NC0060577_ Draft Fact Sheet 2023_20230926

NCDEQ / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT RENEWAL
NPDES Permit NCO060577
Caroline Robinson / Compliance & Expedited Permitting Unit / caroline.robinsonkdeq.nc.gov / Sept 2023
FACILITY INFORMATION
Aqua North Carolina, Inc. (Amanda Berger, Director of
Applicant/Facility Name
Environmental Compliance)
Beachwood WWTP
Applicant Address / Mailing
202 MacKenan Drive, Cary, NC 27511
Address
Facility Physical Address/
Old Milburnie Road (NCSR 2217), Cary, NC 27511
Permitted Flow (MGD)
0.10 MGD
Type of Waste
100% Domestic, < 1 MGD
Facility Class
WW-2
County
Wake
Permit Status
Renewal
Regional Office
RRO
STREAM CHARACTERISTICS
Receiving Stream
Neuse River
Stream
Classification
C; NSW
Stream Segment
27-(22.5)
Outfall Lat.
350 47' 55" N
7Q10 - Summer (cfs)
108.3
Outfall Long.
780 32' 24" W
7Q10 - Winter (cfs)
81.8
Drainage basin
Neuse River Basin
30Q2 (cfs)
—
Subbasin
03-04-02
Average Flow (cfs)
HUC
030202010705
Yes, added to the 303 (d) list in
2008 for Copper exceeding criteria
IWC (%)
0.14% (summer) /
303(d) List
and was added to the 303 (d) list in
0.19% (winter)
2010 for PCB Fish Tissue Advisory
exceeding criteria. Remains on the
list for both parameters.
BASIC INFO FOR EXPEDITED PERMIT RENEWAL
No — already present; The permittee requested to modify the limits for
Does permit need Daily
ammonia in March 1997 and the limits were changed to 1.0 mg/1 for
Max NH3 limits?
summer monthly averages and 2.0 mg/1 for winter monthly averages.
These limits will remain the same.
The permit contains primarily UV disinfection; however, in the event
of a UV system failure, Section A. (4) describes that chlorine
compounds may be used as a temporary means of disinfection. Section
Does permit need TRC
A. (4) also states that TRC must be monitored on a daily basis while
limits/footnote?
this disinfection method is in use and the TRC values must be reported
on the discharge monitoring report. Section A. (4) also states that TRC
in the effluent may not exceed 28 µg/L while chlorine compound
disinfection is in use.
Does permit have toxicity
No — not a complex wastestream
testing?
Does permit have any
Yes — Neuse nutrient reopener and temporary means of disinfection in
Special Conditions?
case of UV fail
Fact Sheet for Permit Renewal
Sept 2023 - NPDES Permit NCO060577 - Page 1

Does permit have instream
monitoring?
yes — U & D for Temperature and Dissolved Oxygen
New expiration date:
Oct 31, 2028
FACILITY SUMMARY
Aqua North Carolina, Inc. operates a 100% domestic wastewater treatment plant that serves a population of
310 residents. The Beachwood WWTP is a minor facility (flow < 1 MGD) with a design capacity and
permitted wastewater discharge of 0.10. The original NPDES permit for this facility was issued in February
1985. This facility utilizes the following treatment components:
• Two 300-gpm influent pumps
• 15,000-gallon equalization tank
• 125,000-gallon aeration tank
• 33,400-gallon clarifier
• 22,500-gallon sludge holding tank
• Three aeration blowers
• Ultraviolet disinfection unit
• Post -aeration
• Flow recorder
RENEWAL SUMMARY
This renewal contains the following changes:
• Added Neuse nutrient reopener condition for all Neuse River discharge permits to Part L A. (6).
• Updated eDMR language for electronic data submission in Part L A. (7).
COMPLIANCE HISTORY
Beachwood WWTP has had no enforcements since 2017. The facility has been issued six NOVs for BOD,
Fecal Coliform, and Ammonia Nitrogen limit violations in 2018 — 2022. The most recent inspection
(January 2023) showed the facility to be not in compliance with all rules and regulations; however, the
noncompliance did not require enforcement action. Specifically, the sludge blanket level was unacceptable
and only two of the three aeration tank blowers were operational during the inspection.
Fact Sheet for Permit Renewal
Sept 2023 - NPDES Permit NCO060577 - Page 2