NC0034959_Draft_Fact Sheet_20240206

NCDEQ/DWR/NPDES
EXPEDITED FACT SHEET - NPDES PERMIT RENEWAL
NPDES Permit NCO034959
Caroline Robinson/Compliance&Expedited Permitting Unit/caroline.robinson(kdeq.nc.gov/Jan 2024
FACILITY INFORMATION
Rowan-Salisbury Schools(Dr. Jamie Durant, Chief Operations
Applicant/Facility Name Officer)
West Rowan High School WWTP
Applicant Address/Mailing 1000 North Long Street, Salisbury,NC 28144
Address
Facility Physical Address 8050 NC Highway 801,Mount Ulla,NC 28125
Permitted Flow(MGD) 0.010 MGD
Type of Waste 100%Domestic,< 1 MGD
Facility Class WW-1 County Rowan
Permit Status Renewal Regional Office MRO
STREAM CHARACTERISTICS
Receiving Stream Withrow Creek Stream C
Classification
Stream Segment 12-108-21-3 Outfall Latitude 350 42'26"N
7Q10 - Summer(cfs) 9.9 Outfall Longitude 800 38'32"W
7Q 10 -Winter(cfs) 14.9 River basin Yadkin-Pee Dee
30Q2 (cfs) — Subbasin 03-07-06
Average Flow(cfs) 46.4 HUC 030401020502
IWC (%) 0.16%(summer)/ 303(d)List No
0.10%(winter)
BASIC INFO FOR EXPEDITED PERMIT RENEWAL
Does permit need Daily Max NH3 limits? No
Does permit need TRC limits/footnote? Yes, limit and monitoring requirements will take
effect on January 1 st,2029
Does permit have toxicity testing? No—not a complex wastestream
Does permit have any Special Conditions? Yes—Nutrient Reopener for High Rock Lake
Does permit have instream monitoring? No
New expiration date: March 31,2029
FACILITY SUMMARY
Rowan-Salisbury Schools operates a 100%domestic wastewater treatment plant for an estimated 1,190
people.West Rowan High School WWTP is a minor facility(flow< 1 MGD)with a design capacity and
permitted wastewater discharge of 0.010 MGD. The permit for the WWTP was originally issued in August
1981. This facility utilizes the following treatment components:
• Septic tank
• Dosing tank
• Alternating dual surface sand filter
• In-ground effluent holding tank
Fact Sheet for Permit Renewal
Jan 2024-NPDES Permit NCO034959-Page 1

RENEWAL SUMMARY
This renewal contains the following changes:
• Updated eDMR language for electronic data submission in Part I. A. (3).
• The Mooresville Regional Office stated that the results of a dye test conducted at the discharge
point indicated that there is a lack of mixing of the effluent with the receiving stream;therefore,
MRO recommended adding chlorination to the effluent. A total residual chlorine limit was added to
the table in Part I A. (1.)which will take effect on January lst,2029.
COMPLIANCE HISTORY
West Rowan High School WWTP has not had an enforcement on record since 2000. The facility has been
issued one NOV for a pH limit violation in 2023 since the permit was issued in February 2020.Most recent
inspection(October 2020) showed the facility to be in compliance.
COMMENTS ON DRAFT PERMIT
• Mr. Roberto Scheller(Environmental Consultant,Mooresville Regional Office)noted that effluent
samples were collected at the facility during November and December 2018 at the end of pipe
effluent discharge point., and the results of fecal coliform were greater than 2500/100 ml. Mr.
Scheller also stated that a dye test conducted at the discharge point indicated that there is a lack of
mixing of the effluent with the receiving stream and the dye did not mix for at least 100 feet
downstream.MRO recommended adding chlorination to the effluent at this facility. Therefore,a
total residual chlorine limit was added to the table in Part I.A. (1.)which will take effect on
January 1',2029. This delay is to allow time for the installation of disinfection equipment.
Fact Sheet for Permit Renewal
Jan 2024-NPDES Permit NCO034959-Page 2