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OHA Drinking Water Services Contact Report Details
PWS ID:	OR41 05581
PWS Name:	WEISS ESTATES WATER SYSTEM

Who Was Contacted and Phone:	Jim Lea (541) 347-5111
Contact Date:	11/19/2015
Contacted By:	HENRY, ROBERT (DWP)
Contact Method/Location:	Letter

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

Details:	SUMMARY: Contact Tracer Study DETAILS: The Weiss Estates Water System is a community surface water system which serves 27 people through 21 connections. The system is located near Bandon in Coos County. The source water is Fahy’s Lake. The raw water is treated by a Seccua membrane water treatment plant. The plant was constructed in 2011The water system contacted the Circuit Rider to assist with a contact tracer study. This study was prompted by high DBP levels. It was determined by Jay Macpherson that the next logical step to deal with the high DBP levels is to perform a tracer study. Based on the configuration of the contact vessels, it is apparent that the contact time is sufficient for disinfection. However, the purpose of the test is to determine how much additional contact time exists as this could be a source of the DBPs. In addition to the DBP issue, the water treatment plant is having several operational issues. Performed preliminary calculations for contact tracer testing methodology. ACTION NEEDED: Need to coordinate with water system to determine the location for new chlorine injection. Complete tracer study methodology and perform testing.