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Working to Restore Nature <br /> TABLE 8 <br /> LABORATORY AND ANALYTICAL METHODS <br /> ARCO Service Station 2130 <br /> 7906 El Dorado Street <br /> Station, California <br /> (Page 3 of 3) <br /> EPA <br /> Field Sample Extraction EPA <br /> Event Type Laboratory Analysis Method Method <br /> November 1993 Water CAS TPHg 5030 Modified 8015 <br /> BTEX 5030 8020 <br /> Soil SAYS TPHg 5030 Modified 8015 <br /> BTEX 5030 8020 <br /> Analyses <br /> TPH = Total Purgeable hydrocarbons <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> TPHd = Total petroleum hydrocarbons as diesel <br /> BTEX = Benzene, toluene, ethylbenzene, and total xylene isomers <br /> Methods <br /> STLC = Soluble Threshold Limit Concentration <br /> TCLP = Toxic Characteristic Leaching Procedure <br /> EPA = Environmental Protection Agency <br /> CDHS= Califorma Department of Health Services approved methods <br /> Laboratones <br /> CAS Columbia Analytical Services, Inc,San Jose, California (Hazardous Waste Testing Laboratory <br /> Certificate 1426) <br /> SAL-S Sequoia Analytical Laboratory to Sacramento, California (California Hazardous Waste Testing <br /> Laboratory Certificate 1624) <br /> SAL-C Sequoia Analytical Laboratory in Concord, California (California Hazardous Waste Testing <br /> Laboratory Certificate 1271) <br /> �� 30003-7 <br />