OHA Drinking Water Services
OR41
PWS ID: 90416 ---- GEORGIA-PACIFIC, WAUNA MILL

See also: Coliform Schedules  ::  LT2 Schedules

Chemical Sampling Schedule Status
Facility
ID		 Analyte or Group   Sampling
Interval		 Monitoring Period Days
Until
End		 Samples
Required		 Samples
Received		 Last
Sample
Date
Start End
CH-A  COMMON HEADER FOR WTP-ATOTAL ORGANIC CARBONnotesMonthly03/01/2026 - 03/31/2026 21 1 incomplete
DIST-A  Distribution System ASBESTOS, DIST notes9 Years01/01/2020 - 12/31/2028 1,027 1 done 11/30/2020
DIST-A  Distribution System LEAD & COPPER notesYearly 01/01/2026 - 12/31/2026 296 10 incomplete06/10/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  Distribution System STAGE 2 DBP notesQuarterly 01/01/2026 - 03/31/2026 21 1 incomplete11/06/2025
EP-A  EP FOR COLUMBIA RIVERSODIUM notesYearly01/01/2026 - 12/31/2026 296 1 incomplete 09/05/2025
EP-A  EP FOR COLUMBIA RIVERXYLENES, TOTAL notesYearly01/01/2026 - 12/31/2026 296 1 incomplete 11/06/2025
 Seasonal sampling period:  07/01  thru  09/30
EP-A  EP FOR COLUMBIA RIVER ARSENIC notes9 Years 01/01/2023 - 12/31/2031 2,122 1 incomplete05/26/2020
EP-A  EP FOR COLUMBIA RIVER IOC notes9 Years01/01/2020 - 12/31/2028 1,027 1 done 05/26/2020
EP-A  EP FOR COLUMBIA RIVER NITRATE  Yearly 01/01/2026 - 12/31/2026 296 1 incomplete09/05/2025
EP-A  EP FOR COLUMBIA RIVER NITRITE notes9 Years01/01/2020 - 12/31/2028 1,027 1 done 05/26/2020
EP-A  EP FOR COLUMBIA RIVER PFAS notesQuarterly 01/01/2026 - 03/31/2026 21 1 incomplete
  Initial monitoring - 4 quarters only
EP-A  EP FOR COLUMBIA RIVER SOC  3 Years 01/01/2026 - 12/31/2028 1,027 1 incomplete09/05/2025
EP-A  EP FOR COLUMBIA RIVER VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 296 1 incomplete11/06/2025
SRC-AA  COLUMBIA RIVER CYANOTOXINS  2 Weeks-- -- -- -- --10/20/2025
  Seasonal sampling period:   05/01   thru   10/31

5  secs
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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
CH-A  COMMON HEADER FOR WTP-ATOTAL ORGANIC CARBON  Monthly01/01/200409/30/20131Raw Water TOC Required Only for DBP Reduction
DIST-A  Distribution SystemHAA5 & TTHM  Quarterly01/01/200409/30/20131Schedule Reflects 1 RT Sample Per QT Per WTP
DIST-A  Distribution SystemLEAD & COPPER  3 Years01/01/200212/31/200410Sample Between June 1st and Sept 30th
DIST-A  Distribution SystemLEAD & COPPER  3 Years01/01/200512/31/200910Sample Between June 1st and Sept 30th
DIST-A  Distribution SystemLEAD & COPPER  3 Years01/01/201106/30/202210Sample between June 1st and Sept 30th
DIST-A  Distribution SystemLEAD & COPPER  6 Months01/01/201012/31/201020
DIST-A  Distribution SystemLEAD & COPPER  6 Months01/01/202306/30/20255
EP-A  EP FOR COLUMBIA RIVERARSENIC  Yearly01/01/200212/31/20131
EP-A  EP FOR COLUMBIA RIVERASBESTOS, DIST  9 Years01/01/200212/31/20101Schedule Reflects AC Pipe Only Prior to EP-A
EP-A  EP FOR COLUMBIA RIVERXYLENES, TOTAL   Quarterly01/01/202406/30/20241
SRC-AA  COLUMBIA RIVERCYANOTOXINS  WK 07/30/202309/15/20231

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