OHA Drinking Water Services
OR41
PWS ID: 05567 ---- SUNRIDGE ESTATES LOWER
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 PHASE 1 & II GW Permanent 2 samples 1/1/2023 10/2/2025 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 PHASE 1 & II 10/02/2025 6 1 2510017-01RE1


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 PHASE 1 & II 10/02/2025 12/24/2025 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015101 Yes 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015011 Yes 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015026 Yes 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4014996 Yes 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015086 Yes 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015071 Yes 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015056 Yes 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2827 NFDHA Nonafluoro-3,6-dioxaheptanoic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4014921 Yes 2827 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2819 PFBA Perfluorobutanoic acid ND 4.79 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015041 Yes 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2801 PFBS Perfluorobutanesulfonic acid 5.92 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015251 Yes 2801M D 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2807 PFDA Perfluorodecanoic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015161 Yes 2807 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2808 PFDoA Perfluorododecanoic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015146 Yes 2808 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4014936 Yes 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2802 PFHpA Perfluoroheptanoic acid 2.29 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015236 Yes 2802 D 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2829 PFHpS Perfluoroheptanesulfonic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4014891 Yes 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2809 PFHxA Perfluorohexanoic acid 7.02 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015131 Yes 2809 D 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015221 Yes 2803M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4014951 Yes 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4014981 Yes 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2804 PFNA Perfluorononanoic acid ND 10 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015206 Yes 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2806 PFOA Perfluorooctanoic acid 9.22 4.0 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015176 Yes 2806M DE 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2805 PFOS Perfluorooctanesulfonic acid 2.97 4.0 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015191 Yes 2805M D 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2824 PFPeA Perfluoropentanoic acid 5.68 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4014966 Yes 2824 D 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2828 PFPeS Perfluoropentanesulfonic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4014906 Yes 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR PHASE 1 & II 10/02/2025 12/24/2025 2812 PFUnA Perfluoroundecanoic acid ND 1.92 2510017-01RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13521 3031735 4015116 Yes 2812 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS


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