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Tag Archives: TCE
Dual-Phase Extraction System: Permitting, Design, Construction, and Operation | Industrial Redevelopment Berkeley, CA
The soil and groundwater at a former industrial building located in Berkeley, California were affected with trichloroethene and gasoline. A dual-phase extraction system was permitted, designed, and constructed for site remediation. The site underwent remediation while the developer remodeled and repurposed nearly 500,000 square feet for commercial, retail, office, and light industrial uses.
Posted in All Posts, Groundwater Remediation, Projects, Remediation, Water Treatment
Tagged Design, Dual Phase Extraction, Groundwater Remediation, NPDES, PCE, TCE, VOC, VOCs
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Technical Assistance for CERCLA Sites
Technical support was provided to two groundwater operating units. The operating units are designed to remediate the groundwater impacted with VOCs at two CERCLA sites.
Posted in All Posts, Groundwater Remediation, Projects, Remediation
Tagged aerospace, Air Emissions, CERCLA, Compliance, EPA, GAC, LPGAC, Operation and Maintenance, PCE, site, Sites, Superfund, TCE, Technical Support, VOCs, VPGAC
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Environmental Services for the Aerospace Industry
Our project experience includes environmental engineering services for the aerospace industry which includes remediation of former aerospace sites that pre-date World War II (also called legacy sites), and several CERCLA sites located in Southern California. Continue reading
Posted in Clients
Tagged aerospace, chrome, emerging contaminants, hexavalent, NDMA, PCE, perchlorate, remediation, site, TCE
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Soil and Soil Gas Investigation, San Fernando Valley, California
When seven production wells operated by a Southern California water purveyor reported concentrations of hexavalent chromium and perchlorate above regulatory limits for drinking water, a multiagency effort was conducted to identify the sources.
Posted in All Posts, Investigation, Projects
Tagged 14-dioxane, aerospace, chrome, closure, dioxane, emerging contaminants, groundwater, hexavalent, intrusion, plan, sampling, soil, soil gas, TCE
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Closure Plans for Contaminated Sites and Regulatory Closure Negotiations
Closure plans are prepared to supplement work plans for contaminated sites when a property owner is interested in obtaining No Further Action letters from the lead regulatory agency. Closure plans provide a description of administrative and technical requirements and factors supporting closure, including cleanup goals based on indoor vapor intrusion pathways and groundwater intrusion pathways. Communicating closure strategy is effective for early regulatory approval.
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Posted in All Posts, Services
Tagged closure, extraction, intrusion, johnson-ettinger, PCE, plans, redevelopment, soil, SVE, TCE, vapor, VLEACH
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Site Closure Plan and Closure Strategy and Regulatory Support, Former Aerospace Site, Southern California
A soil vapor extraction system located at former aerospace site in Southern California had operated for a number of years. The client requested a strategy to obtain regulatory site closure. In response, a site closure plan was prepared outlining a schedule and a list of technical and administrative requirements to support site closure. The closure plan also listed methods and procedures to demonstrate that site-specific cleanup concentrations were protective of human health and groundwater.
Posted in All Posts, Projects, Remediation, Soil Remediation
Tagged closure, Contaminated, gas, Gasoline, Health, PCE, plan, retail, Risk, site, Sites, soil, Stations, Surveys, TCE, VOC, VOCs
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