NC0026824_correspondence_20090707

IMA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director Dee Freeman
Secretary
July 7,2009
Thomas H. Mercer
City Manager
City of Creedmoor
P.O. Box 765
Creedmoor,NC 27522
Subject: City of Creedmoor
Flow Reduction Request
Granville County
Dear Mr. Mercer:
On June 8, 2009,the Pretreatment, Emergency Response and Collection Systems (PERCS)Unit
received a flow reduction request for future connections to the City of Creedmoor's sewage collection system.
Additional information was received on June 12, 17 and 18. The letter requests an allowable flow rate of 256
GPD per residential customer based on the evaluated data from the WWTP and water usage data.
The City of Creedmoor's wastewater is treated by the SGWASA WWTP (NC0026824). The DMR data
for the WWTP between March 2008 and February 2009 was analyzed by central office staff. The highest flow
month for the WWTP was September. Based on the data the Division hereby grants a reduction in flow to 88
gpd/bedroom(minimum of 176 gpd for 1 and 2 bedroom residences)for sewer extension permits issued for
Creedmoor's collection system tributary to the SGWASA WWTP.
Average of 3 highest WWTP flow days in September 537,423 gpd
Commercial flow for month of September 1,813,120 gallons
School flow for month of September 831,550 gallons
Average non-residential flow for Se tember 88,156 gpd
Average residential flow for September 449,267 gpd
**1703 residents x 3 bedrooms=5,109 bedrooms 88 d/bedroom
** The spreadsheet provided had 1741 residential entries,but 38 of those were"0"and were not
included in the calculations.
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 One
Location:512 N.Salisbury St Raleigh,North Carolina 27604 NorthCarolina
Phone:[phone] FAX:[phone] Customer Service:1-877.623-6748 �t`jl/
Internet www.ncwaterquality.org �lltl;<l�
An Equal Opportunity 1 Affirmative Action Employer U

Regardless of the adjusted design daily wastewater flow rate. at no time shall the wastewater flows
exceed the effluent limits defined in the NPDES permit for the treatment facility 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 me at(919)807-6383,
email [[e-mail]].
Sincerely,
L,-a�-
Deborah Gore
PERCS Unit Supervisor
cc: Barry Herzberg,Raleigh Regional Office(via email)
Dan Boone, Wooten Company, 120 North Boylan Avenue,Raleigh,NC 27603 (via email)
NPDES Unit, Permit File NCO26824
PERCS Flow Reduction File
SWP Central File NCO026824
1617 Mail Service Center,Ralegh,North Carolina 27699-1617 One
Location:512 N.Salisbury St Ralegh,North Carolina 27604 NorthCarohna
Phone:[phone] FAX:[phone] Customer Service:1-877-623-6748 �t jN� `
Intemet www.ncwaterquality.org tl` �`
An Equal opportunity 1 Affirmative Action Employer