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SEASON TWO IN SITU TREATMENT COMPLETION REPORT LOCKHEED MARTIN MIDDLE RIVER COMPLEX 2323 EASTERN BOULEVARD MIDDLE RIVER, MARYLAND
Lockheed Martin Corporation, 54 pages, 2018

This completion report summarizes placement of 2,504 tons AquaGate+PAC® (powdered activated carbon) 10% dry weight over 13.7 acres of PCB-contaminated sediment in Dark Head Cove near the Lockheed Martin Complex. Field application was completed from October to December 2017. The report describes construction performed to place the material and summarizes site preparation, the pre-project pilot study, and quality control procedures. Quality control tests and laboratory analytical sampling results for the surficial sediment confirm that the design intent and project objectives were achieved. The activated carbon concentrations currently in Dark Head Cove sediment are considered adequate to reduce PCB concentrations within the pore water, resulting in an overall reduction of bioaccumulation. Long-term monitoring will measure the reduction in bioaccumulation of PCBs by benthic invertebrates and the reduction in sediment pore water concentrations. https://www.lockheedmartin.com/content/dam/lockheed-martin/eo/documents/remediation/middle-river/season2-insitu-ccr-april2018.pdf See presentation for more information: https://www.battelle.org/docs/default-source/conference-proceedings/2019-sediments-conference-proceedings/b9.-field-scale-application-of-in-situ-treatment-technologies/b9_0850_-297_craigie.pdf?sfvrsn=f4f71bfa_2



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