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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.lancasterIabs.com <br /> Page 3 of 4 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgmt Co Group Number: 1171842 <br /> Reported: 12/07/09 at 08:17 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 %RBC %REC Limits RPD MAX Conc Conc RPD Max <br /> Kjeldahl Nitrogen 102 90-110 N.D. N.D. 0 (1) 20 <br /> Batch number: 09324110101B Sample number(s) 5842644 UNSPK: 5842644 BKG: 5842644 <br /> Total Phosphorus as PO4 water 91 90-110 N.D. N.D. 0 (1) 3 <br /> Batch number: 09324021202A Sample number(s) 5842644 UNSPK: P842212 BKG: P842212 <br /> Total Dissolved Solids 108 105 54-143 1 12 27,900,000 28,800,000 3 9 <br /> Batch number: 09328022101A Sample number(s) : 5842644 BKG: P843408 <br /> Ammonia Nitrogen 30,800 31,400 2 2 <br /> Batch number: 09328028001A Sample number(s) : 5842644 BKG: 5842644 <br /> Specific Conductance 3,570 3,570 0 1 <br /> Batch number: 09329020201A Sample number(s) 5842644 UNSPK: P847994 BKG: P847994 <br /> Alkalinity to pH 4.5 99 99 64-130 0 2 53,100 52,400 1 4 <br /> Alkalinity to pH 8.3 N.D. N.D. 0 (1) 4 <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: EPA SW846/8260 (water-25ml) #1 <br /> Batch number: G093281AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 5842644 97 93 95 90 <br /> 5842645 98 97 94 90 <br /> Blank 98 95 95 91 <br /> LCS 98 101 96 96 <br /> LCSD 98 94 96 94 <br /> MS 97 93 97 94 <br /> Limits: 77-114 74-113 77-110 78-110 <br /> Analysis Name: PAHs in Water by LVI GC/MS <br /> Batch number: 09324WABO26 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5842644 112 140 130 <br /> Blank 107 87 101 <br /> LCS 118 90 102 <br /> LCSD 104 96 100 <br /> Limits: 42-153 76-149 61-150 <br /> Analysis Name: TPH-DRO water C10-C25 <br /> Batch number: 093230023A <br /> Orthoterphenyl <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 />