OHA Drinking Water Services
Contact Report Details |
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| PWS ID: | OR41 00953 | ||
| PWS Name: | WILLAMINA, CITY OF | ||
| Who Was Contacted and Phone: | Justin Riggs (503) 437-7003 | ||
| Contact Date: | 04/04/2012 | ||
| Contacted By: | KALISH, FRED (REGION 1) | ||
| Contact Method/Location: | Office | ||
| Assistance Type: | OTHER REGULATORY - REGULATORY ASSISTANCE | ||
| Reasons: | SWTR Operations |
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| Details: | SUMMARY: Regulatory Compliance - SW Monthly Monitoring Reports DETAILS: I contacted Justin to discuss the SW Monthly Monitoring Reports - specifically the CT calculation sheet. I requested that Justin utilize the results from the 2007 Tracer Study and enter the value of 567 minutes in the Contact Time column - as this value represents the worst case scenario for a peak flow of up to 500 gpm. Justin indicated the peak flow is substantially below 500 gpm. He will check with the DRC and then presumably begin entering the proper value starting in this months report. ACTION NEEDED: None at this time. | ||