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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 1 of 2 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1084074 <br /> Reported: 04/15/08 at 08:15 AM <br /> Matrix QC may not be reported if site-specific QC samples were not <br /> submitted. In these situations, to demonstrate precision and accuracy at <br /> a batch level, a LCS/LCSD was performed, unless otherwise specified in the <br /> method. <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result Procrram Units %REC %REC Limits RPD RPD Max <br /> RL <br /> Batch number: 08092021202A Sample number(s) : 5318521 <br /> Total Dissolved Solids N.D. 9700. ug/l 93 80-120 <br /> Batchnumber: 08092196102A Sample number(s) : 5318521 <br /> Chloride N.D. 200. ug/l 105 90-110 <br /> Sulfate N.D. 300. ug/l 101 89-110 <br /> Nitrate Nitrogen N.D. 50. ug/l 103 90-110 <br /> Nitrite Nitrogen N.D. 80. ug/l 106 90-110 <br /> Batch number: 08094022101A Sample number(s) : 5318521 <br /> Ammonia Nitrogen N.D. 200. ug/l 95 96 91-100 1 1 <br /> Batch number: 08094110101A Sample number(s) : 5318521 <br /> Total Phosphorus as PO4 water N.D. 250. ug/l 95 90-110 <br /> Batch number: 08095020202A Sample number(s) : 5318521 <br /> Alkalinity to pH 4.5 N.D. 460. ug/l as 99 98-103 <br /> CaCO3 <br /> Batch number: 08095108101A Sample number(s) : 5318521 <br /> Kjeldahl Nitrogen N.D. 500. ug/l 103 90-110 <br /> Batch number: 080951848003 Sample number(s) : 5318521 <br /> Calcium N.D. 63.2 ug/l 101 90-112 <br /> Iron N.D. 52.2 ug/l 99 90-112 <br /> Magnesium 44.1 13.5 ug/l 99 89-110 <br /> Potassium N.D. 50.3 ug/l 114 88-119 <br /> Sodium 778. 433. ug/l 112 80-120 <br /> Manganese N.D. .84 ug/l 105 90-110 <br /> Boron N.D. 9.4 ug/l 105 90-110 <br /> Batch number: 08098028001A Sample number(s) : 5318521 <br /> Specific Conductance N.D. 1.7 umhos/c 102 98-106 <br /> m <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: 08092021202A Sample number(s) : 5318521 UNSPK: P315724 EKG: P313515 <br /> Total Dissolved Solids 95 93 54-143 1 12 1,450,000. 1,440,000. 1 9 <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 />