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Sherwood . " <br /> Labs � <br /> NORTH LANDER AVENUE <br /> coRFoRAr1onr �La�`r. ',. ._.�4 <br /> _ _ ,,- . P.O.BOX 937 <br /> CA�IFORNIA95324 <br /> 04/09/99 QUALITY CONTROL REPORT IF DHS.Certification IF1400 <br /> Total Petroleum Hydrocarbons(TPH)Analysis Nancy Biedenweg, Lab Director <br /> I� I <br /> ye-2 <br /> Client: GEOLOGICAL TECHNICS, INC. Date Received: 01/22/99 <br /> 2741 RIVER RD. Date Starte'd: 01/25199 <br /> MODESTO, CA 95351 Date Complete: , 01127/99 <br /> ATTN: RAY KABLANOW <br /> Lab Report Ik H9012213 Lab Sample#s: PH9011i345 <br /> Linearity Check: <br /> BTEX Benzene 0.9993 TPH Gasoline 0.9998 3 <br /> Toluene 0.9995 TPH Diesel NIA <br /> Ethyl Benzene 0.9996 ;po Motor Oil NIA <br /> Xylenes 0.9998 DIELECTRIC OIL NIA <br /> MTBE NIA A� <br /> ji <br /> Std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX NIA 98 98 E 93 106 i <br /> TPH Gasoline 97 TPH Diesel' NIA <br /> DIELECTRIC OIL NIA TPH Motor Oil NIA <br /> Matrix Spike Recoveries MS MSD t RPD <br /> MTBE NIA NIA i'M ERR <br /> BTEX Benzene MATRIX INTERFERENCE - : ERR <br /> Toluene --- ERR } <br /> Ethyl Benzene ---- ERR <br /> Xylenes ----> r ERR <br /> TPH Gasoline 99 104 4.9 <br /> TPH Diesel NIA NIA ERR <br /> ii <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes 4 <br /> BTEX NIA <3 u <3 u ` ;<3 u <3 u } <br /> TPH Gasoline <1 m TPH DiesellMO NIA it TRPH(418.1) NIA <br /> G <br /> Lab Control Sample% Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 87 73.3 - 126 <br /> Toluene 87 73.0 - 118 ` <br /> Ethyl Benz 94 71.2 ,' - 118 <br /> Xylenes 95 71.6 i - 120 <br /> TPH Gasoline 127 68.0 - 150 <br /> TPH Diesel NIA <br /> TRPH (418.1) NIA °I NIA:1 <br /> OFFICE: (209) 667-5258 FAX:(209)667-2581 <br /> ) <br />