NC0040011_Draft Fact Sheet_20231005

NCDEQ / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT RENEWAL
NPDES Permit NC0040011

Sara Bassett / Compliance & Expedited Permitting Unit / [e-mail] / October 2023
FACILITY INFORMATION
Applicant/Facility Name Town of Yanceyville, Yanceyville WWTP
Applicant Address PO Box 727 Yanceyville NC 28604
Facility Physical
Address/Mailing Address 666 Pine St, Yanceyville NC 27379
Permitted Flow (MGD) 0.6 MGD
Type of Waste 100% Domestic, < 1 MGD
Facility Class WW-2 County Caswell
Permit Status Renewal Regional Office Winston-Salem
STREAM CHARACTERISTICS
Receiving Stream Country Line Creek Stream
Classification C
Stream Segment 22-56-(3.7) Outfall Lat. 36.3886N
7Q10 - Summer (cfs) 1.2 Outfall Long. 79.3408W
7Q10 - Winter (cfs) 4.9 Drainage basin Roanoke
30Q2 (cfs) 6.4 Subbasin 04-02-01
Average Flow (cfs) 44 HUC 060101030301
303(d) List No

BASIC INFO FOR EXPEDITED PERMIT RENEWAL
Does permit need Daily Max NH3 limits? Weekly average limits already present
Does permit need TRC limits/footnote? Already present
Does permit have toxicity testing? Yes, all tests but one passed since 2019
Does permit have any Special Conditions? Expansion provision to 0.6 MGD
Does permit have instream monitoring? Yes pH, D.O., temperature
New expiration date: November 30, 2028

FACILITY SUMMARY

The Yanceyville WWTP is a minor municipal facility (flow<1 MGD) that receives 100% domestic
waste. The design capacity for the treatment system is 0.45 MGD and the permitted flow is 0.6
MGD. The facility consists of the following components:

♦ Bar screen
♦ Diversion box
♦ Dual train aeration basins
♦ Dual equalization tanks
♦ Dual two-chamber clarifiers
♦ Chlorine contact chamber
♦ Tertiary filter unit with mudwell chamber
♦ Dechlorination
♦ Flow meter
♦ Re-aeration
♦ Emergency generator

RENEWAL SUMMARY
This renewal contains the following changes:
• Updated Section A. (2) to reflect current federal requirements for Electronic Reporting of
Discharge Monitoring Reports.
• Winter ammonia limits have been adjusted to be no less stringent than two times the
summer limit in accordance with 15A NCAC 02B.0404 (c). This new limit will become
effective two years after the date this permit goes into effect.
• Corrected error in effluent table, Mercury monitoring now reflects a monthly frequency
instead of “once per permit cycle” for both 0.45 MGD and 0.6 MGD flow. Limit
remains the same.

COMPLIANCE HISTORY

Numerous NOV and 6 enforcements in the last permit cycle.

COMMENTS ON DRAFT PERMIT