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HomeMy WebLinkAboutnc0021253_NOV-2020-PC-0146 Response_20200722PUBLIC SERVICES DEPARTMENT 104 OUTER BANKS DRIVE PO BOX 368 HAVELOCK, NC 28532 252-444-6409 www.HavelockNC.US Fax 252-444-2616 July 22, 2020 Mr. Robert Tankard Mr. David May NCDEQ — Division of Water Resources Water Quality Regional Operations Section 943 Washington Square Mall Washington, NC 27889 Re: Notice of Violation &Intent to Assess Civil Penalty Tracking Number: NOV-2020-PC-0146 Permit No. NCO021253 — Havelock WWTP — Craven County Robert and Paul, Thank you for your assistance with this project. The City of Havelock is responding to the Notice of Violation and Intent to Assess Civil Penalty, dated March 23, 2020. On the night of March 6, 2020, the City received a high alarm from the wemco well during a rainfall event. As a result, I arrived on site with WWTP Operator James Carter, along with an electrical contractor. In the rain and lightning, it was not clear where the outage was but we discovered the utility side of the power was on. However, a breaker to the large wemco well pumps was tripped. The electrical contractor inspected the well, electrical panel, and control panel and suggested pump one "exploded," possibly from a lightning strike. We put the second VS wemco pump back in service. However, in the time that it took to locate the issue in the severe weather conditions, the well capacity was exceeded and a SSO occurred. We immediately secured two 8-inch Godwin pumps to provide by-pass volume as needed, with only one pump in the wemco well. As a result, the entire WWTP staff and Collections (lines) staff were brought to the site to maximize cleanup efforts. After the SSO, the controls, electrical, and vfd were re -inspected. We have pulled the 4,000 lb, 67 hp pump from the well. Our plans are to replace the pump with a variable speed pump and VF drive. Unfortunately, this pump failure occurred at the onset of the COVID-19 pandemic and the lead time on the $60,000 replacement pump is five months. The City has two by-pass pumps, which will remain on -site until the failed pump is replaced. We feel confident that this event was an "Act of God" and beyond our control; however, we are diligently maintaining and observing the system and are anxious to return the well to normal operating conditions. Thank you aga n and please let me lrnow if you have any additional concerns. jue gerP.E. of Havelock Public Services Director