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i <br /> Jl S- -,h,, erwood <br /> Labs, 8071 NORTH LANDER AVENUE <br /> . CO RPO RATION P.O.BOX 937 <br /> HILMAR, CALIFORNIA 95324 <br /> i <br /> 05/04/01 QUALITY CONTROL REPORT DHS Cert. #1400 <br /> iTotal Petroleum Hydrocarbons(TPH) Analysis <br /> Client: BLAKELY ENVIRONMENTAL Date Received: 04/30/01 <br /> i PO BOX 339 Date Started: 05/01/01 <br /> WRIGHTWOOD,CA 92397 Data Complete: 05/04/91 <br /> ATTN: MELANIE SELF <br /> iLab Rapor H104302• Lab Sample #ePH1041416-PH1041428 <br /> Linearity Check: <br /> BTEC Benzene 0.9994 TPH Gasoline 0.9999 <br /> Toluene 0.9993 TPH Diesel 0.9998 <br /> Ethyl Benz 0.9953 Motor Oil 0.9998 <br /> Xylenes 0.9988 TRPH (418.1) N/A <br /> MTBE N/A <br />' std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 106 109 98 112 <br /> TPH Gasoline 109 TPH Diesel 102 <br /> . TRPH (418.1) N/A Motor Oil 105 <br /> Matrix Spike Recoveries MS MSD RPD <br />' MTBE N/A N/A N/A <br /> BTEC Benzene 96 96 0 <br /> Toluene 100 99 1 <br />' Ethyl Benz 106 106 0 <br /> Xylenes 102 102 0 <br /> TPH Gasoline 95 99 4 <br /> TPH Diesel 96 97 1 <br /> i 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 /> iLab Control Sample % Recovery EPA Performance Acceptance Range <br /> BTEC Benzene 84 73.1 - 124 <br />' Toluene 85 73.6 - 120 <br /> Ethyl Benz 91 72.5 118 <br /> Xylenes 99 72.7 - 121 <br />' TPH Gasoline 100 62.4 - 117 <br /> TPH Diesel 96 75.8 - 124 <br />' TRPH (418.1) N/A N/A <br /> a e-c' �' c pC�-�-L c c 7 //d/ <br /> N Bii denweg, Lab D eat <br /> OFFICE: (209)667-5258 FAX: (209)667-2581 <br />