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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> M c C a m p b e I l Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" http://www.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: Kirkwood Meadows Public Untility District WorkOrder: 2604713 <br /> Date Prepared: 04/10/2026 BatchID: 339405 <br /> Date Analyzed: 04/12/2026-04/13/2026 Extraction Method: SW5030B <br /> Instrument: GC45,GC49 Analytical Method: SW8260D <br /> Matrix: Soil Unit: mg/kg <br /> Project: Kirkwood WWTP Sample ID: MB/LCS/LCSD-339405 <br /> QC Summary Report for SW8260D <br /> Analyte MB MDL RL SPK MB IS/SS MB IS/SS <br /> Result Val %REC Limits <br /> Acetone ND 0.12 0.20 <br /> tert-Amyl methyl ether(TAME) ND 0.0012 0.0050 - <br /> Benzene ND 0.00095 0.0050 - <br /> Bromobenzene ND 0.0012 0.0050 - <br /> Bromochloromethane ND 0.0011 0.0050 - <br /> Bromodichloromethane ND 0.00023 0.0050 - <br /> Bromoform ND 0.0038 0.0050 - <br /> Bromomethane ND 0.0018 0.0050 - <br /> 2-Butanone(MEK) ND 0.040 0.10 - <br /> t-Butyl alcohol(TBA) ND 0.024 0.050 - <br /> n-Butyl benzene ND 0.0016 0.0050 <br /> sec-Butyl benzene ND 0.0018 0.0050 - <br /> tert-Butyl benzene ND 0.0021 0.0050 - - <br /> Carbon Disulfide ND 0.0011 0.0050 - - <br /> Carbon Tetrachloride ND 0.00017 0.0050 - - <br /> Chlorobenzene ND 0.0012 0.0050 - - <br /> Chloroethane ND 0.0017 0.0050 - - <br /> Chloroform ND 0.00032 0.0050 - - <br /> Chloromethane ND 0.0017 0.0050 - - <br /> 2-Chlorotoluene ND 0.0016 0.0050 - - <br /> 4-Chlorotoluene ND 0.0013 0.0050 - - <br /> Dibromochloromethane ND 0.00040 0.0050 - - <br /> 1,2-Dibromo-3-chloropropane ND 0.00048 0.00050 - - <br /> 1,2-Dibromoethane(EDB) ND 0.00013 0.00025 - - <br /> Dibromomethane ND 0.0012 0.0050 - - <br /> 1,2-Dichlorobenzene ND 0.0017 0.0050 - - <br /> 1,3-Dichlorobenzene ND 0.0015 0.0050 - - <br /> 1,4-Dichlorobenzene ND 0.0015 0.0050 - - <br /> Dichlorodifluoromethane ND 0.00063 0.0050 - - <br /> 1,1-Dichloroethane ND 0.0015 0.0050 - - <br /> 1,2-Dichloroethane(1,2-DCA) ND 0.000070 0.00010 - - <br /> 1,1-Dichloroethene ND 0.00011 0.0050 - <br /> cis-1,2-Dichloroethene ND 0.0012 0.0050 - <br /> trans-1,2-Dichloroethene ND 0.0012 0.0050 - <br /> 1,2-Dichloropropane ND 0.0013 0.0050 - <br /> 1,3-Dichloropropane ND 0.00088 0.0050 - <br /> 2,2-Dichloropropane ND 0.0019 0.0050 - <br /> 1,1-Dichloropropene ND 0.0018 0.0050 - <br /> (Cont.) <br /> CA ELAP 1644.ORELAP(NELAP)4033 <br /> Page 13 of 36 <br />