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Sherwood <br />' Labs 8071 NORTH LANDER AVENUE <br /> C O R P O R A T I O N PO BOX 937 <br /> HILMAR CALIFORNIA 95324 <br /> 04115199 QUALITY CONTROL REPORT DHS Certirication <br /> Total Petroleum Hydrocarbons(TPH)Anaiysis Nancy Biedenweg, Lab Director <br />' Client GEOLOGICAL TECHNICS, INC Date Received 04109199 <br /> 2741 RIVER RD Date Started 04109199 <br />' MODESTO, CA 95351 Date Complete 04105199 <br /> ATTN RAY KABLANOW <br /> Lab Re ort# H9040901 Lab Sample#s PH9040323-330 <br /> Linearq Check <br /> BTEX Benzene 09996 TPH Gasoline 09998 <br /> Toluene 09996 TPH Diesel N/A <br /> IEthyl Benzene 09999 Motor Oil NIA <br /> Xylenes 09993 DIELECTRIC OIL NIA <br /> IMTBE 0,9992 <br /> IStd % Repeatabtlity MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX 117 103 104 108 104 <br /> TPH Gasoline 96 TPH Diesel NIA <br /> DIELECTRIC OIL NIA TPH Motor Oil NIA <br /> Matrix Spike Recoveries MS MSD RPD <br /> MTBE 103 101 20 <br /> BTEX Benzene 103 95 81 <br /> Toluene 108 99 87 <br /> Ethyl Benzene 115 104 10D <br /> Xylenes 105 110 47 <br /> TPH Gasoline 81 83 24 <br /> ITPH Diesel NIA NIA ERR <br /> I Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX <50 u <3 u <3 u <3 ugLKM <3 ug/Kg <br /> TPH Gasoline :l i K TPH Diesel/MO <5 TRPH(418 1] NIA_ _ <br /> ILab Control Sample % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 99 731 T 124 <br /> Toluene 88 736 120 <br /> Ethyl Benz 96 725 - 118 <br /> Xylenes 97 727 121 <br /> TPH Gasoline 126 680 150 <br /> TPH Diesel NIA NIA - NIA <br /> TRPH (418 1) NIA NIA <br /> IOFFICE (209)667-5258 FAX (209)667-2581 <br />