NC0024325_approval_20050728

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Michael F. Easley, Govemor
William G. RossJr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
July 28, 2005
Ron Hargrove, PE, Deputy Utilities Director
City/County Utilities
Utilities Administration
PO Box 2511
Winston-Salem, NC 27102
Subject ity of Winston-Salem
Residential Flow Reduction Approval
Forsyth County
Dear Mr. Hargrove:
On June 29, 2005, the Division of Water Quality received a flow reduction request for residences
connecting to the Winston-Salem collection system. The letter requests an allowable flow rate of 240 GPD per
single-family residential unit (three bedroom) based on the evaluated data for the current service area. As you
are aware, the issue of an approved flow reduction has been outstanding for quite some time. We appreciate
your assistance and patience in the matter and are pleased to offer a resolution.
The methodology and data evaluated for this request was discussed with you and your staff, regional
office staff and central office staff during a meeting on June 14, 2005. The evaluation included data collection
from tax records (age and bedrooms) and utility billing (water consumption) and DMR records for the treatment
plants. Based upon this data and with concurrence from our Winston-Salem Regional Office, the Division
hereby approves the use of 240 GPD per single-family residential unit (up to three bedrooms) in all applicable
non -discharge permit applications whether issued by the Division or through your delegated sewer extension
permit program. This value shall be incremented by 80 gpd per additional bedroom above three.
Regardless of the adjusted design daily wastewater flow rate, at no time shall the wastewater flows
exceed the effluent limits defined in the NPDES permits for the treatment facilities or exceed the capacity of the
sewers downstream of any new sewer extension or service connection(s).
If you have any questions or comments regarding this matter, please contact Marie Doklovic at
[phone] ext. 371.
Sincerely,
F/1an W. Klimek, P.E.
cc: Steve Tedder, Winston-Salem Regional Office
Charles Weaver, NPDES West Program
PERCS Flow Reduction File
One Pretreatment, Emergency Response and Collection Systems Unit Internet http://h2o.enr.nc.state.us/ndpu
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