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HomeMy WebLinkAboutWQCS00003_Annual Performance Report_20230905Winston-Salem / Forsyth County Utilities Water • Wastewater • Solid Waste Administration, P.O. Box 2511, Winston-Salem, NC 27102 336-727-8000 • wsfcutilities.org August 28, 2023 Jeff Poupart, Supervisor RECEIVED North Carolina Department of Environmental Quality PERCS Unit 1617 Mail Service Center Raleigh, NC 27699-1617 SEA' @ 5 A23 NCDEQ/DWR/NPDES Re: FY 2022-2023 System Performance Report Winston-Salem/Forsyth County Utilities Dear Mr. Poupart, Enclosed you will find our annual performance report for the Winston-Salem/Forsyth County Utilities wastewater collection and treatment system as mandated by the North Carolina Clean Water Act of 1999. This report covers the period from July 1, 2022 to June 30, 2023. Our report was made available to the public by publishing a Notice of Availability in the August 28, 2023 Winston-Salem Journal. A copy of that legal ad is enclosed and the Affidavit of Publication will be emailed upon receipt. Copies of this report can also be obtained at the front desk of Stuart Municipal Building, 100 E. First St., at the Forsyth County Central Library, by calling City Link 336-727-8000 and at cityofws.org/wwreports. Please call me at 336-747-7315 if you have any questions. Sincerely, Courtney L. Driver, P.E. Utilities Director Cc: Michael Stover, P.E., Deputy Director -Operations Bill Brewer, Deputy Director -Water & Wastewater Treatment Keith Jones, Wastewater Treatment Superintendent Kenny Atkins, Utilities Field Operations Manager Antonio Martinez, Assistant Field Operations Manager -Wastewater System ORC File YOUR LINK TO UTY SERVICES City Council: Mayor Allen Joines; Mayor Pro Tempore Denise D. Adams, North Ward; Barbara Hanes Burke, Northeast Ward; Robert C. Clark, West Ward; John C. Larson, South Ward; Leff Maclntosh, Northwest Ward; Kevin Mundy, Southwest Ward; Annette Scippio, East Ward; James Taylor, Jr., Southeast Ward; Interim City Manager Patrice Toney County Commissioners: Chair Don Martin; Vice Chair Gloria D. Whisenhunt; Dan Besse; Richard V. Linville; Tonya D. McDaniel; David R. Plyler; Malishai CALL 311 ( 336-727-80001 Woodbury; County Manager Dudley Watts, Jr. TEXT: 855481-UNK(54651 Winston-Salem/Forsyth County Utility Commission: Chair L. Wesley Curtis, Jr.; Vice Chair Chris Parker; Simpson O. Brown, Jr.; Stephen Doughton; Harold citylink@cityofwaory Eustache; Tom Griffin; Yvonne H. Hines; Hugh W. Jernigan; Duane Long; Calvin McRae; Charles Wilson NOTICE OF AVAILABILITY Annual Performance Report for Wastewater Collection & Treatment Systems Fiscal Year 2022-2023 Effective October 1, 1999, all wastewater facilities that collect or treat wastewater must notify the public of wastewater spills. The second part to this rule requires the owner or operator of the wastewater treatment/collection systems to provide an annual report to its users, customers and the North Carolina Department of Environmental Quality. This report summarizes the performance of the treatment works/collection systems and states the extent to which any terms of its permit, federal laws, or any state laws, regulations or rules related to the protection of water quality have been violated. The Fiscal Year 2022-2023 Annual Performance Report for WSFC Utilities Wastewater Collection and Treatment Systems will be available to the public at the front desk of Stuart Municipal Building, 100 E. First St., at the Forsyth County Central Library, by calling City Link 336-727-8000 and at cityofws.org/wwreports. Winston-Salem Journal: Aug. 28, 2023 RECEIVED SEP 05 -023 NCDEQ/DWP/NPDES Winston-Salem Journal Advertising Affidavit Account Number 3280080 Date August 28, 2023 WINSTON SALEM/FORSYTH COUNTY UTILITIES PO BOX 2511 WINSTON-SALEM, NC 27102 PO Number Order Category Description 0000845232 Legal Notices NOTICE OF AVAILABILITY Annual Performance Report for Wastewater Collection 8 Publisher of the Winston-Salem Journal Before the undersigned, a Notary Public duly commissioned, qualified, and authorized by law to administer oaths, personally appeared the Publisher's Representative who by being duly sworn deposes and says: that he/she is authorized to make this affidavit and sworn statement; that the notice or other legal advertisement, a copy of which is attached hereto, was published in the Winston-Salem Journal on the following dates: 08/28/2023 and that the said newspaper in which such notice, paper document, or legal advertisement was published, was at the time of each and every such publication, a newspaper meeting all the requirements and qualifications of Section 1-597 of the General Statutes of North Carolina. '(signature ojperson making affidavit) Swom to and subscribed before me the 28 th day of At n (Notary Public) State of Virginia Richard A. Hundley County of Hanover Nntar,, Ftj!Dlic My commission expires: �:rtary f'rgrsr�rsi tec ; a, � :, , Gonimissior� cx� Jan 3l.2024 THIS IS NOT A BILL. PLEASE PAY FROM INVOICE. THANK YOU (k /C 0 ",\ 0 V'-"--) NOTICE OF AVAILABILITY Annual Performance Report for Wastewater Collection & Treatment Systems Fiscal Year 2022.2023 Effective October 1, 1999, all wastewater facilities that collect or treat wastewater must notify the public of wastewater spills. The second part to this rule requires the owner or operator of the wastewater treatment/collection systems to provide an annual report to its users, cus- tomers and the North Carolina Department of Environmental Quality. This report summarizes the performance of the treatment works/collection systems and states the extent to which any terms of its permit, federal laws, or any state laws, regulations or rules related to the protection of water quality have been violated. The Fiscal Year 2022-2023 Annual Performance Report for WSFC utilities Wastewater Collection and Treatment Systems will be available to the public at the front desk of Stuart Municipal Building, 100 E. First St., at the Forsyth County Central Library, by calling City Link 336-727.8000 and at cityofws.org/wwreoom. WSJ: August 28, 2023. Carolina Classified Marketplace 336-727-7425 Monday, August 28, 2023 WINSTON-SALEM JOURNAL B7 YMENT TRANSPORTATION�SRVIG1jDIRECTORY WINSTON-SALEM (4011MM( (4XJOURNAL LEGAL NOTICES LEGAL NOTICES Legal Notices Legal Notices NOTICE OF AVAILABILITY Annual Performance Report for Wastewater Collection & Treatment Systems Fiscal Year 2022.2023 Effective October 1, 1999, all wastewater facilities that collect or treat wastewater must notify the public of wastewater spills. The second part to this rule requires the owner or operator of the wastewater treatment/collection systems to provide an annual report to its users; cus- tomers and the North Carolina Department of Environmental Quality. This report summarizes the performance of the treatment works/collection systems and states the extent to which any terms of its permit, federal laws, or any state laws, regulations or rules related to the protection of water quality have been violated. The Fiscal Year 2022-2023 Annual Performance Report for WSFC Utilities Wastewater Collection and Treatment Systems will be available to the public at the front desk of Stuart Municipal Building, 100 E. First St., at the Forsyth County Central Library, by calling City Link 336-727-8000 and at a1i_oofws.omwwreoorts. WSJ: August 28, 2023. AUTOMOTIVE Automobiles For Sale 1W . M9 Agape Used Auto Mart Ilc 945 South Church St. We have a variety of high quality pre -owned cars, trucks, suvs, import and domestic vehicles. Free carwash for 1st 3 months when you purchase a car. We provide on the lot financ- ing. Buy here pay here, ,tradi- tional financing. Bad credit, good or no credit. We can put you in a car ji- !rs__ Appendix B: Wastewater Treatment Efficiency FY 2022-23 Tons of Regulated Pollutants 18,000 16,000 14,000 12,000 10,000 8,000 6,000 4,000 2,000 0 16,038 3,272 ■ Received at Treatment Plants 775 * Allowed in Discharge by Division of Water Quality ■ Actually Discharged by Treatment Plants An annual activity summary for the WSFC Utilities Mercury Minimization Plan can be viewed at citVofws.org/2723/Dental-Amalgam-Discharges. 5 Appendix C: Performance Summary of Wastewater Collection System — FY23 Month/Year Total No. of SSOs Notice of Violations SSO w/ >1, rf ace gal in Surface Waters* SSO w/ >15,000 gal in Surface Waters Total SSO Volume (gal) Total Wastewater Collected (gal.) SSO Percentage of Total July 2022 3 1 2 0 15,700 1,027,560,000 0.00153% August 2022 7 2 2 1 90,525 1,024,580,000 0.00884% September 2022 1 0 0 0 200 997,560,000 0.00002% October 2022 4 0 0 0 800 976,760,000 0.00008% November 2022 4 1 1 0 8,536 1,001,310,000 0.00085% December 2022 5 1 2 1 61,500 1,145,550,000 0.00537% January 2023 9 1 1 1 33,775 1,139,470,000 0.00296% February 2023 8 4 4 0 33,759 1,052,170,000 0.00321% March 2023 11 0 0 0 1,941 1,269,400,000 0.00015% Apri12023 4 0 0 0 2,030 1,260,940,000 0.00016% May 2023 3 0 0 0 0160 1,220,540,000 0.00002% June 2023 2 0 0 0 400 1,191,730,000 0.00003% ANNUAL TOTAL 61 10 12 3 249,356 13,307,570,000 0.0019% *See Appendix D for a complete listing of locations, Sanitary Sewer Overflow (SSO) Totals and SSO "Volume in Surface Waters" for all spills during this fiscal year. SSO occurrence attributable to: For FY23 Cause Percentage by Total Gallons Percentage by Volume Grease 13 21% 16,046 6% Roots 11 18% 2,795 1 % Debris 21 34% 17,315 7% Inflow & Infiltration 0 0% 0 0% Vandalism 0 0% 0 0% Pipe Failure 9 15% 109,740 44% Lift Station Equipment Failure 0 0% 0 0% Severe Natural Causes 0 0% 0 0% Other 4 7% 79,760 32% Bypass Pump Failure 3 5% 23,700 10% ANNUAL TOTAL 61 100% 249,356 100% Appendix A: Wastewater Treatment Plant and Lift Station Overflow/Spill Information — FY23 Month/Year Flow Discharged from Treatment Plants, gallons Number of Overflow Events Reported Volume of Overflows, gallons Number of NPDES Permit Violations at Treatment Plants July 2022 1,012,270,000 0 0 0 August 2022 988,540,000 0 0 0 September 2022 952,780,000 0 0 0 October 2022 977,990,000 0 0 0 November 2022 1,001,030,000 0 0 0 December 2022 1,144,620,000 0 0 0 January 2023 1,169,070,000 0 0 0 February 2023 1,052,820,000 0 0 0 March 2023 1,094,990,000 0 0 0 Apri12023 1,087,840,000 0 0 0 May 2023 1,048,440,000 0 0 0 June 2023 1,017,240,000 0 0 0 ANNUALTOTAL 12,547,630,000 0 0 0 Annual Performance Summary of Wastewater Collection System SSO w/ SSO w/ Total No. Notice of >1,000 gal in >15,000 gal in Total SSO Total S50 Fiscal Year of SSOs Violations Surface Surface Volume (gal) Wastewater Percentage Collected (gal.) of Total waters waters 2022-2023 Annual Total 61 10 12 3 249,356 13,307,570,000 0.0019% 2021-2022 Annual Total 55 9 14 2 163,396 12,428,880,000 0.0013% 2020-2021 Annual Total 74 23 15 5 2,251,327 13,873,680,000 0.0162% 2019-2020 Annual Total 74 10 11 7 431,819 13,373,470,000 0.0032% 2018-2019 Annual Total 93 13 10 1 96,998 13,762,950,000 0.0007% 2017-2018 Annual Total 92 12 15 0 70,378 11,323,130,000 0.0006% 2016-2017 Annual Total 88 12 14 0 38,956 11,707,700,000 0.0003% 2015-2016 Annual Total 124 12 15 0 161,510 12,083,570,000 0.0013% 2014-2015 Annual Total 151 49 12 1 130,543 10,753,560,000 0.0012% 2013-2014 Annual Total 133 30 15 0 102,276 11,840,630,000 0.0009% 2012-2013 Annual Total 166 38 13 2 153,280 11,331,870,000 0.0013% 2011-2012 Annual Total 179 61 10 0 74,612 11,289,980,000 0.0006% 2010-2011 Annual Total 156 76 15 0 103,274 11,328,410,000 0.0009% 2009-2010 Annual Total 165 77 16 3 1,809,931 12,291,330,000 0.0150% 2008-2009 Annual Total 188 88 20 0 98,346 11,607,400,000 0.0008% 2007-2008 146 N/A 31 1 141,737 11,473,040,000 0.0012% Annual Total 2006-2007 Annual Total 161 N/A 40 8 571,946 12,475,820,000 0.0046% 2005-2006 159 N/A 46 3 317,585 12,182,250,000 0.0026% Annual Total 2004-2005 211 N/A 49 3 246,290 12,621,450,000 0.0020% Annual Total 2003-2004 241 N/A 69 2 322,050 12,822,200,000 0.0025% Annual Total 2002-2003 269 N/A 116 16 2,305,175 13,408,980,000 0.0172% Annual Total 2001-2002 Annual Total 228 N/A 70 1 338,806 11,467,900,000 0.0030% 2000-2001 Annual Total 193 N/A 84 4 533,108 11,930,700,000 0.0045% 1999-2000 Annual Total 189 N/A 119 9 1,154,350 12,289,000,000 0.0094% Appendix D: Details of Wastewater Collection System — FY23 Month/Year JULY 2022 Probable Cause of SSO Bypass Failure Total SSO Volume (gal) 12,500 SSO Volume in Surface Waters 6,500 Location of SSO 3201 Lowery St. 7/22/2022 7/25/2022 Residential Grease 3,000 1,500 4239 Brownsboro 7/30/2022 Residential Grease 200 0 4444 Winterberry Ridge Ct. Total for July AUGUST 2022 8/5/2022 3 Debris 15,700 150 8,000 150 1455 Fairchild Rd. 8/11/2022 Other 50 0 140 Stoney Brook Blvd. 8/13/2022 Debris 225 0 158 Linbrook Dr. 8/15/2022 Debris 100 100 158 Linbrook Dr. 8/18/2022 Pipe Failure 10,400 10,400 531 Harper St. 8/25/2022 Other 79,500 79,500 415 West Northwest Blvd. 8/29/2022 Roots 100 50 3856 Reynolda Rd. Total for August SEPTEMBER 2022 9/8/2022 7 Other 90,525 200 90,200 0 8040 Glengarriff Rd Total for September OCTOBER 2022 10/5/2022 1 Debris 200 50 0 25 2001 Pitsburg Ave. 10/18/2022 Debris 700 500 486 E. Fourth St. 10/26/2022 Residential Grease 50 25 932 Mar Don Hills Total for October NOVEMBER 2022 11/3/2022 4 Pipe Failure 800 8,250 550 8,250 311 N. Patterson Ave. 11/14/2022 Roots 200 200 4994 Keehleen Ave. 11/14/2022 Roots 10 0 4470 Greenmeadows Cir. 11/14/2022 Commercial Grease 76 38 3651 Penn Ave. Total for November DECEMBER 2022 12/12/2022 1 4 Roots 1 8,536 1,350 1 8,488 1,350 555 Manning Woods Dr. 12/15/2022 Debris 50 25 276 Torrence Dr. 12/23/2022 Commercial Grease 200 100 1150 Butler St. 12/24/2022 Pipe Failure 59,850 59,850 650 Cavell Ct. 12/29/2022 Roots 50 50 112 Alpine Ct. Total for December JANUARY 2023 1/5/2023 5 Commercial Grease 61,500 100 60,375 50 3435 Robinhood Rd 1/6/2023 Bypass Failure 300 0 628 Lantern Ridge Dr. 1/10/2023 Roots 450 350 109 Shadylawn Dr. 1/12/2023 Debris 300 0 5209 University Pkwy. 1/12/2023 Bypass Failure 10,900 0 628 Lantern Ridge Dr. 1/13/2023 Pipe Failure 21,500 18,275 455 Cherry Cove Dr. • September 22, 2022: City of Winston-Salem University presentation included our FOG and wipes information, plus outdoor demos of the CCTV system and jet -vac truck. • October 15,2022: International Village sponsorship booth promoted FOG/wipes campaigns and spin -to -win prizes. • November -December 2022: Water -sewer Did you know? bill message: Grease and so-called flushable wipes cause costly raw sewage backups in your home. Avoid the mess and expense: CAN the GREASE and NO WIPES in PIPES. Only Push the four Ps: Pee, Poop, Puke and (toilet) Paper! Visit cityofws.org/grease and cityofws.org/nowipes for details. • November 4, 2021: Can the Grease was featured at a turkey fry demonstration by the Winston-Salem Fire Department with coverage from television news outlets in the market. • November 16, 2022, and December 22, 2022: TWO holiday -focused Can the Grease and No Wipes in Pipes news releases, social media and web NEWS. • April 22, 2023: Earth Day Fair provided nonstop engagement for approx. 5,000 attendees with wrapped CCTV truck wrapped with FOG/wipes campaign, literature, activity sheets and spin -to -win prizes. • March -April 2023: Colorful Can the Grease two-sided English/Spanish bill insert included in water -sewer bill. • March 2023: Forsyth Creek Week sponsorship, water plant tour and Jamboree events promoted FOG/wipes campaigns and spin -to -win prizes. • June 17, 2023: Juneteenth Festival educated an estimated 6,500 guests about the expensive mess and hazards created by grease and wipes. Prize wheel engagement included Can the Grease promo items as prizes. Our English -Spanish Plumber Responsibilities sheet, Good Neighbor Policy brochure and webpages at citvofws.org/gnp help educate the public about the benefits of a backwater valve device. Lastly, staff continued to identify and plan for projects to reduce SSOs, as well as infiltration and inflow into the wastewater collection system. In addition to the benefits of reducing SSO volume and the reduction of water getting into the system, these projects have the added benefit of decreasing the amount of wastewater treated, thereby reducing overall operating costs. To report a wastewater spill, please contact the City of Winston-Salem 24-hour customer service line (CityLink) at 336- 727-8000. For questions regarding our programs or additional information regarding this report, please contact Gale Ketteler, Utilities Public Information Officer at 336-747-7414 or gketteler@cityofws.org. Copies of this report may be requested from CityLink at 336-727-8000. This report is also available at the Forsyth County Central Library and at citvofws.org/wwreports. 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 concerns using the publicly owned wastewater collection and treatment facilities under the direction of Winston-Salem/Forsyth County Utilities and that those persons or concerns have been notified as to the availability of this report. Date:8/28/2023 Courtney L. Driver, P.E. Utilities Director Winston-Salem/Forsyth County Utilities 8 3 incorporative use of Geographic Information Systems (GIS) with our computer maintenance management system, Cityworks. Together, GIS and Cityworks can display historical work order information which allows our crews to respond to areas where issues have repeatedly occurred. Management uses this same data to help develop future capital projects to alleviate the cause of repeat issues. WSFC Utilities completed Year 7 of the Collection System Improvement Program, which helps prioritize and schedule our collection system preventative maintenance measures based on inspections conducted in the field. Inspections ranging from routine cleaning to closed-circuit television (CCTV) are tracked in Cityworks. To collect more uniform data and to make crews more efficient, we have also upgraded both of our CCTV camera systems to WinCan, which integrates with Cityworks. All the information collected from the field is seamlessly entered into our recently upgraded preventative maintenance scheduling tool (FreeFlowH2O) and a decision -making process is streamlined for cleaning, rehabilitation and/or replacement of our collection system infrastructure. By having these new systems in place, our field personnel can identify and submit information directly to the supervisor with a few keystrokes. This information also helps CityLink, our customer service call center, convey issues to the customer in a timely manner. Major causes of SSO occurrences in FY23 were attributed to grease deposits, debris accumulation and root intrusion. Because of this, funding was approved for FY23 to provide for more preventative cleaning of the collection system. This effort has reduced occurrences of SSOs by preemptively targeting areas prone to the three major causes. WSFC Utilities cleaned more than 340 miles, which is nearly 19% of the 1,825-mile gravity wastewater collection system. In-house personnel cleaned nearly 95 miles of publicly owned/maintained sewer lines and contracted crews cleaned 250 miles at a cost of $1,521,835. Of the 340 miles that were cleaned, 77% or approximately 260 miles were proactively cleaned by in-house and contracted crews. For the next fiscal year, the goal is to continue to increase proactive cleaning efforts and to exceed our overall internal goal by cleaning 18% of the entire gravity collection system. In 2003, a Grease Interceptor Ordinance was adopted which regulates the operation and maintenance of residential, commercial, and industrial grease trap interceptors. This ordinance alone has been effective in reducing the amount of grease related SSOs since its adoption. In 2003, the total number of SSOs spiked at 269; the following year that number dropped by nearly 30 SSOs and the count of SSOs has declined steadily since that time. While this ordinance has been effective, further assistance from the public is necessary to completely solve this problem. Over the past year, WSFU Utilities personnel have conducted outreach following sewer backups to educate customers in those areas on the proper disposal of cooking grease, fats and other oils. In addition, maintenance personnel have been cleaning the publicly maintained portions of sewer connections to keep sewer main lines clean and free of grease as well as tree roots and debris. During FY23, WSFC Utilities continued its efforts toward the reduction of SSOs by spending more than $4.4 million on the rehabilitation of 29,493 feet of gravity sewer mains, 102 manholes, and 120 service laterals. The rehabilitated sewer mains primarily ranged in size from 6" to 15". The mains were rehabilitated by means of pipe bursting, cured -in -place lining of pipes, total replacement, or a combination of these methods. The enhanced condition of rehabilitated sewer mains and manholes not only contributed to the reduction of SSOs, but also aided in the reduction of infiltration and inflow by decreasing and/or eliminating access points for storm water runoff and groundwater to enter the wastewater collection system. In addition, WSFC Utilities performed CCTV inspection of 333,564 linear feet of sewer mains. Staff and contractors also improved access to the collection system through inspection and mowing/clearing of approximately 31 miles of easements. As always, customer involvement plays an important role in the reduction of SSOs. WSFC Utilities continues the Can the Grease and No Wipes in Pipes campaigns to educate the public on the hazards of dumping fats, oils or grease (FOG) in drains and flushing wipes and other non -biodegradable products down the toilet. Some of our outreach efforts are detailed below. No Wipes in Pipes helps customers of all ages realize the "bottom line" is you should only flush the Four Ps: Pee, Poop, Puke & (toilet) Paper. See cityofws.org/nowipes and cityofws.org/grease. • September 10, 2022: FIESTA sponsorship booth promoted FOG/wipes campaigns, English/Spanish coloring books and spin -to -win prizes like Can the Grease branded spatulas, can lids, magnet clips, potholders, towels, etc. Month/Year Probable Cause of SSO Total SSO Volume (gal) SSO Volume in Surface Waters Location of SSO 1/25/2023 Roots 100 100 1550 Yelton 1/27/2023 Roots 75 38 420 Hearthside 1/30/2023 Debris 1 50 1 25 1 2530 Somerset Dr. Total for January FEBRUARY 2023 2/5/2023 9 Residential Grease 33,775 9,600 18,838 4,800 493 Brookrideg Dr. 2/6/2023 Pipe Failure 8,550 8,550 1069 E. Kent Rd. 2/7/2023 Residential Grease 600 0 3439 Highpoint Rd. 2/13/2023 Debris 120 120 2209 S. Broad St. 2/13/2023 Debris 50 0 2744 Sawgrass Dr. 2/19/2023 Debris 5,400 5,400 121 Reynolda Village 2/19/2023 Debris 9,350 9,350 1856 Runnymede Rd. 2/21/2023 Roots 89 89 121 Reynolda Rd. Total for February MARCH 2O23 3/1/2023 8 Pipe Failure 33,759 300 28,309 300 313 N. Cherry St. 3/2/2023 Other 10 10 1328 Diggs Blvd. 3/4/2023 Roots 109 109 2463 Autum Mist Dr. 3/6/2023 Roots 262 262 1065 Deepwoods Ct. 3/7/2023 Pipe Failure 120 120 132 Braford Place Ln. 3/10/2023 Debris 50 50 860 Trade St.( 10"&Oak St.) 3/24/2023 Pipe Failure 750 750 1101 Norvista Cove 3/25/2023 Debris 150 150 3141 Prytania Rd. 3/26/2023 Debris 150 150 920 Wellington Rd. 3/28/2023 Debris 20 0 1550 Yelton Ln. 3/30/2023 Debris 20 0 2050 Silas Creek Pkwy Total for March APRIL 2023 4/3/2023 11 Residential Grease 1,941 950 1,901 285 630 Brookwood Business Park 4/9/2023 Residential Grease 850 850 497 Morro Dr. 4/25/2023 Debris 150 75 3749 North Liberty St. 4/28/2023 Residential Grease 80 80 2050 Big House Gaines Total for April MAY 2023 5/1/2023 4 Pipe Failure 2,030 20 1,290 20 305 East Mountain St. 5/2/2023 Residential Grease 40 20 2820 Burlwood Dr. 5/4/2023 Debris 100 25 1545 Gaston St. 5/15/2023 Debris 30 0 4332 Country Club Rd. Total for May JUNE 2023 6/7/2023 3 Debris 190 100 65 100 1069 Hawthorne Rd. 6/12/2023 Residential Grease 300 0 5025 Elitha Dr. Total for June 2 400 100 FY 2022-2023 r 61 249,356 I 218,116 I I Winston-Salem/ Forsyth County 2 9 RECEIVED Winston-Salem / Forsyth County Uti I itlilles Water • Wastewater • Solid Waste wsfcutilities.org Winston-Salem / Forsyth County U tio I i tio le s Water • Wastewater • Solid Waste SEP 05 ;323 NCDEQ/DWR/NPDES Wastewater Collection & Treatment System — Performance Report for Fiscal Year 2022-2023 This report is published annually and released to our customers in accordance with the requirements of the North Carolina Clean Water Act of 1999 and provides information on the Publicly Operated Treatment Works (POTW) and Collection System operated by Winston-Salem/Forsyth County Utilities (WSFC Utilities). It covers the period of July 1, 2022, through June 30, 2023 (FY23). WSFC Utilities operates two wastewater treatment plants with a combined treatment capacity of 51 million gallons per day. The wastewater collection system includes 1,825 miles of sewer lines and 45 lift stations. During the period covered by this report, a total of 13.3 billion gallons of wastewater was collected and treated at these facilities. WSFC Utilities staff works hard to meet or exceed the requirements mandated by the North Carolina Clean Water Act and the requirements of the National Pollutant Discharge Elimination System (NPDES) permits that regulate the operation of the treatment plants, the disposal of our biosolids, and the operation and maintenance of our collection system. We continue to send staff to Collection and Wastewater Treatment Plant Operator schools to obtain the appropriate certification and training. The wastewater collection system operates under NPDES Permit WQCS00003. The Archie Elledge Wastewater Treatment Plant (WWTP) operates under NPDES Permit NC0037834 and the Muddy Creek WWTP operates under NPDES Permit NC0050342. The treatment and disposal of residual biosolids produced by the plants is accomplished by anaerobic digestion followed by processing in a biosolids drying facility at the Archie Elledge WWTP under Permit WQ0029804. The biosolids dryer facility produced 5,980 dry tons of pelletized biosolids during FY23 which were beneficially applied to farmland. The water system has three additional NPDES permits, one associated with each water treatment plant. Swann Water Treatment Plant (WTP) operates under General Permit NCG590003, Thomas WTP under Permit NC0079821 and Neilson WTP under Permit NC0086011. All three water plant permits operated within compliance of their permit conditions during this performance period. The treatment process at the water treatment plants generates a Class -A residual that is land applied under Permit WQ0031314. During this compliance period, a total of 645.5 dry tons of residuals were hauled from Neilson WTP and applied on farmland in Davidson County. A total of 129.39 dry tons were hauled from Swann WTP and applied on farmland in Yadkin County. Thomas WTP hauled 622.1 dry tons of residuals to the city -owned and operated Hanes Mill Road Landfill. Archie Elledge and Muddy Creek WWTPs and the Biosolids Dryer Facility reported no violations of their permit limits during the reporting period. The two wastewater treatment plants met the minimum requirements imposed by the State of North Carolina's Division of Water Resources by a safety factor of 4.2. The bar chart in Appendix B shows the performance of the wastewater treatment plants during this period. Approximately 15,263 tons of regulated pollutants were removed by the treatment processes in FY23. The remainder of this document includes details about monitoring system discharges and overflows from our wastewater collection system and preventative maintenance programs established to prevent potential problems. WSFC Utilities' goal is to have zero sanitary sewer overflows (SSO) from the wastewater collection system. However, during the last fiscal year, 61 events totaling 0.0019% of the wastewater collected was spilled/overflowed from the sanitary sewer system. Appendix A and D of this report list a detailed summary of plant and collection system overflows reported in FY23. Since the passage of the North Carolina Clean Water Act in 1999 the total annual SSOs have been tracked against the baseline year of FY 1998-1999 (Appendix Q. Diligence by maintenance personnel performing preventative maintenance continued to be a major factor contributing to reducing SSOs since the baseline year. In fact, FY23 has resulted in the second -lowest reported SSO year (61) since reporting began in 1999. Our success in reducing SSOs also includes the 10