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az Sherwood <br /> 8071 NORTH LANDER AVENUE <br /> Labs PO BOX 937 <br /> C 0 R P 0 R a r r 0 N HILMAR CALIFORNIA 95324 <br /> 07/26/2000 QUALITY CONTROL REPORT DHS Certification#1400 <br /> Total Petroleum Hydrocarbons(TPH)Analysis Nancy Biedenweg, Lab Director/klb <br /> Client Geo-Phase Environmental, Inc Date Received 07/24/2000 <br /> 2937 Veneman #B240 Date Started 0712412000 <br /> I Modesto,CA 95356 Date Complete 0712512000 <br /> Attn Stephen Lankford <br /> Lab Report#i: H0072404 Lab Sample#fs PH0070770-PHOO70778 <br /> Line rity Check. <br /> BTEX Benzene 09984 TPH Gasoline 09998 <br /> Toluene 09978 TPH Diesel NIA <br /> I Ethyl Benz 09997 Motor Oil NIA <br /> l Xylenes 09996 TRPH (418 1) NIA <br /> MTBE NIA <br /> E /. <br /> Std ° Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> S <br /> BTEX NIA 104 106 102 98 <br /> TPH Gasoline 99 TPH Diesel NIA <br /> TRPH (418 1) NIA TPH Motor Oil NIA <br /> Matrix Spike Recoveries MS MSD RPD <br /> MTBE NIA NIA ERR <br /> BTEX Benzene 107 110 28 <br /> Toluene 108 112 3.6 <br /> Ethyl Benzen 110 108 47 <br /> IXylenes 105 99 5 9 <br /> TPH Gasoline 88 91 34 <br /> TPH Diesel NIA NIA ERR <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX NIA < 3 < 3 <3 <.3 <br /> TPH Gasoline <50 uad, TPH Diesel/MO NIA TRPH(4181) NIA <br /> Lab Control Sample% Recove EPA Performance Acceptance Range <br /> BTEX Benzene 106 731 - 124 <br /> Toluene 103 736 - 120 <br /> Ethyl Benz 102 725 - 118 <br /> Xylenes 111 727 - 121 <br /> TPH Gasoline 103 824 - 117 <br /> TPH Diesel NIA NIA - NIA <br /> TRPH (4181) NIA NIA <br /> OFFICE (209) 667-5258 FAX (209)667-2581 <br /> I <br />