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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 LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Acenaphthene 0.067 0.065 0.062 107 105 60-130 2.34 30 <br /> Acenaphthylene 0.066 0.064 0.062 105 103 60-130 1.64 30 <br /> Acetochlor 1.4 1.6 1.25 110 125 60-130 13.2 30 <br /> Anthracene 0.068 0.075 0.062 109 120 60-130 9.85 30 <br /> Benzidine 4.3 4.6 6.25 68 74 20-130 7.81 30 <br /> Benzo(a)anthracene 0.060 0.065 0.062 96 104 70-130 8.28 30 <br /> Benzo(a)pyrene 0.063 0.069 0.062 101 110 70-130 8.50 30 <br /> Benzo(b)fluoranthene 0.066 0.071 0.062 106 113 60-130 6.35 30 <br /> Benzo(g,h,i)perylene 0.058 0.062 0.062 92 99 70-130 6.63 30 <br /> Benzo(k)fluoranthene 0.063 0.069 0.062 101 ill 70-130 9.20 30 <br /> Benzoic Acid 2.9 3.4 6.25 47 54 15-130 14.3 30 <br /> Benzyl Alcohol 5.6 5.9 6.25 89 95 70-130 6.11 30 <br /> 1,1-Biphenyl 0.15 0.15 0.12 123 121 60-130 1.77 30 <br /> Bis(2-chloroethoxy)Methane 1.1 1.3 1.25 91 102 70-130 11.2 30 <br /> Bis(2-chloroethyl)Ether 0.055 0.059 0.062 88 94 60-130 7.50 30 <br /> Bis(2-chloroisopropyl)Ether 0.061 0.068 0.062 98 108 60-130 10.0 30 <br /> Bis(2-ethylhexyl)Adipate 1.3 1.4 1.25 104 112 60-130 7.28 30 <br /> Bis(2-ethylhexyl)Phthalate 0.061 0.067 0.062 98 108 60-130 9.15 30 <br /> 4-Bromophenyl Phenyl Ether 1.3 1.5 1.25 106 117 60-130 9.94 30 <br /> Butylbenzyl Phthalate 0.062 0.068 0.062 100 109 60-130 8.91 30 <br /> 4-Chloro-3-methylphenol 1.2 1.4 1.25 98 112 70-130 13.6 30 <br /> 4-Chloroaniline 0.053 0.059 0.062 85 95 40-130 11.2 30 <br /> 2-Chloronaphthalene 1.3 1.3 1.25 103 104 60-130 0.612 30 <br /> 2-Chlorophenol 0.059 0.062 0.062 94 100 60-130 5.79 30 <br /> 4-Chlorophenyl Phenyl Ether 1.2 1.2 1.25 98 96 70-130 2.69 30 <br /> Chrysene 0.066 0.073 0.062 105 117 70-130 10.4 30 <br /> Dibenzo(a,h)anthracene 0.058 0.061 0.062 92 98 70-130 6.40 30 <br /> Dibenzofuran 0.057 0.057 0.062 91 92 60-130 0.312 30 <br /> Di-n-butyl Phthalate 0.064 0.071 0.062 103 114 60-130 10.5 30 <br /> 1,2-Dichlorobenzene 1.1 1.2 1.25 90 95 60-130 5.43 30 <br /> 1,3-Dichlorobenzene 1.1 1.2 1.25 90 96 60-130 6.77 30 <br /> 1,4-Dichlorobenzene 1.1 1.2 1.25 91 97 60-130 5.91 30 <br /> 3,3-Dichlorobenzidine 0.046 0.050 0.062 74 79 40-130 7.60 30 <br /> 2,4-Dichlorophenol 0.058 0.065 0.062 93 104 60-130 11.1 30 <br /> Diethyl Phthalate 0.061 0.059 0.062 98 94 70-130 3.74 30 <br /> 2,4-Di methyl phenol 1.3 1.4 1.25 105 115 70-130 9.08 30 <br /> Dimethyl Phthalate 0.061 0.060 0.062 98 96 70-130 2.08 30 <br /> 4,6-Dinitro-2-methylphenol 5.4 6.0 6.25 87 96 20-130 10.7 30 <br /> (Cont.) <br /> CA ELAP 1644.ORELAP(NELAP)4033 <br /> Page 22 of 36 <br />