OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00926
Who Was Contacted and Phone: Scott Andry (541) 563-2111
Contact Date: 04/09/2015
Contacted By: BURNS, LAURA C (DWP)
Contact Method/Location: Office
Reasons: VOCs
Details: SUMMARY: Reservoir recoating questions DETAILS: Scott contacted me about a contractor using Xylene while repairing the reservoir coating and related questions. I responded by VM and email: Xylene is a common solvent used with epoxy and you do not need to stop the contractor from using it, unless the epoxy and application process are not NSF 61 approved for use in drinking water. Any epoxy or paint used needs to be NSF 61 approved. Consider asking for proof of NSF 61 approval for any paint or epoxy used. You are correct that Ethylbenzene and Xylene can be detected in water after tanks are lined with epoxy. The detected levels in August were very low total Xylene was 0.00460 mg/l (the MCL is 10.0 mg/l)-- Ethylbenzene was 0.000530 mg/l (the MCL is 0.700 mg/l) Proper curing will help reduce the amount of Ethylbenzene, xylene and other chemicals in the water. Flushing the tank is probably helpful too. We do not have specific requirements for testing the tanks before putting back online but we would strongly recommend it. You should submit it as a special sample. ACTION NEEDED: System will continue to sample for Ethylbenzene and xylene.

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