OHA Drinking Water Services
OR41
PWS ID: 00792 ---- SCAPPOOSE, 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 WTP-A SW Permanent 4 quarters 1/1/2023 2/22/2023 8/22/2023 11/20/2023
EP-B EP FOR MILLER ROAD WELLS GW Permanent 2 samples 1/1/2023 12/31/2023 2/22/2023 8/22/2023 N/A N/A
For each active entry point served by surface water, collect 4 consecutive quarters of samples within a 12-month period with samples collected 2 to 4 months apart.
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 WTP-A 10/18/2023 0 0 109422R
Yes EP-A EP FOR WTP-A 11/20/2023 0 0 109902P
Yes EP-A EP FOR WTP-A 02/22/2023 0 0 101645P
Yes EP-A EP FOR WTP-A 08/22/2023 1 0 107025P
Yes EP-B EP FOR MILLER ROAD WELLS 02/22/2023 0 0 101646P
Yes EP-B EP FOR MILLER ROAD WELLS 08/22/2023 1 0 107026P


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 WTP-A 02/22/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 101645P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021197 4000276 Yes 2816M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 02/22/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 101645P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021197 4000761 Yes 2801M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 02/22/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 101645P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021197 4000664 Yes 2803M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 02/22/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 101645P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021197 4000567 Yes 2804M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 02/22/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 101645P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021197 4000373 Yes 2806M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 02/22/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 101645P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021197 4000470 Yes 2805M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 08/22/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 107025P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021195 4000274 Yes 2816M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 08/22/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid 1.30 1.00 107025P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021195 4000759 Yes 2801M D 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 08/22/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 107025P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021195 4000662 Yes 2803M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 08/22/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 107025P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021195 4000565 Yes 2804M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 08/22/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 107025P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021195 4000371 Yes 2806M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 08/22/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 107025P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021195 4000468 Yes 2805M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 10/18/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 109422R 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021098 4000241 Yes 2816M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 10/18/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 109422R 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021098 4000726 Yes 2801M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 10/18/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 109422R 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021098 4000629 Yes 2803M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 10/18/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 109422R 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021098 4000532 Yes 2804M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 10/18/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 109422R 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021098 4000338 Yes 2806M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 10/18/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 109422R 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021098 4000435 Yes 2805M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 11/20/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 109902P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021099 4000242 Yes 2816M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 11/20/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 109902P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021099 4000727 Yes 2801M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 11/20/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 109902P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021099 4000630 Yes 2803M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 11/20/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 109902P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021099 4000533 Yes 2804M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 11/20/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 109902P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021099 4000339 Yes 2806M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WTP-A 11/20/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 109902P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12227 3021099 4000436 Yes 2805M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 02/22/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 101646P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021198 4000277 Yes 2816M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 02/22/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 101646P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021198 4000762 Yes 2801M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 02/22/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 101646P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021198 4000665 Yes 2803M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 02/22/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 101646P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021198 4000568 Yes 2804M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 02/22/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 101646P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021198 4000374 Yes 2806M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 02/22/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 101646P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021198 4000471 Yes 2805M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 08/22/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 107026P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021196 4000275 Yes 2816M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 08/22/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 107026P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021196 4000760 Yes 2801M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 08/22/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 107026P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021196 4000663 Yes 2803M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 08/22/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 107026P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021196 4000566 Yes 2804M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 08/22/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 107026P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021196 4000372 Yes 2806M N 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR MILLER ROAD WELLS 08/22/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid 1.50 4.0 1.30 107026P 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 18285 3021196 4000469 Yes 2805M D 4047 WECK LABORATORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS


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