OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00205
PWS Name: COOS BAY NORTH BEND WTR BRD
 
Who Was Contacted and Phone: Robert Buras (541) 267-3128
Contact Date: 07/05/2011
Contacted By: MACPHERSON, JAMES (REGION 2)
Contact Method/Location: Office
 
Assistance Type: OTHER REGULATORY - REGULATORY ASSISTANCE
Reasons: Chlorine
SWTR
 
Details: SUMMARY: Chlorine concentation drop and flow spike DETAILS: The ammonia feed dropped off, causing a change in the breakpoint chlorination and a resultant drop in available chlorine. Within the time-frame of getting this repaired, a main broke, causing a short-term flow increase equivalent to 11.75 MGD. The combined effects caused a drop in CT below the required value. The line break is repaired and the ammonia feed is restored. Required CT is now exceeded. Tier 2 public notice is required. ACTION NEEDED: none


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