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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00792
PWS Name:	SCAPPOOSE, CITY OF

Who Was Contacted and Phone:	Joe Lewis (971) 246-9004
Contact Date:	03/25/2009
Contacted By:	HENRY, ROBERT (DWP)
Contact Method/Location:	Field

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

Details:	SUMMARY: Contact Tracer Study DETAILS: The City owns and operates a Surface Water system, which supplies approximately 5800 people through 2000 connections. The city treats water from multiple creek sources. In addition, water is provided through 2 wells. HBH was contacted by the city to provide assistance with a contact tracer study. When discussing the study, it was determined that a hydraulic connection at the surface water treatment plant would potentially interfere with the testing. I discussed causes and a remedy for the hydraulic problem, which appears to be an air lock in an artificial high point in the WTP piping. ACTION NEEDED: I performed CT testing and the city also has requested assistance with filter optimization.