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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: 1075641 <br /> Reported: 02/22/08 at 09:12 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 /> Chrysene 93 96 70-130 4 30 <br /> Benzo(b)fluoranthene 93 98 70-130 7 30 <br /> Benzo(k)fluoranthene 91 96 70-130 7 30 <br /> Benzo(a)pyrene 46* 54* 70-130 18 30 <br /> Indeno(1,2,3-cd)pyrene 67* 74 70-130 10 30 <br /> Dibenz(a,h)anthracene 74 80 70-130 9 30 <br /> Benzo(g,h,i)perylene 54* 64* 70-130 17 30 <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-DRO (C10-C25) Water <br /> Batch number: 080330022A <br /> orthoterphenyl <br /> 5269571 95 <br /> 5269572 95 <br /> 5269573 89 <br /> 5269574 92 <br /> 5269575 79 <br /> 5269576 107 <br /> 5269577 100 <br /> 5269578 102 <br /> 5269579 94 <br /> Blank 95 <br /> LCS 82 <br /> MS 107 <br /> MSD 100 <br /> Limits: 45-114 <br /> Analysis Name: PAHs in Water by LVI GC/MS <br /> Batch number: 08033WAI026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5269571 114 114 114 <br /> 5269572 122 112 99 <br /> 5269573 128 124 92 <br /> 5269574 118 110 108 <br /> 5269575 112 110 106 <br /> 5269576 119 112 108 <br /> 5269577 120 112 109 <br /> 5269578 114 108 111 <br /> 5269579 134 102 121 <br /> Blank 107 116 109 <br /> LCS 113 112 106 <br /> MS 119 112 108 <br /> MSD 120 112 109 <br /> *-Outside of specification <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 />