OHA Drinking Water Services
OR41
PWS ID: 00985 ---- HILLSBORO-CHERRY GROVE

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 CARBONnotesQuarterly10/01/2025 - 12/31/2025 32 1 done 11/05/2025
DIST-A  DISTRIBUTION SYSTEM ASBESTOS, DIST  9 Years 01/01/2020 - 12/31/2028 1,128 1 incomplete12/15/2008
DIST-A  DISTRIBUTION SYSTEM DBP2 HAA5 ONLY notesYearly01/01/2025 - 12/31/2025 32 1 done 01/08/2025
 Seasonal sampling period:  01/01  thru  01/31
DIST-A  DISTRIBUTION SYSTEM DBP2 TTHM ONLY notesYearly01/01/2025 - 12/31/2025 32 1 done 10/01/2025
 Seasonal sampling period:  10/01  thru  10/31
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2027 - 12/31/2027   10 06/05/2024
 Seasonal sampling period:  06/01  thru  09/30
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLS ARSENIC notes9 Years01/01/2023 - 12/31/2031 2,223 1 done 04/02/2025
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLS IOC notes9 Years01/01/2020 - 12/31/2028 1,128 1 done 04/02/2025
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLS NITRATE  Yearly01/01/2025 - 12/31/2025 32 1 done 04/02/2025
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLS NITRITE notes9 Years01/01/2020 - 12/31/2028 1,128 1 done 04/02/2025
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLS RAD - GROSS ALPHA notes9 Years01/01/2017 - 12/31/2025 32 1 done 04/07/2021
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLS RAD - RADIUM 226/228notes9 Years 01/01/2023 - 12/31/2031 2,223 1 incomplete04/07/2021
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLS RAD - URANIUM notes9 Years01/01/2017 - 12/31/2025 32 1 done 04/07/2021
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLS SOC  3 Years01/01/2023 - 12/31/2025 32 1 done 04/02/2025
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLS VOLATILE ORGANICS  Yearly01/01/2025 - 12/31/2025 32 1 done 04/02/2025

8  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  Monthly01/01/200409/30/20081Raw Water TOC Only Required for Reduction in DBP Monitoring
CH-A  COMMON HEADER FOR WTP-ATOTAL ORGANIC CARBON  Monthly01/01/200906/30/20101Raw Water TOC Only Required to Maintain Reduction in DBP Monitoring
CH-A  COMMON HEADER FOR WTP-ATOTAL ORGANIC CARBON  Monthly10/01/200812/31/20081Raw Water TOC Only Required for Reduction in DBP Monitoring
DIST-A  DISTRIBUTION SYSTEMASBESTOS, DIST  9 Years01/01/200212/31/20101Schedule Reflects Monitoring Reduction Granted
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Quarterly01/01/200512/31/20051Schedule Reflects 1 sample per WTP per QT
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/200609/30/20131Sample Between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 DBP  Quarterly10/01/201312/31/20141Sample in Oct, Jan, Apr, and July
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLSARSENIC  Yearly01/01/200201/01/20121
EP-A  EP FOR UPPER TUALATIN R. - HAINES FALLSRAD - RADIUM 226/228  6 Years01/01/200801/01/20131

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