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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.larcasterIabs.com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1001992 <br /> Reported: 09/01/06 at 11:26 AM <br /> Sample Matrix Quality Control <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 <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 06230WABO26 Sample number(s) : 4843973-4843978 UNSPK: 4843974 <br /> Naphthalene 109* 111* 74-108 1 30 <br /> Acenaphthylene 102 96 83-109 6 30 <br /> Acenaphthene 105 99 86-106 6 30 <br /> Fluorene 105 104 77-115 0 30 <br /> Phenanthrene 96 92 56-132 5 30 <br /> Anthracene 89 81 34-130 9 30 <br /> Fluoranthene 106 100 57-129 6 30 <br /> Pyrene 121 113 63-125 7 30 <br /> Benzo(a)anthracene 112 107 70-114 4 30 <br /> Chrysene 112 109 67-117 3 30 <br /> Benzo(b)fluoranthene 105 97 45-140 8 30 <br /> Benzo(k)fluoranthene 101 94 52-126 7 30 <br /> Benzo(a)pyrene 97 81 1-149 18 30 <br /> Indeno(1,2,3-cd)pyrene 125* 113 60-116 10 30 <br /> Dibenz(a,h)anthracene 122* 115 52-119 6 30 <br /> Benzo(g,h,i)perylene 122* 112 47-118 9 30 <br /> Batch number: 062340009A Sample number(s) : 4843973-4843978 UNSPK: 4843974 <br /> TPH-DRO (C10-C25) Water 80 89 59-128 12 20 <br /> Batch number: 062400032A Sample number(s) : 4843974-4843977 UNSPK: 4843974 <br /> TPH-DRO(C10-C25)Water w/ SiGel 67 79 59-128 23* 20 <br /> Surrogate Quality Control <br /> Surrogate recoveries which are outside of the QC window are confirmed <br /> unless attributed to dilution or otherwise noted on the Analysis Report. <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 06230A53A <br /> Trifluorotoluene-F Trifluorotoluene-P <br /> 4843972 92 <br /> 4843973 83 92 <br /> 4843974 82 92 <br /> 4843975 86 94 <br /> 4843976 84 93 <br /> 4843977 82 91 <br /> 4843978 82 90 <br /> Blank 81 91 <br /> LCS 100 92 <br /> LCSD 99 91 <br /> MS 98 91 <br /> MSD 101 92 <br /> Limits: 63-135 69-129 <br /> Analysis Name: Selected SVOAs by 8270 SIM <br /> Batch number: 06230WABO26 <br /> *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ. <br /> (2) The background result was more than four times the spike added. <br />