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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: 1022934 <br /> Reported: 02/08/07 at 11:27 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) : 4965594-4965595 <br /> TPH-DRO (C10-C25) Water 34. 29. ug/l 99 99 43-122 0 20 <br /> Batch number: 07025028002A Sample number(s) : 4965595 <br /> Specific Conductance N.D. 1.7 umhos/c 104 98-106 <br /> m <br /> Batchnumber: 07025196601B Sample number(s) : 4965595 <br /> Chloride N.D. 200. ug/l 99 90-110 <br /> Sulfate N.D. 300. ug/l 100 89-110 <br /> Nitrate Nitrogen N.D. 50. ug/l 100 90-110 <br /> Nitrite Nitrogen N.D. 80. ug/l 102 90-110 <br /> Batch number: 07026021201A Sample number(s) : 4965595 <br /> Total Dissolved Solids N.D. 9,700. ug/l 97 80-120 <br /> Batch number: 070261848001 Sample number(s) : 4965595 <br /> Calcium N.D. 104. ug/l 101 90-112 <br /> Iron N.D. 52.2 ug/l 101 90-112 <br /> Magnesium N.D. 32.2 ug/l 97 89-110 <br /> Potassium N.D. 50.3 ug/l 101 88-119 <br /> Sodium N.D. 433. ug/l 107 80-120 <br /> Manganese N.D. 0.36 ug/l 100 90-110 <br /> Boron N.D. 9.4 ug/l 98 90-110 <br /> Batch number: 07026WAE026 Sample number(s) : 4965594-4965595 <br /> Naphthalene N.D. 0.01 ug/l 95 94 70-111 1 30 <br /> Acenaphthylene N.D. 0.02 ug/l 92 92 75-110 0 30 <br /> Acenaphthene N.D. 0.01 ug/l 94 94 81-109 0 30 <br /> Fluorene N.D. 0.01 ug/l 94 95 75-115 0 30 <br /> Phenanthrene N.D. 0.01 ug/l 92 92 76-114 0 30 <br /> Anthracene N.D. 0.02 ug/l 85 86 67-113 1 30 <br /> Fluoranthene N.D. 0.01 ug/l 91 91 69-123 1 30 <br /> Pyrene N.D. 0.02 ug/l 96 95 76-114 0 30 <br /> Benzo(a)anthracene N.D. 0.02 ug/l 92 92 76-111 0 30 <br /> Chrysene N.D. 0.02 ug/l 94 94 76-112 0 30 <br /> Benzo(b)fluoranthene N.D. 0.02 ug/l 97 95 56-138 2 30 <br /> Benzo(k)fluoranthene N.D. 0.01 ug/l 102 103 68-124 1 30 <br /> Benzo(a)pyrene N.D. 0.02 ug/l 88 87 64-114 1 30 <br /> Indeno(1,2,3-cd)pyrene N.D. 0.02 ug/l 102 101 76-119 0 30 <br /> Dibenz(a,h)anthracene N.D. 0.02 ug/l 98 98 60-126 0 30 <br /> Benzo(g,h,i)perylene N.D. 0.02 ug/l 101 100 74-117 1 30 <br /> Batch number: 07030020201A Sample number(s) : 4965595 <br /> Alkalinity to pH 4.5 99 98-103 <br /> Batch number: 07030022101A Sample number(s) : 4965595 <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 />