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\0, .Wi A 30 May 2014 AGE Project No. 13-2557 Page 3 of 5 3.0. SOIL SAMPLING At the direction of an EHD representative, staff from Precision Environ-Tech Analytical Laboratory (Precision) collected a soil sample from the base of Tank #1 at nine feet below surface grade (bsg), following several excavations into native soil. An additional three feet of soil was removed below the floor of the excavation prior to the sample collection. In addition to excavation bottom samples, samples were from overburden soil stockpiles at the site. For soil the sample collected from the excavation, the backhoe bucket was used extract a sample at depths of approximately nine (9) feet bsg. Once the bucket was at the surface, staff from Precision collected samples using a metric slide hammer and a two by six-inch steel sleeve; the slide hammer was also used to collect samples from various locations within the excavated (stockpiled) soil. Upon collection of each sample, the ends of were covered with Teflon tape, capped and sealed with tape. Samples were then labeled with the sample location, date and time and were placed on ice until they were analyzed at Precision's lab for the following constituents: • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and total petroleum hydrocarbons quantified as diesel (TPH-d), in accordance with Environmental Protection Agency (EPA) Method 8015M. • Volatile organic compounds (VOCs), including chlorinated VOCs and "BTEX" compounds and fuel additives/fuel oxygenates (methyl tertiary butyl ether [MTBE], tertiary butyl alcohol [TBA], di-isopropyl ether [DIPE], ethyl tertiary butyl ether [ETBE], tertiary amyl methyl ether [TAME] and lead scavengers 1,2- dichloroethane [1,2-DCA] and 1,2-dibromomethane [EDB]) in accordance with EPA Method 8260B. • Polychlorinated bi-phenols (PCBs) in accordance with EPA Method 8082. Total lead, cadmium, chromium, nickel and zinc by EPA Method 6010B/6020/207/208. 4.0. FINDINGS The following is summary of the analytical results of the UST and stockpile soil samples: • TPH-g was detected in both the excavation bottom and stockpile samples at concentrations from 35.2 milligrams per kilogram (mg/kg) and 42.3 mg/kg. Advanced GeoEnvironmen[al,Inc.