WQSV00015_Application_20240712

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JVeJL ENGINEERS
& ASSOCIATES. INC.
Mr. Zac Lentz, P.E.
NCDEQ/DWR — Municipal Permitting Unit
512 N. Salisbury St.
Suite 925
Raleigh, North Carolina 27604
PLANNERS
June 25, 2024
SURVEYORS LANDSCAPE ARCHITECTS
SUBJECT: Town of Williamston — Skewarkee Gut Sewer Outfall Rehabilitation
Variance Request for Minimum Slope and Distance Between Manholes
Rivers File 2023077-D
Dear Mr. Lentz,
On behalf of the Town of Williamston, we are requesting a variance from the minimum slope and
distance between manholes for gravity sewer as outlined in the Minimum Design Criteria for Permitting
of Gravity Sewer. As a part of this sewer rehabilitation project, we are lining existing 8", 15" and 16"
gravity sewer lines with Cured In Place Pipe (CIPP) lining. A narrative outlining the items for which we
are requesting a variance is included with this letter. Along with an explanation of each item.
Enclosed are the following required documents:
• One (1) original and one (1) copy of fully executed form VADC 10-23
• Two (2) sets of final signed and sealed plans
• Two (2) set of final signed and sealed specifications
• Two (2) copies of the Narrative of Variance Requests
• Two (2) copies of the Infrastructure Solutions Group jetter equipment owned by the Town of
Williamston
Should you have any questions or if we can provide any additional information that will provide a
favorable review, please do not hesitate to contact myself at [phone] ext. 6274 or Mr. Blaine
Humphrey, P.E. at [phone].
Respectfully,
'� i�e'�' ",
Kevin Cooper, P.E.
Project Engineer
cc: Blaine Humphrey, P.E., Rivers and Associates, Inc.
Mr. Stacy Stalls, Town of Williamston
File 2023077-D
P:WunilWilliamston-Skewarkee Swr_Outfall_Rehab-2023077ADMINID-PermittinglSewer Rehab Permitsl Variance l Variance
Request Cover Letter. doc
107 E. Second Street, Greenville, NC 27858 ■ PO Box 929, Greenville, NC 27835 • Phone: [phone] ■ Fax: [phone]
NCBELS Lic. No. F-0334 www.riversandassociates.com NCBOLA Lic. No. C-312

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JVel'S ENGINEERS PLANNERS SURVEYORS
& ASSOCIATES. INC.
MEMORANDUM
TO: NCDEQ/DWR — PERCS Unit
CC: Eric Pearson, Town of Williamston
Stacy Stalls, Town of Williamston
Blaine Humphrey, P.E., Rivers and Associates, Inc.
FROM: Kevin Cooper, P.E., Rivers and Associates, Inc. 16
DATE: June 25, 2024
SUBJECT: Variance Request Narrative
Town of Williamston — Skewarkee Gut Sewer Outfall Rehabilitation
Project Summary
Rivers File 2023077-D
LANDSCAPE ARCHITECTS
The purpose of this Memorandum is to outline and provide supporting information for
the Variance Requests submitted for the project. This project's primary focus is to rehabilitate
existing deteriorated gravity sewer lines comprised primarily of older clay pipes with some
ductile iron pipes. These lines vary in size of 8" and 15" for clay and 16" for ductile iron. These
lines will be rehabilitated through a combination of point repairs and lining of the pipes with
Cured In Place Pipe (CIPP) liner to reduce Inflow and Infiltration (I/I). There are numerous
segments proposed for rehabilitation that do not meet minimum slopes outlined in the Minimum
Design Criteria for Permitting of Gravity sewer and there is one (1) segment that exceeds 425
feet between manholes
The slopes of the existing lines 8" lines range from 0.19% to 1.99%, the 15" range from
0.29% to 0.66% and the 16" range from 0.04% to 2.26%. The Town has experienced Sanitary
Sewer Overflows (SSO) along the Skewarkee Gut Outfall in the past. However, the broken,
sagging, and otherwise deformed sections of gravity sewer are likely a significant contributor to
the SSO by inhibiting flow. Such pipe deformities are proposed to be repaired prior to lining
gravity sewer segments. The segments which do not meet minimum slope will be documented by
the Town as high priority lines and will regularly be examined and cleaned per regulations.
One segment of the outfall has a distance of approximately 430 linear feet between
manholes, which exceeds the maximum distance of 425 feet. However, as shown on the
attachment to this Memorandum, the Town possesses jetter equipment capable of reaching up to
500 feet. As such, cleaning and maintenance of this segment is feasible.
The primary focus of this project is to reduce infiltration and inflow, and preserve the
structural integrity of the outfall. As the Town of Williamston is a distressed unit, this project
was designed to improve their sanitary sewer system where a complete replacement would be
financially unfeasible.
107 E. Second Street, Greenville, NC 27858 • PO Box 929, Greenville, NC 27835 ■ Phone: [phone] ■ Fax: [phone]
NCBELS Lic. No. F-0334 www.riversandassociates.com NCBOLA Lic. No. C-312

Infrastructure Solutions Group BILL OF SALE
505 E. Plaza Dr.
Mooresville, NC 28115 Date: 2-6-23
Customer TOWN OF WILLIAMSTON
Address: PO BOX 506
City: WILLIAMSTON State: NC
Zip: 27892
inuLy i vescripuon Unit Price
1 2023 US JETTING 4018-300 $72,914.01
TRAILER MOUNT HIGH PRESSURE JETTING UNIT
VIN:IU9FS1314NA045018
W/ THE FOLLOWING OPTIONS:
SPARE TIRE AND RIM W/ MOUNTING BRACKET
JMS ELITE WIRELESS REMOTE CONTROL SYSTEM
DIGITAL FOOTAGE COUNTER
UPGRADE TO 1/2" X 25' LEADER HOSE
REAR TOOL BASKET
HEAVY DUTY DUMP GUN
1/4" X 100' MINI JET REEL W/ HOSE AND NOZZLE
ADDITIONAL 42" TOOL BOX
1/2" JOINTED FLEXIBLE SUPER SPIN WS
*PRICING PER NCSA HEAVY EQUIPMENT BID 23-07-0421
*TAXES ARE TO BE PAID AT THE TIME OF LICENSING/REGISTRATION
ADDITIONAL PARTS
1 1/2 Raptor Kit 10328 $2,681.91
Comments. Sub Total
Freight
NC State Tax
NC County Tax
Balance -Due
Amount
$72,91
$2,681.91
75,595.99

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