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From CMomal ab Inc To Robert !Olay Date 91100 Time 2 05 44 PM Fax Page 8 of 8 <br /> CHROMALABs INC. Submission# 2000-08-0507 <br /> Environmental Services(SDB) <br /> To Aqua Science Enqlneers, Inc Test Method 8020 <br /> 8015M <br />' Attr1 Robert K tay Prep Method 5030 <br /> Batch QC Report <br />' Gas/BTEX <br /> L-aboratory Control Spike(LCSILCSD) Water QC Batch#2000108128-01 03 <br />' LCS 2000!0812&01 03-002 Extracted 08/28/2000 15 58 Analyzed 08/282000 15 58 <br /> LCSD 2000/08128-01 03-003 Extracted 08/282000 10 44 Analyzed 08/282000 1044 <br />' Compound Conc [ug/L] Exp Conc {ug1L] Recovery[%] RPD Cir! Limits[°6] Flags <br /> LCS LCSD LCS LCSD LCS LCSD IY.] Recovery RPD LCS LCSD <br />' Gasoline 550 554 500 500 1100 1108 07 75 125 20 <br /> Benzene 554 544 50 50 1108 1088 18 77-123 20 <br /> Toluene 568 563 50 50 1136 1126 09 78 122 20 <br /> Ethyl benzene 567 565 50 50 1134 1130 04 70-130 20 <br /> Xylenes) 170 171 150 150 1133 1140 06 75 125 20 <br /> surmgafe(s) <br /> 4 Bromofluorobenzene 292 290 250 500 1168 580 50 150 <br />' 4 Brma <br /> o (luorobenzene-FI 521 521 500 500 104 2 104 2 50 150 <br /> 1220 Quarry Lane'Pleasanton CA 94566-4756 <br /> Telephone (925)484-1919'Facsimile (925)484-1096 <br /> Printed on 09/01/2000 14 05 Page 7 of 7 <br /> t <br />