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f <br /> i <br /> I: <br /> li r <br /> Laboratory data sheets for these analyses are !,included in Appendix 1. <br /> Benzene Toluene Xylenes <br /> Sample Number, Type TVH (ppb) TEH (ppb) (p!pb) (ppb) (ppb) <br /> #1, Water 11' 240,000 930,000 3'.,000 23000 40,000 <br /> i•' #2, Soil - 10' 920,000 12,000,000 43,000 - 170,,000 180,000 <br /> The relatively high total hydrocarbon and benzene, toluene and xylene { <br /> concentrations in the water samples exceed generally accepted solubility <br /> limits and likely reflect the presence of fuel globules on the water or y <br /> emulsified product in the water. As such, the water sample would not <br /> likely reflect groundwater conditions away from the source area unless a <br /> free product plume exists. <br /> During tank removal operations Mr. William Snavely, Registered Sanitarian, <br /> from the San Joaquin Local Health District (SJLHD) <br /> was on-site. An <br /> Underground Storage Tank Unauthorized Release . (Leak)/Contamination Site <br /> Report was filed by Mr. Snavely on February 9, ,;1988. The tank excavation <br /> has not been backfilled, pending further site assessment work as set forth <br /> herein. <br /> SITE CONDITIONS <br /> On September 21, 1988 McLaren Environmental!'j. Engineering conducted an <br /> initial site visit at the. Stockton Ford Nlew Holland dealership to <br /> determine: <br /> �II <br /> Soil and groundwater conditions at tte site and in surrounding <br /> areas; <br /> Proximity of private and municipal wells; <br /> i <br /> Proximity of septic tanks; j. <br /> i <br /> Locations of utilities on-site; and <br /> i <br /> Proposed soil boring and monitor well ,locations. <br /> The site visit included: 1) Field inspection and meeting with Charles <br /> Iker, General Manager of the Stockton Ford New Holland, Inc. dealership; <br /> r2) Identification of land use on surrounding ppperties; 3) Contact with <br /> L•' the San Joaquin Local Health Department; 4) Contact with the local Flood <br /> Control District; and 5) Telephone communication with California Water <br /> Service. <br /> The Stockton Ford New Holland site is located in a broad, flat area at an <br /> elevation of approximately five feet above mean sea level (MSL) . The site <br /> is underlain by late Pleistocene coarse to fine-grained, unconsolidated <br /> sediments that have accumulated in a flood plain - overbank environment. <br /> { <br /> 4 '' <br />