ApproachAfter the removal of the USTs, the RemRx® technical consulting team utilized the proprietary Sureclean™ remediation software to define a site treatment plan. In situ chemical oxidation (ISCO) using RemRx® CRP was chosen as the amendment. An excavation perimeter was defined based on a migrating and enlarging plume and an excavation depth of 10 feet in a contained area of 20 feet x 20 feet allowing the amendments to be emplaced interfacing the surficial aquifer. (Figure 1)
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Site SpecificAccounting for natural oxidant demands, the dosage application of 712 lbs of RemRx® CRP was added as an in situ monolayer. The CRP site specific formulation consisted of a blended 3:4 ratio of both fast release and slow release CRP. An iron based FeEDTA liquid activator was applied post mixing and prior to the excavation backfilling.
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Evaluated Data
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Bench scale testing (Figure 2) demonstrated the effective treatment of similar contaminated soil types. The treatment plan was designed to optimize costs for both the funding partner, sub-contractors work on site (12 hours) and the supervising Environmental Engineering professionals.
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