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Lancaster � <br /> . Laboratories Analysis Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605.2425•717-656-2300 Fax:717-656-2681•www.laneasterlabs.com ' <br /> Page 6 of 14 <br /> Quality Control Summary ' <br /> Client Name: Chevron Group Number: 1127396 <br /> Reported: 01/21/09 at 05:10 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL** Loo Units %RSC %REC Limits RPD RPD Max <br /> Ethylbenzene N.D. 0.5 4 ug/l 101 82-119 ' <br /> m+p-Xylene N.D. 0.5 4 ug/l 99 83-113 <br /> o-Xylene N.D. 0.5 4 ug/l 98 83-113 <br /> Styrene N.D. 1. 5 ug/l 92 82-111 <br /> Bromoform N.D. 1. 5 ug/l 89 69-118 <br /> Isopropylbenzene N.D. 1. 5 ug/l 103 80-113 ' <br /> 1,1,2,2-Tetrachloroethane N.D. 1. 5 ug/l 93 72-119 <br /> Bromobenzene N.D. 1. 5 ug/l 99 82-110 <br /> 1,2,3-Trichloropropane N.D. 1. 5 ug/l 100 78-117 <br /> n-Propylbenzene N.D. 1. 5 ug/l 102 78-119 <br /> 2-Chlorotoluene N.D. 1. 5 ug/l 96 78-115 <br /> 1,3,5-Trimethylbenzene N.D. 1. 5 ug/l 101 78-116 ' <br /> 4-Chlorotoluene N.D. 1. 5 ug/l 97 80-112 <br /> tert-Butylbenzene N.D. 1. 5 ug/l 101 74-114 <br /> 1,2,4-Trimethylbenzene N.D. 1. 5 ug/l 102 78-117 <br /> sec-Butylbenzene N.D. 1. 5 ug/l 102 72-120 <br /> p-Isopropyltoluene N.D. 1. 5 ug/l 102 72-118 I <br /> 1,3-Dichlorobenzene N.D. 1. 5 ug/l 98 81-114 <br /> 1,4-Dichlorobenzene N.D. 1. 5 ug/l 100 84-116 <br /> n-Butylbenzene N.D. 1. 5 ug/l 99 75-120 <br /> 1,2-Dichlorobenzene N.D. 1. 5 ug/l 97 81-112 <br /> 1,2-Dibromo-3-chloropropane N.D. 2. 5 ug/l 93 65-121 I <br /> 1,2,4-Trichlorobenzene N.D. 1. 5 ug/l 97 65-114 <br /> Hexachlorobutadiene N.D. 2. 5 ug/l 91 62-119 <br /> Naphthalene N.D. 1. 5 ug/l 93 61-116 <br /> 1,2,3-Trichlorobenzene N.D. 1. 5 ug/l 90 67-114 <br /> Acetone N.D. 6. 20 ug/l 138 40-200 I <br /> Carbon Disulfide N.D. 1. 5 ug/l 93 69-119 <br /> 2-Butanone N.D. 3. 10 ug/l 112 63-157 <br /> trans-1,3-Dichloropropene N.D. 1. 5 ug/l 98 79-114 <br /> cis-1,3-Dichloropropene N.D. 1. 5 ug/l 103 78-114 <br /> 4-Methyl-2-pentanone N.D. 3. 10 ug/l 101 63-126 <br /> 2-Hexanone N.D. 3. 10 ug/l 102 61-140 <br /> 2-Chloroethyl Vinyl Ether N.D. 2. 10 ug/l 103 51-142 <br /> Freon 113 N.D. 2. 10 ug/l 99 66-125 <br /> Sample Matrix Quality Control I <br /> Unspiked (UNSPK) = the sample used in conjunction with the matrix spike <br /> Background (BKG) = the sample used in conjunction with the duplicate <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD I <br /> Analysis Name %RHC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 09013A07A Sample number(s) 5573128-5573140 UNSPK: P573198 <br /> TPH-GRO N. CA water C6-C12 118 a 63-154 <br /> Batch number: 09013A20A Sample number(s) 5573113-5573125,5573127 UNSPK: P572944 <br /> TPH-GRO N. CA water C6-C12 118 63-154 <br /> Batch number: N090122AA Sample number(s) : 5573113-5573114,5573117-5573125,5573127-5573130,5573132- I <br /> 5573133 UNSPK: 5573125 <br /> Ethanol 53 46 32-164 13 30 <br /> *-Outside of specification <br /> **-This limit was used in the evaluation of the final result for the blank I <br /> (1)The result for one or both determinations was less than five times the LOQ. <br /> (2)The unspiked result was more than four times the spike added. <br /> I <br /> I <br />