WQCS00057_NOI_NOV2020DV0442_Response_20201008 (2)

o� THO
City of Thomasville
Thomasville, North Carolina 27360
20 lam
`N CARp1
Lon T. Snider
Regional Supervisor
WQROS, WSRO, DWQ, NCDEQ
450 W. Hanes Mill Road, Suite 300
Winston-Salem, NC 27105
RE: Intent to Enforce Letter Response
Incident Number 202002221
Nat-aoao _ Q�-Oy�'�
NC Department of
Environmental Quality
Received
OCT 13 2020 I
Winston-Salem
Regional Office
Utilities Department
08 October 2020
Dear Mr. Snider,
In response to the letter of Intent to Enforce of 29 September 2026 the City, of Thomasville asks
that the following be taken into consideration:
Regarding incident # 202002221: Please find enclosed a chart of the rainfall recorded in 15-minute
increments at the station nearest to and in the same sewershed as the East Davidson Pump Station. The
intensity of the rainfall was overwhelming with 1.9 inches in just the first 30 minutes, followed by 0.77
inches over the next 45 minutes. This sudden volume of precipitation overwhelmed not only the
sanitary sewer system, but the storm drain systems of Thomasville as well and resulted in flash flooding
across the city. The fact that this in only lasted for one hour and forty-five minutes indicates that
inflow from the storm deluge entered into sanitary sewer collection system overwhelmed the East
Davidson pump station. There were no known impacts to public health, fish kills, or recreational area
closures as a result of this spill.
Rehabilitation of.the SouthHamby Creek Outfall that leads into this station is listed in the city's
Capital Improvement Plan as adopted by Council. This project should help to reduce I&I and the
resultant spills at this pump station: The City of Thomasville has spent and will continue to spend
millions of dollars to protect the environment by identifying and correcting deficiencies in the collection
system.
The City of Thomasville asks that the extremely precipitation that both preceded and occurred
during this event as well as the ongoing efforts to upgrade all aspects of the sanitary sewer collection
system be taken into account with any enforcement action.considered.
Sincerely, ,>
C
CC:Ke Craver
Morgan Huffman
Public Services Director
City of Thomasville
336-475-4220

t
TimberCreek
Rainfall from 7/1/2020to 7/25/2020
Device Time Rainfall Amount (inches)
7/23/2020 16:00 0
7/23/2020 16:15 0
7/23/2020 16:30 0.
7/23/2020.16:45 OT67
7/23/2020 17:00 1.23
7/23/2020 17:15 0.412.76 inches
7/23/202017:30 0.19 "
7/23/202017:45 0.1,7
7/23/2020 18:00 0.09
7/23/2020 18:15 0.01
7/23/2020 18:30 0.01
7/23/2020 18:45 0.02
7/23/2020 19:00 0
7/23/2020 19:15 0
7/23/2020 19:30 0.04 '
7/23/2020 19:45 0.04
7/23/2020 20:00' 0
7/23/2020 20:15 0
7/23/2020 20:30 0
7/23/2020 20:45 0
7/23/2020 21:00 0.01
7/23/20202.1:15 0
7/23/2020 21:30. 0 j
7/23/2020 21:45 0 �.
7/23/2020 22:00 0
7/23/2620 22:15 0
7/23/2020 22:30 0
7/23/2020 22:45 0
7/23/202.0 23:00 0
7/23/2020 23:15 0
'7/23/2020 23:30 0
7/23/2020 23:45 0
7/24/2020 6:00 0.
l[otal:..-_. - -

1ON12020
AHPS Precipitation Analysis
'City, sr,
city, at
Go
® RSS Feeds
Warnings
Current
By State/County...
UV Alerts
Observations
Radar
Satellite
Snow Cover
Surface Weather...
Observed Precip
Forecasts
Local
Graphical
Aviation
Marine
Hurricanes
Severe Weather
Fire Weather
Text Messages
By State
By Message Type
National
Forecast Models
Numerical Models
Statistical
Models...
MOS Prod
GFS-LAMP Prod
Climate
Past Weather
Predictions
Weather Safety
Weather Radio
Hazard Assort...
StormReadyI
TsunamiReady
Skywames
Education/Outreach
Information Center
Tsunamis
Publications...
Contact Us
FAQ
Comments...
-0SA.gP_
�nnduson
Im Facebook I
NWS an Facebook
vvamings a rorecasis urapnical rorecasss Naudnai Maps
River Observations River Forecasts Long -Range River Flood Risk
OPE Quantitative Download About NWS
Precipitation Estimates Precip Analysis
Displaying July 24, 2020 1-Day Observed precipitation
Valid on: July 24 2020 12:00 UTC
What is UTC eme7 Map Help
weathergov
-tarsi
•.
Search for. tie NWS 0All NOAA ® r
Radar Water Air Quality Satellite Climate
Precipitation River Download Other Information
Other Useful Survey& Regional/RFC
Information Feedback Precip Data
Print this map Pemlalink O BOOIdiaRIC p b ®_ I
Find address or Ideation
c [' r f
—�
�..... ••••._
Ana .,'
�r
c
� �r''•4Yyr'�1��
�7• �
r�y•
' rr
'
.ri`, y
1
�.
�:•
'�`
"`�`;,
} r
J yy�
i
y" .yf .'�r
nOOfl
2i
;]mom•
h f h
r' r
H r
+f
�rf �
e�
r.
srr r
Tlmefrarne
Product
Units
View Today's Analysis
View Yesterdays Analysis
Observed
O imperial
Archive Data:
Range:
OMetric
0Yeaily
YeYea2020 v
Year
0 Monthly
Daily
Month July v
Day 24 v
I
Mouse Location
Map Overlays
Location
Let: 35.257
Precipitation County
❑
Full Cones v
Lon:-79.738
O
State ❑ River Forecast Center
❑
I i i
Weather Forecast Office ❑
_t
https9/waterweather.gov/precip/ 1/2

10l1/2020 AHPS'Precipita6on Ahaly3ls
Bookmark this page Data Availability
if you would like to bookmark or share your current view, Data for the entire country we usually available by
you E must first dick the'Permalink' button. The URL in 12:30 pro astern Tune (9:30 am Pacific Time).
your browser window can then be bookmarked or
shared.
NWS Inflonnetlon
US Dept or Commerce
National Oceanic and Atmospheric Acinnisaetion
National Weather Service
1325 Past West Highway
Silver Spring, MD 20910
Page Minor NWS Internet Services Team
Page last modified:1 War-2019 12:35 AM
Hourly Precipitation (East and Central US) - Data Documentation
Ask questions about the Precipitation Analysis website
Disdaimer
Information Quality
Credits
Glossary
Privacy Potiiy
Freedom of Information Act (FOIA)
AboutUs
Career Opportunhies
httpsl/wateiweather,gov/precip/ 212