Tag Archives: intrusion

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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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  Many regulators now require the collection of environmental data which may not be published in guidelines to assess closure.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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