OHA Drinking Water Services
OR41
PWS ID: 00186 ---- CHRISTMAS VALLEY DOMESTIC WS

See also: Coliform 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 LEAD & COPPER notes3 Years01/01/2027 - 12/31/2027   10 09/25/2024
  Seasonal sampling period:   06/01   thru   09/30
EP-A  EP FOR WELL #5 NITRATE notesYearly 01/01/2026 - 12/31/2026 263 1 incomplete11/17/2025
EP-A  EP FOR WELL #5 PFAS notes6 Months 01/01/2026 - 06/30/2026 79 1 incomplete
  Initial monitoring - 2 samples only
EP-B  EP FOR WELL #3 ARSENIC notes9 Years01/01/2023 - 12/31/2031 2,089 1 done 11/17/2025
EP-B  EP FOR WELL #3 IOC notes9 Years01/01/2020 - 12/31/2028 994 1 done 11/17/2025
EP-B  EP FOR WELL #3 NITRATE notesYearly 01/01/2026 - 12/31/2026 263 1 incomplete11/17/2025
EP-B  EP FOR WELL #3 NITRITE notes9 Years01/01/2020 - 12/31/2028 994 1 done 11/17/2025
EP-B  EP FOR WELL #3 PFAS notes6 Months 01/01/2026 - 06/30/2026 79 1 incomplete
  Initial monitoring - 2 samples only
EP-B  EP FOR WELL #3 RAD - GROSS ALPHA notes9 Years 01/01/2023 - 12/31/2031 2,089 1 incomplete11/16/2017
EP-B  EP FOR WELL #3 RAD - RADIUM 226/228notes9 Years 01/01/2023 - 12/31/2031 2,089 1 incomplete11/16/2017
EP-B  EP FOR WELL #3 RAD - URANIUM notes9 Years 01/01/2026 - 12/31/2034 3,185 1 incomplete07/13/2022
EP-B  EP FOR WELL #3 SOC notes3 Years 01/01/2026 - 12/31/2028 994 1 incomplete11/17/2025
EP-B  EP FOR WELL #3 VOLATILE ORGANICS notes3 Years 01/01/2026 - 12/31/2028 994 1 incomplete11/17/2025
EP-C  EP FOR WELL #4 ARSENIC notes9 Years 01/01/2023 - 12/31/2031 2,089 1 incomplete10/16/2019
EP-C  EP FOR WELL #4 IOC notes9 Years 01/01/2020 - 12/31/2028 994 1 incomplete10/16/2019
EP-C  EP FOR WELL #4 NITRATE  Yearly 01/01/2026 - 12/31/2026 263 1 incomplete11/17/2025
EP-C  EP FOR WELL #4 NITRITE notes9 Years 01/01/2026 - 12/31/2034 3,185 1 incomplete10/16/2019
EP-C  EP FOR WELL #4 PFAS notes6 Months 01/01/2026 - 06/30/2026 79 1 incomplete
  Initial monitoring - 2 samples only
EP-C  EP FOR WELL #4 RAD - GROSS ALPHA notes9 Years 01/01/2023 - 12/31/2031 2,089 1 incomplete11/16/2017
EP-C  EP FOR WELL #4 RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,185 1 incomplete11/16/2017
EP-C  EP FOR WELL #4 RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,185 1 incomplete07/13/2022
EP-C  EP FOR WELL #4 SOC  3 Years 01/01/2026 - 12/31/2028 994 1 incomplete11/17/2025
EP-C  EP FOR WELL #4 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 994 1 incomplete11/17/2025

5  secs
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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
EP-A  EP FOR WELL #5ARSENIC  3 Years01/01/200212/31/20131
EP-A  EP FOR WELL #5ARSENIC  9 Years01/01/201412/31/20161
EP-A  EP FOR WELL #5IOC  9 Years01/01/200212/31/20161Schedule Reflects Monitoring Reduction Granted
EP-A  EP FOR WELL #5NITRATE  Yearly01/01/200205/15/20231Nitrate monitoring only at EP-A. Other chemical monitoring conducted at EP-C which is the designated wellfield sampling location for this aquifer.
EP-A  EP FOR WELL #5NITRITE  9 Years01/01/200212/31/20161Schedule Reflects Monitoring Reduction Granted
EP-A  EP FOR WELL #5RAD - GROSS ALPHA  9 Years01/01/200812/31/20161
EP-A  EP FOR WELL #5RAD - RADIUM 226/228  9 Years01/01/200812/31/20161
EP-A  EP FOR WELL #5RAD - URANIUM  9 Years01/01/200812/31/20161
EP-A  EP FOR WELL #5SOC  3 Years01/01/200212/31/20161
EP-A  EP FOR WELL #5VOLATILE ORGANICS  3 Years01/01/200212/31/20161
EP-B  EP FOR WELL #3ARSENIC  3 Years01/01/200212/31/20131
EP-B  EP FOR WELL #3NITRATE  Yearly01/01/200205/15/20231
EP-B  EP FOR WELL #3RAD - GROSS ALPHA  6 Years01/01/201712/31/20221
EP-B  EP FOR WELL #3RAD - GROSS ALPHA  9 Years01/01/200812/31/20161
EP-B  EP FOR WELL #3RAD - RADIUM 226/228  6 Years01/01/201712/31/20221
EP-B  EP FOR WELL #3RAD - RADIUM 226/228  9 Years01/01/200812/31/20161
EP-B  EP FOR WELL #3TOLUENE   Quarterly10/01/201103/31/20121Quarterly schedule added due to detection.
EP-B  EP FOR WELL #3TOLUENE   Yearly01/01/201312/31/20151Sample in 4th Quarter
EP-B  EP FOR WELL #3VOLATILE ORGANICS  3 Years01/01/200212/31/20161
EP-C  EP FOR WELL #4ARSENIC  3 Years01/01/200210/22/20031
EP-C  EP FOR WELL #4IOC  9 Years01/01/200210/22/20031Schedule Reflects Monitoring Reduction Granted
EP-C  EP FOR WELL #4NITRATE  Yearly01/01/200210/22/20031
EP-C  EP FOR WELL #4NITRITE  9 Years01/01/200210/22/20031Schedule Reflects Monitoring Reduction Granted
EP-C  EP FOR WELL #4RAD - GROSS ALPHA  6 Years01/01/201712/31/20221
EP-C  EP FOR WELL #4SOC  3 Years01/01/200210/22/20031
EP-C  EP FOR WELL #4VOLATILE ORGANICS  3 Years01/01/200210/22/20031

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