WQCS00068_NOV-2020-DV-0200 Response_20200616

South Granville Water and Sewer Authority
June 16, 2020
Scott Vinson, Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
1628 Mail Service Center
Raleigh, NC 27699-1628
Re: Written Response to NOV-2020-DV-0200
South Granville Water and Sewer Authority
Collection System Permit No. WQCS00068
South Granville Water and Sewer Authority (SGWASA)
Granville County
Dear Mr. Vinson:
NC Dept -of gnvironrrrema!-Qua iity
JUN 21 2020
Raleigh Regional Office
I am writing you in response to NOV-2020-DV-0200 which included Incident Numbers: 202000070;
202000398; 202000401; and 202000404. SGWASA received the NOV-2020-DV-0200 notification letter
from NCDEQ on May 8, 2020. Following is an overview and response by SGWASA to these incidents.
Incident No. 202000070 (1/12/2020): 335 Park Ave Overflow
The overflow total at this location (manhole #5354) was 2,000 gallons, of with 1,000 gallons
reached surface water. Upon notification of the overflow, the SGWASA maintenance crew
arrived on site and used a hydro jet machine to thoroughly clean upstream and downstream of
manhole #5354. When a camera was inserted into the line, roots were found at two locations
within line. Subsequently, a root saw was used to cut the roots, followed by a jet machine hose
with a terminator bit attached to further clean the line. The camera was then used to inspect
the line following the maintenance, of which no roots were found. In terms of proactive
maintenance, this location was immediately placed on a twice -a -month cleaning schedule. This
location is scheduled to be cleaned and CCTV'd by a contractor to further determine if pipe
repairs are needed to prevent further root growth.
Incident No. 202000399 (2/6/2020): 6 STREET #2 PUMP STATION
The overflow at this location occurred during a heavy rainfall event on 2/6/20. Rainfall recorded
during this event was 3.5 inches. The overflow total at this location (manhole #1804) was 375
gallons, of which 375 gallons reached surface water. Crews inspected, cleaned and applied lime
to area affected.
Incident No. 20200040112/6/20201: E. MIDDLETON Rd. PUMP STATION
The overflow at this location occurred during a heavy rainfall event on 2/6/20. Rainfall recorded
during this event was 3.5 inches. The overflow total at this location (manhole #3089) was 9,900
gallons, of which 9,900 gallons reached surface water. Crews inspected, cleaned and applied
lime to area affected.

Incident No. 202000404 (2/6/2020): FRANKLIN STREET
The overflow total at this location (manhole #4152) was 390 gallons, of which 0 gallons reached
surface water. Notice of Violation not issued.
Based on a review of the weather conditions and site conditions observed by staff on initial arrival to
these overflows SGWASA submits that these discharges were unintentional, temporary and caused by
factors beyond the reasonable control of SGWASA and could not have been prevented by the exercise of
reasonable control.
Asset Management/CIP Proiects to Mitieate Future Overflows
During the past year SGWASA invested in a new asset management/work management program to
better manage maintenance activities for SGWASA's utility assets, improve customer service, and
provide forecasts of needed future capital improvement projects. The asset management program,
presently in its initial stages of implementation, will help SGWASA to be more proactive in sanitary
sewer maintenance, including cleaning, televising, root cleaning, pipe repairs, Inflow and Infiltration (I&I
investigations/follow up, etc.
In addition to the new asset management/work management program, earlier this year SGWASA
initiated hydraulic model building for the wastewater collection system. The hydraulic model is assisting
SGWASA with a better understanding of hydraulic conditions and restrictions throughout the collection
system. Furthermore, the hydraulic model is assisting SGWASA in identifying priority projects, such as
pipe replacements, pump station upgrades, manhole repairs, I&I problems, etc.
This past year, SGWASA also invested in professional engineering assistance in developing an I&I
issues/mitigation strategy across the sanitary sewer system. These proposed I&I studies, although
limited in scope presently, are focused on areas that are causing issues with overflows, such as those
highlighted above. To enhance these efforts, SGWASA is also pursuing assistance from the vendor
SmartCover to help with the monitoring and alerting of collection system flow issues.
Lastly, during the past two years, SGWASA invested in a major sanitary sewer study near the 1-85
corridor in the Town of Butner to identify flow issues, along with proposing solutions to these flow
issues. The 1-85 corridor study specifically focused on two major sanitary sewer interceptors, along with
several sanitary sewer pump stations that feed into the interceptors. Two pump stations that are
scheduled for upgrades include the E. Middleton Rd. pump station, and the Joe Peed pump station. The
total estimated cost of the 1-85 sanitary sewer work is $50 million.
Regarding the 1-85 sanitary sewer project, I have worked recently with consultants to create a tactical
schedule that includes engineering design/construction costs for the project. Furthermore, during the
past several months I have visited with several agencies, including the USEPA, the USRDA, and NCDEQ,
to identify funding/grant opportunities to fund the $50 million project. SGWASA has also invested in
preparing the engineering design Request for Qualifications (RFQ), of which will be released to
engineering firms shortly. Lastly, in July I'm meeting with the SGWASA Board of Directors again to
discuss the funding options and resulting effects on utility rates so SGWASA can better determine a
construction timeline.
Based on the information contained in this letter, I hope it is apparent to the NCDEQ- Division of Water
Resources, that SGWASA is actively, and aggressively pursuing system -wide improvements to their
sanitary sewer collection system. I hope that you take this into account as you determine what actions
you will be taking regarding the sanitary sewer overflows that have occurred, as outlined above.

I look forward to discussing this information further with you. Please contact me at your convenience.
C Schroyer, Executive Director
Granville Water and Sewer Authority (SGWASA)
415 Central Avenue, Suite B.
Butner, NC 27509
919-575-3367 Ext. 312
[e-mail]
Q. Fred Dancy, SGWASA Utility Operations Director
Robert Jackson, Acting Distribution and Collection System Superintendent