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• brass sample tube into the soil until completely full The ends of the sample <br /> tubes were covered with aluminum foil and sealed with plastic end caps The <br /> samples were then labeled, placed in a cooler with ice, entered on a Chan-of- <br /> Custody form and transported to Sequoia Analytical, a State-certified <br /> environmental laboratory located in Redwood City, California <br /> Stockpile Samalina <br /> Four soil samples were collected for approximately every 75-100 cy of material <br /> generated The four samples were then combined in the laboratory and <br /> analyzed as one All stockpile samples were collected by removing the top 6 to <br /> 12 inches of soil, then pushing a sample tube or glass tar into the soil until <br /> completely full The samples were sealed, labeled, and handled as described <br /> above <br /> SAMPLE ANALYSIS <br /> Soil samples collected from the UST excavations, product piping trenches, and <br /> associated stockpiles were analyzed for Total Petroleum Hydrocarbons <br /> calculated as gasoline (TPH-Gasoline) according to EPA Method 8015 <br /> (Modified), Benzene, Toluene, Ethylbenzene, Xylenes (BTEX) and Methyl t-Butyl <br /> Ether (MTBE) according to EPA Method 8020, and Total Lead according to EPA <br /> SW-846 6010 <br /> The soil samples collected from the used-oil tank and associated stockpiles <br /> were analyzed for one or more of the following TPH-Gasoline, BTEX, MTBE, <br /> Total Petroleum Hydrocarbons calculated as Diesel (TPH-Diesel) according to <br /> EPA Method 8015 (Modified), Total Recoverable Petroleum Hydrocarbons <br /> according to Standard Methods method 5520 E&F and/or EPA Method 418 1, <br /> Halogenated Volatile Organic Compounds (HVOCs) according to EPA Method <br /> 8010, Volatile Organic Compounds (VOCs) according to EPA Method 8240, <br /> Semi-volatile Organics according to EPA SW-846 Method 8270, Cadmium, <br /> Chromium, Lead, Nickel, & Zinc according to EPA Method SW-846,6010, Static <br /> Acute Hazardous Waste Bioassay according to the California Department of <br /> Fish and Game WPCL, Reactivity, Corrosiv€ty, and Ignitab€lcty (RCI), and <br /> Inorganic Persistent and Bioaccumulative Toxic Substances TTLC (17 Metals) <br /> according to Title 22 of the California Code of Regulations Copes of the <br /> analytical laboratory reports and Chain-of-Custody forms are presented in <br /> Appendix A <br />• <br /> 9-4183 Page 4 <br />