NC0050342_Annual Performance_20200827

Winston-Salem/Forsyth County
LJti I ities
Water•Wastewater•Solid Waste
Administration,P.O.Box 2511,Winston-Salem,NC 27102
0:336-727-8000, F:336-727-8432,wsfcutilities.org
August 27, 2020
Mr.Jeff Poupart, Supervisor
North Carolina Department of Environmental Quality RECEIVED
PERCS Unit
1617 Mail Service Center AUG 2 8 2020
Raleigh, North Carolina 27699-1617
NCDEQ/DWitiNPOES
Re: 2019-2020 System Performance Report
Winston-Salem/Forsyth County Utilities
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, 2019, through June 30, 2020.
This report was made available to the public by publishing a "Notice of Availability" in the Wednesday,
August 26, 2020,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.
Sincerely,
CM/11416 ----.
Courtney L. Driver, P.E.
Utilities Director
PC: Corey Basinger, WSRO
Frank Crump, Wastewater Treatment Superintendent
City Council:Mayor. ,Mayor mpore,Northeast Wms,North Ward;Dan Besse,Southwest Ward;Robert C.Clark,
West Ward;John C.Larson,Allen SouthJoines; WVivian ard;H.Jeff MBurkeacintosh,Pro NorthwestTe Ward;Annette Scippard;Deniseio,EastD.Ward;lames Taylor,Jr.,Southeast Ward;City Manager:Lee D.Garrity
County Commissioners:David R.Plyler,Chair;Don Martin,Vice Chair;Fleming El-Amin;Ted Kaplan;Richard V.Linville;Tonya McDaniel;Gloria D.Whisenhunt;County
Call 311 or 336-727-8000 Manager Dudley Watts,Jr.
Winston-Salem/Forsyth County Utility Commission:Randall S.Tuttle,Chair;L.Wesley Curtis,Jr.,Vice Chair;Harold E.Day;Tom Griffin;Yvonne H.Hines;Duane Long;
[e-mail] Hugh W.Jernigan;Chris Parker;James Ruffin;Donald R.Stewart;Allan Younger

Winston-Salem/Forsyth County Utilities
Wastewater Collection and Treatment System
Performance Report for FY2019-2020
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, 2019
through June 30, 2020. 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 1,780 miles of sewer lines,49 pumping stations,and one
chemical odor control station. During the period covered by this report a total of 13.370 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 Archie Elledge WWTP under Permit WQ0029804. The biosolids
dryer facility produced 7,122.63 dry tons of pelletized biosolids during FY2019-2020 which were
beneficially applied to farmland. The water system has three additional NPDES permits, one
associated with each water treatment plant. The Swann Water Treatment Plant (WTP) operates
under General Permit NCG590003, the Thomas WTP under NPDES Permit NC0079821 and the
Neilson Plant 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 885.11 dry tons of residuals were hauled from the Neilson
WTP and applied on farmland in Davidson County. A total of 479.14 wet tons were hauled from
the Thomas WTP to Hanes Mill Road Landfill.
Archie Elledge WWTP and the Biosolids Dryer Facility reported no violations of their permit
limits during the reporting period. Muddy Creek WWTP had one permit violation 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 3.75. The bar chart in
Appendix B shows the performance of the wastewater treatment plants during this period.
Approximately 34,333 tons of regulated pollutants were removed by the treatment processes
during the period ending June 30, 2020.

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. Utilities' goal is to have zero sanitary sewer overflows
(SSO) from the wastewater collection system. However, during the last fiscal year, 77 events
totaling 0.00323% of the wastewater collected was spilled/overflowed from the sanitary sewer
system. This is a combined total of 54 reportable and 23 non-reportable spills. Appendix A and D
of this report lists a detailed summary of plant and collection system overflows reported in
FY2019-2020.
Since the passage of the North Carolina Clean Water Act in 1999 the total annual SSOs have been
tracked against the baseline year of FY1998-1999 (Appendix C). 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, FY2019-2020 has resulted in one
of the lowest reported SSO years(77)since reporting began in 1999. Our success in reducing SSOs
also includes the 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 also uses this same data to help develop future capital projects to alleviate
the cause of repeat issues. In 2019, Utilities staff attended the NC-AWWA-WEA
Collections/Distribution System Schools where staff obtained three levels of certification in
wastewater collections.
Utilities is in the midst of a Collection System Improvement Program, which helps 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) are
tracked in the City of Winston-Salem's 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 WinCan, which integrates with Cityworks.
Essentially all of the information that we collect from the field is seamlessly entered into our
preventative maintenance scheduler tool (COTools) 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 key strokes. This information also helps CityLink convey issues to the
customer in a timelier manner.
The major causes of SSO occurrences in FY2019-2020 were attributed to root intrusion, grease
deposits and debris accumulation. Because of this, additional funding was approved for FY2020
to provide for more preventative cleaning of the collection system. This effort has reduced the
occurrences of SSOs by preemptively targeting areas prone to the three major causes. In FY2019-
2020, Utilities cleaned more than 393 miles, which is 22% of the 1,780 mile gravity wastewater
collection system. In-house personnel cleaned 693,580 linear feet of publicly owned/maintained
sewer lines and contracted crews cleaned 1,383,360 linear feet at a cost of$1,175,467.50, with an
increasing focus on our large diameter sewer mains. Of the 393 miles that were cleaned, 77% or
approximately 303 miles were proactively cleaned by in-house and contracted crews.For FY2019-
2020 the goal is to continue to increase the portion of proactive cleaning and to exceed our overall
internal 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 conducted outreach via community events and 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 proactively 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 FY2019-2020, Utilities continued its proactive efforts toward the reduction of SSOs by
spending over $11 million on the rehabilitation of 434,241 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 access points for storm water runoff and groundwater to enter the wastewater
collection system. In addition, Utilities performed closed circuit TV inspection of 710,218 linear
feet of sewer mains. Staff and contractors also improved access to the collection system through
inspection and mowing/clearing of approximately 20 miles of easements.
Winston-Salem/Forsyth County Utilities launched its "No Wipes in Pipes" campaign in April
2020. The campaign is an effort to encourage citizens to not flush wipes and other products in the
toilet. The campaign includes social posts, English and Spanish fliers, and two informational
videos. Several local broadcast news organizations ran news stories about the importance of
protecting wastewater systems by not flushing wipes down the toilet.
Lastly, staff continued to actively identify and plan for projects in an effort to reduce SSOs and
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 to be treated, thereby reducing overall operating
costs.
As always, customer involvement will continue to be a factor in the reduction of S SOs. All
customers can do their part in helping to keep the wastewater collection system free of materials
that cause blockages by not dumping debris and fats, oils, or grease into the system.
To report a wastewater spill, please contact the City of Winston-Salem 24—hour customer
service line (CityLink) at [phone]. For questions regarding our programs or additional
information regarding this report,please contact Gale Ketteler,Utilities Public Information Officer
at(336)747-7414. 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 Department's website at https://www.cityofws.org/1309/Reports-
Policies.

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.
COU
Date: 8/25/2020
Courtney L. Driver, P.E. Utilities Director
Winston-Salem/Forsyth County Utilities

Appendix A: Wastewater Treatment Plant and Pump Station Overflow/Spill Information
Fiscal Year 2019-2020
Number of
Number of Volume of NPDES Permit
Flow Discharged From Overflow Events Overflows, Violations at
Month/Year Treatment Plants, Gallons Reported gallons Treatment Plants
July 2019 995,100,000 0 0 0
August 2019 968,130,000 0 0 0
Sept.2019 902,400,000 0 0 0
October 2019 1,035,710,000 0 0 0
November 2019 1,035,300,000 0 0 0
December 2019 1,192,880,000 0 0 0
January 2020 1,274,410,000 0 0 0
February 2020 1,422,160,000 1 400 1
March 2020 1,159,400,000 0 0 0
April2020 1,055,700,000 0 0 0
May 2020 1,279,370,000 0 0 0
June 2020 1,049,400,000 0 0 0
ANNUAL TOTAL 13,369,960,000 1 400 1
Notes:
2/2020—Muddy Creek WWTP had a NPDES permit violation for exceeding the permitted monthly
flow of 21 MGD due to excessive amounts of rainfall in the Muddy Creek basin.
2/19/2020—Archie Elledge WWTP had a spill of 400 gal of non-potable water from a hose which
slipped out of a tank onto the ground. The spilled water didn't make it into Salem Creek.

Appendix B:
Wastewater Treatment Efficiency During FY2019-20
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Appendix C: Fiscal Year 2019-2020 Performance Summary of Wastewater Collection System
SSO w/> Total
1000 gal in SSO w/>15,000 Wastewater SSO
Total No. Notice of Surface gal in Surface Total SSO Collected** Percentage of
Month/Year of SSO's Violations waters* waters Volume(gal) (gal.) Total
July-19 5 0 0 0 98 995,330,000 0.000014%
August-19 2 1 0 0 501 968,120,000 0.00052%
September-19 9 0 2 0 7,690 887,420,000 0.00087%
October-19 6 1 2 1 20,302 1,035,660,000 0.0019%
November-19 6 0 1 0 4,590 1,053,000,000 0.00043%
December-19 3 1 0 0 852 1,192,880,000 0.000071%
January-20 7 0 0 0 935 1,274,820,000 0.000073%
February-20 15 3 3 3 107,685 1,422,190,000 0.0075%
March-20 6 1 1 1 52,957 1,159,360,000 0.0045%
April-20 9 1 0 0 3,399 1,055,570,000 0.00032%
May-20 2 2 2 2 231,600 1,279,630,000 0.018%
June-20 7 0 0 0 1,210 1,049,490,000 0.00011%
2019-2020 77 10 11 7 431,819 13,373,470,000 0.0032%
Annual Total
2018 2019 70 13 10 1 94,583 13,762,950,000 0.0007%
Annual Total
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 12,083,570,000 0.0013%
Annual Total
2014-2015 86 49 12 I 127,405 10,753,560,000 0.0012%
Annual Total
2Annu 1 Total 013-2014
82 30 15 0 106,384 11,840,630,000 0.0009%
2012-2013
Annual Total 111 38 13 2 144,549 11,331,870,000 0.0013%
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
Annual Total 106 77 16 3 1,840,134 12,291,330,000 0.0150%
2008-2009 117 88 20 0 85,433 11,607,400,000 0.0007%
Annual Total
2007-2008 129 N/A 31 1 142,412 11,473,040,000 0.0012%
Annual Total
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 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 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
*See Appendix D (attached) for a complete listing of locations, Sanitary Sewer Overflow(SSO) 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.

1999-2000 Annual Total 189 N/A 119 9 1,154,350 12,289,000,000 0.0094%
*See Appendix D (attached) for a complete listing of locations, Sanitary Sewer Overflow (SSO) 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.

SSO Occurrences attributable to: For FY 2019-2020 Percentage Quantity total
Grease 18 6.44% 27,972
Roots 9 0.59% 2,564 1
Debris 28 1.97% 8,543
Inflow& Infiltration 0 0.0% 0
Vandalism 1 0.12% 525
Pipe Failure 8 0.97% 4,200
Pump Station Equipment Failure 1 0.57% 2,500
Severe Natural Causes 9 89% 386,555
Other 3 0.34% 1,455
TOTAL 77 100% 434,314

Appendix D:
Probable Cause of Total SSO SSO Volume in
Month/Year SSO Volume al Surface waters Location of SSO
Jul 2019
7/5/2019 ARV Failure 5 0 6758 Linwood Dr.
7/14/2019 Roots 15 0 6718 Linwood Dr.
7/15/2019 Roots 20 20 6655 Lake Dale Way
7/17/2019 Roots 33 0 3305 Peters Creek Pkwy
7/27/2019 Debris 25 0 7932 Lasater Rd.
Total for July 5 98 20
AUGUST 2019
8/2/2019 Debris 1 0 3325 Rosemont Ave.
8/9/2019 Debris 500 500 495 Arbor Hill Rd.
Total for August 2 501 500
SEPTEMBER 2019
9/3/2019 Pipe Failure 50 50 1332 Calvert Dr.
9/3/2019 Debris 225 68 4870 Thales Rd.
9/5/2019 Grease 75 50 2201 Reynolda Rd. 1
9/7/2019 Debris 25 0 4545 Glen High Rd.
9/18/2019 Pipe Failure 3,300 3,300 Allen Dr.&Old Greensboro Rd.
9/24/2019 Other 755 0 45 Cherry Cove Dr.
9/26/2019 Debris 2,840 2,840 (Outfall)Peters Creek Pkwy
9/27/2019 Other 400 0 707 Whispering Brook Rd.
9/30/2019 Pipe Failure 20 20 1312 Calvert Dr.
Total for September 9 7,690 6,328
OCTOBER 2019
10/12/2019 Roots I 0 4216 Yeaton Glenn Cir
10/12/2019 Debris 1 0 788 Beeson Rd.
10/20/2019 Grease 125 125 3300 New Greensboro Rd.
10/23/2019 Pipe Failure 50 50 125 Frazier Road
10/31/2019 Debris 2,125 1,594 1796 Silas Creek Pkwy
10/31/2019 Severe Natural Causes 18,000 18,000 4561 Cooper Rd.
Total for October 6 20,302 19,769
NOVEMBER 2019
11/1/2019 Grease 10 0 4420 Ansley Dr.
1 11/10/2019 Grease 75 75 346 West Wall St.
11/19/2019 Grease 300 150 103 Autumn Oaks Circle.
11/19/2019 Grease 50 25 130 Alpine Court
11/22/2019 Roots 180 0 4920 Old Walkertown Rd.
11/25/2019 Grease 3,975 3,975 2914 Shorefair Dr.
Total for November 6 4,590 4,225
DECEMBER 2019
12/22/2019 Grease 168 168 3481 Tinley Park Dr.
12/24/2019 Debris 652 137 702 West Mountain Rd.
12/28/2019 Debris 32 0 7744 Northpoint Blvd.
Total for December 3 852 305

JANUARY 2020
1/17/2020 Debris 10 10 3501 Plaza Ridge Circle
1/21/2020 Pipe Failure 80 80 151 Edgeway Drive
1/22/2020 Debris 5 1 4311 Cooperfield Ridge Lane
1/23/2020 Debris 15 0 151 Edgeway Dr.
1/26/2020 Other 300 0 240 Ashbourne Lake Ct.
1/28/2020 Debris 450 50 607 Daffodil
1/31/2020 Debris 75 75 Intersection of Luther and Anderson
St.
Total for January 7 935 216
FEBRUARY 2020
2/4/2020 Grease 30 15 1820 Dunleith Ave.
2/6/2020 Severe Natural Causes 35 0 237 Staffordshire Rd.
2/6/2020 Severe Natural Causes 20 0 240 Staffordshire Rd.
2/7/2020 Grease 100 100 5680 Novack St..
2/8/2020 Roots 465 465 3975 Leinbach Drive
2/8/2020 Debris 375 375 1428 Glade St..
2/11/2020 Severe Natural Causes 30,000 30,000 5644 Shattalon Dr,
2/13/2020 Roots 50 50 49 Arita Circle
2/13/2020 Severe Natural Causes 36,000 36,000 6640 Shattalon Dr.
2/13/2020 Severe Natural Causes 39,800 39,800 4561 Cooper Rd.
2/13/2020 Severe Natural Causes 200 200 Behind 3686 Reynolda Rd.
2/24/2020 Grease 10 0 2055 Waterford Village Rd.
2/24/2020 Debris 150 150 1577 Robert Ward Dr.
2/28/2020 Debris 150 150 723 Ivy Ave.
2/29/2020 Roots 300 300 143 Woodrow Ave.
Total for February 15 107,685 107,605
MARCH 2O20
3/3/2020 Debris 7 1 3203 Briarcliffe Rd.
3/25/2020 Severe Natural Causes 52,500 52,500 4561 Cooper Rd.
3/26/2020 Debris 70 0 407 Jefferson St.
3/26/2020 Debris 25 5 1275 Terry Rd.
3/28/2020 Debris 70 14 1003 William Dr.
3/31/2020 Debris 285 10 1006 14th St.
Total for March 6 52,957 52,530
APRIL 2020
4/3/2020 Grease 150 12 2371 University Pkwy
4/7/2020 Debris 225 225 716 Indeneer Dr.
4/8/2020 Grease 504 328 1640 Cherry Blossom Ln.
4/13/2020 Grease 150 0 3736 Ogburn Ave.
4/19/2020 Grease 450 450 3410 Healy Dr.
4/20/2020 Debris 81 8 234 Silver Creek Trail
4/26/2019 Debris 39 0 401 Robbins Rd.
4/28/2020 Pipe Failure 300 300 125 Pratt Rd.
4/28/2020 Roots 1,500 1,500 105 Waddington Rd.
Total for April 9 3,399 2,823

MAY 2020
5/22/2020 Severe Natural Causes 210,000 210,000 4561 Cooper Rd.
5/26/2020 Grease 21,600 21,600 4093 Greene Haven Dr.
Total for May 2 231,600 231,600
JUNE 2020
6/2/2020 Debris 10 0 1339 Glenn Oaks Rd.
6/3/2020 Vandalism 525 100 4260 Brownsboro Rd.
6/3/2020 Grease 150 150 4401 Bent Tree Farm Rd.
6/15/2020 Pipe Failure 100 100 1640 SM Ceasar Dr.
6/18/2020 Grease 50 0 4093 Greene Haven Rd.
6/23/2020 Debris 75 50 1202 Fairchild Rd.
6/28/2020 Pipe Failure 300 300 800 Rich
Total for June 7 1,210 700
2020 77 431,819 426,621