OHA Drinking Water Services
OR41
PWS ID: 00317 ---- GATES, CITY OF

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
DIST-A  DISTRIBUTION SYSTEM ASBESTOS, DIST notes9 Years 01/01/2026 - 12/31/2034 3,186 1 incomplete01/07/2025
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notesYearly 01/01/2026 - 12/31/2026 264 5 incomplete09/01/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 264 1 incomplete06/30/2025
  Seasonal sampling period:   06/01   thru   06/30
EP-A  EP FOR NORTH SANTIAM RIVER ARSENIC notes9 Years01/01/2020 - 12/31/2028 995 1 done 06/11/2024
EP-A  EP FOR NORTH SANTIAM RIVER IOC notes9 Years01/01/2020 - 12/31/2028 995 1 done 06/11/2024
EP-A  EP FOR NORTH SANTIAM RIVER NITRATE  Yearly01/01/2026 - 12/31/2026 264 1 done 01/06/2026
EP-A  EP FOR NORTH SANTIAM RIVER NITRITE notes9 Years01/01/2020 - 12/31/2028 995 1 done 06/11/2024
EP-A  EP FOR NORTH SANTIAM RIVER PFAS notesQuarterly 04/01/2026 - 06/30/2026 80 1 incomplete
  Initial monitoring - 4 quarters only
EP-A  EP FOR NORTH SANTIAM RIVER RAD - GROSS ALPHA notes9 Years 01/01/2026 - 12/31/2034 3,186 1 incomplete01/05/2021
EP-A  EP FOR NORTH SANTIAM RIVER RAD - RADIUM 226/228 6 Years 01/01/2023 - 12/31/2028 995 1 incomplete06/12/2018
EP-A  EP FOR NORTH SANTIAM RIVER RAD - URANIUM notes9 Years 01/01/2023 - 12/31/2031 2,090 1 incomplete01/05/2021
EP-A  EP FOR NORTH SANTIAM RIVER SOC  3 Years 01/01/2026 - 12/31/2028 995 1 incomplete06/11/2024
EP-A  EP FOR NORTH SANTIAM RIVER VOLATILE ORGANICS  Yearly01/01/2026 - 12/31/2026 264 1 done 01/06/2026
SRC-AA  NORTH SANTIAM 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
DIST-A  DISTRIBUTION SYSTEMASBESTOS, DIST  3 Years01/01/200212/31/20071
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Quarterly01/01/200412/31/20071Schedule Reflects 1 RT Sample Per QT Per WTP
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/200812/31/20131Sample between June 1 and Sept. 30.
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  3 Years01/01/200512/31/200710Sample Between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  3 Years01/01/200812/31/20175Sample Between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  3 Years01/01/201909/30/20245Collect samples between June 1 and September 30 at cold water drinking water taps.
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months01/01/201812/31/201810
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months01/01/202512/31/202510
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  Yearly01/01/200212/31/200210Sample Between June 1st and Sept 30th
EP-A  EP FOR NORTH SANTIAM RIVERARSENIC  Yearly01/01/200212/31/20041
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  Daily07/02/201907/11/20191
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  Daily07/10/202407/15/20241
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  Daily07/18/202408/16/20241
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  Daily08/20/202408/28/20241
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  Daily09/01/202409/06/20241
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  WK 06/09/202407/09/20241
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  WK 06/23/201907/01/20191
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  WK 07/14/201909/07/20191
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  WK 07/20/202508/01/20251
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  WK 08/18/202408/19/20241
EP-A  EP FOR NORTH SANTIAM RIVERCYANOTOXINS  WK 09/08/202409/30/20241
EP-A  EP FOR NORTH SANTIAM RIVERRAD - RADIUM 226/228  9 Years01/01/200812/31/20161Schedule Reflects Monitoring Reduction Granted
EP-A  EP FOR NORTH SANTIAM RIVERRAD - URANIUM  6 Years01/01/200812/31/20131
SRC-AA  NORTH SANTIAM RIVERCYANOTOXINS  2 Weeks07/15/201806/22/20191
SRC-AA  NORTH SANTIAM RIVERCYANOTOXINS  2 Weeks09/08/201906/06/20241
SRC-AA  NORTH SANTIAM RIVERCYANOTOXINS  2 Weeks10/13/202407/19/20251
SRC-AA  NORTH SANTIAM RIVERCYANOTOXINS  WK 06/09/202410/11/20241
SRC-AA  NORTH SANTIAM RIVERCYANOTOXINS  WK 06/23/201909/07/20191
SRC-AA  NORTH SANTIAM RIVERCYANOTOXINS  WK 07/20/202508/01/20251

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