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Facility Name:
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Sherburne FD 1
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Caller Name And Title:
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John Gates Chief Operator
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Municipality:
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SFD #1
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Location (street or site):
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107 Dean Hill Rd. treatment facility. The Roaring Brook adjacent to the treatmen
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Incident Start Date:
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11/23/2025
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Incident End Date:
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11/24/2025
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Incident Start End Times:
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09:35 pm to 02:43 am
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Estimated Duration Of Event:
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Nature Of Incident:
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Other
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Estimated Volume (gallons):
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12500
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Cause Of Discharge:
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Pump Malfunction
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Type Of Obstruction:
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Point Of Discharge:
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Other
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Corrective Action Taken:
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The electrician discovered that a fuse had blown that supplies the power to the parco controls. This fuse had blown a few weeks earlier while the electrician was working on the panel for a different issue related to the parco valves. We replaced it with a fuse we had in storage. Before this we had never had this particular fuse blow and didn't realize everything it controlled. He put in a slightly larger fuse (8 amp) that we had because the 5amp that was needed we didn't have on hand. He instructed me to get more 5apm fuses and replace the 8amp that he put in to get us back operating. We should have the 5amp fuses today or tomorrow and will replace the 8amp with a new 5amp. There is no clear reason for this fuse to have blown. We had no evidence of a power spike or surge that evening. No other equipment in the plant had any issues and our generator did not run. The electrician doesn't have an explanation either. Without being here when it happened there's really no way of determining what caused the fuse to blow. In the future we will affix a note to this control panel explaining that if the parco valves lose power to check this fuse and we will make sure we have some extras on hand.
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Waterbody Impacted:
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Roaring Brook
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Contact Name And Title For Public:
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John Gates Chief Operator
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Call Date:
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WW Staff Called:
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Type Of Notification:
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nForms
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Public Overflow Report For Web:
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Y
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Description Of Incident:
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At around 9:00pm on Sunday November 23, 2025 we received an alarm alerting us to a eff. or inf. high level. I called one of our operators and he arrived at the plant at 9:20pm and discovered that the effluent pumps would not run and apparently had a power supply issue . The pumps themselves had power but not the parco valves. The parco valves are what control pump operation and they run on a 220 volt circuit which was dead for some reason. We started pumping the eff. well down with a two inch submersible to relieve pressure off the plant and prevent an untreated or chlorinated overflow. Since we were pumping from our eff. well the discharge had been fully treated and chlorinated and de-chlorinated and was the same Effluent that we would have sent to our permitted outfall area on the Ottauquechee River 3 miles away. The 2" discharge was running to a catch basin in our driveway that emptied roughly 50' away into the Roaring Brook. The Roaring Brook is a smaller tributary of the Ottauquechee and eventually connects to the Ottauquechee a few hundred yards before our outfall. We ran this 2" pump from 9:35pm 11/23/25 to 2:43am 11/24/25. I've estimated the flow rate of the 2" pump to be around 40gpm. I've come to this estimation by using calculations made from our prior use of this pump in the past and by using calculations from our flow chart. By using this 40gpm and the roughly 313 minutes that the 2" pump ran I calculate the unpermitted discharge to be around 12,500 gallons. I called our electrician around 9:30pm to let him know we had a problem and to make sure I could reach him. Once I got to the plant I called him again around 10:20pm and asked him to start heading to the plant. He arrived at around 2:30am Monday 11/24/25 and within a few minutes he had power restored to the parco valves and we stopped the 2" pump at 2:43am and started using the effluent pumps for discharge to the outfall.
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nForm Submission Number:
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HQH-C5S2-KV2AZ
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