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Sherwood <br /> ' Labs 8071 NORTH LANDER AVENUE <br /> C 0 11 P O 1? A r 1 0 N P0. BOX 937 <br /> HILMAR, CALIFORNIA 95324 <br /> 08/10/01 QUALITY CONTROL REPORT DHS Cert. 01400 <br /> Total Petroleum Hydrocarbons(TPH) Analysis <br /> ' Client: BLAKELY ENVIRONMENTAL Date Received: 08/07/01. <br /> PO BOX 339 Date Started: 08/08/01 <br /> WRIGHTWOOD,CA 92397 Date Complete: 08/09/01 <br /> ' ATTN-. MELANIE SELF <br /> Lab Repor H108070: Lab Sample #:PH1080148-PH1080159 <br /> Linearity Check: <br /> ' BTEX Benzene 0.9985 TPH Gasoline 0.9996 <br /> Toluene 0.9988 TPH Diesel 0.9999 <br /> Ethyl Benz 0.9996 Motor Oil 0.9982 <br /> Xylenes 0.9996 TRPH (418.1) N/A <br /> MTBE N/A <br /> ' std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 98 98 102 99 <br /> TPH Gasoline 104 TPH Diesel 105 <br /> TRPH (418.1) N/A Motor Oil 104 <br /> Matriz spike Recoveries I MS MSD RPD <br /> MTBE N/A N/A N/A <br /> BTEX Benzene 101 103 2 <br /> Toluene 103 100 3 <br /> Ethyl Benz 105 99 6 <br /> Xylenes 102 103 1 <br /> TPH Gasoline 105 105 0 <br /> TPH Diesel 100 103 3 <br />' wthod a1■nk 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 % Recovery EPA Performance Acceptance Range <br /> BTEX Benzenes 104 73.1 = 124 <br /> r'xj11l1IISl. lim- 7.L& I-4AL <br /> Ethyl Benz 99 72.5 - 118 <br /> .Y�►1 en�etis 1 L►4 72. 7 - 121 <br /> TPH Gasoline 103 82.4 - 117 <br /> TPH Diesel 98 75.8 - 124 <br /> TRPH (418.1),/ N/A N/A <br /> r 1 c.. enweg, <br /> 09)667-5258 FAX: (209) 667-2581 <br /> 1 <br />