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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 5 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1079257 <br /> Reported: 03/14/08 at 12:09 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result Program Units %REC %REC Limits RPD RPD Max <br /> RL <br /> Alkalinity to pH 4.5 N.D. 460. ug/1 as 100 98-103 <br /> CaCO3 <br /> Batch number: 08065022101A Sample number(s) : 5289748 <br /> Ammonia Nitrogen N.D. 200. ug/1 95 95 91-100 0 1 <br /> Batch number: 08067028001A Sample number(s) : 5289748 <br /> Specific Conductance N.D. 1.7 umhos/c 101 98-106 <br /> m <br /> Batch number: 080680004A Sample number(s) : 5289747-5289749 <br /> TPH-DRO(C10-C25)Water w/ SiGel N.D. 29. ug/1 81 45-114 <br /> Batch number: C080661AA Sample number(s) : 5289741-5289749 <br /> Benzene N.D. 0.1 ug/1 99 87-111 <br /> Toluene N.D. 1. ug/1 103 89-113 <br /> Ethylbenzene N.D. 1. ug/1 102 88-114 <br /> Xylene (Total) N.D. 1. ug/1 104 88-115 <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: 08059021201A Sample number(s) : 5289748 UNSPK: P288769 BKG: P288769 <br /> Total Dissolved Solids 99 103 54-143 2 12 1,190,000. 1,230,000. 4 9 <br /> Batch number: 08059196101A Sample number(s) : 5289748 UNSPK: 5289748 BKG: 5289748 <br /> Chloride 96 90-110 266,000. 262,000. 1 20 <br /> Sulfate 98 90-110 152,000. 150,000. 1 20 <br /> Nitrate Nitrogen 79* 90-110 8,600. 8,600. 0 20 <br /> Nitrite Nitrogen 113* 90-110 N.D. N.D. 0 (1) 20 <br /> Batch number: 080610008A Sample number(s) : 5289742-5289749 UNSPK: 5289744 <br /> TPH-DRO (C10-C25) Water 81 83 59-128 2 20 <br /> Batch number: 08061WAA026 Sample number(s) : 5289742-5289749 UNSPK: 5289744 <br /> Naphthalene 70 76 70-130 8 30 <br /> Acenaphthylene 100 102 70-130 2 30 <br /> Acenaphthene 85 90 70-130 6 30 <br /> Fluorene 98 98 70-130 0 30 <br /> Phenanthrene 99 101 70-130 2 30 <br /> Anthracene 35* 39* 70-130 12 30 <br /> Fluoranthene 92 101 70-130 9 30 <br /> Pyrene 70 71 70-130 1 30 <br /> Benzo(a)anthracene 73 78 70-130 6 30 <br /> Chrysene 103 104 70-130 1 30 <br /> Benzo(b)fluoranthene 103 96 70-130 7 30 <br /> Benzo(k)fluoranthene 87 90 70-130 4 30 <br /> Benzo(a)pyrene 24* 25* 70-130 3 30 <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 />