OHA Drinking Water Services
OR41
PWS ID: 00229 ---- RIDGEWOOD DIST IMPROV CO

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   5 06/03/2024
  Seasonal sampling period:   06/01   thru   09/30
EP-A  EP for WELL ARSENIC  9 Years01/01/2020 - 12/31/2028 1,011 1 done 05/06/2024
EP-A  EP for WELL IOC notes9 Years01/01/2020 - 12/31/2028 1,011 1 done 05/06/2024
EP-A  EP for WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 280 1 incomplete06/02/2025
EP-A  EP for WELL NITRITE notes9 Years01/01/2020 - 12/31/2028 1,011 1 done 05/06/2024
EP-A  EP for WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 96 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP for WELL RAD - GROSS ALPHA notes9 Years01/01/2026 - 12/31/2034 3,202 1 done 02/02/2026
EP-A  EP for WELL RAD - RADIUM 226/228notes9 Years01/01/2023 - 12/31/2031 2,106 1 done 02/02/2026
EP-A  EP for WELL RAD - URANIUM notes9 Years01/01/2023 - 12/31/2031 2,106 1 done 02/02/2026
EP-A  EP for WELL SOC  3 Years 01/01/2026 - 12/31/2028 1,011 1 incomplete05/06/2024
EP-A  EP for WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,011 1 incomplete05/06/2024

6  secs
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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
EP-A  EP for WELLARSENIC  3 Years01/01/200212/31/20101
EP-A  EP for WELLRAD - RADIUM 226/228  6 Years01/01/200812/31/20131Schedule Reflects Monitoring Reduction Granted
EP-A  EP for WELLRAD - URANIUM  6 Years01/01/200812/31/20131Schedule Reflects Monitoring Reduction Granted

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