|
|
| Introduction :: Data Search Options :: Water System Search :: DWS Home :: DWS Rules |
OHA Drinking Water Services
Contact Report Details |
|||
| PWS ID: | OR41 00164 | ||
| PWS Name: | CANNON BEACH, CITY OF | ||
| Who Was Contacted and Phone: | Dan Grassick (503) 436-1581 | ||
| Contact Date: | 09/20/2013 | ||
| Contacted By: | KALISH, FRED (REGION 1) | ||
| Contact Method/Location: | Office | ||
| Assistance Type: | WATER QUALITY ALERT RESPONSE | ||
| Reasons: | Coliform Operations |
||
| Details: | SUMMARY: E Coli Pos in Annual Sample from Howell Spring DETAILS: DWS received notification that Source sample (annual assessment sample) from Howell Spring was TC+ and Ecoli + therefore I contacted Dan to discuss followup sampling. I notified Dan that they were required to take 5 additional confirmation samples from Howell Spring asap. I also requested chlorine residual information from entry point (at or before first user) for the last 5 days including this morning (they do daily grabs according to most recent WSS). I also recommended that they pull one coliform sample at or near the first user to verify the absence of coliform in the distribution system. ACTION NEEDED: Wait for chlorine residuals. Per their approved tracer study approved in 2010, as long as they have had a detectable residual at the entry point since 9/18/13 extending through today, they should have adequate contact time and chlorine residual to achieve 4 log viral innactivation - and therefore not need to be placed on boil even if the confirmation source samples confirm E coli. | ||
| Associated Alerts: | COLI12142 - 09/20/2013 - COLIFORM (TCR) , E. COLI COLI12142 - 09/20/2013 - COLIFORM (TCR) , E. COLI |
||