NC0023884_Comments_20220517

EC EWED
MAY 17 2022
May 13,2022 NCDEQIDWRINPDES
Certified Mail 7015 3430 0000 4523 3783
Return Receipt Requested
Mr.Gary Perlmutter,Environmental Specialist II
NCDEQ/Division of Water Resources
NPDES Municipal Permitting Unit
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Re: Comments on Second Draft NPDES Permit
City of Salisbury WWTP
NPDES Permit No.NC0023884
Rowan County
Dear Mr.Perlmutter,
The City of Salisbury(City)submits the following comments on the subject draft permit and
Fact Sheet received by email on April 21,2022:
Draft NPDES Permit:
Cover letter
• Special Condition A(6)Effluent Pollutant Scan states sampling dates of 2021,2022
and 2023.Please update dates to 2023,2024 and 2025.
Permit Expiration Date
• The City respectfully requests that the proposed 4-year permit cycle be changed to a
5-year permit cycle with an expiration date of June 30,2027.
Supplement to Permit Cover Sheet
• Grant Creek Treatment Train treatment units need to be updated to reflect the
current plant upgrades:
- Influent pump station
- Two mechanical bar screens
- One manual bar screen
- Two mechanical vortex grit removal units
- Two 620,000 gallon flow equalization basins
- RAS&WAS pump station(remove screw pump lift station)
1 Water Street Telephone[phone]
Salisbury,NC 28144 Fax [phone]

r
Mr.Gary Perlmutter
May 13,2022
Page Two
Part I.A(1)Effluent Limitations and Monitoring Requirements(12.5 MGD)
• The Conductivity parameter has been added to effluent monitoring.The City
respectfully requests a four-month extension from the permit effective date in order
for the City's in house lab to obtain equipment and receive state certification.
Part I.A(3) Instream Monitoring requirements
• Fecal Coliform and Conductivity parameters are not listed in the Effluent
Characteristics chart with Monitoring Requirements.
• Please clarify in the permit draft if the Total Phosphorus,NO2+NO3,NH3-N,TKN
and Chlorophyll-a parameters are provisionally waived by the City as a member of
the Yadkin-Pee Dee River Basin Association.
Part I.A(4) Chronic Toxicity Permit Limit(Quarterly)
• The City respectfully requests that the monitoring for the WET testing for single
species be reduced from quarterly to two times per year based upon 1)past
compliance history and 2)low IWC of 5.3%.
Fact Sheet
Basic Facility Information
• Permitted Industrial Flow is 1.0518 mgd(Fact Sheet states 0.87 mgd).
• There are currently seven SIUs(Fact Sheet states 7&8 SIUs). HBD's pretreatment
permit#0011 was rescinded on April 27,2022.
• Four effluent pollutant scans(sampled 9/20/2016,6/13/2017,3/6/2018 and
12/4/2019)were submitted to NCDEQ.
Please contact me at(704)216-7539 or email [e-mail] if you require any
clarification or additional information regarding the subject draft permit
Sincerely,
So 'a Basinger
Environmental Services Manager
cc: Jim Behmer,Utilities Director,Salisbury-Rowan Utilities
Jim Amaral,Water Resources Manager,Salisbury-Rowan Utilities
Charles Wood,Jr.,WWTP ORC,Salisbury-Rowan Utilities
Corey Basinger,Regional Supervisor,NCDEQ/DWR/MRO