WQCS00025_NOI_NOV2020DV0216_Response_20200520

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Water Resources Division
146 N Church Street
PO Box iio6
Asheboro, NC 27204-iio6
May 20, 2020
CITY OF *#
AsKERofu
NORTH CARO LINA
Tel: [phone] Ext. 258
Mr. Lon T. Snider DjI�Q 0n V e
NC Department of Environmental Quality
Division of Water Resources
450 Hanes Mill Rd
Suite 300
Winston-Salem, North Carolina 27105
Re: Response to Notice of Violation & Intent to Issue Civil Penalty
Tracking No.: NOV 2020-DV-0216
Dear Mr. Snider:
Fax: [phone]
NC Department of
Environmental Quality
Received
KAY 2 6 2020
Winston-Salem
Regional Office
Zo21G1U7
This letter is written in response to the above referenced letter of correspondence from your office
for the sanitary sewer overflows (SSO's), Incident Numbers 20200162, 2020163, and 20200164
experienced on January 24, 2020 at lift station numbers 3, 4 and 6 as a result of inflow and
infiltration. Asheboro experienced extremely heavy rainfall resulting in a total amount of rainfall
of 1.8 inches.
Maintenance staff responded to the alarms and evaluated the sites to monitor the flows. Laboratory
sampling was conducted upstream and downstream of the sites and no environmental impacts were
measured. Temperature, pH, DO, Conductivity, and Ammonia sampling of the stream reveal no
real environmental impact on Dissolved Oxygen (DO), pH, Ammonia (NH3), and Conductivity
(Con) as illustrated in the following table for upstream (US), at the site (S) and downstream (DS)
monitoring.
Station
DO
US
DO
S
DO
DS
pH
US
pH
S
pH
DS
NH3
US
NH3
S
NH3
DS
Con
US
Con
S
Con
DS
LS # 3
10
9.9
9.8
5.6
5.7
5.7
<.15
<.15
<.15
70
69.4
61.8
LS # 4
10.1
9.9
10.2
5.8
5.8
5.8
<.15
<.15
<.15
107
93.3
94.4
LS # 6
10.4
10.4
10.4
5.6
5.6
5.7
<.15
<.15
<.15
77.2
75.3
74.8
The City has applied multiple times for CWSRF funding for an upgrade project for Lift Station #
3 and been denied An application has been submitted for the spring 2020 cycle. An engineering
firm has been selected and contracted to design an upgrade for this station and preliminary
surveying and planning is under way. Other funding sources will be sought if state funding isn't
available. This lift station has eight sub basins that all eventually pump to this site. Each sub basin
has been investigated to identify inflow/infiltration but no major sources have been identified.
Home of the NC Zoological Park

Response to Notice of Violation & Intent to Issue CivilPenalty
10/10/2019
Page 2 of 2
The City of Asheboro is committed to protecting the environment and improving wastewater
collection service to customers. We are working from many angles to address issues that will
improve the operation of our collection system. Staff is continuing flow monitoring and will be
aggressive in locating potential I & I sources and making repairs. Flow monitoring in the LS # 4
basin revealed a few non -major sources of I & I that have been repaired. Flow monitoring in the
LS # 6 basin has not revealed any major sources of I & I yet but the study is ongoing. The Capital
Improvement Plan provides future resources for studies, repairs and replacements to the
wastewater collection and treatment systems.
Including these SSO's, the overall performance of our system is exemplary. The 2019 System
Performance reveals .that of the more than 1.4 billion gallons of wastewater treated at the City of
Asheboro W WTP; less than 0.01% was spilled at the plant or in the collection system. Laboratory
personnel sample after every SSO as soon as it is safe to do so. None of the laboratory results
from this SSO.event revealed significant_ environmental impact.
Please take these efforts into consideration as you deliberate these matters. The City requests
NCDEQ refrain from taking enforcement action as a result of these incidents. The City of
Asheboro takes pride in being good stewards of the environment and is taking measures to ensure
water quality in our community. Thank you for your consideration in this matter. If you have any
questions, please contact me at [phone] ext. 258.
Sincerely,
�
Michael D..Rhoney; P.E.
Water Resources Director
QTY OF
ASHEBOF\O
WATER RESOURCES