ARCHIVED REPORTS XR0006103 - Laserfiche WebLink

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6 SECTION C6, SLUDGE REMOVAL No significant amounts of sludge should be generated during the process The water ii ill be pumped to a sediments drop out tank All solids "sludge" collected will be added to the excavated soil pile 7 SECTION C7, MISCELLANEOUS None 8 SECTION C8, DIAGRAMS Please see attached groundv.ater hydrocarbon plume map, map of planned excavation and groundwater gradient map 9 SECTION C9, SAMPLING SCHEDULE. Each of the carbon canisters on site contains approximately 180 pounds of carbon Usually, when used in water based systems, carbon will absorb about 10%of it weight in h)drocarbons Approximately 18 pounds for the canisters used If the groundwater pumped from RW lA maintains its historic concentration during pumping each carbon canister can be expected to treat 37,213 gallons of water, 18 lb 148 37E-5 lb/gallon Most probably, once the equilibriuiu concentration«,ater has been removed the influent concentration will decrease significantly and the carbon canisters will be able to treat a much larger volume of water 9 1 SAMPLING SCHEDULE The initial sample of the system shall be taken after the system has treated 74,000 gallons of water During this sampling, the following samples v,ill be taken and analyzed TPHg/BTEX and the oxygenated compounds using EPA Method 82608 • Influent to the system • After the tlurd carbon • Discharge to the sanitary system The influent concentration at this point will be used to calculate the sampling interval The interval will be calculated from the volume of water that one carbon canister can treat at the current flowrate and influent concentration This sampling interval will be recalculated after each sampling event while pumping continues At no point will the sampling interval fall below once per month PART C PUMPING PLAN 1875 COUNTRY CLUB BLVD