NC0082949_Fact Sheet_20200121 (2)

FACT SHEET FOR EXPEDITED PERMIT RENEWALS
This form must be completed by Permit Writers for all expedited permits which do not require
full Fact Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile
home parks, etc) that can be administratively renewed with minor changes, but can include
facilities with more complex issues (Special Conditions, 303(d) listed water, toxicity testing,
instream monitoring, compliance concerns).
Basic Information for Expedited Permit Renewals
Permit Writer / Date
Brianna Young 1/21/2020
Permit Number
NCO082949
Facility Name / Facility Class
Denton WTP / PC-1
Basin Name / Sub -basin number
Yadkin Pee -Dee / 03-07-08
Receiving Stream / HUC
UT to Yadkin River / 0304010306
Stream Classification / Stream Segment
WS-IV, B; CA / 12- 124.5
Does permit need Daily Maximum NH3
limits?
N/A
Does permit need TRC limits/language?
Alread resent
Does permit have toxicity testing? IWC (%) if
so
Yes; IWC = 90%
Does permit have Special Conditions?
No
Does permit have instream monitoring?
Yes — added hardness monitoring
Is the stream impaired (on 303(d) list)?
No (impaired just upstream at High Rock
Dam for chlorophyll -a and PCB fish tissue
advisory)
Any obvious compliance concerns?
Yes — see below
Any permit mods since lastpermit?
None
New expiration date
1/31/2024
Comments on Draft Permit?
Yes — see below
Facility Overview:
The Town of Denton operates a conventional WTP designed for a potable flowrate of
2.25 MGD. The facility generates intermittent discharge with approximately 90% of the
wastewater coming from the sedimentation basins, and approximately 10% coming from
backwashing the sand filters. Raw water treatment consists of additions of powder
activated carbon and potassium permanganate, alum during flash mixing, caustic soda,
sedimentation basin, chlorine added in the sand filters, additions of fluoride, chlorine,
corrosion inhibitor, and caustic soda before the clear well and out to the distribution
system.
The facility has the potential to discharge the following chemicals:
• Alum/aluminum sulfate
• Caustic soda
• Orthopolyphosphate blend
• Potassium permanganate