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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00823
PWS Name:	SILVERTON, CITY OF

Who Was Contacted and Phone:	Steve Starner (503) 873-5473
Contact Date:	06/28/2010
Contacted By:	HENRY, ROBERT (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 9,540 people through 3,500 connections. Water from Abiqua and Silver Creeks is treated by a conventional water treatment plant prior to disinfection with Sodium Hypochlorite. HBH was contacted by Steve Starner to provide assistance with a contact tracer study to determine the amount of contact time in the reservoirs before the first user. The tracer testing is complicated by the current lack of a delivery meter following the contact reservoir. I composed methodology for the study which included a determination of proper test flows and submitted methodology to DWP for approval. ACTION NEEDED: Perform tracer testing.