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A e� labeled, packaged with ice, and stored in an insulated chest for transport under chain-of-custody manifest to a California-certified analytical laboratory Groundwater samples were labeled with the boring number, depth, date, time, and initialed For example SC-1-64, where SC-1 is the boring number and 64 is the sample depth in feet Temperature, pH, and conductivity of each groundwater sample were recorded on field report forms Drilling and sampling procedures are included in Appendix A Following the Iast sample, an expendable Hydropunch® tip was knocked out and, per county requirements, the hole was grouted with 20 1 cement/bentonite grout, from the bottom up, during removal of the probe casing All drilling and sampling equipment was washed prior to drilling In addition, the probe casing, probe tips, screen, and bailer were decontanunated by steam cleaning between each sample. Soil cuttings were not generated during CPT drilling operations Wash water generated during the field investigation was placed into 208-liter(55-gallon) drums approved by the United Nations for transport of liquid and solid wastes, stored in a secure area at the site pending laboratory analysis The cone penetration test data is included in Appendix B 2.4 Laboratory Analyses The groundwater samples were submitted to Creek Environmental Laboratories, Inc , and Precision Enviro-Tech, Inc , California-certified analytical laboratories, for analysis Chain-of-custody procedures, including the use of chain-of-custody forms, were used to document sample handling and transport from the time of collection to delivery to the laboratory for analysis The chain-of-custody forms, laboratory analytical reports, and chromotographs are included in Appendix C EIectronic laboratory data will be submitted to the State Water Resources Board GeoTracker Site The confirmation number will be provided at that time The analyses were conducted on a normal turn-around basis in general accordance with U S Environmental Protection Agency (EPA) specified holding times The analyses were performed in general accordance with the following EPA methods Matrix Analyses Water Gasoline Analysis Package EPA Method 8015/8020 Water Total Petroleum Hydrocarbons as Diesel Modified EPA Method 8015 Water Aromatic and Halogenated Volatile Organics EPA Method 8021 B Water GC/MS Fuel Oxygenate Compounds EPA Method 82608 zans+P+�nPre�a3ta3sznzatax 2-3