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CHROMALAB! INC, Submission #: 1999-06-0242 <br /> Environmental Services(SDB) <br /> To Azure Environmental Test Method 8015M <br /> 8020 <br /> Attn Jeff Hennier Prep Method 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> ' Laboratory Control Spike (LCS/LCSD) Water QC Batch#1999106/22-01.05 <br /> LCS 1999/06/22-01 05-002 Extracted 06/22/1999 07 43 Analyzed 06/22/1999 07 43 <br /> LCSD 1999/06/22-01 05-003 Extracted 06/22/1999 08 47 Analyzed 06/22/1999 08 47 <br /> Compound Conc [ug/L] Exp Conc [ug/L] lReeovery[% RPD Ctrl Limits(%] Flags <br /> LCS LCSD LCS LCSD LCS j LCSD [96] Recovery RPD LCS LCSD <br /> Gasoline 447 459 I 500 I 500 8941 918 26 75-125 20 <br /> 1 Benzene 972 912 1000 1000 97 2� 912 6 4 77-123 20 <br /> Toluene 997 94 0 100 0 1000 9971 94 0 59 78-122 20 <br /> Ethyl benzene 102 935 I Iwo 1000 i 10201' 93 5 87 70-130 20 <br /> Xylene(s) 300 1280 ' 300 300 1 100 01 93 3' 6 9 75-125 20 <br /> Surrogate(s) ! <br /> Tnfluorotoluene 1555 1515 1 500 I 500 1 111 0: 103 01 <br /> 58-124 <br /> 4-Brornofluorobenzene-FI 1 393 1407 I Soo 500 78 6 8141 50-150 j <br /> ' 1 <br /> 1220 Quarry LanePleasanton CA 94566-4756 <br /> Telephone (925)4841919'Facsimile (925)484-1096 <br /> Printed on 06/24/1999 17 34 Page 14 of 15 <br />