The QUINTEK Newsletter
The Leader in Environmentally Safe Cleaning Technology
Welcome to our QUINTEK Newsletter!
Vol. 2, Issue 1
Hall of Justice Renovation Los Angeles County
Original Architect:
Allied Architects Association Los Angeles, CA
Project team:
A. C. Martin Partners, Inc., Los Angeles, CA
Clark Construction. Irvine, California
Wiss, Janney, Elstner Associates, Inc
Levin & Associates Architects, Los Angeles, CA
Carrara Marble Co of America, City of Industry, CA
QUINTEK Certified Contractor:
Bielski Services - Anaheim, California
Photo Hall of Justice c. 1939 — Photo courtesy of LAPL
Carrara Marble Co of America, City of Industry, CA
It is since 1925 the Los Angeles County Hall of Justice, a downtown landmark, remains the
oldest surviving government building located on Temple Street, on what was once called
Pound Cake Hill. This Beaux-Arts building served as the home of the LA County Sherriff’s Department and the Coroner’s Office. The building was designed by Allied Architects Association a super design team consortium of 33 Los Angeles-based architects. Allied Architects
Association was founded in 1921 to provide the best expression of the art of architecture to
municipal, county, state, and national governments by professional architects at the least possible cost. Among the participating architects were Octavius Morgan, Edwin Bergstrom, David
C. Allison, Myron Hunt, Reginald Johnson, Elmer Grey, and J. J. Backus. AAALA’s design
was of bold classical details that matched on all four sides and presented an imposing presence in the Los Angeles Civic Center. The exterior of the building is clad almost entirely in
granite from the ground level, to the granite columns encircling the upper floors. The floors
above and below the colonnade contain terra cotta panels featuring bucrania (ox skulls) and
acanthus leaves while a terra cotta cornice caps the façades. The opulent grand lobby features Ionic marble columns and a gilded coffered ceiling. The facility continued consolidated
operations as the County’s Courts and County Jail until the 1994 Northridge Earthquakes
when the structure was damaged by seismic activity and was deemed unsound to occupy.
QUINTEK Corporation
501 Washington Street, Suite 4
Conshohocken, PA 19428
Voice: (800) 567-0053 (610) 940-1490
(800) 567-2841 (610) 940-4708
Hall of Justice, Los Angeles County, California
Photo by Bielski Services Anaheim CA.
Photo by Bielski Services Anaheim Ca.
After more than 20 years of abandonment the Los Angeles County Board of Supervisors
sought to reopen the building that once housed infamous criminals like “Bugsy” Siegel,
Robert Mitchum, Charles Manson and Sirhan Sirhan, and where the autopsies of Marilyn
Monroe and Robert Kennedy were conducted. The $234 million design-build contract was
awarded to the Clark Construction Company and A. C. Martin to rehabilitate and restore
the building to its former glory. This project was equal parts structural retrofit, historic restoration, and complete tenant improvement. Over
the course of the last three years, the project team
meticulously repaired and restored the Hall of Justice, delivering a modern, functional facility that retains all of its original grandeur. The building’s rehabilitation included extensive cleaning of the Sierra White Granite facades and the restoration of
the marble-clad grand lobby and loggia. Countless
hours of collaboration were spent with Clark Construction and its Design Team heads up by Carrara
Marble Company, the prime restoration contractor
Photo by Bielski Services Anaheim CA.
in an effort to restore the Hall of Justice exterior
façade to its former glory. The final specification resulted in the use of the environmentally
safe ROTEC VORTEX micro abrasive cleaning system. The granite and terra cotta have
been carefully and methodically cleaned and restored under the watchful eyes of the
Carrara Marble Company, and sub-contractor Bielski Services of Anaheim, CA both are
certified QUINTEK contractors that used
ROTEC VORTEX micro abrasive cleaning
system and QUINTEK
certified micro abrasive glass media M
1035 for spectacular
Photo by Bielski Services Anaheim CA.
Find additional information at http://www.clarkhallofjustice.com/
The High Bridge project New York N. Y.
A Bridge over the Harlem River
Project :The High Bridge and approaches located within Highbridge
Park, Manhattan and Highbridge Park, Bronx
Original Engineering Team: John B. Jervis and James Renwick, Jr.
Style: Roman aqueduct architecture
The Scope of Work to be Performed: A $ 61.7 million rehabilitation project funded by Mayor Bloomberg’s PlaNYC initiative
and Congressman Joe E. Serrano to restore and reopening
of the bridge for pedestrians and bicyclists using historic
preservation methods. Estimated opening 2015
Construction Manager: The New York City Department of Design
and Construction in partnership with Parks and Recreation
Design Team: Led by Lichtenstein Consulting Engineers, P.C.
General Contractor: Schiavone Construction Co., Secaucus NJ
Conservator: Jablonski Building Conservation, Inc. New York, NY
QUINTEK Certified Contractor: JMC Stone Company, Mineola NY
Completed in 1848 the High Bridge is part of the Old Croton Aqueduct, a 41 mile gravity system designed to replace privet wells
that could not supply the clean water needs of a rapidly growing
urban population of New York City. The High Bridge is listed on
the National Register of Historic Places. It a New York City and a
National Historic landmark. The bridge served NYC from 1842 until 1958 at it peak it carried about 100 million gallons of pure water
to the city. The bridge was the result of architectural and engineering innovations developed to connect the Old Croton Aqueduct system from the Croton River in Westchester County to Manhattan NY. Designed on principles of Roman aqueduct architecture, the granite bridge is about 116 feet in height, with the peak
of its arches 100 feet above the Harlem River. The bridge is 1,450
feet long, measured from gatehouse to gatehouse, with a 1,200foot-long brick walkway. In 1864 larger water pipe and a walkway
were added. In 1928, after many years of calls for complete
demolition of the bridge, the city replaced five of the original 15
arches with a central steel span to ease the passage of large
ships up the Harlem River. The rest of the majestic stone arches
still stand today the majority on the Bronx side of the river.
High Bridge, High Bridge Water tower
High_Bridge_and_high_service_ works _%
High bridge original stone arches C.A. 1900
High Bridge with steel arches C.A. 1990
High Bridge before restoration
The High Bridge project New York N. Y.
A Bridge over the Harlem River
The High Bridge project involved: the repairing of
brick walkway deck, including supporting structural
arches and tie rods; the re-pointing and repairing of
stone masonry arches, repairing, strengthening, and
repainting of the steel arch; constructing new safety
fencing; restoring historic hand railings; constructing
new bicycle and ADA accessible ramps on brick
walkway decking; adding decorative lighting and
Photo courtesy of JMC Stone Co
cleaning of the stone arches. Jablonski Building Conservation was retained by the general contractor Schiavone Construction Co. and masonry
sub-contractor JMC Stone Company to assist with the development of appropriate methods
for cleaning the masonry at the High Bridge. There were three types of soiling present on
the masonry, heavy atmospheric
soiling, paint, and graffiti. A cleaning
test program was undertaken to determine the most effective and gentlest means for removing the soiling
from the historic granite. The testing
included, low pressure microTesting samples at the High Bridge . Photo courtesy of JMC Stone Co.
abrasives, chemical cleaners and
methods of paint removal. An 8X magnification field scope was used to detect any etching.
Etching is the scratching of softer minerals in the granite that may causes more light to be
reflect from the stone to make the stone appear lighter in color.
Etching can be caused by both low pressure micro-abrasive cleaners and chemical cleaners. Over 30 different test were performed
to determine the best course of action. Based on the results of the
testing, the size of the structure, its proximity to the river, possible
containment issues, and varying temperature conditions, it was
recommends that the QUINTEK ROTEC VORTEX cleaning system utilizing the M1035 180 Micron Glass Powder be utilized to
8x magnification after cleaning with ROTEC
VORTEX cleaning system no etching visible.
clean the High Bridge granite masonry.
Photo courtesy of JMC Stone Co.
cleaned the soiling at 40 psi without causing any measurable damage
to the granite. In addition to successfully removing general atmospheric soiling, the ROTEC VORTEX cleaning system was also proven
to successful remove paint and underlying graffiti from the north façade of the pier during the testing. The QUINTEK Corporation is
proud to work with the JMC Stone Corporation, a certified QUINTEK
company in the restoration of the National Register listed Historic
High Bridge that spans the Harlem River.
Photo of the ROTEC VORTEX mock-up
sample. Courtesy of JMC Stone Co.
Additional information at http://en.wikipedia.org/wiki/High Bridge %28New York City% 29#High Bridge Water Tower
QUINTEK’s Misting Cleaning System
A safe and effective way to clean masonry.
QUINTEK a leader in environmentally safe cleaning systems presents the new revised
Misting Cleaning System QMCS 100 a traditional stone cleaning method for the technical
era. Our Misting Cleaning Systems meet or exceed the most discerning specification requirements. The QMCS 100 creates a micro-fine mist of filtered potable water that can
cleans sensitive stone surfaces removing; grime, pollutants and many other types of water-soluble soiling by gently softening the layers of dirt that have accumulated over
time. Our articulating spray nozzles are securely mounted on a 5 foot spray bar ensuring
that the cleaning mist can be precise focused where it is needed with to avoiding over
saturation. Our system is the only system that is controllable in the ON as well as the
OFF cycles. The duration of both
cycles can be accurately controlled from 5 seconds to 10 minutes. The system also has a built
in filtration unit that will restrict
particles down to 5 micron in
size. Cleaning with the QMCS 100
Corcoran Art Gallery, Washington DC
is gentle, environmentally safe
Corcoran Art Gallery, Washington DC
after mist cleaning
before cleaning
and effective for use on historic
stonework and masonry.
The units feature:
Built in cyclic timer adjustable form 5 sec to 10 minute
Built in Micron Filtration
Conical spray nozzles
Whisper quire operation
UV-stable articulated nozzle hoses
Misting bars are constructed of non corrosive materials
Articulated nozzles hoses enable accurate positioning of
Standard length: 5 Feet (Maximum length per control timing
unit is 70 linear feet)
The QMCS 100 is extremely flexible and can be modified to fit
the needs of your project. The most common designs are the
ladder and the horizontal layout. This system is environmental
safe and uses no chemicals to clean the substrate.
The QUINTEK Newsletter
The Leader in Environmentally Safe Cleaning Technology
QUINTEK was proud to participate in the September 24, 2014 Seminar - CLEANING HISTORIC MASONRY - presented by the International Masonry Institute and the Association for Preservation Technology of Delaware Valley Chapter. As you can see from the photos
the presentations were well attended. We demonstrated our ROTEC
VORTEX Cleaning System and Misting Cleaning System. During the
demonstration we discussed how the ROTEC VORTEX Cleaning
System can efficiently, affectively, and safely remove pollutants from
the substrate without harm it. Helping restore historic structures to there former
glory. Attendees were given the opportunity
ask questions and inspect the material
cleaned using a 5x hand held jeweler’s
loupe. Special thanks to Roy Ingraffia of
International Masonry Institute and Association for Preservation
Technology, for his invitation.
Attendee using the 5x hand held Jewelers loop
QUINTEK Corporation is committed to providing cleaning technology
to preserve the building and living environment. We are ready to assist you with your project needs. We provide consultant services and
testing services for your projects.
Sample testing
Technical evaluation
Training Certification
Demonstrating the ROTEC VORTEX
cleaning system
All photos courtesy of QUINTEK Corp
Environmentally safe QUINTEK’s certified micro abrasive glass powder M 1035 and
dolomite powder D 5025 are safe to the environment and user.
Our media is environmentally friendly
no heavy metals
no toxic components
no potentially damaging soluble salts
not considered a carcinogen
 not listed by NTP, IARC or OSHA as a carcinogen
not reactive to; metals, organic materials or chlorates
Don’t be fooled by others that claim they are environmentally friendly read the MSDS
sheets! Our MSDS sheets are posted on www.QUINTEK.net.
Please follow us on the web at www.QUINTEK.net
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