Tag: hexavalent
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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.
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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.
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Ion Exchange Systems for Removal of Metals and Inorganics
Description Ion Exchange is a process in which ions of a species are displaced from an insoluble exchange material (ion exchange resin) by ions of a different species in water. The removal of target ions is achieved through commercially available ion exchange resins that exchange target anions for chlorine (Cl-) or hydroxide ion (-OH), and…
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Biological Reduction of Selenium, Nitrates, Chromium, and Perchlorate
Description of the Biological Reduction Process Biological treatment is used in a wide range of water and wastewater treatment applications for the removal of biodegradable constituents. The biological treatment process can also be modified and used to reduce nitrates, oxides of selenium, hexavalent chrome, and perchlorate in water. The reduction of nitrates and perchlorate can…