10,500 gallons of sewage overflows in Oak Grove
At around 7:30 p.m. Monday, Sept. 5, an estimated 10,500 gallons of sewage overflowed into storm drains near an Oak Lodge Water Services pump station.
David Mendenhall, superintendent of the sewage-treatment plant, said the overflow followed a power outage and an electronic issue while switching to backup generator power.
When the generator came on, pump controls initially tripped under a voltage code at 1706 S.E. Oak Shore Lane in Oak Grove. Within 20 minutes of the power outage, staff responded and resolved the issue by adjusting the voltage upward. Mendenhall said the generator will be serviced to determine the cause of the voltage malfunction.
Oak Lodge Water Services has posted warning signs, and the public was advised to avoid contact with the Willamette River downstream of river mile 20 for a minimum of 24 hours.
The overflow was reported to the Oregon Emergency Response System at 8:45 p.m. Sept. 5.
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