Tag Archives: groundwater

Perchlorate Abatement Options | Water and Groundwater

Perchlorate is a known thyroid gland disruptor and its concentration is regulated in soil and groundwater. Read more about the water treatment options for perchlorate impacted groundwater. Continue reading

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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 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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Perchlorate Groundwater Investigation, Barstow, California


The Salton Sea, California
A Southern California regulatory agency suspected that illegal disposal of perchlorate had impacted the soil and groundwater of a residential property located in Barstow, California. A groundwater investigation project was conducted at a suspected source of perchlorate site, and extended 1.5 miles offsite. The groundwater investigation project fully delineated the extension of perchlorate impacted groundwater and identified remediation alternatives.

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About the Owner of this Site: Roberto Piñón, P.Eng., P.E.

Roberto Piñón, P. Eng., P.E. is a Senior Chemical Engineer and Project Manager with 17 years of experience working with environmental projects. Continue reading

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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 … Continue reading

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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 … Continue reading

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Remediation of Soil and Groundwater | Underground Storage Tanks in California

We have extensive experience remediating soil and groundwater sites impacted by underground storage tanks (UST), UST decommissioning, soil excavation, tank and soil disposal, groundwater monitoring programs, health risk assessment, and closure support. Tank and Contaminant Source Removal Tank extraction services … Continue reading

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Feasibility Study, Remediation of Oxygenate Impacted Groundwater, Retail Gas Station, California

Advanced Oxidation of MTBE
A gas station located in Southern California had contaminated the groundwater with oxygenates.  The client was in need to contain plume of MTBE and TBA, which was migrating to an environmentally sensitive area. A feasibility study evaluating nine remediation scenarios was conducted to identify the best remediation option. Continue reading

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Redesign and Troubleshooting of Remediation Systems | Los Angeles, California

Remediation of Gasoline Impacted Soil and Groundwater Two neighboring sites owned by the client were impacted with a plume of gasoline released by leaking underground storage tanks. To abate the problem, the client installed two groundwater treatment systems and a soil vapor extraction system. All systems were failing to operate or operated with substantial down-time. Continue reading

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