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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00922
PWS Name:	VERNONIA, CITY OF

Who Was Contacted and Phone:	Jeff Burch (503) 429-6921
Contact Date:	01/21/2011
Contacted By:	CARR, BRAD (DWP)
Contact Method/Location:	Field

Assistance Type:	CIRCUIT RIDER ASSISTANCE
Reasons:	N/A N/A

Details:	SUMMARY: CT Tracer Study DETAILS: The City owns and operates a surface water system that provides water to 2,475 people through 920 connections. Water from the Rock Creek is treated by rapid sand filters prior to disinfection with gaseous chlorine. HBH was contacted by the City to provide assistance with a contact tracer study to determine the amount of time in the treatment plant clearwell/reservoir before the first user. HBH met with City’s operator on-site to determine operational conditions for the tracer testing. ACTION NEEDED: Write up tracer study methodology memo.