Tag Archives: closure

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 sources of chemicals of concern.

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Soil Vapor Extraction and Air Sparge Operation, California Refinery

A global oil and gas corporation commissioned the operation and maintenance of a soil and groundwater remediation system designed an active California refinery. Continue reading

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Closure Plans for Contaminated Sites and Regulatory Closure Negotiations

Introduction Contaminated sites undergoing remediation are managed with cleanup goals that are driven by guidelines and regulations published by regulatory agencies.  Many regulators now require the collection of environmental data which may not be published in guidelines to assess closure. … Continue reading

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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 … Continue reading

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