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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 00802
PWS Name:	ARCH CAPE WATER DISTRICT

Who Was Contacted and Phone:	Thomas Merrell (503) 436-2790
Contact Date:	09/29/2006
Contacted By:	HENRY, ROBERT (DWP)
Contact Method/Location:	Office

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

Details:	SUMMARY: Contact Tracer Study DETAILS: The Arch Cape Service District owns and operates a surface water treatment plant which supplies water to approximately 290 connections. The full-time population is around 300 person with additional part-time seasonal residents. The treatment plant is a Water Tech pressure filter which produce approximately 70 gpm Treated water is receives calcium hypochlorite for disinfection then enters a 440,000 gallon unbaffled reservoir clear well. The purpose of the Circuit Rider involvement with Arch Cape is to provide a Contact Tracer study for the water treatment plant. Actions Performed. Performed CT Study data collection by increasing flow through reservoir/clear well to peak levels while increasing chlorine dosage. ACTION NEEDED: Complete CT study report.