Category: Remediation
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Soil Vapor Extraction | Technology Description
Soil Vapor Extraction (SVE) is an in situ remediation technology designed to remediate soils impacted with volatile organic compounds (VOCs) including gasoline, and chloroethenes. This technology works by extracting soil vapor at a high vacuum using subsurface wells, then treating the soil vapor prior to discharge.
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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.
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Dual-Phase Extraction (DPE) | Technology Description
Dual-Phase Extraction (DPE) is a remediation technology used to remediate soils and groundwater affected with volatile organic compounds (VOCs). This technology works by extracting soil vapor and groundwater from the subsurface, then treating the vapors and water prior to discharge.
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Air Sparge | Technology Description
Air sparge is an in situ groundwater remediation technology were air is injected into the groundwater to increase dissolved oxygen. Air sparge is used to remediate impacted groundwater with volatile organic compounds (VOCs), most commonly gasoline range organics.
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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.
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Lubricant Oil Spill Response, South Gate, California
An emergency cleanup response was executed after 7,000 gallons of lubricant oil were released. The release occurred as a result of railroad tank car colliding with a road tanker. The release affected soils in the vicinity of the incident, and impacted a nearby storm drain.
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Remediation of a Former Marine Terminal, Southern California
After a marine terminal was demolished, several site assessments revealed that soil and groundwater at the site were affected with petroleum hydrocarbons and lead. An interim remedial action plan (IRAP), a remedial action plan (RAP), and a sampling and analysis plan (SAP) were prepared and implemented to protect harbor water, and remediate the site.
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Fixed-Price Guaranteed Remediation Project, Former Aerospace Site Impacted with VOCs, Southern California
A former aerospace manufacturing site was impacted with perchloroethylene (PCE) and trichloriethylene (TCE) in soil gas. The operation and maintenance of a soil vapor extraction (SVE) system was outsourced through closure.
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Groundwater Remediation using Air Sparge | Pilot Testing, Design, Construction, and Operation
Air sparge is an in situ groundwater remediation technology which uses vertical or horizontal wells to transfer a continuous or pulsed flow air into the groundwater. The purpose of air sparge system is to reduce the concentrations of volatile organic compounds (VOCs) in groundwater through enhanced volatilization, and mass transfer of VOCs and oxygen.
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Advanced Oxidation using Ultraviolet Light and Hydrogen Peroxide
Advanced oxidation systems using hydrogen peroxide (peroxide) and ultraviolet (UV) light are designed to inject hydrogen peroxide in controlled ratios to the water, then mixing the peroxide, and exposing the water and peroxide solution to UV radiation to form hydroxyl radicals (•OH). Peroxide and hydroxyl radicals are strong oxidizing agents capable of oxidizing 1,4-dioxane and…