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Newly Reported Overflow
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Facility Name:
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Facility Number:
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PermitID:
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Submission Number:
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HQJ-A4R8-GY9K8
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Current Status:
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Deemed Complete
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SubVersionID:
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37c177f2-25aa-4b37-9290-6ec894dd6cc6
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Location:
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Effluent discharge outfall is roughly 500 ft downstream of GMP hydroelectric plant.
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Caller Name And Title:
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Nick Geneva - Wastewater Chief
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Incident Start Date:
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12/23/2025
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Incident End Date:
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01/20/2026
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Contact Name And Title For Public:
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Kyle Thornton
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Public Contact Phone Number:
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8023421900
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Incident Start Time:
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08:00 am
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Incident End Time:
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10:40 am
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Estimated Volume:
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5300000
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Nature Of Incident:
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Discharged treated and partially disinfected effluent
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Cause Of Discharge:
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Other - Please describe in Description of Incident
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Type Of Obstruction:
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Point Of Discharge:
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WWTF outfall
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Corrective Action Taken:
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After receiving notice of the first violation of 11,000 ecoli we deep cleaned our u.v bank, replaced all bulbs and the system seemed to be working properly. After learning our repeat sample came back at over 3,000 we cleaned the weir that is in-between the sample point and the UV lights. We also disinfected the sump pit that all drainage flows into in the building (it is pumped into the weir after the lights).
Update 1-12-26
We have been running on Bank B. We discovered that the butterfly valves on each side of bank A were both failing and raw effluent was making its way into the channel. Both valves have been replaced eliminating further contamination from that point.
Old tuberculated piping that leaves the u.v bank and ties into the channel has all been replaced with c900 on both U.V banks. We have chlorinated the system from the lights to the weir allowing the chlorine solution to sit for about 24 hours, then scrubbed the channel walls and floor along with the baffle and weir. All of the chlorinated water was pumped into totes, nothing was dishcharged into Otter Creek.
Update- the butterfly valves for the other u.v bank that was offline were both failing due and raw effluent was getting into the weir, mixing with the disinfected effluent from the bank that has been in operation. Valves have been ordered and both banks are in operation. We have deep cleaned the weir again.
Update- We hired an electrician to diagnose any issues we are having with the ballasts and it was found that several ballasts were failing, imbalanced voltages were being sent to the bulbs. The bulbs were on but not emitting the frequency needed for disinfection.
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Waterbody Impacted:
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Otter creek
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Description Of Incident:
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Our effluent ecoli sample taken on 12/23/25 resulted in 11,000 ecoli.
Our repeat sample taken on 12/30/25 came back at 3200 ecoli.
On 1/5/26 our repeat sample was 380 ecoli.
On 1/6/26 our repeat sample was 210 ecoli.
On 1/8/26 our repeat sample was 2000 ecoli.
On 1/13/26 our repeat sample was 1200 ecoli.
On 1/15/26 our repeat sample was 1700 ecoli.
On 1/20/26 our repeat sample was <1 ecoli.
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