OHA Drinking Water Services
OR41
PWS ID: 00461 ---- RIVERGROVE WATER DISTRICT

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 ASBESTOS, DIST notes9 Years 01/01/2020 - 12/31/2028 1,129 1 incomplete09/25/2019
DIST-A  Distribution System LEAD & COPPER notes3 Years01/01/2025 - 12/31/2025   20done 07/09/2025
 Seasonal sampling period:  06/01  thru  09/30
DIST-A  Distribution System STAGE 2 DBP notesYearly01/01/2025 - 12/31/2025 33 2 done 08/12/2025
 Seasonal sampling period:  08/01  thru  08/31
EP-A  EP FOR WELL #1 NITRATE notesYearly01/01/2025 - 12/31/2025 33 1 done 08/27/2025
EP-B  EP FOR WELL #2TOTAL POLYCHLORINATED BIPHENYLS (PCB) 3 Years01/01/2023 - 12/31/2025 33 2 incomplete 09/08/2025
EP-B  EP FOR WELL #2 ARSENIC notes9 Years01/01/2017 - 12/31/2025 33 1 done 08/17/2020
EP-B  EP FOR WELL #2 IOC notes9 Years01/01/2020 - 12/31/2028 1,129 1 done 08/17/2020
EP-B  EP FOR WELL #2 NITRATE  Yearly01/01/2025 - 12/31/2025 33 1 done 08/27/2025
EP-B  EP FOR WELL #2 NITRITE notes9 Years01/01/2020 - 12/31/2028 1,129 1 done 08/17/2020
EP-B  EP FOR WELL #2 RAD - GROSS ALPHA  6 Years 01/01/2023 - 12/31/2028 1,129 1 incomplete08/17/2020
EP-B  EP FOR WELL #2 RAD - RADIUM 226/228 9 Years01/01/2017 - 12/31/2025 33 1 done 08/17/2020
EP-B  EP FOR WELL #2 RAD - URANIUM  9 Years 01/01/2023 - 12/31/2031 2,224 1 incomplete08/17/2020
EP-B  EP FOR WELL #2 SOC MINUS SOCR CHEMSnotes9 Years 01/01/2017 - 12/31/2025 33 2 incomplete09/08/2025
EP-B  EP FOR WELL #2 SOCR  3 Years 01/01/2023 - 12/31/2025 33 2 incomplete09/08/2025
EP-B  EP FOR WELL #2 VOLATILE ORGANICS  3 Years 01/01/2023 - 12/31/2025 33 1 incomplete08/11/2022
EP-C  EP FOR OLSON WELL NITRATE notesYearly01/01/2025 - 12/31/2025 33 1 done 08/27/2025

8  secs
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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
DIST-A  Distribution SystemHAA5 & TTHM  3 Years01/01/200512/31/20131Sample between June 1 and Sept. 30.
DIST-A  Distribution SystemHAA5 & TTHM  Yearly01/01/200412/31/20041Sample Between June 1st and Sept 30th Each Year
DIST-A  Distribution SystemLEAD & COPPER  3 Years01/01/200212/31/201220New Well #3 drilled in 2010, and put online in 2012 resets the Lead & Copper sampling to two 6-month demonstration rounds.
EP-A  EP FOR WELL #1ARSENIC  3 Years01/01/200212/31/20071
EP-A  EP FOR WELL #1ARSENIC  9 Years01/01/200812/31/20121Wellfield designation in Feb. 2013. Sample all 3 wells' via Well #2.
EP-A  EP FOR WELL #1IOC  9 Years01/01/200212/31/20121Wellfield designation in Feb. 2013. Sample all 3 wells' via Well #2.
EP-A  EP FOR WELL #1NITRITE  9 Years01/01/200212/31/20121Wellfield designation in Feb. 2013. Sample all 3 wells' via Well #2.
EP-A  EP FOR WELL #1RAD - GROSS ALPHA  9 Years01/01/200812/31/20121Wellfield designation in Feb. 2013. Sample all 3 wells' via Well #2.
EP-A  EP FOR WELL #1RAD - RADIUM 226/228  9 Years01/01/200812/31/20121Wellfield designation in Feb. 2013. Sample all 3 wells' via Well #2.
EP-A  EP FOR WELL #1RAD - URANIUM  6 Years01/01/200812/31/20121Wellfield designation in Feb. 2013. Sample all 3 wells' via Well #2.
EP-A  EP FOR WELL #1SOC  3 Years01/01/200212/31/200722 Consec. QT Samples
EP-A  EP FOR WELL #1SOC MINUS SOCR CHEMS  9 Years01/01/200812/31/20122
EP-A  EP FOR WELL #1SOCR  3 Years01/01/200812/31/20102Closed schedule on 12/31/10 to prevent/reduce violations.
EP-A  EP FOR WELL #1TOTAL POLYCHLORINATED BIPHENYLS (PCB)  3 Years01/02/200812/31/20102
EP-A  EP FOR WELL #1VOLATILE ORGANICS  3 Years01/01/200212/31/20121Wellfield designation in Feb. 2013. Sample all 3 wells' via Well #2.
EP-B  EP FOR WELL #2ARSENIC  3 Years01/01/200212/31/20071
EP-B  EP FOR WELL #2RAD - GROSS ALPHA  9 Years01/01/200812/31/20161
EP-B  EP FOR WELL #2RAD - URANIUM  6 Years01/01/200812/31/20131
EP-B  EP FOR WELL #2SOC  3 Years01/01/200212/31/200722 Consec. QT Samples

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