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SOIL BORINGS <br /> Seven (7) soil borings are proposed to be cored to a depth of 15 feet below ground surface (bgs). <br /> Groundwater is not anticipated to be encountered in these borings. <br /> The borings will be advanced using a truck-mounted hydraulic-powered coring rig. Soil samples <br /> will be obtained with a 1 inch brass sleeve sampler. The open ends of the retained sample tube <br /> will be covered with Teflon material, capped with plastic end caps, labeled, double bagged in <br /> sealable plastic bags, entered into a Chain of Custody form and placed on ice in a portable <br /> cooler for delivery to a California DHS-certified laboratory for analysis. <br /> A portion of each recovered soil sample will be placed in a sealable plastic bag, disaggregated <br /> to release any volatile petroleum hydrocarbons, allowed to set for a few minutes, and field <br /> screened using a Photo Ionization Detector (PID). Soil samples will be examined, described <br /> and logged under the supervision of a California Registered Geologist using the Unified Soil <br /> Classification System (USCS) and analyzed for petroleum hydrocarbons. <br /> All coring equipment will be steam-cleaned prior to use to prevent cross contamination between <br /> borings. The sampling equipment and brass sample tubes will be cleaned using a solution of <br /> Alconox and tap water, rinsed in tap water and final rinsed with deionized water to prevent cross <br /> contamination between samples. <br /> After completion of the drilling and sampling, the boreholes will be backfilled with bentonite <br /> chips or cement grout to one foot below grade surface. The upper one foot will be capped with <br /> concrete or asphalt to match existing grade surface. <br /> SOIL ANALYSIS <br /> All collected soil samples with be sent to Curtis & Tompkins, Ltd. of Berkeley, California, in <br /> a chilled condition and under a Chain of Custody protocol, at the end of the drilling operation. <br /> Curtis and Tompkins is a California DHS-certified laboratory with DHS-ELAP Certificate No. <br /> 1459. <br /> Soil samples will be analyzed for Total Petroleum Hydrocarbons (TPH) in accordance with <br /> Modified EPA Method 8015 calibrated as gasoline and diesel, for Total Recoverable Petroleum <br /> Hydrocarbons (TRPH) in accordance with EPA Method 418.1, and for Volatile Organic <br /> Compounds (VOCs) in accordance with EPA Method 8240 and for Semi-Volatile Organic <br /> Compounds in accordance with EPA Method 8270. <br /> GROUNDWATER SAMPLES <br /> Groundwater is not anticipated to be encountered in the borings to 15 feet bgs. In the event <br /> that groundwater is encountered, water sampling will be conducted by means of 314 inch I.D. <br /> American Savings Bank Project k 2100-247-5 <br /> CRC Environmental Risk Management, Inc. 1888 Lockheed Court <br /> September 15, 1994 Stockton, California <br />