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I r <br /> Sherwood <br /> �� � 8071 NORTH LANDER AVENUE <br /> P O BOX 937 <br /> P O R A T I O N <br /> HlLMAR,CALIFORNIA 95324 <br /> 03117/99 QUALITY CONTROL REPORT DHS Certification #1400 <br /> Total Petroleum Hydrocarbons(TPH)Analysis Nancy Biedenweg, Lab Director <br /> Client FOOTHILL ENGINEERING Date Received 03/11/99 <br /> 12793 PADDY CREEK LN Date Started 03/14199 - <br /> LODI, CA 95240 Date Complete 03117/99 <br /> ATTN ERVIN RIFENBURG <br /> Lab Re ort# H9031102 Lab Sample Us PH9030310-311 <br /> Linearity Check <br /> BTEX Benzene 09997 TPH Gasoline 09998 <br /> Toluene 09994 TPH Diesel NIA <br /> Ethyl Benzene 09996 Motor Oil NIA <br /> Xylenes 09989 TRPH (4181) NIA <br /> MTBE NIA <br /> Std % Re eatabili MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX NIA 100 101 100 102 <br /> TPH Gasoline 101 TPH Diesel NIA <br /> TRPH (418 1) NIA TPH Motor Oil NIA <br /> 8k-- <br /> RPD <br /> Matrix Spike Recoveries MS MSD <br /> MTBE NIA NIA ERR <br /> BTEX Benzene 104 - - 104 00 <br /> Toluene 105 104 1 0 <br /> Ethyl Benzene 109 108 09 <br /> Xylenes 105 i01 39 <br /> TPH Gasoline 111 118 61 <br /> TPH Diesel NIA NIA ERR <br /> Method Blank MTBE Benzene Toluene E:th Benz Xylenes <br /> BTEX N/A <3 u <3 u < u ' <3 u ' <br /> TPH Gasoline <lm TPH DiesellMO N/A TRPH(418 1) N/A <br /> Lab Control Sample% Recove EPA Performance Acceptance Range <br /> BTEX Benzene 104 733 - 126 <br /> Toluene 102 730 - 118 <br /> Ethyl Benz 100 71 2 - 118 <br /> Xylenes 105 715 - 120 <br /> TPH Gasoline 134 680 - 150 <br /> TPH Diesel NIA NIA NIA <br /> TRPH (418 1) NIA NIA <br /> OFFICE (209)667-5258 FAX (209)667 2581 <br />