OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00591 | ||
| PWS Name: | SOUTH FORK WATER BOARD | ||
| Who Was Contacted and Phone: | Dave Mustonen (503) 872-4699 | ||
| Contact Date: | 04/22/2008 | ||
| Contacted By: | FARRELLY, PETER (DWP) | ||
| Contact Method/Location: | Office | ||
| Assistance Type: | OTHER REGULATORY - REGULATORY ASSISTANCE | ||
| Reasons: | Lead or Copper Operations |
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| Details: | SUMMARY: Update on the Corrosion Control Plan DETAILS: The plan to gradually change the water character (explained in previous CR, and in Septembers Corrosion Control Plan Report), had some recent discouraging results. In their 2nd round of non-compliance sampling, they exceeded the lead action level. They began gradually, incrementally increasing soda ash dosing after installation of a new soda ash feeder around November. Current alkalinity concentration is slightly higher than before at 25 mg/L. Hearsay & conjecture has it that springtime Clackamas River flows have lower alkalinity or some other characteristic than increases corrosion. Perhaps there is some unknown-as-of-yet reason for it. ACTION NEEDED: * Stay the course. Do not change the soda dosing, for now. * SFWB will write up report on how the plan was implemented since October 2007, including dosing rates and dates, and sampling parameters and dates. * Dave or Kim will send Pete a finished draft in 2 weeks (Tuesday May 6th) * We will evaluate the plan and the future course then. |
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