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9000030411 C-N_:2 <br /> feet will be collected and analyzed for fertilizer, pesticide, and waste <br /> oil constituents. <br /> 3.3 SOIL SAMPLING METHODS <br /> Soil samples will be collected from borings drilled with small-diameter <br /> hollow-stem augers. Soil samples for chemical analysis will be collected <br /> using a Modified California sampler with brass liners. Soil samples will <br /> be collected by drilling to a point immediately above the sample interval , <br /> and then inserting and driving the sampler. After retrieval , the brass <br /> tube will be sealed using Teflon sheets over each end, plastic caps, and <br /> electrical tape. Samples will be stored in a chilled cooler for transport <br /> to the analytical laboratory. All sample collection, handling, and <br /> shipment activities will be conducted using chain-of-custody procedures. <br /> Soil samples for lithologic logging will be collected continuously and <br /> will be described according to the Unified Soil Classification System by a <br /> qualified hydrogeologist or geologist. All downhole equipment will be <br /> steam-cleaned prior to use and between borings. Rinsate water and drill <br /> cuttings will be contained in 55-gallon drums. After sampling, the <br /> boreholes will be backfilled with a cement-bentonite grout. <br /> 3.4 WATER SUPPLY WELL SAMPLING <br /> One groundwater sample will be collected from the onsite water supply <br /> well to assess whether water supply water has been impacted by facility <br /> operations. The well will be purged of three casing volumes of water prior <br /> to sample collection by activating the well pump. The purged water will be <br /> collected in the holding tank. Due to the presence of the well pump and <br /> associated piping in the well , the water sample will be collected from a <br /> spigot at the well head. The samples will be analyzed for all parameters <br /> listed in Table 4-1. The sample water will be collected in the appropriate <br /> containers and preservatives added as necessary. The containers will be <br /> 3-8 <br />