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TAILGATE HEALTH AND SAFETY MEETING <br /> Before the start of field operations, a Tailgate Health and Safety Meeting will be conducted each <br /> day by the Project Manager or Health and Safety Officer to discuss anticipated risks and health <br /> hazards and the proper precautions that need to be observed. <br /> SOIL BORINGS <br /> Three (3) soil borings are proposed to be cored to a depth of 8-9 feet below ground surface (bgs) <br /> and above the groundwater. Groundwater is anticipated to be at 10 feet bgs in these borings. <br /> The borings will be cored with a van-mounted rig equipped with a hydraulic-powered percussion <br /> drive sampler. Soil samples will be obtained with a probing tool lined with three (3) 1-inch <br /> diameter by 6-inch long brass tubes. The probing tool will be pushed or hammered <br /> hydraulically into the soil. The bottom brass tube will be retained for laboratory analysis. The <br /> open ends of the retained sample tube will be covered with Teflon material, capped with plastic <br /> end caps, labeled, double bagged in sealable plastic bags, entered into a Chain of Custody form <br /> and placed on ice in a portable cooler for delivery to a California DHS-certified laboratory for <br /> analysis. <br /> Soil samples will be collected at 1 foot, 5 feet and 8 feet bgs in each of the borings. <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). Samples with high PID readings will be <br /> analyzed for petroleum hydrocarbons. Soil samples will be examined, described and logged <br /> under the supervision of a California Registered Geologist using the Unified Soil Classification <br /> System (USCS). <br /> All coring and sampling equipment will be cleaned prior to use to prevent cross contamination <br /> between borings. The sampling equipment and brass sample tubes will be cleaned using a <br /> solution of Alconox and tap water, rinsed in tap water and final rinsed with deionized water to <br /> prevent cross contamination between samples. Alconox is a non-phosphate detergent. <br /> After completion of the coring and sampling, the boreholes will be backfilled with bentonite <br /> chips, the chips hydrated and topped with a 2-foot plug of Portland cement or asphalt to grade. <br /> SOIL ANALYSIS <br /> All collected soil samples with be transported to Curtis & Tompkins, Ltd. of Irvine, California, <br /> in a chilled condition and under a Chain of Custody protocol, at the end of each day. Curtis & <br /> Tompkins is a California DHS-certified laboratory with DHS-ELAP Certificate No. 1443. <br /> CRC Environmental Risk Management,Inc. Project# 210U-217-2 <br /> American Savings Bank 150 West 10th Stud <br /> September 1994 2 Tracy, California <br />