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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 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1022750 <br /> Reported: 02/08/07 at 11:26 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 MDL Units %REC %REC Limits RPD RPD Max <br /> Batch number: 070240022A Sample number(s) : 4964677-4964680 <br /> TPH-DRO (C10-C25) Water 34. 29. ug/l 99 99 43-122 0 20 <br /> Batchnumber: 07024196101B Sample number(s) : 4964678 <br /> Chloride N.D. 200. ug/l 101 90-110 <br /> Sulfate N.D. 300. ug/l 100 89-110 <br /> Nitrate Nitrogen N.D. 50. ug/l 99 90-110 <br /> Nitrite Nitrogen N.D. 80. ug/l 97 90-110 <br /> Batch number: 07025021201A Sample number(s) : 4964678 <br /> Total Dissolved Solids N.D. 9,700. ug/l 90 80-120 <br /> Batch number: 07025022101A Sample number(s) : 4964678 <br /> Ammonia Nitrogen N.D. 200. ug/l 97 96 91-100 0 1 <br /> Batch number: 07025028001A Sample number(s) : 4964678 <br /> Specific Conductance N.D. 1.7 umhos/c 104 98-106 <br /> m <br /> Batch number: 07025108101A Sample number(s) : 4964678 <br /> Kjeldahl Nitrogen N.D. 500. ug/l 98 90-110 <br /> Batch number: 070251848001 Sample number(s) : 4964678 <br /> Calcium N.D. 104. ug/l 97 90-112 <br /> Iron N.D. 52.2 ug/l 96 90-112 <br /> Magnesium N.D. 32.2 ug/l 95 89-110 <br /> Potassium N.D. 50.3 ug/l 103 88-119 <br /> Sodium 519. 433. ug/l 108 80-120 <br /> Manganese N.D. 0.36 ug/l 97 90-110 <br /> Boron N.D. 9.4 ug/l 98 90-110 <br /> Batch number: 07025WAF026 Sample number(s) : 4964677-4964680 <br /> Naphthalene N.D. 0.01 ug/l 81 79 70-111 1 30 <br /> Acenaphthylene N.D. 0.02 ug/l 88 85 75-110 3 30 <br /> Acenaphthene N.D. 0.01 ug/l 87 86 81-109 2 30 <br /> Fluorene N.D. 0.01 ug/l 91 89 75-115 2 30 <br /> Phenanthrene N.D. 0.01 ug/l 91 89 76-114 2 30 <br /> Anthracene N.D. 0.02 ug/l 87 85 67-113 3 30 <br /> Fluoranthene N.D. 0.01 ug/l 91 89 69-123 2 30 <br /> Pyrene N.D. 0.02 ug/l 99 95 76-114 4 30 <br /> Benzo(a)anthracene N.D. 0.02 ug/l 91 89 76-111 3 30 <br /> Chrysene N.D. 0.02 ug/l 93 91 76-112 3 30 <br /> Benzo(b)fluoranthene N.D. 0.02 ug/l 101 99 56-138 1 30 <br /> Benzo(k)fluoranthene N.D. 0.01 ug/l 98 95 68-124 4 30 <br /> Benzo(a)pyrene N.D. 0.02 ug/l 93 89 64-114 5 30 <br /> Indeno(1,2,3-cd)pyrene N.D. 0.02 ug/l 101 100 76-119 2 30 <br /> Dibenz(a,h)anthracene N.D. 0.02 ug/l 99 97 60-126 2 30 <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 />