Client:
Services: Concerns: | ABC Compounding, Inc., Morrow, Georgia
Soil/Groundwater Investigation HSRA Water Well Survey Water Well Closure/Corrective Action to avoid HSI NotificationCorrective Action System Design, Installation, O&M HSRA Notification Georgia Hazardous Sites Response Act Georgia Water Well Standards ActNo HSI Listing |
Scope of Services:
ABC Compounding operates an industrial cleaning chemical facility in the southern portion of the metropolitan Atlanta area. During a Phase I/Phase II ESA investigation, several VOCs were discovered in soil and groundwater in the vicinity of ABC Compounding’s former aboveground tank farm area. The releases consisted of chlorinated VOCs in concentrations as high as 50 ppm in groundwater and included 1,1-dichloroethene, methylene chloride, trichloroethene, 1,1,1 trichloroethane, and carbon tetrachloride. AEM subsequently prepared and submitted the required HSRA notification on behalf of ABC Compounding. Because of contaminant concentrations and the presence of water wells within the specified radii from the site, there was concern that the site would be placed on the HSI list.
AEM first conducted a water well survey for sites in the vicinity of the plant and then planned for well closure for the sites located within the critical HSRA distances. AEM then designed and installed a dual-phase vacuum extraction (DVE) system with vacuum-enhanced groundwater pumping for soil and groundwater remediation subsequent to releases from an AST tank farm at an industrial cleaning chemical facility. After installation, DVE system O&M was performed regularly, along with monitoring of the extracted groundwater and air from the DVE system.
The remediation successfully removed the source area of contamination and prevented down-gradient migration of the contaminant plume off site. The DVE system successfully reduced the soil concentrations to below laboratory detectable limits. The dissolved-phase concentrations of VOCs in groundwater, except 1,1-DCE at several limited areas, were reduced to levels near or below federal drinking water standards.
After the DVE remediation to remove the majority of the VOC contamination, AEM subsequently designed and implemented an accelerated bio-remediation approach to enhance the remediation of the limited groundwater areas containing elevated 1,1-dichloroethene. The design involved injecting a slurry containing Oxygen Release Compound (ORC) and sugar solution throughout the vertical saturated groundwater zone of the upper aquifer. Work for this phase of the project included evaluation of various biological, chemical, geologic, hydrogeologic, and geo-chemical parameters.
Ultimately, the water well closure and on-site remediation of soil and groundwater precluded the ABC Compounding facility from being placed on the HSI list.
AEM first conducted a water well survey for sites in the vicinity of the plant and then planned for well closure for the sites located within the critical HSRA distances. AEM then designed and installed a dual-phase vacuum extraction (DVE) system with vacuum-enhanced groundwater pumping for soil and groundwater remediation subsequent to releases from an AST tank farm at an industrial cleaning chemical facility. After installation, DVE system O&M was performed regularly, along with monitoring of the extracted groundwater and air from the DVE system.
The remediation successfully removed the source area of contamination and prevented down-gradient migration of the contaminant plume off site. The DVE system successfully reduced the soil concentrations to below laboratory detectable limits. The dissolved-phase concentrations of VOCs in groundwater, except 1,1-DCE at several limited areas, were reduced to levels near or below federal drinking water standards.
After the DVE remediation to remove the majority of the VOC contamination, AEM subsequently designed and implemented an accelerated bio-remediation approach to enhance the remediation of the limited groundwater areas containing elevated 1,1-dichloroethene. The design involved injecting a slurry containing Oxygen Release Compound (ORC) and sugar solution throughout the vertical saturated groundwater zone of the upper aquifer. Work for this phase of the project included evaluation of various biological, chemical, geologic, hydrogeologic, and geo-chemical parameters.
Ultimately, the water well closure and on-site remediation of soil and groundwater precluded the ABC Compounding facility from being placed on the HSI list.
