Overview
The South Jersey Clothing Company (SJCC) and Garden State Cleaners (GSC) facilities manufactured military clothing and provided dry cleaning services from the 1940s to the 1990s, contaminating regional groundwater with the volatile organic compounds (VOCs) trichloroethene (TCE) and perchloroethylene (PCE). Under this project, HGL operates a groundwater treatment plant and extraction/injection systems; samples and analyzes soil, groundwater, surface water, air, and sediments; installs, monitors, and maintains monitoring, extraction, and injection wells; and provides public relations support.
The 550-gallon-per-minute groundwater treatment plant extracts VOC-contaminated groundwater from a network of 22 extraction wells. The VOCs are removed using both liquid- and vapor-phase granular-activated carbon, sulfuric acid pH adjustment, and sodium hypochlorite disinfection. The treated water is discharged to a network of 24 injection wells and an injection trench system upgradient of the groundwater treatment plant. Operations and maintenance activities performed by HGL’s licensed plant operators include routine monitoring, preventative and non-routine maintenance of groundwater treatment plant components; plant process and groundwater monitoring sampling; and maintenance of extraction and injection well systems to maximize contaminant removal and plant production.
| Project Highlights | |
|---|---|
| ✔ | Extracted, treated, and discharged 650 million gallons of groundwater, averaging 485 gallons per minute while operating at 96% on-stream efficiency. |
| ✔ | Reduced plant operations staffing by 50% through effective management of project resources. |
| ✔ | Completed a time-critical connection of a new extraction well before fall session began at a nearby elementary school. |
| ✔ | Earned New Jersey Department of Labor Safety Awards in 2013, 2014, and 2015; and National Safety Council Safety Awards in 2014, 2015, and 2016. |
