Vermont Watershed Management in DEC at ANR


Newly Reported Overflow
Facility Name:
Facility Number:
PermitID:
Submission Number: HN6-19AX-9AD6D
Current Status: Deemed Complete
SubVersionID: fd72ad6d-285a-45df-a948-73d2b3927ca8
Location: Bennington WWTF, 244 Harrington Road, North Bennington, VT 05257
Caller Name And Title: Ronald L. Bull, Bennington WWTF Chief Operator and Gail C. Tiffany, Bennington WWTF Laboratory Director
Incident Start Date: 07/01/2017
Incident End Date: 07/02/2017
Contact Name And Title For Public: Terrance A. Morse, Bennington Water Resources Superintendant
Public Contact Phone Number: 802-442-1037
Incident Start Time: 09:00 pm
Incident End Time: 09:06 am
Estimated Volume: 10,000 to 100,000 gallons
Nature Of Incident: Discharged partially treated undisinfected effluent
Cause Of Discharge: High Flows
Type Of Obstruction:
Point Of Discharge: WWTF outfall
Corrective Action Taken: See above description. -- Water continues to recede and we will try to investigate further where manhole surcharges occurred in the community. A further report will be filed no later than Wednesday, July 5th, 2017 outlining incident.
Waterbody Impacted: Walloomsac River
Description Of Incident: Heavy rains came through area approximately 9 pm on 7/1/17 causing flow at WWTF to rise. Rain over period of incident was 3.47 inches. All four main raw sewage pumps came on to handle flow. Unfortunately some partially treated wastewater discharged from top of RBC tanks and flowed across back field to Walloomsac River. Flow at 9 am on 7/2/17 was still 10.25 MGD (all the pumps will handle; wet well was at 17 feet during high point of incident) with all 4 main raw sewage pumps operating. Operators put RBC Row 4 which was out-of-service back online to fill therefore stopping tank overflows. -- We also experienced several manhole overflows in both Bennington and North Bennington with unestimated untreated wastewater going to waters of the State (tributaries to Walloomsac River). -- Situation was unavoidable due to weather conditions.