| 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-A | TOTAL ORGANIC CARBON | notes | Quarterly | 01/01/2026 - 03/31/2026 | 62 | 1 | incomplete | 05/05/2025 | |||
| DIST-A DISTRIBUTION SYSTEM | ASBESTOS, DIST | notes | 9 Years | 01/01/2020 - 12/31/2028 | 1,068 | 1 | done | 03/01/2023 | |||
| DIST-A DISTRIBUTION SYSTEM | LEAD & COPPER | notes | 3 Years | 01/01/2028 - 12/31/2028 | 20 | 08/28/2025 | |||||
| Seasonal sampling period: 06/01 thru 09/30 | |||||||||||
| DIST-A DISTRIBUTION SYSTEM | STAGE 2 DBP | notes | Yearly | 01/01/2026 - 12/31/2026 | 337 | 2 | incomplete | 11/18/2024 | |||
| Seasonal sampling period: 11/01 thru 11/30 | |||||||||||
| EP-A EP FOR CLACKAMAS RIVER | ARSENIC | notes | 9 Years | 01/01/2020 - 12/31/2028 | 1,068 | 1 | incomplete | 04/17/2018 | |||
| EP-A EP FOR CLACKAMAS RIVER | IOC | notes | 9 Years | 01/01/2020 - 12/31/2028 | 1,068 | 1 | incomplete | 04/17/2018 | |||
| EP-A EP FOR CLACKAMAS RIVER | NITRATE | Yearly | 01/01/2026 - 12/31/2026 | 337 | 1 | incomplete | 02/12/2025 | ||||
| EP-A EP FOR CLACKAMAS RIVER | NITRITE | notes | 9 Years | 01/01/2020 - 12/31/2028 | 1,068 | 1 | incomplete | 04/17/2018 | |||
| EP-A EP FOR CLACKAMAS RIVER | RAD - GROSS ALPHA | 9 Years | 01/01/2026 - 12/31/2034 | 3,259 | 1 | incomplete | 05/05/2025 | ||||
| EP-A EP FOR CLACKAMAS RIVER | RAD - RADIUM 226/228 | 9 Years | 01/01/2026 - 12/31/2034 | 3,259 | 1 | incomplete | 05/05/2025 | ||||
| EP-A EP FOR CLACKAMAS RIVER | RAD - URANIUM | 9 Years | 01/01/2026 - 12/31/2034 | 3,259 | 1 | incomplete | 05/05/2025 | ||||
| EP-A EP FOR CLACKAMAS RIVER | SOC | notes | 3 Years | 01/01/2026 - 12/31/2028 | 1,068 | 2 | incomplete | 05/05/2025 | |||
| EP-A EP FOR CLACKAMAS RIVER | VOLATILE ORGANICS | Yearly | 01/01/2026 - 12/31/2026 | 337 | 1 | incomplete | 05/05/2025 | ||||
| SRC-AA CLACKAMAS RIVER | CYANOTOXINS | 2 Weeks | -- | -- | -- | -- | -- | 10/26/2025 | |||
| Seasonal sampling period: 05/01 thru 10/31 | |||||||||||
6 secs | |||||||||||
| Expired Schedules | |||||||||
| Facility ID |
Analyte or Group | Sampling Interval |
Start | End | Samples Required |
Notes | |||
| CH-A COMMON HEADER FOR WTP-A | TOC & ALKALINITY | Monthly | 01/01/2004 | 03/31/2008 | 1 | Raw and filtered TOC and alkalinity | |||
| CH-A COMMON HEADER FOR WTP-A | TOC & ALKALINITY | Quarterly | 04/01/2008 | 09/30/2013 | 1 | TOC required for Stage 1 and Stage 2 sampling: OAR 333-061-0036(4)(n) | |||
| DIST-A DISTRIBUTION SYSTEM | HAA5 & TTHM | Quarterly | 01/01/2004 | 12/31/2005 | 1 | Schedule Reflects 1 RT Sample Per QT Per WTP | |||
| DIST-A DISTRIBUTION SYSTEM | HAA5 & TTHM | Yearly | 01/01/2006 | 09/30/2013 | 1 | Sample between June 1 and Sept. 30. | |||
| DIST-A DISTRIBUTION SYSTEM | LEAD & COPPER | 3 Years | 01/01/2002 | 12/31/2019 | 10 | Sample Between June 1st and Sept 30th | |||
| DIST-A DISTRIBUTION SYSTEM | STAGE 2 DBP | Quarterly | 10/01/2013 | 09/30/2020 | 1 | Sample in Dec, Mar, June, and Sept | |||
| EP-A EP FOR CLACKAMAS RIVER | ARSENIC | Yearly | 01/01/2002 | 12/31/2006 | 1 | ||||
| EP-A EP FOR CLACKAMAS RIVER | DICHLOROMETHANE | Quarterly | 04/01/2021 | 12/31/2022 | 1 | ||||
| EP-A EP FOR CLACKAMAS RIVER | SOC | 3 Years | 01/01/2002 | 12/31/2019 | 1 | ||||
| EP-A EP FOR CLACKAMAS RIVER | VOLATILE ORGANICS | Yearly | 01/01/2002 | 12/31/2015 | 1 | ||||
| EP-A EP FOR CLACKAMAS RIVER | VOLATILE ORGANICS | Yearly | 01/01/2016 | 12/31/2022 | 1 | ||||
| EP-A EP FOR CLACKAMAS RIVER | XYLENES, TOTAL | Quarterly | 07/01/2014 | 12/31/2015 | 1 | ||||
| WTP-A TP FOR CLACKAMAS RIVER | TOTAL ORGANIC CARBON | Monthly | 01/01/2004 | 12/31/2007 | 1 | Not req'd for 2.0 log plant | |||