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C H RO MALA B, INC. Submission #. 1999-08-0176 <br /> Environmental Services (SDB) <br />' To Aqua Science Engineers, Inc Test Method 8270A <br /> Attn Ian T Reed Prep Method 3510/8270A <br /> Batch QC Report <br /> Semi-volatile Organic Compounds <br /> Laboratory Control Spike (LCS/LCSD) Water QC Batch 4 1999/08/17-01 11 <br /> LCS 1999/08117-01 11-002 Extracted 08/17/1999 Analyzed 08/17/1999 14 03 <br /> 1 LCSD 1999108117-01 11-003 Extracted 08/17/1999 Analyzed 08/17/1999 14 49 <br /> Compound Conc [ug/L) Exp Conc [ug/L) Recovery [%) �PD Ctrl Limits[%] Flags <br /> tLCS LCSD LCS LCSD LCS LCSD Recovery RPD LCS LCSD <br /> Phenol 148 146 600 600 247 243 16 12-89 35 <br />' 2-Chlorophenol 473 477 600 600 788 795 09 23-134 25 <br /> 1,4-Dichlorobenzene 233 233 300 300 777 777 00 36-97 30 <br /> N-Nitroso-di-n-propylamin 284 291 300 300 947 970 24 10-130 34 <br /> 1,2 4-Trichlorobenzene 2311 215 300 300 793 783 13 44-142 35 <br />' 4-Chloro-3-methylphenol 579 587 600 600 965 978 1 3 22-147 31 <br /> Acenaphthene 273 276 300 300 91 0 920 11 56-118 30 <br /> 4-Nitrophenol 166 177 600 600 277 295 63 1-51 35 <br />' 2,4-Dinitrotoluene 288 304 300 300 960 1013 54 39-139 35 <br /> Pentachlorophenol 568 581 600 600 947 968 22 45-125 35 <br /> Pyrene 295 325 300 300 983 1083 97 52-115 35 <br /> Surrogate(s) <br /> Nitrobenzene-d5 248 250 25 25 992 1000 35-114 <br /> 2-Fluorobtphenyi 218 217 25 25 872 868 43-116 <br /> p-Terpheny1-d14 258 285 25 25 1032 1140 33-141 <br /> Phenol-d5 124 124 50 50 248 248 10-110 <br /> 2-Fluorophenol 210 209 50 50 420 41 8 25-100 <br /> 2,4,6-Tribromophenol 526 583 50 50 1052 1166 10-123 <br /> 1220 Quarry Lane"Pleasanton CA 94566-4756 <br /> Telephone (925)484-1919'Facsimile (925)484-1096 <br /> Printed on 08/20/1999 18 12 Page 35 of 36 <br />