OHA Drinking Water Services
OR41
PWS ID: 93727 ---- PAULINA ELEMENTARY CO UNIT
PFAS Sample Results

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Initial Monitoring
EP ID Entry point name Water
type		 Availability Frequency Schedule
begin		 Schedule
end		 First quarter or
First sample		 Second quarter or
Second sample		 Third
quarter		 Fourth
quarter
EP-A EP for WELL GW Permanent 2 samples 1/1/2023 10/15/2025 N/A N/A
For each active entry point served by groundwater, collect 2 consecutive samples within a 12-month period with samples collected 5 to 7 months apart.


Sample Summaries
For compliance? EP ID Entry point name Sample date # Detections # MCL
exceedances		 Sample ID
Yes EP-A EP for WELL 10/15/2025 0 0 2510192-01


Sample Results
For compliance? EP ID
Entry point name Sample date Received date Analyte
code		 Analyte abbreviation
 Analyte name
Result (ng/L)
MCL
(ng/L)		 MRL
(ng/L)		 Sample ID Lab ID Lab name Analysis method Method name TINWSF
ISN		 TSASAMPL
ISN		 TSASAR
ISN		 SelectDataSet SelectAnalyte SelectDetects SelectLabID SelectLabName SelectMethod SelectMethodName
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026096 Yes 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025886 Yes 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025921 Yes 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025851 Yes 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026061 Yes 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026026 Yes 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025991 Yes 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2827 NFDHA Nonafluoro-3,6-dioxaheptanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025676 Yes 2827 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2819 PFBA Perfluorobutanoic acid ND 5.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025956 Yes 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2801 PFBS Perfluorobutanesulfonic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026439 Yes 2801M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2807 PFDA Perfluorodecanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026229 Yes 2807 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2808 PFDoA Perfluorododecanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026197 Yes 2808 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025711 Yes 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2802 PFHpA Perfluoroheptanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026404 Yes 2802 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2829 PFHpS Perfluoroheptanesulfonic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025606 Yes 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2809 PFHxA Perfluorohexanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026164 Yes 2809 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2803 PFHxS Perfluorohexanesulfonic acid ND 10 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026369 Yes 2803M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025746 Yes 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025816 Yes 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2804 PFNA Perfluorononanoic acid ND 10 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026334 Yes 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2806 PFOA Perfluorooctanoic acid ND 4.0 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026264 Yes 2806M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026299 Yes 2805M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2824 PFPeA Perfluoropentanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025781 Yes 2824 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2828 PFPeS Perfluoropentanesulfonic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4025641 Yes 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 10/15/2025 01/14/2026 2812 PFUnA Perfluoroundecanoic acid ND 2.00 2510192-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 14605 3037969 4026129 Yes 2812 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS


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