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03/09/98 <br /> QUALITY CONTROL REPORT DHS Certification #1400 <br /> Volatile Analyses <br /> Client: Foothill Engineering Date Received: 10/02/95 <br /> 12783 Patty Creek Lane Date Started: : 10IW95 <br /> Lodi, CA 93240 Date Complete: 10/03/95 <br /> ATTN: Ervin RNenburg <br /> Lab Report#E: H5101018 Lab Sample#s PH5101149-1151 <br /> Linos ri Cheok: <br /> STEX Benzene 0.9993 TPH Gasoline 0.9999 <br /> Toluene M9991 TPH Diesel NIA <br /> Ethyl Benzene 0.9993 Motor Oil N/A <br /> Xylenee 0.9992 TRPH (418.1) NIA <br /> MTBE NIA <br /> IStd% Rep!!!ab1lity MTBE Benzene Toluene Eth Benz Xylenee <br /> BTEX Anawith multi point calibration. <br /> TPH Gasoline 90 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 89.0 88.0 1.1 <br /> Toluene 93.0 920 1.1 <br /> Ethyl Benzene 84.0 91.0 B.0 <br /> Xylenes 88.0 B8.0 0.0 <br /> TPH Gasoline 98.0 98.0 0.0 <br /> TPH Diesel NIA N/A ERR <br /> TRPH 418.1 NIA <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <3 ug/Kg ug/Kg <3 u Kg <3 ug/Kg ug/Kg <3 ug/Kg <br /> TPH Gasoline <1 u K TPH DlmwVMO <3 mq/Kg TRPH(418.1) N/A <br /> Lab Control Sample% Recove EPA Performance Acceptance Range <br /> BTEX Benzene 99 37.0 - 131.0 <br /> Toluene 103 47.0 - 130.0 <br /> Ethyl Bens 113 36.5 - 1620 <br /> Xylenes 108 427 - 137.8 <br /> TPH Gasoline 102 33.0 - 130.1 <br /> TPH Diesel N/A 43.1 - 135.2 <br /> TRPH (418.1) NIA NIA <br /> Gloria Poling, Lab Director <br />