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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00067
PWS Name:	AURORA, CITY OF

Who Was Contacted and Phone:	Bob Southard (503) 678-1035
Contact Date:	12/28/2007
Contacted By:	HENRY, ROBERT (DWP)
Contact Method/Location:	Field

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

Details:	SUMMARY: Funding Assistance DETAILS: HBH was contacted by the system due to high arsenic levels in two of the municipal wells. The system provides water to approximately 900 persons through 400 connections. The water system consists of two older wells and one new well which is not currently approved for use. One of these wells has an arsenic level above the MCL. The water system is maintaining compliance through blending of the well sources. I met with Ron Southard to discuss options for removal of the arsenic from the water system. I indicated steps to be taken prior to deciding on a treatment strategy. I also met with City Engineer, John Ashley, PE at the request of the City, as he is currently working on a water Master Plan for Aurora. I indicated to the City that they should continue blending to keep arsenic levels in the water system below the MCL. I analyzed and investigated the best method of amnaging or treating arsenic problem. ACTION NEEDED: Write up detailed proper steps for the City to determine best treatment method for the removal of the arsenic.