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?CENVIRONMENTAL
<br /> COA
<br /> ANALYTICAL CHEMISTS
<br /> January 21, 2005 Lab ID STK438873
<br />' Customer 3014996
<br /> Ground Zero Analysis
<br /> 1714 Main Street
<br /> IEscalon, CA 95320
<br /> Laboratory Report
<br />' Introduction: This report package contains total of 13 pages divided into three sections
<br />' Case Narrative (2 Pages) An overview of the work performed at FOL
<br /> Chemical Results (2 Pages) Results for each sample submitted
<br /> Quality Control (9 Pages) Supporting Quality Control (QC) results
<br />' This report package pertains to the following sample
<br /> Date Date FGL Lab
<br />' Sample Description Sampled Received Sample ID # Matrix
<br /> Koval 4815 12/23/2004 12/23/2004 STK438873-01 DW
<br /> Sampling and Receipt Information: The sample was received, prepared and analyzed within
<br /> the method specified holding times All samples were received on ice All samples were
<br /> checked for pH if acid or base preservation required (except for VOAs) For details of sample
<br /> receipt information, please see the attached Chain of Custody and Condition Upon Receipt
<br /> Forms
<br /> Quality Control: All samples were prepared and analyzed according to the following tables
<br /> Organic QC
<br /> 5242 12/30/2004A209 All preparation quality controls are within established criteria, except
<br /> The following note applies to 1,1,1,2-Tetrachloroethane, i,1-Dichloroethane,
<br /> 1,1-Dichloroethylene, 1,2-Dichloroethane, 1,2-Dichloropropane, Dibromomethane,
<br /> Bromodichloromethane, Bromochloromethane, Benzene,
<br /> Chloroform,Dichloromethane,trans-l,3-Dtchloropropene, trans-1,2-Dichloroethylene,
<br /> cis-1,2-Dichloroethylene, Tert-amyl-methyl Ether (TAME)
<br /> I 410 Relative Percent Difference (RPD) not within Maximum Allowable Value
<br /> (MAV) Data was accepted based on the LCS or CCV recovery
<br /> The following note applies to 1,1,1,2-Tetrachloroethane, Bromodichloromethane,
<br />' Bromochloromethanc, Chloroform, Trichloroethylene, Tetrachloroethylene,
<br /> Chlorobenzene, Naphthalene, Toluene, Xylenes m,p
<br /> 435 Sample matrix may be affecting this analyte Data was accepted based on the
<br />' LCS or CCV recovery
<br /> 12/30/2004 A - GM205 All analysis quality controls are within established criteria, except
<br /> The tollowing note applies to 1,1,1,2-Tetrachloroethane, Chloroberizene,
<br /> Chloroethane, Dichlorodifluoromethane, Ethyl Benzene, Hexachlorobutadiene,
<br /> lsopropylbenzene, Naphthalene, Tetrachloroethylene, Toluene, Xylenes
<br /> m,p,p-lsopropyItoluene,tert-Butylbenzene
<br /> I
<br /> Corporate Offices&Laboratory Office&Laboratory Field Office
<br /> PO Box 2721 853 Corporation Street 2500 Stagecoach Road Visalia California
<br />' Santa Paula CA 93061 0272 Stockton CA 95215 TEL (559)734 9473
<br /> TEL (805)392 2000 TEL (209)942 0181 FAX (559)734 8435
<br /> FAX (805)525 4172 FAX (209)942 0423 Mobile (559)737 2399
<br /> CA NELAPCertifiication No 0111 OCA CA FLAP Certification No 1563
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