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SM. erwood <br /> ' Labs 8071 NORTH LANDER AVENUE <br /> CORPORA T / ON PO BOX 937 <br /> FULMAR,CALIFORNIA 95324 <br /> 03/23/01 QUALITY CONTROL REPORT DHS Cert. #1400 <br /> Total Petroleum Hydrocarbons(TPH) Analysis <br /> ' Client: GEOLOGICAL TECHNICS, INC. Date Received 03/16/01 <br /> 2741 RIVER RD Date Started 03/16/01 <br /> MODESTO, CA 95351 Date Complete. 03/22/01 <br /> ' ATTN RAY KABLANOW <br /> Lab Report #- H1031607 Lab Sample #,PH1030930-PH1030937 <br /> Linearity Check <br /> ' BTEX Benzene 0.9998 TPH Gasoline 0 9992 <br /> Toluene 0.9996 TPH Diesel 0.9993 <br /> ' Ethyl Benz 0.9994 Motor Oil 0.9994 <br /> Xylenes 0.9992 TRPH (418 1) N/A <br /> MTBE N/A <br /> ' 3td % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 103 98 100 95 <br /> ' TPH Gasoline 102 TPH Diesel 106 <br /> TRPH (418 1) N/A Motor Oil 107 <br />{ <br /> / beat,,, Spike Reooveries MS MSD RPD <br /> r <br /> MTBE N/A N/A N/A <br /> BTEX Benzene 96 98 2 <br />' Toluene 95 100 5 <br /> Ethyl Benz 99 84 14 <br /> xylenes 101 99 2 <br /> TPH Gasoline 110 108 2 <br /> TPH Diesel 91 91 0 <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <.3 ug/L <.3 ug/L <.3 ug/L <.3 ug/L <br />' TPH Gasoline <50 ug/L Diesel/MO <50 ug/L TRPH(418.1) N/A <br /> Lab Control Sample t Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 96 73 1 - 124 <br /> Toluene 85 73 6 120 <br /> Ethyl Benz 97 72 5 - 118 <br /> Xylenes 105 72 7 121 <br /> W <br /> TPH Gasoline 97 82 4 117 <br /> TPH Diesel 118 55.8 - 122 <br /> TRPH 4 8 1) N/A N/A <br /> qCz3lo/ <br />' 09) 667-5258 FAX (209)667-2581 <br />