ARCHIVED REPORTS_2020 ADDITIONAL SITE ASSESS RPT

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Laboratory Data Caltest Analytical Laboratory Carol Battaglia 1885 North Kelly Road Napa, CA 94558 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 06/30/2020 1034` 878886 SUBCONTRACT PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 07/01/20 1259138 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 07/02/20 21:12 1258786 07/01/20 1259138 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 07/02/20 21:12 1258786 07/01/20 1259138 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 07/02/20 21:12 1258786 07/01/20 1259138 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 07/02/20 21:12 1258786 07/01/20 1259138 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 07/02/20 21:12 1258786 07/01/20 1259138 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 07/02/20 21:12 1258786 07/01/20 1259138 13C2-PFDA %(EPA 537.1)1107 07/02/20 21:12 1258786 07/01/20 1259138 13C2-PFHxA %(EPA 537.1)1108 07/02/20 21:12 1258786 07/01/20 1259138 13C2-PFOA– IS#1 %(EPA 537.1)188 07/02/20 21:12 1258786 07/01/20 1259138 13C3-HFPO-DA %(EPA 537.1)1100 07/02/20 21:12 1258786 07/01/20 1259138 13C4-PFOS– IS#2 %(EPA 537.1)186 07/02/20 21:12 1258786 07/01/20 1259138 d3-NMeFOSAA %(EPA 537.1)195 07/02/20 21:12 1258786 07/01/20 1259138 d5-NEtFOSAA %(EPA 537.1)199 07/02/20 21:12 1258786 B78 (202006300070)Sampled on 06/24/2020 1350 V060910004Variable ID: EPA 537.1 - EPA Method 537.1 07/02/20 1259764 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.050 10ND 07/06/20 18:42 1259068 07/02/20 1259764 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.020 100.024 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.020 100.098 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 07/02/20 1259764 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.020 10ND 07/06/20 18:42 1259068 Data Report - Page 4 of 6 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 12 of 24 pages