OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00811
Who Was Contacted and Phone: Ken Hamilton (503) 843-2176
Contact Date: 10/07/2015
Contacted By: HOFELD, EVAN (REGION 1)
Contact Method/Location: Office
Reasons: SOCs
Details: SUMMARY: Detection of Pentachlorophenol less than 0.001 mg/l MCL DETAILS: An alert was generated 10/7/15 for entry point sampling at EP-B for Springs and Wells due to a detection of pentachlorphenol at 0.00011 mg/l. The MCL for pentachlorophenol is 0.001 mg/l. A routine consecutive quarterly sample at EP-B for pentachlorophenol on 6/23/15 and a confirmation sample at EP-B on 12/22/15 were both non-detect. Based on the three quarterly consecutive samples for the groundwater sources, it was deemed sufficient to resume sampling at a frequency of two consecutive quarterly samples taken every 3 years. ACTION NEEDED: Report detection in CY 2015 CCR and resume 3-year sampling.
Associated Alerts: CHEM6899 - 10/07/2015 - PENTACHLOROPHENOL

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