Project Profiles

HOLLAND TUNNEL, HUDSON RIVER, NEW YORK

The Holland Tunnel project, located under the Hudson River, completed leak repairs at the duct inverts using GTI-1000 Injection Polymer Rubber Gel. Infiltration pathways at low points in the duct runs were sealed, including leaks tied to cracks, joints, and interface conditions along the invert. Repairs were performed using an injection grid with drilled ports and a controlled injection sequence to maintain continuity through the treatment zone. Coverage was verified through response between adjacent ports, then ports were sealed and the area was left clean and closed out.

FAR WEST - JACK OF TRADES, JACKSON HOLE, WYOMING

This project waterproofed a luxury cabin in Jackson Hole that was built in a creek bed below the natural water table, requiring a system that could withstand constant hydrostatic pressure. We installed GTS-600 beneath the slab to form a sealed mechanical bond against rising groundwater and used GTS-350 on the exterior walls to create a fully bonded barrier against direct moisture exposure. Together these systems form an integrated waterproofing envelope with strong adhesion and high puncture resistance that keeps the structure watertight in saturated conditions.

SFMTA CENTRAL SUBWAY STATIONS, SAN FRANCISCO, CALIFORNIA

The SFMTA project is one of San Francisco’s largest infrastructure projects and consists of new subway stations constructed as identical box structures, with twin bore TBM tunnels connecting into the stations. Our completed work areas included YBM, Chinatown, and Union Square Station (Station Only). GTS-350 and GTS-500 were installed using a top down construction method. In this case, GTS-500 was used as a shotcrete/blindside waterproofing system.

BART WSX, Fremont, California

The BART Warm Springs project is a $130 million construction contract that includes a mile-long subway beneath Fremont Central Park, an embankment for future BART trackways and two ventilation structures. Polymer Rubber Gel, GTS-350 (positive side) and GTS-500 (blind side) systems were specified for the entire subway box structure. This tunnel is constructed underneath Lake Elizabeth and is near the seismically active Hayward fault. Successfully completed in 2011.

Presidio Parkway, san FranCisco, California

The Presidio Parkway project was designed to improve the seismic, structural and traffic safety of the historic Doyle Drive route connecting San Francisco to the Golden Gate bridge.  The project will succeed in improving the roadway through the addition of new tunnels and more access points while improving views from within the National Historic Landmark District. Four separate tunnels were built to handle the traffic. Our GTS-350 and GTS-500 were used in the two phases of construction.

PNC Bank plaza, Pittsburgh, Pennsylvania

Restoration of a plaza deck with parking below.  Applied in around the clock shifts, the GTS-350 System and Poly-Rubber Gel, successfully restored PNC Bank World Headquarters in Pittsburgh on time, under budget and with minimal disruption to normal business activities. 

Leak Repair MBTA "Big Dig" Boston, Massachusetts

Poly-Rubber Gel was successfully applied at three separate sites to the positive side of 5 foot thick slurry walls to create a restorative waterproofing membrane to seal leaks. The first injection site included through wall injections in a utility bay room that was experiencing seeping leaks through the slurry wall and at the intersect of the soldier pile and slurry wall. Checking for counterflow, Poly-Rubber Gel was injected from the bottom of the wall to the top directly adjacent to a soldier pile to stop leaks

NOTABLE PROJECT LIST