OHA Drinking Water Services
OR41
PWS ID: 91508 ---- RUCH ELEMENTARY SD 549
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 12/31/2024 6/17/2024 12/16/2024 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 06/17/2024 4 3 117416P
Yes EP-A EP for WELL 12/16/2024 4 3 123901P


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 06/17/2024 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 117416P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021118 4000843 Yes 2816M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 06/17/2024 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid 14.80 1.00 117416P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021118 4001334 Yes 2801M D 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 06/17/2024 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid 33.40 10 1.00 117416P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021118 4001236 Yes 2803M DE 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 06/17/2024 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 117416P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021118 4001138 Yes 2804M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 06/17/2024 09/04/2025 2806 PFOA Perfluorooctanoic acid 9.20 4.0 1.30 117416P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021118 4000941 Yes 2806M DE 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 06/17/2024 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid 10.60 4.0 1.30 117416P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021118 4001039 Yes 2805M DE 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 12/16/2024 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 123901P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021119 4000844 Yes 2816M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 12/16/2024 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid 11.00 1.00 123901P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021119 4001333 Yes 2801M D 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 12/16/2024 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid 27.70 10 1.00 123901P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021119 4001235 Yes 2803M DE 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 12/16/2024 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 123901P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021119 4001137 Yes 2804M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 12/16/2024 09/04/2025 2806 PFOA Perfluorooctanoic acid 9.30 4.0 1.30 123901P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021119 4000942 Yes 2806M DE 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for WELL 12/16/2024 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid 8.90 4.0 1.30 123901P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13977 3021119 4001040 Yes 2805M DE 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS