should be considered
concurrently with this text. Any variation from standards is to be approved in advance by
the Utilities Director or his designated representative hereinafter known as "Department". It
is intended that the requirements of this section shall be applicable in all cases where the
facilities being constructed or to be constructed shall be owned and/or operated and
maintained by Martin County. These requirements shall also be applicable to those
portions of facilities which will lie within public rights-of-way of Martin County.
The Department's responsibility for ownership, operation and maintenance of water mains
and appurtenances or water service lines shall end at and include the meter. Fire sprinkler
lines shall be owned by the County up to the meter or backflow device. Proper easements
and testing are required for all these lines. The Department will not be responsible for
maintaining sewer services outside the right-of-way or easement without written agreement
by the Department. The Department will not operate, maintain or acquire ownership of any
sewage facilities that are not constructed to County standards. Responsibility for nonstandard lines or lift stations will reside with the developer and assigns. It shall be the
responsibility of the Developer's Engineer to provide proper existing line information, plan
layout, size facilities and prepare plans, all in accordance with these MINIMUM
STANDARDS. These standards may be exceeded at the Developers and/or Engineer's
discretion with specific Department concurrence.
All construction plans shall be approved by the Department prior to commencement of
construction. No construction shall start prior to a pre-construction meeting. No
changes shall be made on approved plans without specific written Department
concurrence. The Department will enforce the approved construction plans to a level
equal to that of our MINIMUM STANDARDS, plus any additional requirements of the
Engineer shown on the plans with our concurrence.
Every effort will be made to
ascertain that the plans and specifications equal or exceed these MINIMUM
STANDARDS. Construction will be enforced to at least these MINIMUM STANDARDS.
1.
Easements
a)
General
Easements for water, reclaimed and sewage mains and appurtenances shall be provided
when the water, reclaimed and sewage facilities are installed outside of road rights-of-way
under Martin County control. The easements may be either shown on the plat or granted
to the County by a separate easement deed. The description for the easement shall be
supplied by the Developer's Engineer or Surveyor and indicated on the record drawings
(OR Book and Page No). In lieu of an easement over a specific portion or portions of the
property, a blanket easement may be provided by the Owner of the land. Easements shall
be in a form suitable and acceptable to the County. Prior to installation of permanent
1
water meter(s) easements shall be reviewed and approved by Martin County Property
Management and the Martin County Legal Department, Martin County Utilities, and shall
be submitted to Martin County Board of County Commissioners for review and
acceptance.
b)
Location of Easements
Easements shall be provided in a manner so that the water or sewage main is
generally centered within the easement. Easements shall be accessible by construction
equipment and shall not be isolated by ditches, landscaping, walls or buildings.
c)
Easement Width
Easement widths shall comply with Table I below:
TABLE I
TYPE
DEPTH OF COVER
Water Mains 8-inch or less
Water Mains 10-inch or more
Sewage Force Mains
Gravity Sewage Mains
30-inches
36-inches
48-inches
2.5 feet -10 feet
10 feet - 15 feet
2.
MIN. EASEMENT WIDTH
10 feet
15 feet
15 feet
20 feet
25 feet or larger
If conditions warrant
Contractor’s Responsibility for Underground Utility Installation in Existing
Developed Areas:
The Contractor is responsible for the protection and restoration (if damaged) of all existing
structures (i.e. sidewalks, curb and gutter, pavement, mailboxes, driveways, etc.), and
any landscaping (i.e. trees, shrubs, sod, hedges, etc.), which results from his completion
of the project work. This will also include, but not be limited to, damage to
underground and above ground utilities, irrigation systems, drainage systems, and any
other existing surface or subsurface improvements.
The Contractor is responsible for restoration of existing properties to equal or better
than existing conditions before commencement of the project.
All rubble and unsuitable material must be removed from the project and disposed
of properly by the Contractor at the Contractor’s expense.
The Contractor shall provide to the Department a pre-construction audio video recording
of all Martin County Utilities Projects unless informed otherwise. The video shall be
2
taken by a professional commercial videographer who is an established enterprise who
routinely provides these services. A pre-construction audio video recording shall show
all salient features within the construction limits of the project. These features shall
include but not be limited to property addresses, driveways, roadway, plantings, trees,
poles, mailboxes, drainage structures, visible piping, utilities, ditches and condition of
lawns and general grading. The audio portion shall describe condition of the features
along with the location i.e., which side of the road, names of side streets, business
names. A complete written video log shall be supplied to insure quick access to the
various project locations shown on the tape. Optical image stabilization shall be
utilized to insure unwanted image motion. The highest shutter speed compatibility shall
be used with the maximum depth of field to provide clear still frame capability and the
highest resolution possible.
Two (2) copies of the DVD(s) shall be provided and labeled with the name of the project
and the date(s) the video was taken.
3
SECTION II - DESIGN GUIDELINES
The Design Engineer should supply the following prior to making a utility construction plan
submission to this Department:
1.
All design and construction drawings shall comply with the Ten State Standards or
the FDEP standards, whichever is more stringent, unless approved by the
Department.
2.
Prepare plans on 24" X 36" sheets, appropriate scale (no less than 1"=30', 1”=40’ is
not acceptable). Upon completion of the project, one (1) as-built DVD and three
(3) sets of as-built prints shall be submitted to the Department. The prints shall be
signed and sealed by a professional surveyor licensed by the State of Florida. The
signed and sealed prints shall be submitted within two (2) weeks of water main
bacterial testing in order to receive FDEP approval for the main. Additional
bacterial testing required because of late submittal will be at the Developers or
Engineers' expense. Sewer and reclaimed water main as-builts shall be submitted
within two (2) weeks of completing the work.
3.
Obtain and submit Fire Marshall approval of fire protection system.
4.
Submit paving and drainage plan, preliminary plat, master utility plan for multi-phase
project, key sheet, cover sheet with relevant location sketch, lift station calculations,
two (2) copies of the preliminary FDEP forms.
5.
Show appropriate clear phase lines and match lines.
6.
Re-use previously approved detail sheets to minimize comments.
7.
Provide all applicable detail drawings.
8.
Avoid placing water mains under storm drains or sewers.
9.
Call out interferences and minimum separations with conflicting pipes with indication
of "over" or "under" on plan sheet.
10.
Place sewer data including manhole influent and effluent inverts and rim elevations
on profile and plan sheets with 0.1 foot drop across manhole.
11.
Profile sheets are required for all gravity sewers and force mains (show all
crossings).
12.
Avoid placing piping out of rights-of-way.
13.
Avoid placing manholes and sewer lines out of pavement areas.
4
14.
Avoid design of excessive slopes for larger flows at right angle turns.
15.
Specifically address meter and service line requirements.
16.
Provide material information/specifications for all proposed work.
17.
Carefully check specifications to establish that County standards are not exceeded,
unless intentionally doing so. The approved plans will be enforced.
18.
All road crossing and pavement cuttings shall be in accordance with requirements of
the particular authority governing the area.
19.
Specify details for all connections to existing facilities.
20.
A pre-construction meeting between the design engineer, the contractor, the Utility
Contractor (subcontractor), a department representative, and when appropriate,
representatives of FDOT. and/or the Martin County Engineering Department must
be held prior to construction.
21.
Shop drawings are to be submitted by Engineer of Record (EOR) as one
electronic PDF file including a cover sheet on the EOR’s letterhead containing the
Engineer of Record’s (EOR) name, license number, date, and signature. The
sheet shall also include contact information of the Utility Contractor and of the
Material Supplier including email addresses. Project specific components on each
sheet shall be clouded if there are multiple options.
The PDF document shall include bookmarks for each of the following (as
applicable): water main, gravity sanitary, force main, structures, lift station,
reclaimed, and vacuum sanitary. If the PDF file exceeds 10 Mb, it shall be broken
into multiple files keeping the sections above intact in any file.
The shop drawing submittal file shall be “clean” with no redlines by Contractor or
Engineer of Record (EOR). Any deviations must be through appropriate cut
sheets from supplier. Martin County Utilities will reject packages marked
“approved as noted” or the equivalent. Martin County Utilities will require updated
cut sheets for any rejected components for the approval package.
Shop drawing file must be submitted a minimum of one (1) week prior to the
request for a preconstruction meeting in the field.
22.
Design shall take into consideration the Martin County Code provisions that govern
water and sewer and other regulatory requirements that may apply.
23.
The design engineer shall provide a hydraulic analysis of the water and wastewater
transmission systems including a fire flow analysis. Network modeling of pressure
5
pipe systems shall be provided using WaterCad/WaterGEMS by Bentley, Inc.,
Version 8.0 for Windows. If a WaterCad file is provided, the presentation file
must be included with it for use with WaterGEMS. Higher versions may be
accepted upon department approval. Submittals shall include two (2) copies each
of the input and output data for each scenario and 24"x 36" plots of each scenario
showing a scale layout of the project including annotated lots, road right-of-ways
and names, phase lines, multifamily and commercial/industrial use boundaries and
proposed equivalent residential connections, color coded and annotated pipe sizes
and pressure contours, nodes and node numbers, legend, north arrow, scale,
scenario description and date. Scenarios shall include but not be limited to average
daily flow, maximum daily flow plus fire flow and peak hour flow. A copy of the
WaterCad/WaterGEMS file(s) shall be submitted on DVD.
24.
No landscaping shall be planted in a manner that it affects the installation,
operation, or maintenance of the Utilities. Landscaping plans shall be submitted
as part of the submittals for review and approval. Trees shall not be planted within
the utility easement area as described under Section I(1)(c).
6
SECTION III - POTABLE WATER SYSTEMS
1.
Design
Water main size shall be based on hydraulic analysis of maximum day plus fire flow
requirements or peak hour demand, whichever is greater, while maintaining a residual
twenty (20) psi pressure throughout the system. Minimum size is 6-inches in looped
systems and 8-inches on dead ends.
The following fire suppression water flow is the minimum for the specified use:
Residential
Single family homes/duplexes (<5,000 sf)
1,000 gpm
Mercantile/business
3000 sq. ft or less
3000-15,000 sq. ft
Greater than 15,000 sq. ft
750 gpm
1,000 gpm
1,500 gpm
Industrial
Less than 7000 sq. ft
Greater than 7000 sq. ft
750 gpm
1,500 gpm
Warehouse/storage
Less than 7000 sq. ft
Greater than 7000 sq. ft
750 gpm
1,500 gpm
These are the minimum requirements for the specified uses with a minimum residual
pressure of twenty (20) psi. Additional water flow may be required to supplement fire
sprinkler systems or to support other hazardous uses. The developer is responsible to
meet any additional flow requirement beyond that which is within the capacity of the utility
provider. [NFPA 1 and NFPA 101]
(These are minimum requirements. The local fire ordinance shall govern.)
2.
Backflow Prevention/Cross Connection Control
There shall be no physical connection between a safe water supply and a questionable
water supply, a reclaimed water supply, or a sanitary or storm sewage system which would
allow unsafe water to enter the safe water system by direct pressure, vacuum gravity or
any other means. All potable water services within sewage facilities shall be provided with
an approved backflow prevention device. See Section XV, Manual of Cross Connection
Control and Backflow Prevention.
7
3.
Minimum Cover
Minimum cover to finished grade over water mains shall be 30-inches up to 8-inch
diameter; 10-inch or larger shall have a 36-inch cover or greater to provide a minimum 18inch cover over operating nut of gate valves.
4.
Parallel/Horizontal Separation
Sanitary sewers, force mains, reclaimed water mains and storm sewers should cross under
potable water mains whenever possible. Sanitary sewers, force mains, reclaimed water
mains and storm sewers crossing water mains shall be in accordance with drawing 1E.
All Ductile Iron Pipe (DIP) shall be Pressure Class 350 or higher. Adequate protective
measures against corrosion shall be as determined by the design engineer and the
Department.
Horizontal separation of fifteen (15) feet to buildings, top of banks of lakes and canals and
other structures shall be maintained, if possible. An absolute minimum of ten (10) feet may
be allowed only when unavoidable and only with Ductile Iron Pipe (DIP). Horizontal
separation of a minimum of three (3) feet to power poles, light poles, or other utilities
shall be maintained.
5.
Layout
Permanent dead ends, especially on hydrant lines, will not be approved unless they are
reasonably unavoidable. Dead ends shall be equipped with a blow off for flushing
purposes as required by the Florida Department of Environmental Protection (FDEP).
Temporary dead-ends shall have a gate valve. The gate valve shall be mechanically
restrained for a minimum of two (2) joints and three (3) full lengths of pipe.
Water Mains should be placed in right-of-way whenever possible. Placement of the
water main on or adjacent to interior property lines or between structures is discouraged
and will be approved only when unavoidable or when necessary for looping. Water
mains will not be allowed on rear property lines of lots.
6.
Water Main Material
All components that come into contact with potable water shall contain less than 0.25%
lead as per NSF/ANSI Standard 61, Annex G and NSF/ANSI 372.
Water Mains 2-inch in diameter shall be polyethylene as defined by A.S.T.M. D2737
SDR9 copper tube size.
Polyvinyl Chloride (PVC) Water Mains 4-inch to 12-inch in diameter shall be DR-18
manufactured to Ductile Iron Pipe (DIP) outside dimensions and in compliance with
8
AWWA Standard C900. The pipe shall have an integral bell end and gasket seal with the
joint in compliance with the requirements of ASTM D3139. The pipe shall be approved by
the National Sanitation Foundation for use as a potable water main. The pipe color shall
be blue.
Polyvinyl Chloride (PVC) Water Main 14-inch to 20-inch in diameter shall be DR-18
manufactured to Ductile Iron Pipe (DIP) outside dimensions and in compliance with
AWWA C905. The pipe shall have an internal bell end and gasket seal with the joint in
compliance with the requirements of ASTM D3139. The pipe shall be approved by the
National Sanitation Foundation for use as a potable water main. The pipe color shall be
blue.
High Density Polyethylene (HDPE) water mains 4-inch to 16-inch in diameter shall be DR11 manufactured to Ductile Iron Pipe (DIP) outside dimensions and in compliance with
AWWA C901 and C906, latest revision and ASTM F714. The pipe will be extruded from
resin meeting specifications of ASTM D-3350 with a cell classification of type III, class C,
category 5, grade P34 polyethylene compound. The pipe shall be approved by the
National Sanitation Foundation for use as a potable water main. The pipe color shall be
blue or co-extruded blue color stripes. For all size connections, fused mechanical joint
adapters shall be used. Stainless steel inserts will not be allowed.
Ductile Iron Pipe (DIP) shall be a minimum of Pressure Class 350. The Department
reserves the right to require a different thickness class for unusual or non-standard
laying conditions.
Ductile Iron Pipe (DIP) shall conform to latest standards of ANSI/AWWA C150/A21.50
for the thickness design of Ductile Iron Pipe (DIP) and ANSI/AWWA C151/A21.51 for
Ductile Iron Pipe (DIP) centrifugally cast in metal molds or sand-lined molds.
Joints for Ductile Iron Pipe (DIP) shall conform to the latest standard of ANSI/AWWA
C111/A21.11 for rubber gasket joints and ANSI/AWWA C115/A21.15 for threaded flanges.
Cement-lined Ductile Iron Pipe (DIP) shall conform to the latest standards of
ANSI/AWWA C104/A21.4
Ductile Iron Pipe (DIP) shall be required in the following circumstances:
A)
Water main 24-inches in diameter and larger.
B)
Within six (6) feet horizontally of sewage facilities or pipes.
C)
Within fifteen (15) feet of buildings, canals or lakes.
D)
Crossings under sewage or storm pipes in accordance with Item 4
of this Section.
9
7.
E)
Crossings over sewage or storm pipes in accordance with Item 4
of this Section.
F)
Carrier pipe for jack and bores (restrained joints).
G)
Aerial crossings.
H)
Ductile Iron Pipe (DIP) may be mandated by the Department in any
instance of off-site or on-site construction where future abuse to the line is
possible due to location or circumstances, extensive length under
pavement, or in private property away from County rights-of-way.
Water Main - Size
The Water Main (WM) shall be sized by the Developer's Engineer as required and as
approved by the Department. The minimum size of water main shall normally be 6-inches.
4-inch mains may be proposed for non-fire lines serving discrete areas where additional
development will not occur (i.e. cul-de-sacs).
The Engineer will be required to
demonstrate the adequacy of such sizing.
Where fire flow is provided, all fire hydrants shall be placed on 8-inch minimum sized water
mains or 6-inch minimum sized water mains where the mains are looped. Delivered flows
should meet maximum day plus fire flow requirements as mandated by the County and
FDEP. The residual pressure under fire flow conditions shall not be less than twenty
(20) psi.
8.
Valves and Fittings
Gate valves shall be Ductile Iron, resilient seat type with mechanical joints conforming to
AWWA C-515, latest revision. Valves shall be designed for a working pressure of not less
than two-hundred (200) psi. Each valve shall have the pressure rating cast into the
body and manufacturer's name or initial cast into the body or bonnet.
Valving of all systems shall be designed to facilitate the isolation of each section of pipeline
between intersections of the grid system. Generally, the number of valves at an
intersection shall be one (1) less than the number of pipes forming the intersection.
Valves shall generally be installed at intervals of not more than 1,500 LF. In high density
areas, valves shall be installed as necessary to minimize the number of persons affected
by a break.
In all instances, effectiveness of placement shall be primary criteria in determining valve
locations. Valves shall not be placed in swales or ditches.
10
All pressure pipe fittings of size 4-inch and larger shall be Ductile Iron fittings, with
mechanical joints, unless plans call specifically for flanged, restrained joint fittings.
Mechanical joints fittings shall be used for buried installations; flanged fittings shall be used
for above ground installations. Mechanical joint fittings shall conform to ANSI/AWWA C153/A21.53.
All valves, bends, tees, crosses and dead ends shall be mechanically restrained.
Clearance of 18-inches shall be maintained between all fittings (bells, valves, flanges, etc.),
unless otherwise specified. Temporary dead ends shall be terminated with a gate valve
with a mechanical joint plug and flushing hydrant.
All valve boxes shall be two (2) piece cast iron construction with screw type riser sections.
The valve box lid shall carry the word “WATER” and be the deep skirt type. Valve boxes
must have a minimum inside diameter of 5-1/4-inch. A square concrete collar that is
24”x24”x6” thick shall be poured at the top of each valve box at finished grade. Valve
box lids that are to be located in pavement must have a minimum 4” skirt are listed in
Section XVI Approved Product List.
Height adjustments to valve boxes will require a screw type, cast iron extension. Valve
boxes and extensions are listed in Section XVI Approved Product List.
When the gate valve is deeper than 36-inches an extension will be required to bring the
operating nut within 24-inches of finished grade. A ¼”x3” 316 stainless steel roll pin will be
inserted through the valve operating nut to secure the extension stem.
9.
Water Sampling Stations
With any new construction of water distribution mains, of 6-inch diameter or greater, less
than or equal to 5,280 linear feet in combined length, one permanent sample station
shall be installed. One additional water sampling station shall be installed for each
additional 5,280 linear feet of water main or portion thereof. Martin County will determine
the permanent sampling station locations during final plan review.
The water sampling station shall be installed on a minimum of 6-inches inside diameter
pipe of a water distribution main. The sampling stations shall be constructed as shown in
the Utility Detail Drawings.
The water sampling stations shall be no closer than five (5) feet from the edge of any
street or paved area and/or back of curb, and must be within a maximum fifteen (15) feet
from an operating fire hydrant.
When open, the station shall require no key for operation, and water will flow in an all
stainless steel waterway.
All working parts shall be of stainless steel and serviceable from above ground with no
11
digging or replacement needed. All stations shall be enclosed in a lockable housing unit,
non-removable aluminum housing. All opening shall be hinged. Water sampling stations
shall have 1-inch bury, with ½-inch MIP inlet, and 7/16-inch unthreaded blow off, and a
¼-inch unthreaded sampling point.
10.
Fire Hydrants/Fire Service Mains
Fire Hydrants shall conform to latest AWWA Specifications C502, and shall be of the
traffic-model type. Inlet connection shall be for a 6-inch pipe and main valve opening shall
be a minimum of 5 ½-inches. Hydrant bonnet shall have two (2) 2 ½-inch hose connections
and one (1) 4 ½-inch pumper connection. Working pressure for hydrant shall be a
minimum of one-hundred fifty (150) psi.
All working parts shall be of cast iron and high grade bronze. All hose threads shall be
ANSI B26 Standard threads. The 2 ½-inch nozzles shall have sixty (60) degree V-threads,
7 ½-inch threads per inch and a 3 1/16-inch outside diameter male thread. The 4 ½-inch
nozzle shall have four (4) threads per inch outside diameter male thread.
316 Stainless Steel bolts shall be required for all bolts above finished grade.
Nozzle caps with gaskets shall be provided for all outlets to provide tight closure for
nozzles. Caps shall be securely chained to barrel of hydrant. Cap nuts shall have same
dimensions as operating nut of hydrant.
Hydrant shall be traffic model, 3-way. All hydrants to be installed with hydrant tees, gate
valve, the required lengths of 6-inch diameter Ductile Iron Pipe (DIP) (hydrant nipple),
restrainer glands, 6-inch anchor fittings, a 6"x 36"x 36" concrete pad at bury line.
Fire hydrants shall be installed with the center of the streamer nozzle 18 to 24-inches
above finished grade.
Hydrants shall not be placed in sidewalks.
It will be the
responsibility of the Developer and Contractor to move hydrants placed in the sidewalk.
Hydrant barrel color to be OSHA Yellow and bonnet to be OSHA Yellow. Drain holes shall
be deleted or plugged with appropriate brass set screws. Fire Hydrants shall come to
jobsite factory coated, they shall be sand blasted at the factory to SSPC-10 and factory
coated in OSHA yellow. The finish coat shall meet the following ASTM standards:
Hardness: Shall Meet ASTM D3363, H – H2
Direct Impact: Shall meet ASTM D2794, 120 – 160
Chip Resistance: Shall meet ASTM D3170, 9C – 10A
Coatings shall be applied to the following mil requirements:
1)
Primer:
3.0 to 5.0 mils DFT
12
2)
Finish Coat:
2.0 to 3.0 mils DFT
Any damage to the coating shall be repaired to factory specifications.
Fire hydrants shall be provided in all water mains, transmission, and distribution systems.
Fire hydrants shall be spaced as required. A Fire Marshall approved plan is required with
all preliminary plan submissions.
Fire hydrant branches (from main to hydrant) shall be not less than 6-inches inside
diameter. Each branch shall be provided with a gate valve located as close as possible to
the main. Valve box top shall be set to grade. Hydrants shall be located near road lines
with pumper discharge nozzle facing the roadway. Hydrants shall be laid as to minimize
their vulnerability to traffic. Hydrants shall be placed in line with the lot side lines unless
otherwise approved by the Department.
Fire hydrant extensions shall not be allowed.
Hydrants shall be placed within fifteen (15) feet of the street of paved area when possible
(except as required by FDOT), and shall be no closer than five (5) feet from the edge of
the street or paved area and/or back of curb and shall not be placed in a ditch area.
The height of the hydrant above grade shall be acceptable to the Fire Marshall and
Department.
A detector check valve and other appurtenances as may be required will be specified on
fire sprinkler lines and privately owned and maintained fire hydrant lines.
The fire hydrant and fire hydrant valve shall be provided by the same manufacturer.
11.
Water Service Lines and Taps
Water service taps on the main shall be spaced at a minimum distance of 18-inches apart.
A minimum distance of 18-inches from all joints and fittings must be maintained. All
service line taps shall be installed in accordance with the construction details of this
manual. Services shall have a minimum of 30-inches cover including at ditches. All
service crossings under roadways shall be installed in a casing not less than 36-inches
between the top of the pavement and the top of the casing. Water service taps shall
not be placed under pavement including roads, driveways, parking lots and sidewalks.
Services shall not exceed one-hundred (100) feet to the meter. Meters should generally be
placed at the property line. In developments where the property line is not clearly defined
(such as at condominiums) the meter should be placed for ready access. Meters shall not
be placed in areas that can be fenced, such as backyards, under any circumstances.
Services crossing under parking lots shall have their meters placed prior to the crossing so
that the Department is not responsible for the service lines.
13
All valves shall be placed according to plan unless relocation is mutually agreed to. Record
As-built drawings shall reflect the actual location and size of all mains, fittings, hydrants,
services and valves.
12.
Connection to Existing System
A) Tapping Tees, Sleeves and Valves
Tapping sleeves shall be 304 stainless steel with flanged outlets. Tapping valves
shall be resilient seat type with a flanged joint on the inlet side and a mechanical
joint on the discharged side of the valves. Tapping valves shall have a 2-inch
operating nut. Working pressure rating shall not be less than two -hu nd red
(200) psi. Gaskets between the flange faces of the tapping sleeve and tapping
valve shall be 1/8" minimum thickness of BUNA N gasket material.
B) Size on Size Taps
Taps may be made on the same size main only when the main to be tapped is
AWWA C900, C905 or Ductile Iron Pipe (DIP).
C) Installation
A Department representative shall approve each tapping location before the tapping
sleeve is installed. Tapping sleeves shall not be installed within 18-inches of any
joint or fitting. Before installation of tapping tee, the area to be tapped and the
tapping tee shall be cleaned with potable water. After all sand, dirt and debris have
been removed from the main, the tapping tee, the tapping valve and the area where
the tapping tee is to be installed on the existing main shall be swabbed with a
chlorine or bleach solution with at least one-hundred (100) ppm of chlorine.
After the tapping tee is attached to the main, the gate valve shall be closed and
tapping tee and gate valve assembly shall be pressured tested at a minimum of
one-hundred fifty (150) psi for a minimum of fifteen (15) minutes with water. A
Department representative shall witness the pressure test. No visible leaks or
loss of pressure shall be evident. After pressure testing, the main may be
tapped. Only shell type cutters shall be used. The coupon from the hole that is
cut shall be delivered to the Department.
13.
Meters/Backflow Prevention Devices
Construction plans shall include a typical meter installation for each size meter to be
installed (see attached Standard Details). Dual metering of a single building service (i.e.,
two (2) 1-inch meters instead of one (1) 2-inch meter) shall not be permitted. The proper
sizing of meters and service lines is the responsibility of the Developer's Engineer, subject
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to the Department's approval of the sizing. Meters will be available in the following sizes
only: 5/8-inch, 1-inch, 1 ½-inch, 2-inch, 3-inch, 4-inch, and larger sizes as necessary.
Electronic radio read meters of sizes 5/8-inch through 2-inch are listed in Section XVI
Approved Product List. Meter boxes for 2-inch and smaller meters are standard and must
be installed to finished grade by utility contractor.
Meters 3-inches and larger shall be installed above ground. The backflow prevention
device shall be installed above ground close to the meter on the customer side. No taps or
connections are allowed between the meter and the backflow prevention device. All
meters must be in accordance with the Approved Product List. Electronic radio read
meters of sizes 2-inch and smaller are listed in Section XVI Approved Product List.
Meters 2-inches and smaller will be paid by the Developer, Martin County Utilities shall
provide the meter and shall be installed by the Martin County Utilities. Meters 3 to 6inches are listed in Section XVI Approved Product List and will be provided by the
developer and installed by the Developer.
All above ground piping and meters shall be coated with blue paint as follows:
Sandblast and remove all paint and any loose material in accordance with NAPF 500-03.
Do not paint or coat any nameplates, brass or stainless steel surfaces. Contractor
shall use the following paint system as specified in Section XVI Approved Product List or
equal.
Meter boxes shall be kept out of pedestrian walkways and out of driveway areas. For
shopping centers, Developer's Engineer shall give special consideration to meter layout so
as to satisfy these requirements.
Final approval of meter location will be by the
Department.
Once a service connection is made to Martin County Utilities’ water system, disconnection
from the water system is prohibited.
14.
Locator for Water Pipe
For all open cut construction, ten (10) gauge THWN insulated, stranded copper wire
shall be used. For all directional drill construction, see Section XVI Approved Product
List for the wire to be used. Wire shall be laid and secured on top of pipe. Wire shall be
continuous from valve box to valve box, wrapped two (2) times around each joint of the
pipe and extended inside each tracer box to enable location device to be attached
without digging up the valve box (see Drawing No. 18).
Service wire shall be laid in the trench with all services, connected to the main wire and
wrapped around the service piping or tubing. Wire for potable water shall be blue in color.
15
All wire connections shall be made with Dri-Splice wire connectors, fittings filled with
waterproof silicone sealant or approved equal for open cut construction. All wire
connections shall be made with the system recommended by the locate wire supplier
for directional drill construction. All splices shall be inspected by the Department before
burial. Locate wires shall be connected at the surface in a magnetized tracer box (see
Section XVI Approved Product List) and shall have a blue cover as per APWA color
code.
A location ball (see Section XVI Approved Product List) shall be installed at each fitting
and every one-hundred (100) feet of separation.
15. Cleaning and Pigging
After its installation, the complete water system (including all mains, services, hydrants,
blow-offs, air release valves and all other appurtenances) shall be thoroughly cleaned to
remove all foreign matter. The Department shall be notified at least forty-eight (48) hours
in advance of any cleaning activities. Failure to provide advance notification of cleaning
may result in the Contractor not being allowed to clean the mains. Water used for filling
and cleaning shall be from an approved potable water source.
The cleaning of piping systems shall be accomplished by the controlled and pressurized
passage through the system of a series of hydraulic or pneumatic polyurethane plugs. A
poly pigging plan shall be approved by the Department and all pigging of lines shall be
witnessed by a representative of the Department. The poly pigs shall be removed or
discharged from the system at a point as near to the end of the system as is logistically and
mechanically feasible. The contractor must demonstrate to the satisfaction of the
Department that this work will be performed by experienced and knowledgeable
supervisors and personnel who have properly, safely and effectively provided for the
cleaning of comparable systems in other similar applications.
16. Pressure Testing
All mains shall be tested for leakage. Water shall be supplied to the main and pumped to
the required one-hundred fifty (150) psi pressure. The main tested shall either be
isolated from presently potable lines or protected from leakage by a double valve
arrangement.
The Department shall be notified at least forty-eight (48) hours in advance of any testing
procedures. After flushing is completed, line pressure shall be applied to the water system
to determine if any major defects are present. The complete water system shall then be
tested at a pressure of one-hundred fifty (150) psi for a period of not less than two (2)
hours. The Department may, at its discretion, increase the period to four (4) hours.
Maximum length of line to be tested at one (1) time shall not exceed fifteen-hundred
(1500) linear feet. An oil filled pressure gauge up to two-hundred (200) psi at two (2)
pound increments shall be used for all pressure tests. No visible movement of the
16
system shall occur and leakage shall not exceed:
L = ND√P
7400
Where L = Leakage in gallons
N = Number of joints in test section
P = Test pressure in psi.
D = Diameter of pipe in inches
All leakage and pressure testing work must meet the requirements of AWWA C605 and
Rule 62.555.330 F.A.C.
17. Disinfection and Bacteriological Testing
After successful pressure testing, the complete water system shall be chlorinated to
achieve a minimum combined chlorine residual of at least seventy-five (75) parts per
million. The chlorine solution shall remain in the water system for at least twenty-four
(24) hours. The complete water system shall then be flushed to remove the strong
chlorine solution.
Test samples for bacterial analysis shall be taken by the Department or an approved
testing laboratory. If testing is required to be done through the Department a fee of $25.00
per sample will be charged for testing of each initial and all required repeat sample tests.
All disinfection work shall meet all requirements of the latest version of AWWA C651
standard and Rule 62.555.340 F.A.C.
18. Installation
A)
Installation and testing of water system pipe and fittings shall be in accordance
with AWWA Specification C-600 Latest Revision and Department's
Construction Standards and Specifications.
B)
Any pavement cut shall be replaced in accordance with requirements of the
agency of jurisdiction, or the plans, whichever is more stringent.
C)
All loading or unloading of pipe, fittings, valves and accessories shall be done
in such a manner so as to avoid damage. The pipe shall not be skidded or
rolled against pipe already unloaded. Special precautions shall be taken to
avoid damage to cement lined fittings and pipe. The interior of all pipe, fittings
and other appurtenances shall be kept free of dirt and foreign matter at all
times.
D)
All valves, bends, tees, crosses, fittings and dead ends shall be restrained
with an approved mechanical restrained joint system. Where proprietary
17
restrained joints are not used, tie rods and megalugs are the recommended
system. (See Section XVI for Approved Product List.)
E)
Tie rods used as a method of joint restraint shall be by means of steel tie back
bolts, nuts, washers and all thread rods shall be 316 stainless steel. Tie
rods and nuts shall be equal in diameter to the tee bolts and nuts which were
supplied with the applicable fittings. Two (2) tie rods per joint are required for
sizes 4-inch diameter through 10-inch diameter, four (4) tie rods per joint for
sizes 12-inch diameter through 16-inch and six (6) tie rods per joint for sizes
18-inches through 24-inches.
F)
Fire hydrants shall be designed to relieve air at high point except at aerial
crossings where automatic air release valves shall be designed. Installation of
air release valves to correct high points caused by improper installation of pipe
(not at design grade) will not be permitted. (See Section XVI for Approved
Product List.)
G)
All pipe shall be laid to line in a clean dry trench on line and grade with valves
and hydrant stems plumb. All pipe shall have a minimum cover of 30-inches
and a maximum cover of 48-inches unless otherwise noted on the plans or
required by permit.
H)
The trench at the top of the pipe shall be kept to a maximum width of 24inches plus the pipe diameter. The trench shall have a flat bottom, cut true
and even, so that the barrel of the pipe shall bear its full length. Pipe bells will
be placed in small pockets specifically excavated to receive the bell. All
excavations must be in compliance with OSHA regulations.
I)
No rocks larger than 2-inches in diameter or other items that may damage the
pipe will be permitted over the pipe. In the event pipe is installed in rock
excavation, 6-inches of granular material will be provided for bedding under the
pipe. All pipe joints, conflicts and service connections shall be left exposed
until visually inspected and approved by a Department representative.
J)
All tapping assemblies installed on existing water mains shall be pressure
tested and witnessed by a Department’s representative prior to the actual tap
of the main. The pipe coupon shall be carefully preserved and submitted to
the Department’s representative. All tapping sleeves shall be installed a
minimum of 18-inches from pipe joints or fittings.
K)
All field cuts on pipe shall require careful repair of the particular lining
damaged in strict accordance with the manufacturer’s recommendations.
L)
Fire hydrants shall be installed true and plumb. Hydrant extensions shall not
be permitted in new construction.
18
M)
19.
Do not exceed 50% of the manufacturer’s recommended maximum joint
deflection.
Horizontal Directional Drilling
The following standards pertain to the design and construction of horizontal directional
drilling of water mains in the Martin County Utilities service area.
A)
Pipe sizes and material: Horizontal directional drilled utility pipe shall be
High Density Polyethylene (HDPE) pipe (SDR9 minimum for 2-inch and
SDR 11 minimum for 4-inch or greater). If the directional drilled pipe is to be
used as a casing for a small diameter service line (up to 2-inch diameter),
DR 18 pipe is acceptable. Pipe and couplings shall be free from voids,
cracks, inclusions, and other defects and shall be uniform in color
throughout the installation.
B)
Design Requirements: The Engineer shall inquire with the Department about
approval of a horizontal directional drilling procedure for a pipe installation.
With the Department’s concurrence, the Engineer shall submit a signed and
sealed pilot bore plan for review and approval. The Engineer shall provide
Signed and Sealed pullback calculations demonstrating a factor of safety for
the pipe of two (2) against buckling and pull back stress for the proposed
pipe materials considering the materials, bore hole path, and equipment
used for each installation. Pipe selection shall meet pull back calculations
to reflect factor of safety is met. The plan shall be submitted on a 24” x
36” sheet to a maximum 1” = 20’ horizontal and 1” = 2’ vertical scale (1” =
10’ horizontal, 1” = 1’ vertical scale preferred). The plan must show:









Finished grade and surface improvements
Locations of drill set-up
Length of bore
Deflection and radii of the pilot bore
Locations of existing utilities and underground structures
Minimum horizontal and vertical clearances from underground
structures, conduits, piping systems (the proposed clearances
must exceed the Departments standards plus the guidance
system accuracy tolerance) Pipe size and specifications
Proposed pilot bore pipe deflection limits (not to exceed 50% of
the maximum deflection allowed by the pipe manufacturer nor
100% of the drill pipe stem maximum allowable radius)
Limits of directional bore installation Limits of pressure testing
Connection to existing utilities
Rights-of-way limits, utility easements and temporary
19
construction easements
C)
Preconstruction Meeting: Upon approval of the pilot drill plan by the
Department and obtaining all necessary permits for the directional drilling,
the Engineer shall schedule a preconstruction meeting with the Department.
If the construction requires any field welding/fusion of High Density
Polyethylene (HDPE) pipe and/or fittings, a Certificate of Completion of a
pipe fitting manufacturer approved training program is required. The
Engineer and the Contractors performing the utility work shall attend the
meeting.
D)
Pilot Bore: The Engineer shall schedule the beginning of work with the
Department a minimum of three (3) days in advance. The drill path shall be
accurately surveyed and plotted to create an “As-Built” drawing (same scale
as the pilot drill plan). The Engineer shall evaluate the As-Built data and
confirm the compliance with the design parameters. Deviation beyond
approved parameters (depths, deflection radius, separation to other utilities
or structures) shall be brought to the attention of the Department. The
signed and sealed pilot bore As-Built drawing shall be submitted to the
Department for review and approval.
E)
Pull back of carrier pipe: Upon approval of the pilot bore location by the
Department, the pullback operation of the required carrier pipe shall begin.
The Contractor shall select the proper reamer type with the final hole
opening to be a minimum of 1.5 times the outside diameter of the largest
component system.
The open borehole shall be stabilized by means of bentonite drilling slurry.
The slurry shall be contained at the entry or the exit side of the bore in pits or
holding tanks.
The pipe sections shall be joined together in accordance with the
manufacturer’s specifications. The ends of the pipe, gaskets, and couplings
shall be inspected for cleanliness. Chipped, scratched, scraped, cracked, or
excessively deformed pipe or couplings shall be rejected.. Two (2) locate
wires (see Section XVI for Approved Product List) shall be used on
directional drill portions of pipe construction shall be attached to pipe being
installed (500 LF or longer and at water crossings only), and extended to
nearest valve boxes, Locate wires shall be connected at the surface in a
magnetized tracer box (see Section XVI for Approved Product List) and
shall have a blue cover as per APWA color code. The pipe shall be
elevated to the approximate angle of entry and supported by roller arms or
equivalent.
Any field welding/fusion of High Density Polyethylene
(HDPE) pipe and fittings may be performed only by personnel certified
through a pipe/fitting manufacturer approved training program.
20
F)
Testing: Installed pipe shall be flushed and pressure tested using potable
water. Pressure testing shall be conducted at one-hundred fifty (150) psi
(or higher if required) for a minimum of two (2) hours. No leakage is
acceptable. Installed services, tees, and stub-outs shall be pressure tested
together with the main. Pressure testing is not required if the installed pipe is
intended to be used as a casing. If the pipe successfully passes the
pressure test, a connection to the existing pipe system may be performed.
For potable water mains, bacteriological testing and final pressure testing
are required.
On all Horizontal Directional Drill (HDD) crossings the
project will not be considered Substantially Complete and will not be
accepted by Martin County Utilities until tracer wire continuity is
demonstrated using Department approved locator to the satisfaction of the
Martin County Utilities Department Inspectors.
All Horizontal Directional Drill ( H D D ) water crossings, the Horizontal
Directional Driller will not leave the site until the pipe has passed the
pressure test and locate wire continuity is confirmed.
21
SECTION IV - SEWAGE SYSTEMS AND GRAVITY SEWERS
Gravity sewers, pumping stations and force mains shall be designed to deliver peak flows
under the following conditions:
1. Flow
Residential sewage systems shall be designed on the basis of an average flow of not less
than one-hundred (100) gallons per capita per day of sewage for ultimate tributary
population. Commercial/Industrial flow shall be based on actual records of similar
institutions or as required by the Department and as established by F.A.C. 64E-6.008.
Lateral sewers shall be designed with capacities when running full of not less than four (4)
times the average flow. Trunk sewers shall have capacities under the same conditions of
not less than 2.5 times the average flow. Special allowance shall be made in each case for
sewage from industrial plants.
Industrial wastes from service station wash racks, lubrication racks and shop floor drains
shall not be connected into the sanitary sewer system without pre-treatment specifically
approved by the Department and preferably should be disposed of separately. Caustic
wastes and all other manufacturing wastes shall not be connected into the sanitary sewage
system without pre-treatment approved by the Department.
All installations where foods are prepared, processed or served shall have a grease trap of
adequate capacity with a solids retention device installed through which the wastewater
from the preparation area shall pass before entering the sanitary sewer system.
2. Size
The minimum allowable size for any gravity sewer main shall be 8-inches in diameter. See
Standard Details for service laterals. Increasing the diameter of sewer lines to reduce
slopes will not be permitted unless justified by calculated flow.
3. Slopes
All sewers shall be designed with hydraulic slopes sufficient to give velocities, when flowing
full or half full, of not less than 2.0 feet per second, based on an acceptable formula.
The following minimum grades shall be used for design:
4 and 6-inch laterals
8-inch sewers
10-inch sewers
12-inch sewers
1.00%
0.40%
0.28%
0.22%
The maximum design velocity shall not exceed 8.0 feet per second.
22
4. Parallel/Horizontal Separation
Gravity sanitary sewers, separation shall be in accordance with drawing 1E.
5. Installation
Gravity sewer mains shall be laid accurately to both line and grade. The Department will
generally not accept any line laid with a slope of less than minimum gradients. The
Department reserves the right to independently verify questionable survey results. Visible
leakage, deflections, horizontal misalignment, significant bowing, non-consistent slopes
between manholes and sagging joints shall each be grounds for rejection of lines.
Minimum gradients shall be not less than 90% of design minimum grades. For specific
example, the minimum acceptable slope on an 8-inch line shall be .36%, if the design
called for .40%.
The absolute minimum cover on a Polyvinyl Chloride (PVC) sanitary sewer shall be 36inches to the top of the pipe. C-900 Polyvinyl Chloride (PVC) pipe shall be used for all
lengths with less than 36-inches of cover to the top of the pipe.
Absolute minimum cover for C-900 Polyvinyl Chloride (PVC) shall be kept at 30-inches
at all places not 36-inches to the top of the pipe unless the Engineer provides design
criteria verifying load carrying capacity acceptable to the Department. The Engineer
shall demonstrate the load carrying capacity of all pipes with less than 36-inches of
cover.
All pipes shall be laid in trenches having a dry and stable bottom. Backfill shall be clean
suitable fill. Pipe shall be fully supported along its entire length. Sharp or rocky material
encountered in the base shall be replaced with proper bedding. Pipe shall be laid on line
and grade as designed. Excavated material not suitable for backfill must be removed from
the site. The pipe barrel shall be uniformly supported along its entire length on undisturbed
soil or bedding material. Proper bedding shall be supplied if the existing material includes
rock, organic material or other sharp or unstable material.
6. Increasing Size, Joining Sewers, Repairs
When sewers are increased in size, or when a smaller sewer joins a larger one, this shall
occur at a manhole and the invert of the larger sewer should be lowered sufficiently to
maintain the same energy gradient (i.e., match crowns of pipe).
All construction material shall be first quality, not previously used. Repair clamp use must
be approved on a case-by-case basis by the Department before installation. Damaged or
faulty pipe and materials must be properly replaced.
23
7. Alignment
Sewers of all sizes shall be designed with uniform slope and alignment between manholes.
8. Gravity Sewer Pipe
A)
Polyvinyl Chloride (PVC) sanitary sewer gravity pipe shall meet the
requirements of ASTM Specification D 3034 for SDR 26 (pipe to be green
in color). Pipe bell shall consist of an integral wall section with a solid crosssection rubber ring, factory assembled, securely locked in place to prevent
displacement during assembly. Minimum pipe stiffness (F/Y) at 5%
deflection shall be one-hundred fifteen (115) psi for all sizes when tested
in accordance with ASTM D 2412. All fittings and service laterals shall be
SDR 26.
B)
When cover is l e s s t h a n t h i rt y - s i x ( 3 6 ) i n ch e s o r greater than
twelve (12) feet and for the last run of pipe from a manhole into a lift
station wetwell, use C-900 Polyvinyl Chloride (PVC) DR 14 (minimum
thickness). The entire run length shall be the same type of pipe.
9. Manholes
Manholes shall be set according to construction plans and shall be pre-cast in accordance
with approved shop drawings and Standard Detail drawings accompanying this text. The
manhole invert shall be carefully shaped to conform to the pipe flow channel. All manholes
shall have a minimum of 0.1 foot drop across manhole. Flow channels within the
manholes involving changes of direction of side drops shall smoothly direct the flow in
accordance with detail drawings. All concrete irregularities shall be plastered with cement
mortar in such a manner as to give a neat and watertight job. Manholes shall be pre-cast
concrete with at least the lower three (3) feet of the riser or barrel cast integrally with the
base.
Adjustment to proper grade shall be made with a combination of concrete pre-cast rings
and bricks per the Standard MCU Drawings.
A)
Location. Manholes shall be installed at the end of each sewer; at every
change in grade, size or alignment; at all sewer intersections; and at
distances not greater than Four-hundred (400) feet apart. Manholes shall be
placed in accessible locations, preferable in pavement, always flush to the
surface. Manholes shall not be placed in low lying areas where storm
water infiltration may occur. A concrete collar shall be placed around
manholes in grassed areas as shown on Standard Details. The interior and
exterior of all manholes shall be painted with two (2) coats of w a t e r
b a s e d e p o x y as noted on construction Standard Detail Drawings.
24
B)
Drop Manholes. A drop pipe shall be provided for a sewer entering a
manhole at an invert elevation of two and a half (2.5) feet or more above
the outgoing manhole channel invert. Sewer slopes shall be designed so
that a drop connection of more than two (2) feet shall not occur. There is
no limit on the length of a drop pipe. Drops shall be constructed of
Polyvinyl Chloride (PVC) pipe inside the manhole, unless otherwise
authorized by the Department. Interior will be coated with a system
specified in Section XVI Approved Product List.
C)
Flow Channel. The manhole floor shall have a flow channel with sloping
fillets made to conform in shape and carrying capacity to that of the
sewers.
D)
Service Connections. One (1) collector service connection may be directed
into an end manhole with approval of the Department.
This is
permissible only if it is treated as a sewer line (i.e., provided elevation
and flow channel). Service connections shall not be allowed into other
manholes.
The allowable length of service connections will be limited for
Departmental maintenance and inspection control over the gravity sewer
system.
The Department shall not generally maintain services. The
maximum length between clean outs shall be seventy-five (75) feet and no
more than two (2) clean outs shall be in the entire pipe run. A clean out
shall be installed at the property line to delineate ownership of the lateral.
Manholes shall be core-drilled to provide pipe opening when pre-cast hole
is not available.
Ram-nek or approved equivalent shall be used at all riser joints. After the
sections are assembled, the remaining space shall be grouted with dense
cement mortar inside and outside. All connections of Polyvinyl Chloride
(PVC) sewer pipe to manholes shall be made with a Polyvinyl Chloride
(PVC) manhole adapter or a pre-cast rubber boot (shop drawings
required).
E)
Bases, Cones, Joints: Wet wells and manholes shall have pre-cast,
monolithic pour bases. Alternative methods for constructing wet well bases
will be considered only if the size and depth of the well is excessive. All
manholes shall have pre-cast cones. Ram-nek or approved equivalent shall
be placed at joints.
25
10. Inspection and Testing
A color video recording (DVD) of all new gravity sewer lines must be made by the
contractor or the developer. Video-recording of the complete sewer system will occur
after completion of the backfilling operation and the placement and compaction of the
roadway base (just prior to laying of asphalt). The video-recording will determine that
the lines have been laid to accurate line and grade. At time of video-recording the lines
shall be cleaned with sufficient water having been introduced into each segment of line to
show any sags or dips present. The video camera shall have a depth gauge attached to
the camera skid and in front of the camera that will show depth of water in the line at
dips. Video shall be narrated. A final lamping with a Department Representative present
will be performed after the roadway is completed to verify that the system has not been
damaged. All lines and appurtenances not meeting specifications and these MINIMUM
STANDARDS shall be repaired or replaced.
The original video recording report and a set of "as-built" record drawings will be
submitted to and become the property of the Department. The recording, report and
record drawings must clearly show:
A)
Project name, date & time of video recording, segment of line being recorded
(i.e., MH #1 to MH #2) including street name, and direction of recording
process (i.e., with the flow or against the flow). Linear foot indicator on
video recording.
B)
All lateral sizes, locations and orientation.
C)
Depth of any sags/dips found in the line. No more than ½-inch of sag
will be allowed.
D)
Entire length of line between manholes.
E)
Video Pauses at problem areas with clear audible sound voice report
describing deficiency.
F)
A manhole video inspection and report shall be required for all manholes.
Any sand, rock, dirt or debris found in the lines shall be removed by the Contractor. All
leaking joints or fittings shall be replaced or sealed from the inside with grout as
determined by the Department. All cracked or defective pipe shall be replaced by the
Contractor. Any cleaning, repair or replacement of lines must be video-recorded again.
The Contractor and/or Developer will be responsible for all inspection and reinspection
costs.
Department personnel must be notified at least 48 hours in advance and be present for all
video-recording inspections.
26
11. Infiltration/Exfiltration Tests
The sewer main, house laterals and manholes shall be subjected to infiltration and
exfiltration tests (method to be agreed upon by Engineer and Department). The allowable
leakage shall not exceed fifty (50) gallons/day/inch of diameter/mile.
12.
Service Connections
Magnetic markers shall be placed at the end of each sewer lateral. See Section XVI
approved product list for markers. A location ball (see Section XVI for Approved Product
List) shall be installed at each fitting. or every one-hundred (100) feet of separation.
Locate wires shall be connected at the surface in a magnetized tracer box (see Section
XVI for Approved Product List) and shall have a green cover as per APWA color code.
Once a service connection is made to Martin County Utilities’ sewage system,
disconnection from the sewage system is prohibited.
27
SECTION V - VACUUM SEWER SYSTEMS
1.
General
All Materials, fittings and appurtenances intended for use in pressure pipe systems shall
be designed and constructed for a minimum working pressure of one-hundred fifty
(150) psi unless the specific application dictates a higher working pressure requirement.
All construction material shall be first quality, not previously used. Damaged or faulty pipe
and materials must be properly replaced.
The accompanying Standard Detail Drawings indicate specific material requirements. In
general, material requirements will be guided by the latest revisions of the specifications of
AWWA, ANSI, ASTM and NSF.
2.
Pipe Material
A) Vacuum Main
All buried vacuum mainlines, branch lines and service laterals (3-inch, 4-inch, 6inch, 8-inch, and 10-inch) shall be SDR21 pressure rated Polyvinyl Chloride (PVC)
pipe, conforming to ASTM D-2241.
All Pipe Joints shall conform to ASTM D-3139 Using elastomeric seals.
Manufacturer is required to submit a certification that the pipe seal will operate at
22-inches of mercury vacuum and withstand a vacuum test at 22-inches of mercury
vacuum with no leakage after one (1) hour with joints deflected as per ASTM
D3139.6.1.1. Elastomeric joints shall be "Rieber Style" or approved equal.
Pipe Fittings shall be Polyvinyl Chloride (PVC) Schedule forty (40) or SDR-21
pipe fittings (for solvent cement joints) and be as produced by Spears Manufacturing
Company (or approved equal) from a Polyvinyl Chloride (PVC) compound having a
cell classification of 12454 conforming to ASTM D-1784. All Polyvinyl Chloride
(PVC) fittings shall be injection molded in accordance with ASTM D-2466 with the
exception of wye fittings. The wye fittings may be fabricated provided that fitting
dimensions do not deviate significantly from those shown on the standard details.
Wye fitting sockets shall be made in accordance with ASTM D-2466. Manufacturer
shall submit a certification that the fittings will operate at and withstand a vacuum
test at 22-inches of mercury vacuum.
Primer shall conform to ASTM F-656 Solvent Cement shall conform to ASTM 2564;
cement shall not be same color as primer.
Wye fittings: 45° Ells shall be used throughout.
28
B) Gravity Sewer Pipe (Stub-out pipes and House Laterals)
All valve pit stub-out pipes and gravity laterals installed in the public right-of-way
shall be pressure rated pipe: SDR21 or Schedule forty (40) Polyvinyl Chloride
(PVC). Non- pressure rated pipe and foam core pipe is not acceptable.
SDR21 Pipe shall conform to ASTM D2241. Schedule forty (40) Pipe shall conform
to ASTM D1784.
Stub-outs shall be either 4-inches or 6-inches in diameter and shall be a minimum of
72-inches long or the length necessary to extend service to the property line. A stop
coupling shall be solvent bonded around the gravity line as shown in the
standard details.
Any gravity house lateral pipe that is connected to the valve pit stub-out shall be of
the same pipe material as the stub-out.
3.
Valves and Appurtenances
Valves shall conform to AWWA C-515, Standard for Resilient Seated Gate Valves, as
manufactured by Waterous Company or approved equal.
Wedge shall be constructed of ductile iron, fully encapsulated in synthetic rubber except
for guide and wedge nut areas.
Wedge rubber shall be molded in place and bonded to the ductile iron portion, and shall
not be mechanically attached with screws, rivets, or similar fasteners.
Wedge shall seat against seating surfaces arranged symmetrically about the centerline
of the operating stem, so that seating is equally effective regardless of direction of
pressure unbalance across the wedge.
All seating surfaces in body shall be inclined to the vertical at a minimum angle of 32°
(when stem is in a vertical position) to eliminate abrasive wear of rubber sealing surfaces.
Stem shall be sealed by at least two (2) O-Rings; all stem seals shall be replaceable with
valve wide open and while subjected to full rated pressure.
Waterway shall be smooth and shall have no depressions or cavities in seat area where
foreign material can lodge and prevent closure or sealing.
Valve body and bonnet shall be coated, inside and out, with fusion-bonded epoxy.
Coating shall conform to AWWA C550-81 and NSF-61, Standard for Protective Interior
Coating for Valves and Hydrants.
29
Mechanical joint connections with transition to Polyvinyl Chloride (PVC) gaskets shall be
provided. Two (2) tee keys shall be provided for each valve size required.
Buried valves shall be provided with valve boxes and the operating nut shall be
extended to within 9-inches, plus or minus 6-inches, of the finished grade. The valve
box cover shall have the words "SEWER" and "OPEN" with a directional arrow cast on it.
Manufacturer shall provide a full ten-year money back warranty.
4.
Wire Locator for Vacuum Main
On all pipe construction, ten (10) gauge, THWN insulated, stranded copper wire shall be
laid on top of pipe. Wire shall be continuous from Valve Box to Valve Box, wrapped two
(2) times around each joint of pipe and extended into the Polyvinyl Chloride (PVC)
threaded box located at each concrete pad around valve boxes to enable location
devices to be attached without digging up the valve box. A location ball (3M, EMS 4-inch
Ball Marker, Item Number 1404-XR) shall be installed at each fitting or every onehundred (100) feet of separation. Locate wires shall be connected at the surface in a
magnetized tracer box as produced by Copperhead Industries, LLC or approved equal,
model to be determined by MC Utilities Field Inspector as determined by placement
location and shall have a green cover as per APWA color code. All wire connections
shall be made with Dri-Splice wire connectors or shall be encased with fittings filled
with waterproof silicone sealant. All splices shall be inspected by the Department before
burial.
Wire for Vacuum Mains shall be brown in color.
5.
Valve Pits - General
Valve pit types: Valve pits shall be provided in the following types and depths as shown
in the ENGINEER's plans.
AIRVAC
Model No.
One (1) Piece Valve Pits
Depth to
Depth to
invert of
invert of
Overall gravity inlet - gravity inlet Depth
4” stub-out
6” stub-out
Sump
capacity
VP3030WT
5 ft
3.71 ft
3.71 ft
57 gal
VP4830WT
6 ½ ft
5.21 ft
5.21 ft
115 gal
VP4842WT
7 ½ ft
6.21 ft
6.21 ft
115 gal
30
AIRVAC
Model No.
Two (2) Piece Valve Pits
Depth to
Depth to
invert of
invert of
Overall
gravity inlet
gravity inlet
Depth
4” stub-out
6” stub-out
Sump
capacity
VP3042H
6 ft
4.74 ft
4.74 ft
85 gal
VP3054H
7 ft
5.74 ft
5.74 ft
85 gal
VP5442H
8 ft
6.74 ft
6.74 ft
158 gal
VP5454H
9 ft
7.74 ft
7.74 ft
158 gal
VP7842H
10 ft
8.74 ft
8.74 ft
158 gal
Separating barrier: All valve pits shall incorporate a physical barrier, part of the collection
sump, that separates the valve chamber from the collection sump.
Traffic Rated: All valve pits shall be H20 traffic rated. An independent laboratory
certification shall be provided that the entire valve pit assembly is rated for H20 traffic
wheel loads. Calculated data is not acceptable.
In-sump breather: All valve pits shall include an internal "in-sump" breather. No external
breather piping or tubing will be acceptable.
Grommet and twist lock hole seal lubricant. Type of lubricant used shall be as follows:
Type of Lubricant
Permitted
Where used
Pipe lubricant per
ANSI/NSF Standard
#61
Either water
soluble or nonwater soluble is
permitted
Grommets for gravity stubouts and vacuum service
laterals
(both 1-piece & 2-piece pits)
Liquid dishwashing
detergent diluted 1020% in water
Pipe lubricant
not permitted
Grommets for suction &
sensor pipes and in-sump
breather
(2-piece pits only)
Pipe lubricant per
ANSI/NSF Standard
#61, Sub-Aqueous
Type, non-water soluble
for underwater use
Only non-water
soluble is
permitted
31
Twist lock hole seal for
suction pipe and combined
sump breather/sensor pipe
(1-piece pits only)
Manufacturer: Valve pits and accessories as manufactured by AIRVAC.
6.
Valve Pits – 2-Piece Type
Described below is the Model VP3042H valve pit. The other 2-piece models differ
by dimensions relating to depth.
only
A)
Type: Valve pit shall have two (2) major components: 1) the valve pit cone;
and 2) the collection sump as well as associated pipes, connectors, seals
and grommets. Overall depth of the unit shall be 72-inch nominal.
B)
Valve pit cone: The valve pit cone shall be manufactured by filament
winding fiberglass process with a 36-inch inside diameter at bottom and
conically shaped to allow fitting a 26 ¾-inch frame with a 23 ½-inch inch
diameter clear opening cast iron cover. The valve pit cone shall have a
depth of 42-inch and a wall thickness of 3/16-inch.
C)
Collection sump: The collection sump and integral pit bottom shall be
manufactured by the rotational molding process using polyethylene (PE). It
shall be tapered with the upper rim designed to accept the valve pit cone as
described in paragraph B above. The collection sump shall have an overall
height of 30-inch nominal with a capacity of eighty-five (85) gallons. The
collection sump shall be designed to allow up to (4) homes to be connected
with either 4-inch or 6-inch Polyvinyl Chloride (PVC) pipe (see Part 2
Products for approved materials).
D)
Suction and Sensor Pipes: Suction and sensor pipes shall be Sch 40
Polyvinyl Chloride (PVC). Lubricant shall be as specified in Part 2.
E)
Anti-buoyancy collar: Anti-buoyancy collars shall be manufactured from
reinforced fiberglass and shall be designed to prevent floatation of the valve
pit assembly when ground water is present at grade. Anti-buoyancy collar
shall be a minimum of 53-inch square with rounded corners and a minimum
½-inch thick.
F)
Grommets: Holes for the house gravity line connections into the collection
sump shall be field located and cut. EPDM Rubber grommets as
manufactured by AIRVAC shall be used to make a watertight seal.
G)
Connectors and seals: A roll of butyl shall be provided for use between
the valve pit cone and collection sump.
H)
Manufacturer: Valve pit model VP3042H as manufactured by AIRVAC.
32
7.
Valve Pits – 1-Piece Type
Described below is the Model VP3030WT valve pit. The other one (1) piece models
differ only by dimensions relating to depth. VP4830WT and VP4842WT are also
available.
Type: Valve pit shall be manufactured by the rotational molding process using High
Density Polyethylene (HDPE); with integral upper valve chamber, lower collection sump,
separating plate between the upper and lower chamber, and an integral anti-buoyancy
collar. The wall thickness shall be ½-inch. Overall depth of the unit shall be 60-inches.
Upper chamber: The valve chamber shall be 36-inches inside diameter at the
bottom and conically shaped to allow fitting a 26 ¾-inch frame with a 23 ½-inch
diameter clear opening cast iron cover. It shall have a depth of 30-inches. The upper
chamber shall include a 3-inch vacuum service lateral pipe support with rubber o-ring
seal to insure proper pipe alignment with the suction pipe.
Separating plate: The valve pit separating plate shall be provided with twist lock holes
to mate with the suction pipe and combined sump breather/sensor pipe unit and shall be
supplied with rubber seals.
Lower chamber: The collection sump shall have a 30-inch depth and a fifty-five (55) gallon
capacity. The collection sump with the VP4830WT shall have a 44-inch depth and a onehundred fifteen (115) gallon capacity. The lower chamber includes four (4) stabilizing
embosses to support the valve pit. The lower chamber is designed to allow up to four (4)
homes to be connected with either 4-inch or 6-inch Polyvinyl Chloride (PVC) pipe.
Suction and Sensor Pipes: The suction pipe shall be High Density Polyethylene
(HDPE) and shall have a twist lock mechanism to mate with the holes in the separating
plate. The sensor pipe shall be incorporated into the sump breather, which shall also
have a twist lock mechanism to mate with the holes in the separating plate. Lubricant
shall be as specified.
An integral anti-buoyancy collar, made of High Density Polyethylene (HDPE), shall be
provided. The anti- buoyancy collar shall be factory-installed.
Grommets: Holes for the house gravity line connections into the lower chamber shall be
field located and cut. Rubber grommets shall be used to make a watertight seal.
Manufacturer: Valve pit model VP3030WT and VP4830WT as manufactured by
AIRVAC.
8.
1-Foot Extension for VP4842WT – 1-Piece Pits
Extension piece: The extension piece shall be manufactured by the rotational molding
33
process using polyethylene and allow fitting a 26¾-inch frame with a 23½-inch inch
diameter clear opening cast iron cover. It shall have a depth of 12-inch.
Mating gasket: The 1-foot extension shall include a mating gasket located between the
upper chamber of the 5-foot pit and the 1-foot extension piece.
Manufacturer: Extension piece is used to create the VP4842WT as manufactured by
AIRVAC.
9.
Flexible Connector
Flexible connector: Flexible connector shall be 3-inches in diameter with an overall length
of 7’10 1/4 (+/- ¾”). The flexible connector shall incorporate a 4' 2-inches long piece of
flexible pipe that is specially manufactured for AIRVAC. The flexible pipe shall have the
proper outside diameter for solvent welding into Polyvinyl Chloride (PVC) fittings. One
(1) end of the flexible pipe shall be joined to a 3' 8-inches long piece of 3-inch Schedule
forty (40) Polyvinyl Chloride (PVC) pipe with a 3-inch Schedule forty (40) Polyvinyl
Chloride (PVC) coupling. The opposite end of the flexible pipe shall be fitted with a 3inch Schedule forty (40) Polyvinyl Chloride (PVC) coupling.
Manufacturer: Flexible connectors as manufactured by AIRVAC.
10.
Valve Pit Covers
Valve pit covers: Valve pit covers shall be designed for H-20 loading. Castings shall
meet ASTM A-48, Class thirty (30) gray cast iron.
Identification markings: The words "AIRVAC SEWER" shall appear on top of cover in 1inch tall lettering.
Pick holes: Covers for the one-piece valve pit shall have elastomer seals and a
concealed pick hole. Covers for the three-piece valve pit shall have an open pick hole
and no elastomer seal.
Concrete collars (2-piece pits): Concrete collars are required for all AIRVAC 2-piece valve
pits located in traffic areas. See Engineer’s drawings and/or specifications for definition of
‘traffic areas’ as well as the design details of the collar.
Concrete Collars (1-piece pits): Concrete collars are required for all AIRVAC 1-piece
valve pits. Weight of collar varies according to overall pit depth and ground water
conditions. See ENGINEER’s drawings and/or specifications for weight required as well
as the design of the collar.
Manufacturer: Model R5900 by Neenah Foundry, US Foundry, or equal.
34
11.
Vacuum Valve and Valve Pit Interdependence
Interdependence: The vacuum valve and valve pit shall be designed to function together
as a complete system. Valve, valve pits and accessories shall be by the same
manufacturer.
Manufacturer: Vacuum valves, valve pits, and accessories as manufactured by AIRVAC.
12.
Vacuum Valve
Design conformance: Vacuum valves shall be designed such that head loss through the
valve is at minimum. The “Cv” factor for these valves shall be 268 or higher. An
Independent laboratory certificate shall be supplied upon request.
Type: Internal breather; Type F as manufactured by AIRVAC.
Valve Construction: Full-port 3-inch diameter valve capable of passing a 3-inch diameter
solid while matching the outside diameter of 3-inch SDR 21 Polyvinyl Chloride (PVC)
pipe. Valve to be vacuum operated on opening and spring assisted on closing; valve
configuration arranged so that the sewer vacuum ensures positive valve seating. Valve
plunger and shaft arranged to be completely out of the flow path when valve is in an open
position.
Vacuum Operator: Self-lubricating, rolling diaphragm type; diameter sufficient to open
valve fully using line vacuum to overcome sealing force; equipped with elastomer seal
where shaft enters housing; vacuum drain connected to housing to return seal leakage to
sewer when valve cycles.
Operation: Valve and sensor / controller require no outside power service.
The valve shall be manufactured such that small objects may be removed from the valve
seat area by means other than complete valve removal and disassembly.
The valve and sensor/controller shall be capable of operation when submerged in water
to a depth of two (2) feet above the upper most component.
Materials: Valves shall be chemically resistant to sewage and sewage gases. The valves
shall be constructed from materials described in the following table.
COMPONENT
Valve Body
Valve Shaft
Valve Shaft Seal
Valve O-Rings
MATERIAL
Glass Filled
Polypropylene
316 Stainless Steel
Buna N Rubber
Buna N Rubber
35
Valve Spring
Valve Plunger
Valve Seat
Valve Piston Cup
Valve Bearing
304 Stainless Steel
Polypropylene
EPDM Rubber
Polypropylene
Acetal
Furnished: Vacuum valves shall be furnished by the CONTRACTOR.
Installed: Vacuum valves shall be installed by the OWNER.
Manufacturer: Vacuum valve and accessories as manufactured by AIRVAC.
13.
Vacuum Valve Sensor /Controller
The valve as described in subsection 3 shall be equipped with a sensor-controller which
shall rely on atmospheric air and vacuum pressure from the downstream side of the valve
for its operation, thereby requiring no other power source. Rising liquid within the holding
sump shall initiate the opening of the valve when sufficient head pressure is reached in
the holding sump. The activation point shall equate to approximately ten (10) gallons of
liquid. The controller shall apply line vacuum from the downstream side of the vacuum
valve and apply it to the actuator chamber and fully open the valve.
The controller shall be capable of maintaining the valve fully open for a fixed period of
time. This shall be field adjustable over a range of three (3) to ten (10) seconds. After
this time period has elapsed, the controller shall apply atmospheric air to the actuator
chamber permitting spring assisted closure of the valve.
The controller shall be serviceable by factory-trained personnel and shall be removable
from the valve by means of a sliding key device. There shall be no tools required to
remove and replace the controller from the vacuum valve with the exception of tubing
clamp nut drivers.
The entire body shall be constructed to allow visual inspection of the internal mechanism
without disassembly. The controller shall be equipped with external test ports for bench
testing of various chambers during re-build.
Each vacuum valve controller shall be equipped with a port for connecting a portable,
self-contained valve cycle counter.
The controllers shall be chemically resistant to sewage and sewage gases. Controllers
shall be constructed from materials described in the following table.
COMPONENT
Controller Body
Controller Shaft
MATERIAL
Clear Nylon 11
Acetal
36
Controller Springs
Controller O-Rings
Controller Tubing
All Fasteners
Stainless Steel
Buna N Rubber
Polyurethane
304 Stainless Steel
Manufacturer : Vacuum valve controller as manufactured by AIRVAC.
14.
In-Sump Breather
With the exception of the individual house 4-inch gravity line air intake (or the 6-inch Air
Terminal, if used), there shall be no other external sources of air necessary or permitted
as a part of this assembly.
A factory provided internal sump breather unit arrangement shall connect the controller to
its air source and provide a means of assuring no liquid can enter the controller during
system shut downs and re-starts.
The internal sump breather shall be arranged to prevent sump pressure from forcing the
valve to open during low vacuum conditions and provide positive sump venting
regardless of traps in the home gravity service line.
Manufacturer: In-sump breather as manufactured by AIRVAC.
15.
6-inch Molded Air-Terminal
When used: When specified by the ENGINEER, this item is to be used in-lieu of
individual 4-inch air-intakes that are normally provided by the homeowner’s plumber.
Complete Air-Terminal: One 6-inch air-terminal assembly as shown on the standard
details shall be connected to each valve pit sump through one of the four (4) sump
openings provided. Connecting any gravity inlet piping to the air-terminal is not
permitted.
Height: The air-terminal’s slotted door shall be above the highest expected water level as
shown on the standard details. The molded air-terminal is intended to be installed flush
with the ground, but may be partially buried up to a maximum of 12-inches.
Piping: 6-inch Polyvinyl Chloride (PVC) pipe as described Subsection 2 “Products” shall
be used to connect the air terminal to the valve sump.
Molded Air-Terminal: Molded polyethylene construction with approximately 3/16-inch
wall thickness. Equipped with a 6-inch pipe grommet for sealing against ground water
intrusion and a 6.4-inch x 8.8-inch hinged door. Standard color Simulated Brown Stone.
Support: This product is intended to be self-supporting but may also be attached to a
37
permanent structure is so desired.
Options (only if specified by the ENGINEER): Other colors (utility green or gray granite)
may be available upon request. The air-terminal may also be equipped with an optional
cycle counter and/or other AIRVAC devices. Air terminal also available without the hinged
door (model AT1000-4)
Manufacturer: Molded air-terminal AT1000-1 as manufactured by AIRVAC.
16.
Vacuum Sewer Main Installation
All vacuum sewers shall be laid to the line and grade with the use of construction laser
beam equipment. All pipe which has been designed to slope downward shall be installed
to slope continuously downward. There shall be no abrupt sags or bellies in the line.
The maximum deviation from planned elevations shall not exceed 0.05-feet in any onehundred (100) feet of length. This plus or minus tolerance applies to all pipe sizes.
Installation by the Horizontal Directional Drilling (HDD) method is not acceptable, unless
prior, written approval is obtained from the ENGINEER. Approval would be on a case-bycase basis. Request to use Horizontal Directional Drilling (HDD) is a major deviation
requiring different pipe materials, joints, etc. Should ENGINEER approve the use of
Horizontal Directional Drilling (HDD), the same installation tolerances specified above for
open-cut would apply, no abrupt sags or bellies would be allowed and the CONTRACTOR
would be required to verify such through electronic means while the pipe is being installed.
The Engineer shall provide Signed and Sealed pullback calculations demonstrating a
factor of safety for the pipe of two against buckling and pull back stress for the proposed
pipe materials considering the materials, bore hole path, and equipment used for this
installation. Pipe selection shall meet pull back calculations to reflect factor of safety is
met.
Use proper tools and appliances for handling and laying of pipe and fittings.
Prevent entrance of dirt or foreign matter or damage to pipe lining or coating. Plug the
pipe any time that work is stopped.
Do not allow trench water to enter the pipe at any time.
No defective pieces are permitted. Defective pieces discovered after use will be
removed and replaced with a sound piece.
Fully bare pipe along its entire length.
Lay and join pipe in accordance with manufacturer's instructions to insure pipe
thermal expansion and contraction. Lay pipe with spigot end downstream.
38
Place compacted fill in entire space between the fitting and the trench walls. Use
temporary plugs in end of pipes when work is not in progress.
Provide pipe through casing with support skids to hold pipe to center of casing as shown
on Detail Drawings. Alternate support methods acceptable contingent upon ENGINEER's
review.
Bed pipe as specified in section describing trenching.
Verify pipe grade and elevation at each change in grade and record in notebook in a
manner acceptable to the ENGINEER.
17.
Division Valve and Gauge Tap installation
Division valves shall be resilient seat gate valves. Furnish and install valves under
provisions of Subsection 3 of this section. Install gauge tap adjacent to division valve as
shown on the standard detail. Provide concrete collar around each division valve and
gauge tap.
18.
Valve Pit Installation - General
The end of the stub-out pipe that passes through the valve pit grommet shall be
beveled. A stop ring shall be used to ensure the pipe does not protrude more than 4inches inside the collection sump with an allowable tolerance of 1/8”±.
All pipes that penetrate the valve pit through grommets shall be Schedule forty (40) SDR
twenty-six (26), or SDR twenty-one (21) pressure rated Polyvinyl Chloride (PVC) pipe.
No other pipe is acceptable.
The type of lubrication used with AIRVAC grommets shall be as specified.
Dedicated 6-inch air intake structures shall be installed a minimum of 18-inches
into the ground and the above ground portion shall be installed plumb and tr ue.
Water-soluble soap or silicone spray shall be used when installing Polyvinyl Chloride
(PVC) pipes through AIRVAC grommets. Use of petroleum lubricant or pipe lube is
prohibited.
19.
Valve Pit Installation (2-Piece Pit)
Valve pits shall be assembled in accordance with manufacturer’s instructions.
Valve pits shall be installed using the following procedures:
1.
Install the suction and sensor pipes.
39
2.
Determine proper location and alignment with vacuum main and wye
connection.
3.
Determine grade elevation for the top of the pit package.
4.
Determine the gravity line depth from the home to the pit package and
verify that adequate slope exists between the house and the sump inlet. If
sufficient fall does not exist, consult the ENGINEER or inspector prior to
completing the valve pit installation.
5.
Determine which raised flat area of the sump will require a gravity line stub
out. Mark and cut the holes in the raised flat area as required. Each
coupon shall be removed from the hole saw and hung inside the upper
chamber as proof of its removal.
a) For 4-inch laterals, a 5-inch opening is required with the centerline of the
opening 18-inches from the outside bottom of the sump.
b) For 6-inch laterals, a 6-7/8-inch opening is required with the centerline
of the opening 19-inch from the outside bottom of the sump.
6.
Install the appropriate size AIRVAC rubber grommets into the field cut
holes.
7.
Excavate and prepare the bedding for the valve pit package as shown on
construction plans or as field instructed.
8.
Lower the collection sump assembly into the prepared excavated hole,
taking care that no material enters the collection sump.
9.
Install the prefabricated house gravity line stub-outs through the grommet
into the collection sump tank with the stop coupling firmly against the
grommet. Use lubricant as specified in Subsection 2 when installing the
stub outs. Ensure that grommet remains in place after pipe stub is installed.
10.
Level entire assembly.
11.
Backfill to the top of the collection sump.
ENGINEER’s requirements.
12.
Conduct the sump pressure test as described in Subsection 21.
13.
Keep all mating surfaces clean and dry. Place the valve pit on top of the
sump.
40
Compact the soil per the
20.
14.
Re-check level of valve pit package. Use of hydraulic machinery to obtain
final level of valve pit may result in sump damage and is strictly prohibited.
15.
Install the fiberglass flotation collar. (If specified.)
16.
Insert the beveled end of the AIRVAC 3-inch flexible connector into the 3inch pit opening hole. Push flexible connector all the way to the 3-inch
suction elbow.
17.
Use a 3-inch Polyvinyl Chloride (PVC) coupling to attach the end of the
flexible connector to the suction elbow (do not glue) to insure proper
alignment.
18.
After bedding the flexible connector, backfill to the top of the valve pit
package. Compact the soil per the ENGINEER’s requirements.
19.
Remove the 3-inch coupling and cut the Polyvinyl Chloride (PVC) end of
the flexible connector to the center of the pit package (+/-1-inch). This is
the only time the flexible connector may be cut during installation. The
flexible connector must remain aligned concentrically with the suction pipe
+/-1/2-inch after cutting.
20.
Glue a Polyvinyl Chloride (PVC) cap onto the end of the 3-inch flexible
connector inside the pit package. NOTE: It is important to glue the
Polyvinyl Chloride (PVC) cap onto the end of the flexible connector prior to
any vacuum being applied to the 3-inch vacuum service lateral. Failure to
do this may result in the collapse of the lower collection sump.
21.
Place the frame and cover on top of the valve pit assembly.
22.
Pour a concrete ring, when required by ENGINEER.
23.
Complete the installation of vacuum service piping from end of the flexible
connector to the wye connection at vacuum main. Insure downward slope
from pit to main and any lifts required meet design requirements.
24.
Complete the back-fill of the service lateral (flexible connector to main line
wye). Tamp or vibrate fill.
25.
Record information on the Valve Pit Installation Form.
Valve Pit Installation (1-Piece Pit)
Valve pits shall be assembled in accordance with manufacturer's instructions. Valve
pits shall be installed using the following procedures:
41
1.
Excavate and prepare the bedding for the valve pit package as shown on
construction plans or as field instructed.
2.
Determine proper location and alignment with vacuum main and wye
connection.
3.
Determine grade elevation for the top of the pit package.
4.
Determine the gravity line depth from the home to the pit package. And verify
that adequate slope exists from the house to the sump inlet. If sufficient fall
does not exist, consult the ENGINEER or inspector prior to completing the
valve pit installation.
5.
Determine which raised flat area of the sump will require a gravity line stub
out. Mark and cut the holes in the raised flat area as required. Each
coupon shall be removed from the hole saw and hung inside the upper
chamber as proof of its removal.
a) For 4-inch laterals, a 5-inch opening is required with the centerline of
the opening 18-inches from the outside bottom of the sump.
b) For 6-inch laterals, a 6-7/8-inch opening is required with the centerline
of the opening 19-inches from the bottom of the sump.
6.
Install the appropriate size AIRVAC rubber grommets into the field cut holes.
7.
Lower the pit package into the prepared excavation hole.
8.
Install the prefabricated house gravity line stub-outs through the grommet
into the collection sump tank with the stop coupling firmly against the
grommet. Use lubricant as specified when installing the stub outs. Ensure
that grommet remains in place after pipe stub is installed.
9.
Level the entire assembly.
10.
Protect the top of the valve pit to prevent the entrance of soil and begin
backfilling. Compact soil as instructed by the specifications. Keep pit
package level and at desired top elevation. Stop backfilling just below the pit
package outlet port.
11.
Conduct sump test as described in Subsection 21 of this Section.
12.
Lubricate the O-ring seal inside the 3-inch vacuum service lateral
alignment port on the valve pit package with water soluble soap.
42
21.
13.
Insert the beveled end of the flexible 3-inch vacuum service lateral into the
alignment port. Push beveled end in to the center of the pit package 1-inch+.
14.
Review the rubber seal in the 3-inch vacuum service lateral alignment port to
make sure it has not been pinched.
15.
Glue a Polyvinyl Chloride (PVC) cap onto the end of the 3-inch flexible
service lateral inside the pit package. NOTE: It is important to glue the
Polyvinyl Chloride (PVC) cap onto the end of the flexible service lateral
prior to any vacuum being applied to the 3-inch vacuum service lateral
being installed. Failure to do this may collapse the lower collection sump.
16.
Install the rubber U-seal provided over the top edge of pit package.
17.
Set the cast iron ring (without cover) into position on top of the pit package.
Caution must be taken when installing the ring to keep U-seal in position. Do
not attempt to set the ring vertical on top of the pit package and pivot into
position. Place the cast iron cover on the ring to keep foreign material out
while backfilling.
18.
Complete the installation of vacuum service piping from flexible service
lateral to wye connection at vacuum main. Insure downward slope from
pit to main and any lifts required meet design requirements.
19.
Complete the back-fill. Tamp or vibrate fill.
20.
Pour a concrete ring, when required.
21.
Record information on the Valve Pit Installation Form.
AirVac Sump Testing (2-Piece Pit)
One sump test shall be performed. This test is performed after all holes have been field
cut, grommets and stub-out pipes installed and the entire valve pit assembly installed in
the ground. This test is done to test the grommets, the entire length of the stub-outs
including any pipe in the public right-of-way, and the overall sump assembly.
Sump testing shall be done as follows:
1. Attach provided sump test assembly onto the end of the 3-inch suction pipe
inside the valve pit with a 3-inch No-hub or Fernco coupling and Polyvinyl
Chloride (PVC) test cap.
43
2. Secure 1/8-inch tubing to the HIGH port on a 0-50-inch magnehelic gauge,
and then connect the other end to the tubing port on the Polyvinyl Chloride
(PVC) test cap.
3. Install a test plug in the sump breather hole using the rubber seal provided.
Apply water soluble soap to the rubber seal before installation. Turn ninety
(90) degrees to make a tight seal.
4. Pressurize the collection sump though the air chuck on the Polyvinyl
Chloride (PVC) test cap.
5. Test at 40-inch water gauge pressure. Leakage must be under 5-inch water
gauge in one (1) minute.
6. If leak test fails the CONTRACTOR must locate the leak, repair it and retest.
22.
AirVac Sump Testing (1-Piece Pit)
One (1) sump test shall be performed. This test is performed after all holes have been
field cut, grommets and stub-out pipes installed and the entire valve pit assembly
installed in the ground. This test is performed to test the grommets, stub- outs and the
overall sump assembly.
Sump testing shall be done as follows:
1. Attach provided sump test assembly onto the end of the 3-inch suction pipe
inside the valve pit with a 3-inch No-hub or Fernco coupling and Polyvinyl
Chloride (PVC) test cap.
2. Secure 1/8-inch tubing to the HIGH port on a 0-50-inch magnehelic gauge,
and then connect the other end to the tubing port on the Polyvinyl
Chloride (PVC) test cap.
3. Install a test plug in the sump breather hole using the rubber seal provided.
Apply silicone spray to the rubber seal before installation. Turn ninety (90)
degrees to make a tight seal.
4. Pressurize the collection sump through the air chuck on the
Chloride (PVC) test cap.
Polyvinyl
5. Test at 40-inch water gauge pressure for a period of one (1) minute.
44
Leakage must be under 1-inch water gauge in one (1) minute.
6. If leak test fails the CONTRACTOR must locate the leak, repair it and retest.
23.
Vacuum Line Testing – Daily Testing
A two (2) hour vacuum tightness test of all sewer mains and lateral connections shall be
conducted daily as follows:
1. Plug all open connection with rubber stoppers or temporary caps, fitted to the
pipe by "no-hub" couplings.
2. Apply a vacuum to 22-inches Hg to the pipes and allow the pressure to
stabilize for fifteen (15) minutes.
3. There shall be no loss of vacuum in excess of 1% per hour for a two (2) hour
test period.
4. There shall be absolutely no water allowed to be admitted into the piping
network during this test.
5. As pipe is laid the new section shall be tested in addition to the previously
laid pipe on that main.
6. The CONTRACTOR should leave uncovered the sewer main pipe joints
until after the daily vacuum test is complete so that any leaks can be
easily located and repaired.
If the CONTRACTOR successfully passes the daily two (2) hour test for seven (7)
consecutive working days or two-thousand (2,000) feet of pipe, a request to modify the
test procedures may be made to the ENGINEER. If so approved by the ENGINEER, the
daily two (2) hour vacuum test procedure may by modified as follows:
1. The procedure may be altered to allow the trench to be covered as work
progresses rather than being kept open all day as is the norm with the
daily two (2) hour test.
2. Should a line fail the vacuum test while utilizing this test modification, the
CONTRACTOR shall take whatever action necessary at his own expense
to successfully pass the test including the re-excavation of the trench, leak
detection, line repair, and additional cleanup as required by the
ENGINEER.
3. After a failure, the CONTRACTOR must return to the standard testing
procedures in order to "re-qualify" for the modified testing again.
45
4. This test modification is optional, and as such, the CONTRACTOR
assumes all liability in its use, even if approved by the ENGINEER.
24.
Vacuum Line Testing – Final Acceptance Test
A four (4) hour vacuum tightness test of the complete vacuum piping network,
including all sewer mains and lateral connections shall be conducted as follows:
1. Subject the entire sewerage system to a vacuum of 22-inches Hg, allow to
stabilize for fifteen (15) minutes.
2. There shall be no loss greater than 1% per hour over a four (4) hour test
period.
3. There shall be absolutely no water allowed to enter the piping system or the
vacuum station during this test.
CONTRACTOR to provide forty-eight (48) hours’ notice to ENGINEER and Martin County
Inspector prior to test. CONTRACTOR to assure all division valves are open prior to
beginning of Final Acceptance test.
Final Acceptance Test shall be recorded on approved vacuum chart recorder. This chart
will not be considered valid unless witnessed by ENGINEER on test equipment at
beginning and the end of vacuum test period.
ENGINEER will sign and date chart to verify witness of test. This signature does not
indicate acceptance of the system.
25.
Line Flushing
After successful final four (4) hour acceptance testing, flush lines to remove debris and
foreign materials that accumulated during construction.
Suggested procedure (In the absence of special test apparatus, this procedure will
require the use of vacuum valves):
1. Place system under vacuum.
2. Add water and air in controlled amounts to valve pits at extreme ends of
system.
3. Utilize system vacuum to transport water and debris to collection point.
46
4. Continue procedure until water entering at collection point is free of
contamination or debris.
5. If the vacuum collection tank is used as the collection point, monitor volume
of liquid in tank and pump out as necessary.
6. If debris is present, use other methods to empty collection tank.
7. At completion of flushing, clean collection tank of all collected debris
8. Use system sewage pumps only after verifying that all collected debris
has been properly removed and disposed of by Contractor.
9. Seal system and make ready to place into operation.
Alternate flushing procedure subject to ENGINEER's review and approval.
26.
Manufacturer’s Field Representative Role and Duties
The Manufacturer's Field Representative role shall be to supplement the OWNER and/or
ENGINEER's inspector with efforts directed toward insuring proper installation of the
vacuum system by the INSTALLATION CONTRACTOR. The presence of the
Manufacturer's Field Representative shall not, in any way, constitute the acceptance of
work nor shall it relieve the INSTALLATION CONTRACTOR of their responsibility to
comply fully with all requirements of the contract documents.
Contractor’s duties relating to vacuum main installation include but are not limited to:
1. Check type of pipe, fittings and division valves to insure they are suitable for
vacuum service.
2. Confirm that vacuum lines are installed as indicated on the construction plans
by spot-checking grades, distances and elevations.
3. Observe trench conditions to insure adequate soil conditions exist, and that
proper bedding and compaction are carried out in accordance with the
contract documents.
4. Observe branch and service lateral installations to insure compliance with
contract documents.
5. Maintain a neat, legible and accurate set of "Hydraulic Drawings" and field
notes (for manufacturer's internal use only). If the Engineer is on-site full time, he
shall provide OWNER with a copy of this information upon completion of the
project. Otherwise, Contractor is responsible to provide.
47
6. Provide onsite training on use of the Trailer Mounted Vacuum Pump (TMVP).
7. Observe the daily vacuum testing of vacuum sewers to insure compliance with
the contract documents.
8. Provide supervision of the final four (4) hour vacuum main test and line
flushing.
Contractor’s duties relating to valve pit installation shall include but are not limited to:
1. Insure sump testing is conducted in accordance with the contract documents.
2. Insure storage and handling procedures are followed to avoid loss or damage
to AIRVAC products used at the project site.
3. Insure all field penetrations to AIRVAC products are neatly cut, reasonably
circular and are located properly.
4. Insure valve pit assembly is placed in accordance with construction drawings or
as otherwise directed.
5. Insure 3-inch service lateral is properly aligned with the 3-inch suction pipe.
6. Insure that depth is in accordance with contract documents as well as within
AIRVAC limits.
7. Insure pit assembly is plumb and reasonably level.
8. Compile and maintain a complete and accurate set of valve pit installation
forms, except when the Engineer has an onsite fulltime representative who will
be responsible to provide these.
9. Observe testing and installation of gravity sewers to insure no infiltration
exists
Manufacturer's Representative shall not be responsible for keeping construction
as- built drawings. This shall be the responsibility of the INSTALLATION
CONTRACTOR or other party so designated elsewhere in the Contract
Documents.
Manufacturer's Representative shall not be responsible for compiling and
maintaining the Valve Pit Installation Forms. This shall be the responsibility of
the INSTALLATION CONTRACTOR unless the owner provides these by use
of the fulltime onsite Engineer’s approval by the County.
48
10. Valve Pit Installation Forms: Provide the OWNER with a complete set of Valve
Pit Installation Forms. One (1) form is required for each valve pit installed.
Each form must be signed by the CONTRACTOR certifying that all required
pressure tests have been successfully completed and that all sump cut-outs
(coupons) have been removed from the sump.
11.Final Inspection Form: Provide the OWNER with a signed copy of the Final
Inspection Form.
12.Vacuum Valve Installation Forms (only required when CONTRACTOR is
responsible to install the vacuum valve under this contract): Provide the
OWNER with a complete set of Vacuum Valve Installation Forms certifying the
proper installation and testing of each vacuum valve placed into service.
*The AIRVAC Specifications and Details may change over time. The latest Specifications
and Details from AIRVAC shall be used.
49
SECTION VI - SEWAGE FORCE MAINS
1. General
All materials, fittings and appurtenances intended for use in pressure pipe systems shall be
designed and constructed for a minimum working pressure of one-hundred fifty (150)
psi unless the specific application dictates a higher working pressure requirement.
All construction material shall be first quality, not previously used. Damaged or faulty pipe
and materials must be properly replaced.
Standard pressure pipe fittings of size 4-inch inner diameter (ID) and larger shall be
Ductile Iron Pipe (DIP) fittings with mechanical joints. For sizes less than 4-inch inner
diameter (ID), fittings shall be suitable to the pipe material and application and shall be
approved by the Department. Only bolts furnished by the manufacturer for mechanical
joints are acceptable.
Pipe gaskets shall be as supplied by the pipe manufacturers.
The accompanying STANDARD DETAIL DRAWINGS indicate specific material
requirements. In general, material requirements will be guided by the latest revisions of the
specifications of AWWA, ANSI, ASTM, and NSF.
2. Pipe Material
Polyvinyl Chloride (PVC) Sewer Main 4-inch to 12-inch diameter (4" - 12") shall be DR18 manufactured to Ductile Iron Pipe (DIP) outside dimensions and in compliance with
AWWA Standard C900. The pipe shall have an integral bell end and gasket seal with
the joint in compliance with the requirements of ASTM D3139. The pipe color shall be
white or green.
Polyvinyl Chloride (PVC) Sewer Main 14-inch to 20-inch diameter (14" - 20") shall be
DR-18 manufactured to Ductile Iron Pipe (DIP) outside dimensions and in compliance
with AWWA C905. The pipe shall have an internal bell end and gasket seal with the joint
in compliance with the requirements of ASTM D3139.
The pipe color shall be white or
green.
Polyvinyl Chloride (PVC) Sewer Main 20-inch diameter or greater (20" or greater) shall
be DR-14 manufactured to Ductile Iron Pipe (DIP) outside dimensions and in compliance
with AWWA C905. The pipe shall have an internal bell end gasket seal with the joint in
compliance with the requirements of ASTM D3139. The pipe color shall be white or
green.
Sewer Main 2-inch in diameter shall be polyethylene as defined by A.S.T.M.
D2737 SDR9 copper tube size.
50
High Density Polyethylene (HDPE) sewer main 4-inch to 16-inch in diameter (4” – 16”)
shall be DR-11 manufactured to Ductile Iron Pipe (DIP) outside dimensions and in
compliance with AWWA C906, latest revision and ASTM F714. The pipe will be extruded
from resin meeting specifications of ASTM D-3350 with a cell classification of type III,
class C, category five (5), grade P34 polyethylene compound. The pipe color shall be
green or co-extruded green color stripes.
Ductile Iron Pipe (DIP) shall conform to latest standards of ANSI/AWWA C150/A21.50
for the thickness design of Ductile Iron Pipe (DIP) and ANSI/AWWA C151/A21.51 for
Ductile Iron Pipe (DIP) centrifugally cast in metal molds or sand-lined molds. The
minimum thickness of the Ductile Iron Pipe (DIP) shall be Pressure Class 350 for pipes
up to 20-inches and Pressure Class 250 for pipes larger than 20-inches.
Joints for Ductile Iron Pipe (DIP) shall conform to the latest standard of ANSI/AWWA
C111/A21.11 for rubber gasket joints. All Ductile Iron Pipe (DIP) shall be “ Protecto 401
lined” and shall conform to the latest standards of ANSI/AWWA C104/A21.4
Above ground Ductile Iron Pipe (DIP) shall be Protecto 401 lined flanged Pressure Class
53 with minimum wall thickness of 0.32 for 4-inch pipe and incremental increases of
0.02-inch thickness for each pipe diameter increase up to 14-inches. Ductile Iron Pipe
(DIP) greater than 14-inches shall be submitted to the Department.
All above ground Ductile Iron Pipe (DIP) shall be coated with green paint as follows:
Sandblast and remove all paint and any loose material in accordance with NAPF-500-03.
Do not paint or coat any nameplates, brass or stainless steel surfaces. Contractor
shall use the paint system as specified in Section XVI the Approved Product List or
equal.
Flanged fittings shall meet ANSI 21.20 and AWWA C110 standards.
All fittings shall be epoxy lined.
Pipe joints to be push on. The use of Ductile Iron Pipe (DIP) shall be allowed only
where individually approved on a case by case basis.
3. Parallel/Horizontal Separation
Sanitary sewers, force mains, and storm sewers should cross under water mains whenever
possible. Sanitary sewers, force mains and storm sewers crossing water mains shall be in
accordance with drawing 1E.
All Ductile Iron Pipe (DIP) shall be pressure class 350. Adequate protective measures
against corrosion shall be as determined by the design engineer and the Department.
51
Horizontal separation of fifteen (15) feet to buildings, top of banks of lakes and canals and
other structures shall be maintained, if possible. An absolute minimum of ten (10) feet may
be allowed only when unavoidable and only with Ductile Iron Pipe (DIP). Horizontal
separation of three (3) feet minimum to power poles, light poles, or other utilities shall be
maintained.
4. Design Requirements
Design standards for force mains will generally be the same as the water mains. Force
mains shall not be less than 4-inches inside diameter and with a flow velocity of not less
than two (2) feet per second except 2-inch force mains may be allowed to maintain
minimum velocity of two (2) feet per second at the Department’s determination. Force
mains shall never enter a manhole from a direction contrary to the direction of flow out of
the manhole. All private force mains entering County right-of-way shall be built to these
MINIMUM STANDARDS past the right-of-way line. A valve shall be placed at the right-ofway line to delineate the change in maintenance responsibilities. The Department shall
control said valve.
5. Valves and Appurtenances
Gate Valves shall be ductile iron, resilient seat type with mechanical joints conforming to
AWWA C-515, latest revision. Valves shall be designed for a working pressure of not less
than two-hundred (200) psi. Each valve shall have the pressure rating cast into the
body and manufacturer's name or initial cast into body or bonnet.
Valving of all systems shall be designed to facilitate the isolation of each section of pipeline
between intersections of the grid system. Generally, the number of valves at an
intersection shall be one (1) less than the number of pipes forming the intersection.
Valves shall generally be installed at intervals of not more than fifteen-hundred (1,500)
linear feet on transmission mains and on all primary branches connected to these lines.
In high density areas, valves shall be installed at closer intervals as necessary to
minimize the number of persons affected by a break.
In all instances, effectiveness of placement shall be primary criteria in determining valve
locations. Valves shall not be placed in swales or ditches.
All valves, bends, tees, crosses and dead ends shall be restrained.
Clearance of 18-inches shall be maintained between all fittings (bells, valves, flanges, etc.).
Dead ends that may be extended in future shall have a gate valve with a mechanical joint
plug at the termination point. The valve shall be restrained a minimum of two (2) full joints
back.
52
All pressure pipe fittings of size 4-inch and larger shall be ductile iron fittings, with
mechanical joints, unless plans call specifically for flanged, restrained joint fittings.
Mechanical joint fittings shall be used for buried installations; flanged fittings shall be used
for above ground installations. Mechanical joint fittings shall conform to ANSI/AWWA C153/A21.53.
All valve boxes shall be two (2) piece cast iron construction with screw type riser sections.
The valve box lid shall carry the word “SEWER” and be the deep skirt type. Valve boxes
must have a minimum inside diameter of 5-1/4-inch. A square concrete collar
that is 24”x24”x6” thick shall be poured at the top of each valve box at finished grade.
Valve box lids that are to be located in pavement must have a minimum 4-inch skirt are
listed in Section XVI Approved Product List.
Height adjustments to valve boxes will require a screw type, cast iron extension. Valve
boxes and extensions are listed in Section XVI Approved Product List.
When the gate valve is deeper than 36-inches an extension will be required to bring the
operating nut within 24-inches of finished grade. A ¼”x3” 316 stainless steel roll pin will
be inserted through the valve-operating nut to secure the extension stem.
6. Minimum Cover
Minimum Cover to finished grade over force main shall be 48-inches.
7. Wire Locator For Force Main
For all open cut construction, ten (10) gauge THWN insulated, stranded copper wire
shall be used. For all directional drill construction, see Section XVI Approved Product
List for the wire to be used. Wire shall be laid and secured on top of pipe. Wire shall be
continuous from valve box to valve box, wrapped two (2) times around each joint of the
pipe and extended inside each tracer box to enable location device to be attached
without digging up the valve box (see Drawing No. 18).
Service wire shall be laid in the trench with all services, connected to the main wire and
wrapped around the service piping or tubing. Wire for potable water shall be green in
color.
All wire connections shall be made with Dri-Splice wire connectors, fittings filled with
waterproof silicone sealant or approved equal for open cut construction. All wire
connections shall be made with the system recommended by the locate wire supplier
for directional drill construction. All splices shall be inspected by the Department before
burial. Locate wires shall be connected at the surface in a magnetized tracer box (see
Section XVI Approved Product List) and shall have a green cover as per APWA color
code.
53
A location ball (see Section XVI Approved Product List) shall be installed at each fitting
and every one-hundred (100) feet of separation.
8. Connections for Pressure Systems
Tapping Tees and Valves. Tapping sleeves shall be 304 stainless steel with flanged
outlets. Tapping valves shall be resilient seat type with a flanged joint of the inlet side and
a mechanical joint on the discharged side of the valves. Tapping valves shall have a 2inch operating nut. Working pressure rating shall not be less than t wo - h u n d r e d
( 200) psi. Gaskets between the flange faces of the tapping sleeve and tapping valve
shall be 1/8-inch minimum thickness of neoprene rubber.
Size on size taps. Taps may be made on the same size main only when the main to be
tapped is AWWA C900, C905 or Ductile Iron Pipe (DIP).
Installation. A Department representative shall approve each tapping location before the
tapping sleeve is installed. Tapping sleeves shall not be installed within three (3) feet of
any joint or fitting. Before installation of tapping tee, the area to be tapped and the tapping
tee shall be cleaned with potable water. After all sand, dirt and debris have been removed
from the main, the tapping tee, the tapping valve and the area where the tapping tee is to
be installed on the existing main shall be swabbed with a chlorine or bleach solution with at
least one-hundred (100) ppm of chlorine.
After the tapping tee is attached to the main, the gate valve shall be closed and tapping tee
and gate valve assembly shall be pressured tested at a minimum of one-hundred fifty
(150) psi for a minimum of fifteen (15) minutes with water. A Department representative
shall witness the pressure test. No visible leaks or loss of pressure shall be evident.
After pressure testing, the main may be tapped. Only shell type cutters shall be used.
The coupon from the hole that is cut shall be delivered to the Department.
9.
Cleaning and Pigging
After its installation, the complete force main system (including all mains, air release valves
and all other appurtenances) shall be thoroughly cleaned to remove all foreign matter. The
Department shall be notified at least forty-eight (48) hours in advance of any cleaning
activities. Failure to provide advance notification of cleaning may result in the Contractor
not being allowed to clean the mains. Water used for filling and cleaning shall be from
an approved water source.
The cleaning of piping systems shall be accomplished by the controlled and pressurized
passage through the system of a series of hydraulic or pneumatic polyurethane plugs (poly
pigs). The poly pigs shall be entered into the system by the use of a pig launching
assembly. The poly pigs shall be removed or discharged from the system at a point as near
to the end of the system as is logistically and mechanically feasible. The contractor must
demonstrate to the satisfaction of the Department that this work will be performed by
experienced and knowledgeable supervisors and personnel who have properly, safely and
54
effectively provided for the cleaning of comparable systems in similar applications.
10. Pressure Testing
All mains shall be tested for leakage. Water shall be supplied to the main and pumped to
the required one-hundred fifty (150) psi pressure.
The Department shall be notified at least forty-eight (48) hours in advance of any testing
procedures. After flushing is completed, line pressure shall be applied to the
complete system to determine if any major defects are present. The complete system
shall then be tested at a pressure of one-hundred fifty (150) psi for a period of not less
than two (2) hours. The Department may, at its discretion, increase the period to four (4)
hours. The maximum length of pipe to be tested at one (1) time shall not exceed Fifteenhundred (1500) linear feet. An oil filled pressure gauge up to two-hundred (200) psi at two
(2) pound increments shall be used for all pressure tests. No visible movement of the
system shall occur and leakage shall not exceed:
L = ND√ P
7400
Where L = Leakage in gallons
N = Number of joints in test section
P = Test pressure in psi.
D = Diameter of pipe in inches
11. Installation
A)
Installation and testing of Ductile Iron Pipe (DIP) force main pipe and
fittings shall be in accordance with AWWA Specification C-600 Latest
Revision and Department's Construction Standards and Specifications.
B)
Any pavement cut shall be replaced in accordance with requirements of the
agency of jurisdiction.
C)
All loading or unloading of pipe, fittings, valves and accessories shall be done
in such a manner so as to avoid damage. The pipe shall not be skidded or
rolled against pipe already unloaded. Special precautions should be taken to
avoid damage to lined fittings and pipe. The interior of all pipes, fittings and
other appurtenances shall be kept free of dirt and foreign matter at all times.
D)
All valves, bends, tees, crosses, and dead ends shall be restrained with an
approved mechanical restrained joint system. Where proprietary restrained
joints are not used, tie rods and megalugs are the recommended system.
(See Section XVI Approved Product List.)
55
12.
E)
Tie rods used as a method of joint restraint shall be by means of steel tie back
bolts, nuts, washers and all thread rods shall be stainless steel. Tie rods
and nuts shall be equal in diameter to the tee bolts and nuts which were
supplied with the applicable fittings. Two (2) tie rods per joint are required for
sizes 4-inch diameter through 10-inch diameter, four (4) tie rods per joint for
sizes 12-inch diameter through 16-inch and six (6) tie rods per joint for sizes
18-inch through 24-inch.
F)
Air relief valves shall be at the design high points. Installation of air release
valves to correct high points caused by improper installation of pipe (not at
design grade) will not be permitted. (See Section XVI Approved Product
List.)
G)
All pipes shall be laid to line in a clean dry trench on line and grade with valves
plumb. All pipe shall have a minimum cover of 48-inches and a maximum
cover of 60-inches unless otherwise noted on the plans or required by permit.
H)
The trench at the top of the pipe shall be kept to a maximum width of 24inches plus the pipe diameter. The trench shall have a flat bottom, cut true
and even, so that the barrel of the pipe shall bear its full length. Pipe bells will
be placed in small pockets specifically excavated to receive the bell. All
excavations must be in compliance with OSHA regulations.
I)
No rocks larger than 2-inches in diameter or other items that may damage the
pipe will be permitted over the pipe. In the event pipe is installed in rock
excavation, 6-inches of granular material will be provided for bedding under the
pipe. All pipe joints, thrust blocks, conflicts and service connections shall be
left exposed until visually inspected and approved by a Department
representative.
J)
All tapping assemblies installed on existing force mains shall be pressure
tested and witnessed by a Department’s representative prior to the actual tap
of the main. The pipe coupon shall be carefully preserved and submitted to
the Department’s representative. All tapping sleeves shall be installed a
minimum of 18-inches from pipe joints or fittings.
K)
All field cuts on pipe shall require careful repair of the particular lining damaged
in strict accordance with the manufacturer’s recommendations.
L)
Do not exceed 50% of the manufacturers recommended maximum joint
deflection.
Horizontal Directional Drilling (HDD)
The following standards pertain to the design and construction of horizontal directional
drilling of force mains in the Martin County Utilities service area.
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A)
Pipe sizes and material: Horizontal directional drilled utility pipe shall be
High Density Polyethylene (HDPE) pipe (SDR 9 minimum for 2-inch and
SDR 11 minimum for 4-inch or greater). If the directional drilled pipe is to be
used as a casing for a small diameter service line (up to 2-inch diameter),
DR 18 pipe is acceptable. Pipe and couplings shall be free from voids,
cracks, inclusions, and other defects and shall be uniform in color
throughout the installation.
B)
Design Requirements: The Engineer shall inquire with the Department about
approval of a horizontal directional drilling procedure for a pipe installation.
With the Department’s concurrence, the Engineer shall submit a signed and
sealed pilot bore plan for review and approval. The Engineer shall provide
Signed and Sealed pullback calculations demonstrating a factor of safety for
the pipe of two (2) against buckling and pull back stress for the proposed
pipe materials considering the materials, bore hole path, and equipment
used for this installation. Pipe selection shall meet pull back calculations to
reflect factor of safety is met. The plan shall be submitted on a 24” x 36”
sheet to a maximum 1” = 20’ horizontal and 1” = 2’ vertical scale (1” = 10’
horizontal, 1” = 1’ vertical scale preferred). The plan must show:






Finished grade and surface improvements
Locations of drill set-up
Length of bore
Deflection and radii of the pilot bore
Locations of existing utilities and underground structures
Minimum horizontal and vertical clearances from underground
structures, conduits, piping systems (the proposed clearances
must exceed the Departments standards plus the guidance system
accuracy tolerance) Pipe size and specifications
 Proposed pilot bore pipe deflection limits (not to exceed 50% of
the maximum deflection allowed by the pipe manufacturer)
 Limits of directional bore installation Limits of pressure testing
Connection to existing utilities
 Rights-of-way limits, utility easements and temporary construction
easements
C)
Preconstruction Meeting: Upon approval of the pilot drill plan by the
Department and obtaining all necessary permits for the directional drilling, the
Engineer shall schedule a preconstruction meeting with the Department. If the
construction requires any field welding/fusion of High Density Polyethylene
(HDPE) pipe and/or fittings, a Certificate of Completion of a pipe fitting
manufacturer approved training program is required. The Engineer and the
Contractors performing the utility work shall attend the meeting.
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D)
Pilot Bore: The Engineer shall schedule the beginning of work with the
Department a minimum of three (3) days in advance. The drill path shall be
accurately surveyed and plotted to create an “As-Built” drawing (same scale as
the pilot drill plan). The Engineer shall evaluate the As-Built data and
confirm the compliance with the design parameters. Deviation beyond
approved parameters (depths, deflection radius, separation to other utilities or
structures) shall be brought to the attention of the Department. The signed
and sealed pilot bore As-Built drawing shall be submitted to the Department
for review and approval.
E)
Pull back of carrier pipe: Upon approval of the pilot bore location by the
Department, the pullback operation of the required carrier pipe shall begin.
The Contractor shall select the proper reamer type with the final hole opening
to be a minimum of 1.5 times the outside diameter of the largest component
system.
The open borehole shall be stabilized by means of bentonite drilling slurry.
The slurry shall be contained at the entry or the exit side of the bore in pits or
holding tanks.
The pipe sections shall be joined together in accordance with the
manufacturer’s specifications. The ends of the pipe, gaskets, and couplings
shall be inspected for cleanliness. Chipped, scratched, scraped, cracked, or
excessively deformed pipe or couplings shall be rejected. Two (2) locate wires
(see Section XVI Approved Product List) shall be used on directional drill
portions of pipe construction shall be attached to pipe being installed (500
linear feet or longer and at water crossings only for two (2) locate wires, one
(1) elsewhere) and extended to the nearest valve boxes. Locate wires shall
be connected at the surface in a magnetized tracer box (see Section XVI
Approved Product List) and shall have a blue cover as per APWA color code.
The pipe shall be elevated to the approximate angle of entry and supported by
roller arms or equivalent.
Any field welding/fusion of High Density
Polyethylene (HDPE) pipe and fittings may be performed only by personnel
certified through a pipe/fitting manufacturer approved training program.
F)
Testing: Installed pipe shall be flushed and pressure tested using potable
water. Pressure testing shall be conducted at one-hundred fifty (150) psi (or
higher if required) for a minimum of two (2) hours. No leakage is acceptable.
Installed services, tees, and stub-outs shall be pressure tested together with the
main. Pressure testing is not required if the installed pipe is intended to be used
as a casing. If the pipe successfully passes the pressure test, a connection to
the existing pipe system may be performed. On all Horizontal Directional Drill
(HDD) non-water crossings the project will not be considered substantially
complete and will not be accepted by Martin County Utilities until continuity of
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the tracer wire is demonstrated to the satisfaction of the Martin County Utilities
Department Inspectors.
All Horizontal Directional Drill (HDD) water crossings, the Horizontal
Directional Driller (HDD) will not leave the site until the pipe has passed the
pressure testing and locate wire continuity is confirmed.
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SECTION VII - SEWAGE PUMPING STATION DESIGN AND CONSTRUCTION
(See Standard Detail drawings for additional specific requirements).
1. Type
Sewage pumping stations shall be of below ground design with submersible pumps. All
stations shall be designed for not less than 230 volt, three (3) phase, sixty (60) cycle
electric service when available.
2. Structures
Station structures, including the wet well and the box containing the valves, shall be of precast concrete (Class II, 28 day compressive strength of 3500 psi. minimum) and meet the
requirements of ASTM C-76. Joints shall be assembled with "Ram-Neck" sealant or equal
and overlaid with grout on the inside and outside of the wet well. Grout shall be
non-shrinking waterproof cement mortar. Bottom and lower wall section shall be cast as
one (1) unit. Wet well structures shall have a minimum inside diameter of six (6) feet f o r
T yp e “ A ” a n d f o u r ( 4 ) f e e t f o r T yp e “ B ” . Wall thickness shall be a minimum of
8-inches. Rebar shall meet the requirements of ASTM A-185. The entire wetwell shall be
designed to handle H-20 truck loading at any location of the wetwell structure. Interior will
be coated with a system as specified in Section XVI Approved Product List.
Tremie installations will be approved by the Department on a case-by-case basis.
Buoyancy calculations for all wet well installations shall be submitted to the Department for
approval.
3. Access Covers
Covers for the wet well and the valve box shall be of diamond plate aluminum with a
minimum thickness of ¼-inch. The covers shall have hinges, frames, locking hasps, a
flush lifting handle, and a hold-open bracket all constructed of aluminum or stainless steel.
Wet well aluminum cover shall be hinged on side closest to electrical panel. Valve box
hinges will be placed on side furthest from electrical panel. Covers must be positioned to
allow easy removal of the pumps and to allow easy access to the valve wheels. All covers
shall be designed to handle a minimum of three-hundred (300) pounds per square foot
loading.
The access opening shall have a permanently installed fall-through protection grate
system (see Section XVI Approved Product List) that when closed provides fall through
protection and when open acts as a vertical barrier. The grate system shall be designed
to withstand a minimum load of 300 pounds per square foot. All hinges and hardware
shall be 316 stainless steel. The grate shall be powder-coated with an OSHA safety
orange to increase visual awareness of the safety hazard.
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4. Location
Pumping stations shall be located so that they will be accessible by maintenance vehicles.
All stations shall be provided with asphalt or concrete driveways suitable for truck access
and designed for H-20 truck loading.
5. Pumps
At least two (2) pumps with alternating controls shall be provided. They shall be of the
same type and capacity and shall each be capable of handling the peak hourly flow unless
a tri-plex station is approved by the Department. The peak hourly flow shall be determined
by multiplying the average daily flow by a minimum factor of 2.5 or as determined by ten
(10) State Standards. Pumps shall be capable of passing a minimum of 3-inch solids.
Complete pump curves and pump specifications shall be submitted to the Department
before approval and installation of the pumps. The pumps shall be non-overloading at any
point on the pressure, volume, characteristic curve. All submersible pump motors shall
be explosion proof rated.
If project is constructed by phase, master lift stations that will have minimal flows for a
considerable time shall be equipped with temporary pumps with reduced capacity, though
not less than 50% of a permanent pump capacity.
Only pump brands approved by the Department are acceptable. Approved pumps are
listed in Section XVI Approved Product List in these MINIMUM STANDARDS.
6. Guide Bars, Lifting Chains, Hardware
Submersible pumps shall be installed with guide rails, discharge connections, and lifting
chains or lifting cables. Guide bars or rails shall be Schedule forty (40), 316 stainless steel
pipe. The discharge connection shall be firmly attached to the bottom of the wet well with
316 stainless steel bolts. Lifting chains or cables shall be 316 stainless steel. All nuts,
bolts, washers and other hardware inside the wet well shall be 316 stainless steel.
7. Piping and Valves
Each pump shall have a gate valve and a check valve. Piping and fittings shall meet
force main standards in these MINIMUM STANDARDS with 316 stainless steel bolts,
nuts and hardware inside the wet well. Piping shall be a minimum of 4-inches in
diameter for Type “A” and 2-inches for Type “B” and all piping and valves shall be
flanged. Check valves shall be cast iron, swing check type with levers and weights. A
valved emergency pump connection with a gate valve shall be installed downstream of
the valves. A male aluminum cam-lock fitting shall be provided on the emergency pump
connection with a female cap. Piping shall be adequately restrained to prevent pipe
movement through the wall of the wet well. All piping and fittings inside the wet well shall
be coated with the Department approved wetwell coating systems. The tap on the
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piping shall be through the use of a tapping saddle only.
Private Lift Stations and Private Grinder Pump Stations shall have a gate valve and
check valve at the Right-Of-Way (ROW).
All above ground piping shall be coated with black paint as follows:
Sandblast and remove all paint and any loose material in accordance with NAPF 500-03.
Do not paint or coat any nameplates, brass or stainless steel surfaces. Contractor
shall use the painting system as specified in Section XVI Approved Product List.
8. Level Sensors
A) Float Switches
All float switches shall be rated for a minimum of ten (10) amps at 250 volts,
installed as approved by the Department, and shown in Section XVI Approved
Product List.
B) Level Transducers
Any lift stations with a design capacity exceeding 250 gpm shall be fitted with
a level transducer.
Level transducers shall be submersible pressure
transducers. Level transducers shall be loop-powered devices operating on
twelve (12) VDC and providing an analog 4-20 mA signal to the pump controller
and installed as approved by the Department.
9. Power Supply and Pump Control Panels
A) Control Panel
Pump control panel shall respond to wet well float switches to automatically
start and stop pumps. The pump control panel shall be fabricated by a
qualified controls manufacturer. Electrical power to be furnished to the panel
shall be 120/240 volt, three (3) phase, four (4) wire or 120/240 volt one (1)
phase, three (3) wire as indicated in the contract drawings. When available
higher voltages may be required for larger stations.
Single phase shall be allowed only on a case-by-case basis as approved by
the Department. Single phase installations shall utilize a VFD for each motor to
enable the use of standard 3-phase motors. VFDs shall be Yaskawa Model,
sized as required. Control panel wiring and parts shall conform to
Department standard drawing for Lift Station Control panels, Standard
Details.
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The control panel shall be designed so that electrical systems and
components in raw wastewater wells comply with National Electric Code
requirements for Class one (1) Group D Division one (1) locations. This shall
be achieved through the use of explosion proof equipment, intrinsically safe
circuitry or other approved method. Ground Fault interruption protection shall
be used to de-energize the pump motors in the event of any failure in the
electrical integrity of motor power conductors.
Each control panel shall have a Main and Emergency circuit breaker. A
mechanical interlock between the Main and Generator circuit breakers shall be
provided. The interlock shall not allow one (1) breaker to be turned on without
the other being in the off position. The interlock mechanism shall be
professionally machined from aluminum plate and securely fastened to the
interior door of the control panel. The control panel will be UL listed as a
complete unit. All nuts, bolts, washers and mounting hardware related to
mounting the panel shall be 316 stainless steel.
B) Private lift stations shall have a placard indicating contact information.
Private lift stations must have contact information as follows on the front of
their electrical panel: All information must be on a placard with red letters on a
white background with a minimum of 2-inch, maximum 3-inch letters. First line
shall state “For 24-hour service call”, second line and (third line if needed),
shall include the name of the plumber or underground contractor that will
service the lift station. The final line will include the 24- hour telephone
number with area code. Martin County staff will number the lift station.
Owner is responsible to have regular inspections of the wet well, pumps,
check valves and electrical components quarterly for single family homes and
monthly for multi-family homes by the plumber of record. Station should also
be cleaned to the bottom of the wet well once a year. All activity should be put
in a bound composition book kept in the electrical panel box for inspection if
needed.
All stations may be visited quarterly for Compliance by Martin County staff.
Yearly letters will be sent to update contractor and owner information so both
can be reached in case of emergency. Should information change during the
year please contact Martin County at (772-221-1442), so we can update our
records.
C) Generator Power Receptacle, Convenience Receptacle and Breakers
To insure operation of lift stations during disaster events, Type “A” lift stations
shall be furnished with auto-start, vacuum assisted pumps. O n e ( 1 )
Auto-start, vacuum assisted pump per lift station shall be provided to Martin
County for all lift stations that are constructed and dedicated to Martin
63
County. This auto-start, vacuum assisted pump will be dedicated to the lift
station it is being provided for. Each auto-start, vacuum assisted pump shall
conform to specifications as outlined on Drawing No. 55 through 55D of the
Standard Details section of this manual.
Each pump motor shall be protected and controlled by a thermal-magnetic
circuit breaker, melting alloy overload relay and motor starter contractor. Two
(2) 15-ampere circuit breakers for control power and convenience outlet power
shall be provided. A GFI type 15- ampere convenience outlet shall be provided
on the dead-front door of the control panel.
D) Alarms and Shut-off
High level alarm and pump shut-off and turn-on shall be accomplished by float
type liquid level switches or a liquid level transducer in conjunction with the
control components of the pump control system. The liquid level control
system shall continuously monitor wet well liquid level in and conjunction with
the pump control system shall control the operation of the pumps.
E) Seal Leak Detection
Seal leak detection shall be provided using high sensitivity relays, on pick-up,
shall cause a "Seal Leak" indicator on the interior door to light and send a
signal to the Remote Telemetry Unit (RTU). Normally closed thermal switches
in submersible pump motors shall, through the pump control panel's control
circuitry, shut down the affected pump and send a signal to the Remote
Telemetry Unit (RTU).
F) Pump Control Panel Housing
The pump control panel housing shall be a NEMA Type 12/3R with rain-shield
and three (3) point padlockable latch, dead front enclosure, constructed of not
less than fourteen (14) gauge 316 stainless steel. The minimum panel housing
shall be 12-inch deep x 30-inch wide x 36-inch high. The enclosure shall be
equipped with an exterior door, interior “dead front” door and shall incorporate a
removable 1/8-inch thick aluminum back panel on which control components
shall be mounted. The front door shall be secured to the enclosure with a
continuous stainless steel piano hinge and be equipped with a padlocking
three point latching mechanism. The handle of the three point latching
mechanism shall be fabricated of heavy gauge stainless steel. The back
panel shall be secured to the enclosure with collar studs.
G) Fastenings and duct work
All motor branch circuit breakers, motor starter contactors, overload relays,
64
control transformer and control relays shall be securely fastened to the
removable back panel with cadmium plated steel screws and lock washers. The
back panel shall be tapped to accept the component mounting screws. Selftapping screws shall not be used to mount any component.
H) Contactors and Switches
An open frame, across-the-line, NEMA rated, magnetic motor contactors with
120 volt, 60Hz coils shall be furnished for each pump motor shall be supplied
in approved single phase installations. Contacts and coil shall be easily
replaceable without removing the contactor from its mounted position. All
operating controls and instrument shall be securely mounted on the control
compartment interior dead-front door. All controls and instruments shall be
clearly labeled using engraved plastic plates to indicate function. Trouble light
switch shall be NEMA 4.
I) Primary Disconnect
The primary disconnect shall be a re-settable primary circuit breaker located in
the circuit prior to the control panel. Amperage rating and stainless steel
enclosure type to be specified by Engineer. Lightning arresters and surge
protectors shall be installed.
J) Interior
The following components shall be mounted on the interior dead-front door:
Access to Primary and Generator circuit breaker and interlock mechanism
Access to Pump and secondary breakers. Trouble light On-Off switch.
“Run in Backup” indicator light.
Two (2) each of the following:
1.
2.
3.
4.
5.
6.
Hands Off Auto (HOA) switches
Green Pump Run indicator lights
Amber “Seal Fail” indicator lights
Green “Power On” indicator light
Red “Running in Backup” indicator light
Overload reset buttons
Wire Markers shall be machine printed heat-shrink tubing or clip-on, chevron
cut, type. Wire markers shall be manufactured by manufacturer listed in
Section XVI Approved Product List.
Cable ties shall be type PRT as manufactured by manufacturer listed in Section
65
XVI Approved Product List or approved equal.
Four (4)-way adhesive back mounts shall be made of heat stabilized nylon
with an adhesive backing protected with a peel back paper covering. The
mounts to be used are listed in Section XVI Approved Product List.
Engraved plastic plates shall be of laminated plastic with black surface and
white 1/8-inch high letters secured with stainless steel screws.
Plastic wiring duct shall be Polyvinyl Chloride (PVC) with restricted slot
openings and slotted mounting holes. Wiring duct shall be complete with a
matching solid Polyvinyl Chloride (PVC) cover. Plastic wiring duct shall be type
E as manufactured by Panduit.
The wire number shall be installed as designated on the submittal schematic
at each termination end of every control wire using wire markers. If minor
changes need to be made during panel fabrication, these changes shall be
made to the schematic for the Operation and Maintenance manual. Panel
wiring shall be done in a neat and professional manner using cable ties,
adhesive back mounts, and plastic wiring ducts as required. Wiring bundles and
duct shall be run horizontal or vertical only. Diagonal runs shall not be
allowed.
Wires shall be carefully stripped of insulation when making terminations
using a wire stripper which does not cut off wiring strands during the stripping
process. Wiring terminations shall be made to lift or barrel type terminal or
compression applied spade lugs. Wires shall not be wrapped under screw
terminals when making an electrical termination. Control panel wiring shall be
with eighteen (18) AWG, 600 volt rated, tinned, stranded copper conductor UL
1007 and UL 1569 type hook-up wire.
K) Stand-by Power
Standby power receptacles and phase monitors shall be provided at all
pumping stations. Lift stations shall be equipped for auxiliary generator power
supply. The following plug and receptacle shall be used as listed in Section
XVI Approved Product List.
L) Enclosures
All lift stations shall be enclosed by vinyl coated black posts and wire mesh
fencing (chain link, six (6) feet high) with a twelve (12) foot wide gate centered
on the wet well. Decorative fencing may be used at the Developer's expense
in addition to the chain link fencing. The high water light shall be extended
above the decorative fencing. Direct vehicle access will be provided for
maintenance purposes. A 6-inch thick concrete slab shall be placed over the
66
entire area within the fenced portion of the station.
M) Access
Easements of sufficient size or right-of-way is necessary for access. An
easement or deed will be required for the lift station property. The exterior top
of the wet well shall generally not be more than one (1) foot above the road
grade adjacent to the station but in all cases shall be above the one-hundred
(100) year flood zone elevation. The layout of the station should be such to
provide easy access without interference. The fenced area shall be laid with 6inch thick concrete.
Access road from paved street to the lift station shall be ten (10) feet wide with a
minimum curve radius of seventy-five (75) feet, maximum incline of ten (10)
percent and maximum cross-section incline of fifteen (15) percent. Swale
crossings require culverts of proper design.
Access road shall be constructed in accordance with FDOT specifications. For
materials and thickness refer to typical lift station layout detail.
10. Pump Station Start-Up
Developer or Engineer shall provide the following items on pump station start-up.
a.
Deed to property or plant showing easement.
b.
Operation and Maintenance Manuals (three (3) sets required).
c.
Pump data and technical information concerning pump operation,
maintenance and repair shall be supplied at the time of completion of lift
station construction. Parts lists, warranties, and all other pertinent
information is also required. All equipment shall be warranted by the
manufacturer for one (1) year from the date of start-up.
d.
Individual schematic wiring diagrams and information concerning Control
Panel operation and parts replacement.
e.
Verification of operational approval by Manufacturer's Representative and
Engineer in writing to include actual operating conditions (total gpm at tdh,
impeller size, hp, rpm, voltage, current, discharge size).
A certified factory trained representative shall be provided by the contractor for the start-up.
No start-up can begin without the Department representative on site. Submersible pumps
shall be pulled to the surface and put on the ground, then reinstalled on the guide rails and
67
lowered in place by the manufacturer's representative prior to testing of the pumps.
11. Certified Backflow Assembly
Backflow assemblies shall be certified complete by a technician certified by TREEO of the
University of Florida, by the Florida Water and Pollution Control Operators Association, or
by an equivalent certified forty (40) hour program.
12. Lift Station Telemetry
Telemetry is required for all lift stations maintained by the Department. Construction plans
shall include the typical Remote Telemetry Unit (RTU) Motorola installation for each
lift station to be constructed.
The Developer and/or Contractor shall provide and install a Remote Telemetry Unit
( RTU) which will communicate with an existing telemetry system by cellular radio. The
Remote Telemetry Unit ( RTU) shall be provided by DCR Engineering Services, Revere
Control Systems, Star Controls, CC Controls, Curry Controls, or approved alternative
provider.
The new Remote Telemetry Unit ( RTU) equipment shall be housed in a NEMA 4, 316
stainless steel enclosure, acid dipped and painted white, equipped with lightning
protection, Remote Telemetry Unit ( RTU) with cellular modem, and battery back-up.
Enclosure shall include a padlock hasp.
Each of the main components of the Remote Telemetry Unit ( RTU) shall be as
specified below:
A)
Remote Terminal Unit (RTU). The Remote Telemetry Unit ( RTU) module shall
be a microprocessor-based controller designed for use with the existing
telemetry systems. The Remote Telemetry Unit ( RTU) shall control up to three
(3) pumps and interface with up to six (6) floats, four (4) analog signals and up to
fifteen (15) other discrete inputs. As a minimum the Remote Telemetry Unit
( RTU) module shall have the following features:
1.
Local automatic control from floats and level transducer.
2.
Local manual control provided by Hands Off Auto (HOA) switches on the
pump control panel. The Hands Off Auto (HOA) switches shall function with
the floats to provide extra operational flexibility (one (1) pump can be taken
out of service for repair by the Hands Off Auto (HOA) switch and the floats
will control the remaining pump(s)).
3.
Remote control from the central site computer shall provide individual pump
overrides, station and alarm disables, if programmed at the central site.
68
4.
Triplex/Duplex/Simplex configurable.
5.
Triplex configuration shall use emergency high, lag 2, lag 1, lead, and all off
float.
6.
Duplex configuration shall use emergency high, lag, lead, and all off float.
7.
The alternator function shall alternate around pumps that don't run when
called. The alternator shall allow the operator to override a pump on or off
with the Hands Off Auto (HOA) switches and the alternator will still provide
alternator control over the remaining pump(s).
8.
Remote alarm horn disable from central site computer.
9.
Float alarm reporting back to central site computer when floats are operating
out of sequence.
10.
Pumps/Starter/Breaker Fault alarms shall be reported back to central site
computer. The alarms shall be activated when a pump is called to run, but
fails to run, or if the pump is turned off by the Remote Telemetry Unit
( RTU) module, but continues to run.
11.
Hands Off Auto (HOA) switch alarms shall be reported back to central site
computer. Alarms shall indicate that a Hands Off Auto (HOA) switch has
been left in the HAND or OFF position.
12.
Pump run status shall be reported back to central site computer. Pump run
times shall be recorded with two (2) second accuracy.
13.
Remote Telemetry Unit (RTU) Power Status shall be reported back to
central site computer.
B) Cellular Modem
4G LTE Verizon Modem
Manufacturer
Model
Sierra Wireless
GX450 or current equivalent
Part # 1102360 / with extended warranty Part #
9010027
C) Antenna.
Low profile antenna
Manufacturer
Model
Laird Antenna
TRA6927M3NWN-001 or current equivalent
69
D)
Mount
¾ NMO mount, 0-2500 MHz Stainless Steel or Brass
Connection
The Contractor shall supply all necessary components for a fully functional Remote
Telemetry Unit ( RTU). Any appurtenance not specifically detailed above, but required
for proper operation shall be provided.
The Contractor shall be responsible for all installation and start-up and testing of the
Remote Telemetry Unit (RTU), including mounting of the panel, wiring, supports, etc.
Martin County Utilities to provide Remote Telemetry Unit (RTU) programming and HMI
modifications.
13. Grease Traps/Lint Traps
A)
Grease Traps. Restaurants and other food service businesses, service stations and
vehicle repair garages.
1. Grease, oil, and sand interceptors shall be provided on drains leading to sewer
pipes when, in the opinion of the Director, they are necessary for the proper
handling of wastewater containing excessive amounts of grease and oil, or
sand; except that such interceptors shall not be required for residential users.
All interception units shall be of type and capacity, and constructed based upon
the standards set forth in FAC Chapter 64E-6.013 (minimum 750
gallons/maximum 1250 gallons), as well as, the latest version of the
Martin County Utilities Minimum Design and Construction Standards.
B)
Lint Traps. Lint screens are required on drains leading to sewer pipes from
commercial laundries. Filtering apparatus should be sized to handle flow rate of
laundry discharge through a minimum of three (3) screens two-¼-inch mesh size
and one-1/8-mesh size. Metal fabric must be used for filtering. No toxic metal
fabrics will be allowed.
C)
Existing restaurants that change ownership and/or type of food prepared onsite will
be required to submit a letter stating the number of seats in the restaurant and/or
meals served per day for use in sizing the Grease Interceptor, based on FAC 64E6.013 requirements.
D)
All newly constructed restaurants will be required to submit a Grease Trap
Questionnaire indicating the size of the Grease Interceptor required to support the
number of seats and/or meals served per day, signed and sealed by a Professional
Engineer, and a diagram indicating the proposed location of the Grease Interceptor.
See Standard Detail Drawing No. 72 which indicates generation rates for ordinary
restaurants at 16 gpd per seat.
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SECTION VIII – RESIDENTIAL SEWAGE GRINDER PUMPING STATION
DESIGN AND CONSTRUCTION
(See Standard Detail drawings for additional specific requirements).
1. Type
This section covers simplex grinder sewage pumping stations for residential uses
installed by the owner and maintained by Martin County. For duplex, triplex, and
quadraplex residential buildings, each unit will be required to have their own station
with electrical power supplied by the corresponding unit. Stations shall be of below
ground design with submersible pumps and w a l l - m o u n t e d c o n t r o l p a n e l .
2. Pumps and Plumbing
Pumps provided shall be a submersible, two (2) horsepower, progressive cavity grinder
pump. The pump shall be capable of providing a minimum of five (5) GPM at onehundred (100) psi and fourteen (14) GPM at twenty-four (24) psi head. The pump shall be
provided by the manufacturer with thirty (30) foot long leads for connection to the
controller. The pump plumbing shall include a check valve and knife gate quick
disconnect assembly prior to discharging through the basin wall with a 1-1/4-inch
bulkhead fitting.
Force main shall be 1-1/4-inch High Density Polyethylene (HDPE) DR-9 with a minimum
of 24-inches and a maximum of 48-inches of cover. A 1-1/4-inch x 2-inch adapter, 2-inch
brass flapper style check valve, and a 2-inch brass curb stop valve shall be installed in a
stackable meter box at the right of way. Pipe between basin and valve box at the right of
way shall be either continuous or fused without compression fittings. Any bends or
deflections shall be installed with a smooth bend with a minimum radius of 25-inches for
1-1/4-inch pipe. A continuous #12 stranded tracer wire with green insulation shall be
installed with force main from valve box to basin.
Gravity pipe between the building and basin shall be installed per the requirements within
the locally adopted plumbing code.
3. Basin Structure and Location
The station basin structure shall be high density polyethylene with a watertight cover with
provisions for a 4-inch gravity inlet hub. The basin shall have integral anti-flotation
measures so concrete ballast is not required with a minimum internal volume of onehundred twenty (120) gallons. Basin excavation shall be dewatered as needed with basin
installed plumb on 6- inches of compacted #57 stone.
The basin and control panel locations must be approved by Martin County Utilities prior to
installation. The preferred basin location is in the front yard within five (5) feet of the
adjacent dwelling wall, or on the side of the home no greater than five (5) feet behind the
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front plane of the building wall. The basin shall be installed with the top at least 3-inches
but no more than 6-inches below finished floor elevation, and the surrounding grade 3 to
6-inches below the top of the basin.
The basin must be located entirely within a green space and outside of any driveways,
sidewalks, patios, pavers, or other hardscaped areas. The basin must be no closer than
ten (10) feet to any existing or proposed trees and no landscaping other than grass,
groundcover, or mulch is permitted within five (5) feet of the basin. The routing of the
force main must be centered within a five (5) foot wide path clear of any trees, shrubs,
fences, walls, or other structures.
4. Electrical Service and Control Panel
The property owner shall provide single phase, two-hundred forty (240) volt, 4-wire
electrical service, including neutral and ground, terminated within 18-inches of the station
controller with a NEMA 3R disconnect. The service shall be protected at the building panel
with a 2-pole 30A breaker, permitted and installed in accordance with the requirements of
Martin County Building Department.
Minimum conduit size for electrical service between the controller and the basin shall be
1-1/4-inch with appropriate sweeps for any change in direction. Due to the length of the
pump leads, the controller must be installed no further than five (5) feet from the basin and
shall be wall mounted.
The control panel shall be equipped with integral breakers for pump and control circuits
and a 4-wire, two-hundred forty (240) volt, flanged inlet generator receptacle L15-30P,
compatible with a L15-30R cord. The control panel shall have a red flashing alarm light
and buzzer with provisions for future network interface. The lockable, NEMA 4x enclosure
shall include provisions to allow for wall mounting. A label shall be affixed to the outside of
the enclosure with Martin County Utilities emergency contact information.
The station shall be provided with a 3-point solid state electronic level transducer. The
transducer shall provide a signal indicating pumps off, pumps on, and alarm with a 6-inch
interval between each setting.
5. Maintenance Obligations
The property owner and their tenants are responsible for ensuring that the waste stream
discharging to the station does not negatively affect the system. These include plastics,
flushable wipes, diapers, hair, grease or oils, sand, paint, chemicals, or other items not
associated with normal sanitary wastes.
The property owner shall be responsible for the costs associated with the repair of the
basin, controller, force main or valve box due to damage by vehicles, landscape
maintenance, trenching, roots, etc. In the event of repeated abuse of the system, Martin
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County has the right to terminate their maintenance obligations. The property owner shall
also be required to maintain the gravity plumbing between the building and the basin, and
the electrical service between the station control panel and the building electrical panel.
Except for damage and obligations described above, the County shall be obligated to
maintain, repair, and replace the basin and related pumps, force main, and controller as
needed.
6. Abandoning of Existing Septic Systems
If the grinder system is utilized to connect a building previously served by a septic
system, the septic tank and drain field must be abandoned and properly permitted by
Martin County Health Department in accordance with their standards and FAC 64E6.011.
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SECTION IX - RECLAIMED WATER SYSTEMS
1.
General
The design, construction and operation of reclaimed water facilities shall abide by the
criteria outlined in Chapter 62-610 of the Florida Administrative Code. Supplemental
specifications for individual components of the reclaimed water system will be provided to
the Engineer of Record at the plan review meeting.
The engineering report described in Rule 62.610.310 shall be submitted with each project.
The abbreviated version described may be applicable.
Users of reclaimed water shall execute with the Department a binding agreement ensuring
that construction, operation, maintenance, and monitoring meet the requirements of 62600, 62-610, and 62-620, F.A.C. Such binding agreements are required for all Reclaimed
sites not owned by the permittee.
The developer shall provide the Department plans, in addition to those of the meter station, a
scale drawing of the site irrigation plan including pump facilities, storage reservoirs,
mains, valves, controllers, individual lot irrigation systems, and irrigation schedules.
To aid in the prevention of cross connections, purple color-coded pipe and spray irrigation
heads as specified, are mandatory throughout the irrigation system.
Reclaimed water services shall be located adjacent to sanitary service locations.
Reclaimed water users that utilize re-pump irrigation systems for areas such as residential
lawns, park facilities, playing fields, common areas, medians, etc., shall utilize the “Amiad”
EBS scanner type filter, with one-hundred (100) micron filtration and automatic backwash.
These filters may not be necessary for bulk users that irrigate areas such as golf courses,
nurseries, etc., with larger diameter sprinkler heads.
Locations for the installation of Public Notification Signage shall be sited on the drawings
with details of the standard.
Use of reclaimed water through hoses, faucets, hose bibs, or couplers is prohibited.
Reclaimed water is prohibited inside buildings.
Temporary connections utilizing reclaimed water for use as make-up water for construction
is prohibited unless explicit written permission from the Reclaimed Coordinator has been
granted.
Installation of reclaimed water pipe and associated fittings shall be in accordance with
current AWWA specifications and manufacturers requirements for their particular products.
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Mechanical restraint shall be required at each fitting involving a change of direction and as
specified in plan details.
All pipe shall be laid in trenches having a dry and stable bottom. Backfill shall be clean
suitable fill. Pipe shall be fully supported along its entire length. Sharp or rocky material
encountered in the base shall be replaced with proper bedding. Pipe shall be laid on line
and grade as designed.
A surface aerator shall be required in all unlined ponds. An air diffuser shall be required
for all lined ponds. Aerator and diffuser types shall be as specified by Martin County
Utilities Design & Construction Standards & Specifications.
A surface aerator shall be required when a bulk reclaimed water delivery pond has a
depth of seven (7) feet or less from the top of bank. (These aerators work best in
shallow ponds, and allow the oxygen to transfer into water more effectively.)
½ Acre pond
¾ HP standard
See Approved Product List
1 Acre pond
1 HP standard
See Approved Product List
2 Acres pond
2 HP standard
See Approved Product List
2 + Acres pond
Design by Developers.
Engineer submit calculations to MCU& SW for approval
A diffused aerator shall be required when a bulk reclaimed water delivery pond has a
depth of more than seven (7) feet from the top of bank. (These aerators work best in
deeper ponds, and allow the oxygen to transfer into water more effectively.)
½ Acre pond
1 Acre pond
2 Acres pond
4 – 12” fine bubble
diffusers
6 - 12” fine bubble
diffusers
8 - 12” fine bubble
diffusers
See Approved Product List
See Approved Product
List
See Approved Product List
2 + Acres pond
Design by Developers.
Engineer submit calculations to MCU & SW for approval.
Note: All aerators must have a twenty (24) hour control timer enclosed in a weather proof box. This box is to be installed
inside a separate fenced and gated area along with the FPL power meter. This shall not be located in the Bulk Reclaimed
Water Meter Station.
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2.
Backflow Prevention/Cross Connection Control
There shall be no physical connection between a safe water supply and a questionable
water supply, a reclaimed water supply, or a sanitary or storm sewage system which would
allow unsafe water to enter the safe water system by direct pressure, vacuum, gravity or
any other means. All potable water services within sewage facilities shall be provided with
an approved backflow prevention device. See Section XV, Manual of Cross Connection
Control and Backflow Prevention.
3.
Minimum Cover
Minimum cover to finished grade over reclaimed water mains shall be 30-inches up to 8inches diameter; 10-inch or larger shall have 48-inch cover.
4.
Parallel/Horizontal Separation
Sanitary sewers, force mains, reclaimed water mains and storm sewers should cross under
potable water mains whenever possible. Sanitary sewers, force mains, reclaimed water
mains and storm sewers crossing water mains shall be in accordance with drawing 1E.
All Ductile Iron Pipe (DIP) shall be Pressure Class 350 or higher. Adequate protective
measures against corrosion shall be as determined by the design engineer and the
Department.
Horizontal separation of fifteen (15) feet to buildings, top of banks of lakes and canals and
other structures shall be maintained, if possible. An absolute minimum of ten (10) feet may
be allowed only when unavoidable and only with Ductile Iron Pipe (DIP).
5.
Layout
Permanent dead ends will not be approved unless they are reasonably unavoidable. Dead
ends shall be equipped with a blow-off for flushing purposes. Temporary dead-ends shall
have a gate valve with a mechanical joint plug. The gate valve shall be mechanically
restrained for two (2) full joints of pipe.
Reclaimed water mains should be placed in right-of-way whenever possible. Placement of
the water main on or adjacent to interior property lines or between structures is
discouraged and will be approved only when unavoidable or when necessary for looping.
6.
Reclaimed Water Main Material
Polyvinyl Chloride (PVC) reclaimed water mains 4-inch to 12-inch diameter (4" - 12")
shall be DR-18 manufactured to Ductile Iron Pipe (DIP) outside dimensions and in
compliance with AWWA Standard C900. The pipe shall have an integral bell end and
gasket seal with the joint in compliance with the requirements of ASTM D3139. The
pipe color along with all associated appurtenances shall be Purple Pantone 522.
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Smaller diameter service lines (1/2-inch through 3-inch) shall be Polyethylene
Pressure Pipe and Tubing or Polyvinyl Chloride (PVC) (schedule 40) and shall be
manufactured in compliance with ANSI/AWWA C901, PE 3408, PC 200 and DR9. The
pipe color shall be Purple Pantone 522 or co-extruded Purple Pantone 522 color stripes.
Polyvinyl Chloride (PVC) reclaimed water mains 14-inch to 20-inch diameter (14" - 20")
shall be DR-18 manufactured to Ductile Iron Pipe (DIP) outside dimensions and in
compliance with AWWA C905. The pipe shall have an internal bell end and gasket seal
with the joint in compliance with the requirements of ASTM D3139. The pipe color shall
be Purple Pantone 522.
High Density Polyethylene (HDPE) reclaimed water main 4-inch to 16-inch in diameter
(4” – 16”) shall be DR-11 manufactured to Ductile Iron Pipe (DIP) outside dimensions and
in compliance with AWWA C906, latest revision and ASTM F714.
The pipe will be
extruded from resin meeting specifications of ASTM D-3350 with a cell classification of
type III, class C, category five (5), grade P34 polyethylene compound. The pipe color
shall be Purple Pantone 522 or co- extruded Purple Pantone 522 color stripes.
Ductile Iron Pipe (DIP) shall be a minimum of Pressure Class 350. The Department
reserves the right to require a different thickness class for unusual or non-standard
laying conditions. The pipe shall be color coded with four (4) 2-inch wide stripes along the
length of the pipe at all four (4) quadrants painted Purple Pantone 522.
Ductile Iron Pipe (DIP) shall conform to latest standards of ANSI/AWWA C150/A21.50
for the thickness design of Ductile Iron Pipe (DIP) and ANSI/AWWA C151/A21.51 for
Ductile Iron Pipe (DIP) centrifugally cast in metal molds or sand-lined molds.
Ductile Iron Pipe (DIP) shall be cement lined per ANSI/AWWA C104/A21.4, flanged
Pressure Class 53 with minimum wall thickness of 0.32 for 4-inch pipe and incremental
increases of 0.02-inch thickness for each pipe diameter increase up to 14-inches. Ductile
Iron Pipe (DIP) greater than 14-inches shall be submitted to the Department.
All above ground Ductile Iron Pipe (DIP) shall be coated with Pantone Purple 522 paint
as follows: Sandblast and remove all paint and any loose material in accordance with
NAPF 500-03. Do not paint or coat any nameplates, brass or stainless steel surfaces.
Contractor shall use the paint system specified in Section XVI Approved Product List.
Flanged fittings shall meet ANSI 21.20 and AWWA C110 standards.
Joints for Ductile Iron Pipe (DIP) shall conform to the latest standard of
ANSI/AWWA C111/A21.11 for rubber gasket joints and ANSI/AWWA C115/A21.15 for
threaded flanges.
Cement-lined Ductile Iron Pipe (DIP) shall conform to the latest standards of
ANSI/AWWA C104/A21.4
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Ductile Iron Pipe (DIP) shall be required in the following circumstances:
7.
A)
Main 24-inches in diameter and larger.
B)
Within fifteen (15) feet of buildings, canals or lakes.
C)
Crossings under potable water, sewage or storm pipes that cannot comply
with subsection (1) or (2) of Drawing 1E
D)
Crossings over potable water, sewage or storm pipes that cannot comply
with subsection (1) or (2) of Drawing 1E
E)
Carrier pipe for jack and bores (restrained joints).
F)
Aerial crossings.
G)
Deep piping.
H)
Ductile Iron Pipe (DIP) may be mandated by the Department in any
instance of off-site or on-site construction where future abuse to the line is
possible due to location or circumstances, extensive length under
pavement, or in private property away from County rights-of-way.
Reclaimed Water Main - Size
The reclaimed water mains shall be sized by the Developer's Engineer as required and as
approved by the Department. The minimum size of reclaimed mains shall normally be 4inches. The Engineer shall be required to demonstrate the adequacy of such sizing.
8.
Valves and Fittings
Gate valves shall be ductile iron, resilient seat type with mechanical joints conforming to
AWWA C-500, latest revision. Valves shall be designed for a working pressure of not less
than two-hundred (200) psi. Each valve shall have the pressure rating cast into the
body and manufacturer's name or initial cast into the body or bonnet. Valve box is to be
Pantone Purple 522 in color.
Valving of all systems shall be designed to facilitate the isolation of each section of pipeline
between intersections of the grid system. Generally, the number of valves at an
intersection shall be one (1) less than the number of pipes forming the intersection.
Valves shall generally be installed at intervals of not more than 1,500 LF. In high density
areas, valves shall be installed as necessary to minimize the number of persons affected
by a break.
In all instances, effectiveness of placement shall be primary criteria in determining valve
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locations. Valves shall not be placed in swales or ditches.
All pressure pipe fittings of size 4-inch and larger shall be ductile iron fittings, with
mechanical joints, unless plans call specifically for flanged, restrained joint fittings.
Mechanical joints fittings shall be used for buried installations; flanged fittings shall be used
for above ground installations. Mechanical joint fittings shall conform to ANSI/AWWA C153/A21.53.
All valves, bends, tees, crosses and dead ends shall be mechanically restrained.
Clearance of 18-inches shall be maintained between all fittings (bells, valves, flanges, etc.),
unless otherwise specified. Temporary dead ends shall be terminated with a gate valve
and mechanical joint plug. The valve shall be restrained a minimum of two (2) pipe joints.
Valve Boxes (for valves 4-inch or larger)
1. ASTM A48 class 30, grey cast iron
2. All valve boxes on 4-inch valves or larger, shall be 3-piece cast iron construction
with screw type riser sections.
The valve box lid shall carry the word
“RECLAIMED” and be the deep skirt type. Valve boxes must have a minimum
inside diameter of 5-1/4-inch. A square concrete collar that is 24”x24”x6” thick
shall be poured at the top of each valve box at finished grade. Valve box lids
that are to be located in pavement must have a minimum 4-inch skirt are listed
in Section XVI Approved Product List.
3. Height adjustments to valve boxes will require a screw type, cast iron extension.
Valve boxes and extensions are listed in Section XVI Approved Product List.
4. When the gate valve is deeper than 36-inches an extension will be required to
bring the operating nut within 24-inches of finished grade. A ¼”x3” 316 stainless
steel roll pin will be inserted through the valve-operating nut to secure the
extension stem.
9. Reclaimed Water Service Lines and Taps
Reclaimed water service taps on the main shall be spaced at a minimum distance of 18inches apart. A minimum distance of 18-inches from all joints must be maintained. All
service line taps shall be installed in accordance with the construction details of this
manual. Services shall have a minimum of 30-inches cover including at ditches. All
service crossings under roadways shall be installed in a casing not less than 36-inches
between the top of the pavement and the top of the casing. Service taps shall not be
placed under pavement including roads, driveways, parking lots and sidewalks.
Services shall not exceed one-hundred (100) feet to the meter. Meters should generally be
placed at the property line. In developments where the property line is not clearly defined
(such as at condominiums) the meter should be placed for ready access. Meters shall not
79
be placed in areas that can be fenced, such as backyards, under any circumstances.
Services crossing under parking lots shall have their meters placed prior to the crossing so
that the Department is not responsible for the service lines.
All valves shall be placed according to plan unless relocation is mutually agreed to. Record
or as built drawings shall reflect the actual location and size of all mains, services and
valves. All taps must be at least 18-inches from a fitting or bell.
10.
Connection To Existing System
a) Tapping Tees, Sleeves and Valves
Tapping sleeves shall be 304 stainless steel with flanged outlets. Tapping valves shall
be resilient seat type with a flanged joint on the inlet side and a mechanical joint on
the discharged side of the valves. Tapping valves shall have a 2-inch operating nut.
Working pressure rating shall not be less than two-hundred (200) psi. Gaskets
between the flange faces of the tapping sleeve and tapping valve shall be 1/8-inch
minimum thickness of neoprene rubber.
b) Size on size taps
Taps may be made on the same size main only when the main to be tapped is
AWWA C900, C905 or Ductile Iron Pipe (DIP).
c) Installation
A department representative shall approve each tapping location before the tapping
sleeve is installed. Tapping sleeves shall not be installed within three (3) feet of any
joint or fitting. Before installation of tapping tee, the area to be tapped and the
tapping tee shall be cleaned with potable water. After all sand, dirt and debris have
been removed from the main, the tapping tee, the tapping valve and the area
where the tapping tee is to be installed on the existing reclaimed main shall be
swabbed with a chlorine or bleach solution with at least one-hundred (100) ppm of
chlorine.
After the tapping tee is attached to the main, the gate valve shall be closed and tapping
tee and gate valve assembly shall be pressured tested through the test port at onehundred eighty (180) psi for a minimum of fifteen (15) minutes with water. A
Department representative shall witness the pressure test. No visible leaks or loss of
pressure shall be evident. After pressure testing, the main may be tapped. Only shell
type cutters shall be used. The coupon from the hole that is cut shall be delivered to
the Department.
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11. Meters
Construction plans shall include a typical meter installation for each size meter to be
installed (see Standard Details). Dual metering of a single building service (i.e., two (2) 1inch meters instead of one 2-inch meter) shall not be permitted. The proper sizing of
meters and service lines is the responsibility of the Developer's Engineer, subject to the
Department's approval of the sizing. Reclaimed meters will be available in the following
sizes only: 5/8-inch, 1-inch, 1 ½-inch, 2-inch, and larger sizes as necessary. Meter boxes
for 2-inch and smaller meters are standard with Purple Pantone 522 colored covers and/or
“RECLAIMED stamped on top of the box.
Meters 3-inches and larger shall be installed above ground. No taps or connections are
allowed on above ground meter assemblies. All meters must be purchased from the
Department prior to installation. Meters 2-inches and smaller will be installed by the
Department.
All above ground meter assemblies shall be coated with Pantone Purple 522 paint as
follows:
Sandblast and remove all paint and any loose material in accordance with NAPF 500-03.
Do not paint or coat any nameplates, brass or stainless steel surfaces. Contractor
shall use the paint system as specified in Section XVI Approved Product List.
Meter boxes shall be kept out of pedestrian walkways and out of driveway areas. For
shopping centers, Developer's Engineer should give special consideration to meter layout
so as to satisfy these requirements.
Metering for bulk users (ie, golf courses) which require telemetry, shall conform to the
requirements of Subsection 17 of this section.
12. Locator for Reclaimed Water Pipe
For all open cut construction, ten (10) gauge THWN insulated, stranded copper wire
shall be used. For all directional drill construction, see Section XVI Approved Product
List for the wire to be used. Wire shall be laid and secured on top of pipe. Wire shall be
continuous from valve box to valve box, wrapped two (2) times around each joint of the
pipe and extended inside each tracer box to enable location device to be attached
without digging up the valve box (see Drawing No. 18).
Service wire shall be laid in the trench with all services, connected to the main wire and
wrapped around the service piping or tubing. Wire for potable water shall be purple in
color.
All wire connections shall be made with Dri-Splice wire connectors, fittings filled with
waterproof silicone sealant or approved equal for open cut construction. All wire
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connections shall be made with the system recommended by the locate wire supplier
for directional drill construction. All splices shall be inspected by the Department before
burial. Locate wires shall be connected at the surface in a magnetized tracer box (see
Section XVI Approved Product List) and shall have a purple cover as per APWA color
code.
A location ball (see Section XVI Approved Product List) shall be installed at each fitting
and every one-hundred (100) feet of separation.
13. Cleaning and Pigging
After its installation, the complete water system (including all mains, services, blow-offs, air
release valves and all other appurtenances) shall be thoroughly cleaned to remove all
foreign matter. The Department shall be notified at least forty-eight (48) hours in advance
of any cleaning activities. Failure to provide advance notification of cleaning may result in
the Contractor not being allowed to clean the mains. Water used for filling and cleaning
shall be from an approved water source.
Permanent pigging facilities are to be incorporated into all designs. Minimum distances
need to be set.
The cleaning of piping systems shall be accomplished by the controlled and pressurized
passage through the system of a series of hydraulic or pneumatic polyurethane plugs (poly
pigs). The poly pigs shall be entered into the system by the use of a pig launching
assembly. The poly pigs shall be removed or discharged from the system at a point as near
to the end of the system as is logistically and mechanically feasible. The contractor must
demonstrate to the satisfaction of the Department that, this work will be performed by
experienced and knowledgeable supervisors and personnel who have properly, safely and
effectively provided for the cleaning of comparable systems in similar applications.
14. Horizontal Directional Drilling
Reclaimed water mains constructed by the Horizontal Directional Drilling (HDD) method
shall comply with “SECTION III - POTABLE WATER SYSTEMS, Subsection 19.
15. Pressure Testing
All mains shall be tested for leakage. Water shall be supplied to the main and pumped to
the required one-hundred fifty (150) psi pressure.
The Department shall be notified at least forty-eight (48) hours in advance of any testing
procedures. After flushing is completed, line pressure shall be applied to the reclaimed
water system to determine if any major defects are present. The complete reclaimed water
system shall then be tested at a pressure of one-hundred fifty (150) psi. for a period of
not less than two (2) hours. The Department may, at its discretion, increase the period
to four (4) hours. Maximum length of line to be tested at one (1) time shall not exceed
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fifteen-hundred (1500) linear feet. An oil filled pressure gauge up to t w o - h u n d r e d ( 200)
psi at two (2) pound increments shall be used for all pressure tests. No visible
movement of the system shall occur and leakage shall not exceed:
L = ND√P
7400
Where
L = Leakage in gallons
N = Number of joints in test section
P = Test pressure in psi.
D = Diameter of pipe in inches
On all Horizontal Directional Drill (HDD) non-water crossings the project will not be
considered Substantially Complete and will not be accepted by Martin County Utilities
until tracer wire continuity is demonstrated to the satisfaction of the Martin County Utilities
Department Inspectors.
All Horizontal Directional Drill (HDD) water crossings, the Horizontal Directional Driller
will not leave the site, and the project will not be considered Substantially Complete, and
will not be accepted by Martin County Utilities until tracer wire continuity is demonstrated
to the satisfaction of the Martin County Utilities Department Inspectors.
16. Installation
A)
Installation and testing of reclaimed water main pipe and fittings shall be in
accordance with AWWA Specification C-600 Latest Revision and department's
Construction Standards and Specifications.
B)
Any pavement cut shall be replaced in accordance with requirements of the
agency of jurisdiction.
C)
All loading or unloading of pipe, fittings, valves and accessories shall be done
in such a manner so as to avoid damage. The pipe shall not be skidded or
rolled against pipe already unloaded. Special precautions should be taken to
avoid damage to cement lined fittings and pipe. The interior of all pipe, fittings
and other appurtenances shall be kept free of dirt and foreign matter at all
times.
D)
All valves, bends, tees, crosses, and dead ends shall be restrained with an
approved mechanical restrained joint system. Where proprietary restrained
joints are not used, tie rods and megalugs are the recommended system.
(See Section XVI Approved Product List.)
E)
Tie rods used as a method of joint restraint shall be by means of steel tie back
bolts, nuts, washers and all thread rods shall be 316 stainless steel. Tie
rods and nuts shall be equal in diameter to the tee bolts and nuts which were
83
supplied with the applicable fittings. Two (2) tie rods per joint are required for
sizes 4-inch diameter through 10-inch diameter, four (4) tie rods per joint for
sizes 12-inch diameter through 16-inch diameter and six (6) tie rods per joint
for sizes 18-inch diameter through 24-inch diameter.
F)
Air relief valves shall be at the design high points. Installation of air release
valves to correct high points caused by improper installation of pipe (not at
design grade) will not be permitted. (See Section XVI Approved Product
List.)
G)
All pipe shall be laid to line in a clean dry trench on line and grade with valves
plumb. All pipe shall have a minimum cover of 30-inches and a maximum
cover of 48-inches unless otherwise noted on the plans or required by permit.
H)
The trench at the top of the pipe shall be kept to a maximum width of 24inches plus the pipe diameter. The trench shall have a flat bottom, cut true
and even, so that the barrel of the pipe shall bear its full length. Pipe bells will
be placed in small pockets specifically excavated to receive the bell. All
excavations must be in compliance with OSHA regulations.
I)
No rocks larger than 2-inches in diameter or other items that may damage the
pipe will be permitted over the pipe. In the event pipe is installed in rock
excavation, 6-inches of granular material will be provided for bedding under the
pipe. All pipe joints, thrust blocks, conflicts and service connections shall be
left exposed until visually inspected and approved by a Department
representative.
J)
All tapping assemblies installed on existing reclaimed mains shall be pressure
tested and witnessed by a Department’s representative prior to the actual tap
of the main. The pipe coupon shall be carefully preserved and submitted to
the Authority’s representative. All tapping sleeves shall be installed a minimum
of 18-inches from pipe joints or fittings.
K)
All field cuts on pipe shall require careful repair of the particular lining damaged
in strict accordance with the manufacturer’s recommendations.
L)
Do not exceed 50% of the manufacturer’s recommended joint deflection.
17. Metering Facility for Bulk Users
Bulk users of reclaimed water which have a contractual obligation with the Department for
the use of reclaimed water, shall construct a metering facility in conformance with this
section and all applicable details. The metering facility shall consist of an above grade
meter, control valve, control panel, telemetry system, remote reservoir level indicating
device, and electrical service with distribution load center and service isolation. The
requirements for each stations instrumentation and controls may vary with its location in
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the Reclaimed system. Therefore, system integration of all control devices and
instrumentation shall be provided by the SCADA system designer DCR Engineering
Services, Inc., Revere Systems Controls, Inc., Star Controls, CC Controls, Curry
Controls or approved alternative provider.
The Engineer of Record shall provide flow calculations for sizing of the flowmeter and
motor actuated valve.
All reclaimed water storage ponds should include a device to provide aeration to the pond
allowing the pond to have self-purification capabilities. In addition, all Reclaimed storage
ponds shall include a staff gauge that is readable by Martin County Utilities (MCU) staff
from the shoreline and indicates the pond level in NGVD 1929 datum.
A) Metering Facility
The Department shall be provided with a perpetual utility easement including ingress
and egress to allow operation and maintenance at the metering sites. The metering
facility shall be laid out in accordance with the Department’s specifications and details.
Fence shall be constructed of similar materials and components to that required for lift
stations and shall enclose all metering facilities with a poured concrete base extending to
its perimeter. The general/electrical contractor shall provide the facility with electrical
service to a support rack with meter, a distribution load center and service isolation. The
support rack shall be sized to accommodate the Remote Telemetry Unit (RTU) control
panel. It will also be the responsibility of the general/electrical contractor to insure that
all underground/pad conduit work is completed during the construction process and prior
to placement of the metering station’s housekeeping slab on grade.
B) Meter
The meter shall be a one-hundred fifty (150) psi flanged Water Specialties ML-04-D
with remote mount kit sized appropriately between 4-inches and 10-inches to
accommodate the effective operating flow rates. Manufactured by McCrometer
Corporation. The transmitter shall be powered by a twenty-four (24) VDC supply from
the control panel. Meters less than 6- inches in diameter will required special review by
the Department.
C) Control Valve
Depending upon the location in the reclaimed water distribution system the control valve
shall be the following and sized to the same size as the meter.
Control valve with motor actuator
See Section XVI Approved Product List for control valve with motor actuator. 110 volt,
single phase, open/close service with the following:
Multi voltage: 110VAC, 240VAC, 480VAC, 24VDC8 S.P.D.T. limit switches;
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2 position potentiometers;
4-20 mA signal input for PID flow control;
4-20 mA signal output for indication of % of valve open position;
Electromechanical Solid State starter;
3-button, 2-lite pushbutton station;
Complete adapting package to the control valve with the actuator mounted and all
switches set suitable for continuous modulating duty.
D) Control Panel & Remote Telemetry Unit (RTU)
The developer or contractor shall procure the services of DCR Engineering Services,
Inc., Revere Control Systems, Inc., Start Controls, CC Controls, or Curry Controls or
approved alternate provider as the provider for design, manufacture and installation of
the site Remote Telemetry Unit (RTU) controller/display panel. The Department’s
requirements for each site will be determined by the location of the controller in the
reclaimed water distribution system and will be provided at the time of the preliminary
plan review.
Standards for a Reclaimed station Remote Telemetry Unit (RTU).
A Remote Telemetry Unit (RTU) does not include all of the instrumentation required for
the station, as the requirements of each station’s instrumentation can change and each
may be unique. However the design incorporates the ability to monitor and control
valves to do the following:
 Deliver the product at a user definable total amount.
 Deliver the product at a user definable flow rate. (Stations with flow
control valves).
 Automatically reset based on a start time for each day. (Can be
disabled.) Allow manual starting, stopping and suspending of the
delivery cycle.
 Display and generate “canned reports” on all functions controlled and
monitored by the Remote Telemetry Unit (RTU) using TriHedral VTScada
HMI software.
Panels will be built to UL508 standards using a panel with three (3) point latch, dead front,
36”x 30”x 16” NEMA 12/3R, SS 316, welded complete with welded drip shield. Panel will
be designed to receive 110VAC for power to the panel and instrumentation only.
The panel shall include main and secondary breakers, GFI receptacle, maintenance light
with switch and all other items as specified and shown in the details.
Station electrical service is NOT a part of this panel and will require a separate
distribution load center and service isolation to be provided by the general/electrical
contractor. It is also the responsibility of the general/electrical contractor to insure that
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all underground/pad conduit work is completed prior to completion of concrete slab on
grade.
Equipment that is required to be installed in the Remote Telemetry Unit (RTU).
 1 Motorola-ACE 3 slot Module panel
 1 cellular modem
 1 CPU Module
 1 Modular Power Supply, 85-264 VAC, 47-63 Hz
 2 V245 Mixed I/O modules (16 DI, 4 DO, 4 AI) with 24VDC option modules
 1 V224 Tamper Switch
 1 Low Profile antenna
 1 Additional I/O as required per station
 Panel meters will be the type specified by the Department so as to conform
to
 customer’s current “spares” requirement.
 Digital information display.
 1 GFI 110VAC receptacle to be mounted on the swing panel dead front.
Telemetry Automated Control and Display functions.
 Current Flow Rate. (Signal to be pulse output) Display PSI of system.
(Signal to be 4-20ma) Display Pond Level. (Signal to be 4-20ma) Display
Cut-Off Float/level from level sensor.
 Display Total Flow per period of Allotment Set Point.
 Display Station Auto/Manual (Local Control/ Remote “telemetry” Control).
 Control Start Delivery Cycle. Control Stop Delivery Cycle.
 Control Hour Set Point to Automatically Start Cycle. Control Valve Control.
o Open/Close (north area).
o % Open (south area).
 Flow Control set point in GPM .
 Total Allotment Set Point GPD (gal/day).
 AC Power loss Remote Telemetry Unit (RTU).
 Ability to utilize a laptop computer to enter control values normally entered
via telemetry.
Local Control and Display Functions.
 Current Flow Rate
 Panel Light Switch (20watt Fluorescent Light)
 Display Panel Power Light to indicate Power to Remote Telemetry Unit
(RTU) electronics.
 Manual override of valve.
o 3 position momentary switch (spring loaded) Open/Close
o 3 position maintain Local-Off-Remote
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 Display of pond level (loop with meter).
 Open/Closed lights (digital valves). Local digital display for the following. o
Total flow of current cycle.
o Current flow rate.
Additional equipment requirements.

24VDC 50-watt power supply fused at ½ the rated capacity to meet UL
508 standards with battery backup.
Instrumentation requirements.



Flow meter requires an output that can be connected to the Remote Telemetry
Unit (RTU), with a DC pulse signal to indicate flow. The metering device should
also have a mechanical type local register to indicate flow and totalization.
Pressure devices require an output of 4-20ma.
Level sensing devices require an output of 4-20ma signal.
Panel construction and testing will be done by the panel manufacturer.
E) Standard Metering Facility Components
The lake level detector is listed in Section XVI Approved Product List.
The
general/electrical contractor shall provide an appropriate power supply from the panel, a
properly designed and installed still-well and include a level indicator in the panel. The
indicator, display unit, and pressure transmitter are listed in Section XVI Approved
Product List.
The upstream above ground manual butterfly valve shall be a flanged one-hundred fifty
(150) psi hand wheel operator manufactured by Dezurik.
The air/vacuum valve shall have a 2-inch diameter inlet rated at one-hundred fifty (150)
psi as manufactured by manufacturer listed in Section XVI Approved Product List.
18. Start-Up and Testing
Developer or Engineer shall provide the following items on reclaimed water meter station
start-up.
A)
Deed to property, plat showing easement, or Board of County Commission
approved utility easement.
B)
Operation and Maintenance Manuals (three (3) sets required).
C)
Meter and control equipment data and technical information concerning
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operation, maintenance and repair shall be supplied at the time of
completion of meter station construction. Parts lists, warranties, and all other
pertinent information is also required. All equipment shall be warranted by
the manufacturer for one (1) year from the date of start-up.
D)
Individual schematic wiring diagrams and information concerning Control
Panel operation and parts replacement.
E)
Verification of operational approval by Manufacturer's Representative and
Engineer in writing.
F)
Contractor shall have tested the complete system prior to final start-up.
A certified factory trained representative shall be provided by the contractor for the start-up.
No start-up can begin without the Department representative on site.
19.
Public Notification
Advisory signs must designate the nature of the Reclaimed and must be posted in areas
where Reclaimed is practiced.
Advisory signs shall be posted at entrances to golf courses including the first and tenth
tees and entrances to residential neighborhoods where reclaimed water is used for
landscape irrigation. These Advisory signs must include the text: “Do Not Drink” in English
and “No Beber” in Spanish together per drawing number 80.
Advisory signs shall be posted adjacent to lakes/ponds or other decorative water features
used to store reclaimed water. These advisory signs must include the text: “Do Not Drink”,
“Do Not Swim”, and “No Beber”, “No Nadar” in English and Spanish, respectively, together
per drawing number 80.
There are no specific size requirements for advisory signs, nor are there any requirements
on the number of signs to be provided at sites using reclaimed water. The use of purple as
a prominent color on advisory signs and written notices is recommended. However, all
signs shall be clearly legible, and enough signs shall be posted to ensure reasonable
notice to the public.
Further reference to the requirements of advisory signs may be found in FDEP Rule
62-610.468, F.A.C. Also, reference the Department’s Standard Details.
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Section X - PRESSURIZED RECLAIMED CONNECTION CONTROLS
1. General
It is the intent of this specification to provide Martin County a means to control and monitor
the delivery of Reclaimed water to each connection point of the distribution system.
The pressurized Reclaimed system shall be constructed where the County determines that
a pressurized system is needed.
The controls, which are normally located at the delivery point of each development, will
consist of the following components: (see details)
A)
A Reclaimed Control Panel (RCP), including a programmable Motorola ACE
control system, Sierra Wireless cellular modem provide by DCR Engineering
Services, Revere Controls Systems, Star Controls, CC Controls, Curry Controls, or
approved alternative provider and flow indicator/interface to receive pulse signals
from a flow transmitter.
B)
A 117 VAC power supply (fifteen (15) amp minimum) to power Reclaimed Control
Panel (RCP) and control valve.
C)
A flow sensor device that transmits a signal to a pulse output transmitter.
D)
A master valve with maximum flow/pressure reducing and 120 AC volt solenoids.
E)
A flow transmitter that sends pulse signals to a flow indicator/interface in the
Reclaimed Control Panel (RCP).
F)
Surge protection with three (3) rods spaced eight (8) feet in a triangular grid as
detailed.
2.
Reclaimed Control Panel (RCP) and SCADA
The control panel shall combine electro-mechanical controls and a programmable
microprocessor based Remote Telemetry Unit (RTU) controller to be capable of fully
automatic or manual operation. The controls shall be housed in a sixteen (16) gauge
seamless NEMA 3R/12 stainless steel enclosure with drip shield and padlockable three (3)
point latch. Enclosure shall be mounted on the power pedestal.
The control panel shall operate on 117 VAC and be capable of actuating up to two (2) 120
VAC 7VA solenoid valves per station, plus a master valve relay. The Reclaimed Control
Panel (RCP) controller output shall be protected against severe electrical surge using
isolation relays and/or surge protection devices.
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The Reclaimed Control Panel (RCP) shall be capable of manual operation and can be
programmed to run daily or weekly programs. Programs shall allow for a measured
quantity of Reclaimed water delivery during specified time intervals up to twenty-four (24)
hours. A high flow rate alarm shall override the running program and stop Reclaimed
water delivery until a reset command has been entered through the SCADA system.
Program schedules and set points shall be entered through the SCADA system
interface.
The controller shall have a twelve (12) VDC rechargeable battery and recharging circuit to
compensate for power outages.
The Remote Telemetry Unit (RTU) shall have status indicator lights. These lights will
indicate station operation, I/O and communications status and circuit integrity.
The controller shall be Motorola ACE. Remote communications with existing telemetry
system is by cellular modems and shall be provided by DCR Engineering Services, Inc., Revere Control
Systems, Star Controls, CC Controls, Curry Controls or approved alternative provider.
The Reclaimed Control Panel (RCP) shall be manufactured by a qualified control panel
manufacturer with prior experience with this equipment and include all components
required for a complete control system, even if not specifically called out in these
standards. The panel shall bear the UL508 label.
The contractor will be responsible for providing and installing the Reclaimed Control
Panel (RCP). Martin County Utilities to provide Remote Telemetry Unit (RTU)
programming and HMI modifications.
A) Supervisory Control and Data Acquisition
The Reclaimed Control Panel (RCP) shall utilize the cellular communications for
remote control and data acquisition. The Reclaimed Control Panel (RCP) will
communicate with existing Field Interface Units (FIU) at the water plant which then
processes the data and interfaces with the utilities Lift Station/IQ SCADA system
software. The utility’s SCADA software is VTS by Trihedral Engineering with custom
graphical interface by DCR Engineering Services, Revere Control Systems, Star
Controls, CC Controls, or Curry Controls or approved alternate provider. Remote
control commands and site programming configurations are accomplished using the
graphical user interface screens of the SCADA software.
Martin County Utilities will be responsible for required additions to the SCADA
screens and databases to accommodate the new equipment.
B) Setup and Field Testing
The contractor installing the control system shall engage the equipment manufacturer’s
representative to calibrate and field test the Reclaimed Water Control Panel, radio
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communications and SCADA modifications to insure proper communication link and
control strategy between the Martin County SCADA computer terminal and the
Reclaimed Control Panel (RCP) via a Verizon private network
3. Reclaimed Water Sensor
A) Sensor Selection
Unless specified by model number on the drawings, the flow sensor shall be selected
by mounting location and by flow measurement range.
Sensors shall be selected/sized by the required flow measurement range. Refer to
Hardware, Subsection 2 (below).
B) Mechanical Installation
1. General
The accuracy of flow measurement for all flow measuring devices is highly
dependent on proper location of the sensor in the piping system. Irregular flow
velocity profiles caused by valves, fittings, pipe bends, etc. can lead to inaccurate
overall flow rate indications even though local flow velocity measurement may be
accurate.
A) Choose a location along the pipe where five (5) pipe diameters upstream and
three (3) pipe diameters downstream of the sensor provide no flow disturbance.
Pipe bends, valves, other fittings, pipe enlargements and reductions should not
be present in this length of pipe.
2. Hardware
Point of connection (P.O.C.) piping and control valve shall be no smaller than twoinches.
2-inch and 2½-inch P.O.C. – All piping will be BRASS
Flow Sensor – Model ML-04-D with remote flange mount kit by Water Specialties.
Ball Valve – Brass
All nuts, washers & bolts are to be Stainless Steel
3-inch and up P.O.C. – Piping will be Ductile Iron
Flow Sensor – Model ML-04-D by Water Specialties with remote flange mount kit
Shut Off Valve – Resilient seat gate valve (U.S. Pipe “METRO SEAL” or equal)
All nuts, washers & bolts are to be Stainless Steel
Reducing bushings shall not be allowed
Ball Valve – Brass
All nuts, washers & bolts are to be Stainless Steel
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C) Electrical Wiring
1. Contractor shall utilize wiring supplied with the remote mount kit. Mount indicator
(FC100) on the Reclaimed Control Panel (RCP). Wire is supplied and
terminated from the meter head to the Indicator/Totalizer (TEC100). Wire is also
supplied to terminate at the Remote Telemetry Unit (RTU).
2. Grounding
Grounding system meeting a minimum resistance of five (5) Ohms or less shall be
installed at each transmitter location. Ground rods shall be 5/8-inch diameter X 8’0”
copper clad steel. Connectors shall be solid copper clamps with connecting wire at
least one (1) size larger than any other wire on the same device. The number and
pattern of ground rods shall be chosen to provide the required maximum resistance.
D) Transmitter Indicator/Interface
The flow transmitter (FC100) shall be connected to a device, the Indicator/Interface,
in the Reclaimed Control Panel (RCP) that interprets the digital signal and provides a
signal that will interface with the control system and a visual display of the flow rate
and total. Shall be Red Lion PAX2 with Modbus Card.
1. Mounting
The Indicator/Interface will be supplied, installed and wired as part of the control
panel by the Reclaimed Control Panel (RCP) manufacturer and mounted on an
inner dead-front door.
2. Wiring
All power supply, sensor, and interface output wiring shall be made in a work like
manner conforming to the National Electric Code and local ordinances. All wiring
shall be color-coded or tagged to maintain functionality and polarity. Any wire
connections shall be made to screw type terminal strips using crimp on spade lug
connections of the appropriate size.
E) Start-up Procedure
When the installation is complete, the equipment manufacturer’s representative shall
verify that all the equipment has been installed and transmitter/monitors have been
correctly programmed. With the system running, the equipment manufacturer’s
representative verify output signals from each sensor, inputs to transmitter/monitors
and correct transmitter outputs.
1. An eight (8) hour time window (seven (7) days a week) for irrigation will be set at all
site Reclaimed Control Panels (RCP), beginning at 10:00 PM and finished by
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6:00 AM. Martin County must approve any deviation from this schedule.
4. Automatic Control Valve
The Automatic Control Valve shall maintain a maximum (adjustable) flow rate regardless of
changes in demand or inlet pressure variations. The valve will also modulate to maintain a
constant (adjustable) downstream pressure. The valve shall be equipped with a solenoid
intercept that will close the valve drip-tight upon actuation. Valve manufacturer for pilot set
points and individual orifice bore sizes shall determine control ranges. The valve shall be
equipped with an orifice bore assembly that will fit between two (2) standard pipeline
flanges; no pilot tubes shall be allowed.
The valve shall be hydraulically operated, diaphragm actuated, and angle pattern. The
valve shall be single chamber with a single diaphragm. The diaphragm assembly shall be
the only moving part and shall form a sealed chamber between the valve body and cover,
allowing for a separation of operating pressure and pipeline pressures. Internal packing
glands are not permitted within the main valve. The valve body shall be stainless steel*
construction with stainless steel trim. The valve shall have 125/150 lb. flanged ends
(stainless valves shall have steel flanges). The valve must be fully serviceable in the
pipeline, and the diaphragm may not be used as a seating surface. The main valve and
controls shall be manufactured in the United States of America.
*
Valves 4-inches and larger to have stainless steel body. Valves 3-inches and
smaller to be cast iron epoxy coated on the inside and outside with stainless steel
trim.
The main valve shall have a single removable stainless steel seat that seals against a
resilient, synthetic rubber disc. This disc shall have a rectangular cross section and be
surrounded on three and one-half sides of the cross section by the module formed by the
disc retainer and the stainless steel contoured disc guide. No O-ring type discs shall be
permitted as the seating surface interface. The main valve stem shall be fully guided at
both ends by a bearing in the valve cover and an integral bearing in the stainless steel
seat. The seat shall have a five (5) degree higher taper on the seat diameter, so as to
insure drip tight shut off. The cover bearing shall be aligned so as to permit freedom of
movement of the diaphragm assembly; center guides in a single chamber valve are not
permitted.
Machined surfaces in the body and cover shall fully support the diaphragm throughout the
valve stroke and over the entire three-hundred sixty (360) degrees of the diaphragm
radius. The flexible, non- wicking diaphragm shall be FDA approved and consist of
nylon fabric bonded with synthetic rubber compatible with chlorinated Reclaimed water.
The center hole accommodating the main valve stem must be sealed by vulcanized
rubber grommet. The diaphragm must withstand a Mullins Burst Test of a minimum of sixhundred (600) psi per layer of nylon fabric and shall be cycle tested 100,000 cycles to
insure material longevity.
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The control valve shall utilize a solenoid valve operating at one-hundred twenty (120)
VAC for opening and closing of the control valve. Additional manually operated ball
valve(s) shall be plumbed in parallel with the solenoid valve to allow manual means to
open and close the control valve in case of failure of the electrical devices.
The control valve shall be warranted, by the manufacturer, to be free from defects in
material and workmanship for a period of three (3) years from the date of shipment,
provided the valve is installed and used in accordance with published instructions and
application recommendations. Components supplied as part of the pilot control circuitry,
but not manufactured by the valve manufacturer shall convey individual warranties; these
warranties shall never be less than one (1) year from date of assembled valve shipment.
The valve manufacturer shall be capable of providing a complete cavitation profile to Martin
County for each subject valve installation. Installing Contractor shall provide factorytrained representative for start-up and training services to Martin County as part of
start-up process. The control valve representative must be fully qualified for warranty
and non-warranty service and not subcontract for these services.
Valve shall be inch angle pattern, with 125/150 lb. Flanged ends. The valve shall be AMES
Co., Inc., 4-inches and larger model 951/651 A-15-43-02-38-SS-2Pg, 3-inches and smaller
model 951/651 AD-15-43-02-38-2Pg as manufactured by AMES Co., Inc., Woodland CA
95776. Note: Select 951 full ported or 651 reduced port valve based on best match to flow
requirements.
Developer shall submit signed and sealed flow calculations from his Engineer of Record
or Registered Landscape Architect complete with manufacturer’s data for review and
approval by Martin County Utilities and Solid Waste.
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SECTIONS XI - RESERVED FOR FUTURE USE
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SECTION XII - RECORD DRAWINGS
1. General
DESCRIPTION: The work covered under this section shall include furnishing the
Department all information necessary for a complete set of Record Drawings.
APPLICABLE CODES, STANDARDS AND SPECIFICATIONS: The Record Drawings
information shall be in strict accordance with the following codes and standards:
A) Local County and Municipal Codes.
B) Florida Department of Environmental Protection.
C) State of Florida Department of Health and Rehabilitative Services.
RESPONSIBILITY: The Contractor and or Developer shall be required to provide Record
Drawings as outlined in this section.
2. Products
RECORD DRAWINGS: The Record drawings shall correctly and accurately show all
changes from the Contract Documents made during construction and shall reflect
surveyed information which shall be performed by a Florida Professional Surveyor and
Mapper and shall include any and all necessary dedicated utility easements (noted with
O.R. Book/Plat Book and Page numbers). The drawings shall be neat and legible.
Show all elevations and horizontal control of all lift stations, gravity sewers including
laterals, force mains, water mains including services, reclaimed water mains and raw
water mains. Locations shall be made by reference to the baseline stationing with
offsets or by other means acceptable to the Department. Elevations shall be according
to the North American Vertical Datum of 1988 (NAVD 1988).
Each sheet of the Record Drawings shall clearly state the horizontal & vertical datum
utilized to prepare the Record Drawings. Record Drawing plan sets shall include a
minimum of two (2) horizontal control points. If the control points used during design are
included on a Project Network Control (PNC) sheet, then the Project Network Control
(PNC) sheet shall be included in the record drawing plan set.
Record Drawings shall use State Plane Coordinates for all as-built utility features and
shall be signed and sealed by the Engineer of Record or Professional Land Surveyor
that complies with all applicable Florida Statutes.
The surveyor preparing the as-built drawings shall use the Engineer of Record’s
approved utility plan and profile sheets as a basis for the field observations. The
surveyor shall strike through design information with a single line and provide as-built
data immediately adjacent in a bold font. Any significant deviation of horizontal or
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vertical alignment shall be depicted on the drawing and the design line work struck
through.
A)
Water, Force, and Reclaimed Water Mains: Record Drawings shall show the
following field information:
1.
2.
3.
4.
5.
6.
7.
8.
9.
B)
Show size, type of material, used to construct mains.
Show location and elevation of all tees, crosses, bends, terminal ends,
valves, fire hydrants, air release valves, service taps, and sampling points,
etc., by distances from known reference points and provide coordinates.
Show location, size and type of material of all sleeves, saddles, and casing
pipes.
Elevation and horizontal location of all storm sewers, gravity sewers including
laterals, force mains, water mains, etc. which are crossed; including
clearance dimension at all conflicts or crossings.
Top of pipe elevation and horizontal location of all water and force main stubouts.
Location of all services to the property lines, including service material and
locations for taps and valves.
Top of pipe vertical and horizontal location and size of all mains and ground
elevation at one-hundred (100) foot intervals. Contractor shall construct
temporary tell-tale pipes at each of the one-hundred (100) foot intervals at
every fitting, and every conflict/crossing to facilitate the record drawing
survey. The one-hundred (100) foot centered locate balls shall be placed
directly adjacent to the tell-tales. The tell-tale pipes shall be constructed of
2-inch Polyvinyl Chloride (PVC) pipe, shall be placed on the centerline top of
the pipes to be surveyed, plumb and shall be removed by the Contractor
after completion of the field survey by the “As-Built” professional Surveyor.
Location of fire lines.
Dedicated easement locations, identified by Plat Book and Page or Official
Book and Page.
Gravity Sewer: Record Drawings shall show the following surveyed information:
1.
2.
3.
4.
5.
6.
7.
Manholes: Elevation of top rim and invert of each influent and effluent line.
Show distance between manholes center-to-center and horizontal location.
Show material size and type used to construct sewer mains.
Show length (center of manhole to end of stub) distances from known
reference points or baseline offsets, and elevation of stub-outs.
Show which services have twenty (20) foot length of Ductile Iron Pipe
(DIP) at water main crossings.
Show station and offset location of sanitary services at property line.
Particular care in dimensioning needed in special situations, i.e., cul-de-sacs
and locations where services are not perpendicular to wye.
Show invert elevation of sanitary service at property line. Show locations of
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8.
C)
service including cleanouts.
Any and all necessary dedicated easement locations, identified by O.R. Plat
Book and Page Number.
Pump/Lift Station: Record Drawings shall show elevations for top and bottom and
diameter of wet well along with invert of influent line. Record Drawings shall
indicate the make, model number, horsepower, impeller and condition point of
pumps selected and installed, shape of wet well, location of control panel, location
of pump out connection, float level settings, any deviation from the plans, and serial
number of the pumps.
3. Execution
RECORDS: Daily records of changes in location of piping, fixtures and other items shall
be kept and recorded on the Record Drawings. The contractor, developer or
developer’s engineer/surveyor shall submit monthly progress reports containing the
record information including copies of the signed and sealed surveyor’s field notes.
The contractor, or developer’s engineer shall review the completed Record Drawings and
ascertain that all data furnished is accurate and truly represents the work actually installed.
No Record Drawing information will be accepted by the Department from subcontractors.
For horizontal directionally drilled segments of pipe mains, a pre-drill survey shall be
performed by a Professional Surveyor and Mapper to obtain reference measurements as
required to tie the Horizontal Directional Drill (HDD) tracking information from the driller to
the project survey control. As a minimum this will include vertical (NAVD 1988) and
horizontal location at the point of entry for the borehole. This shall include the alignment
vector for the drill rig relative to the project control baseline survey.
SUBMITTAL: Upon completion of the work, but prior to submittal of request for final
payment or final acceptance, the contractor or developer’s engineer shall obtain and
submit record information certified by a Florida Professional Surveyor and Mapper. One
PDF of the plan sheets, profiles, details and lift station shall be provided for initial review.
The print shall be signed and sealed by the Florida Professional Surveyor and Mapper
and the Florida Professional Engineer responsible for certifying the project. All sheets
must include the vertical datum and horizontal datum used in easily readable print. Upon
Martin County Utilities approval of the PDF file, electronic Record Drawing CAD files shall
also be provided as follows:
One (1) digital Record Drawing CAD file saved in the original format as designed, but
being AutoCAD version 2010 - 2014.
One (1) digital Record Drawing saved in PDF format as an exact reproduction of the
signed and sealed Record Drawing on paper, without signature or seal with a resolution
of 1200 dots per inch (DPI).
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All Record Drawing information shall accurately depict all surveyed information with all
horizontal vector information being shown in the North American Datum of 1983 (NAD83)
and in the Florida East Zone State Plane Coordinate System or the latest NGS Adopted
Datum using U.S. Survey Feet as the unit of measurement.
CAD FILES: The digital Record Drawing CAD file shall follow these general standards
for inclusion in the Utility’s Geographic Information System (GIS):
The surveyor shall prepare a single AutoCAD file of the as-built data. Any large
aerials or similar image files should be uploaded and all appropriate project x-ref
files bound before saving the file. Do not use e-transmit to prepare the files as it
creates multiple files.
All Record Drawing Piping information shall be placed on separate layers by piping
type, diameter and material.
All Record Drawing fixture information (fire hydrants, valves, meters, reducers,
tees, wyes, crosses, caps, etc.) shall be placed on separate layers by the piping
type they are attached to.
All piping shall be drafted as polylines; separated only at junctions or changes in
pipe diameter.
All piping polylines shall snap to one another at every junction and change in pipe
diameter.
4. Close-out
Once all required documentation is received by the Department, ten (10) days must pass
for processing. After the ten (10) day period, meters may be issued. (See form below)
CLOSE-OUT FORM
PROJECT NAME __________________________________________________
The following Documents are required prior to final release of water and/or wastewater
service and must be submitted as one complete package:
______
01. Two (2) sets of signed and sealed approved record drawings signed by the
Engineer of Record.
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______
02. One (1) copy of the electronic approved record drawing files on disc in
AutoCAD 2004+ DWG format, ArcGIS Shapefile format, ArcGIS File
Geodatabase format or Microstation v7 DGN format or any other previously
approved GIS format with all vector data being shown in the North American
Datum of 1988 (NAD88) Florida East Coast State Plane Coordinate System
using US Survey Feet as the unit of Measurement.
______
03. Final release of water system from DEP.
______
04. Final release of wastewater system from DEP.
______
05. Notarized Bill of Sale from Developer with itemized cost list, certified by a
Florida registered engineer, of materials used in construction of the water and
wastewater systems installed by the Developer/Contractor attached as Exhibit
page, $8.50 each additional). – or current fee
______
06. Maintenance Bond, Letter of Credit, CD or Check with pledge assignment to
be in the following amount: 100% of the first $5,000 of improvements plus 10%
of the balance of the cost of improvements. – or current fee
______
07. Developer’s No Lien Affidavit from the following:
___Developer
Release of liens from the following:
___Engineer
___Contractor(s)
___Contractor(s) principal supplier(s)
______
08. Board date scheduled for easement ______________________________
______
09. Agreement executed (signed by all parties and fees paid) ______________
______
10. GIS update fees as per the following: - or current fee
______$.75 per linear foot of pipe both on and off site + __________________
______$7.00 per potable water meter
__________________
Total:
__________________
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______
11. Bacteriological sample fee. A fee of $25 per sample will be incurred by the
Owner/Developer $__________. – or current fee
______
12. Final inspection completed with appropriate testing and clearances to
include the following:
______
bacteriological test results
______
pressure test results
______
video and log of all sanitary sewer lines
______
private lift station maintenance contract
______
lift station start-up log
______
o&m manual
______
backflow preventer(s) inspection signed off by Backflow
Coordinator (Non-Residential)
______
vacuum assisted pump for each lift station inspection
______
final inspection checklist (to be performed by MCU)
______
13. Copy of FPL Bill (meter #, account name, etc) to transfer electric service to
MCU for lift station.
______
14. Copy of FPL Bill (meter #, account name, etc) to transfer electric service to
MCU for I/Q.
Please allow ten (10) working days for meter installation from meter application
date.
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SECTION XIII – SODDING
1. Scope
The work covered under this section shall consist of furnishing all labor, materials, and
equipment necessary for the sodding of the areas indicated on the plans. The work
consists of placing of grass sod, watering and maintaining the sodded areas such as to
assure a healthy stand of grass.
2. Type of Sod
Unless a particular type of sod is called for, sod shall be Argentine Bahia grass. It shall be
well matted with roots. Where sodding will adjoin, or be in sufficiently close proximity to
private lawns, other types of sod may be used if desired by the affected property owners
and approved by the Department. The sod shall be taken up in commercial-size rectangles,
preferably 12-inch by 24-inch or larger, except where 6-inch strip sodding is specified.
The sod shall be sufficiently thick to secure a dense strand of live grass. The sod shall be
live, fresh and uninjured, at the time of planting. It shall have a soil mat of sufficient
thickness adhering firmly to the roots to withstand all necessary handling. It shall be
reasonably free of weeds and other grasses. It shall be planted as soon as possible after
being dug and shall be shaded and kept moist from the time it is dug until it is planted. The
source of the sod may be inspected and approved by the Department prior to being cut for
use in the work. After approval, the area from which the sod is to be harvested shall be
closely mowed and raked as necessary to remove excessive top growth and debris.
Approved devices, such as sod cutters, shall be used for cutting the sod and due care shall
be exercised to retain the native root soil intact.
3. Water Source
The water used in the grassing operations may be obtained from any approved spring,
pond, lake, stream, or municipal water system. Water from a municipal system shall be
paid for by the Developer or Contractor. The water shall be free of excess and harmful
chemicals, acids, alkalis, or any substance that might be harmful to plant growth or
obnoxious to traffic. Saltwater shall not be used.
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4. Preparation of Ground
The areas over which the sod is to be placed shall be scarified or loosened to suitable
depth. On areas where the soil is sufficiently loose, particularly on shoulders and fill slopes,
the Department may authorize the elimination of the ground preparation.
5. Placing Sod
Whenever a suitable length of roadway has been graded and is ready for sodding, the
contractor shall, when directed by the Department, proceed at once with the sodding of the
available areas. Sodding shall be incorporated into the project at the earliest practical time
in the life of the contract. No sod which has been cut for more than seventy-two (72) hours
shall be used unless specifically authorized by the Department after careful inspection
thereof. Any sod which is not planted within twenty-four (24) hours after cutting shall be
stacked in an approved manner and maintained properly moistened.
Sodding shall not be performed when weather and soil conditions are, in the Department's
opinion, unsuitable for proper results.
The sod shall be placed on the prepared surface, with edges in close contact, and shall be
firmly and smoothly embedded by light tamping with appropriate tools.
Where sodding is used in drainage ditches, the setting of the pieces shall be staggered,
such as to avoid a continuous seam along the line of flow. Along the edges of such
staggered areas the offsets of individual strips shall not exceed 6-inches. In order to
prevent erosion caused by vertical edges at the outer limits, the outer pieces of sod shall
be tamped so as to produce a featheredge effect.
On areas where the sod may slide, due to height and slope, the Department may direct
that the sod be pegged, with pegs driven through the sod blocks into firm earth at suitable
intervals.
Any pieces of sod which, after planting, show an appearance of extreme dryness shall be
removed from the work.
6. Watering
The areas on which the sod is to be placed shall contain sufficient moisture, as determined
by the Department, for optimum results after being placed. The sod shall be kept in a moist
condition for the duration of the contract period (and in no case less than two (2) weeks).
The moist condition shall extend at least to the full depth of the rooting zone. Water shall
not be applied, however, when there is danger of a freezing condition.
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7. Maintenance
After installation the sod shall be adequately maintained. One (1) cutting shall be
performed thirty (30) days after installation and thereafter for two (2) intervals of
approximately six (6) weeks. Acceptance of sod will not be prior to 150 days after
installation to insure that an acceptable cover is provided.
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SECTION XIV - INSPECTIONS AND AUTHORITY OF INSPECTORS
The Department Inspectors may inspect all construction and materials and may also
inspect preparation, fabrication or manufacture of components, materials and supplies.
The Inspector is not authorized to revoke, alter or waive any requirements of the
specifications, but is authorized and expected to call to the attention of the Developer's
Engineer and/or Contractor any failure of work or materials to conform to the plans or
specifications. The Inspector shall have the authority to reject materials or suspend the
work until questions of issue can be referred to and decided upon by the Department
Director or his designated representative.
The Inspector shall in no case act as foreman or perform other duties for the Project
Engineer and/or Contractor nor interfere with the management of the work. Advice, which
the Inspector may give, shall in no way be construed as binding to the County or releasing
the Developer, his Engineer or Contractor from performing according to the intent of the
plans and minimum County Standards.
Inspections will be scheduled for regular working hours only, except for nights when service
disruptions are involved. Scheduled inspections are required for jack and bores and pipe
slippage through same, setting of wet wells, pipeline pressure testing, lift station startups
with manufacturer’s representative present, active directional drilling, material inspection,
main inspection before burial, and any time an existing County facility is to be connected
(i.e., manhole tie-in and water or sewer taps). Work will not be scheduled for weekends
or holidays.
The Department should be provided with at least two (2) full working days’ notice for
scheduled inspections. Inspectors will make routing passes on call to inspect such items as
thrust restraints, materials on site and clearances between conflicting lines.
It shall be the Developer's Engineer's responsibility to schedule inspections and their
qualified representative shall be present at all scheduled tests and inspections. A
scheduled inspection will be canceled if the representative is not present. The Developer's
Engineer shall pretest pressure tests and lampings to minimize failures. The Developer's
Engineer shall prepare accurate Record Drawings which shall be submitted to the
Department two (2) days before a lamping to verify adequacy of slopes. In any case,
Record Drawings must be submitted prior to service being provided to any phase of a
project.
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SECTION XV
MANUAL OF CROSS-CONNECTION CONTROL AND BACKFLOW PREVENTION
1. Introduction
A cross-connection is defined in the rule of the Florida Department of Environmental Protection
(FDEP), Chapter 62-550 Florida Administrative Code (F.A.C.) as “any physical arrangement
whereby a public water supply is connected, directly or indirectly with any other water supply
system, sewer, drain, conduit, pool, storage reservoir, plumbing fixture, or other device which
contains or may contain contaminated water, sewage or other waste or liquid of unknown or
unsafe quality which may be capable of imparting contamination to the public water supply as
the result of backflow. By-pass arrangements, jumper connections, removable sections, swivel
or changeable devices and other temporary or permanent devices through which or because of
which backflow could occur are considered to be cross connections.” Consequently, either
cross-connections or the chance of backflow must be eliminated to prevent degrading the high
quality of water that water suppliers strive to maintain.
The Rules of the FDEP, Chapter 62-555, F.A.C. require the following:
Community water systems, and all public water systems which have service areas that are also
served by reclaimed water systems as defined in Chapter 62-610, Part III, F.A.C., shall establish a
routine cross-connection control program to detect and prevent cross-connection that create or
may create an imminent and substantial danger to public health. This program shall include a
written plan that is developed using accepted practices of the American Water Works
Association as set forth in “Recommended Practice for Backflow Prevention and CrossConnection Control”, Manual M14 and “Cross Connections and Backflow Prevention, 4th
Edition.”
Cross-connection control programs specific to reuse systems shall consider the following:
a) Enhanced public efforts toward prevention of cross-connections, and
b) Enhanced inspection programs for portions of the distribution system in areas of reuse of
reclaimed water for detection and elimination of cross connections.
Upon discovery of a prohibited cross-connection, public water systems shall either eliminate the
cross-connection by installation of an approved backflow prevention device acceptable to the
Florida Department of Environmental Protection (FDEP) or shall discontinue service until the
contaminant source is eliminated.
2. General
Purpose
It is the purpose of this manual to establish a policy and regulations concerning crossconnections and backflow prevention devices for protection of the County’s water systems;
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requiring installation, inspection, testing, maintenance and repair of the devices.
The purpose of this policy is to protect the public potable water supply of Martin County
Utilities from the possibility of contamination. To promote the elimination or control of
existing cross-connections, actual or potential, between its customers’ on-site plumbing
fixtures and industrial piping and the public water supply; and to provide for the
maintenance of a continuing program of cross-connection control which will systematically
and effectively prevent the contamination of the potable water distribution system. More
specifically, the policy is intended to prevent delivered water (water that has passed
beyond the public water system and is in the private distribution systems of consumers)
from re-entering the public distribution system and being subsequently delivered to
consumers and to allow a customers’ active piping design and installation to incorporate
and install appropriate backflow prevention devices correctly.
A. ACCESS TO PREMISES FOR INSPECTION AND TESTING
Martin County Utilities shall have free access to the premises of any user of its water
supply for the purpose of inspecting, and/or testing the backflow devices installed or to
inspect the premises to determine if there are any cross-connections. If installation is
required, then appropriate backflow devices shall be installed so that they are easily
accessible for inspection, testing, maintenance and repair.
B. CAUSE OF BACKFLOW
The cause of backflow cannot be eliminated completely since backflow is often initiated by
accidents or unexpected circumstances. However, some cause of backflow can be
partially controlled by good design and informed proper maintenance. Listed below are the
many causes of backflow as outlined under the two (2) types of backflow: back-siphonage
and backpressure.
1. Back-siphonage – Back-siphonage is caused by reduced or negative pressure
being created in the supply piping. The principal causes of back-siphonage are:
a) A line repair or break, which is lower in elevation than a service point. This will
allow negative or reduced pressures to be created by water trying to flow to a lower
point in the system.
b) Undersized piping, if water is withdrawn from a pipe at a very high velocity, pressure
in the pipe is reduced and the pressure differential created can cause water to flow
into the pipe from a contaminated source.
c) Lowered pressure in water main due to high water withdrawal such as fire fighting,
water main flushing, or water main breaks.
d) Reduced supply main pressure on suction side of a booster pump.
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2. Backpressure – Backpressure may cause backflow to occur where a potable
water system is connected to a non-potable system of piping, and the pressure in
the nonpotable system of piping exceeds that in the potable system. The principal causes
of backpressure are:
a) Booster pump system designed without backflow prevention devices.
b) Potable water connections to boilers and other pressure systems without
backflow prevention devices.
c) Connections with another system which may, at times have a higher pressure.
d) Water stored in tanks or plumbing systems which by virtue of their elevation
would create head sufficient to case backflow if pressure were lowered in the public
system.
3. Prohibitions of Cross-Connections
All cross-connections not protected by approved backflow prevention devices are
prohibited and shall be corrected within a sixty (60) day period following written notification
of the existing installation. In the case of proposed installations, approved backflow
devices must be installed prior to the installation of the water meter.
If the cross-connection poses a severe hazard to the public health, Martin County Utilities
shall be empowered to immediately terminate the customer’s water service until the
situation has been corrected.
It shall be unlawful for the customer to make or allow others to create a cross-connection of
potable water lines with either auxiliary water systems or piping and equipment containing
toxic, harmful or objectionable substances. The customer shall be held responsible for
adhering to this prohibition.
Backflow prevention assemblies shall be installed by the customer on the service
connection of any premises that has been identified by Martin County Utilities as having a
potential for backflow. Backflow devices shall be installed by the customer within the
premise if potable water is also used for industrial, commercial, and/or fire-fighting
purposes. Martin County Utilities Cross-Connection Control Manual shall serve as a guide
to defining potential cross-connection and the solutions for preventing backflow into the
County’s water supply system. Unless otherwise stated in this chapter or in other County,
State or Federal Laws and regulations, the recommendations of Manual M-14, AWWA,
Recommended Practice for Backflow Prevention and Cross-Connection Control shall apply
to both the customer and the County.
Backflow prevention assemblies must be tested and inspected once a year by a Certified
Tester. Maintenance and repair of the backflow prevention devices must be performed by a
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Certified Backflow Technician. The cost of this work shall be borne by the customer.
4. Responsibility
A. CROSS-CONNECTION PROGRAM
The responsibilities of the Martin County Utilities Department, Technical Services Division,
and Cross-Connection Control Program in accordance with the rules of FDEP Chapter 62555, F.A.C. are as follows:
1. To protect the Martin County water supply from the possibility of contamination by
isolating within its consumers’ private plumbing systems, contaminants or pollutants which
could, under adverse conditions, backflow through uncontrolled cross-connections into the
public water system.
2. To eliminate or control existing cross-connections, actual or potential, between the
consumers’ on-site potable water plumbing system(s) and non-potable water system(s),
plumbing fixtures, and industrial piping systems.
3. To provide a continuing inspection program of cross-connection control, which will
systematically and effectively control all actual or potential cross-connections which may be
installed in the future.
B. CUSTOMERS
The customers’ responsibility starts at the point of delivery from the public potable water
system and includes all of their on-site water system. The customer (at his own expense)
shall install, operate, test and maintain approved backflow prevention assemblies, as
directed by Martin County Utilities. The customer shall maintain accurate records of tests
and repairs made to backflow prevention assemblies and provide Martin County Utilities
with copies of such records. The records shall be on forms approved or provided by Martin
County Utilities. In the event of accidental pollution or contamination of the public or
consumer’s potable water system due to backflow on or from customer’s premises, the
owner shall promptly take steps to confine further spread of pollution or contamination
within the customer’s premises, and shall immediately notify Martin County Utilities of the
hazardous condition.
C. BACKFLOW PREVENTION ASSEMBLIES INSTALLERS
The installer’s responsibility is to make proper installation of backflow prevention
assemblies in accordance with the manufacturer’s recommended procedures for
installation and any additional instructions approved by Martin County Utilities. The
installer is also responsible for making sure an assembly is working properly when it is
installed, and is required to furnish the following information to the Cross-Connection
Control Program immediately after a backflow prevention device is installed:
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1.
2.
3.
4.
5.
6.
7.
8.
Service address where device is located,
Owner,
Description of assembly’s location and size,
Date of installation,
Type of assembly,
Manufacturer,
Model number, and
Serial number.
All RPZ, DDC, and PVB installations are required to be tested, after installation, by a
certified backflow prevention technician. Record keeping is discussed in further detail in
Item 8.
5. Inspections
A. FREQUENCY
Due to changes in models or components of equipment, methods of manufacturing and
additions to plants, buildings, etc., water use requirements may change. As a result new
cross-connections may be installed and existing protection may be bypassed, removed or
made otherwise ineffective; therefore, an annual detailed inspection by the customer of all
water usage is required. Actions for non-compliance are detailed in Section XIV.
B. PROPOSED CONSTRUCTIONS
All new construction plans and specifications for multifamily residential, industrial and
commercial facilities shall be reviewed by Martin County Utilities to determine the degree of
possible cross-connections hazard and applicable backflow prevention device
requirements. Facilities not listed shall be reviewed on a case-by-case basis. All proposed
construction classified as multifamily residential, commercial or industrial, where an
application is unknown or undetermined, a reduced pressure backflow assembly (RPBA)
shall be the minimum requirement.
C. NEW AND EXISTING FACILITIES
In order to determine the degree of hazard to the public potable water system, a survey will
be made of the consumer’s presently installed water system. This survey need not be a
detailed inspection of the location or disposition of the water lines, but can be refined to
establishing the water uses on the premises, the existence of cross-connections, and the
availability of auxiliary or used water supplies. On-site inspections are made of new and
existing facilities and should any devices or plumbing changes be required, a follow-up
inspection will be made of the same facilities at a later date.
6. Definitions
1. AIR-GAP SEPARATION – The term air-gap separation shall mean a physical
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separation between the free-flowing discharge end of a potable water supply pipeline and
an open or non-pressure receiving vessel. An approved air-gap separation shall be a
distance of at least two (2) times the diameter of the supply pipe measured vertically above
the top rim of the receiving vessel with a minimum distance of one-inch.
2. APPROVED DEVISE – Accepted by the Martin County Building Division or the Martin
County Utilities Department.
3. ATMOSPHERIC VACUUM BREAKER – A backflow prevention device which is
operated by atmospheric pressure in combination with the force of gravity. The unit is
designed to work on a vertical plane only. The one (1) moving part consists of a poppet
valve which must be carefully sized to slide in a guided chamber and effectively shut off the
reverse flow of water when a negative pressure exists.
4. AUXILIARY WATER SUPPLY – Any water supply on or available to the premises other
than the supplier’s approved public potable water supply. These auxiliary water supplies
may include water from another supplier’s water supply, a private non-potable water supply
or any natural source(s) such as a well, spring, river, stream, harbor, etc., or “used waters”
or “industrial fluids”. These waters may be contaminated or they may be objectionable,
and constitute an unacceptable water source over which the water supplier does not have
sanitary control.
5. BACKFLOW – The flow of water or other liquids, mixtures or substances, under
pressure, introduced into the distribution pipes of a potable water supply system from any
source or sources other than the intended source.
6. BACKFLOW PREVENTION ASSEMBLY – A backflow prevention assembly shall mean
any effective device, method or construction used to prevent backflow into a potable or
reclaimed water system. The type of assembly used should be based on the degree of
hazard, either existing or potential.
7. BACKFLOW PREVENTION ASSEMBLY, APPROVED – The term approved backflow
prevention assembly shall mean an assembly that has met the requirements of one (1) or
more of the following standards:
AWWA – C511-89 Standard for Reduced Pressure Principle Backflow Prevention
Assembly.
AWWA – C510-89 Standard for Double Check Valve Backflow-Prevention Assembly
ASSE – 1020 Pressure Type Vacuum Breakers
ASSE – 1024 Dual Check Type Backflow Preventer (Residential Service Connections)
ASSE – 1013 Reduced Pressure Principle, Back Pressure Backflow Preventers that have
met the laboratory and field performances specifications of the University of Southern
112
California Foundation for Cross-Connection Control and Hydraulic Research (USC-FCCC).
8. BACKFLOW PREVENTION ASSEMBLY CERTIFIED TECHNICIAN – The term
certified backflow prevention technician shall mean a person who has proven his
competency to the satisfaction of Martin County Utilities. Each person who is certified to
make competent tests or to repair, overhaul and make reports on backflow prevention
assemblies and shall be conversant with applicable laws, rules, and regulations and shall
have attended and successfully completed FW&PCOA (FLORIDA WATER AND
POLLUTION CONTROL OPERATORS ASSOCIATION) or TREEO (Training, Research,
and Education for Environmental Occupations Center, University of Florida) Florida
Plumbing and Backflow Association or any Training Agency endorsed by the American
Water Works Association (AWWA), certification programs for backflow prevention
assembly tester and repair specialist or other programs acceptable to Martin County
Utilities.
9. BACKPRESSURE – Backpressure shall mean any elevation of pressure in the
downstream piping system (by pump, elevation of piping, or steam and/or air pressure)
above the supply pressure at the point of consideration which would cause or tend to
cause, a reversal of the normal flow.
10. BACK-SIPHONAGE – The flow of water or other liquids, mixtures or substances into
the distribution piping of the potable water supply system from any source other than its
intended source caused by the reduction of pressure in the potable water supply system.
11. CONTAMINATION – An adverse impact of the quality of the potable water supply by
any solid, liquid, gaseous compounds or mixtures, to a degree, that would create a danger
to the public health, or would create an unacceptable test result, odor or color in the
potable water supply.
12. CROSS-CONNECTION – A cross-connection is defined in the rules of the Florida
Department of Environmental Protection (F.D.E.P.), Chapter 62-550 Florida Administrative
Code (F.A.C.) as “ any physical arrangement whereby public water supply is connected,
directly or indirectly with any other water supply system, sewer, drain, conduit, pool,
storage reservoir, plumbing fixtures, or other device which contains or may contain
contaminated water, sewage or other waste or liquid of unknown or unsafe quality which
may be capable of imparting contamination to the public water supply as the result of
backflow. By-pass arrangements, jumper connections, removable sections, swivel or
changeable devices and other temporary permanent devices through which or because of
which backflow could occur are considered to be cross-connections.”
13. CUSTOMER – Any person, business or other entity whose name or names appear on
billing for a water service connection.
14. DOUBLE CHECK VALVE ASSEMBLY – An assembly composed of two (2) single,
independently acting, check valves, including tightly closing shut-off valves located at each
end of the assembly and suitable connections for testing the watertightness of each check
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valve. A check valve is a valve that is drip-tight in the normal direction of flow when the
inlet pressure is one (1) p.s.i. And the outlet pressure is zero (0). The check valve shall
permit no leakage in a reverse direction of the normal flow. The closure element (e.g.,
clapper) shall be internally weighted or otherwise internally loaded to promote rapid and
positive closure.
15. DEGREE OF HAZARD - The term degree of hazard is a qualification of the potential
risk to public health and the adverse effect upon the public water system that may result
from cross-connections within a water using facility. Establishing the degree of hazard is
directly related to the type and toxicity of contaminants that could feasibly enter the public
water supply system as determined by Martin County Utilities.
16. HEALTH HAZARD – A cross-connection or potential cross-connection involving any
substance that could, if introduced in the potable water supply, cause death, illness, spread
disease, or have a high probability of causing such effects.
17. NON-HEALTH HAZARD – A cross-connection or potential cross-connection involving
any substance that generally would not be a health hazard but would constitute a nuisance
or be aesthetically objectionable, if introduced into the potable water supply.
18. PLUMBING HAZARD – A plumbing-type cross-connection in a consumer’s potable
water system that has not been properly protected by an approved air gap or an approved
backflow-prevention assembly.
19. SYSTEM HAZARD – An actual or potential threat of severe damage to the physical
properties of the public potable water supply system or the consumer’s potable water
system or of pollution or contamination that would have a protracted effect on the quality
of the potable water in the system.
20. INDUSTRIAL PIPING SYSTEM – CONSUMER’S – The term consumer’s industrial
piping system shall mean any system used by the consumer for transmission of or to store
any fluid, solid or gaseous substance other than an approved water supply. Such a system
would include all pipes that convey or store substances, which are or may be polluted or
contaminated.
21. PRESSURE VACUUM BREAKER – A pressure vacuum breaker is similar to an
atmospheric vacuum breaker except that the checking unit “poppet valve” is activated by a
spring. This type of vacuum breaker does not require a negative pressure to react and can
be used on the pressure side of a valve.
22. REDUCED PRESSURE BACKFLOW PREVENTER – An assembly containing within its
structure a minimum of two (2) independently acting, approved check valves, together with
an automatically operating pressure differential relief valve located between the two (2)
check valves. The first check valve reduces the supply pressure to a predetermined level
so that during normal flow and at cessation of normal flow the pressure between the check
valves shall be less than the supply pressure. In case of leakage of either check valve, the
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differential relief valve, by discharging to the atmosphere, shall operate to maintain the
pressure between the check valves at a pressure lower than the supply pressure. The unit
shall include tightly closing shut-off valves located at each end of the device, and each
device shall be fitted with properly located test cocks.
23. RECLAIMED WATER – Water that has received at least advanced secondary
treatment with high level disinfection and is reused after flowing out of a wastewater
treatment facility.
24. RESIDENTIAL DUAL CHECK – A compact unit manufactured with two (2) independent
spring actuated check valves. A residential dual check must be of the in-line type. The
residential dual check is acceptable only as added backflow prevention in areas served by
reuse systems defined in Chapter 62-610, Part III, F.A.C.
25. REUSE – The deliberate application of reclaimed water in compliance with the Florida
Department of Environmental Protection (FDEP) and South Florida Water Management
District (SFWMD) rules, for a beneficial purpose.
26. SERVICE CONNECTION – The terminal end of a service connection from the public
potable water supply system. If a meter is installed at the end of the service connection,
then the service connection shall mean the downstream end of the meter. There shall be
no unprotected connections from the service line ahead of any meter or backflowprevention assembly located at the point of delivery to the customer’s water system.
Service connection shall also include water service connections from a fire hydrant or any
and all other temporary or emergency water service connections from the public potable
water system.
27. WATER SUPPLIER – The term water supplier shall mean the owner or operator of the
public potable water supply system providing an approved water supply to the public. The
utility shall be one that is operating under a valid permit from the Florida Department of
Environmental Protection (FDEP). As used herein the term water supplier and Martin
County Utilities may be used synonymously.
28. WATER SYSTEM – CUSTOMER’S – The term customer’s water system shall include
any water system located on the consumer’s premises, whether supplied by a public
potable water system or any auxiliary water supply.
29. WATER-USED – Any water supplied by a water supplier from a public potable water
system to a customer’s water system after it has passed through the point of delivery and is
no longer under the sanitary control of the water supplier.
7. Potential Hazards and Required Protection
A. FACILITIES
1. Type of Backflow Protection Required: An approved backflow prevention device of the
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type designated shall be installed on each water service connection to the following types
of facilities. This list is presented as a guideline and should not be construed as being
complete.
Abbreviations used are as follows:
AG – Air Gap Separations
RPBA – Reduced Pressure Backflow Prevention Assembly
DCVA – Double Check Valve Assembly
PVB – Pressure Vacuum Breaker
AVB – Atmospheric Vacuum Breaker
RDCA – Residential Dual Check Valve Assembly
2. Guide to the Assessment of Hazard and Selection of Assemblies for Internal Protection
Assessment
of Hazard
Health
Health
Health
Health
Health
Health
Health
Health
Health
Health
Description of Cross Connection
Aspirator (Medical)
Bedpan washers
Autoclaves
Specimen tanks
Sterilizers
Cuspidors
Lab bench equipment
Autopsy and mortuary equipment
Sewage pumps
Sewage ejectors
Fire-fighting systems (toxic liquid)
foam concentrates
Connection to sewer pipe
Connection to planting tanks
Irrigation systems with chemical
additives or agents
Connection to salt-water cooling systems
Tank vats or other vessels containing
toxic substances
Connection to industrial fluid systems
Dye vats or machines
Cooling towers with chemical additives
Trap primer
Steam generators
Heating equipment
Commercial
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Recommended
Assembly at Fixt ure*
AVB or PVB
AVB or PVB
RPBA
AVB or PVB
RPBA
AVB or PVB
AVB or PVB
AVB or PVB
AG
AG
Health
Health
Health
RPBA
AG
RPBA
Health
Health
RPBA
RPBA
Health
Health
Health
Health
Health
Nonhealth+
RPBA
RPBA
RPBA
RPBA
AG
RPBA
Nonhealth+
RPBA
Domestic
Irrigation systems
Swimming pools:
Public
Private
Vending machines
Ornamental fountains
Degreasing equipment
Lab bench equipment
Hose bibbs
Trap primers
Flexible shower heads
Steam tables
Washing equipment
Shampoo basins
Kitchen equipment
Aspirators
Domestic space-heating boiler
Nonhealth+
Nonhealth+
DCVA
DCVA, AVB, PVB
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
Nonhealth+
RPBA, AG
PVB, AG
RPBA, PVB
DCVA, AVB, PVB
DCVA
AVB, PVB
AVB
AG
AVB, PVB
AVB
AVB
AVB
AVB
AVB
RPBA
*AVBs and PVBs may be used to isolate health hazards under certain conditions, that is,
back-siphonage situations. Additional area or premises isolation may be required.
+Where a greater hazard exists (due to toxicity or other potential health impacts) additional area
protection with RPBAs is required.
B. MINIMUM TYPE OF PROTECTION
DESCRIPTION
TYPE
1.
Premises having an auxiliary water system.
RPBA
2.
Premises having a water storage tank, reservoir, pond, or
similar appurtenance.
RPBA
Premises having a steam boiler, cooling system or hot water
heating system where chemical water conditioners are used.
RPBA
4.
Premises having submerged inlets to equipment.
RPBA
5.
Premises having self-draining yard hydrants, fountains,
hose boxes or similar devices presenting a health or system
hazard (i.e., chemical storage plants, tank farms, bulk
storage yards).
RPBA
3.
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6.
Premises having self-draining/yard hydrants, fountains, hose
boxes or similar devices presenting a pollution hazard (i.e., parks,
playing fields, cemeteries.)
RPBA
7.
Residential Multi-Family (three (3) or more Units served by a
single service line)
DCVA, RPBA
8.
Residential multi-story (two (2) stories or more )
DCVA, RPBA
9.
Others as specified by Martin County Utilities.
8. Record Keeping
It is essential that the program administrator of a cross-connection control program keep
adequate records of all transactions. In addition to keeping records of all correspondence,
particular emphasis must be placed on developing a record keeping system that
accommodates monitoring of the following:
1. Installation date of assemblies.
2. Location of backflow prevention assemblies.
3. Inspection and testing of backflow prevention assemblies, including the performance of
those backflow prevention assemblies
4. The performance of licensed testers
9. Fire Systems
A. TYPE OF BACKFLOW PROTECTION REQUIRED/FIRE PROTECTION SERVICES
Fire systems may be divided into six (6) general classes, as described in AWWA M-14.
Due to the variety of installation designs of fire systems which may preclude the use of a
meter, the point of service shall be defined as the last valve prior to the pre-OS&Y valve.
An approved backflow prevention assembly of the type designated shall be installed on
each fire protection service to any premises where the fire protection system contains any
of the components listed unless, Martin County Utilities determines that no real or potential
health, pollution, or system hazard to the public water system exists.
B. MINIMUM TYPE OF PROTECTION
DESCRIPTION TYPE
1.
Class 1 – a closed automatic fire system without pumper connection, i.e., a system
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having twenty (20) heads or less.
DCVA
2.
Class 2 – a closed automatic fire system with pumper connection. DCVA
3.
Class 3 – a closed automatic fire system with pumper connection and an auxiliary
water supply on or available to the premises; or an auxiliary water supply which may
be located within 1700 feet of the pumper connection.
RPBA
4.
Class 4 – a closed automatic fire system with a closed pressure tank supply (this
class may have a jockey pump inter-connected with domestic water supply and/or
an air compressor connection).
RPBA
5.
Class 5 – a closed automatic sprinkler system inter-connected with an auxiliary
water supply.
RPBA
6.
Class 6 – a fire system used for the combined purpose of supplying automatic
sprinklers, hose lines, fire hydrants, and standpipes and/or being used for industrial
purposes.
RPBA
A.
Self-Draining Fire Hydrants on premises presenting a health or system
hazard (i.e., Chemical Plants, Petroleum Storage Plants, Bulk Storage Yards,
Stock Yards, Sewer Plants, or similar facilities where ground seepage of
toxic materials may occur).
DCVA
B.
Self-Draining Fire Hydrants on premises presenting a pollution hazard (i.e.,
Apartment House, Office Complex, Fabricating Plants, or similar facilities
where ground seepage of pollution but not toxic materials may occur).
DCVA
10. Other Cross-Connection Hazards
1. AIR CONDITIONING COOLING TOWERS: A potable water inlet shall have an AG
separation of twice the inside diameter of the inlet or a minimum of two-inches above
the flood level.
2. ASPIRATORS AND EJECTORS: Shall have an AG or PVB, depending upon the
degree of hazard, on the faucet from which these devices are attached to or operated from.
3. BOOSTER PUMPS: All booster pumps shall be provided with a low pressure cut-off
unless other acceptable provisions are made to prevent the creation of low or negative
pressures in the piping system.
4. EXTERMINATING COMPANIES: All tanks, tank trucks, and spraying apparatus used
to convey pesticides in an exterminating process are required to use only designatedprotected potable water fill locations. Filling with potable water at unspecified locations or
private residences is prohibited. All filling locations will consist of over-head piping
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arrangements with correctly installed pressure vacuum breakers. If for any reason an
overhead piping arrangement cannot be used, a reduced pressure zone backflow
preventer must be installed on the fill line. All filling locations must be approved by Martin
County Utilities.
5. FIXTURE INLETS OR VALVED OUTLETS: Hose attachments, which may constitute a
cross-connection, shall be protected by the proper approved vacuum breaker installed at
least six-inches above the highest point of usage and located on the discharge side of the
last valve.
6. MISCELLANEOUS USES OF WATER FROM FIRE HYDRANTS: the operation of fire
hydrants by anyone other than authorized personnel is prohibited. The Utilities Department
may permit the use of water from a fire hydrant for construction or other purposes provided
the applicant shall properly apply for, and adhere to the backflow requirements on the
hydrant permit.
7. PORTABLE SPRAY AND CLEANING EQUIPMENT: Any portable pressure spray or
cleaning units that have the capability of connecting to any potable water supply and do not
contain a built-in approved air gap, should be fitted with a reduced pressure backflow
device.
8. PRIVATE WELLS: Shall not be inter-connected to a public water supply unless the
public supply is protected by an RPBA at the service connection, and approval is given by
Martin County Utilities.
9. VACUUM BREAKERS: Vacuum relief valves designed to prevent collapse or implosion
of a steam-heated pressure vessel when being cooled are not acceptable devices for
protection against backflow in potable water supply lines.
Note: Any device, equipment, or situation not covered by this cross-connection policy,
which may constitute a potential public health hazard, will be examined for appropriate
treatment by Martin County Utilities, or its authorized agent. Single check valves will not be
accepted as a means to protect the potability of drinking water and therefore may only be
used to prevent backflow which would affect the functioning of a plumbing system such as
to prevent recirculation of potable hot water. Where single check valves are improperly
used, they will be required to be replaced by an appropriate approved backflow prevention
assembly.
11. Testing of Backflow Preventers
It shall be the duty of the customer-user at any premises where reduced pressure backflow
prevention assemblies (RPBA), double check valve assemblies (DCVA), and pressure
vacuum breakers (PVB) and residential dual check valve assemblies (RDCA) are installed
to have thorough inspections and operational tests made at least once a year or more
often in those instances where inspections indicate a need. These inspections and tests
shall be at the expense of the water customer/user and be performed by a certified
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technician. The water supplier will notify the customer/user when tests are required and
supply the necessary test forms and instructions. These forms will be completed and
returned to the water supplier by the date indicated.
All backflow prevention assemblies with test cocks are required to be tested with a
minimum frequency of once per year. Testing requires a water shutdown usually lasting
five (5) to twenty (20) minutes. For facilities that require an uninterrupted supply of water,
and when it is not possible to provide water service from two (2) separate meters,
provisions shall be made for a “parallel installation” of backflow prevention assemblies.
Muti-story buildings which have a number of flushometer toilets shall be equipped with
parallel assemblies. Experience has shown if the water supply is shut off to this type of
building flushometers may have to be manually reset.
During testing one (1) assembly is left on while the other is being tested. Usually the two
(2) assemblies are sized one (1) assembly size smaller than the service line, e.g. one (1) 2inch device for two (2) 1-1/2 inch assemblies, one (1) 8-inch assembly for two (2) 6-inch
assemblies.
Martin County Utilities will not accept any unprotected bypass around a backflow preventer
when the assembly is in need of testing, repair or replacement.
12. Penalties for Non-Compliance
Termination of service: A written notification detailing all cross-connections found during
the inspection will be sent to the owner or authorized agent of the owner of the building or
premises, stating that corrections must be made and setting a reasonable time for
compliance. Upon failure of the owner or authorized agent of the owner of the building or
premises to have the defect(s) corrected within the specified time, the water supplier shall
cause the water service to the building or premises to be terminated. The water supplier
shall cause discontinuance of water service if a required backflow prevention assembly has
been bypassed or failed to be tested and properly maintained as required by this policy
statement. The water supplier shall also cause discontinuance of water service if an airgap separation system is compromised.
13. Retrofitting Existing Facilities
All premises of the type where cross-connections are suspect, may be surveyed by Martin
County Utilities to determine if a detailed inspection will be required. The customer shall be
notified in writing thirty (30) days in advance to secure an appointment for inspection of the
premises. The customer or his authorized representative may accompany the inspector
during the tour of the premises.
An inspection form will be completed by the inspector. The customer shall be made aware
of any corrective measures needed. All official letters of notification shall be sent to the
customer indicating what corrective measures must be taken. Upon conformance of the
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requirements in the notification letter, the customer shall immediately notify Martin County
Utilities to schedule a date of reinspection.
All existing facilities, which qualify as cross-connection risks will be retrofitted with backflow
prevention devices, appropriate to their classification, on the customer’s side of the meter,
or point of service. Proof of proper operation of the assembly must be submitted to Martin
County Utilities with a statement signed by a recognized, certified tester.
In the event that the report is not received within ninety (90) days of notification, service will
be immediately discontinued unless a schedule of compliance has been submitted to, and
approved by Martin County Utilities.
The customer will be responsible for any and all applicable fees, charges, or other costs
associated with retrofitting. The customer will be responsible for the annual, or more
frequent, retesting, maintenance, repair or replacement of the assembly. The requirement
for more frequent testing will be determined on a case by case basis by Martin County
Utilities, primarily, upon the degree of hazard. Any work done to, or testing of, the
assembly shall be reported to Martin County Utilities within seven (7) days of the incident.
14. Reclaimed Water
This is a summary of the important facts concerning the use of Reclaimed Water for
irrigation within Martin County Utilities Service area. The information contained in this
document is based on County Ordinances and official polices regarding the availability and
use of reclaimed water. More specific and technical information can be obtained by direct
reference to Ordinance # 276, and Chapter 62-610 F.A.C., Reuse of Reclaimed Water and
Land Application.
What is Reclaimed Water?
It is sparkling, disinfected water that meets all requirements as described Chapter 62-610
Part III, F.A.C. for irrigation to areas that are intended to be accessible to the public. It has
been reclaimed from wastewater that has received advanced tertiary treatment and highlevel disinfection. Reclaimed water can be used safely for irrigation and decorative
purposes in areas open to public access and for residential and commercial irrigation.
Reclaimed water has been successfully used in neighboring areas for golf courses and
lawn irrigation for many years.
Advantages of Reclaimed Water:
The use of Reclaimed water for irrigation is a proven technology that is safe and beneficial.
It has several advantages over irrigation with well and potable water. The use of
reclaimed water conserves potable water. This means less pumping of our precious
underground aquifer, which supplies potable water. Reclaimed water is cheaper to use
than potable water, and contains small amounts of nutrients, such as nitrogen and
phosphorus, which both lawns and plants need. There are also fewer irrigation restrictions
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for Reclaimed water during periods of drought.
Connection Requirements:
Once Reclaimed water service for irrigation is made available to an area, the use of
potable water for irrigation will be curtailed to the maximum extent practicable, utility
customers in the area may be required to connect to the Reclaimed water for irrigation of
lawns and landscaping. Some wells will be permitted in areas where Reclaimed water is
available to provide an augmentation supply for the overall Martin County Utilities reuse
water system. Residents will be responsible for connection to the County provided service
valves. Once the reuse water line is connected, the county will perform an inspection for
cross connection protection.
Connection Reclaimed Water Procedure:
Individual Reclaimed water services are installed where Reclaimed water mains and
capacity are available. There will be a purple box, with a connection valve, adjacent to the
property line. Individual users may connect reuse water only to an irrigation sprinkler
system. Only the county may use the valves located in the meter box at the customer’s
property line. Therefore, each user will be required to install a separate control box to
regulate their irrigation cycles. All installations and operation of Reclaimed water systems
shall be in accordance with Chapter 62-610 F.A.C.
Restriction on the use of Reclaimed Water:
Reclaimed water is safe for irrigation and other ornamental use, but is not safe for drinking.
Certain safeguards are required in order to reduce the possibility of accidental drinking of
Reclaimed water. No cross-connection or inter-connection is permitted between
Reclaimed water lines and potable water lines. Aboveground spigots and faucets may not
be connected to the Reclaimed water system. Reclaimed water will not be piped into, or
used inside, a structure. The County may inspect any property to insure no crossconnection exists. In the event a cross-connection is found to exist, the user will be
disconnected from the Reclaimed water system until the cross-connection violation is
corrected.
15. Review and Update
Martin County Utilities will on an annual basis review, and, if necessary, update, the crossconnection control policy to meet current, local, state and federal standards.
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SECTION XVI - APPROVED PRODUCT LIST
A. Water
1. FIRE HYDRANTS All components shall comply with the “American Made“
requirement as identified by A.R.R.A of 2009.
1. Mueller Super Centurion 250
2. American-Darling 5 ¼” B84B-5
3. Clow Medallion
2. AIR RELEASE VALVES (1-inch inlet)
1. Valmatic V.M. 38
2. Empire 929-3
3. Crispin #PL10
4. ARI S050 and D040
3. RESILIENT WEDGE GATE VALVES 4"- 20" All components shall comply with
the “American Made“ requirement as identified by A.R.R.A of 2009.
1. Mueller #A2360 (4”-12”)/A 2361 (14”-20”)
2. American Flow Control Series 2500
3. Clow #F6100
4. GATE VALVES 20" AND LARGER All components shall comply with the
“American Made“ requirement as identified by A.R.R.A of 2009.
1. Mueller A2361
2. American Flow Control Series 2500
5. TAPPING VALVES All components shall comply with the “American Made“
requirement as identified by A.R.R.A of 2009.
1. American Flow Control Series 2500
2. Mueller # T 2360/T 2361
3. Clow F-6100 Series
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6. TAPPING SLEEVE - # 304 STAINLESS STEEL WITH STAINLESS STEEL BOLTS
1. JCM #452 for HDPE / JCM#432 for all other pipe material
2. Smith/Blair #663 for all pipe material other than HDPE
3. Ford FAST for all pipe material including HDPE
4. Mueller H 304 for all pipe material other than HDPE
5. Romac SST-H for HDPE / Romac SST for all other pipe material
6. Total Piping Solutions Triple Tap for all pipe material including HDPE
7. DUAL CHECK VALVES (RESIDENTIAL) All components shall comply with the
“American Made“ requirement as identified by A.R.R.A of 2009.
1. Mueller 5/8 x 3/4 x 3/4
H14242 - 5/8" service
H14242 - 1" service
2. Ford
HHS531-323- 5/8" service
HHS531-344- 1" service
8. MECHANICAL JOINT AND FLANGED FITTINGS (AWWA, ANSI)
CEMENT LINED
1. Union Tyler McWane
2. U.S. pipe
9. MECHANICAL RESTRAINTS All components shall comply with the
“American Made“ requirement as identified by A.R.R.A of 2009.
A. Mechanical Joint
1. Ebaa Iron - Meg-A-Lug©
2. Uniflange – Ford
B. Self Restraining Gaskets for Push On Ductile Iron Pipe (DIP)
1. U.S. Pipe - AField Lock©
2. American - AFast Grip©
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10. METER VALVES (curb stops) All components shall comply with the
“American Made“ requirement as identified by A.R.R.A of 2009.
1. Ford
BA43-342WG - 5/8" service
BA43-444WG - 1" service
BFA43-777WG - 1-1/2" & 2" service
UVB43-42WG - Double 5/8" service
2. Mueller
B-24258 - 5/8" service
B-24258 - 1" service
B-24276 - for 1-1/2" & 2" service
+ Double Service H15363-05
3. McDonald
4602BT – 5/8” service
4602BT – 1” service
4602BT – 11/2” & 2” service
09UTBW – Double 5/8” service
11. CORPORATIONS
1. Ford
1" FB1000G
2" FB1100G
2. Mueller
1" B-25008
2" B-25028
3. McDonald 1” 4701BT
2” 4704BT
12. SERVICE SADDLES (STAINLESS STEEL WIDE BAND SADDLES ONLY WITH
STAINLESS STEEL BOLTS)
1. Smith-Blair #372-1 for HDPE / #372 for all other pipe material
2. Romac #305-H or 306-H for HDPE / #305 or 306 for all other pipe material
3. JCM #438 for HDPE / #502 for all other pipe material
4. Total Piping Solutions Series T3 for all pipe material including HDPE
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13. METERS – DISPLACEMENT TYPE, MAGNETIC DRIVE – 5/8” – 1”
1. Badger 5/8” model # 25 w/ Itron 100W Endpoint
2. Badger 1”-model #55 w/ Itron 100W Endpoint
14. METERS – DISPLACEMENT TYPE – 1 ½” AND LARGER;
1. 1 ½” Badger model # 120 w/ Itron 100W Endpoint
2. 2” Badger model # 170 w/ Itron 100W Endpoint
15. METER STRAINERS - 2" AND LARGER METERS
1. Badger
16. METERS 3” AND LARGER/ IRRIGATION
1. Mueller Systems / Hersey MVR
2. Neptune- HP
3. Sensus, OMNI T2
17. METERS 3” AND LARGER/ COMPOUND
1. Badger with Itron 100W endpoint
18. FIRE SERVICE METERS
1. Neptune Protectus III
2. Badger
19. BOXES/VAULTS - Including Lids and/or Covers
1. CDR
2. Quazite-composolite
Dimensions of Boxes/Vaults shall be as follows:
Valve Box Type
Top Dimensions
Bottom Dimensions
Single
11” x 18”
27” x 17”
Double
15” x 17”
27” x 24”
Coffin (2”)
30” x 17”
39” x 26”
20. DEAD END FLUSHING HYDRANT
1. Aquarius One-O-One
2. Water Plus
3. Gil Industries
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Height
12.5”
12.5”
12”
21. VACUUM BREAKER ( PUB )
1.
2.
3.
4.
5.
Ames A 200 (¾” to 2”)
Watts 008 PCQT (¾” to 1”)
Wilkins 720-A (½” to 2”)
Febco 765,767 (½” to 2”)
Apollo PVB4A (1/2” to 2”)
22. REDUCED PRESSURE BACKFLOW PREVENTERS (¾”,1’, 1 ½”,& 2”)
1.
2.
3.
4.
5.
6.
Ames 400B
Watts 009,909,919,& 994
Wilkins 975 XL
Febco 825Y
Apollo RPLF4A – Lead Free
A.R.I. RP-500
23. REDUCE PRESSURE BACKFLOW PREVENTERS (4”, 6”, 8”, & 10”)
1.
2.
3.
4.
5.
Ames 4000 SS
Watts 957, 994, & 909
Wilkins 300AR, 375
Febco 825 YD
Apollo RPLF4A (2-1/2” to 12”) - Lead Free
24. DOUBLE DETECTORS
1. Ames Series 3000SS
2. Apollo DCDALF4A (2-1/2” to 12”) – Lead Free
25. LOCATION BALL
1. 3M, EMS 4” Ball Marker, Item #1403-XR : color blue
2. Omni Marker Ball, Model #161 : color blue
26. LOCATE WIRE (DIRECTIONAL DRILL CONSTRUCTION)
1. Copperhead Directional Drill Wire (#12 AWG) # 1245B-EHS
27. TRACER BOX
1. Copperhead SnakePit Magnetized Tracer Box with blue top (Specific box
depends on location)
128
28. VALVE BOX
1. Tyler Series 6850 w/ No. 58 and 59 extensions
2. Or Equal
29. VALVE BOX LIDS
1. Bingham & Taylor Round Drop-In Lid with 4” Skirt (locations in pavement)
2. Tyler Union 5 ¼” lid (non-pavement locations)
30. WATER SERVICE TUBING
1. Endopure by Endot Industries
2. Or Equal
31. FIRE HYDRANT OUT OF SERVICE TAG
1. Joseph G. Pollard
2. Or Equal
32. PAINTING SYSTEM : ABOVE GROUND PIPING AND METERS
1. Primer:
TNEME-ALUMINUM MASTIC # 135 – TNEMEC
(3.0 to 5.0 mils DFT)
2. Intermediate Coat:
Series 66 Epoxoline – TNEMEC
Hi-Build Epoxy
(4.0 to 6.0 mils DFT)
3. Finish Coat:
Series 73 Endura-Shield III – TENEMEC
(2.0 to 3.0 mils DFT)
B. Reclaimed Water
1. RESILIENT SEAT GATE VALVES (4" - 20") All components shall comply with
the “American Made“ requirement as identified by A.R.R.A of 2009.
1. Mueller A2360 (4”-12”)/ A2361 (14”- 20”)
2. American Flow Control Series 2500
3. Clow F-6100
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2. RESILIENT WEDGE TAPPING VALVES All components shall comply with the
“American Made“ requirement as identified by A.R.R.A of 2009.
1. American Flow Control Series 2500
2. Mueller # T2360/T2361
3. Clow F-6100 Series
4. Waterous
3. AIR RELEASE VALVES (2" inlet)
1. ARI – D025
2. Val-Matic, model # 102
4. TAPPING SLEEVE - #304 STAINLESS STEEL WITH #304
STAINLESS STEEL BOLTS
1. JCM #452 for HDPE / JCM#432 for all other pipe material
2. Smith/Blair (Rockwell) #663 for all pipe material other than HDPE
3. Ford FAST for all pipe material including HDPE
4. Mueller H304 for all pipe material other than HDPE
5. Romac SS-H for HDPE / Romac SST for all other pipe material
6. Total Piping Solutions Triple Tap for all pipe material including HDPE
5. CHECK VALVES FOR RECLAIMED WATER
1. M & H Style #159-02
2. Mueller #2600-6-01
3. American "50" Line with Weight & Lever
4. Clow F 5345
6. MECHANICAL JOINT AND FLANGED FITTINGS (AWWA, ANSI)
1. U.S. pipe
2. Union Foundry (McWane)
7. MECHANICAL RESTRAINTS All components shall comply with the
“American Made“ requirement as identified by A.R.R.A of 2009.
1. Meg-A-Lug
2. Uniflange - Manufactured in the US
130
8. SERVICE SADDLES (STAINLESS STEEL WIDE BAND SADDLES ONLY WITH
STAINLESS STEEL BOLTS)
1.
2.
3.
4.
Smith-Blair #372-1 for HDPE/ #372 for all other pipe material
Romac # 305-H or 306-H for HDPE / # 305 or 306 for all other pipe material
JCM #438 for HDPE / #502 for all other pipe material
Total Piping Solutions Series T3 for all pipe material including HDPE
9. METERS
1. Neptune High Performance Turbine Meter
2. SENSUS Omni T2
10. LOCATION BALL
1. 3M, EMS 4” Ball Marker, Item # 1408-XR : color purple
11. LOCATE WIRE (DIRECTIONAL DRILL CONSTRUCTION)
1. Copperhead Directional Drill Wire (#12AWG) # 1245P-EHS
12. TRACER BOX
1. Copperhead SnakePit Magnetized Tracer Box with purple top (Specific box
depends on location)
13. VALVE BOX
1. Tyler Series 6850 w/ No. 58 and 59 extensions
2. Or Equal
14. VALVE BOX LIDS
1. Bingham & Taylor Round Drop-In Lid with 4” Skirt (locations in pavement)
2. Tyler Union 5 ¼” lid (non-pavement locations)
15. SURFACE AERATOR
1. Kasco display aerators
2. Or Equal
16. DIFFUSED AERATOR
1. EDI flexible membranes
2. Or Equal
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17. LAKE LEVEL DETECTOR
1. Blue Ribbon Industrial Components Corporations Submersible level sensor,
Model BC001 with Surge Suppressor BCP3000 (including lifetime warranty).
Indicator – Red Lion Model CUB4LP.
18. CONTROL VALVE WITH MOTOR ACTUATOR
1. KTM Single V Control Ball Valve by Tyco Flow Control. Actuator: Auma Type
SA muti-turn or Type SG quarter-turn approved for wastewater applications
19.
PRESSURE TRANSMITTER
1. Blue Ribbon BR4111 Pressure Transmitter with BCP3000 surge suppressor
(including lifetime warranty)
2. Rosemount 3051 Gauge Pressure Transmitter
20. RATE/TOTAL DISPLAY
1. Red Lion PAX2 with Modbus Card
21.
PAINTING SYSTEM: ABOVE GROUND PIPING AND METERS
1. Primer:
TNEME-ALUMINUM MASTIC # 135 – TNEMEC
(3.0 to 5.0 mils DFT)
2. Intermediate Coat:
Series 66 Epoxoline – TNEMEC
Hi-Build Epoxy
(4.0 to 6.0 mils DFT)
3. Finish Coat:
Series 73 Endura-Shield III – TENEMEC
(2.0 to 3.0 mils DFT)
22. WETWELL & VAULT COATING
1. Bitumastic - 2 coats inside and outside as heavy bitumastic. 1st coat to be red
nd
and 2 coat to be black.
132
C. Wastewater
1. RESILIENT WEDGE GATE VALVES (4" - 20") All components shall comply
with the “American Made“ requirement as identified by A.R.R.A of 2009.
1. Mueller A2360 (4”-12”)/ A2361 (4”-20”)
2. American Flow Control Series 2500
3. Clow F-6100
2. RESILIENT WEDGE TAPPING VALVES ) All components shall comply with
the “American Made“ requirement as identified by A.R.R.A of 2009.
1. Ames Valve
2. Mueller T 2360/T2361
3. American Flow Control, Series 2500
3. AIR RELEASE VALVES (2" inlet)
1. ARI – D025
4. TAPPING SLEEVE - #304 STAINLESS STEEL WITH #304
STAINLESS STEEL BOLTS
1. JCM #452 for HDPE / JCM#432 for all other pipe material
2. Smith/Blair (Rockwell) #663 for all pipe material other than HDPE
3. Ford FAST for all pipe material including HDPE
4. Mueller H 304 for all pipe material other than HDPE
5. Romac SST-H for HDPE / Romac SST for all other pipe material
6. Total Piping Solutions Triple Tap for all pipe material including HDPE
5. CHECK VALVES FOR WASTEWATER
1. M & H Style #159-02
2. Mueller #2600-6-01
3. American "50" Line with Weight & Lever Series 600
4. Clow F 5345
5. Ferguseon # PFX31
6. MECHANICAL JOINT AND FLANGED FITTINGS (AWWA, ANSI)
1. U.S. pipe
2. Union Foundry (McWane)
133
7. MECHANICAL RESTRAINTS) All components shall comply with the
“American Made“ requirement as identified by A.R.R.A of 2009.
1. Meg-A-Lug
2. Uniflange - Manufactured in the US
8. SERVICE SADDLES (STAINLESS STEEL WIDE BAND SADDLES ONLY WITH
STAINLESS STEEL BOLTS)
1. Smith-Blair #372- for HDPE / #372 for all other pipe material
2. Romac # 305-H or 306-H for HDPE / #305 or 306 for all other material
3. JCM #438 for HDPE / #502 for all other pipe material
4. Total Piping Solutions Series T3 for all pipe material including HDPE
9. LOCATION BALL
1. 3M, EMS 4” Ball Marker, Item # 1404-EX: color green
2. Omni Marker Ball, Model #162: color green
10. LOCATE WIRE (DIRECTIONAL DRILL CONSTRUCTION)
1. Copperhead Directional Drill Wire (#12AWG) #1245G-EHS
11. TRACER BOX
1. Copperhead SnakePit Magnetized Tracer Box with green top (Specific box
depends on location)
12. VALVE BOX
1. Tyler Series 6850 w/ No. 58 and 59 extensions
2. Or Equal
13. VALVE BOX LIDS
1. Bingham & Taylor Round Drop-In Lid with 4” Skirt (locations is pavement)
2. Tyler Union 5 ¼” Lids (non-pavement locations)
14. MANHOLE COVER (H-20 traffic load bearing)
1. U.S. Foundry Model # 420-C
2. Vulcan Foundry Model # V-101
134
15. MANHOLE COATINGS
1. Standard manhole (interior and exterior)– 2 coats water base epoxy [PRO TECH
EW-1 or equal] (20 mils red, 20 mils black) minimum of 40 mils total.
2. Force main entering manhole, Drop manhole & Terminal manhole (Interior
Coatings, exterior same as # 1 above)
1. Rezclad E-125S AR (minimum 120 mils)
2. SewperCoat (minimum ½-inch)
3. IET Systems Coating, primary coat shall be 5 mil,
minimum, intermediate coat shall be 50 mil coat minimum,
and finish coat shall be 5 mil minimum.
4. REFRATTA HAC 100 (minimum ½”)
16. PAINTING SYSTEM: ABOVE GROUND PIPING
1. Primer:
TNEME-ALUMINUM MASTIC # 135 – TNEMEC
(3.0 to 5.0 mils DFT)
2. Intermediate Coat:
Series 66 Epoxoline – TNEMEC
Hi-Build Epoxy
(4.0 to 6.0 mils DFT)
3. Finish Coat:
Series 73 Endura-Shield III – TENEMEC
(2.0 to 3.0 mils DFT)
D. Pump Stations
1. SUBMERSIBLE SEWAGE PUMPS “TYPE A”
1. Flygt Pumps
2. ABS Pumps
3. Barnes Pumps
2. SANITARY SEWER PUMP STATION “TYPE B”
1.
2.
3.
4.
Milwaukee Pumps
Myers Pumps
Flygt Pumps
Barnes Pumps
135
3. HATCH SAFETY GRATE
1.
2.
Standard Hatch Safety Grate, U.S.F. Fabrication, Inc.
Or Equal
4. FLOAT SWITCHES
1.
2.
Anchor Scientific S30NO Roto Floats
Or Equal
5. VFDS
1.
Yaskawa
6. WIRE MARKERS
1.
2.
3.
Panduit
Brandy
Or Equal
7. CABLE TIES
1.
2.
3.
4.
5.
Panduit
Thomas & Betts
Heyco
Tyco
Or Equal
8. ADHESIVE BACK MOUNTS
1.
2.
Panduit – ABM25
Or Equal
9. STANDBY POWER PLUG AND RECEPTACLE
1.
2.
100 amp service, JRSB 1044, FR Receptacle
200 amp service, JRSB 2044, FR Receptacle
10. LIFT STATON COATING (INTERIOR)
1.
2.
3.
4.
Rezclad E-125S AR (minimum 120 mils)
Sewper Coat (minimum ½”)
IET Systems Coating (primary coat shall be 5 mils minimum, intermediate coat
shall be 50 mils minimum, and finish coat shall be 5 mils minimum)
REFRATTA HAC 100 (minimum ½”)
136
11. PAINTING SYSTEM: ABOVE GROUND PIPING
1.
2.
3.
Primer:
TNEME-ALUMINUM MASTIC # 135 – TNEMEC
(3.0 to 5.0 mils DFT)
Intermediate Coat:
Series 66 Epoxoline – TNEMEC
Hi-Build Epoxy
(4.0 to 6.0 mils DFT)
Finish Coat:
Series 73 Endura-Shield III – TENEMEC
(2.0 to 3.0 mils DFT)
137
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Abbrv.
Description
Manufacturer
Part Number
ENC
Enclosure
Hoffman or equal
AL
BATT
CCB
CR
CRCB
ECB
Alarm Light (Red Bulb)
Battery, 12V DC
Control Circuit Breaker
Convenience Recept, GFI Type
Convenience Recept, CB
Emergency Circuit Breaker
RAB
Power Sonic
Square D
Pass and Seymour
Square D
Square D
Custom, Nema 3R, 304SS w/
rainshield and 3 Pt. latch
RAB-VP100DG
PS-1270
QOU110
1595-I and Weatherproof Box
QOU115
Size as required
FA-FC
FX1, FX2
FX3
FU1-FU3
FU4-FU7
GFM1,2
GR
Fuse, Phase Monitor Power
Fuse, Transformer Primary
Fuse, Transformer Secondary
Fuse
Fuse
Motor Ground Fault Monitor
Generator Receptacle
Ferraz
Ferraz
Ferraz
Buss
Buss
Bender
Russell-Stoll
H
ISR1-3
LA
Horn
Intrinsically Safe Relays
Lightning Arrestor
Federal
Ingram Products
Ditek
MCB
MS1, MS2
Main Circuit Breaker
Motor Starters
Square D
Square D
PCB1,2
PDB
PL
PS1
PM
Pump Circuit Breaker
Power Distribution Block
Pilot Light, color as noted
Power Supply, 12 DC
Phase Monitor
Square D
Marathon
Square D
Astrodyne
Diversified
R1-R4
RB, RP, RS
RDC
RTUCB
SFM1, SFM2
SFR1, SFR2
SW1 - 3, SW5
SW4
TB
TD1
XF1
SC
Control Relay
Control Relay
Control Relay
RTU Circuit Breaker
Seal Fail Monitor
Control Relay, Seal Fail Relay
Switch
Alarm Silence Pushbutton
Terminal Blocks
Time Delay Relay
Transformer
Surge Capacitor
Omron
Omron
Omron
Square D
SSAC
Square D
Square D
Square D
Wago
SSAC
Square D
Square D
ATQR-1
ATQR-X (460 V) or ATQR-15 (230 V)
FNM15
GDB-1A
GDB-100Ma
RCM460/465 Series
JRS1044FR or JRS2044FR
(as required)
350-WB-120
ISR2-12V-100K
DTK-240-3CM or DTK-480-3CM
(as required)
Size as required
Class 8536 NEMA series,
Size as required
Size as required
1333555
Class 9001 Type SK
AD55-A
SLA-230-ASA or SUA-460-ASA
(as required)
MY2N-DC12V
MK2PS-AC120
MY2N-DC12V
QOU110
LC54BA
Class 8501 Type KP
Class 9001 Type SK
Class 9001 Type SK
280 Series
TRDU12D3
Class 9070 T1500-D1
6671-SDSA3650
NO EXCEPTIONS will be allowed as to manufacturer of Generator Receptacle, Breakers or Motor
Starters. Upon submittal and approval, substitution of other parts on an "As Equal" basis may be allowed
if they are directly interchangeable with parts specified. APPROVAL OF A SUBMITTED ITEM AS AN
"EQUAL" SHALL BE AT THE SOLE DISCRETION OF THE DEPARTMENT.
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REVISION
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Abbrv.
Description
Manufacturer
Part Number
ENC
Enclosure
Hoffman or equal
AL
BATT
CCB
CR
CRCB
ECB
Alarm Light (Red Bulb)
Battery, 12V DC
Control Circuit Breaker
Convenience Recept, GFI Type
Convenience Recept, CB
Emergency Circuit Breaker
RAB
Power Sonic
Square D
Pass and Seymour
Square D
Square D
Custom, Nema 3R, 304SS w/
rainshield and 3 Pt. latch
RAB-VP100DG
PS-1270
QOU110
1595-I and Weatherproof Box
QOU115
Size as required
FA-FC
FX1, FX2
FX3
FU1-FU3
FU4-FU7
GFM1,2
GR
Fuse, Phase Monitor Power
Fuse, Transformer Primary
Fuse, Transformer Secondary
Fuse
Fuse
Motor Ground Fault Monitor
Generator Receptacle
Ferraz
Ferraz
Ferraz
Buss
Buss
Bender
Russell-Stoll
H
ISR1-3
LA
Horn
Intrinsically Safe Relays
Lightning Arrestor
Federal
Ingram Products
Ditek
MCB
MS1, MS2
Main Circuit Breaker
Motor Starters
Square D
Yaskawa-iQ Pump
Controller Series
PCB1,2
PDB
PL
PS1
VM
Pump Circuit Breaker
Power Distribution Block
Pilot Light, color as noted
Power Supply, 12 DC
Voltage Monitor
Square D
Marathon
Square D
Astrodyne
Diversified
R1-R4
RB, RP, RS
RDC
RTUCB
SFM1, SFM2
SFR1, SFR2
SW1 - 3, SW5
SW4
TB
TD1
XF1
SC
Control Relay
Control Relay
Control Relay
RTU Circuit Breaker
Seal Fail Monitor
Control Relay, Seal Fail Relay
Switch
Alarm Silence Pushbutton
Terminal Blocks
Time Delay Relay
Transformer
Surge Capacitor
Omron
Omron
Omron
Square D
SSAC
Square D
Square D
Square D
Wago
SSAC
Square D
Square D
ATQR-1
ATQR-15 (230 V)
FNM15
GDB-1A
GDB-100Ma
RCM460/465 Series
JRS1044FR or JRS2044FR
(as required)
350-WB-120
ISR2-12V-100K
DTK-240-3CM
(as required)
Size as required
Size as required
Size as required
1333555
Class 9001 Type SK
AD55-A
VBA-120-ALA
(as required)
MY2N-DC12V
MK2PS-AC120
MY2N-DC12V
QOU110
LC54BA
Class 8501 Type KP
Class 9001 Type SK
Class 9001 Type SK
280 Series
TRDU12D3
Class 9070 T1500-D1
6671-SDSA3650
NO EXCEPTIONS will be allowed as to manufacturer of Generator Receptacle, Breakers or Motor
Starters. Upon submittal and approval, substitution of other parts on an "As Equal" basis may be allowed
if they are directly interchangeable with parts specified. APPROVAL OF A SUBMITTED ITEM AS AN
"EQUAL" SHALL BE AT THE SOLE DISCRETION OF THE DEPARTMENT.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
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XYLEM / GODWIN CD-103M FOUR INCH SOUND ATTENUATED
FIXED- MOUNTED EMERGENCY BACKUP PUMP
PART ONE - GENERAL DESCRIPTION
PART TWO - PRODUCTS
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PART THREE - EXECUTION
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ITEM
QUANTITY
MANUFACTURER
MODEL
PART NUMBER
ENCLOSURE
1
MODEM
ANTENNA
ANTENNA
MOUNT & CABLE
1
1
Sierra Wireless
Laird
GX450
Phantom
1102326
TRA6927M3NWN-001
1
PCTEL
MAXRAD
MLF-12-204-S1-A
RTU SYSTEM
Required Options
1
1
1
1
1
1
1
1
2
1
Motorola
Motorola
Motorola
Motorola
Motorola
Motorola
Motorola
Motorola
Motorola
Motorola
ACE3600
F7509
V103
V214
V245
V260
V261
V114
V448
V20
FHN6895
RADIO BRACKET
24"H x 20"W x 12"D Stainless Steel, Painted White, 3 point
locking hatch, drip shield, document holder, door brace
ACE3600 Basic Model no Radio
3 I/O Slots Frame
Medium metal chassis
Mixed I/O Module
24V Plug in power supply for IO modules
AC Power Supply
6.5 Ah backup battery
CPU3680
Slot Filler
XTL Radio Bracket
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
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PUMP # 1
PUMP # 2
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DBL. STRAP
SADDLE
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VALVE
OPEN
CLOSE
FLOW
LEVEL
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Used for Irrigation
T
E
RI
S TA
DA
IN
RT
COU
"DO NOT DRINK"
Y OF M A
NT
OF F LO
A Water Conscious Community
"DO NOT SWIM"
Y OF M A
NT
T
E
RI
S TA
DA
IN
RT
COU
"DO NOT DRINK"
OF F LO
A Water Conscious Community
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TYPICAL SINGLE
RECLAIMED SERVICE
12"
MAX.
(TYP)
RECLAIMED
WATER METER (typ)
TYPICAL DOUBLE
RECLAIMED SERVICE
CASING
4'
4'
12"
MAX.
(TYP)
RECLAIMED
WATER MAIN
METER ASSEMBLY
POLYTUBING
RECLAIMED WATER MAIN
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CLOSE
FLOW
VALVE
OPEN
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MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
MARTIN COUNTY CONSTRUCTION STANDARDS & DETAILS
REVISION
DWG No.
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