Remediation: Active Military Base in Puerto Rico

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ORIN had the opportunity to travel to Ft. Buchanan near San Juan, Puerto Rico to conduct an Enhanced Reductive Dechlorination injection (ERD).  The project was designed to treat contaminated groundwater affected with chlorinated solvents.  A series of drilled injection wells and DPT injection points were utilized to deliver the electron donor, carbon substrate solution.  The […]

Remediation: A Successful Active Gas Station Implementation

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ORIN returns from central Nebraska having completed in-situ chemical oxidation project at an active gas station.  The objective of this project was to eliminate dissolved phase benzene, toluene, ethylbenzene, and xylene (BTEX) compounds.  Activated sodium persulfate combined with calcium peroxide was chosen as the right treatment chemistry.  Delivery of the treatment chemistry was performed by […]

Remediation: Another Successful Inject & Extract Project

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ORIN has completed work at a former gas station in western Nebraska utilizing in-situ chemical oxidation with vacuum extraction.  A dual phase extraction system was previously in place, but was not sufficient in meeting the site clean-up goals.  The contaminants of concern at this site were benzene, toluene, ethylbenzene, and xylene (BTEX).  The treatment chemistry […]

Remediation: Catalyzed Hydrogen Peroxide Injection

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ORIN had just traveled to southern Alabama to successfully reduce concentrations of benzene and naphthalene in groundwater utilizing in-situ chemical oxidation.  The site is a former military base with a targeted treatment area of approximately 1,800 square feet.  The client elected to implement DPT injection of a peroxide-based reagent to reduce COC concentrations in groundwater […]

Remediation: Permanganate Injection into Bedrock

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ORIN has completed the fifth and final planned injection event at a site in northwestern Wisconsin.  Bedrock injection can be difficult to perform, given the many micro-fractures associated with the matrix.  Manganese dioxide (MnO2), a by-product of oxidation by permanganate, is insoluble in water and may clog the macro- and micro-fractures if special attention is […]

Treatability Study: Using Various Oxidizers for TCE, PCE

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Objective
ORIN sought to compare the effectiveness of sodium permanganate and sodium persulfate treatment chemistries on TCE and PCE contaminated soil.
Methodology
Total oxidant demand testing for both persulfate and permanganate were performed with site soils.  Oxidant consumption was measured over a period of 96 hours to quantify oxidant consumption over the reaction period.  Persulfate and permanganate demand […]

Remediation: Three rounds of injection completed

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ORIN completes first of three rounds of injection for pilot testing of extract and re-inject process to create an oxidizing barrier to intercept the groundwater plume.  Project implantation is being conducted to test the treatment option for successfully targeting 1, 4-dioxane and CVOC’s.  The scope required a 24 hour around the clock extraction and injection […]