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HomeMy WebLinkAboutNC0050342_Annual Performance PN_20190829Winston-Salem r Forsyth County 4i" w City/County Utilities Water r Sewer - Solid Waste Disposal August 27, 2018 Utilities Administration Mr. Jeff Poupart, Supervisor North Carolina Department of Environmental Quality City of Winston-Salem P.0.Box 2511 PERCS Unit 1617 Mail Service Center RECEIVED/DENR/DWR Winston-Salem, NC 27102 City Link311 (336.727.8000) Raleigh, North Carolina 27699-1617 AUG 2 9 2018 Fax 336.727.8432 ISRIXIIC%t�IDfWLO/� Re: 2017-2018 System Performance Report Water Resources Winston-Salem/Forsyth County Utilities Permitting Section Dear Mr. Poupart: Attached are the original and two copies of the annual performance report for 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, 2017, through June 30, 2018. This report is being made available to the public by publishing a "notice of availability" in the Monday, August 20, 2018, Winston-Salem Journal and a notice is being included in each of our water and sewer bills informing our customers as to how they can obtain a copy of the report. A copy of the advertisement and the "affidavit of publication" of the notice are also attached. In addition, the report is being posted on our website and a copy made available at the Forsyth County Public Library. Please call me at (336) 747-7315 if you have any questions regarding this matter. Courtney river, P.E. Citv/County Utilities Director PC: Corey Basinger, WSRO Frank Crump, Wastewater Treatment Superintendent city Cossssrik Mic" mines. Mayor, NW n H. Burkr. %la}rr. N —l—, Nmrhnu ward: D rskx D. Adams. North Ward; Dan Brsae, Sousbwest Want; Robert C. Clark, W_ Ward; John C_ Larson, South Ward; Jeff Mxlntosh. Nonhwest Ward: Derwin I.. %lonrgonsery. Fnn Want: Janus T*6r Je. Southeast Want; City Manger'. Lee D. Garrity Fmsytt Cotmty Con .xens David R. Ply1m Chai—, Ikon Vanin. Vics-Chau, Fknting U Anun; Tod Kaplan; Rkhmd V. Linvilk-. Gk via D. Whisenhunt'. Everette Witherspoon; Call 311 or 336-727-8000 County Tianagm. Dudky Wins. Jr. City/County Udlity Com isslons Rarsdaa S. Tustk. Chairman; Wesky Cords. Jr.. Vice -Chair. li.srokl E. Day; Tom (.ruin; Lkum Long; Paul S. Mecta; Chris Parker; citylinkQcityofws.org Jim Ruffin; Donal R. St—w Wit,tston-Salem Journal Advertising Affidavit CITYICOUNTY UTILITIES ADMINISTRATION PO BOX 2511 WINSTON-SALEM, NC 27102 PO Number Order Category ANNUAL PERF 0000492106 Legal Notices P.O Box 3159 Winston-Salem, NC 27102 Account Number 3280080 Date August 20, 2018 Description I NOTICE OF AVAILABILITY Annual Performance Report for Collection Systems Fiscal Year 2( Publisher of the Winston-Salem Journal Before the undersigned, allotary Public of Guilford, North Carolina, duly commissioned, qualified, and authorized by law to administer oaths, personally appeared the Publisher Representative who by being duly sworn deposes and says: that he/she is the Publisher's Representative of the Winston-Salem Journal, engaged in the publishing of a newspaper known as Winston-Salem Journal, published, issued and entered as second class mail in the City of Winston-Salem, in said County and State: 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 W instou-Sa(em Journal on the following dates: 08/20/2018 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 and was a qualified newspaper within the meaning of Section 1-597 of th ra Statutes of North Carolina. il" making affidavit) Sworn to and subscribed before me the 20 day of August, 2018 V�b LEA ANNE LAMB (NotaiyPublic) NOTARY PUBLIC GUILFORD COUNTY, NC My Commission Expires 06-15-19 THIS IS NOT A BILL. PLEASE PAY FROM INVOICE. THANK YOU Winston-Salem Forsyth County Utilities Wastewater Collection and Treatment System Performance Report for FY2017-2018 This report is published 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. It covers the period from July 1, 2017 through June 30, 2018. This report is published and released to our customers annually. Winston-Salem/Forsyth County Utilities (Utilities) operates two wastewater treatment plants (WWTPs) with a combined treatment capacity of 51 million gallons per day. The wastewater collection system includes approximately 1,770 miles of sewer lines, 50 pumping stations, and one chemical odor control station. During the period covered by this report a total of 11.324 billion gallons of wastewater was collected and treated at these facilities. Utilities staff work 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 actual operation of the treatment plants, the disposal of our biosolids, and the operation and maintenance of our collection system. The wastewater collection system operates under NPDES permit WQCS00003. The Archie Elledge 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 Elledge WWTP under Permit WQ0029804. The biosolids dryer facility produced 6,894 dry tons of pelletized biosolids during FY2017-2018, which were beneficially applied to farmland. The water system has three additional NPDES permits, one associated with each water treatment plant. The Swann WTP operates under General Permit NCG590003, the Thomas WTP under NPDES Permit NC0079821 and the Neilson Plant under permit NC0086011. All three of 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 331.66 dry tons of residuals were applied on farm land (83.03 dry tons from the Swann WTP and 248.63 dry tons from the Thomas WTP). The Archie Elledge WWTP, Muddy Creek WWTP and the biosolids dryer facility reported no violations of their permit limits during the reporting period as shown in Appendix A. 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 4.47. The bar chart in Appendix B shows the performance of the wastewater treatment plants during this period. Approximately 33,305 tons of regulated pollutants were removed by the treatment processes during the period ending June 30, 2018. The remainder of this document includes details about monitoring system discharges and overflows from our system, the preventative maintenance program established prevents potential problems and the degree to which we complied with State and Federal standards during the fiscal year ending June 30, 2018. Utilities' goal is to have zero sanitary sewer overflows (SSO) from the sewer collection system. However, during the last fiscal year, 65 events totaling 0.0006% of the wastewater collected was spilled/overflowed from the sanitary sewer system. Appendix A and D of this report lists a detailed summary of plant and collection system overflows reported in FY2017-2018. Since the passage of the North Carolina Clean Water Act in 1999 the total annual SSOs have been tracked against the baseline year of FY1998-99 (Appendix Q. Diligence by maintenance personnel toward preventative maintenance continued to be a major factor contributing to SSOs remaining at a lower level than that of the baseline year. In fact, FY2017-2018 has resulted in one of the lowest reported SSO years (65) since reporting began in 1999.Our success in reducing SSOs also includes the incorporative use of Geographic Information Systems (GIS) in our maintenance planning. The GIS application houses historical work order information which allows our crews to respond to areas where issues have repeatedly occurred. Management also use this same data to help develop future capital projects to alleviate the cause of repeat issues. In 2017, Utilities staff attended the NC-AWWA-WEA Collections/Distribution System School where staff were able to obtain three levels of certification in wastewater collections. Utilities is in the midst of a Collection System Improvement Project, which will help us prioritize and schedule our collection system preventative maintenance measures based on physical inspections from the field. Inspections ranging from routine cleaning to closed circuit television (CCTV) will be tracked in the City of Winston-Salem's newly implemented computerized maintenance management system; Cityworks. In an effort to collect more uniform data and to make crews more efficient, we have also upgraded both of our CCTV camera systems to Granite Net which cooperates with Cityworks. Essentially all of the information that we collect from the field will seamlessly be entered into our preventative maintenance scheduler tool (COTools) and a decision making process can be streamlined for cleaning, rehabilitation and/or replacement of our collection system infrastructure. By having these new systems in place, we are helping our field personnel literally bring information right to the supervisor with a few key strokes. This information will also help CityLink convey any issues to the customer in a very timely manner. The major causes of SSO occurrences in FY2017-2018 were attributed to root intrusion, grease deposits, and debris accumulation. Because of this, additional funding was approved for FY2019 to provide for more preventative cleaning of the collection system. Preventative cleaning of our collection system will reduce the occurrences of SSOs by preemptively targeting areas prone to the three major causes of SSOs. In FY2017-2018, Utilities cleaned over 519 miles, 30%, of the 1,734 mile gravity sanitary sewer collection system. Of the 519 miles that were cleaned, 76% or approximately 392 miles were proactively cleaned by in-house and contracted crews. For FY2017- 2018 the goal was to increase the portion of proactive cleaning and exceed our overall goal by cleaning 20% 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 made a steady decline 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, in-house personnel have reached out to the public via community events and other media opportunities in an effort to educate the public on the proper disposal of cooking grease, fats and other oils. In addition, maintenance personnel have been proactive by cleaning the publicly maintained portion of sewer connections and keeping sewer main lines clean and free of grease as well as tree roots and debris. This year, in-house personnel have cleaned 1,010,803 linear feet of publicly owned/maintained sewer lines and $1,322,465 was spent on contracted mainline cleaning which provided for cleaning of approximately 1,732,949 linear feet of sewer lines, with an increasing focus on our large diameter sewer mains. Also, chemical root control contract is anticipated to treat approximately 202,000 linear feet of sewer main in the upcoming fiscal year. During FY2017-2018, Utilities continued its proactive efforts toward the reduction of SSOs by spending over $11 million on the rehabilitation of 34,241 feet of gravity sewer mains, 143 manholes, and 125 service laterals. The sewer mains rehabilitated primarily ranged in size from 6" to 42". The mains were rehabilitated by means of pipe bursting, cured -in -place lining of pipes, total replacements, or a combination of any of these methods. The enhanced condition of these sewer mains and manholes provided by the rehabilitation projects not only contributed to the reduction of SSOs but also aided in the reduction of infiltration and inflow by reducing and/or eliminating sewer system access points for storm water runoff and groundwater. In addition, Utilities performed closed circuit TV inspection of 710,218 feet of sewer mains. Staff and contractors also improved the access to collection system through the inspection and mowing/clearing of approximately 20 miles of easements. Further, staff continued to actively identify and plan for projects in an effort to reduce SSOs and infiltration and inflow into the sewer 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 sewer to be treated thereby reducing overall operating costs. As always, customer involvement will continue to be a factor in the reduction of SSOs. All customers can do their part in helping to keep the sewer system free of materials that cause blockages by not dumping debris and fats, oils, or grease into the system. To report a sewer 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 Courtney L. Driver, P.E., Utilities Director at (336)747-7315. Copies of this report may be obtained by calling CityLink at (336)727-8000 and requesting a copy. This report is also available at all branches of the Forsyth County Public Library and it is posted on the Utilities Division's website at hgp://www.cityofws.org/departments/utilities/stats-reports. 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 reRort. Date Cou* C Jy L. Dbi er P"E. Utilities Director Winston-Salem/ o yth County Utilities Appendix A: Wastewater Treatment Plant and Pump Station Overflow/Spill Information Fiscal Year 2017-2018 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 2017 919,460,000 1 8.500 0 August 2017 945,190,000 0 0 0 Sept. 2017 91 1,100,000 0 0 0 October 2017 914,810,000 0 0 0 November 2017 868,200,000 0 0 0 December 2017 894,660,000 1 900 0 January 2018 943,640,000 0 0 0 February 2018 973,000,000 0 0 0 March 2018 1,041,910,000 0 0 0 April 2018 1,026,000,000 0 0 0 May 2018 1,012,460,000 0 0 0 June 2018 872,700,000 0 0 0 ANNUAL TOTAL 11,323,131,000 2 9,400 0 Notes: No NPDES permit violations at either wastewater treatment plant. 7/21/2017 - MCWWTP Temporary pumping system for plant upgrade on South Fork Influent Outfall failed spilling 8500 gallons of wastewater into South Fork Creek. 12/11/2017 - AEWWTP A Non -potable water line burst and spilled 900 gallons of partially treated wastewater into Salem Creek. Appendix B 35000 30000 25000 20000 Tons 15000 10000 5000 0 Wastewater Treatment Efficiency During FY2017-18 ®Tons Regulated Pollutants Received at Treatment Plants mTons Regulated Pollutants Allowed in Discharge by Division of Water Quality ©Tons Regulated Pollutants Actually Discharged by Treatment Plants Appendix C: Fiscal Year 2017-2018 Performance Summary of Sewer Collection System Month/Year Total No. of SSO's Notice of Violations SSO w/> 1000 gal in Surface waters* SSO w/> 15,000 gal in Surface waters Total SSO Volume al Total Sewer Collected** al. SSO Percentage of Total July-17 2 2 2 0 15,400 919,460,000 0.0017% August-17 2 0 1 0 2,087 945,190,000 0.0002% September-17 1 0 0 0 15 911,100,000 0.0000% October-]7 5 1 1 0 11,850 914,810,000 0.0013% November-17 5 1 1 0 2,788 868,200,000 0.0003% December-17 3 0 0 0 2,325 894,660,000 0.0003% January-18 10 1 1 0 4,350 943,640,000 0.0005% February-18 8 1 2 0 4,240 973,000,000 0.0004% March-18 5 2 2 0 4,637 1,041,910,000 0.0004% April-18 8 2 3 0 7,965 1,026,000,000 0.0008% May-18 I 11 1 2 1 0 1 7,450 1 1,012,460,000 0.0007% June-18 1 5 1 0 1 0 1 1,785 1 872,700,000 0.0002% 2017-2018 65 12 15 0 64,892 11,323,130,000 0.0006% Annual Total 2016-2107 62 12 14 0 35,774 11,707,700,000 0.0003% Annual Total 2015-2016 73 12 15 0 157,949 12083570000 0.0013% Annual Total 2014-2015 86 49 12 1 127,405 10,753,560,000 0.0012% Annual Total 2013-2014 82 30 15 0 106,384 11,840,630,000 0.0009% Annual Total 2012-2013 111 38 13 2 144,549 11,331,870,000 0.0013% Annual Total 2011-2012 117 61 10 0 65,273 11,289,980,000 0.0006% Annual Total 2010-2011 109 76 15 0 95,342 11,328,410,000 0.0008% Annual Total 2009-2010 106 77 16 3 1,840,134 12,291,330,000 0.0150% Annual Total 2008-2009 117 88 20 0 85,433 11,607,400,000 0.0007% Annual Total 2007-2008 Annual Total 129 N/A 31 1 142,412 11,473,040,000 0.0012% 2006-2007 161 N/A 40 8 571,946 12,475,820,000 0.0046% Annual Total 2005-2006 159 N/A 46 3 317,585 12,182,250,000 0.0026% Annual Total 2004-2005 Annual Total 211 N/A 49 3 246,290 12,621,450,000 0.0020% 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 228 N/A 70 1 338,806 11,467,900,000 0.0030% Annual Total 2000-2001 193 N/A 84 4 533,108 11,930,700,000 0.0045% Annual Total 1999-2000 189 N/A 119 9 1,154,350 12,289,000,000 0.0094% Annual Total 1998-1999 194 N/A 118 21 1,541,054 11,804,100,000 0.0131% Annual Total SSO Occurrences attributable to: For FY 2017-2018 Percentage Quantity total Grease 16 24.6% 16,735 Roots 14 21.5% 5,792 Debris 23 35.4% 16,185 Inflow & Infiltration 0 0.0% 0 Vandalism 0 0.0% 0 Pipe Failure 7 10.8% 12,355 Pump Station Eqpmnt. Failure 1 1.5% 2,500 Severe Natural Conditions 0 0.0% 0 Other 4 6.2% 11.325 TOTAL 65 100.0% 64,892 *See Appendix D (attached) for a complete listing of locations, SSO (Sanitary Sewer Overflow) Totals and SSO "Volume in Surface Water" for all spills during this fiscal year. **This is the total volume of treated waste discharged from the plant but is assumed to be equal to what is collected. Appendix D: Month/Year JULY 2017 7/13/2017 Probable Cause of SSO PIPE FAILURE Total SSO Volume al 6,900 SSO Volume in Surface waters 3,450 Location of SSO 7435 WATKINS FORD RD 7/21/2017 OTHER 8,500 7,000 4444 COOPER RD Total for July AUGUST 2017 8/2/2017 2 PIPE FAILURE 15,400 850 10,450 850 4576 FERNHAVEN CIR 8/2/2017 ROOTS 1,237 1,237 NB 421 & SILAS CREEK PKWY Total for August SEPTEMBER 2017 2 GREASE 2,087 15 2,087 15 719 COLISEUM DR 9/23/2017 Total for September OCTOBER 2017 10/2/2017 1 GREASE 15 100 15 50 3326 GRANDVIEW CLUB RD 10/3/2017 ROOTS 525 525 4708 TOLLEY CREEK DR 10/24/2017 GREASE 500 500 3810 WABASH BLVD 10/25/2017 GREASE 10,575 4,230 525 PERTH RD 10/30/2017 GREASE 150 150 1511 DEERFIELD CT Total for October NOVEMBER 2017 5 OTHER 11,850 225 5,455 225 102 OAKLAND AVE 11/7/2017 11/8/2017 ROOTS 825 825 100 CREEKSTONE CT 11/16/2017 PIPE FAILURE 125 125 801 RICH AVE 11/17/2017 GREASE 1,575 1,575 370 KNOLLWOOD ST 11/30/2017 ROOTS 38 38 136 SOUTHOAK DR Total for November DECEMBER 2017 5 ROOTS 2,788 150 2,788 I50 1221 MEADE LN 12/4/2017 12/14/2017 DEBRIS 25 25 2831 GALSWORTHY DR 12/21/2017 DEBRIS 2150 430 242 HAWTHORNE RD Total for December JANUARY 2018 1/2/2018 3 GREASE 2,325 100 605 100 0 OVERDALE RD 1/2/2018 GREASE 100 100 4050 NORTH BROAD ST 1/3/2018 DEBRIS 100 100 2981 SOUTH MAIN ST 1/6/2018 GREASE 50 50 1201 22ND ST 1/7/2018 OTHER 600 300 4389 STYERS FERRY RD 1/11/2018 DEBRIS 700 700 2047 BOWEN BLVD 1/16/2018 ROOTS 100 100 4013 WOODGROVE LN 1/16/2018 ROOTS 50 50 827 AUSTIN LN 1/16/2018 GREASE 50 50 1410 TRADE MART BLVD Month/Year Probable Cause of SSO Total SSO Volume al SSO Volume in Surface waters Location of SSO 1/25/2018 PUMP STATION FAILURE 2,500 2,500 3638 NORTH LAKESHORE DR Total for January FEBRUARY 2018 2/3/2018 10 ROOTS 4,350 20 4,050 20 5204 IVY STONE LN 2/5/2018 OTHER 2,000 2,000 911 EAST 4RTH ST 2/8/2018 DEBRIS 50 50 8 WEST ST 2/8/2018 DEBRIS 300 300 3771 YADKINVILLE RD 2/9/2018 ROOTS 400 400 4639 WALDEN DR 2/14/2018 GREASE 100 5 1383 UNDERWOOD AVE 2/21/2018 ROOTS 1,350 1,350 4910 CENTURY OAKS LN 2/23/2018 PIPE FAILURE 20 20 1900 NEW WALKERTOWN RD Total for February MARCH 2O18 3/6/2018 8 DEBRIS 4,240 2,650 4,145 2,650 601 N CHERRY ST 3/11/2018 DEBRIS 1,125 1,125 4573 SOUTH MAIN ST 3/22/2018 ROOTS 787 787 5033 HAYSTACK HILL RD 3/26/2018 ROOTS 50 10 4981 DELAND ST 3/27/2018 DEBRIS 25 25 801 CAMERON AVE Total for March APRIL 2018 4/10/2018 5 DEBRIS 4,637 2,475 4,597 2,475 5931 GRASSY CREEK BLVD 4/10/2018 GREASE 300 300 496 MORRO DR 4/12/2018 PIPE FAILURE 2,350 2,350 1001 REYNOLDA RD 4/16/2018 PIPE FAILURE 10 10 234 CAMERON AVE 4/20/2018 PIPE FAILURE 2,100 2,100 7012 BRIDGEWOOD RD 4/22/2018 DEBRIS 10 10 126 BROOKSTOWN AVE 4/24/2018 GREASE 70 70 713 MCCREARY ST 4/30/2018 DEBRIS 650 650 2565 PETERS CREEK PKWY Total for April MAY 2018 5/1/2018 8 DEBRIS 7,965 125 7,965 125 2565 PETERS CREEK PKWY 5/2/2018 DEBRIS 900 900 2254 PREMIER PARK LN 5/3/2018 GREASE 2,700 0 1809 FALCON TREE CT 5/5/2018 DEBRIS 450 450 HANCOCK DR & BRIMMER PLACE DR 5/7/2018 DEBRIS 200 200 1300 REYNOLDA RD 5/11/2018 DEBRIS 450 450 5130 TUTELO TL 5/14/2018 GREASE 200 150 1219 CHURTON ST 5/21/2018 DEBRIS 150 150 131 KNOTT ST 5/25/2018 DEBRIS 50 25 222 E 4RTH ST 5/29/2018 DEBRIS 2,125 2,125 700 JEFFERSON ST 5/31/2018 DEBRIS 100 100 601 N CHERRY ST f Month/Year Probable Cause of SSO Total SSO Volume (gal) SSO Volume in Surface Neater-. Location of, SSO Total for May JUNE 2018 6/1/2018 11 ROOTS 7,450 60 4,675 60 3912 YARBROUGH AVE 6/12/2018 GREASE 150 150 110 S STRATFORD RD 6/20/2018 ROOTS 200 50 6462 BEAVER POND CT 6/27/2018 DEBRIS 1,350 1,350 1647 ASHLEY SCHOOL CIRCLE 6/27/2018 DEBRIS 25 25 1785 CARRIAGE COVE LN Total for June 5 1,785 1,635 2018 65 64,892 48,467