WQCSD0090_Residential Flow Reduction Approval_20220422

DocuSign Envelope ID.OACEADCO-5661-468E-A790-18CF88D11 BDB
ROY COOPER i' -
A)Governor INNA . .
ELIZABETH S.BISER
a' j0 Secretary � ��
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
April 22,2022
Mr.Walter Jay Warren, Mayor 1
Town of Micro
450 US Hwy, 301 North
Micro,NC 27555
Subject: Residential Flow Reduction Approval
Town of Micro(WQCSD0090)
Johnston County
Dear Mr. Warren:
On February 22,2022,the Division of Water Resources(Division)received a request for an
adjusted daily sewage flow rate(flow reduction)that would apply to all permitted but not yet
tributary residential connections and all future residential connections within the Town of Micro
service area. Additional information was requested by the Division and was received on March
16,2022.
In accordance with 15A NCAC 02T .0114(0(2),the Division has evaluated the request,and
based on the data submitted, the Division hereby approves for use by the Town of Micro an
adjusted daily sewage design flow rate with the following conditions:
• The flow reduction is applicable to residential single-family dwellings only.
• The minimum flow for 1-and 2-bedroom dwellings shall be 160 gallons per day.
• Each additional bedroom above two bedrooms shall increase the volume by 80 gallons
per day per bedroom.
• This flow reduction shall not apply to sewer extension applications and/or permits for any
other public or private organizations whose wastewater flows are or might become
tributary to the Town of Micro collection system(WQCSD0090.)
Future sewer extension applications should be made using the flow reduction amount stated
above. All other aspects of the permitting process remain unchanged, and all applications must
be in compliance with the statutes,rules,regulations and minimum design criteria as certified by
the owner and engineer.
Regardless of the adjusted design daily wastewater flow rate,at no time shall the wastewater
flows exceed the effluent limits defined in the permit for the treatment facility or exceed the
capacity of the sewers downstream of any new sewer extension or service connection(s).
North Carolina Department of Environmental Quality I Division of Water Resources
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512 North Salisbury Street 1 1611 Mail Service Center I Raleigh North Carolina 27699-161 I
"cR`HCNickih4 919.707.9000
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DocuSign Envelope ID.OACEADCO-5661-468E-A790-18CF88D11 BDB
In accordance with 15A NCAC 02T .0114(f),the Division periodically requires reassessment of
wastewater flow data associated with the collection system or the receiving wastewater treatment
plant as applicable to confirm the suitability of the approved flow reduction value. The Town of
Micro shall submit documented,representative data in accordance with 15A NCAC 02T
.0114(f)(1)(A-H)prior to April 30,2030. Failure to submit the required data by this date will
result in this flow reduction approval letter becoming null and void.Upon review of the data,the
Division shall either reapprove,modify or not grant reapproval for the previously approved flow
reduction value.
The granting of this flow reduction does not prohibit the Division from reopening,revoking,
reissuing and/or modifying the flow reduction as allowed by the laws,rules,and regulations
contained in 15A NCAC 02T,NCGS 143-215.1,or as needed to address changes in State and/or
Federal regulations with respect to wastewater collection systems,protection of surface waters,
and/or wastewater treatment.
If you have any questions,please contact Charlie Miller, P.E. at(919) 707-3627 or by email at
Charlie.Miller(t incdenr.gov.
Sincerely,
CDocusigned by:
hime do
C464531431544FE...
for Richard E. Rogers,Jr.
Director,Division of Water Resources
by Michael Montebello
Municipal Permitting Unit,Division of Water Resources,DEQ
CC: Michael McAllister,Municipal Engineering,Inc. (mmcallister(limesco.com)
Raleigh Regional Office,Water Quality Regional Operations
Municipal Permitting Unit(electronic copy)
North Carolina Department of Environmental Quality I Division of Water Resources
D E Q�� Sl2 North Salisbury Street I1611 Mail Service Center I Raleigh,North Carolina 27699-Itil 1
c""o' ` 919.707.9000
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