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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00081
PWS Name:	BEAVERTON, CITY OF

Who Was Contacted and Phone:	Beth (503) 781-0704
Contact Date:	05/01/2007
Contacted By:	SALIS, KARI (DWP)
Contact Method/Location:	Office

Assistance Type:	WATER QUALITY ALERT RESPONSE
Reasons:	Disinfection Byproducts N/A

Details:	SUMMARY: High TTHM results DETAILS: Beth called to report that they have high THM results for the 2nd quarter 2007. The results are not in SDWIS yet, but the average for the quarter is 0.0652 ppm, over the MCL. However, the RAA (as calculated quarterly) is 0.0424 ppm. Since this is not over the MCL nor is it over the 80% of the MCL, no action is required. I told her that if the RAA goes above 0.064 ppm for THMs, they would have to do a disinfection profile. Actually Im not sure if this would be required, since they buy water from JWC. We will figure this out if the situation arises. ACTION NEEDED: none