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COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc Service Request: P0700704 <br />Project: Foothill Landfill, San Joaquin County (New Wells)/124591 Date Extracted: 08/06/2007 <br />Sample Matrix: Water Date Analyzed: 08/14/2007 - <br />08/22/2007 <br />Lab Control Spike/Duplicate Lab Control Spike Summary <br />Ll <br />n <br />L1 <br />Results flagged with an asterisk (*) indicate values outside control criteria. <br />Percent recoveries and relative percent differences (RPD) aro dctennined by the software using values in the calculation which have not been rounded. <br />109 000,19. <br />Printed: 08/30/2007 14:43:03 Form 3C - Organic Page 2 of 2 <br />u:\Stealth\Crystal.rpt\Forrn3DLC.rpt SuperSa Reference: RR76030 <br />'extraction Method: EPA 3520C <br />Analysis Method: 8270C <br />Analyte Name <br />Semi -Volatile Organic Compounds by GC/MS <br />Lab Control Sample Duplicate Lab Control Sample <br />KWG0708458-2 KWG0708458-3 <br />Lab Control Spike Duplicate Lab Control Spike <br />Result Expected °/aRec Result Expected %Rec <br />Units: ug/L <br />Basis: NA <br />Level: Low <br />Extraction Lot: KWG0708458 <br />a <br />/altec RPD <br />Limits RPD Limit <br />2-Methyl-4,6-dinitrophenol <br />86.3 <br />100 <br />86 <br />101 <br />100 <br />101 <br />36-134 <br />16 <br />30 <br />N-Nitrosodiphenylamine <br />76.8 <br />100 <br />77 <br />87.0 <br />100 <br />87 <br />45-127 <br />12 <br />30 <br />443romophenyl Phenyl Ether <br />90.6 <br />100 <br />91 <br />88.6 <br />100 <br />89 <br />54-117 <br />2 <br />30 <br />Hexachlorobenzene <br />87.8 <br />100 <br />88 <br />86.7 <br />100 <br />87 <br />53-119 <br />1 <br />30 <br />Pentachlorophenol <br />88.8 <br />100 <br />89 <br />93.2 <br />100 <br />93 <br />37-123 <br />5 <br />30 <br />Phenanthrene <br />86.2 <br />100 <br />86 <br />87.2 <br />100 <br />87 <br />55-114 <br />1 <br />30 <br />Anthracene <br />86.2 <br />100 <br />86 <br />89.4 <br />100 <br />89 <br />52-116 <br />4 <br />30 <br />Di -n -butyl Phthalate <br />105 <br />100 <br />105 <br />107 <br />100 <br />1.07 <br />55-127 <br />2 <br />30 <br />Fluoranthene <br />97.2 <br />100 <br />97 <br />89.9 <br />100 <br />90 <br />53-121 <br />8 <br />30 <br />Pvrene <br />81.3 <br />100 <br />81 <br />84.1 <br />100 <br />84 <br />54-1.17 <br />3 <br />30 <br />Butyl Benzyl Phthalate <br />85.2 <br />100 <br />85 <br />86.3 <br />100 <br />86 <br />57-121 <br />1 <br />30 <br />3,3'-Dichlorobenzidine <br />95.3 <br />100 <br />95 <br />94.9 <br />100 <br />95 <br />17-122 <br />0 <br />30 <br />Benz(a)anthracene <br />87.2 <br />100 <br />87 <br />89.6 <br />100 <br />90 <br />58-120 <br />3 <br />30 <br />Chrysene <br />85.3 <br />100 <br />85 <br />87.0 <br />100 <br />87 <br />58-117 <br />2 <br />30 <br />Bis(2-ethylhexyl) Phthalate <br />81.4 <br />100 <br />81 <br />82.1 <br />100 <br />82 <br />55-127 <br />1 <br />30 <br />Di-n-octyl Phthalate <br />90.6 <br />100 <br />91 <br />93.9 <br />100 <br />94 <br />52-129 <br />4 <br />30 <br />Benzo(b)fluoranthene <br />89.5 <br />100 <br />89 <br />91.5 <br />100 <br />91 <br />54-1.22 <br />2 <br />30 <br />Benzo(k)fluoranthene <br />89.3 <br />100 <br />89 <br />89.0 <br />100 <br />89 <br />54-123 <br />0 <br />30 <br />Benzo(a)pyrene <br />90.5 <br />100 <br />90 <br />91.8 <br />100 <br />92 <br />51-120 <br />1 <br />30 <br />Indeno(1,2,3-cd)pyrene <br />96.7 <br />100 <br />97 <br />93.4 <br />100 <br />93 <br />53-124 <br />3 <br />30 <br />Dibenz(a,h)anthracene <br />92.8 <br />100 <br />93 <br />89.0 <br />100 <br />89 <br />53-127 <br />4 <br />30 <br />Benzo(g,h,i)perylene <br />92.1 <br />100 <br />92 <br />92.8 <br />100 <br />93 <br />52-124 <br />1 <br />30 <br />2,3,4,6-Tetrachlorophenol <br />88.0 <br />100 <br />88 <br />97.2 <br />100 <br />97 <br />49-138 <br />10 <br />30 <br />Ll <br />n <br />L1 <br />Results flagged with an asterisk (*) indicate values outside control criteria. <br />Percent recoveries and relative percent differences (RPD) aro dctennined by the software using values in the calculation which have not been rounded. <br />109 000,19. <br />Printed: 08/30/2007 14:43:03 Form 3C - Organic Page 2 of 2 <br />u:\Stealth\Crystal.rpt\Forrn3DLC.rpt SuperSa Reference: RR76030 <br />