NCG590034_Fact Sheet_20210113

DEQ/DWR
FACT SHEET -- NPDES PERMIT RENEWAL
NPDES PERMIT NCO085511 4 NPDES GENERAL PERMIT NCG5900034
Facility Information
Applicant/Facility Name:
Mills River Water Treatment Facility [WTP]
Applicant Address:
City of Asheville; 4037 Haywood Road; Mills River, NC 28759
Facility Address:
Same as above
Permitted Flow
Not limited; episodic/ intermittent @ 0.05 MGD
Type of Waste:
treated backwash from activated carbon filters
Facility/Process/Permit Status:
WTP / Conventional, Class I / Renewal
County:
Henderson Count
Miscellaneous
Receiving Stream:
French Broad
River
Stream Classification:
WS-IV, B, CA
Subbasin:
04-03-02
Index No.
6- 52.5
Drainage Area (mi2):
n/a
HUC:
060101050404
*Summer 7Q10 (cfs)
316
303(d) Listed?
No
*Winter 7Q10 (cfs):
390
Regional Office:
Asheville
*30Q2 (cfs)
578
State Grid / USGS
Quad:
F8NE / Skyland, NC
*Average Flow (cfs):
1388
Permit Writer:
Emily DelDuco
IWC (%):
< 0.1%
Date:
31Aug2O2O
* NOTE: Stream -flow data assumes confluence of two creeks downstream [from NPDES permit NC0000094].
BACKGROUND
The City of Asheville operates this water treatment plant [WTP] producing up to 7.5 MGD of potable
water extracted from the Mills River. In 1996 the Division issued an Authorization to Construct (ATC)
permit to the previous regional water authority for settling lagoons, but in 2006 ownership was
transferred to the City of Asheville and formally named the Mills River Water Treatment Facility. Treated
filter backwash (about 0.050 MGD) is discharged to the main stem of the French Broad River (see Site
Map) resulting a negligible instream waste concentration (IWC = < 0.1 %). The receiving -stream segment
is currently classified WS-IV, B, CA.
Wastewater Treatment. This WTP facility utilizes conventional wastewater -treatment technology
[coagulation, flocculation, sedimentation, and disinfection]. The Permittee adds alum and other additives
prior to mixing [see permit Supplement to Cover Sheet]. Conventional treatment is finalized by filtration
through three (3) multimedia gravity filters. The Permittee backwashes the filters at minimum once every
96 hours; more often as needed, based on filter -head pressure. Flow-meter/recorders monitor the
backwash events and provide data for the DMR.
The Permittee backwashes the filters with finished drinking water treated with chlorine derivatives
(disinfectant), zinc orthophosphate (anti-scalant), and fluoride. Ammonia is not used.
Upon initiating each backwash, the operator doses the effluent with the appropriate amount of
dechlorination chemical. The discharge is diverted to one of two (2) each 750,000-gallon settling lagoons
where the treated wastewater decant is allowed to flow to the outfall. As needed each lagoon can be
isolated to allow further solids dewatering and sludge removal. A Sludge Management Plan is in place,
and states that annually a contractor pumps the accumulated sludge from the lagoons, and disposes into an
approved manhole of The Metropolitan Sewer District.
Fact Sheet — Renewal Aug2020
NPDES NCO085511
Page 1 of 3

COMPLIANCE HISTORY
The facility's compliance history is excellent; no enforcements or NOVs from this permit cycle.
The Permittee requires Quarterly Acute WET testing based on IWC < 0.25 % - all tests were passed. One
failure occurred in November 2019 but the facility passed after re -testing. No change recommended.
Summary of DMR Database [Jan2016-June2020]
Analvsis Variable: Value
Parameter
jMeanjMinimumjMaximumj
N
00070 - Turbidity
1.18
0.28
13.60
221
00400 - pH
7.22
6.70
7.60
222
00951 - Fluoride, Total (as F)
0.15
0.08
0.50
18
01042 - Copper, Total (as Cu)
0.67
0.00
2.00
18
01045 - Iron, Total (as Fe)
0.07
0.07
0.07
1
01055 - Manganese, Total (as Mn)
19.90
0.01
89.00
18
01092 - Zinc, Total (as Zn)
11.77
0.01
37.00
18
01105 - Aluminum, Total (as Al)
0.68
0.18
2.50
18
50050 - Flow, in conduit or thru treatment plant
0.05
0.00
0.07
1643
50060 - Chlorine, Total Residual
20.06
20.00
27.00
222
C0530 - Solids, Total Suspended - Concentration
3.35
2.50
14.50
219
C0600 - Nitrogen, Total - Concentration
0.34
0.10
1.85
18
C0665 - Phosphorus, Total (as P) - Concentration
0.05
0.02
0.32
18
The need for toxicant limits is based upon a demonstration of reasonable potential to exceed
water quality standards, a statistical evaluation that is conducted during every permit renewal
utilizing the most recent effluent data for each outfall. The RPA is conducted in accordance with
40 CFR 122.44 (d) (i). The NC RPA procedure utilizes the following: 1) 95% Confidence
Level/95% Probability; 2) assumption of zero background; 3) use of/2 detection limit for "less
than" values; and 4) streamflows used for dilution consideration based on 15A NCAC 213.0206.
Effective April 6, 2016, NC began implementation of dissolved metals criteria in the RPA
process in accordance with guidance titled NPDES Implementation of Instream Dissolved Metals
Standards, dated June 10, 2016.
Maximum monthly average flow in past 36 months (Qw) = 0.064 MGD (Dec 2019)
A Reasonable Potential Analysis was conducted for copper, fluoride, and zinc using data from the
past 4 1/2 years (Jan 2016-June 2020).
• Monitoring Only. For individual permits: The following parameters will retain a monitor -only
requirement since they did not demonstrate reasonable potential to exceed applicable water
quality standards/criteria, but are additives during the treatment process: Fluoride, Aluminum
• No Limit or Monitoring: For individual permits: The following parameters will not receive a
limit or monitoring, since they did not demonstrate reasonable potential to exceed applicable
water quality standards/criteria and the maximum predicted concentration was <50% of the
allowable concentration: Copper.
Fact Sheet - Renewal Aug2020
NPDES NCO085511
Page 2 of 3

PERMIT RENEWAL STRATEGY
For renewal, the Division referenced the Water Treatment Plant Guidance (2009) for conventional WTP
facilities. For this renewal, the Total Copper database suggests no RP, therefore copper monitoring should
be discontinued. Manganese monitoring can also be removed, because there is no longer an action level
standard for this parameter. This would be the strategy for renewal of the individual permit. However, this
permittee is eligible to switch to the NCG59 general permit.
NCG59 GENERAL PERMIT ELIGIBILITY
- Permittee is passing all tox tests, therefore they are eligible
- Permittee does not have limits for any parameters, therefore they are eligible
- Permittee uses conventional treatment technology, therefore they are eligible
- Conclusion: Permittee is eligible for NCG59
SUMMARY OF PROPOSED PERMIT CHANGES
The following were suggested for this renewal: (PRIOR TO DECISION TO TRANFER TO
GENERAL PERMIT)
• The language in sections A.(2.) and A.(3.) have been updated to be consistent with the finalization
of requirements for electronic reporting and for toxicity monitoring.
• Manganese quarterly monitoring requirements were removed from this permit. There are no
longer action level standards for this parameters.
• A review of the past 4 % years of discharge monitoring data found no reasonable potential for
discharge of copper from this facility. The requirement of quarterly monitoring for copper has
been removed from this permit.
• A previous footnote citing the need to sample metals concurrent with WET testing has been removed —
this is no longer required.
• A previous footnote stating a minimum PQL of 10 ug/L for copper, zinc, and manganese was removed.
These constituents do not have the same PQL. Currently, copper has a PQL of 2 ug/1 and zinc has a PQL
of 10 ug/L.
TRANSFER TO NCG59
• ON 09/09/2020, permittee was informed via email that they qualified for the NCG59 General Permit,
and was given instruction on how to request transferal to general permit in writing
• ON 09/29/2020, permittee requested via email to be transferred to the NCG59
• ON 09/29/2020, Asheville regional office was informed of the permittee's request, and agreed with
decision to transfer permittee to NCG59 General Permit
• NEW PERMIT COC NUMBER: NCG5900034
Fact Sheet — Renewal Aug2020
NPDES NCO085511
Page 3 of 3

From:
DelDuco, Emilv
To:
Wigos, Linda
Subject:
FW: Mills River Regional WTP Qualifies for General Permit
Date:
Monday, September 21, 2020 10:20:00 AM
Attachments:
imaae001.ona
NCG590000-Issued -Genera l-Permit-2019-signed. pdf
From: DelDuco, Emily
Sent: Wednesday, September 9, 2020 4:19 PM
To: [e-mail]
Cc: [e-mail]; [e-mail]
Subject: Mills River Regional WTP Qualifies for General Permit
Hello Mr. Carreiro,
On August 1, 2019 the Division of Water Resources (DWR) issued General Permit NPDES
NCG590000 for wastewaters from Greensand and Conventional type water treatment
plants. This permit was developed to expedite the issuance and reissuance of these types
of permits.
The City of Asheville's existing Individual NPDES permit for its Mills River Regional Water
Treatment Plant (WTP) is up for renewal and qualifies for coverage under NCG590000.
The annual permit fee for the general permit is $100 verses $860 for an Individual permit,
and monitoring requirements are less frequent than those listed in NC0085511.
Similar to Individual NPDES permits, General Permits expire every five years but can be
renewed by completing a short and simple general permit renewal form. The General
Permit is reissued every five years and is sent to all the Permittees covered under it, all at
the same time.
To switch to the General permit, the City will need to make a written request to DWR.
Please note, the issuance of the General Permit would require the rescission of your
individual permit. The Division suggests that you review the attached file containing the
General Permit and decide whether you would like the Division to renew the individual
permit or proceed with issuance of a Certificate of Coverage for the WTP. Note that the
Mills River Regional WTP operates a conventional water treatment system that discharges
to freshwater, so the facility would be subject to the limitations listed on page 3 (B. (3.)
Conventional WTP Effluent Limitations and Monitoring Requirements— Discharging
to Freshwater) in the attached General permit.
To request that the Division proceed with issuing the General Permit instead of renewing
the existing Individual permit, the City should respond with the wording below, or equivalent
text:
The City of Asheville has reviewed the Division of Water Resources
General Permit NCG590000 for greensand and conventional type water
treatment plants and requests that the discharge from the Mills River
Regional WTP be covered under this new general permit. The City

understands that the Division will rescind the individual NPDES permit for
the Mills River Regional WTP — NCO085511 when the Certificate of
Coverage for the General Permit NCG590000 is issued to the City for the
WTP.
The written request shall be signed by an authorized City of Asheville official in accordance
with 15A NCAC 02H .0106(e).
If you have any questions concerning this matter, please contact me by email at this email
address.
Please let me know how you would like us to proceed within the next two weeks, preferably
by Sept 21, 2020. If we do not get a response by that date (or a request for more time for a
decision), the Division will proceed with the renewal of individual permit NCO085511.
Regards,
Emily DelDuco
Environmental Scientist II
Division of Water Resources
Department of Environmental Quality
919-707-9125
emily.delducoQncdenr.gov
Nothing Compares
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

From: Naas, Linda
To: DelDuco. Emilv
Subject: RE: [External] NCG590000 Request to move to General Permit NCO085511
Date: Tuesday, September 29, 2020 9:08:06 AM
Attachments: imaoe002.ono
Excellent. Keep me posted when 85511 goes inactive and NCG5900xxx goes into effect.
Thank you,
Q, E
L n
Environmental Senior SpecialistiDnision Water Resources
North Carolina Department of Environmental Quality
828-296-4500 (Office)
Linda. wiggs gncdenr.gov
ErrW cwagonlewe to aid from ft address is suiWt to the NAh car:Ang Rabic Hu -orris Law and
►nay be dsck d to third partite
From: DelDuco, Emily
Sent: Tuesday, September 29, 2020 9:00 AM
To: Wiggs, Linda <[e-mail]>
Subject: FW: [External] NCG590000 Request to move to General Permit NCO085511
Hi Linda,
NCO085511/Mill River Regional WTP requested coverage under the NCG59. I am working on getting a COC ready for them.
From: Leslie Carreiro [mailto:Icarreiro()ashevillenc.gov]
Sent: Tuesday, September 22, 2020 3:47 PM
To: DelDuco, Emily <Emily.Del DucoGilncdenr.gov>
Cc: Brendan Kelley <bkelley(@ashevillenc.gov>; Brenna Cook <bcook(a ashevillenc.eov>
Subject: [External] NCG590000 Request to move to General Permit NCO085511
Dear Emily,
Please excuse the lateness in my reply.
Thank you for informing us that the Mills River WTP - NC 0085511 meets the qualifications for moving to a general effluent permit.
The City of Asheville has reviewed the Division of Water Resources General Permit NCG590000 for greensand and conventional
type water treatment plants and requests that the discharge from the Mills River Regional WTP be covered under this
new general permit. The City understands that the Division will rescind the individual NPDES permit for the Mills River Regional
WTP — NCO085511 when the Certificate of Coverage for the Genera[ Permit NCG590000 is issued to the City for the WTP.
If we have missed the deadline for this request, please let us know.
Respectfully,
Leslie
Leslie Carreiro
Division Manager - Water Production / Water Quality
Water Resources
City of Asheville
828-271-6101
828-777-9461
I check my emails daily at 9:30 AM, 12:30 PM and 130 PM. If you have an urgent need, please call me.

From:
Thomas, Zachary T
To:
DelDuco, Emily
Cc:
Moore, Cindy
Subject:
RE: Permit for review NCG590034
Date:
Wednesday, December 9, 2020 1:59:12 PM
Attachments:
imaae002.ona
imaae003.pnna
Hi Emily,
Thanks! I came over from the RRO and I'm excited to be working with the ATB folks!
Everything looks good. It appears that they will be switching from quarterly to a once per calendar
year acute fathead test.
Only comments I have are:
• Would it be possible to add the electronic submittal email language somehow? I
know the general permit has all of the language for mailing, but maybe we could add
the ATForms.ATB(@ncdenr.gov to the Supplement to CoC portion?
• Also, the general permit has parameter codes for cerio and mysid, but not for the
fathead testing. Is it possible to add that information to the Supplement to CoC as
well? (TGE6C)
Thank you,
Zach Thomas
Environmental Specialist II
Aquatic Toxicology Branch
NCDEQ— Division of Water Resources
919-743-8439
Submit ATForms electronically to: ATForms.ATB6Dncdenr.gov
D- E�
1-.e
Email correspondence to and from this address is subject to the North Carolina Public Records Law
and may be disclosed to third parties.
From: DelDuco, Emily
Sent: Wednesday, December 9, 2020 11:46 AM
To: Thomas, Zachary T <[e-mail]>
Cc: Moore, Cindy <[e-mail]>
Subject: Permit for review NCG590034
Hi Zachary,

Welcome to DWR! Attached is a draft permit with tox testing for review. This permit was previously
NCO085511 but it is being switched over to the NCG59 General permit.
Emily DelDuco
Division of Water Resources
Department of Environmental Quality
919-707-9125
emily.delducoPncdenr.gov
Nothing Compares
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
MEMORANDUM
NORTH CAROLINA
Environmental Quality
November 19, 2020
To: Nicole Hairston
NC DEQ / DWR / Public Water Supply
Asheville Regional Office
From: Emily DelDuco
Compliance and Expedited Permitting Unit
Subject: Review of Draft NPDES Permit NCG590034
Mills River WTP
Henderson County
Please indicate below your agency's position or viewpoint on the draft permit and return this form by November
30, 2020. If you have any questions on the draft permit, please contact me at 919-707-3712 or via e-mail
[Emily. delduco @ncdenr. gov] .
RESPONSE: (Check one)
F] Concur with the issuance of this permit provided the facility is operated and maintained properly, the stated effluent
limits are met prior to discharge, and the discharge does not contravene the designated water quality standards.
F-1
Concurs with issuance of the above permit, provided the following conditions are met:
F-1
Opposes the issuance of the above permit, based on reasons stated below, or attached:
Signed Nicole Hairston Date: 11/20/20
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617
NORTH CAROLINA -
Oepartment of Environmental Quality 919.707.9000

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
City of Asheville
Attn: Brendan Kelly, Plant Supervisor
3374 N Fork - Left Fork Rd
Black Mountain, NC 28711-8752
Subject: Permit Renewal
Application No. NCO08SS11
Mills River Regional WTP
Henderson County
Dear Applicant:
NORTH CAROLINA
Environmental Quality
August 03, 2020
The Water Quality Permitting Section acknowledges the July 28, 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://deg.nc.gov/permits-regulations/permit-quidance/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.
SSi�inncerely
o5. 6�3�0
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application
North Caro' rs Deps rtrrert of Envrronmerita' Quairty I Divs+orr of Water Resources
D E Ashewie Regona Off oe 1 2090 U.S. 70 Highway I Swannanoa, North Carosna 28778
928-2 6-4500

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated v4rzth water treatment plans
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality I NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPD)ES Permit Number
If you Q1'E .completi1Z9
this
forrn in COT1'ipT.ItP.i i,LS2 the 7AB
key 4t' the up
— down arrows to move from one
field to the
next. To cheek
the waxes, click x,�. ox�r- rRause on
tad o�'the fox.
Othenuise, please prink a7- type.
Contact Information
Owner Name
G►�w off' A510wiley,ll
Facility lame MIIA-5•
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
4037 HaH�rood 'Road —"
Mills `P:ve�
NC %2`375�
cs2sJ Z32-45i'-E and Oo Ztv 2oSZ law* 4!Y 7o For 24/7
i )
b Ke I le;A 0 ashevti le n 6 0%/
2.. Location of facility producin
Check here if same as above
Street Address or State Road
City
State / Zip Code
County
g discharge;
3. Operator Information:
Xame oT the firm, consultant or other entity that operates the facility.. (Note fhai phi7 s s not referring to the
Operator in Resporisible Charge or ORC)
Name
Mailing Address
City
State / Zip Code
G;� o Askeville
�O 30X % i qt A��n'- Wader Pesovrce (),'rec+o,-r
Telephone Number (ilv 25,1
Fax Number ( )
4. Ownership Status:
Federal El Stake El
Private Ej
Public
L.o cxAl Croverninqvi -
Rage 1 of 3 Version5/2012

NPDES PERMIT APPLICATION" SHORT FORM C - WTP
For discharges associated with water treatment plants
�. 'hype f treatment plant:
Conventional (Includes coagulation, flocculation, and sedimentation usually followed by
filtration and disinfection)
[� Ion Exchange (Sodium Cycle Canonic ion exchange)
El Green Sand Filter (No sodium recharge)
❑ Membrane Technology (RO) nanvfiltration)
Check here if the treatment process also uses a water softener ❑
6. Description of source water(s) (i.e. groundwater, surface tuater) s�,�
!S\JC�&CC \A/aW � � Wa1 � �C
�ie ope(UVta 0)r CC)n�IWACPI � F M�
7. Describe the treatment process(es) for the craw water:
i S pv, r�r p6 Avwv% f lv er- io6rvvq� tXkr-!;Creer5 �'O of-* Sip s�omie & ism&[)
C4"j WOL�qer OZOnCAWS gft� CC)04)VJd4'%'0A
Oil b &A
Sof\V (.oew
8. Describe the wastewater and the treatment processes) for wastewater generated by the
facility. Navv%nvIo4, Sol(;%Ve (7-mrp\ oinJ P0i2r bacKio/m i.-% ,
as 6tA k kv:) 2 onsA-e 6ol 650on$ 7TOroC)o gal cc+pvc �) e'ac"k ,
$e 41t9 oaeom ids �ke lao)ao,%5 al1a +V%?, Clfor 5vperi)aV&d%k 'j, di3G"Ca A�-
Q Stu ce gaW5 ak bNt lo"K c�-1-he a I rvillep'r'r
+od 0PPc&W'rvwV 2044 downslrearv, exna t4or+h of- #-kt F�.�y,'B�aa'L.,1arYce
3. Number 4f separate discharge points,.1+Were a � ��''� �i�s �� po�n�-
Out I Identification number(s) 00 1
10. Frequency of discharge:
If intermittent:
Days per week discharge occurs:
Continuous -4
11. Plant design potable flowrate �i_5 MGD
Backwash or reject flow C) t 050,.mGD
Duration
Intermittent 1:1
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfalI, including
latitude and longitude): i rtno' 1;rt>o'� 9,\Ve,
L,ot V 1 S G'a 22'
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Alum J aluminum sulfate (:)
ides No
Page 2 of 3 Version 512012

NPDES PERMIT APPLICATION - SHORT VORM C - WTP
For discharges associated with water treatment pants
Iron sulfate I ferrous sulfate 'Yes (No
Fiuvri�c�e YE)
No
Ammonia nitrogen / Chloxarnines Yes Na
Zinc- ortho phosphate or sweetwater CPI236 "des No
List and other additives below:
Soc�;vm kAOIcklon� SOA:VWn
6cAl tan 11 1
14. Is this facility located on Indian country (check ort�
Yes No
15* Additional In#'orrnation.
> Provide a schematic of flow through the facility? include flow volumes at all paints in
the wafter treatrnent process. The plan should show the point[s] of addition for
chemicals and all discharges routed to an autfall [including storrnvgater].
> Solids Handling Plan
16- NEW Applicants
h7f-onnation needed in addition to items 1-1 S.-
> New applicants are highly encouraged to contact a permit coordinator with the
NGDENR Customer Service Center.
Was the Customer Service Center contacted? El Yes ❑ Na
> Analyses of source water collected
Engineering Alternative Analysis
> Discharges from Ion Exchange and reverse Osmosis plants shah be evaluated using a
wader quality mode.,
17. Applicant Certification
I certify that I arn familiar with the information contained in the application and that to the
best of mar knowledge and belief such, Information is trues complete, and accurate.
Ke I It
Printed name of Person Signing
ignature of A'ppli
PlCkllk !SO
Tithe
Date
rvisor
0 RL
North CarolinaGeneral Statute 14 - 1 , (bX2) provides #-rat+ Any person who knowingly makes any false :statement representation, or cerdficakn in any application,
po rt, pla n , or other docu m e n t fi les o r req u i to be maintained u nd er Aiticle 21 or reg Ulabons of the E nv1ron mental Management C 0 M m« ion 1mple m en Ung that
ri le, or who falsifies, tampers with, or knowingly renders inaccurate any recording or mon!Wng device or method required to be operated or maintalned under Artide 21
or regulations of the Environmental Managernent Commission ImplemenUng that Midet shiall be p14of a misdemeanor punish -able by a fine not to exceed $25,000, or b
imprisonment not to exceed six months, or by both; (18 UC, Section 1001 provides a punishment by a fine of not more than $2-5,000 or imprisonment not more than
yea r , or bath, for a s hi la r offense,)
Page 3 of 3 Version 5120I2

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Mills River Water Treatment Facility (MRWTF)
UC-�0
Quad / State Grid: Skyland I F8NE IFI06010105
Reegiving Stream; French Broad River Stream Segment: 6-(52.5)
DraipAg.e,Basin* French Broad Sub -Basin: 04-03-
tram Class. WS-IV,-, B 3CA
IOWA: Facifily:
Latitude: 3 511 23' 14.5" -N Latitude: 3 5 " 22 " 14,61"' N
L Dngitud . 820 3 V 5 6.473 W LoqgLtude: 82" 32'46W:W
Facility
Location
not to scale
North
NPDES Pemut NC0085511
Henderson County
--- - - -----
MKI

MILLS RIVER
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RENCH BROAD RIVER
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From: DelDuco, Emilv
To: Leslie Carreiro
Cc: Brendan Kellev; Bill Hart
Subject: RE: [External] Re: Electronic Delivery of Certificate of Coverage for Mills River Regional WTP
Date: Tuesday, January 26, 2021 11:24:00 AM
Attachments: NCG590034 CDC 2020 Final.odf
image001.pno
Good Morning,
Thank you for your reply. Please find attached the Certificate of Coverage for your facility.
Best,
Emily
From: Leslie Carreiro <[e-mail]>
Sent: Monday, January 25, 2021 3:19 PM
To: DelDuco, Emily <[e-mail]>
Cc: Brendan Kelley <[e-mail]>; Bill Hart <[e-mail]>
Subject: [External] Re: Electronic Delivery of Certificate of Coverage for Mills River Regional WTP
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Emily,
I agree to accept information, documents and forms via PDF attachments.
Sincerely,
Leslie Carreiro
Division Manager - Water Production / Water Quality
Water Resources
City of Asheville
828-271-6101
828-777-9461
I check my emails daily at 9:30 AM, 12:30 PM and 3:30 PM. If you have an urgent
need, please call me.
On Tue, Jan 19, 2021 at 3:35 PM DelDuco, Emily <Emily.DelDuco(@ncdenr.gov> wrote:
Greetings,
This is in regards to the NPDES wastewater general permit Certificate of Coverage for Mills River
Regional WTP /NCG590034. This facility was formerly permitted as NPDES permit NC0085511.
Transferal to coverage under the NCG590000 General Permit was requested on 9/22/2020.

In order to provide more convenience, control, and security to our permittees and assist them in
processing their transactions, The Division of Water Resources is currently transitioning towards
electronic correspondence. This will hopefully provide more efficient service to our permittees
and other partners and will allow us to more effectively process and track documents. We are
writing to ask you for your approval of the transmittal of documents related to your permitting and
related activities with the Division in an electronic format. Documents will be emailed to the
appropriate contact person(s) in your organization in a PDF format.
Please respond to me through email with verification that transmittal of your documents in
an electronic manner is acceptable to you. If you have any questions, please feel free to
contact me.
Thank you,
Emily DelDuco
Division of Water Resources
Department of Environmental Quality
919-707-9125
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