NC0024210_Annual Report_20190131

Public Services Department •
-_
A
NORTH CAROLINA'S INTERNATIONAL CITY"'
January 31, 2019
Christyn Fertenbaugh,PE
Environmental Engineer
NCDEQ DWR PERCS Unit
217 West Jones Street
Raleigh,NC 27603
Dear Ms.Fertenbaugh:
The City of High Point has begun seeing a return on our investment towards economic growth with the
residential, commercial and industrial development that we have been working hard to attract. On
November 28, 2018 , we were notified by the Winston-Salem Regional Office that the Riverdale Sewer
Lift Station was nearing its capacity and that we needed to stop adding flow to that basin until"expansion
is started and submit final plans and specifications for expansion, including a construction schedule".
Please note that this station was already under study for expansion and as such the City of High Point
submitted a request to rerate the station from 20 MGD to 22 MGD. (See attachment)
The Regional Office also advised us that"conditional approvals may be given with the understanding that
flow cannot be added to the basin until the expansion is complete and certified". The purpose of this
letter is to provide a brief synopsis of the station's current situation and the proposed expansion schedule,
so that conditional approvals with flow can be given not only for the City of High Point but Jamestown,
Sedgefield Sanitary District and the City of Greensboro.
The City of High Point incurred damage at the Riverdale Station during Hurricane Florence. As a result,
we have set up and are operating a full bypass system around the lift station through the existing force
main while repairs are being made.After discussion with the State during December the City decided that
while bypassing, we are also pursuing installation of a submersible pump (2 pumps — 1 is spare
) in the wet well providing an increase in capacity from 20 MGD to 30 MGD. Based on a 2.5 peaking
factor, this would bring the station's rated Average Daily Flow (ADF) capacity to 12 MGD, providing
ample capacity for the connection requests we have received thus far. To date, we have received requests
for additional .075 MGD or 75,000 GPD of flow that we need to accept to keep development moving
forward. It should be noted that the average FTSE annual increase in the last two years was only about
0.75 MGD and minimal flow increase has been seen from the increase.
We are currently studying the wet well flows and design parameters for pump installation. We would like
to permit the submersible pump installation in the next few weeks. We plan to start the procurement
process in February which will lead to the purchase and installation of the pump base,discharge pipe and
rails in April. At that point,we should be complete with the other wet well repairs and we will shut down
the bypass pumping. Currently,we are also designing electrical and structural improvements along with
the connection to the existing force main for the installation of the submersible pump. We anticipate this
installation will be complete in early fall 2019. The following is our proposed month by month schedule
for increase in station capacity.
City High Hi h Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261 USA
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Fax: [phone] Phone:[phone] TDD: 336.883.8517

Public Services Department 1 /5'
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6).
NORTH CAROLINA'S INTERNATIONAL CITY"'
Proposed Schedule and Estimated Timeline
January—Repairs to wet well, design submersible pump
February — Continue repairs to wet well, procure submersible pump, design of station
improvements, solicit for CMAR
March — Receive pump base and rails, continue repairs to wet well, complete design of station
improvements, initiate CMAR contract, submit for DWR permit.
April—Receive permit,begin interior wet well improvements (install pump base and rails)
May—Complete wet well improvements and stop bypass pumping
June - October - Complete pump installation and connection to existing force main, including
certification to expand station capacity to approximately 30 MGD
Also, the City intends to use an Alternate Delivery Method to accelerate the Riverdale Project. The City
will use Construction Manager at Risk (CMAR) option that we are currently using on one of our other
projects. This will allow a contractor to bid a guaranteed maximum price (GMP) at a minimum of 60
percent design drawings and if approved by the State to begin construction while final design is being
completed thereby accelerating the delivery time.
In addition to these improvements,we also are working to redirect the discharge from the Registers Creek
Sewer Lift Station around the Riverdale Lift Station to reduce the flows around Riverdale. This would
reduce the ADF at Riverdale by approximately .406 MGD not including future development. We also
plan to begin installation of a second force main within the next year that will provide redundancy to the
station force main. In the future, as we near capacity once again, we intend to replace the three existing
10 MGD pumps with 15 MGD pumps to increase the station capacity to 40 MGD (16 MGD). This
expansion is anticipated in about 5 years however preliminary design will begin now. The City currently
has four separate engineering companies under contract to fast-track all the processes list. They are: The
Wooten Company, Hazen, Davis-Martin-Powell and Freese and Nichols. Funding is available to perform
these improvements from local funds and bonds. Also, in addition to the above listed engineering firms
the City contracted with CDM Smith for a Sewer Master Plan update. In their studies they used in line
flow meters for real time data studies. In the area impacting the Riverdale station their studies indicate the
station is currently not overloaded and does not need to be expanded. To manage additional flows, CDM
Smith proposed several alternatives to pump station expansion including rehabilitation and diverting flow
from two upstream pump stations away from Riverdale. They also stated another 36-inch parallel force
main is not required. (See attached letter) However to be proactive and to support this request for
additional connections the City is moving forward on the installation of the submersible pump,the second
force main and redirecting the flow from Registers Creek Pump Station below Riverdale.
We hope this correspondence provides assurance that the City of High Point is making every effort to
meet the basin needs at this station and is committed to properly operating our sewer system. We also
hope that with the submission of this information you will allow us to continue with sewer connections
and with flow allocation approval in the Riverdale drainage basin. It should also be noted that no
overflow has occurred as a result on an issue at Riverdale other than a force main failure that occurred in
September 2, 2010.(See latest Annual Wastewater Report attachment). Overflows that occurred recently
were due too extreme weather events (two hurricanes) and the manholes were under water and so in our
Cityof High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261 USA
9 9
Fax: [phone] Phone:[phone] TDD:336.883.8517

Public Services Department 111111111/pyJ
■ ` � �--
NORTH CAROLINA S INTERNATIONAL CITYr"
opinion had the station not been damaged due to the storms we may have not seen an overflow. We are
confident for the reasons explained that the pump station can comfortable handle any additional flow that
we anticipate until the new system becomes operational. Please notify us upon receipt of this letter and
advise us if any additional information is needed for your review of our request and would request a
meeting to discuss/explain how the city is addressing the issues as soon as possible.
Thank you,
Terry L. Hvtalc
Public Services Director
Cc: Greg Demko—City Manager of High Point
Randy McCaslin—Deputy City Manager of High Point
Randy Hemann—Assistant City Manager of High Point
Derrick Boone—Assistant Director of Public Services
Jenny Graznak- Environmental Specialist-Winston Salem Regional Office
File
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261 USA
Fax: [phone] Phone: [phone] TDD: 336.883.8517

Public Services Department
Terry Houk r ^�:
DIRECTOR
NORTH CAROLINA'S INTERNATIONAL CITYTN
June 27, 2018
NCDENR
Winston-Salem Regional Office
Attn:Justin Henderson, Environmental Specialist
450 W. Hanes Mill road,Suite 300
Winston-Salem, NC 27105
RE: Riverdale Lift Station
Dear Mr. Henderson:
The City of High Point hired The Wooten Company to conduct a flow analysis of the Riverdale Lift Station. The
flow analysis included the installation of a Hydro Vision Multi-path Clamp-on Flow Meter. The Wooten
Company evaluated the flow data with each pump running and each combination of pumps running and
determined that the Riverdale Lift Station (triplex pump set up)with two pumps running can produce at least
22.21 MGD of flow(see attached document).
In a previous correspondence with the NCDENR, a reduced peaking factor of 2.29 was accepted for the Riverdale
Lift Station. The City of High Point is requesting that NCDENR approve the Riverdale Lift Station flow capacity at
22.21 MGD with a peaking factor of 2.29, which would increase the rating of the station to 9.7 MGD average
flow. Please do not hesitate to contact me if you have any questions or if we need to meet to further discuss.
Sincerely,
1 mac..
Terry L. Houk
Public Services Director
Cc: Derrick Boone, Assistant Public Services Director
File
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261 USA
Fax:[phone] Phone:[phone] TDD:336.883.8517

TY
MEMORANDUM
THE
To: Terry Houk
W O OT E N City of High Point
COMPANY From: John C. Grey,P.E.40(
The Wooten Company
Date: April 6,2018
RE: Riverdale Lift Station
Based on the attached pieces of SCADA data with 2 pumps running at the
Riverdale Lift Station,the station was able to produce the following flows:
Pump 1 and Pump 2 running=22.21 MGD
Pump 2 and Pump 3 running=23.09 MGD
Pump 1 and Pump 3 running=23.68 MGD
These were based-on wet well level of about 17' deep,based on the GR(Gorman
Rupp)readings. As the wet well depth reduces the pump flow also reduces,but it
is reasonable to say that the Lift Station with two pumps running can produce at
least 22.21 MGD of flow.
With a 2.5 peaking factor the station should be rated for an average daily flow of
8.88 mgd. In a previous meeting with the State,they accepted a reduced peaking
factor of 2.29,which would increase the rating to 9.7 mgd.
Please let me know if we can be of further assistance.
oH mcAR p/�,��
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300 S. Main Street, — 'a r
Lower Level JCG/dsy - 097 W
Winston-Salem, NC 27101 Enclosures
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336.722.5326 �',,h'N C, e.cik
Fax [phone] //IlilMO�jf,/ _!g

Pump 1 and Pump 2
RDLS EFFLUENT
Date Time FLOW(mgd) RDLS_P1_RPM RDLS_P2_RPM RDLS_WETWELL_LEVEL_GR
3/29/2018 12:20:00 21.36 1200 1200 17.4
3/29/2018 12:21:00 21.36 1200 1200 17.4
3/29/2018 12:22:00 22.1 1200 1200 17.2
3/29/2018 12:23:01 22.1 1200 1200 17.2
3/29/2018 12:24:01 22.17 1200 1200 17.1
3/29/2018 12:25:02 22.17 1200 1200 17.1
3/29/2018 12:26:02 21.48 1200 1200 16.9
3/29/2018 12:27:03 21.48 1200 1200 16.9
3/29/2018 12:28:03 21.85 1199 1200 16.7
3/29/2018 12:29:04 22.21 1199 1200 16.4
3/29/2018 12:30:04 22.21 1199 1200 16.4
3/29/2018 12:31:05 20.92 1199 1200 16
3/29/2018 12:32:05 20.92 1199 1200 16
3/29/2018 12:33:06 22.13 1200 1200 15.5
3/29/2018 12:34:06 22.13 1200 1200 15.5
3/29/2018 12:35:07 20.82 1199 1200 14.6
3/29/2018 12:36:07 20.82 1199 1200 14.6
3/29/2018 12:37:08 21.31 1198 1200 13.7
3/29/2018 12:38:08 21.31 1198 1200 13.7
3/29/2018 12:39:09 21.61 1200 1200 12.6
3/29/2018 12:40:09 21.06 1200 1200 11.5
3/29/2018 12:41:10 21.06 1200 1200 11.5
3/29/2018 12:42:10 20.05 1199 1200 10.3
3/29/2018 12:43:11 20.05 1199 1200 10.3
3/29/2018 12:44:11 21.33 1199 1200 9.4
3/29/2018 12:45:12 21.33 1199 1200 9.4
3/29/2018 12:46:12 10.56 0 0 9.2
3/29/2018 12:47:12 10.56 0 0 9.2
3/29/2018 12:48:13 4.12 0 0 9.9
3/29/2018 12:49:13 4.18 0 0 11.4
3/29/2018 13:06:00 19.88 1200 1200 11.2
3/29/2018 13:07:00 19.88 1200 1200 11.2
3/29/2018 13:08:00 19.88 1199 1200 10
3/29/2018 13:09:01 19.88 1199 1200 10
3/29/2018 13:10:01 19.63 1200 1200 9.3
3/29/2018 13:11:02 19.63 1199 1200 8.6
3/29/2018 13:12:02 19.63 1199 1200 8.6
3/29/2018 13:13:03 12.7 1200 68 8
3/29/2018 13:14:03 12.7 1200 68 8
MAX i ..;

Pump 2 and Pump 3
RDLS EFFLUENT
Date Time FLOW RDLS_P2_RPM RDLS_P3_RPM RDLS_WETWELL_LEVEL_GR
4/6/2018 10:11:34 4.31 0 0 17.7
4/6/2018 10:12:34 4.39 0 0 17.7
4/6/2018 10:13:35 4.38 0 0 17.7
4/6/2018 10:14:35 4.38 0 0 17.7
4/6/2018 10:15:36 4.34 0 0 17.9
4/6/2018 10:16:36 4.34 0 0 17.9
4/6/2018 10:17:36 23.09 1200 1126 17.2
4/6/2018 10:18:37 23.09 1200 1126 17.2
4/6/2018 10:19:37 21.4 1200 1148 17.2
4/6/2018 10:20:38 21.4 1200 1148 17.2
4/6/2018 10:21:38 21.18 1200 1159 17.1
4/6/2018 10:22:39 21.18 1200 1184 16.9
4/6/2018 10:23:39 21.18 1200 1184 16.9
4/6/2018 10:24:40 21.19 1200 1188 16.7
4/6/2018 10:25:40 21.19 1200 1188 16.7
4/6/2018 10:26:41 21.21 1200 1170 16.5
4/6/2018 10:27:41 21.21 1200 1170 16.5
4/6/2018 10:28:42 21.38 1200 1180 16.2
4/6/2018 10:29:42 21.13 1200 1189 15.9
4/6/2018 10:30:43 21.13 1200 1189 15.9
4/6/2018 10:31:43 21.02 1200 1186 15.1
4/6/2018 10:32:44 21.02 1200 1186 15.1
4/6/2018 10:33:44 20.7 1200 1191 14.1
4/6/2018 10:34:45 20.7 1200 1191 14.1
4/6/2018 10:35:45 20.52 1200 1195 12.8
4/6/2018 10:36:46 20.52 1200 1195 12.8
4/6/2018 10:37:46 17.27 1200 1081 11.7
4/6/2018 10:38:47 20.13 1200 1190 10.4
4/6/2018 10:39:47 20.13 1200 1190 10.4
4/6/2018 10:40:48 19.83 1200 1195 9.3
4/6/2018 10:41:48 19.83 1200 1195 9.3
4/6/2018 10:42:48 19.86 1200 1198 8.4
4/6/2018 10:43:49 19.86 1200 1198 8.4
4/6/2018 10:44:49 10.46 0 1200 7.9
4/6/2018 10:45:50 10.25 0 1200 7.7
MAX I 23U9

Pump 1 and Pump 3
RDLS EFFLUENT
Date Time FLOW(mgd) RDLS_P1_RPM RDLS_P3_RPM RDLS_WETWELL_LEVEL_GR
3/29/2018 10:35:00 22.54 1200 1161 17.6
3/29/2018 10:36:00 23.19 1200 1176 17.5
3/29/2018 10:37:00 23.19 1200 1176 17.5
3/29/2018 10:38:01 23.68 1200 1179 17.5
3/29/2018 10:39:01 19.19 1200 1177 17.5
3/29/2018 10:40:02 19.19 1200 1177 17.5
3/29/2018 10:41:02 0 1200 1180 17.3
3/29/2018 10:42:03 0 1200 1180 17.3
3/29/2018 10:43:03 22.08 1200 1188 17.1
3/29/2018 10:44:04 22.08 1200 1188 17.1
3/29/2018 10:45:04 22.48 1200 1182 16.9
3/29/2018 10:46:05 22.48 1200 1182 16.9
3/29/2018 10:47:05 22.37 1200 1177 16.6
3/29/2018 10:48:06 22.46 1199 1174 16.3
3/29/2018 10:49:06 22.46 1199 1174 16.3
3/29/2018 10:50:07 21.84 1200 1173 15.9
3/29/2018 10:51:07 21.84 1200 1173 15.9
3/29/2018 10:52:08 21.96 1200 1179 15.2
3/29/2018 10:53:08 21.96 1200 1179 15.2
3/29/2018 10:54:09 22.15 1200 1177 14.1
3/29/2018 10:55:09 22.15 1200 1177 14.1
3/29/2018 10:56:10 21.8 1200 1182 12.8
3/29/2018 10:57:10 21.8 1200 1182 12.8
3/29/2018 10:58:11 17.39 1200 955 11.7
3/29/2018 10:59:11 22.63 1200 1173 10.6
3/29/2018 11:00:12 22.63 1200 1173 10.6
3/29/2018 11:01:12 22.8 1200 1184 9.6
3/29/2018 11:02:12 22.8 1200 1184 9.6
3/29/2018 11:03:13 21.17 1200 1166 9
3/29/2018 11:04:13 21.17 1200 1166 9
3/29/2018 11:05:14 0 1200 1180 8.1
3/29/2018 11:06:14 0 1200 1180 8.1
3/29/2018 11:07:15 0 0 13 8.1
3/29/2018 11:08:15 0 0 56 8.8
3/29/2018 11:09:16 0 0 56 8.8
3/29/2018 11:10:16 0 0 47 9.6
3/29/2018 11:11:17 0 0 47 9_6
3/29/2018 11:12:17 0 0 39 11
3/29/2018 11:13:18 0 0 34 12.5
3/29/2018 11:14:18 0 0 34 12.5
3/29/2018 11:15:19 0 0 32 14.1
3/29/2018 11:16:19 0 0 32 14.1
3/29/2018 11:17:20 0 0 31 15.7
3/29/2018 11:18:20 0 0 31 15.7
3/29/2018 11:19:21 0 0 28 16.4
3/29/2018 11:20:21 , 0 0 28 16.4
3/29/2018 11:21:22 0 0 28 16.7
3/29/2018 11:22:22 0 0 27 17
3/29/2018 11:23:23 0 0 27 17

3/29/2018 11:24:23 0 0 1178 17
3/29/2018 11:25:24 0 0 1178 17
3/29/2018 11:26:24 23.45 1200 1156 16.4
3/29/2018 11:27:24 23.45 1200 1156 16.4
3/29/2018 11:28:25 22.8 1200 1162 16
3/29/2018 11:29:25 22.8 1200 1162 16
3/29/2018 11:30:26 21.73 1200 1172 15.4
3/29/2018 11:31:26 21.73 1200 1172 15.4
3/29/2018 11:32:27 21.85 1200 1172 14.4
3/29/2018 11:33:27 21.77 1200 1172 13.1
3/29/2018 11:34:28 21.77 1200 1172 13.1
3/29/2018 11:35:28 21.45 1200 1188 11.9
3/29/2018 11:36:29 21.45 1200 1188 11.9
3/29/2018 11:37:29 16.87 1200 946 10.8
3/29/2018 11:38:30 16.87 1200 946 10.8
3/29/2018 11:39:30 22.86 1200 1185 9.8
3/29/2018 11:40:31 20.81 1200 1179 9.1
3/29/2018 11:41:31 20.81 1200 1179 9.1
3/29/2018 11:42:32 19.36 1200 1183 8.4
3/29/2018 11:43:32 19.36 1200 1183 8.4
3/29/2018 11:44:33 21.75 1200 1184 7.5
3/29/2018 11:45:33 21.75 1200 1184 7.5
3/29/2018 11:46:34 3.97 0 25 7.7
3/29/2018 11:47:34 3.97 0 25 7.7
IMAX Imo. 2,...8)

CDM
smith
5400 Glenwood Ave,St 400
Raleigh,NC 27612
tel:[phone]
January 4,2019
Derrick Boone
City of High Point Assistant Public Services Director
211 South Hamilton
High Point,NC 27260
Subject: Initial Modeling Results Related to Riverdale Pump Station
Dear Mr. Boone:
The City of High Point hired CDM Smith Inc to perform a Sewer Master Plan that included temporary
flow monitoring to determine existing system flows and a hydraulic model of major outfalls and pump
stations including the Riverdale Pump Station(PS). The Master Plan will not be completed for a couple
months,however in our December progress meeting we were surprised to hear of the immediate
concerns over Riverdale PS capacity. Our flow monitoring and our hydraulic modeling indicate no
SSOs occurred nor are predicted to occur during the peak wet weather flow of the 5-year storm event
in the outfall immediately upstream of Riverdale PS,at Riverdale PS,or downstream of Riverdale PS.
Our flow monitoring at Riverdale PS indicated an average dry weather flow of 8.0 mgd. Using a
peaking factor of 2.5 gives a peak design flow of 20.0 mgd. Our modeling and analysis of the pump
station shows Riverdale can pump at a firm capacity of 22.2 to 25.8(depending on optional pump
settings) and a total capacity of 30.3 to 32.7 mgd(depending on pump settings).Therefore,flows
appear to currently not exceed the State's criteria. Our hydrologic and hydraulic models predict a peak
wet weather flow during a 5-yr design storm of 31.1 mgd which Riverdale PS can convey.In addition,
the sewer is quite deep at Riverdale PS so even if the sewer surcharged upstream of the pump station,
there is less risk of SSOs due to this depth. System improvements to reduce the flow at Riverdale
(through either rehabilitation to reduce I/I,storage,and/or pump arounds) are being analyzed and
will be recommended,however,it is our opinion the City has a few years to safely implement these
improvements without the risk of sanitary sewer overflows (for capacity reasons) at Riverdale PS.
Sincerely,
Christine M.Nesbit
CDM Smith Inc.
cc: Terry Houk,Barbara Moranta,Ben Sherman
A•
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WATER+ENVIRONMENT+TRANSPORTATION+ENERGY+FACILITIES

PUBLIC SERVICES DEPARTMENT ' T T• '
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261
Fax:[phone] Phone:[phone] TDD:336.883.8517
NORTH CAROLINA'S INTERNATIONAL Crn'''
ANNUAL WASTEWATER REPORT
SEWER COLLECTION AND WASTEWATER TREATMENT FACILITIES
Report for FY 2017-2018
(July 1, 2017 through June 30, 2018)
On July 21, 1999, North Carolina Governor James Hunt signed a law, House Bill 1160, that placed reporting
requirements on the owners or operators of wastewater treatment and wastewater collection facilities in North
Carolina. Part of the legislation was a requirement to provide the user or customers of the system with an
annual report of the past year's performance including a summary of violations.
The purpose of these reports is to provide an understandable and informative description of the wastewater
treatment facilities and sewage collection system, describe the regulations with which these facilities must
comply, and promote a general awareness of these facilities and their role in protecting the environment.
The City of High Point operates two wastewater treatment facilities and a wastewater collection system that
collects and transports the wastewater to each of the two facilities. The names and permit information for
these facilities are listed below as well as those professionals designated by the State of North Carolina as
Operators in Responsible Charge (ORC):
Eastside Wastewater Westside Wastewater
Treatment Plant Treatment Plant Sewage Collection System
5898 Riverdale Road 1044 West Burton Road 816 East Green Street
Jamestown, NC 27282 Thomasville, NC 27360 High Point, NC 27260
Ph: 336-822-4732 Ph: 336-822-4767 Ph: 336-883-3691
NPDES Permit#: NC0024210 r NPDES Permit#: NC0024228 r Collection Permit#:WQCS00010
Duane Hamby, ORC Kevin Wood, ORC r Bart Hepler, ORC
This report is available for viewing at City Hall (Public Services) or by logging onto our web site at
www.highpointnc.gov. Customers will be notified of its availability by printed notice on water and sewer bills.
Questions, comments, or requests for additional copies of this report should be directed to the Public Services
Department at 336-883-3215. This report has been completed by staff of the City's Public Services Department
and is accurate to the best of our knowledge and belief.
Terry L. H uk, Director of Public Services
City of High Point 1 Annual Wastewater Report FY 2017-2018 1

•PUBLIC SERVICES DEPARTMENT `
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261
Fax:[phone] Phone:[phone] TDD:336.883.8517 _ •
NORTH C4ROLINA'S INTERNATIONAL CITY'
SYSTEM OVERVIEW
The Public Services Department bears the responsibility for wastewater collection and treatment. The Divisions
in the Department that are involved in wastewater collection and treatment are: Water&Sewer Mains, Central
Laboratory Services, Maintenance Services, Westside Wastewater Treatment Plant, Eastside Wastewater
Treatment Plant and Residuals Management.
The City's wastewater collection and wastewater treatment facilities provide service to homes, commercial
establishments and industries. During this reporting period, there were approximately 38,000 connections
through which an average of 15.2 million gallons of wastewater traveled each day. This wastewater was
collected, treated, and then discharged back into the receiving stream. The City also treats wastewater from
the Jamestown, Archdale and Sedgefield communities.
Multiple state agencies assure that stringent standards are met before the treated wastewater can be released
into a receiving stream. These standards are listed in a National Pollutant Discharge Elimination System (NPDES)
permit. Each facility that releases treated wastewater into surface waters, a stream for example, must possess
one of these permits. These permits regulate the type and amounts of pollutants that a facility can discharge.
The discharge limits specified in these permits are based on the ability of the stream to withstand the addition
of pollutants without having any noticeable impact on the water quality of the stream. These NPDES permits
include monitoring requirements and discharge limits. Some vary with seasons and have different maximums
for daily values, weekly averages, monthly averages and quarterly averages.
Wastewater treatment is a complex process that is often taken for granted. However, it requires expensive
equipment and skilled operations, maintenance, laboratory, solids handling and engineering personnel working
constantly to assure adequate treatment twenty-four hours per day, seven days per week, and 365 days
throughout the year.
COLLECTION SYSTEM OVERVIEW
The City of High Point wastewater collection system consists of approximately 657.2 miles of gravity wastewater
lines; 15.9 miles of pressurized force mains; 23 wastewater lift stations, and 16,850 manholes. On average,
more than 15.2 million gallons per day (MGD), of wastewater flows through this system from homes and
businesses, to either the Eastside or Westside Wastewater Treatment Plant. The collection system consists of
both gravity lines and force mains. Wastewater discharged in neighborhoods flows by gravity into the collection
system.The size of the collection system lines increase to handle the higher flow as more and more wastewater
is collected from outlying areas. Once the gravity lines get too deep,the flow must be pumped or lifted up, by
the City's lift stations,to a higher elevation where use of the gravity lines will be resumed. The largest of these
collection lines route the wastewater to the two wastewater treatment plants. The lift stations are monitored
24 hours a day for proper operation. The Water/Sewer Mains Division has four crews that are responsible for
line cleaning and emergency response to calls frpm the public dealing with collection system problems.
A State mandated fats, oils, and grease (FOG) program is also in effect. The Collection System maintenance
crews work diligently to keep the lines clean and well-maintained. A concerted effort is necessary between the
City and its citizens in order to reduce the grease related problems in the collection system. Despite the City's
City of High Point I Annual Wastewater Report FY 2017-2018 2

r
PUBLIC SERVICES DEPARTMENT r-f
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261
H01=-I
Fax:[phone] Phone:[phone] TDD:336.883.8517 ,
NORTH CAROLINA'S INTERNATIONAL CITYY'
best efforts,sanitary sewer overflows(SSO's) happen in High Point,just as they do in every municipality in North
Carolina. A SSO is when wastewater escapes from the wastewater collection system to the surrounding ground
or nearby surface waters. The North Carolina Division of Water Resources defines a reportable SSO as any spill
to the ground in excess of 1000 gallons or any spill, regardless of the amount,which reaches any surface waters.
During this reporting period,the City of High Point had 15 reportable SSO's. Approximately 54%of SSO's in the
City were attributed to grease, 20%to debris/other blockages, 13%to roots, and 13%to sewer main breaks or
pump station failures. The SSO's are summarized in the Appendix.
What the Mains Division is doing to Prevent/Reduce Spills
• Inspect,repair, renovate or replace sewers and pump stations as needed to eliminate leaks or to increase
system capacity.
• Inspect and clear collection lines with cutting and flushing equipment.
• Educate customers about proper grease disposal.
■ Clear collection system easements to keep roots from growing into collection lines; limit plantings
allowed along easements.
• Operate a continuous monitoring and alarm system at pump stations; maintain and repair pumps; use
generators for backup power; replace pump stations with gravity sewers when practical; monitor and
inspect pump stations to identify improvement needs.
• Ask customers to contact the City if they see debris or trash being deposited into the collection system.
Corrective Actions
Follow-up actions depend on the cause and severity of the spill and may include:
■ Cleanup
■ Disinfection
• Inspection
• Clearing of mains.
• Increased inspections or other maintenance.
■ Repair, renovation or replacement of pipes.
• Replacement of sewers or pump equipment with larger capacity facilities, in some cases.
EASTSIDE WASTEWATER TREATMENT PLANT
The Eastside Wastewater Treatment Plant is a biological nutrient removal, 5-stage (BNR) facility. Essentially,
this means that an environment has been created that encourages the growth of phosphorus removing bacteria
that will consume phosphorous at higher than normal levels, thus
removing it before the water is discharged. Also, another
• environment will be created that forces the bacteria to use oxygen
from nitrogen compounds, thereby reducing the amount of total
• %%� nitrogen in the treated effluent.The reduction of phosphorous and
nitrogen in the plant's effluent will help reduce the potential for
- algae growth in Randleman Lake, to which the treated effluent is
discharged.
Other treatment processes include screening, grit removal, primary clarification, 5-stage activated sludge,
secondary clarification, effluent filtration, ultraviolet disinfection, post aeration and solids handling(dewatering
City of High Point I Annual Wastewater Report FY 2017-2018 3

PUBLIC SERVICES DEPARTMENT
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261
HI � icd.
Fax:[phone] Phone:[phone] TDD:336.883.8517 •
NORTH CAROUNAS INTERNATIONAL Crry'
and incineration), and odor control.All of these major processes, and numerous other minor processes, support
the biological treatment process necessary to remove pollutants from the wastewater.
The Eastside WWTP treated and discharged an average of 12.33 million gallons per day (MGD) or a total of
4,500.4 million gallons (MG) during the reporting year 2017-2018. =I
The Eastside WWTP was compliant with its NPDES permit for ten (10) months of the 2017-2018 reporting year.
Eastside was non-compliant for the month of August 2017 with the NPDES permit limit for Fecal coliforms during
the week of August 14th, monthly ammonia and weekly ammonia for the week of August 215t. Eastside was also
non-compliant with the NPDES limit for total phosphorus for the month of June 2018.
WESTSIDE WASTEWATER TREATMENT PLANT
The Westside WWTP is now also a biological nutrient removal (BNR) 5-stage facility with processes nearly
identical to the Eastside WWTP. Treatment processes include a coarse bar screen, influent lift pumps, fine
screening, grit removal, primary clarification, 5-stage activated sludge, final clarification, alum for additional
phosphorus precipitation, tertiary filtration, Rotary Drum Thickening (RDT - to thicken sludge prior to
dewatering), Ultraviolet light (UV) disinfection, post-aeration, solids handling(via centrifuge) and odor control.
The Westside WWTP was compliant with its NPDES permit for ten (10) months of the 2017-2018 reporting year.
Westside was non-compliant with the NPDES permit for whole
effluent toxicity for the months of July 2017 and January 2018.
On November 1,2005,seasonal phosphorus limits became effective.
These limits defined in the NPDES permit for the Westside WWTP
are based on total poundage discharged during each seasonal '-
period.The winter season is November 1-March 31 (7808 lbs.).The 4 . `
summer season is April 1- October 31 (5533 lbs.).
An average of 2.84 million gallons per day (MGD) or a total of 1,036.6 million gallons (MG) were treated and
discharged during the reporting year 2017-2018.
Phase 3 of the Westside Biological Nutrient Removal (BNR)
1"-i"" - upgrade, began in early 2014 and is now completed.The design
.,; of this upgrade has increased the permitted treatment capacity
p , of the Westside WWTP from 6.2 MGD to 8.2 MGD and a total
capacity of 10.0 MGD. Future receiving stream improvements
__.Apo rs ;— will possibly allow a maximum increase in permitted treatment
capacity to 10.0 MGD. Operations for this plant will be nearly
identical to the operations at the Eastside WWTP for
��_ phosphorous and nitrogen removal with the 5-stage BNR
:= f j process design.
MAINTENANCE SERVICES
City of High Point I Annual Wastewater Report FY 2017-2018 4

PUBLIC SERVICES DEPARTMENT f
HIGH s -1-
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261 <"
Fax:[phone] Phone:[phone] TDD:336.883.8517 e
NORTH CAROI.lNA'S INTERNATIONAL CrrYA'
The Central Maintenance Division maintains the City of High Point Eastside Wastewater Treatment Plant,
Westside Wastewater Treatment Plant, all lift stations and the Residuals Management equipment. The
centralized maintenance department consists of a maintenance superintendent, an assistant maintenance
superintendent, mechanics, electricians, and electronics technicians. The main maintenance shopis centrally
located at the Ward Water Filtration Plant, with satellite shops at the Westside and Eastside Wastewater
Treatment Plants. All the technicians are highly trained with many years of maintenance experience.
The electronics section technicians are qualified to perform technical and skilled work in the maintenance,repair
and replacement of electrical, electronic and pneumatic equipment at the treatment and collection facilities.
This section consists of individuals who possess a thorough knowledge and background in troubleshooting and
programming PLC based systems, performing computer based technical assistance for the wastewater
treatment plants, lift stations and residuals management. They are capable of creating graphic screens and
programming the Supervisory Control and Data Acquisition (SCADA) systems allowing the lift stations, and
Wastewater Treatment Plant equipment, to be monitored and controlled remotely and in some cases,
controlled from a centralized location. They also are responsible for installing and repairing all hardware and
software for the computers and peripheral devices and creating databases and spreadsheets so that historical
data can be maintained and accessed easily.
The electrical section personnel work hand-in-hand with the electronics staff and are qualified to perform
general skilled maintenance and repair of electric motors, high and low voltage switching equipment, electrical
control systems (i.e. centrifuge/incinerator controls; circuits, lighting, heating and air conditioning electrical
components, UV disinfection systems and troubleshoot the diesel generator electrical systems, etc.).
The mechanical technicians troubleshoot and repair complex pumping and wastewater treatment equipment.
They are capable of dismantling and overhauling gearboxes, grit collection equipment, conveyors, mechanical
grinders, pumps of all types, blowers and compressors, mixers, centrifuges, fluidized bed incinerator, control
valves and various other process equipment. They possess technical skills such as proper alignment techniques,
welding, use of cutting torch and some limited machine shop skills.
An on-call Maintenance team is available after hours, weekends and holidays to respond to emergency and
equipment breakdowns at the water filtration plant, both wastewater plants, lift stations and residuals
management.
The mission of the Water and Sewer Maintenance Department is to maintain the equipment at the Eastside
Wastewater Treatment Plant, the Westside Wastewater Treatment Plant, the Frank L. Ward Water Filtration
Plant and all Lift Stations, and the Residuals Management Division in order that they remain in compliance with
all federal, state and local regulations. Maintenance staff accomplished these goals through their timely
response to corrective maintenance work orders and by performing preventative maintenance as scheduled.
City of High Point I Annual Wastewater Report FY 2017-2018 5

PUBLIC SERVICES DEPARTMENT �T T\r("T T f
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261 ��j l�J 1
Fax:[phone] Phone:[phone] TDD:336.883.8517 • ,
NORTH CAROLINA'S INTERNATIONAL CM"
LABORATORY SERVICES
The state certified, Central Water Quality Lab, located at the Frank L. Ward Water Filtration Plant, provides
comprehensive analytical monitoring and compliance support for the Public Services Department/Plants
Division. This ensures monitoring and reporting compliance with all permitted State, Federal and local laws and
ordinances. The central Water Quality Lab provides necessary and required testing to ensure safe, clean
drinking water, as well as performing analysis on the incoming and outgoing flows from both Wastewater
Treatment facilities, as stipulated by the NPDES permits. On average, the lab reports over 15,000 permit
required tests to the state that aid in the safe and efficient operation of the I JI I w
plants. Over 3500 quality control tests are performed during every reporting
period.
The Industrial Pretreatment Program manages industrial and non-residential 1111101
discharges into the City's sanitary sewer system. Staff of the Industrial -
Pretreatment Program survey facilities discharging into the sewer system and
issue permits to those falling into certain categories. The type of business
_ _
activity conducted determines all discharge permits, or the type(s) of waste
discharged from their facility. The issuance of NPDES permit limits is based on the ability of the treatment plant
— either the Eastside WWTP or the Westside WWTP — to assimilate, treat and remove substances from the
incoming waste stream.
There were no discrepancies noted during the State inspection of IPP in 2017-2018.
RESIDUALS MANAGEMENT
The City's Residuals Management Division has the
task of disposing of the wastewater sludge solids
from Westside WWTP and Eastside WWTP, and the
disposal of alum sludge solids generated by the l j
Ward Water Plant.
The Residuals Division is currently undergoing an
upgrade to replace aging equipment and to meet the . ,
US EPA newly released Maximum Allowable Control
Technology (MACT) Standards for sewage sludge "'� 1 _
incinerators with compliance required in 2016. The '�
centrifuges and the incinerator were taken out of
to allow the contractor to be \
service In April 2015 in g
work on the upgrade project. Completed upgrades
to the solids handling facility include two new high
solids centrifuges,the addition of a sludge "cake" (Above)—Residuals Eastside Dewatering Building.
holding bin and two new "cake" pumps, all of
which became operational in late June of 2016. The new centrifuges are used to dewater residual solids,
producing a "cake" sludge (about 25% dry by weight).
City of High Point I Annual Wastewater Report FY 2017-2018 6

PUBLIC SERVICES DEPARTMENT \ ' m� �,-
NU, ', 0 r
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261 -Fax:[phone] Phone:[phone] TDD:336.883.8517
NORTH CAROUNAS RQTERNAT1O AL CITY"
While construction on the incinerator is being completed,
-. the dewatered sludge is currently transported to compost
r ) v._ facilities for beneficial reuse. The incinerator upgrade will
i include the repair of existing reactor refractory and
1‘ I '� ? r .�� 4.1 �I insulation, repair of the exterior steel shell and upgrade
.. i ,,.,.> IY ;/ I to the fluidized air blower. To meet the MACT standards
♦ , _ -> �` — . the project includes the addition of control devices to
I'1'� I _ ; i d improve the emissions from the incinerator.
{I -' I , Westside WWTP solids continue to be dewatered at the
Westside plant and transported to a receiving station at
fI
l the Eastside WWTP, where the solids are combined and
1 il i i
sent to the compost facilities.
(Left)—High Speed Centrifuges
i
The Residuals Management Division is responsible for maintaining
compliance with EPA and State air quality standards. Operating ``Y.. \'
under a State Air Quality Permit,this Division is also responsible for
overseeing additional state air quality permits issued to the City.
There were no compliance issues with the air quality standards for . - ' ? *kw
emissions during this reporting year. _
r 411r . ,ak„,..,... :, ., i
Residuals Management Division has carried out its mission of . ' , , �.. '
providingefficient and prompt service with its staff of dedicated i T - ,141 `,
employees. - r :
(Above)—Primary heat exchanger
for the new incinerator.
What is the City Response?
The City of High Point is committed to improving and maintaining compliance with all regulations regarding the
wastewater system. Major capital improvement projects include:
• $2,070,450 to upgrade/replace three sewer pump stations.
• Estimate $2,200,000 for other sewer system improvements.
■ $21,300,000 for Bio-Solids Disposal Improvements.
• $31,500,000 for improvements to the Westside WWTP- Phase 3.
City of High Point I Annual Wastewater Report FY 2017-2018 7

PUBLIC SERVICES DEPARTMENT HIGH f
F
City of High Point, P.O. Box 230, 211 South Hamilton Street, High Point, NC 27261
Fax:[phone] Phone:[phone] TDD:336.883.8517
NORTH CARO[INA'S INTERNATIONAL Cm'
Customer Responsibilities
The leading cause of overflows is debris and grease blockages in the lines. While the collection system is
designed to handle and safely transport sanitary waste to our treatment plants, too much grease or non-
biodegradable material placed into the system can cause clogs and result in sanitary sewer overflows (SSOs).
Dumping any fats, oils or grease derived from animal and vegetable sources, including meats, nuts, cereals and
beans, down any drain—home or business—can cause a stoppage that forces raw, untreated waste to spill into
our yards, streets, and streams. It is very important to help prevent all foreign materials, such as grease and
other household debris from entering the collection system, as these can cause blockages.
You can help the City of High Point reduce the number of overflows by following these simple steps:
■ Collect grease,fats and oils from cooking in a container and dispose of it in the garbage instead of pouring
it down the drain.
■ Always scrape silverware, cookware, and dishes prior to washing.
■ Place food scraps in the garbage for disposal with you household solid waste.
Please call the City of High Point to report any water main break or sanitary sewer overflow.
To report a problem, please call 883-3111.
Assistance from the Public is appreciated.
City of High Point I Annual Wastewater Report FY 2017-2018 : 8

PUBLIC SERVICES DEPARTMENT HI p T .7
Cit of High Point P.O. Box 230, 21 1 South Hamilton Street, High Point, NC 27261 `'I
Y g - g
Fax:[phone] Phone:[phone] TDD:336.883.8517 0
_ .
NORTH CAROLNA'S INTERNATIONAL CITY'
APPENDIX
FY 2017-2018
DATE LOCATION OF SSO TOTAL SPILL CAUSE
(Gals.)
9-Aug-17 408 Cory Rd 100 Roots
6-Oct-17 1305 Brookfield Rd 400 Grease
17-Nov-17 Old Riverdale Landfill 12,000 Other
8-Dec-17 Riverdale landfill 500 Other
14-Dec-17 233 Northpoint St 375 Other
19-Dec-17 Lowe Ave at dead end 2400 Grease
30-Dec-17 233 Northpoint St 400 Roots
13-Jan-18 4015 Sherry St 175 Grease
23-Jan-18 1510 Bethel Dr 700 Pump Station
9-Feb-18 2001 Whites Mill Rd 180 Grease
15-Feb-18 727 Belmont Dr 720 Grease
18-Feb-18 4233 Brentonshire Ln 200 Grease
10-Apr-18 3301 Triangle Lake Rd 900 Grease
11-Apr-18 5884 Riverdale Rd 660 Grease
19-Jun-18 306 Model Farm Rd 700 Pipe Failure
City of High Point I Annual Wastewater Report FY 2017-2018 9