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HomeMy WebLinkAboutNC0069761_FY 23-24 Annual Wastewater Report (2)_20240729Town of Beech Mountain Wastewater Collection and Treatment System Performance Report 2023-2024 Fiscal Year This report provides information on the collection and treatment system operated by the Town of Beech Mountain Public Utilities Department. Summarized herein is general information and performance data covering the period from July 1, 2023 to June 30`', 2024. A copy of this report is available to the public upon request. Please direct questions about this report to the Public Works and Utilities office at (828) 387-9282. Collection and Treatment System Description The Town of Beech Mountain Wastewater collection and treatment system consists of approximately 60 miles of sewer pipe, five lift/pump stations, and two treatment plants. The Town collection system is operated under Permit # WQCS00210. The Town is permitted to treat wastewater at two facilities: Pond Creek Wastewater Treatment Plant (PCWWTP) and Grassy Gap Creek Wastewater Treatment Plant (GGCWWTP). The Pond Creek WWTP operates under National Pollutant Discharge Elimination System (NPDES) Permit # NC0069761. Wastewater is collected via a gravity system with two pump stations to a 0.400 million gallons per day extended aeration treatment plant with LTV disinfection. No tonnage of biosolids for FY 2023-2024 have been disposed of. The Town maintains a Biosolids Disposal DCAR Residuals Management Systems Land Application Permit WQ0002523. The Grassy Gap Creek WWTP operates under NPDES Permit # NC002273. Wastewater is collected via a gravity system with two pump stations to a 0.080 million gallons per day extended aeration treatment plant with C 12 disinfection. Combined, the facilities have a treatment capacity of 0.480 million gallons/day. Reference Table 1 and Table 2 for Discharge Monitoring Report Statistics. Performance Summary Between July 1st, 2023, and June 30th, 2024, Wastewater Treatment facilities had the following Violations in the fiscal year. Pond Creek WWTP NCO069761 Sample Location Parameter 001 Effluent Flow Date 9/30/2023 MonitorinE Frequency Continuous Type of Violation Frequency Violation Sample Limit Reported Location Parameter Date Value Value Type of Violation 001 Effluent Nitrogen, Ammonia Total 9/30/2023 2 2.26 Monthly Average Exceeded 001 Monthly Geometric Mean Effluent Coliform, Fecal MF, MFC Broth 1/31/2024 200 227.97 Exceeded 001 Effluent BOD, 5-Day 2/29/2024 30 35.4 Monthly Average Exceeded 001 Monthly Geometric Mean Effluent Coliform, Fecal MF, MFC Broth 2/29/2024 200 289.86 Exceeded 001 Effluent BOD, 5-Day 3/2/2024 45 52.5 Weekly Average Exceeded 001 Effluent Nitrogen, Ammonia Total 4/30/2024 2 3.54 Monthly Average Exceeded 001 Effluent Nitrogen, Ammonia Total 5/31/2024 2 3.39 Monthly Average Exceeded The Town of Beech Mountain Collection system reported a Notification of Discharge of Untreated Wastewater to Pond Creek in Watauga County NC on April 11th and 12th, 2024 of approximately 50,732 gallons to NCDEQ. The cause of the spill was determined to be an excessive rainfall event of at lease 2 inches of rainfall during a severe period in the storm resulting in the inability of the treatment plant to contain the incoming volume. The 2022 Water and Sewer Rehabilitation Project is underway. This project focuses on the replacement and rehab as well as many manhole repairs in 17,000 feet of sewer main in the continuing effort to reduce inflow and infiltration to our system. Project completion is expected by November 2025. The Utility continues to plan for future repairs in our system and ask for customer involvement in reducing SSO volume and the reduction of water getting into the system. Help us to keep the system free of materials that cause blockages by not dumping debris, fats, oils, or grease into the system. To report a sewer spill, please contact the Town of Beech Mountain Emergency Dispatch at 828-387-2342. For questions regarding the Town Utilities programs or additional information regarding this report, please contact Mr. Daniel Davis, Utilities Director at (828) 387-9282. Copies of this report may be obtained by calling Public Works at (828)387-3828 and requesting a copy or Town Hall at (828) 387-4236 and requesting a copy. This report is also available at the town website, TownofBeechMountain.com, https://townofbeechmountain.com/water- sewer/#water-reports. This document includes details about monitoring system discharges and overflows from our system, the preventative maintenance program the Commission has established to prevent potential problems and the degree to which we complied with State and Federal standards during the fiscal year ending June 30, 2024. Certification of Accuracy I certify under penalty of law that this report is complete and accurate to the best of my knowledge. I further certify that this report has been made available to all persons or customers of the Town of Beech Mountain Municipal water and sewer system and have been notified of the availability of this report. Oamd e,Z 6. 9Date 7/24/2024 Daniel Davis Public Utilities Director Town of Beech Mountain Appendices: Table 1: Pond Creek WWTP Effluent Flow Monthly Statistics. Total effluent flow discharged from treatment plant is measured in million gallons (MG). Min, max and average daily values are represented in units of millions of gallons per day (MGD). Pond Creek WWTP Total MG Min MGD Max MGD Average MGD Jul `23 4.898 .090 .303 .158 August 123 6.47 .100 .470 .208 September '23 3.297 .080 .140 .109 October `23 3.351 .080 .157 .108 November `23 2.835 .060 .154 .094 December `23 8.509 .090 .920 .274 Janua `24 11.842 .170 1.09 .382 Februar `24 9.81 .170 .620 .327 March `24 7.75 .130 .550 .250 April 124 6.519 .070 .680 .217 Ma `24 5.394 .070 .550 .174 June `24 3.178 .170 .010 .106 Table 2: Grassy Gap WWTP Effluent Flow Monthly Statistics. Total effluent flow volume is measured in million gallons (MG). Min, max and average daily values are represented in units of millions of gallons per day (MGD). Grassy Gap WWTP Total flow MG Min MGD Max MGD Average MGD Jul `23 1.34 .013 .105 .043 August `23 1.752 .014 .166 .056 September `23 .642 .007 .038 .021 October `23 .640 .007 .038 .019 November `23 .405 .004 .029 .013 December `23 1.535 .008 .393 .049 Janua `24 2.682 .024 .271 .086 Februar `24 1.98 .029 .168 .066 March 124 1.86 .012 .257 .060 April 124 2.061 .015 .263 .068 May 124 2.08 .019 .238 .067 June `24 .676 .04 .014 .023