OHA Drinking Water Services
OR41
PWS ID: 00278 ---- ENTERPRISE, CITY OF
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 SPRING COLLECTORS GW Permanent 2 samples 1/1/2023 1/26/2026 N/A N/A
EP-B EP FOR WELL GW Permanent 2 samples 1/1/2023 1/26/2026 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 SPRING COLLECTORS 01/26/2026 0 0 2601191-01
Yes EP-B EP FOR WELL 01/26/2026 0 0 2601191-03


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 SPRING COLLECTORS 01/26/2026 04/21/2026 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099614 Yes 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099488 Yes 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099509 Yes 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099467 Yes 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099593 Yes 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099572 Yes 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099551 Yes 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2827 NFDHA Nonafluoro-3,6-dioxaheptanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099362 Yes 2827 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2819 PFBA Perfluorobutanoic acid ND 4.72 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099530 Yes 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2801 PFBS Perfluorobutanesulfonic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099824 Yes 2801M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2807 PFDA Perfluorodecanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099698 Yes 2807 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2808 PFDoA Perfluorododecanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099677 Yes 2808 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099383 Yes 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2802 PFHpA Perfluoroheptanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099803 Yes 2802 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2829 PFHpS Perfluoroheptanesulfonic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099320 Yes 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2809 PFHxA Perfluorohexanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099656 Yes 2809 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099782 Yes 2803M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099404 Yes 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099446 Yes 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2804 PFNA Perfluorononanoic acid ND 10 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099761 Yes 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2806 PFOA Perfluorooctanoic acid ND 4.0 1.42 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099719 Yes 2806M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.42 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099740 Yes 2805M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2824 PFPeA Perfluoropentanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099425 Yes 2824 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2828 PFPeS Perfluoropentanesulfonic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099341 Yes 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR SPRING COLLECTORS 01/26/2026 04/21/2026 2812 PFUnA Perfluoroundecanoic acid ND 1.89 2601191-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12537 3084699 4099635 Yes 2812 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099615 Yes 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099489 Yes 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099510 Yes 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099468 Yes 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099594 Yes 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099573 Yes 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099552 Yes 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2827 NFDHA Nonafluoro-3,6-dioxaheptanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099363 Yes 2827 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2819 PFBA Perfluorobutanoic acid ND 4.76 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099531 Yes 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2801 PFBS Perfluorobutanesulfonic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099825 Yes 2801M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2807 PFDA Perfluorodecanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099699 Yes 2807 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2808 PFDoA Perfluorododecanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099678 Yes 2808 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099384 Yes 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2802 PFHpA Perfluoroheptanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099804 Yes 2802 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2829 PFHpS Perfluoroheptanesulfonic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099321 Yes 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2809 PFHxA Perfluorohexanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099657 Yes 2809 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099783 Yes 2803M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099405 Yes 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099447 Yes 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2804 PFNA Perfluorononanoic acid ND 10 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099762 Yes 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2806 PFOA Perfluorooctanoic acid ND 4.0 1.43 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099720 Yes 2806M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.43 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099741 Yes 2805M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2824 PFPeA Perfluoropentanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099426 Yes 2824 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2828 PFPeS Perfluoropentanesulfonic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099342 Yes 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR WELL 01/26/2026 04/21/2026 2812 PFUnA Perfluoroundecanoic acid ND 1.90 2601191-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17025 3084700 4099636 Yes 2812 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS