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C H RO MALAB, INC. Subrnission # 1999-05-1062 <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 (LCSILCSD) Water QC Batch # 1999105114-01 09 <br /> LCS 1999105114-0109-002 Extracted 05/14/1999 11 42 Analyzed 05114119991142 <br /> LCSD 1999105114-01 09-003 Extracted 05/14/1999 12 31 Analyzed 05/14/1999 12 31 <br /> Compound ; Conc [ug/L j Added Recovery% RPD , Control Limits % Flags <br /> LCS LCSD 1 Amount LCS ; LCSD I Recovery RPD LCS LCSD <br /> Benzene 959 986 100 959 986 1 2 8 69-129 20 <br /> Chlorobenzene 104 111 100 ' 1040 1110 65 I 61-121 20 <br /> I <br /> 1 1-Dichloroethene 888 909 100 888 ', 90 9 ! 2 3 65-125 20 <br /> Toluene 95 0 967 100 950 967 Is 70-130 20 <br /> i <br /> Trichloroethene 946 94 0 100 946 94 0 06 74-134 20 <br /> Surrogate(s) <br /> 4-Bromotluorobenzene 48994 467 14 500 980 93 4 86-115 <br /> 1 2-Dichloroethane-d4 47772 508 78 500 955 i 1018 ' 76-114 <br /> Toluene-d8 50218 967 I 500 1004 E 96 7 88-110 <br /> a <br /> 1220 auarry Lane'Pleasanton,California 94566-4756 <br /> Telephone (925)484-1919'Facsimile (925)484-1096 <br /> Printed on 05/19/1999 15 19 Page 21 of 24 <br />