NC0029033_Approval_20211021

October 21, 2021

Mr. Jonathan W Ham, PE, Engineering Supervisor
City of Raleigh Public Utilities Department
PO Box 590
Raleigh, N. C. 27601

Subject: City of Raleigh
Neuse River WWTF -NC0029033
Sanitary Sewer Flow Allocation
Block Flow Approval No. 78
Wake County

Dear Mr. Ham:

On April 10, 1986, the Environmental Management Commission granted full delegation authority to the City
of Raleigh to issue certain sanitary sewer extension permits. In conjunction with that delegation, this office
has been allowing the City to issue those permits based upon a block flow approval process. Previously, the
Raleigh Regional Office has granted block flow approvals for the Neuse River WWTF totaling 40,800,000 GPD.
As requested in your letter dated October 14, 2021, this office hereby grants an additional block flow
allocation of 1,000,000 GPD, yielding a total of 41,800,000 GPD granted for that facility. The Neuse River
WWTF has a permitted and constructed capacity of 75.0 MGD. Based upon the City’s Quarterly Report ending
in June 2021, the Neuse River WWTF had a 12-month flow average of 49.3 MGD, or approximately 65.7% of
the permitted capacity.

As the City issues permits, the wastewater flow associated with those permits will be subtracted from the
block flow allocation. The City may request an additional allocation at any time the remaining flow allocation
is insufficient to meet the City’s permitting demands.

The Raleigh Regional Office requires that the City submit a quarterly report for the Neuse River facility. The
report should be received by the Raleigh Regional Office no later than January 15th, April 15th, July 15th, and
October 15th, and must provide the following information for the permits that have been issued:

1) Permit Numbers
2) Permit Issue Dates
3) Permit Holders
4) Name of Projects
5) Project Wastewater Flow
6) Total Project Wastewater Flow for the Quarter
7) Summary of Activities for Violations of the Permitting Process

Additionally, the report must provide the following information:

1) Running total to date of flow allocated to the City by the Raleigh Regional Office






 
2) Running total to date of flow from permits issued
3) Flow which remains from previous allocations from the Raleigh Regional Office
4) Running total of flow which has been depleted from the allocation by Issued permits, but
which has not yet become tributary to the WWTF
5) Total flow (also includes flow from permits issued prior to the implementation of the block
flow approval process) not yet tributary to the WWTF
6) Most recent twelve month flow average of the WWTF

The Raleigh Regional Office prefers these reports be submitted electronically, to the contact name shown
below. Paper copies of permits issued by the City are not required by the Regional Office. Please submit
electronic copies to the following: [e-mail], [e-mail] and
[e-mail].

The Raleigh Regional Office reserves the right to suspend this block flow approval process if problems occur
with the functionality of this program, if problems occur with the compliance status of the WWTF, or if other
situations occur which might jeopardize the successful operation of this program.

If you have any questions regarding this matter, or need any additional information, please contact Jason
Robinson at [e-mail].

Sincerely,

____________________________
for S. Daniel Smith
Director, Division of Water Resources

Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ

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