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1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />M c C a m p b e I l Analytical , I n c . Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br />W "When Quality Counts" http://www.mccampbell.com/ E-mail: main@mccampbelf.com <br />Acetone <br />tert-Amyl methyl ether (TAM <br />Benzene <br />Bromobenzene <br />Bromochlorom ethane <br />Brom odichlorom ethane <br />Bromoform <br />Bromomethane <br />2-Butanone (MEK) <br />t -Butyl alcohol (TBA) <br />ND 6.3 40 <br />ND 0.13 0.50 <br />ND 0.12 0.20 <br />ND 0.13 0.50 <br />ND 0.11 0.50 <br />ND 0.025 0.050 <br />ND <br />ND <br />ND <br />ND <br />0.31 0.50 - <br />0.18 0.50 - <br />1.5 5.0 <br />2.5 5.0 - - <br />n -Butyl benzene ND 0.23 0.50 - - <br />sec -Butyl benzene ND 0.17 0.50 - - <br />tert-Butyl benzene ND <br />Carbon Disulfide ND <br />Carbon Tetrachloride ND <br />Chlorobenzene ND <br />Chloroethane ND <br />Chloroform ND <br />Chloromethane ND <br />2-Chlorotoluene <br />4-Chlorotoluene <br />Dibromochloromethane <br />1,2-Dibromo-3-chloropropane <br />1,2-Dibromoethane (EDB) <br />Dibromomethane <br />1,2 -Dichlorobenzene <br />1,3 -Dichlorobenzene <br />1,4 -Dichlorobenzene <br />13 <br />ZZ <br />ZZ <br />ZZ <br />ZE <br />ZE <br />ZZ <br />ZE <br />ZZ <br />n 47 n C^ <br />0.11 0.50 - - <br />0.20 0.50 - - <br />0.091 0.10 - - <br />0.28 0.50 - - <br />0.23 <br />0.50 - - <br />Quality Control Report <br />0.50 <br />Client: <br />AdvancedGeo, Inc. <br />WorkOrder: <br />2209857 <br />Date Prepared: <br />09/23/2022 <br />BatchID: <br />254625 <br />Date Analyzed: <br />09/23/2022 <br />Extraction Method: <br />SW5030B <br />Instrument: <br />GC45 <br />Analytical Method: <br />SW8260B <br />Matrix: <br />Water <br />Unit: <br />gg/L <br />Project: <br />Azevedo Property <br />Sample ID: <br />MB/LCS/LCSD-254625 <br />QC Summary Report for SW8260B <br />Analyte <br />MB MDL RL <br />SPK MB SS MB SS <br />Result <br />Val %REC Limits <br />Acetone <br />tert-Amyl methyl ether (TAM <br />Benzene <br />Bromobenzene <br />Bromochlorom ethane <br />Brom odichlorom ethane <br />Bromoform <br />Bromomethane <br />2-Butanone (MEK) <br />t -Butyl alcohol (TBA) <br />ND 6.3 40 <br />ND 0.13 0.50 <br />ND 0.12 0.20 <br />ND 0.13 0.50 <br />ND 0.11 0.50 <br />ND 0.025 0.050 <br />ND <br />ND <br />ND <br />ND <br />0.31 0.50 - <br />0.18 0.50 - <br />1.5 5.0 <br />2.5 5.0 - - <br />n -Butyl benzene ND 0.23 0.50 - - <br />sec -Butyl benzene ND 0.17 0.50 - - <br />tert-Butyl benzene ND <br />Carbon Disulfide ND <br />Carbon Tetrachloride ND <br />Chlorobenzene ND <br />Chloroethane ND <br />Chloroform ND <br />Chloromethane ND <br />2-Chlorotoluene <br />4-Chlorotoluene <br />Dibromochloromethane <br />1,2-Dibromo-3-chloropropane <br />1,2-Dibromoethane (EDB) <br />Dibromomethane <br />1,2 -Dichlorobenzene <br />1,3 -Dichlorobenzene <br />1,4 -Dichlorobenzene <br />13 <br />ZZ <br />ZZ <br />ZZ <br />ZE <br />ZE <br />ZZ <br />ZE <br />ZZ <br />n 47 n C^ <br />0.11 0.50 - - <br />0.20 0.50 - - <br />0.091 0.10 - - <br />0.28 0.50 - - <br />0.23 <br />0.50 - - <br />0.12 <br />0.50 <br />0.026 <br />0.15 <br />0.010 <br />0.020 <br />0.021 <br />0.040 - - <br />0.12 <br />0.50 - - - <br />0.16 <br />0.50 - - - <br />0.12 <br />0.50 - - - <br />0.093 <br />0.50 - - - <br />Dichlorodifluoromethane ND 0.29 0.50 - - - <br />1,1-Dichloroethane ND 0.15 0.50 - - - <br />1,2-Dichloroethane (1,2 -DCA) ND 0.011 0.020 - - - <br />1,1-Dichloroethene <br />ND <br />cis-1,2-Dichloroethene <br />ND <br />trans-1,2-Dichloroethene <br />ND <br />1,2-Dichloropropane <br />ND <br />1,3-Dichloropropane <br />ND <br />1,1-Dichloropropene ND <br />cis- 1,3-Dichloropropene ND <br />(Cont.) <br />CA ELAP 1644 • NELAP 4033ORELAP <br />0.0094 <br />0.010 - - - <br />0.093 <br />0.50 - - - <br />0.11 <br />0.50 - - - <br />0.019 <br />0.20 - - -- - - <br />0.17 <br />0.50 - - - <br />0.085 <br />0.50 - - - <br />0.21 <br />0.50 - - - <br />Page 7 of 14 <br />