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Submllssion # 1999-05-1136 <br /> C H R4MALAB, INC. <br /> Environmental Services (SDB) <br /> To Aqua Science Engineers, Inc Test Method 8260A <br /> Attn Greg Schramn Prep Method 5030 <br /> Batch QC Report <br /> Volatile Organic Compounds <br /> Laboratory Control Spike (LCSfLCSD) Water QC Batch # 1999/05/20-0107 <br /> LCS 1999105120-01 07-002 Extracted 05120/19991000 Analyzed 05/20/1999 10 00 <br /> LCSD 1999105/20-01 07-003 Extracted 05/20/1999 10 38 Analyzed 05/20/1999 10 38 <br /> Compound Conc [ ug/L. Added Recovery% RPD Control Limits % Flags <br /> LCS LCSD Amount LCS LCSD Recovery RPD LC5 LCSD <br /> Benzene 51614 53927 500 1032 1079 45 69-129 20 <br /> Chlorobenzene 53388 54833 500 1066 1097 2 7 61-121 20 <br /> 1,1-Dichloroethene 45210 46735 500 904 935 3 4 65-125 20 <br /> Toluene 52476 55114 500 1050 1102 48 70-130 20 <br /> Trichloroethene 50603 51758 500 1012 1035 22 74-134 20 <br /> Surrogate(s) <br /> 4-Bromofluorobenzene 49164 50487 500 983 1010 86-115 <br /> 1,2-Dichloroethane-d4 49641 51701 500 993 1034 76-114 <br /> Toluene-d8 51685 531 82 500 1034 1064 88-110 <br /> I <br /> 1220 Quarry Lane.Pleasanton,California 94566-4756 <br /> Telephone (925)4841919" Facsimile (925)484-1096 <br /> Printed on 05/25/1999 08 04 Page 15 of 17 <br />