OHA Drinking Water Services
OR41
PWS ID: 00238 ---- LAMONTAI IMPROVEMENT WTR DIST
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 WELLS #1, 2, 7, & 14-16 (N TANK) GW Permanent 2 samples 1/1/2023 N/A N/A
EP-B EP FOR WELLS #3 & #4 GW Permanent 2 samples 1/1/2023 N/A N/A
EP-C EP FOR WELL #5 GW Permanent 2 samples 1/1/2023 N/A N/A
EP-D EP FOR WELLS #8 - #11 GW Permanent 2 samples 1/1/2023 N/A N/A
EP-E EP FOR WELL #13 GW Permanent 2 samples 1/1/2023 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
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 0 0 2112067-01


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
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213269 No 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212801 No 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212879 No 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212723 No 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213191 No 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213113 No 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 106 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213035 No 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2819 PFBA Perfluorobutanoic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212957 No 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2801 PFBS Perfluorobutanesulfonic acid ND 42.4 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3214049 No 2801M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2807 PFDA Perfluorodecanoic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213581 No 2807 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2808 PFDoA Perfluorododecanoic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213503 No 2808 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212411 No 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2802 PFHpA Perfluoroheptanoic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213971 No 2802 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2829 PFHpS Perfluoroheptanesulfonic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212255 No 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2809 PFHxA Perfluorohexanoic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213425 No 2809 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2803 PFHxS Perfluorohexanesulfonic acid ND 10 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213893 No 2803M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 21.2 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212489 No 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 42.4 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212645 No 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2804 PFNA Perfluorononanoic acid ND 10 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213815 No 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2806 PFOA Perfluorooctanoic acid ND 4.0 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213659 No 2806M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213737 No 2805M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2824 PFPeA Perfluoropentanoic acid ND 106 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212567 No 2824 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2828 PFPeS Perfluoropentanesulfonic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3212333 No 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
No EP-A EP FOR WELLS #1, 2, 7, & 14-16 (N TANK) 12/07/2021 01/27/2022 2812 PFUnA Perfluoroundecanoic acid ND 10.6 2112067-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15365 2427564 3213347 No 2812 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS