EXPERTISE

GSI remediates contaminated soil and groundwater with the most cost-effective technology; provides engineering and design expertise for the corrective action process; and minimizes the scope and cost of corrective action by integrating RBCA and RNA into remediation designs.

REPRESENTATIVE EXPERIENCE

DNAPL Recovery: Designed and installed an innovative DNAPL recoverability test system at a Texas Gulf Coast Superfund Site. Based on test results, installed 25-well groundwater/DNAPL recovery system.

Groundwater Recovery: Designed, installed, and operated a 6-well groundwater recovery/treatment system for containment of a 2000 ft chlorinated solvent plume at a manufacturing facility, Houston, Texas.

Bioslurping: Installed a 16-well multi-phase extraction "bioslurping" system, LNAPL separator, air stripper, and vapor oxidation system at a pipeline terminal in Louisiana.

Excavation: Excavated 30,000 cubic yards of contaminated soils at former steel fabrication plant to satisfy residential closure criteria and facilitate residential and retail development of a 40-acre tract in Houston, Texas.

Soil Vapor Extraction: Designed a large combined soil vapor extraction/ groundwater extraction system for a low yield water-bearing unit at a former surface impoundment in Greenville, Texas.

Caps/Barrier: Developed conceptual design for large barrier/cap system at Brio Superfund Site, Houston, Texas.

Excavation: Wrote closure plan, oversaw contractor selection, and supervised excavation of 80,000 cubic yards of waste and contaminated soil at former unpermitted waste disposal site in southeast Texas.

Hydraulic Control: Designed and installed a 9-well groundwater hydraulic control and LNAPL recovery system to prevent discharge of contaminant groundwater to adjacent bayou, chemical manufacturing facility, Texas.