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Sherwood <br /> Labs NORTH LANDER AVENUE <br /> CO RP ORATION P O 80X 937 <br /> HILMAR,CALIFORNIA 95324 <br /> ' 08!3012000 QUALITY CONTROL REPORT DHS Certification#1400 <br /> Total Petroleum Hydrocarbons(TPH)Analysis Nancy Biedenweg, Lab Director <br /> Client: GEOLOGICAL TECHNICS, INC. Date Received OW312000 <br /> 2741 RIVER RD Date Started 0812412000 <br /> MODESTO, CA 55351 Date Complete 08129/2000 <br /> ATTN. RAY KABLANOIN <br /> Lab Re ort* H0082306 Lab Sample Ns PHOO81045-PH0081046 <br /> ' <br /> Lineaft Check. <br /> BTEX Benzene 0.9989 TPH Gasoline 09995 <br /> Toluene 09982 TPH Diesel 09998 <br /> Ethyl Benz 09990 Motor Oil 09993 <br /> Xylenes 09995 DIELECTRIC OIL NIA <br /> MTBE NIA <br /> ' Std %Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> ' BTEX NIA 105 99 101 108 <br /> TPH Gasoline 93 TPH Diesel 92 <br /> DIELECTRIC OIL NIA TPH Motor Oil 84 <br /> Matrix Spike Recoveries MS MSD RPD <br /> MTBE NIA NIA ERR <br /> ' BTEX Benzene 102 101 1.0 <br /> Toluene 98 97 1.0 <br /> Ethyl Benzen 93 95 21 <br /> ' Xylenes 400 103 30 <br /> TPH Gasoline 90 83 81 <br /> ' TPH Diesel 94 90 4 3 <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> ' BTEX NIA <3 ug/Kg <3 ug/Kg <3 u <3 ug/Kg <br /> TPH Gasoline <1 qm24 TPM DlesellMO <5 mgfKg TRPH(4181) NIA <br /> ' Lab Control Sample% Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 106 731 - 124 <br /> ' Toluene 97 736 - 120 <br /> Ethyl Benz 101 725 - 418 <br /> Xylenes 116 727 - 121 <br /> TPH Gasoline 100 824 - 117 <br /> TPH Diesel 93 765 - 136.0 <br /> ' TRPH (418 1) NIA NIA <br /> OFFICE (209)667-5258 FAX (209)667-2581 <br />