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^�, �r c��, �-. � -.f, ,r'kyy �v.,-w a• t'_ a �i�...., '. .t' �«'. �� � n�. e;t .rm. <br /> 5 <br /> Ms. Laurie Cotulla <br /> October 5, 1987 <br /> Page 3 <br /> Table 1. Analytical Results of August 20, 1987, <br /> Soil Sample, ARCO Station 2133 <br /> Sample <br /> number Detection Designated _ <br /> Constituent WO-1 limit levcla <br /> k,PAb 8010; solvents ND 0.001 Variablec <br /> . EPA 8015, modified; total <br /> petroleum fuel hydrocarbons 3,719,' 10 NE <br /> EPA 8020 <br /> Benzene 0.15 0.005 0.7 <br /> Ethy`lbenzene 0.76 0.005 680 <br /> Toluene 0.112 0.005 100 <br /> Xylene 1.2 0.005 620 <br /> EPA 8080; PCBsd ND 0.1 0.00079 <br /> -yf aCalifornia Regional Water Quality Control Board, Central Valley <br /> Region, designated level in soil for the protection of groundwater <br /> quality (September 1986) . <br /> bU.S. Environmental Protection Agency Method. <br /> cVariable because many different types of solvents are tested by <br /> EPA Method 8010. <br /> dPolychlorinated biphenyls. <br /> Note: All results shown in milligrams per kilogram; <br /> ND = nondetectable, NE = not established. <br /> Soil sample WO-1 had detectable levels of total petroleum fuel <br /> hydrocarbons. No designated levels have yet been established for <br /> total petroleum fuel hydrocarbons. Benzene, ethylbenzene, toluene, <br /> and xylene constituents were detectable in sample WO-1, Lut below <br /> the California Regional Water Quality Control Board designated <br /> levels in soil for the protection of groundwater quality (September <br /> 1936) . All other constituents in sample WO-1 were nondetectable. <br /> Based on the history of the site and the results of DC's May 25, <br /> 1987, site investigation, we expected that the soil beneath and <br /> around the waste oil tank would have detectable hydrocarbon <br /> product. The hydrocarbon product found in soil sample WO-1 is <br /> '•� partly due to the May 24, 1984, product leak"at the site. <br /> SROWP AND CALDWELL <br /> 7;;IS SIREE� SA�SIAMf,fi iEI.CA USAI4•j<11G44401;] ..-,µ `..-.�- ._�.•--- �.�_�. ^� <br /> �r <br />