Category Archives: Groundwater Remediation
Dual-Phase Extraction (DPE) is a remediation technology for soils and groundwater impacted with volatile organic compounds (VOCs). This technology works by extracting soil vapor and groundwater from the subsurface at a high vacuum, then treating the vapors and water prior to discharge.
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.
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.
After a marine terminal was demolished, several site assessments revealed that soil and groundwater at the site were impacted 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.
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. Continue reading
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 several volatile organic compounds (VOCs). The advanced oxidation process is suitable for groundwater remediation with pump-and-treat, water treatment, and industrial wastewater treatment. Treatment with UV/Peroxide may offer technical advantages over ozone based treatment systems.
Perchlorate is a known thyroid gland disruptor and its concentration is regulated in soil and groundwater. We offer a broad range of professional services to investigate, delineate, and remediate perchlorate in soil and groundwater using proven technologies such as ion-exchange and anoxic filters. Continue reading
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
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
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