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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> _ M c C a m p b e I I 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: 339413 <br /> Date Analyzed: 04/10/2026 Extraction Method: SW3550B <br /> Instrument: GC48 Analytical Method: SW8270E <br /> Matrix: Soil Unit: mg/Kg <br /> Project: Kirkwood WWTP Sample ID: MB/LCS/LCSD-339413 <br /> QC Summary Report for SW8270E <br /> Analyte MB MDL RL SPK MB IS/SS MB IS/SS <br /> Result Val %REC Limits <br /> 2,4-Dinitrophenol ND 0.096 0.25 <br /> 2,4-Dinitrotoluene ND 0.0054 0.012 <br /> 2,6-Dichlorophenol ND 0.0027 0.012 - <br /> 2,6-Dinitrotoluene ND 0.0051 0.012 - <br /> Di-n-octyl Phthalate ND 0.088 0.62 - <br /> 1,2-Diphenylhydrazine ND 0.069 0.25 - <br /> Fluoranthene ND 0.00053 0.0025 - <br /> Fluorene ND 0.00089 0.0025 - <br /> Hexachlorobenzene ND 0.00034 0.0013 - <br /> Hexachlorobutadiene ND 0.00020 0.0013 - <br /> Hexachlorocyclopentadiene ND 0.48 1.2 <br /> Hexachloroethane ND 0.00071 0.0025 <br /> Indeno(1,2,3-cd)pyrene ND 0.0017 0.0062 - - <br /> Isophorone ND 0.062 0.25 - - <br /> 1-Methyl naphthalene ND 0.00031 0.0013 -2-Methyl naphthalene ND 0.00031 0.0013 - - <br /> 2-Methylphenol(o-Cresol) ND 0.049 0.25 - - <br /> 3&4-Methylphenol(m,p-Cresol) ND 0.049 0.25 - - <br /> Naphthalene ND 0.00073 0.0025 - - <br /> 2-Nitroaniline ND 0.41 1.2 - - <br /> 3-Nitroaniline ND 0.76 2.5 - - <br /> 4-Nitroaniline ND 0.42 1.2 - - <br /> Nitrobenzene ND 0.074 0.25 - - <br /> 2-Nitrophenol ND 0.45 1.2 - - <br /> 4-Nitrophenol ND 0.25 1.2 - - <br /> N-Nitrosodimethylamine ND 0.050 0.25 - - <br /> N-Nitrosodi-n-propylamine ND 0.071 0.25 - - <br /> N-Nitrosodiphenylamine ND 0.054 0.25 - - <br /> Pentachlorophenol ND 0.019 0.062 - - <br /> Phenanthrene ND 0.00044 0.0013 - <br /> Phenol ND 0.0049 0.010 - <br /> Pyrene ND 0.00052 0.0013 - <br /> Pyridine ND 0.071 0.25 - <br /> 2,3,4,6-Tetrachlorophenol ND 0.079 0.25 - <br /> 1,2,4-Trichlorobenzene ND 0.059 0.25 - <br /> 2,4,5-Trichlorophenol ND 0.0019 0.0062 - <br /> 2,4,6-Trichlorophenol ND 0.0019 0.0062 - <br /> (Cont.) <br /> CA ELAP 1644.ORELAP(NELAP)4033 <br /> Page 20 of 36 <br />