NC0065749_Renewal (Application)_20201105

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Governor �'
MICHAEL S.REGAN \.:::
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Secretary
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
November 10, 2020
Charlotte Water
Attn: Jacqueline A. Jarrell, Deputy Dir.
5100 Brookshire Blvd
Charlotte, NC 28216-3371
Subject: Permit Renewal
Application No. NC0065749
Ashe Plantation WWTP
Mecklenburg County
Dear Applicant:
The Water Quality Permitting Section acknowledges the November 5, 2020 receipt of your permit renewal application
and supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW
permitting branch. Per G.S. 150B-3 your current permit does not expire until permit decision on the application is made.
Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit. The
permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a
timely manner to requests for additional information necessary to allow a complete review of the application and renewal
of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
Sincerely,
arxervfda go
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
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CHARLOTTE
WTER
October 22, 2020 RECEIVED
NOV 0 5 2020
ATTN: Mr. John Hennessy
NCDEQ/DWR/NPDE
NC DEQ/DWR
NPDES Compliance and Expedited Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: NPDES Permit Renewal Application
Ashe Plantation WWTP— NPDES Permit#NC0065749
Mr. Hennessy:
Application Overview
Please find the enclosed NPDES permit renewal application for Ashe Plantation WWTP. Below are a few
key points regarding the information that is included in the package:
1. Section#8 in the application is addressed with Attachment#1 (Outfall Map).
2. Section#10 (description of the treatment system) is addressed with Attachment#2.
3. The table in Section #13 is based on data collected from 01/01/19—08/31/20.
Modification Requests
In addition to the submission of the standard application materials, CLTWater is also respectfully
requesting that the Division of Water Resources (DWR) make two modifications to this permit upon
renewal:
1. Reduce the Measurement Frequency for effluent temperature from Daily to Weekly. We are not
aware of any reason that this parameter needs to be monitored this frequently. During a recent
inspection and discussion with DWR regional staff, there was speculation that this frequency was
simply a relic from past iterations of this permit. Adjusting this frequency to Weekly would also
bring this permit in line with the Oxford Glen permit, which is similar in terms of plant effluent and
receiving stream characteristics.
2. Modify the permit language specifying where the Upstream sample is to be collected. Currently
the permit says`Upstream =approximately 50 feet above the discharge point.", however due to a
steep embankment that is a safety issue for our laboratory staff, CLTWater requests that this
language be modified to allow for upstream sampling "...approximately 15 feet above the
discharge point. This issue was also discussed with DWR regional staff during our inspection
and the relocation of our upstream monitoring location to`approximately 15 feet above the
discharge point" this was their recommendation.
Charlotte Water 5100 Brookshire Blvd,Charlotte,NC 28216 Charlottewater.org
operated by the City of Charlotte

Thank you for your efforts in renewing this NPDES permit. Please let us know if you have any questions
or need any further information. You may contact Shannon Sypolt, Water Quality Program Administrator,
at 704-634-6984 or Jeremy Nance, ORC of Ashe Plantation WWTP, at 704-634-3389. You may also
contact me at 704-336-5433.
Respectfully,
abqueline A. Jarr I , P.E.
l Deputy Director
Charlotte Water
Cc: J. Nance, S. Sypolt, J. Lockler
Charlotte Water 5100 Brookshire Blvd,Charlotte,NC 28216 charlottewater.org
47.•
Operated by the City of Charlotte

NPDES APPLICATION FOR PERMIT RENEWAL - FORM A
For Publicly Owned Treatment Works (POTW) or other treatment systems treating
domestic wastes < 0.1 MGD with no pretreatment program.
Mail the complete application to:
N. C. DEQ / DWR / NPDES
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit [NC0065749
If you are completing this form in computer use the TAB key or the up - down arrows to move from one
field to the next. To check the boxes, click your mouse on top of the box. Otherwise,please print or type.
1. Contact Information:
Owner Name Charlotte Water
Facility Name Ashe Plantation WWTP
Mailing Address 5100 Brookshire Blvd
City Charlotte
State / Zip Code NC / 28216
Telephone Number [phone]
Fax Number [phone]
e-mail Address [e-mail]
2. Location of facility producing discharge:
Check here if same address as above ❑
Street Address or State Road 8634 Quarters Lane
City Mint Hill
State / Zip Code NC / 28227
County Mecklenburg
3. Operator Information:
Name of the firm,public organization or other entity that operates the facility. (Note that this is not referring
to the Operator in Responsible Charge or ORC)
Name Charlotte Water c/o Jackie Jarrell
Mailing Address 5100 Brookshire Blvd.
City Charlotte
State / Zip Code NC / 28216
Telephone Number [phone]
Fax Number [phone]
4. Population served: Approximately 208 Homes
1 of 3 Form-A 4/2020

NPDES APPLICATION FOR PERMIT RENEWAL - FORM A
For Publicly Owned Treatment Works (POTW) or other treatment systems treating
domestic wastes < 0.1 MGD with no pretreatment program.
5. Do you receive industrial waste?
® No ❑ Yes (if you have an approved pre-treatment program, must complete Form 2A)
6. Type of collection system
® Separate (sanitary sewer only) ❑ Combined (storm sewer and sanitary sewer)
7. Outfall Information:
Number of separate discharge points 1
Outfall Identification number(s) 001
Is the outfall equipped with a diffuser? ❑ Yes ® No
8. Name of receiving stream(s) (Provide a map showing the exact location of each outfallj:
Duck Creek-See Attachment#1
9. Frequency of Discharge: 4 Continuous [ Intermittent
If intermittent:
Days per week discharge occurs: N/A Duration: NJA
10.Describe the treatment system
List all installed components, including capacities,provide design removal for BOD, TSS, nitrogen and
phosphorus. If the space provided is not sufficient, attach the description of the treatment system in a
separate sheet of paper.
See Attachment #2
11. Flow Information:
Treatment Plant Design flow 0.10 MGD
Annual Average daily flow 0.0474 MGD (for the previous 3 years)
Maximum daily flow 0.1564 MGD (for the previous 3 years)
12. Is this facility located on Indian country?
❑ Yes ® No
2 of 3 Form-A 4/2020

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NPDES APPLICATION FOR PERMIT RENEWAL - FORM A
For Publicly Owned Treatment Works (POTW) or other treatment systems treating
domestic wastes < 0.1 MGD with no pretreatment program.
13. Effluent Data
Provide data for the parameters listed.Fecal Coliform, Temperature and pH shall be grab samples,for all other
parameters 24-hour composite sampling shall be used. Effluent testing data must be based on at least three
samples and must be no more than four and one half years old.
Parameter Daily Monthly Units of Number of
Maximum Average Measurement Samples
Biochemical Oxygen Demand 2.3 0.0 mg/L 93
(BOD5)
Fecal Coliform 77 2 cfu/100 mL 87
Total Suspended Solids 7.3 0.1 mg/L 93
Temperature (Summer) 27.6 22.9 Deg C 262
Temperature (Winter) 20.2 14.1 Deg C 170
pH 7.8 N/A su 431
14. List all permits, construction approvals and/or applications:
Type Permit Number Type Permit Number
Hazardous Waste (RCRA) NESHAPS (CAA)
UIC (SDWA) Ocean Dumping(MPRSA)
NPDES NC0065749 Dredge or fill(Section 404 or CWA)
PSD (CAA) Special Order of Consent(SOC)
Non-attainment program (CAA) Other
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15. APPLICANT CERTIFICATION
I certify that I am familiar with the information contained in the application and that to the best
of my knowledge and belief such information is true, complete, and accurate.
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Printed name of Person Signing Title
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Applicant ' .'6 Date
North Carolina General Statute 143-215.6 (b)(2) states: Any person who knowingly makes any false statement
representation, or certification in any application, record, report, plan, or other document files or required to be
maintained under Article 21 or regulations of the Environmental Management Commission implementing that
Article, or who falsifies, tampers with, or knowly renders inaccurate any recording or monitoring device or method
required to be operated or maintained under Article 21 or regulations of the Environmental Management
Commission implementing that Article,shall be guilty of a misdemeanor punishable by a fine not to exceed$25,000,
or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides a punishment by a fine
of not more than $25,000 or imprisonment not more than 5 years, or both, for a similar offense.)
3 of 3 Form-A 4/2020

Attachment #1 - Outfall Map
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Attachment #2 - Treatment System Description
Ashe Plantation is a steel package plant that was approved for construction by the State of NC in February
1987 and constructed shortly thereafter. Although the influent lift station is below grade, the entire
treatment processes is above ground. Since CLTWater purchased the plant in 2016, several significant
improvements have been made at this facility. Thermal insulation blankets have been installed along the
treatment train walls in order mitigate low winter temperatures. Other major improvements are designated
with an asterisk (*) below in the equipment list.
•Influent Lift Station (Recently upgraded to provide 3 pumps in parallel)*
•1,000 gallon chemical feed tank for pH stability and alkalinity addition*
.75Kw propane powered back-up generator
•manually cleaned bar screen (0.5" spacing)
•15,000 gallon equalization basin
•125,000 gallon aeration basin with diffusers
•3 20-HP aeration blowers*
'Rectangular hopper-bottom clarifier
.1 Disc filter unit with 4 sections capable of treating 0.180 MGD ADFJ.450 MGD Peak (10 micron)*
•2 UV disinfection banks
•Back-up chlorine tablet disinfection system
•Concrete effluent metering vault*
•Effluent flow meter
•Post aeration chamber with 3-HP blower*