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Page: 4 <br /> IT ANALYTICAL SERVICES <br /> Company: IT Corporation, Martinez SAN JOSE, CA <br /> Date: 01/21/92 <br /> Client Work ID: 190916 Pac Bell Stockton Work Order: TI-12-147 <br /> TEST NAME: Petroleum Hydrocarbons <br /> SAMPLE ID: 121292M I <br /> SAMPLE DATE: 12/12/91 <br /> LAB SAMPLE ID: T112147-03 <br /> SAMPLE MATRIX: aqueous <br /> RECEIPT CONDITION: Cool pH < 2 <br /> RESULTS an Micrograms per Later: <br /> EXTRACTION ANALYSIS <br /> METHOD DATE DATE <br /> BTEX 8020 12/20/92 <br /> High Boiling Hydrocarbons Mod.8015 12/18/91 12/19/91 <br /> DETECTION <br /> PARAMETER LIMIT DETECTED <br /> BTEX <br /> Benzene 0.5 None <br /> Toluene 0.5 None <br /> Ethylbenzene 0.5 None <br /> Xylenes (total) 0.5 None <br /> High Boiling Hydrocarbons <br /> calculated as Diesel 50. 130. @ <br /> SURROGATES % REC <br /> 1,3-Dichlorobenzene (BTEX) 94. <br /> nC32 (Diesel) 52. <br /> Comments: <br /> @ Compounds detected and calculated as high boiling hydrocarbons <br /> consist of compounds eluting within the chromatographic range <br /> of diesel, but are not characteristic of the standard diesel <br /> standard pattern. <br /> 682 1 89 <br />