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Sherwood <br /> Labs 8671 NORTH LANDER AVENUE <br /> C 0 R P 0 R A r 1 0 N PO BOX 937 <br /> HILMAR,CALIFORNIA 95324 <br /> ' 05/23/0 . QUALITY CONTROL REPORT DHS Cert. #1400 <br /> Total Petroleum Hydrooarbons(TPH) Analysis <br /> ' Client: GEOLOGICAL TECHNICS, INC. Date Received: 05/18/01 <br /> 2741 RIVER RD. Date Started- 05/18/01 <br /> ' MODESTO, CA 95351 Date Complete: 05/23/01 <br /> ATTN: JOE ANGULO <br /> Lab Report 0: H1051803 Lab Sample #iPH1050723-PH1050730 <br /> ' x,�n.rrity Ch.c>c <br /> BTEX Benzene 0.9995 TPH Gasoline 0.9997 <br /> ' Toluene 0.9985 TPH Diesel N/A <br /> Ethyl Benz 0.9997 Motor Oil N/A <br /> Xylenes 0.9988 TRPH (418.1) N/A <br /> ' MTBE 1.0000 <br /> Std % Repentabiiity WBE Benzene Toluene Eth Benz Xylenes <br /> ' BTEX 109 102 103 102 111 <br /> TPH Gasoline 97 TPH Diesel N/A <br /> TRPH (418.1) N/A Motor Oil N/A <br /> matrIx Spike Recoveries 10 MSD RPD <br /> MTBE 100 106 6 <br /> ' BTEX Benzene 108 113 5 <br /> Toluene 102 101 1 <br /> Ethyl Benz 97 98 1 <br /> ' Xylenes 101 102 1 <br /> TPH Gasoline 102 103 1 <br /> ' TPH Diesel N/A N/A N/A <br /> method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> ' BTEX ND<50 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Kg <br /> TPH Gasoline <1 mg/Kg D3.esel/M4 N/A TRPH(418.1) N/A <br /> Lala control sample % Recovery EPA Perfor anoe Aoeeptance Range <br /> ' BTEX Benzene 106 73.1 - 124 <br /> Toluene 101 73 6 - 120 <br /> ' Ethyl Benz 103 72.5 - 118 <br /> Xylenes 110 72.7 1.21 <br /> TPH Gasoline 103 82 4 - 117 <br /> ' TPH Diesel N/A N/A - N/A <br /> TRPH (418.1) N/A N/A <br /> tIaZ46�B�dan�eg, Lab D eot r <br /> OFFICE (209)667-5258 FAX (269)667-2581 <br />