WQCS00002_Varience Request_20180209

Water Resources
ENVIRONMENTAL QUALITY
February 9, 2018
Eileen Navarrete, P.E., Engineering Manager
City of Raleigh Public Utilities
P.O. Box 590
Raleigh, NC 27602
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
Subject: Variance Request Approval
Crabtree Basin Wastewater System Conveyance Improvements Phase II
City of Raleigh - WQCS00002
Dear Ms. Navarrete:
The Division of Water Resources (Division) has reviewed the submitted variance request
received on February 2, 2018 for the subject project. The Division will grant the variance
request for the installation of gravity sewer below the minimum required slope, in accordance
with the provisions for alternative design under 15A NCAC 02T.0105(n):
1. Pursuant to the variance request received February 2, 2018 from CJS Conveyance, PLLC
on behalf of the City of Raleigh, a variance is granted for the construction and operation
of approximately 454 linear feet of 54 -inch gravity sewer between Manholes No. 60A
and No. 63 at a slope of -0.026% as indicated on the provided as -built plans and
supporting documents, and subject to the following requirements:
a. The section of gravity sewer as described above shall be designated as "high-
priority sewer" in accordance with 15A NCAC 02T. 0402.
b. High-priority sewers shall be inspected by the permittee or its representative at
least once every six -months.
Regardless of the variance approval, in the event that the wastewater collection facilities fail to
perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take
immediate corrective action, including those as may be required by this Division, such as the
construction of additional or replacement facilities.
All other elements of this project shall be constructed in accordance with all applicable rules
and statues including, 15A NCAC 2T; the Division of Water Resources' (Division) Gravity Sewer
Minimum Design Criteria adopted February 12, 1996 as applicable; and the Division's Minimum
!---' Nothlnq Compares
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919-807-6300

City of Raleigh
WQCS00002
Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1,
2000 as applicable. Approval of the variance request does not constitute approval of the
permit.
If you have any questions, please contact Christyn Fertenbaugh, P.E. at 919-807-6312 or via
email at [e-mail].
Sincerely,
for Linda Culpepper
Interim Director, Division of Water Resources
by Deborah Gore, PERCS Supervisor
Division of Water Resources, NCDEQ
cc: Chris L. Windley, P.E., CJS Conveyance, PLLC ([e-mail])
Raleigh Regional Office, War.er Quality Section Regional Operations
Water Quality Central Files — WQCS00002
PERCS Files (electronic copy)