NC0085511_Complete File - Historical_20160314

N
Water Resources
ENVIRONMENTAL QUALITY
March 14, 2016
Brendan Kelley, WTP Supervisor
City of Asheville
4037 Haywood Road
Mills River, NC 28759
PAT MCCRORY
DONALD R. VAN DER VAART
S. JAY ZIMMERMAN
Subject: Issuance of NPDES Permit NCO085511
Mills River Water Treatment Facility
4037 Haywood Road, Mill River
Henderson County
Dear Mr. Kelley:
The Division of Water Resources (the Division) hereby issues the attached NPDES permit for
the subject facility. We issue this permit pursuant to the requirements of North Carolina General
Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S.
Environmental Protection Agency dated October 15, 2007, or as subsequently amended.
Renewal Changes. The Division understands that you have made no significant changes to your
water treatment plant (WTP) processes since last renewal. Therefore we have only updated your
permit, site map, and also for your convenience, added parameter codes to your effluent table
[see permit section A. (l.)]. Finally, please note your need to implement electronic DMR
reporting.
Implementing Electronic Discharge Monitoring Reports Whffis). Please be advised that the
Division has implemented an electronic Discharge Monitoring Report (eDMR) program, in
accord with requirements promulgated by the Environmental Protection Agency (EPA). We
include in this permit the details to implement the eDMR program [see Section A. (3.)].
Federal regulations require electronic submittal of all DMRs by December 21, 2016, and specify
that, if North Carolina does not receive such submittals, Permittees must then submit eDMRs
directly to EPA. For more information on eDMRs, registering for eDMR submittal, and
obtaining an eDMR user account, please visit DWR's webpage:
httv:Hportal.ncdenr.orp,/web/wq/admin/bog/ipu/edmr.
For information on EPA's proposed NPDES Electronic Reporting Rule, please visit EPA's
website:
http://www2.epa.gov/compliance/proposed-npdes-electronic-reporting-rule.
State of North Carolina I Environmental Quality I Water Resources
1611 Mail service Center I Raleigb, North Carolina 27699-1611
919 707 9000

ti
Reginald Widemon, WTP Supervisor
City of Asheville
March 14, 2016
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable, you have the right to an adjudicatory hearing, upon written request submitted
within thirty (30) days after receiving this letter. Your request must take the form of a written
petition conforming to Chapter 150B of the North Carolina General Statutes, and you must file it
with the office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina
27699-6714. Unless such a demand is made, this permit shall be final and binding.
This permit is not transferable except after notifying the Division of Water Resources. The
Division may require permit modification, or revocation and re -issuance. Please note that this
permit does not affect your legal obligation to obtain other permits required by the Division of
Water Resources, the Division of Land Resources, the Coastal Area Management Act, or other
federal or local governments.
If you have questions, or if we can further assist you, please contact Joe R. Corporon, L.G. at
[e-mail]] or call his direct line [phone].
pec ly,
S. Jay Zimmerman, P.G.
Enclosure: NPDES Permit NC0085511 (issuance final)
hc: Central Files
ARO/SWPS, Landon Davidson
NPDES Program Files
ec: ARO/SWPS, Landon Davidson
OCP, Maureen Kinney
ATB, Susan Meadows / Cindy Moore

NPDES Permit NCO085511
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
City of Asheville
is hereby authorized to discharge treated wastewater from a facility known as
Mills River Water Treatment Facility
4037 Haywood Road, Mills River
Henderson County
to receiving waters designated as French Broad River in the French Broad River Basin, in accordance
with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV
hereof.
The permit shall become effective April 1, 2016.
This permit and the authorization to discharge shall expire at midnight on November 30, 2020.
Signed this day, March 14, 2016.
y . y Zimmerman, P. G., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

NPDES Permit NCO085511
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer effective.
Therefore, the exclusive authority to operate and discharge from this facility arises under the permit
conditions, requirements, terms, and provisions described herein.
City of Asheville
is hereby authorized to:
1. continue to operate a conventional wastewater treatment system [coagulation, flocculation,
sedimentation, filtration] discharging 0.050 MGD treated filter backwash generated during the
production of potable water [7.5 MGD]; these treatment facilities consisting of;
➢ backwash flow recorders
➢ manual addition of dechlorination
➢ dual (2) each 750,000-gallon earthen settling lagoons with isolation valves,
this system potentially utilizing the additives:
• aluminum sulfate
• sodium hydroxide
• sodium hypochlorite
• hydrofluosilic acid
• zinc orthophosphate
• sodium thiosulfate
• calcium hydroxide (lime)
this system located at the Mills River Water Treatment Facility, 4037 Haywood Road, Mills River,
Henderson County, and
2. discharge from said treatment works via Outfall 001, at the location specified on the attached map,
into the French Broad River [stream index 6-(52.5)], a waterbody currently classified WS-IV, B, CA
within subbasin 04-03-02 [HUC: 06010105] of the French Broad River Basin.
Page 2 of 7

NPDES Permit NCO085511
PART I
A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[NCAC 0213.0400 et seq., 02B.0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge filter backwash via Outfall 001. Such discharges shall be limited, monitored and
reported by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS 2
[Parameter Codes]
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow, MGD
00500
Continuous
Recording
Effluent
Total Suspended Solids (TSS)
C0530
30.0 mg/L
45.0 mg/L
284onth
Grab
Effluent
pH
00400
Not < 6.0 or> 9.0 s.u.
2/Month
Grab
Effluent
Total Residual Chlorine (TRC) 3
50060
28 µg/L 3
284onth
Grab
Effluent
Turbidity, NTU 4
00076
2/Month
Grab
Effluent
Total Copper 5, µg/L
01042
Quarterly
Grab
Effluent
Total Manganese 5, µg/L
01055
Quarterly
Grab
Effluent
Total Zinc 5, µg/L
01092
Quarterly
Grab
Effluent
Total Aluminum, mg/L
01105
Quarterly
Grab
Effluent
Fluoride, mg/L
00951
Quarterly
Grab
Effluent
Total Nitrogen (TN), mg/L
TILT = (NOS N+NOa N)
C0600
Quarterly l
Qu
Grab
Effluent
Total Phosphorus (TP), mg/L
C0665
Quarterly
Grab
Effluent
Whole Effluent Toxicity (WET)
Acute 6
TGE6C
Quarterly
Grab
Effluent
Footnotes:
1. Beginning no later than December 21, 2016 from the effective date of this permit, the Permittee shall report
discharge monitoring data electronically using the NCDWR's Electronic Discharge Monitoring Report
(eDMR) internet application. [See Section A. (3.) for eDMR submittal requirements.]
2. Quarterly WET testing sample shall be collected concurrently with all other effluent samples:
3. The Division shall consider compliant allTRC effluent values reported below 50µg/L.,However, the
Permittee shall continue to record and submit all values reported by a North Carolina -certified test method
(including field certified), even if these values fall below 50µg/L.
4. Discharge from this facility shall not cause receiving -stream turbidity to exceed 50 NTU. If instream
background conditions exceed 50 NTU, this discharge shall not cause instream turbidity to increase.
5. Chemical analyses requires 10.0 µg/L minimum detection level (MDL).
6. WET testing, Acute 24-firs static, P/F, Fathead Minnow (Pimephales promelas) at 90%; February, May, August,
and November; refer to Section A. (2.).
Condition: The Permittee shall discharge no floating solids or foam.
Page 3 of 7

NPDES Permit NCO085511
A. (2.) ACUTE TOXICITY (QUARTERLY) - MONITOR ONLY
[15A NCAC 02B .0200 et seq.]
The Permittee shall conduct acute toxicity tests on a uarterl basis using protocols defined in the North Carolina
Procedure Document entitled "Pass/Fail Methodology for Determining Acute Toxicity in a Single Effluent
Concentration" (Revised -December 2010 or subsequent versions). The monitoring shall be performed as a
Fathead Minnow (Pimephales promelas) 24 hour static test. The effluent concentration at which there may be at
no time significant acute mortality is 90% (defined as treatment two in the procedure document). The tests will
be performed during the months of February, May, August, and November. These months signify the first
month of each three month toxicity testing quarter assigned to the facility. Effluent sampling for this testing
must be obtained during representative effluent discharge and shall be performed at the NPDES permitted final
effluent discharge below all treatment processes.
The parameter code for Pimephales promelas is TGE6C. All toxicity testing results required as part of this
permit condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it was
performed, using the appropriate parameter code. Additionally, DWR Form AT-2 (original) is to be sent to the
following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, North Carolina 27699-1623
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 3 0 days after
the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed
in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent
toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during any month, the Permittee will complete the
information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit number,
pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the
form. The report shall be submitted to the Water Sciences Section at the address cited above.
Should the Permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately. Upon submission of a valid test, this monthly test requirement will revert to
quarterly in the months specified above
Should any test data from either these monitoring requirements or tests performed by the North Carolina Division
of Water Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified
to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
follow-up testing to be completed no later than the last day of the month following the month of the initial
monitoring.
Page 4 of 7

NPDES Permit NCO085511
A. (3.) ELECTRONIC REPORTING - DISCHARGE MONITORING REPORTS
[G. S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports and specify that, if a state does not establish a system to receive such submittals, then permittees
must submit monitoring data and reports electronically to the Environmental Protection Agency (EPA).
The final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part H of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements [Supersedes Section D (2) and Section E. (5) (a)]
Effective December 21, 2016, the permittee shall report discharge monitoring data electronically
using the NCDWR's Electronic Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NCDEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1. 1, 2, 3) or
alternative forms approved by the Director. Duplicate signed copies shall be submitted to the
mailing address above. See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Page 5 of 7

NPDES Permit NCO085511
Starting on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Divisions (see "How to Request a
Waiver from Electronic Reporting" section -below).
2. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to
the Division. Requests for temporary electronic reporting waivers must be submitted in writing to
the Division for written approval at least sixty (60) days prior to the date the facility would be
required under this permit to begin submitting monitoring data and reports. The duration of a
temporary waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring data
and reports shall be submitted electronically to the Division unless the permittee re -applies for and is
granted a new temporary electronic reporting waiver by the Division. Approved electronic reporting
waivers are not transferrable. Only permittees with an approved reporting waiver request may
submit monitoring data and reports on paper to the Division for the period that the approved
reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http://deq..nc.gov/about/divisions/Water-resources/edmr
3. Signatory Requirements [Supplements Section B (11) M and Supersedes Section B (11) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part 11,
Section B. (I 1.)(a) or by a duly authorized representative of that person as described in Part H,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
bttp://deq..nc.gov/about/divisions/water-resources/ednir
Page 6 of 7

NPDES Permit NCO085511
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the information,
the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations. "
4. Records Retention [Supplements Section D. (6.)]
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period
may be extended by request of the Director at any time [40 CFR 122.41 ].
Page 7 of 7

ROAD • •
U 23
Butler Bridge 0 . 134 11
�01 n -j �� •• 'f
'- French Broad
River (flows N)
a er �� ,• I! I
o NP 1�
o s ems
Jeffress Rd.
Outfall 001
I / 1 0
+ Me �
R o.
Discharge Line n L
(flows NE) ; ' \ j •,3 0 �
MRWTF
,t �• ❑ J Haywood Rd.
°
°
(NC HWY 191) �` \ • °
City of Asheville Facility
Mills River Water Treatment Facility (MRWTF)
r
Quad /State Grid: Skyland / F8NE HLocationUC: 06010105 -
Receiving Stream: French Broad River Stream Segment: 6-(52.5) not to, scale
Drainage Basin: French Broad Sub -Basin: 04-03-02
Stream Class: WS-IV; B; CA
Outfall: Facili
Latitude: 35° 23' 14.5"N Latitude: 35° 22' 14.6"N North
TOy,t Jn NPDES Permit NCO085511
Longitude: 82° 31' 56.4" W Longitude: 82° 32' 46.4" W 1 V r6 Henderson County

Notice of
[phone] 1 [phone] FAX
14 O. HENRYAVE. I P.O. BOX 2090 1 ASHEVILLE, NC 28802 1 [phone]
¢y GAmur
ASHEVR,LE
aTIZEN-TB11:.S
VOICE OF THE MOUNTAINS • CITIZEN TIMFS.com
AFFIDAVIT OF PUBLICATION
BUNCOMBE COUNTY
SS.
NORTH CAROLINA
Before the undersigned, a Notary Public of said County and
State, duly commissioned, qualified and authorized by law
to administer oaths, personally appeared Kelly Loveland,
who, being first duly sworn, deposes and says: that she is
the Staff Accountant of The Asheville Citizen -Times,
engaged in publication of a newspaper known as The
Asheville Citizen -Times, published, issued, and entered as
first class mail in the City of Asheville, in said County and
State; that she is authorized to.make this affidavit and
sworn statement; that the notice or other legal
advertisement, a true copy of which is attached hereto, was
published in The Asheville Citizen -Times on the
following date: January 28th 2016. And that the said
newspaper in which said notice, paper, document or legal
advertisement was published was, at the time of each and
every publication, a newspaper meeting all of the
requirements and qualifications of Section 1-597 of the
General Statues of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the
General Statutes of North Carolina.
Sigiie t 22"d day of February, 2016
(Signature of person makinA affidavit)
Sworn to and sub_ scr bed before me the 22"d day of
My Comrbission expires the 5" day of October, 2018.
WIF
f NOTARY
s, PUBLIC �.4

DENR/DWR
FACT SHEET -- NPDES PERMIT RENEWAL
NPDES PERMIT NCO085511
Facility Information . _dh
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 County
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:
06010105
*Summer 7Q10 (efs)
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:
Joe R. Corporon
IWC (%).
<0.1%
Date: -
07Jan2016
* 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-scallant), 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 Jan2016
NPDES NCO085511
Page 1 of 2

COMPLINACE HISTORY
The facility's compliance history is excellent; no NOVs. BIMS shows two TRC limit exceedences but at
levels below the state compliance [50 µg/L]. The record also lists a single monitoring -frequency violation
for turbidity (Oct2015).
PERMITTING STRATEGY
For renewal, the Division referenced the Water Treatment Plant Guidance (2009) for conventional WTP
facilities. Because there was no Total Iron database for last renewal, iron monitoring could not be
evaluated. For this renewal the Total Iron database suggests no RP [max predicted 0.5 mg/L], therefore
iron monitoring was discontinued [See DMR Summary below] — no other changes recommended. The
Division confirmed that the Permittee requires Acute WET testing based on IWC < 0.25 % - no change to
the permit.
Summary of DMR Database [Jan20l2-Dec2Ol5]
DMR
Turb.
(ntu)
TSS
(mg/L)
TRC
µg/L)
Total Cu
(µg/L)
Total Fe
(mgiL)
Total Mn
(µglL)
Total Zn
(µg/L)
Total Al
(µg/L)
Fluoride
(mg/L)
Max
4.44
20.4
32
5
0.3
62
87
2.6
0.44
Min
0.03
2.5
< 20
0.002
0.032
1.2
0.1
0.29
0.001
Ave
1 0.82
1 2.8
20.2
1 1.2
1 0.1
1 20
1 30
0.54
< 0.1
n
1 170
1 199
200
1 16
1 16
1 16
1 16
16
15
SUMMARY OF PROPOSED CHANGES
The following will be incorporated for this renewal:
deleted monitoring for Total Iron
updated Supplement to Cover Sheet
added parameters codes the effluent page
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice:
Permit Scheduled to Issue:
NPDES DIVISION CONTACT
January 13, 2016
February 26, 2016
If you have questions regarding any of the above information or on the attached permit, please
contact Joe R. Corm atJ919) 807-6394 or email [e-mail].
y
DATE:
Fact Sheet — Renewal Jan2016
NPDES NCO085511
Page 2 of 2

Table 1
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q1Os (cfs)
7Q1 Ow (cfs)
30Q2 (cfs)
QA (cfs)
1Q1Os (cfs)
Data Source(s)
(CHECK TO APPLY MODEL
Dject Information
❑CHECK IF HQW OR ORW
Mills River Water Treatment Facility
WTP
NCO085511
001
0 050
French Broad River
WS-IV'B; CA
316
390
578
1388
255.87
1 Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
2014 Generic RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 2. Parameters of Concern
Par01
Par02
Par03
P a r04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name Type Chronic Modifier Acute PQL Units z
Ll
El
El
Total Iron
NC
1
FW
mg/L
❑
Total Manganese
NC
200
WS
mg/L
❑
El
El
El
El
El
85511 Mills River WTP RPA-1jan2016_311.xlsx, input
1/11/2016

Mills River Water Treatment Facility REASONABLE POTENTIAL ANALYSIS
NCO085611
2014 Generic RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
Qw (MGD) = 0.05
WWTP/WTP Class: WTP
1Q10S(cfs)= 255.87
IWC @ 1QI0S = 0.030280%
7Q10S (cfs) = 316.00
IWC @ 7QI OS = 0.024519%
7Q10W (cfs) = 390.00
IWC @ 7Q10W = 0.019868%
30Q2 (cfs) = 578.00
IWC @ 30Q2 = 0.013407%
Avg. Stream Flow, QA (cfs) = 1388.00
fWC @ QA = 0.005583%
Receiving Stream: French Broad River Stream Class: WS-IV;B; CA
Outfall 001
Qw = 0.05 MGD
PARAMETER
STANDARDS & CRITERIA (2)
U)
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
(1)
J
a
z
Z)
NC WQS / Applied /s FAV /
Max Pred
n # Det. Allowable Cw
Chronic Standard Acute
Cw
Acute: NO WQS
Total Iron
NC
1 FW(7Q10s)
mg/L
16 14 0.5
Chronic:---- 4,078 --
--------------------------
No value > Allowable Cw
Acute: NO WQS
Total Manganese
NC
200 WS(7Q10s)
mg/L
16 13
109
_ _
— — — — — — — — — — — — —
Chronic: 815,684
No value > Allowable C\�
85511 Mills River WTP RPA-1jan2016_311.xlsx, rpa
Page 1 of 1 1/11/2016

(n (n Cn Cn (n Cn Cn 0 Cn A A A A A A A A A A W W W W W W W W W W N N N N N N N N N N
OU V 0 Cn A W N� O t0 N V Q1 (.n A W N� O (0 DD V m (T A W NO (O 0 V 0 Cn A W Nco OJ V 0 (n A W N -�
v
ID
n n v
d
w
p O 0 O 0 C 0 0 0 0 0 0
0 0' 0' f0 W N V N N 0 0 OOD C)
W --i
v O
r E+
O o 0 0 0 0 0 o C
b.C)a O O O N 'O
O O O
� 0 OOi En W N V N 0 T 0 00 T r 7
' CD<
a
-n �� vc
vatCD
ago
n u
f
0
O CD
N T
A
O O p
W
N
Cn W O
0 V O V
v
33
m co
oc-6
o
u < 2
01 0 0 0 0 CA 0 U 0 A A A A A A A A A A W W W W W W W W j W N N N N N N N N N N 0 CJi 8�� ;• A W N � i+ -+ 8
0 J 0 N A W N O 0 W V 0 0 A W N O 0 0 V 0 01 A W N O c0 OD V 0 Cn A W N O 0 0 V [0 0 V 0 0 A W N
AL
n n n w
o
co W N N -+ 0 p A
W 0 f0 0 0 0 0 0 W N A 00 0 N N
0
ID
v
o
0
O N
W --W N N 0 V A 0 O
W 0 UJ 0 0 0 O O W N A 0 N t0 N 0 ro-
c �nmam
x ,P' v c
T
� o
nCD
F n
O 0 V
tO0 N '0-+ 0 0OI 000
O CD V <0
3
N
3
y
7
<D
fA
tD
N
m
En
O
Z
D
03
r
mm
V
O
1
m
Z
D
r
D
Z
r
A"

City
4 of
i
Mills River Water r
Treatment
May 22, 2015
Wren Thedford
NC DENR / DWR / NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Mr. Thedford,
MAY 2 6 2015
Water Quality
Permitting Section
Please renew NPDES permit # NCO085511 for the Mills River Water Treatment Facility. There
are no expected changes in the nature and volume of the waste to be treated. Attached are the
completed application forms and our sludge management plan.
Sinc ely�
4-4-1-j
Reginald Widemon
Mills River Water Treatment Plant Supervisor

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants RECEIVED/DENR/DWR
Mail the complete application to:
N. C. Department of Environment and Natural Resources Mqy 2 6 2015
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617 Water Quality
Permitting Section
NPDES Permit Number INCO085511
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
Facility Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
City of Asheville N.C.
Mills River Water Treatment Faciliy
4037 Haywood Road
Mills River
N.C. / 28759
(828-232-4574)
(828-232-4590)
RWidemon@ashevillenc. gov
2. Location of facility producing discharge:
Check here if same as above
Street Address or State Road
City
State / Zip Code
County
Henderson
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
fi
Operator in Responsible Charge or ORC)
Name
Mailing Address
City
State / Zip Code
Telephone Number ( )
Fax Number ( )
4. Ownership Status:
Federal ❑ State ❑
5. Type of treatment plant:
Private ❑ Public
Page 1 of 4
C-WTP 03/05

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
® Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by
filtration and disinfection)
❑ Ion Exchange (Sodium Cycle Cationic ion exchange)
❑ Green Sand Filter (No sodium recharge)
❑ Membrane Technology (RO, nanofiltration)
Check here if the treatment process also uses a water softener ❑
6. Description of source water(s) (i.e. groundwater, surface water)
Surface water
7. Describe the treatment process(es) for the raw water:
Water is drawn from the Mills River and pumped to an untreated water storage reservoir
where suspended materials are settled out. The settled water is pumped to the pre-
ozonation system to begin disinfection where ozone gas is used to eliminate pathogens
and other bacterial contamination. The water then flows to the rapid mix and flocculation
basins where aluminum sulfate and sodium hydroxide are added to produce suspended
particles. Sedimentation follows where suspended particles settle to the bottom of the
sedimentation basin. The water then proceeds to another ozonation chamber for further
disinfection as well as taste, color, and odor control. Next, the water flows through filters
containing granular activated carbon where the media traps suspended solids and adsorbs
other organic material in the water. Following filtration, a small amount of sodium
hypochlorite is added for disinfection and to prevent the reintroduction of pathogens into
the drinking water. Enough is added to maintain a minimum residual concentration
throughout the distribution system. Fluoride is added to prevent tooth decay, sodium
bicarbonate and zinc orthophosphate are added for corrosion control and sodium
hydroxide to control pH. The inclusion of sodium bicarbonate also increases the buffering
capacity of water thereby helping to prevent pH swings in the distribution system.
S. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
The wastewater is process water primarily from filter backwashes and periodic sludge
discharges from the sedimentation basins. This wastewater flows to a lagoon where the
suspended solids are allowed to settle and the supernate flows to the river. Each year, a
predetermined amount of sludge solids and liquid is contracted for removal from the
lagoon and the solid/liquid waste is delivered to the local sewerage treatment facility.
9. Number of separate discharge points: 1
Outfall Identification number(s) 001
10. Frequency of discharge: Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: Duration:
11. Plant design potable flowrate 7.5 MGD
Backwash or reject flow 0.05 MGD
Page 2 of 4 C-WTP 03/05

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
French Broad River
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Aluminum sulfate, sodium hydroxide
Sodium hypochlorite, sodium bicarbonate
Hydrofluosilic acid
Zinc orthophosphate
Sodium thiosulfate, lime (calcium hydroxide)
14. Is this facility located on Indian country? (check one)
Yes ❑ No
15. Additional Information:
➢ Provide a schematic of flow through the facility, include now volumes at all points in
the treatment process, and point of addition of chemicals.
➢ Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-15:
➢ New applicants must contact a permit coordinator with the NCDENR Customer
Service Center.
Was the Customer Service Center contacted? ® Yes ❑ No
➢ Analyses of source water collected
➢ Engineering Alternative Analysis
➢ Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a
water quality model.
17. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge a d belief such information is true, complete, and accurate.
Water Plant Supervisor
Prin name of Person Signing Title
C-WTP 03/05
Page 3 of 4

M
OVERVIEW OF THE MILLS RIVER WATER TREATMENT PLANT
Aluminum Sodium
Sulfate Hydroxide
/ A I..—\ frl—.._a:_�
i
i
i Lagoons
i w
1
i To French Broad River
em___ ___ ____y;

City of Ashevflle, NC
9
�pMills River Water Treatment Facility
SLUDGE MANAGEMENT PLAN
The facility's waste water is primarily generated during the filter backwash process. Treated/filtered
water is used to back flush the filters. The contaminants that are removed plus the water used for
backwashing, drains to one of two lagoons located on the premises. Once in the lagoon, the suspended
solids are allowed to settle to the bottom and the supernatant flows to the French Broad River. In
addition to backwashes, the contamination flushed out during wash ups and spill clean ups, filter
excursions that initiate the filter to waste sequence, leaks and the daily discharge of sludge that
accumulates in the sedimentation basins also contribute to sludge/waste generation. Once a year a
commercial firm is contracted to dredge, dewater and remove the sludge from the lagoon. The
liquid/solid waste that is removed is delivered to the local sewerage treatment plant for
processing/disposal.
Reginald Widemon
Mills River Water Treatment Plant Supervisor

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
May 10, 2011
Mr. Fred Edwards
City of Asheville
4037 Haywood Road
Mills River, NC 28759
Subject: Issuance NPDES Permit
Permit NCO085511
Mills River WTP
Facility Class I
Henderson County
Dear Mr. Edwards:
Dee Freeman
Secretary
The Division has approved your application for renewal of the subject permit. Accordingly, we are
forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements of North
Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S.
Environmental Protection Agency dated October 15, 2007 (or as subsequently amended).
Division personnel have reviewed your comments on the draft and cannot remove the monitoring
requirements you requested at this time. The requirements in your permit meet the Water Treatment Plant
Strategy we are required to implement statewide.
Summary of Changes in Renewal Permit from ExistingPermit
ermit
1) Effluent settleable solids monitoring and instream turbidity have been removed.
2) Effluent aluminum and total iron monitoring have been reduced to quarterly.
3) Effluent total copper, fluoride, manganese, total zinc quarterly monitoring have been added.
4) Effluent pH 2/month monitoring with a range limit from 6.0 S. U to 9.0 S. U has been added.
5) Effluent turbidity 2/month monitoring has been added.
6) Effluent acute toxicity quarterly monitoring has been added.
7) Special Condition A. (2) Acute Toxicity Monitoring narrative has been added.
8) Effluent flow narrative has been amended. Effluent total chlorine residual footnote narrative has been
replaced.
9) Effluent total copper, manganese, and total zinc footnote narrative has been added.
Page 1 of 2
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
None
rthCarolina
'Naturalli

If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days
following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter
150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail
Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final
and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Quality or permits
required by the Division of Land Resources, the Coastal Area Management Act or any other federal or local
governmental permits that may be required.
If you have any questions concerning this permit, please contact Ron Berry at telephone number (919)
807-6396 or at email [e-mail].
Sincerely,
iY,
/ Coleen H. ullins
Attachments
Cc: Asheville Regional Office/Surface Water Protection Section
Environmental Sciences Section/Aquatic Toxicology Unit/Susan Meadows (email)
Central Files
NPDES Unit
Page 2 of 2

Permit NC0085511
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
City of Asheville
is hereby authorized to discharge wastewater from a facility located at the
Mills River WTP
NC Highway 191, northwest of Hendersonville
Henderson County
to receiving waters designated as the French Broad River in the French Broad River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts
I, II, III, and IV hereof.
The permit shall become effective June 1 001.
This permit and the authorization to discharge shall expire at midnight on November 30, 2015.
Signed this day May 10, 2011.
een H. SulliiJs Dfrdttor
ivision of Water Quality
By Authority of the Environmental Management Commission

Permit NC0085511
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the
permit conditions, requirements, terms, and provisions included herein
City of Asheville
is hereby authorized to:
1. Continue to operate a conventional 7.5 MGD capacity WTP discharging treated backwash
wastewater, and consisting of:
❑ Backwash flow recorders
❑ Manual dechlorination addition
❑ Two (2) 750,000 gallon earthen settling lagoons with isolation valves.
This facility is located at the Mills River WTP on NC Highway 191 northwest of Hendersonville in
Henderson County.
2. Discharge from said facility at the location specified on the attached map into the French Broad
River, classified WS-IV, B, CA waters in the French Broad River Basin.

N,
t
NCOC85511
Discharge ,�.t,` 1�: :
, t A 1 Ok
i .fir .i ,f r � � ., •� +� �` ,
jj1 • 1 _. �• •E �• I _ 1.
` � Cam.` �, (Y.'),'(rN I•A\P T]` �•'• •,. `' �•, •• •., w.. .d•�'
Mils River
NCO085511fV
Mile
'�. � � ; F•i •r: F. EF..,r! C+ -.v ' � • <w°�` �Z • �iA[1R#/AP�
�. .; . ! r. '�.•�� -1 • t _'.Mac
• �,� \ Co,�.�t�,�t�tiC;�fGC�1, t'aa>�Ytefh. Inc yt�B�i91i'� <� ; � 1
USGS Quad: FBNE Skyland, NC
Outfall Facility
Latitude: 35' 23' 14.5" N 350 22' 43.6" N \�
Longitude: 82° 31' 56.4" W 82' 32' 46.4" W
Stream Class: WS-IV, B, CA North Facility Location
Subbasin: 04-03-02 HUC: 06010105 Mills River WTP NC0085511
Receiving Stream: French Broad River Henderson County

Permit NCO085511
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee
is authorized to discharge treated backwash wastewater from outfall 001. Such discharges shall be
limited and monitored by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING
REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow, MGD
Continuous
Recording
Effluent
Total Suspended Solids (TSS)
30.0 mg/1
45.0 m /l
2/Month
Grab
Effluent
pH
Not more than 9.0 S.U.
nor less than 6.0 S.U.
2/Month
Grab
Effluent
Total Residual Chlorine (TRC)
28 1
2/Month
Grab
Effluent
Turbidity, NTU
2/Month
Grab
Effluent
Aluminum, mg/1
Quarterly
Grab
Effluent
Total Copper 1
Quarterly
Grab
Effluent
Fluoride, mg/1
Quarterly
Grab
Effluent
Total Iron, mg/1
Quarterly
Grab
Effluent
Manganese2, 4g/l
Quarterly
Grab
Effluent
Total Zinc 2, pg/I
Quarterly
Grab
Effluent
Total Nitrogen (TN), mg/I
TN = (NO2-N + NO3-N) = TKN
Quarterly
Grab
Effluent
Total Phosphorus (TP), mg/1
Quarterly
Grab
Effluent
Acute Toxicity
Quarterly
Grab
Effluent
f
Footnotes: K)�
1. Total Residual Chlorine compliance is required for chlorine or chlorine derivative used for
disinfection. The Division shall consider all effluent TRC values reported below 50 ug/I to be in
compliance with the permit. However, the Permittee shall continue to record and submit all values
reported by a North Carolina certified,labo-r-at70 (includi g field ce Tied), yen if these values fall
below 50 ug/l. 11 -
�
2. A minimum detection level of 10.0 µg/1 is required: \ p " qk�-
3. Acute 24 hrs static, P/F, Fathead Minnow (Pimephales promelas) at 90%; February, May, August,
and November; refer to Special Condition A.(2). All effluent characteristic samples shall be collect
and rne4W the toxicity sample. ---
wiC �ickxpq\e'vV y Wt
All samples collected must be of a representative discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

J�Permit NCO085511
A. (2) ACUTE TOXICITY MONITORING (QUARTERLY)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North
Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A
Single Effluent Concentration" (Revised -July, 1992 or subsequent versions). The monitoring shall be
performed as a Fathead Minnow (Pimephales promelas) 24 hour static test. The effluent concentration at
which there may be at no time significant acute mortality is 90% (defined as treatment two in the
procedure document). Effluent samples for self -monitoring purposes must be obtained during
representative effluent discharge below all waste treatment. The tests will be performed during the
months of February, May, August, and November.
The parameter code for Pimephales promelas is TGE6C. All toxicity testing results required as part of
this permit condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it
was performed, using the appropriate parameter code. Additionally, DWQ Form AT-2 (original) is to be
sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Sectio
1621 Mail Service Center
Raleigh, N.C. 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later
than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine
of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of
the waste stream.
Should there be no discharge of flow from the facility during any month, the permittee will complete the
information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit
number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the
comment area of the form. The report shall be submitted to the Environmental Sciences Section at the
address cited above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation and reporting of the data submitted on the DMR and AT
Forms.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival and appropriate environmental controls, shall constitute an invalid test and will
require immediate follow-up testing to be completed no later than the last day of the month following the
month of the initial monitoring.

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Environmental Health
Beverly Eaves Perdue Terry L. Pierce
Governor Director
March 11, 2011
MEMORANDUM
To: Ron Berry — Through James McRight
NPDES Unit
From: Jim Adams, PE
Regional Engineer
NCDENR. PWS
Asheville Regional Office
Subject: Review of NPDES Permit NCO085511
Mills River WTP
Henderson County
Response:
Dee Freeman
Secretary
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.
❑ Concur with issuance of the above permit, provided the following conditions are met:
❑ Opposes the issuance of the above permit, based on reasons stated below, or attached:
' _...�..�ZWE
Public Wat Sup Section — Jessica Godreau, Chief
Asheville ReWal Office
2090 U.S. Highway 70, Swannanoa, North Carollna 28778
Phone: [phone] FAX: [phone] Intemet: ncdrinl ingwater.state.nc.us
An Equal Opportunity lAtfinnativeAction Employer
Date: s/ k
One
NorthCarolina
Natura!!,ll

NCDENR/DWQ/NPDES
32002513
Public Notice - Notice of Intent to issue a NPDES
Wastewater Permit
$145.31
CERTIFICATION OF PUBLICATION
March 7, 2011
I, Jan Sullivan, affirming the following under the penalties of
perjury state:
I am employed by Times -News, a subsidiary of the New York
Times Company. Times -News, a daily newspaper of general
circulation printed and published in the city of Hendersonville,
county of Henderson, and state of North Carolina. I hereby
certify that the advertisement annexed hereto was published in
the editions of The Times -News on the following date or dates:
03/05/11
And that the said newspaper in which such notice, paper,
document, or legal advertisement was published was, at the time
of each and every publication, a newspaper meeting all of the
requirements and qualifications of Section 1-597 of the General
Statutes of North Carolina and was a qualified newspaper within
the meaning of Section 1-597 of the General Statutes of North
Carolina.
This 5th day of March, 2011.
(Signed)
Sworn to and'subscribed before me, this 5th day of
March,, 20��1��1. ((��
C�((U�a-i'1 l� (QLA� Notary Public
Deborah H. Owen
Times -News
I
\\\\\\o�PH iHi�0 '/h'
Notary Public
Henderson County = 106 Henderson Crossing Plaza • Hendersonville, N
'My commission 0 OXplres`
P. O. Box 490 • Hendersonville, NC 28791-
828/692-0505 • FAX [phone] * 828/693
O/PTHIICP"R `www.blueridgenow.com
1
441 L(. 5 k u-) *9 /J 6 5 5- 51
A PART OF
The NewYbrkTimes
Company
PUBLIC NOTICE
NmnTLafoIina
Environmental
Management
Commission/
NPDES Unit
1617 Mail Service
Center
Raleigh, NC
27699-1617
Notice of Intent to
Issue a NPDES
Wastewater Permit
The North Carolina...
Environmental
agement Commi""
proposes to issue &.
NPDES wastewater dis-
charge permit to the
person(s) listed below.
Written comments re-
garding the proposed
permit will be accepted
until 30 days after the
publish date of this no-
tice. The Director of the
NC Division of Water
Quality (DWQ) may hold
a public hearing sWuld
there be a significant
degree of public inter-
est. Please mail com-
ments and/or informa-
tion requests to DWQ at
the above address. In-
terested persons may
visit the DWO at 512 N.
Salisbury Street, Ra-
leigh, NC to review in-
formation on file. Addi-
tional information on
NPDES permits and this
notice may be found on
our website:
http://portal. denr.org/
web/wq/sw p/ps/n pd es/
calendar, or by calling
[phone].
City of Asheville re-
quested renewal of
permit NCO085511 for
the Mills River WTP
in Henderson County:
this permitted discharge
is treated filter -
backwash wastewater
to the French Broad
River, French Broad
River Basin.
(3/5)
N000063301

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0085511
Facility Information
Applicant/Facility
Name:
Mills River WTP
Applicant Address:
City of Asheville; 4037 Haywood Road; Mills River, NC 28759
Facility Address:
City of Asheville; 4037 Haywood Road; Mills River, NC 28759
Permitted Flow
n/a (est intermittent 0.05 MGD)
Type of Waste:
treated backwash from conventional multimedia
filters
Facility/Permit Status:
Class I/Active; Renewal C L A s S -T
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 mi ):
n/a
HUC:
06010105
*Summer 7Q 10 (cfs)
316
303 d Listed?
No
*Winter 7Q10 (cfs):
390
Regional Office:
Asheville
*30Q2 (cfs)
578
State Grid / USGS
Quad:
FBNE
Skyland, NC
*Average Flow (cfs):
1388
Permit Writer:
Ron Berry
IWC.(%):
i 0.1%
Date:
* Used stream flow data from NC0000094 (downstream from this discharge4/includes two creeks
confluences)��,gj3
BACKGROUND 3 /P
The City of Asheville operates a 7.5 MGD conventional water drinking water facility that serves
the Asheville community, and uses the river as its water source. The Mills River WTP facility
discharges intermittent treated conventional chlorinated backwash water to the French Broad
River, a class WS-IV, B, CA water in the French Broad River Basin.
The Authorization to Construct approval for the settling lagoons was issued in 1996. Initially, the
stream segment classification had been WS-IV but was re -classed as C. The classification was
then changed to B as reflected in the current permit. The correct full designated classification for
this segment of the French Broad River is WS-IV, B, CA. In 2006, the ownership was transferred
from the regional authority to the City of Asheville.
The conventional treatment process consist of mixing, flocculation, settlement followed by
filtration through three multimedia gravity filters. Alum and other additives are added prior to
mixing. The filters are required to be backwash a minimum of once every 96 hours, or more
often if needed based on filter head pressure. Flow meter/recorders monitor the backwash events
and provide the data for the DMR. The finished drinking water is used to backwash the filters.
The finished drinking water has been treated with chlorine derivatives (disinfectant), zinc
orthophosphate (antiscallant), and fluoride. Ammonia is not used.
Fact Sheet
NPDES NC0085511
Page 1 of 3

Upon the initiation of each backwash the operator doses the filter backwash discharge water with
the appropriate amount of dechlorination chemical. The discharge is diverted to one of two
750,000 gallon settling lagoons where the decanted wastewater 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 into an approved manhole of The Metropolitan Sewer
District.
The Permittee petitioned the Division as part of this renewal to consider removal of iron
monitoring.
HISTORY
The facility has an excellent compliance history and no issues.
PERMITTING STRATEGY
The Division's Water Treatment Plant Strategy for conventional facility was applied:
- Settleable solids monitoring was removed. Not required.
- Effluent monitoring for Turbidity 2/month was added. No limit required since the receiving
stream is not impaired for turbidity. Remove instream turbidity monitoring, not required.
- Effluent monitoring for Total Copper, Fluoride, Manganese, Total Zinc, Total Phosphorus,
and Total Nitrogen monitoring was added. Wastewater contains zinc -based antiscalant and
fluoride. Nutrient monitoring required for discharge = > 50,000 gpd. For further clarity, a
minimum detection of 10.0 µg/1 will be required for Total Copper, Manganese, and Total
Zinc analysis.
- Effluent monitoring for Acute Toxicity Test, freshwater, 90% concentration, was added. The
IWC is < 0.25% and dictates Acute Toxicity applies. Toxicity samples to be collected at
same time as all other effluent monitored parameters samples.
- Existing effluent Aluminum and Total Iron monitoring were reduced to quarterly.
- A pH 2/month monitoring with a limit range of 6.0 S.U. to 9.0 S.U. was added.
- Existing effluent TRC footnote narrative was updated to define compliance conditions and
measurement protocol.
Since it was necessary to apply the strategy iron could not be removed. But the removal will be
considered as part of the next renewal. All monitored requirements must be conducted at the
same time as the sampling for the Acute Toxicity Test. The IWC calculation was re -calculated
based on best estimated stream data and confirmed the TRC limit was correct, and used to
determine which toxicity test to apply.
As required, a copy of the draft permit with an approval form will be sent to the Mooresville
DEH Engineer for review. The signed returned approval form return will document DEH
approval and/or position.
Data Review
DMR data from November 2008 to November 2010 was reviewed for the current permit limited
parameters, see Table I:
Fact Sheet
NPDES NC0085511
Page 2 of 3

Table 1: DMR Date Review
Setteable
Solids, ml/1
TSS,
m
TRC,
Maximum
< 1
6
< 50
Minimum
< 1
< 1
< 50
Average
< 1
2
< 50
Instream Turbidity Impact
Turbidity was measured routinely at designated points upstream and downstream from the
discharge into the French Broad River. About 50% of the time the downstream turbidity did
increase but only 1 out of the 107 samples events every indicated that 50 NTU was exceeded. It
was noted the downstream sample point include the addition stream volume from two major
creeks that converge into the French Broad River after this discharge.
SUMMARY OF PROPOSED CHANGES
In keeping with Division policies the following will be incorporated into the permit:
• Setteable solids and instream turbidity monitoring was removed.
• Aluminum and total iron monitoring reduced to quarterly.
• Total copper, fluoride, manganese, total zinc, TN, TP quarterly monitoring was added.
• Acute toxicity quarterly monitoring was added. (Special condition narrative for
freshwater acute toxicity testing at 90% concentration)
• pH 2/month monitoring with a limit range was added.
• TRC footnote narrative was amended.
• Flow narrative was amended.
• Minimum detection narrative for total copper, manganese, and total zinc was added.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: February 16, 2011
Permit Scheduled to Issue: April 2011
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please
contact Ron Berry at [phone] or email [e-mail].
NAME: 11 ..., a6o�. , DATE: Z111111
REGIONAL OFFICE COMMENTS
NAME:
TE:
SUPERVISOR: DATE:
Fact Sheet
NPDES NCO085511
Page 3 of 3

Date: 2/3/11 DMR Data for NPDES Permit NCO085511
pb:rdb Mills River WTP
o TRC Rdg —TRC Limit
60.------------- --- -- --- - ------------------------
Minimum Detection 50 µg/L Actual WQS limit is 28 µg/I
50.
40 t------------------------------- ---------------- o-------------------------
30. }-------------------
_ _ -----------------------------------------------o-----
O O
20. 00 000000000% 000000000-------
0 O
10. ------------------ --- ------------------------
00 a..
0. °
0 0 0 0 o g g o g o 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> u c a > c m n > u c a > c oo a >
z° o =° °LL' Q Q 0)O z '° & 2 a Q Ln O z
*Total Iron Rdg
0.7 ----------------------- --------------------------------------------------------------
0.6t ------- — ---------------------------------------------------------------------------------
O
0.5------------------------------------------------------------------------------------------
_ 0.4 ------------------------------------------------------------------------------------------
O
E 0.3 --*---------------------------
-----------------------------------------------------------
° O
0.2--------------------------------- --O ------------------
00 0� 00 O O ° 00
0.1 ----a -- 6--------0--0 -0°-o--- ° ----- -- i— -----�--------------�Q°*-%-*.Ot�0oo04CiJ00
0 *0 oab O%Om000 aO O ° ° ° Q>�O 4f�°voo v000°d0'o ° o
0 CO 0 0 0 0 o rn rn rn rn rn rn o 0 0 0 0 0 0 0 0 0 0
> u c a n > c m a > u
z° 0)�' g a < o z° o �°z°
o Total Aluminum Rdg
I
6.0 ---------------------------------------------------------------------
1 O
4.04 ------------------------------------------------------------------------------------------
3.0 -----------------------------------------------------------------------------------------
2.0 -----------------------------------------------------------------------------------------
O
1.0 -----o----------------------------------------- 0------- °------------------------------- O
°oa° °°a9a'o°moo°o�kA 0000�°°°����°°°moo`°
0.0
e0 co rn rn M rn rn rn rn rn rn rn o, o, o 0 0 0 0 0 0 0 0 0 0
> u C > u C .D ' > C Oq O. >
z° o ° �' a i a ,n o z o ° �, a g < ° 0 z°

Date: 2/3/11 DMR Data for NPDES Permit NCO085511
pb:rdb Mills River WTP
o Flow Rdg ■ Flow Monthly Avg
0.12
0.10 0 _ - _
0.08 ----------------------------
----------------
0.06 t ------------------------------------------------------------------------------------
0.04 -------------------------------------------------------------------------------------------
0.02------------------------------------------------------- -----------------------------------
0.00 —T-1 o
00 00 0) C1 01 0) 01 01 01 01 Ol Ol Ol 0) 0 0 0 0 0 0 0 0 0 0 O
0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
> u 9 a a ? o
Z o `� Q Q o O Z o 9 U. Q Q vi O z°
O TSS Daily Rdg
■ TSS Monthly Avg Rdg TSS Daily Limit
TSS Monthly Avg Limit
50.
----
45.
40.
---
35.
------
30.
Q 25.
------ ---
20.------
15.
----------------
-----------
10.
O----------------- -------------- ---------------------------
5.
----- - ----------------
-- ------------- �-------
��,,,��pp
Ax
_
--- -- -- 0---- --
000
00 rn 0) M
rn rn rn rn rn rn 0) rn M o 0 0 0
0 0 0 0 0 0 0
0 o
Z u f0 al M
a , = Q u Z 0 -' LL ` [1
Q v 0 ° Q
t>O C m 6 V >
, IIA O
� Q Z
o
Set Sol Daily Rdg
!Y! Set Sol Monthly Avg Rdg. Set Sol Daily Limit
Set Sol Monthly Avg Limit
0.25
7_-.-
-
0.2
0.15
---- - - - - --
E
0.1
0.05
0.
00
0
00
0
(n
0
M
0
01
0
0)
0
01
0
M
0
M
0
01
0
0)
0
01
0
01
o
O
.�
O
.-i
OO
.1
1
104
.,O
O 0-
.4
0
-i
O O
. q .�
o
a)
�
Qm
c
a
0
>
�i¢HZ
a
Q
)
CA
u
0 Z

DMR Data for NC0085511
Mills River WTP
Turbidity
X Upstream Downstream
90 _
80
----------------------x--------
70
-----------------------------------------0
--------------------------------------
------------------------------------------ --
60 ---------------------------------------------------------------------------------------------------------------------------
50--_-_W_,------- ._--------- ..___,.__._....._..___.._.._.f_,...______...._...__....__._,___.__..... ..
40
El
30-.,,._,_..._._.,....._,....._...__._.__,..,.,.....-.,._,.....,.,.,._?�,.,.....,.._....- _...._.._.._...._..............,.._......v,....X._,.........._,.,...__..._....,.,._...,.._..v..,....,..,.,......._.._.......
X � �
X_..__.....____..._._-
EIP
to
1
00 00 0) 0') 0) 0)M rn 0) 0) 0) 0) 0) 0)O O O O O O O O O 0 0
O O O O O O O O 0 0 O O O O •-+ .� .� .-+ .-, � � � r-I
N M It U) t\o fl- 0000 M 0 rH N TH N M d' Ln to r- 00 a) O r-I

Saltwater RPA
REQUIRED DATA ENTRY
Table 1. Project Information Table 2. Parameters of Concern
Facility Name
WWTP/WTP Grade
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
IWC
Data Source(s)
b CHECK If HQW or ORW only
Rodanthe WTP
1
NCO083909
001
0.3
Blackm t
SA, HQW
Tidal, IWC = 100%
Tidal, IWC = 100%
Tidal, IWC = 100%
Tidal, IWC = 100%
Tidal, IWC = 100%
100.00%
DMR June 2009-2010
Saltwater streams are tidal resulting in all IWC % = 100%. If an
approved model is applied to the discharge then a calculated
IWC % is defined. If a stream is classified as a SA or a PNA
then its is also classified as a HQW The appropriate IWC %
must be entered to properly calculate all WQS.
Par
Par
Pa
Pa
Parl)
Par01
ParO,
Pa r01
rOS
Part(
Part
Part:
Part'
Par1�
Par1E
Pa r1 E
Par1 i
Part E
Par15
Par2C
Par21
Par22
Name Type Chronic Modifier Acute PQL Units
Arsenic
C
50
SW
ug/L
Arsenic
C
10
HH
ug/L
Cadmium
NC
5
SW
42
ug/L
Chlorides
NC
250000
HH
ug/L
Chromium
NC
20
SW
ug/L
Copper (AL)
NC
3
SW
5.8
ug/L
Cyanide
NC
1
SW
1
10
ug/L
Lead
NC
25
SW
221
ug/L
Mercury
NC
25
SW
0.5
Molybdenum
NC
980
SW
ug/L
ckel
NC
8.3
SW
75
ug/L
Total Phenolic CoMpG<ds
NC
300
A
ug/L
Selenium
C
5
SW
ug/L
Silver (AL)
NC
1
SW
1.9
ug/L
Zinc (AL)
NC
86
'`�\!V
95
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
Copy of RPA-SaltwaterverA,input
10/12/2010

,g4C.,U4, )-01-,l-, 0/—'
,g6,)Jute0`t
2/11/2011 IWC Calculations
Mills River WTP Assume upstream TRC level = 0
NCO085511 Assume upstream Fecal level = 0
Prepared By: RDB Check Box if WTP Facility [21
Enter Design Flow (MGD): 0.050 Enter Upstream NH3-N Level (mg/L): 0.220
Enter s7Q10(cfs): + 158.000
Enter w7Q10 (cfs): —k 195.000
Total Residual Chlorine Ammonia (NH3 as N) Limit MAX
(summer) 35.0 mg/L.
7Q10 (CFS)
158
7Q10 (CFS)
158
DESIGN FLOW (MGD)
0.05
DESIGN FLOW (MGD)
0.05
DESIGN FLOW (CFS)
0.0775
DESIGN FLOW (CFS)
0.0775
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
UPS BACKGROUND LEVEL (
0
UPS BACKGROUND LEVEL (
0.220
IWC (%)
0.05
IWC (%)
0.05 NON-POTW
Allowable Conc. (ug/1)
28
Allowable Conc. (mg/I)*
NO LIMIT NO LIMIT
(MONTHLYIDAILY)
Ammonia (NH3 as N)
(winter)
7Q10 (CFS)
195
Fecal Limit
NOT REQUIRED DESIGN FLOW (MGD)
0.05
(If DF >331; Monitor)
DESIGN FLOW (CFS)
0.0775
(If DF <331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF)
UPS BACKGROUND LEVEL (
0.220
IWC (%)
0.04 NON-POTW
Allowable Conc. (mg/I)*
NO LIMIT NO LIMIT
(MONTHLY/DAILY)
' MONTHLY AVG LIMIT
Check other limit does such as basin plan or model
NPDES Servor/Current Versions/IWC
2/11 /2011

m
D
cn
O
z
D
r
m
O
m
z
D
r
D
z
D
r
v
a
a

City of Asheville
Water Resources Department
3374 North Fork Left Fork
Black Mountain, NC 28711
828-271-6100
www.ashevillenc.gov
March 2, 2010
Mrs. Dina Sprinkle
NCDENR/DWWQ/Point Service Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Mrs. Sprinkle:
Please renew the NPDES permit # NC0085511 for the Mills River Water Treatment
Facility. There are no expected changes in the nature and volume of the waste to be
treated. Attached are the completed application forms and our sludge management plan.
Additionally, the existing permit requires weekly monitoring for both iron and aluminum.
We use an aluminum based coagulant in our water treatment process, so monitoring for
aluminum in our process wastewater in�certainly applicable. We do not use an iron based
coagulant such as ferric chloride in out water treatment. We monitor for iron biweekly,
both in our raw water entering the watenreatment process and the potable finished water
as required by the Public Water Supply Section. The concentration of iron in the raw
water, the finished water, and the process wastewater is negligible.
Please consider eliminating the weekly monitoring of iron in this permit. Thanks for
your consideration.
Sincerely, D 15 L—!M u "
MAR 112010
Leslie Carreiro DENR-'A�;�
Water Quality/Production Superintendent POINT SO6RCE 135
jfe
The City of Asheville is committed to delivering an excellent quality of service to enhance your quality of life.

Sludge Handling Plan for 2010
Mills River Water Treatment Plant
City of Asheville Water Resources Department
NPDES Permit NCO085511
Prepared For: NPDES Unit, NCDENR Division of Water Quality
Prepared By: Fred Edwards, Supervisor, Mills River Water Plant
Date: March 2, 2010
At the Mills River Water Treatment Facility a plan to dispose of sludge has
been formulated.
In 1996 a local engineering firm was retained to conduct a sludge
management and disposal study for the water treatment facility. The
information contained in the report has been and will continue to be useful
in our sludge management program,
The Mills River Water Treatment Facility has been designated and is
operated in a manner to minimize the production of large amounts of
sludge. We concentrate and dewater the sludge in the lagoons annually or
more often if needed. A commercial firm performs the pumping of the
sludge from the lagoons and discharges into an approved manhole of the
Metropolitan Sewerage District.
Signature: o
Date: 3/��/ p

L Idw /Nr-1 rlt.
Mills River Water Treatment Plant
Yalu.
Valve Valve
laggon #1 laggnon #2
7501000 gals 1 1 7501100 gals
Value Yalve
Oischarge to the french Broad River
flnr
�2r,9 fi�2w,*e)A.-,C
210M
a0to

OF \NATFR
� r-
Leslie P. Carretro
City of Asheville
3374 North Fork - Left Fork Rd.
Black Mountain, NC 28711
Dear Permitter:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
November 28, 2006
Subject" NPDES Permit Modification
Permit NCO085511
Mills River W'IP
formerly Asheville -Buncombe -Henderson
Regional Water Authority
Henderson County
Division personnel have reviewed and approved your request to transfer ownership of the subject permit,
received on November 27, 2006. This permit modification documents the change in ownership.
Please find enclosed the revised permit. All other terms and conditions contained in the original permit remain
unchanged and in full effect This permit modification is issued under the requirements of North Carolina General
Statutes 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental
Protection Agency.
If you have any questions concerning this permit modification, please contact the Point Source Branch at (919)
733-5083 extension 363.
Sincerely,
,ry an W. Klimek, P.E.
cc: Central Files
Asheville Regional Office, Surface Water Protection
NPDES Unit File
l` Carolina
ioNaturally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: h2o.enr.state.mus 512 N. Salisbury St. Raleigh, NC 27604 FAX [phone]
An Equal Oppoqunit /Affirmative Aclion Employer— 50% RecydW10% Post Consumer Paper

E
Permit NCO085511
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended, the
City of Asheville
is hereby authorized to discharge wastewater from a facility located at the
Mills River WTP
NC Highway 191 northwest of Hendersonville
Henderson County
to receiving waters designated as the French Broad River in the French Broad River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III, and IV hereof.
The permit shall become effective November 28, 2006.
This permit and the authorization to discharge shall expire at midnight on November 30, 2010.
Signed this day November 28, 2006.
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

r
Permit NCO085511
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this
permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and
provisions included herein.
The City of Asheville is hereby authorized to:
1. Continue operation of a WTP consisting of the following treatment units.
♦ Two earthen settling lagoons
This facility is located at the Mills River WTP off NC Highway 191 northwest of
Hendersonville in Henderson County.
2. Discharge treated filter -backwash water at the location specified on the attached
map into the French Broad River, classified B waters in the French Broad River
Basin.

J �` I 4 N 1/ � • l / i
Ad L r;
" UFB 19
x
\ fJ \\ 1 ,
?� [\ 1 `Z UFBa
(`
FB 21,
2050
Butler Bridge 13/ p (\
• n �� `\ r rk t
\ °r
r r •� � ram"` l\S`�`J r r �' '
Discharge Location
NCO085511 — Mills River Regional WTP
3de• 35023'47- Sub -Basin: 04-03-02
itude: 82'31'57-
1 Name; Skyland, N.C.
m Class: B
iving Stream: French Broad River

I
Permit NCO085511
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on January 1, 2006 and lasting until expiration, the Permittee
is authorized to discharge from outfall 001. Such discharges shall be limited and monitored
by the Permittee as specified below for each outfall:
PARAMETER
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow
Weekly
Instantaneous
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
Settleable Solids
0.1 ml/L
0.2 ml/L
Weekly
Grab
Effluent
Turbidity'
Weekly
Grab
Upstream & Downstream
Iron
Monthly
Grab
Effluent
Total Residual Chlorine2
28 pg/L
Weekly
Grab
Effluent
Aluminum
Weekly
Grab
Effluent
Notes:
1. The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If
the turbidity exceeds these levels due to natural background conditions, the discharge
level cannot cause the turbidity to increase in the receiving stream.
2. Limit takes effect July 1, 2007. Until then, the permittee shall monitor TRC [with no
effluent limit].
All samples collected should be of a representative discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

All
NCDENR
North Carolina Department of Environment and Natural
Michael F. Easley, Governor
Division of Water Quality
November 30, 2005
Mr. J. Fred Edwards
Asheville -Buncombe -Henderson Regional Water Authority
4307 Haywood Road
Horse Shoe, North Carolina 28742
Dear Mr. Edwards:
Resources
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
Subject: Issuance of NPDES Permit NC0085511
Mills River WTP
Henderson County
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North
Carolina and the U.S. Environmental Protection Agency dated May 9,1994 (or as subsequently amended).
This final permit includes no major changes from the draft permit sent to you on October 12, 2005:
➢ The Daily Maximum limit for Total Residual Chlorine takes effect on July 1, 2007.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days
following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter
150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail
Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final
and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Quality or permits
required by the Division of Land Resources, the Coastal Area Management Act or any other Federal or Local
governmental permit that may be required. If you have any questions concerning this permit, please contact
Charles Weaver at telephone number [phone], extension 511.
Sincerely,
INN- `' Alan W. Klimek, P.E.
1
cc: Central Files
Asheville Regional Office/Surface Water Protection
NPDES Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 One
512 North Salisbury Street, Raleigh, North Carolina 27604 NofthCarolina
Phone: [phone] FAX [phone] / Internet: h2o.enr.state.nc.us Naturally
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper

Permit NCO085511
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended, the
Asheville -Buncombe -Henderson Regional Water Authority
is hereby authorized to discharge wastewater from a facility located at the
Mills River WTP
NC Highway 191 northwest of Hendersonville
Henderson County
to receiving waters designated as the French Broad River in the French Broad River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III, and IV hereof.
The permit shall become effective January 1, 2006.
This permit and the authorization to discharge shall expire at midnight on November 30, 2010.
Signed this day November 30, 2005.
j �;
00-
an W. Klimek, P.E., Director
vision of Water Quality
t Authority of the Environmental Management Commission

Permit NCO085511
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this
permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and
provisions included herein.
The Asheville -Buncombe -Henderson Regional Water Authority is hereby authorized
to:
1. Continue operation of a WTP consisting of the following treatment units.
♦ Two earthen settling lagoons
This facility is located at the Mills River WTP off NC Highway 191 northwest. of
Hendersonville in Henderson County.,
2. Discharge treated filter -backwash water at the location specified on the attached
map into the French Broad River, classified B waters in the French Broad River
Basin.

jl � + � • t iro � r
\ •.aa I
60
012
\ �� , I lZ\ UFB
M �
Wage d�5° f m
F8 21\\ /� / a=3 •4
-- ate,
ik
ROAD
Q 23 1 t
1 ' Butler bridge l34
,✓' 1 \
•rai
\ rk b
f'
1 i g
r"� e O © 1
• o � \ \`� � r `�• � t L
0
Discharge Location I , \ " p
L It�� ���� Nap
j MA
\ / tx. L
If
/ (UFB 25,, ' Kings ridge
NCO085511— Mills River Regional WTP Facility
Latitude: 35°23'47' Sub -Basin: 04-03-02 Location
Longitude: 82°3l'5T'
Ouad Name: Skyland, N.C.
Stream Class: B Receiving Stream: French Broad River North
thMap not to scale

Permit NCO085511
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on January 1, 2006 and lasting until expiration, the Permittee
is authorized to discharge from outfall 001. Such discharges shall be limited and monitored
by the Permittee as specified below for each outfall:
PARAMETER
y e
LIMITS
t
MONITORING REQUIREMENTS
Monthly
Average
Daly
Maximum .
Measurement
Frequency
Sample Type; ix
Sample Location
Flow
Weekly
Instantaneous
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
Settleable Solids
0.1 ml/L
0.2 ml/L
Weekly
Grab
Effluent
Turbidity'
Weekly
Grab
Upstream & Downstream
Iron
Monthly
Grab
Effluent
Total Residual Chlorine2
28 pg/L
Weekly
Grab
Effluent
Aluminum
Weekly
Grab
Effluent
Notes:
1. The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If
the turbidity exceeds these levels due to natural background conditions, the discharge
level cannot cause the turbidity to increase in the receiving stream.
2. Limit takes effect July 1, 2007. Until then, the permittee shall monitor TRC [with no
effluent limit].
All samples collected should be of a representative discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT
AND NATURAL RESOURCES
Division of Environmental Health
Public Water Supply Section
Michael F. Easley, Governor
William G. Ross Jr., Secretary
Terry L. Pierce, Director
Jessica G. Miles, Section Chief
MEMORANDUM
TO: Mr. Charles H. Weaver, Jr.
NPDES Permits Group
Discharge Permits Unit
Division of Water Quality
FROM: Jessica G. Miles P.E., C.P.M.,Yhief
Public Water Supply Section
DATE: October 17, 2005
SUBJECT: Draft National Pollutant Discharge
Elimination System Permit — NPDES Permit NCO085511
Intent to Issue in Henderson County
Mills River WTP
NCDENR
Reference is made to the above -mentioned Draft National Pollutant Discharge Elimination System
Permits. We have reviewed the permit information and determined the proposed discharge will not
adversely affect water quality upstream of any existing or know proposed public water supply intake.
We concur with the issuance of these permits provided the facilities are operated and maintained properly,
the stated effluent limits are met prior to discharge, and the discharge does not contravene the designated
water quality standards.
If we can be of further assistance, please contact us.
MCO/mo
Nne
orthCarohna
;Vaturally
1634 Mail Service Center, Raleigh, North Carolina 27699-1634 ♦ Telephone: [phone]
Main Fax: [phone] ♦ Lab Forms Fax: [phone] ♦ Internet: http://ncdrinidngwater.state.nc.us/
An Equal Opportunity / Affirmative Action Employer - 50 Recycled 10 % Post Consumer Paper

PUBLII: nu � we --
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT
COMMISSION/NPDES UNIT
1617 MAIL SERVICE CENTER,;
l RALEIGH, NC 27699-1617
NOTIFICATION OF INTENT TO ISSUE
A NPDES WASTEWATER PERMIT
On the basis of thorough staff review and applica-
tion of NC General Statute 143.21, Public law 92-500
and other lawful standards and regulations, the'
North Carolina Environmental Management Com-
mission Proposes to issue a National Pollutant Dis-
charge Elimination System (NPDES) wastewater
discharge Permit to the person(s) listed below ef-
fective 45 days from the publish date of this notice.
Written comments re garding the proposed. Permit
Will be accepted until 30 days after. the Publish
date of this no-tice. All comments re-ceived Prior
to that date are considered in the fi-nal determina-
tions re-gording the proposed permit. The Direc-
tor of the NC Division of Water Quality may decide
to hold a public meeting for the proposed Permit
should the Division receive a significant degree of
public interest::.
Copies of the draft permit and other supporting )n-
formation on file used to determine conditions
present in the draft Permit are available upon re-
quest and poyntenc of; the costs of, reproduction.
Mail comments and/or requests for informati( to
the NC Division of Water: Quality. at the above ad-
1dress or call ale' Point Source Branch ai'(919)
5083, ext 520 or 363. Please include the NPDES per-
mic'number (attached) in.any communictrtion. In-
terested persons may also visit the Division of Wa-
ter Quality at.312 N. Salisbury Street,..Raleighi NC
27604-1148 between the hours of 6 om 5 Pmtore•
view information on file
I Nikoiaos Sellas (4201 Haywood Rd Horse Shoe,
i NC 28742)' has applied for renewal of permit
NCO062669 for -;the Mills River' Restaurant-WWTP
in Henderson County. -This permitted facility dis-
charges treated wastewater, to an unnamed drib
utary to the Mills River in the French Broad River
ni
Basin. Currently ;ammoa `nitrogenl-: fecal col-
iform and total residual chlorine are water quality
limited. This discharge may 'affect future alloca-
tions in this portion of the Mills River `£ e ; .1
J M S Builders & Developers,' Inc has taPPhea for
renewal of NPDES permit NC006%n for the Mills
River -Village WWTP'In Henderson County !Or
,renewal
permitted faulity:.discharges ;treated. wastewater
to the French Broad River ,m the French Broad
n, ;.. rurreatly =total residual chlorine is
s '
!This-p
water
affect future aitoca imp-
French Broad River Basin ty
e
Veolia Wafer North Amenca APerating Services
has applied' for renewal of NPDES permit
NCC*n741 for the Mountmn .Valley Subdivision
:Wenderson:County.`.This Permitted fa-
WTP fmrN
cility discharges treated wastewater to the French
Broad- River. in the, french Broad -River.:Basin.
Currently; ;Mal -residua(-chlorine is water quality
limited: This discharge may affect future alloca-
tions in this: portion of the French Broad River Ba-
sin. -
a
Brookside VI pge Condominiums (630 Brookside
Camp Rd:, 14 dersonville NC 28792) has applied
1 for renewal permit NC0083313 for its WWTP in
C/ I Henderson County -This permitted facility-Ai
charges :treated domestic' wastewater to Feather-
WX stone Creek" -in the French Broad River Bosin.'Cue-
rentlY'' BOD;" ammonia : nitrogen fecal coliform,
dissolved oxygen and total residual chlorine'"ore
,water quality ,limit ed.'This `discharge may affect
future, allocations ,in „this portion of the Feaiher-
I stone Creek. r r x
The Asheville Buncombe -='Henderson Regioncl
Water Authority (4037 Haywood Road .Norse
ShoeNC 287421has applied for renewal of Permit
wo)4". N0008SSI. fof the. Mills River WTP: in Henderson
County lrhis pgrmitted facility discharges filter -
backwash:; wastewater, to the°:French : Broad , River
in the French 7 Broad River, -Basin Currently' total
residual t111onne')swater quality limited This dis-
charge may affect ,future allocations this portion
of the French Broadltrver' �^! ,
Henderson CounWhblic Schools,g3555 Haywood
plied for,;r weal OfRNPDES perhrnit N00066664 for
its RugbY'Junipr High School WWTP iR Henderson
,nnILJ County. -This permitted facility discharges treated
wastewater to °Mill Pond Creek in= le French
prrMa .u,u,c ..,,.,...., ._ ... ...
terehed.
Association"has OPPlied
Riverwind Homeowners
for renewal of permit NC0076708 for Hs Riverwind
Park WWTPi inr Henderson County.
I
1 Mobile Home
I This permitted .facility `discharges treated waste -
water to 'the ench Broad River,'In.the French
Fr
A
o
t Broad River Basin Currently BODiammonia ni-
trogen,-fecal coliform and total residual chlorine
Bmited• This discharge may of
Gi
r are water quality
in this portion of the French
fect'future allocations
3road River. Basin,
AFFIDAVIT OF PUBLICATION
BUNCOMBE COUNTY
SS.
NORTH CAROLINA
Before the undersigned, a Notary Public of said
County and State, duly commissioned, qualified and
authorized by law to administer oaths, personally
appeared Darryl Rhymes, who, being first duly
sworn, deposes and says: that he is the Legal
Billing Clerk of The Asheville Citizen -Times,
engaged in publication of a newspaper known as
The Asheville Citizen -Times, published, issued,
and entered as second class mail in the City of
Asheville, in said County and State; that he is
authorized to make this affidavit and sworn
statement; that the notice or other legal
advertisement, a true copy of which is attached
hereto, was published in The Asheville Citizen -
Times on the following date: October 16, 2005
paper in which said notice, paper, document or legal
advertisement were published were, at the time of
each and every publication, a newspaper meeting all
of the requirements and qualifications of Section 1-
597 of the General Statues of North Carolina and
was a qualified newspaper within the meaning of
Section 1-597 of the General Statues of North
Carolina.
Signed this 18th, October 2 5
Z A- L
06 i re of person rng of idavit)
Sworn to and subscribed before me the 18th day of
October 2005
P

ASHEVILLE
Ms. Carolyn Bryant April 1, 2005
NC DENR/ DWQ/ Point Source Branch
1617 Mail Service Center
Raleigh, N. C. 27699-1617
Dear Ms. Bryant,
Please renew NPDES permit # NCO085511 for the Mills River Water Treatment
Facility. There are no expected changes in the nature and volume of the waste to be
treated. Attached are the completed application forms and our sludge management plan.
Copy: Charlie Casey
Sincerely,
V J. Fred Edwards
Mills River Water Treatment Facility Supervisor
MILLS RIVER WATER TREATMENT FACILITY
REGIONAL WATER AUTHORITY OF
ASHEVILLE, BUNCOMBE, AND HENDERSON
4037 HAYWOOD ROAD
HORSESHOE, NC 28742
[phone]
FAX: [phone]

&L
ASHEVILLE
Ms. Carolyn Bryant April 1, 2005
NC DENR/DWQ/Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Ms. Bryant,
At the Mills River Water Treatment Facility (NPDES permit # NCO085511) a plan to dispose of sludge
has been formulated.
In 1996 a local engineering firm was retained to conduct a sludge management and disposal study for
existing facilities at North Fork and Bee Tree as well as for the Mills River Facility. The information
contained in the report has been and will continue to be useful in our sludge management program.
The Mills River Water Treatment Facility has been designed and is operated in a manner, which should
not generate a large quantity of sludge.
We drain and concentrate the sludge from the lagoons annually or more often if needed.
We use a commercial firm to perform mobile dredging and dewatering.
The Metropolitan Sewerage District accepts our dewatered sludge for final disposal.
Sincerely,
V J. Fred Edwards
Mills River Water Treatment Facility Supervisor
Copy: Charlie Casey
MILLS RIVER WATER TREATMENT FACILITY
REGIONAL WATER AUTHORITY OF
ASHEVILLE, BUNCOMBE, AND HENDERSON
4037 HAYWOOD ROAD
HORSESHOE, NC 28742
[phone]
FAX: [phone]

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Kerr T. Stevens, Director
March 23, 2001
Mr. J. Fred Edwards
Asheville -Buncombe -Henderson Water Authority
4037 Haywood Road
Horse Shoe, North Carolina 28742
Dear Mr. Edwards:
1 • •
IT
;4 kv
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Issuance of NPDES Permit NCO085511
Mills River WTP
Henderson County
Division personnel have reviewed and approved your application for renewal of the subject
permit. Accordingly, we are forwarding the attached NPDES discharge permit. This permit
is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the
Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated May 9, 1994 (or as subsequently amended).
The Division has reviewed your request to eliminate weekly monitoring of iron in this permit.
Iron remains a pollutant of concern, however monitoring will be reduced to monthly. (Refer
to A. (l.)).
If any parts, measurement frequencies or sampling requirements contained in this permit
are unacceptable to you, you have the right to an adjudicatory hearing upon written request
within thirty (30) days following receipt of this letter. This request must be in the form of a
written petition, conforming to Chapter 150B of the North Carolina General Statutes, and
filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North
Carolina 27699-6714). Unless such demand is made, this decision shall be final and
binding.
Please note that this permit is not transferable except after notice to the Division. The
Division may require modification or revocation and reissuance of the permit. This permit
does not affect the legal requirements to obtain other permits which may be required by the
Division of Water Quality or permits required by the Division of Land Resources, the Coastal
Area Management Act or any other Federal or Local governmental permit that may be
required.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES

If you have any questions concerning this permit, please contact Christie Jackson at
telephone number [phone], extension 538.
Sincerely,
Original Signed BY
David A. Goodrich
Kerr T. Stevens
cc: Central Files
Asheville Regional Office/Water Quality Section
NPDES Unit
Point Source Compliance Enforcement Unit

Permit NCO085511
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
- - NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended, the
Asheville -Buncombe -Henderson Water Authority
is hereby authorized to discharge wastewater from a facility located at the
Mills River Regional WTP
NC Highway 191
Northwest of Hendersonville
Henderson County
to receiving waters designated as the French Broad River in the French Broad River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III, and IV hereof.
The permit shall become effective May 1, 2001.
This permit and the authorization to discharge shall expire at midnight on November 30, 2005
Signed this day March 23, 2001.
Original Signed By
David & Goodrich
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC008551 1
SUPPLEMENT TO PERMIT COVER SHEET
Asheville -Buncombe -Henderson Water Authority is hereby authorized to:
Continue operation of a WWTP consisting of the following treatment units.
♦ Two earthen settling lagoons
This facility is located at the Mills River Regional Water Treatment Plant on NC Highway
191 northwest of Hendersonville in Henderson County.
2. Discharge treated filter backwash water at the location specified on the attached map into
the French Broad River, classified C waters in the French Broad River Basin.

Lr
•` � a.� Gas ( e'J `s � .� ' i 'ra // l �.,,•
o
V.
JFB na1f 2 L'': r1539
es
$ '� � ry_,l/w / I f/ i1�,.1; � ♦ 9'.1>���i �/ _ - __'- i !.,1' '�•.,�wage d6so alc� �
"UFS 21\� /-- =©� --n'' g _ _ _) r-1 ` a a •a
eel
IP
Wf� uK�BIN
\;i> i„ / ✓ ✓��•--
V
Butter Bridge23 r
\ `.�0 •rn ' �� lTrai / r v, f�/ `� i lam•
(r �_/- JJJJ � i ro � 1 � '' C„ �� � �pc• • .7F'� ( \r • !•• k• • _ y — �', '�( l ! j• I I ��`` 'i c� r 'i �
rafi
XF
be
Mlles - .y �1� - _ 1ry7 cj =\`s
ar �_ lam`! �,\r ( �\ •.( N ' I
Discha Location , % 1� �`�
g
Nap
!'mile
mil • \� __s 1 •��\\ / •\ 'i• \`
�r`
t �► �.%�' �tl � / Naples
�/ =: �'h liar r
L = x•\ t
ml
IA k
.., h
....
t— i� �_ _-1 _ii � •''r-.t� � i �' i.. ' \JI jrr �)1 � � t r • -��• -` /'t'- ''1�' � •• -'`"� •� .�.- ''ti, \ '•,•1
l ( UFB 25: Kings ridge
207p
Facility Information Facilityi
Latitude: 35°23' 4r Sub -Basin 04-03-02 Lo c atio n
Longitude: &31' 57" '
Quad Name: Skyland
Steam Class: C
Receiving Steals l�emh Broad River North Mills River Regional WTP
NC0085511
Henderson County

Permit NCO08551 1
A. (1.) EFFLUENT. LIMITATIONS AND MONITORING REQUIREMENTS — FINAL
During the period beginning on the effective date of the permit and lasting until expiration,
the Permittee is authorized to discharge from outfall serial number 001. Such discharges
shall be limited and monitored by the Permittee as specified below for each outfall:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Avera a
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow
Weekly
Instantaneous
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
Settleable Solids
0.1 ml/L
0.2 ml/L
Weekly
Grab
Effluent
Turbidity'
Weekly
Grab
Upstream & Downstream
Iron
Monthly
Grab
Effluent
Total Residual Chlorine
Weekly
Grab
Effluent
Aluminum
Weekly
Grab
Effluent
pH2
Weekly
Grab
Effluent
Notes:
1. The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If
the turbidity exceeds these levels due to natural background conditions, the discharge
level cannot cause the turbidity to increase in the receiving stream.
2. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
All samples collected should be of a representative discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

NPDES Reviews for Henderson County
Subject: NPDES Reviews for Henderson County
Date: Tue, 27 Feb 2001 16:00:25 -0500
From: Ray McCall <[e-mail]>
Organization: NC DENR - Asheville Regional Office
To: Jackie Nowell <[e-mail]>,
Jackie Nowell <[e-mail]>,
Harold Saylor <[e-mail]>, Jim Adams <[e-mail]>
Jackie:
Harold ask that I e-mail you and let you know that we have
completed our review of the following Draft NPDES Permits:
Mills River Village
Mills River Resturant %* (,Zf,lo9
Mills River WTP Tg5ll
I have forwarded to you today our concurrance of these permits. We
would like to see these package plants consolidated but realize that a
central sewer system in this corridor would probably promote growth. We
do hope that these plants will be monitored closely for compliance since
there is a Regional Water Treatment Facility below these discharges.
Thank you for the opportunity to comment. Should you have questions
please give us a call at [phone].
Ray McCall
Ray McCall - [e-mail]
North Carolina Dept. of Environment and Natural Resources
Asheville Regional Office - Merrimon Ave. Office
Division of Environmental Health - Public Water Supply
852 Merrimon Ave.
Asheville, NC 28804
Tel: [phone]
Fax: [phone]
Ray McCall <[e-mail]>
NC DENR - Asheville Regional Office
Division of Environmental Health - Public Water Supply
lay
1 of 1 2/27/01 4:13 PM

IV7 10 FPZo2 6-sy- 6,s Vas Z (1k

State of North Carolina
Department of Environment •
and Natural Resources f
Division of Water Quality
James B. Hunt, Jr., Governor NCDVN
Bill Holman, Secretary
Kerr T. Stevens, Director NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
January 10, 2001
MEMORANDUM
I,o: Harold Saylor
NC DENR / DEH / Regional Engineer
Asheville Regional Office
From: Christie Jackson
NPDES Unit
Subject: Review of Draft NPDES Permit NCO08SS11
Mills River Regional WTP
Henderson County
Please indicate below your agency's position or viewpoint on the draft permit and return this form by
February 9, 2001. If you have any questions on the draft permit, please contact me at the telephone
number or e-mail address listed at the bottom of this page.
RESPONSE: (Check one)
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.
El
Concurs with issuance of the above permit, provided the following conditions are met:
1-1 Opposes the issuance of the above permit, based on reasons stated below, or attached:
Signed �• / t VC Date: L Z -r, c/
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 919 733-5083, extension 538 Itax) 919 733-0719
ViSRusONTHE INTERNET@ httpJ/h2o.enr.state.nc.us/NPDES Christie.Jackson@ ncmail.net

NORTH CAROLINA
HENDERSON COUNTY
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County
and State, duly commissioned, qualified, and authorized
by law to administer oaths,( personally appeared
who
being first duly sworn, deposes and says: that he is
J
of Hendersonville Newspaper Corporation, engaged in the
publication of a newspaper known as The Times -News,
published, issued, and entered as second class mail in the
City of Hendersonville, in said County and State; that he is
authorized to make this affidavit and sworn statement;
that the notice of other legal advertisement, a _tr_ue_cop"f"- - "- -
which is attached hereto, was puiblishe in he Ti s-
News on the following dates: 1 i �� �`_ �� ��'�
I,
and that the said newspaper in which such hotiGe,'Paper,
document, or legal advertisement was published was, at
the time of each and every publication, a newspaper meet-
ing all of the requirements and qualifications of Section 1-
597 of the General Statutes of North Carolina and was a
qualified newspaper within the meaning of Section 1-597 of
the General Statutes of North Carolina.
This `r day of — 20
(SIGNED)
Sworn to and subscribed before me, this
day of— -< 20 = l
Notary PubYc
My commission expires: Jo—o
PUbLit, NV I II,L
STATE OF
NORTH CAROLINA
ENVIRONMENTAL
MANAGEMENT
COMMISSION / NPDES
UNIT
1617 MAIL SERVICE
CENTER
RALEIGH, NC
27699-1617
NOTIFICATION OF IN-
TENT TO ISSUE A
NPDES WASTEWATER
PERMIT
On the basis of thorough
staff review and applica-
tion of NC General Stat-
ute 143.21, Public law
92-500 and other lawful
standards and regula-
tions, the North Carolina
Environmental Manage-
ment Commission pro-
poses to issue a National
Pollutant Discharge Elim-
ination System (NPDES)
wastewater dischar e
permit to the persons)
listed below effective 45
days from the publish
date of this notice.
Written comments
regard-
ing the proposed permit
will be accepted until 30
days after the publis
date of this notice. Al
comments received prio
to that date are consid
ered in the final determi
nations regarding th
proposed permit. The Di
rector of the NC Divisio
of Water Quality may de
cide to hold a publi
meeting for the propose
permit should the Divi
sion receive a significa
degree of public interest.
Copies of the draft perm
and other supporting in
formation on file used t
determine condition
present in the draft pe
mit are available upo
request and payment
the costs of reproduction
Mail comments and/o
requests for informatio
to the NC Division of Wa
ter Quality at the abov
address or call M
Christie Jackson at (919
7K extensio
538. Please include th
NPDES permit numbe
Ms
I
(attached) in any com-
m u n i catinn_.10 to rested
persons may also visit
the Division of Water
Qualityat 512 N. Salis-
bury Street, Raleigh, NC
27604-1148 between the
hours of 8:00 a.m. and
5:00 p.m. to review infor-
mation on file.
NPDES Permit Number
NC0071897, Hender-
son's Assisted Living -
Mizpah Healthcare, Inc.,
P. O. Box 999, Mountain
Home, NC 28758 has
applied for a permit re-
newal for a facility locat-
ed in Henderson County
discharging treated
wastewater into an Un-
named Tributary to
Featherstone Creek in
the French River Basin.
Currently BOD, total sus-
pended residue, ammo-
nia & fecal coliform are
water quality limited. This
discharge may affect fu-
ture allocations in this
portion of the receiving
stream.
NPDES Permit Number
NC0070645, Willow
Creek Farms, 3540 Wil-
low Creek Farms Road,
Hendersonville, NC
28739 has applied for a
permit renewal for a fa-
h ctlity located in Hender-
son County discharging
treated wastewater into
r the North Fork of Bill Wil-
low Creek in the French
Broad River Basin. Cur-
e rently no parameters are
water quality limited. This
n discharge may affect fu-
- ture allocations in this
c portion of the receiving
d stream.
- NPDES Permit Number
nt NC0075647, Hidden Gap
Mobile Home Park, P. O.
it Box 226, Dana, NC
28724 has applied for e
o permit renewal for a fa,
s cillty located in Hender
r- son County discharginc
n treated wastewater intc
of an Unnamed Tributary t(
Devils Fork in the Frenct
r Broad River Basin. Cur
n rently fecal coliform an
- water quality limited. Thi
e i discharge may affect fu
ture allocations in thi
portion of the receivin,
n stream.
e NPDES-Femrit Numbe
r NC0062669, Mills Rive
Restaurant, Inc., 420
Havwood Road, Hors
Shoe, NC 28742 has ap-
plied for newal
acili for a fled in
Henderson County dis-
chargi;ig treated waste-
water into an Unnamed
Tributary to Mills River in
the French Broad River
Basin. Currently. ammo-
nia & fecal coliform are
water quality limited. This
discharge may affect fu-
ture allocations in this
portion of the receiving
stream.
NPDES Permit Number
NC0086070, Henderson
County Utility - Edney-
ville, 101 East Allen
Street, Hendersonville,
NC 28792 has applied
for a permit renewal for a
facility located in Hender-
son County discharging
treated wastewater into
Lewis Creek in the
French Broad River Ba-
sin. Currently BOD, am-
monia, fecal coliform and
total residual chlorine
are water quality limited.
This discharge may af-
fect future allocations in
this portion of the receiv-
ing stream.
NPDES Permit Number
NCO085511, Mills River
Regional WTP, 4037
Haywood Road, Horse
Shoe, NC 28742 has ap-
plied for a permit renewal
for a facility located in
Henderson County dis-
charging treated waste-
water into French Broad
River in the French
Broad River Basin. Cur-
rently no parameters are
water quality limited. This
discharge may affect fu-
ture allocations in this
portion of the receiving
stream.
NPDES Permit Number
NC0076708, Riverwind
MHP/Oakwood Homes,
Inc., too Riverwind
Drive, Hendersonville,
NC 28739 has applied
for a permit renewal for a
facility located in Hender-
son County discharging
treated wastewater Into
the French Broad River
in the French Broad. Riv-
er Basin. Currently no
parameters are water
quality limited. This dis-
charge may affect future
allocations in this portion 'I
of the receiving stream.
(045191207n!r —
Better Business Forms (228) 699-1 164

ASH EV 1 LLE
Ms. Christie R. Jackson June 22, 2000
N.C. Dept. of Environment &
Natural Resources
Div. of Water Quality
1617 Mail Service Center Q U U N 2 3 21')n
Raleigh, N.C. 27699-1617
Dear Ms. Jackson,
Our NPDES Permit #NC0085511 is presently up for renewal. The existing permit
requires weekly monitoring for both iron and aluminum. We use an aluminum based
coagulant in our water treatment process, so monitoring for aluminum in our process
wastewater is certainly applicable. We do not use an iron based coagulant such as ferric
chloride in our water treatment process. We monitor for iron biweekly, both in our raw
water entering the water treatment process and the potable finished water as required by
the Public Water Supply Section. The concentration of iron in the raw water, the finished
water, and the process wastewater is negligible.
Please consider eliminating the weekly monitoring of iron in this permit. Thanks for
your consideration.
Copies: Charlie Casey
File
Sincerely,
Vi. Fred Edwards
Plant Supervisor
MILLS RIVER WATER TREATMENT FACILITY
REGIONAL WATER AUTHORITY OF
ASHEVILLE, BUNCOMBE, AND HENDERSON
4037 HAYWOOD ROAD
HORSESHOE, NC 28742
(828) 890L2835
FAX: [phone]

ASHEVILLE
February 24,2000
Mr. Charles H. Weaver, Jr.
NC DENR/Water Quality/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Mr. Weaver,
Please renew NPDES permit # NCO085511 for the Mills River Regional Water Treatment Facility. There
are no expected changes in the nature or volume of the waste to be treated. Attached is the completed
application form and our sludge management plan.
Sincerely,
d. -4-'
J. Fred Edwards
Mills River Regional Water Treatment Facility Supervisor
Copies: Charlie Casey
Tom Frederick
MILLS RIVER WATER TREATMENT FACILITY
REGIONAL WATER AUTHORITY OF
ASHEVILLE, BUNCOMBE, AND HENDERSON
4037 HAYWOOD ROAD
HORSESHOE, NC 28742
(828) 8942835
FAX: [phone]
P(I' iT ` r 7 ; .�

ASHEVILLE
February 24,2000
Mr. Charles H. Weaver, Jr.
NC DENR/Water Quality/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Mr. Weaver,
At the Mills River Regional Water Treatment Facility (NPDES permit # NCO085511) a plan to dispose of
sludge has been formulated.
In 1996 a local engineering firm was retained to conduct a sludge management and disposal study for
existing facilities at North Fork and Bee Tree as well as for the Mills River Facility. The information
contained in the report has been and will continue to be useful in our sludge management program.
The Mills River Regional Water Treatment Facility has been designed and will be operated in a manner,
which should not generate a large quantity of sludge.
We plan to drain and concentrate the sludge from the lagoons annually or more often if needed.
Existing City personnel and equipment can be utilized to remove the concentrated sludge from the
lagoons for ultimate disposal. If necessary, we will use a commercial firm to perform mobile dredging and
dewatering.
The Metropolitan Sewerage District has expressed a willingness to accept our sludge. Also, we have
gained approval from Palmetto Landfill in South Carolina to dispose of our sludge there. They also can
transport the sludge if necessary.
Sincerely,
J. Fred Edwards
Mills River Regional Water Treatment Facility Supervisor
Copies: Charlie Casey
Tom Frederick
MILLS RIVER WATER TREATMENT FACILITY
REGIONAL WATER AUTHORITY OF
ASHEVILLE, BUNCOMBE, AND HENDERSON
4037 HAYWOOD ROAD
HORSESHOE, NC 28742
[phone]
FAX: [phone]

State of North Carolina I .
Department of Environment,
Health and Natural Resources 4• •
Division of Water Quality A&
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary p H N
A. Preston Howard, Jr., P.E., Director
July 29, 1996
Mr. Michael Holcombe
Asheville -Buncombe Water Authority
P.O. Drawer 7148
Asheville, North Carolina 28802
Dear Mr. Holcombe:
Subject: NPDES Permit No. NCO085511
Authorization to Construct
Mills River Regional WTP
Henderson County
A letter of request for an Authorization to Construct was received June 28, 1996 by the Division and final plans and
specifications for the subject project have been reviewed and found to be satisfactory. Authorization is hereby granted for the
construction of facilities related to the discharge of decant from the sludge lagoons with final discharge of filter backwash
water into the French Broad River in the French Broad River Basin.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NCO085511 issued May 24, 1996, and shall be subject to revocation unless the wastewater treatment facilities are constructed
in accordance with the conditions and limitations specified in Permit No. NCO085511.
The sludge generated from these treatment facilities must be disposed of in accordance with G.S. 143-215.1 and in a
manner approved by the North Carolina Division of Water Quality.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the
Permittee shall take immediate corrective action, including those as may be required by this Division, such as the
construction of additional or replacement wastewater treatment or disposal facilities.
The Asheville Regional Office, telephone number [phone], shall be notified at least forty-eight (48) hours in
advance of operation of the installed facilities so that an in -place inspection can be made. Such notification to the regional
supervisor shall be made during the normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday,
excluding State Holidays.
Upon completion of construction and prior to operation of this permitted facility, a certification must be received
from a professional engineer certifying that the permitted facility has been installed in accordance with the NPDES Permit,
this Authorization to Construct and the approved plans and specifications. Mail the Certification to the Permits and
Engineering Unit, P.O. Box 29535, Raleigh, NC 27626-0535.
Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified
wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment facilities. The operator
must hold a certificate of the type and grade at least equivalent to or greater than the classification assigned to the wastewater
treatment facilities by the Certification Commission. The Permittee must also employ a certified back-up operator of the
appropriate type and grade to comply with the conditions of Title 15A, Chapter 8A, .0202. The ORC of the facility must
visit each Class I facility at least weekly and each Class H, III, and IV facility at least daily, excluding weekends and holidays,
and must properly manage and document daily operation and maintenance of the facility and must comply with all other
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Permit No. NCO085511
Authorization to Construct
Mills River Regional WTP
July 29, 1996
Page 2
conditions of Title 15A, Chapter 8A, .0202. Once the facility is classified, the Permittee must submit a letter to the
Certification Commission which designates the operator in responsible charge within thirty days after the wastewater
treatment facilities are 50% complete.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for the life of the
facility.
The Operational Agreement between the Permittee and the Environmental Management Commission is incorporated
herein by reference and is a condition of this Permit. Noncompliance with the terms of the Operational Agreement shall
subject the Permittee to all sanctions provided by G. S. 143-215.6 for violation of or failure to act in accordance with the
terms and conditions of this Permit.
Failure to abide by the requirements contained in this Authorization to Construct may subject the Permittee to an
enforcement action by the Division of Water Quality in accordance with North Carolina General Statute 143-215.6A to 143-
215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from complying with any and all
statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal)
which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have any questions or need
additional information, please contact Mr. Mark McIntire, telephone number [phone], extension 553.
Sincerely,
Preston Howard, Jr., P.E.
cc: Central Files
Permits & Engineering (ATC files)
Asheville Regional Office, Water Quality
Training and Certification Unit

SOC PRIORITY PROJECT:
1F YES, SOC NUMBER
TO: PERMITS AND ENGINEERING UNIT
WATER QUALITY SECTION
ATTENTION: Susan Robson
DATE: February 23 1996
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY Henderson
PERMIT NUMBER NCO085511
PART I - GENERAL INFORMATION
Yes No XX
Ork-o3-oz
1. Facility and Address: Mills River Regional Water Treatment Plant
Mailing: Asheville -Buncombe Water Quthority
P. O. Box 7148
Asheville, NC 28802
2. Date of Investigation: February 22, 1996
3. Report Prepared By: Paul White
4. Persons Contacted and Telephone Number: Charlie Casey, Supt.
259-5955
5. Directions to Site: Site is located near the confluence
of the Mills River with the French Broad River at
Highway 191 (Haywood Road). The entrance is opposite
SR 1426 (Schoolhouse Road) on Hwy 191.
6. Discharge Point(s), List for all discharge points:
Latitude: 350 23' 18" Longitude: 820 31' 57"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
U.S.G.S. Quad No. F8NE U.S.G.S. Quad Name Skyland
7. Site size and expansion area consistent with application? Yes
X Yes No If No, explain:
8. Topography (relationship to flood plain included): Sludge lagoons
are to be located on the first terrace above the flood plain of
the French Broad and Mills River. The discharge outfall line will
be routed about 4000 feet to the French Broad River.
or
Page 1 '

9. Location of nearest dwelling: >1000 feet
10. Receiving stream or affected surface waters: French Broad River
below the intake.
a. Classification: The current classification is WS-IV, but the
Environmental Management Commission has approved the
reclassification to C below the proposed intake for Mills
River Water Treatment Plant.
b. River Basin and Subbasin No.: French Broad 04-03-02
C. Describe receiving stream features and pertinent downstream
uses: Receiving stream is in wide flood plain which is under
agricultural usage. Downstream uses include agriculture
(irrigation & pesticide mixing), aquatic and wildlife
propagation, fishing, canoeing, and hunting. There is a
section about 45 miles downstream which is used for primary
recreation (whitewater rafting, kayaking, and canoeing).
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted .104 MGD average,
.550 mgd maximum. (Ultimate Design Capacity)
b. What is the current permitted capacity of the Wastewater
Treatment facility? N/a
C. Actual treatment capacity of the current facility (current
design capacity n/a
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two years:
n/a
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: new application
f. Please provide a description of proposed wastewater treatment
facilities: Proposed facilities consist of three lagoons
providing a total of 2,244,000 gallons of settling volume, or
22 days under average conditions.
g. Possible toxic impacts to surface waters: chlorine, aluminum
h. Pretreatment Program (POTWs only): n/a
in development approved
should be required not needed
Page 2

2. Residuals handling and utilization/disposal scheme: landfill
a. If residuals are being land applied, please specify DEM
Permit Number
Residuals Contractor
Telephone Number
b. Residuals stabilization: PSRP PFRP OTHER
C. Landfill: not specified.
d. Other disposal/utilization scheme (Specify):
3. Treatment plant classification (attach completed rating sheet): I
4. SIC Codes(s): 4941
Primary 21 Secondary
Main Treatment Unit Code:500 1
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds
or are any public monies involved. (municipals only)? No
2. Special monitoring or limitations (including toxicity) requests:
none -
3. Important SOC, JOC, or Compliance Schedule dates: (Please
indicate) none
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4. Alternative Analysis Evaluation: Has the facility evaluated all
of the non -discharge options available. Please provide regional
perspective for each option evaluated. Yes
Spray Irrigation: not feasible
Connection to Regional Sewer System: not available
Subsurface: not feasible
Other disposal options:
5. Other Special Items: none
Page 3

PART IV - EVALUATION AND RECOMMENDATIONS
The Asheville Buncombe Water Authority has applied for a discharge
permit to discharge filter backwash, sedimentation basin drainage, and
intake sluicing to the French Broad River. According to 02H .0106, the
intake sluice water would not have to be included in the permit. The
lagoon discharge is to be routed to the French Broad River just below
the intake.
It is recommended that the permit be issued for this discharge.
Signature of Report Preparer
Water Quality Regional Supervisor
a/;-4, /? 4,
-
Dat
Page 4

RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: RE(�/O/t4L� I-y-rp- /5/it�r//PLC
Owner or Contact Person: 4C-9'4CL- U�21l3E
Mailing Address: n, /31)X 71qg Z-
County: E if S0 Telephone: 7�`i- �S9~SASS
Present Classification: -,VIA New Facility Existing Facility
NPDES Per. No. NC00'9S Sl ! Nondisc. Per. No.WQ Health Dept.Per No.
Rated by: N-(l [_ l.VY/TE Telephone:ZoY-,�S/-L ?G6Date: A ~ `��
Reviewed by: Health Dept. Telephone:
of �r C , -vZuc Regional Office Telephone:
Central Office Telephone:
ORC: 4%Z tj Grade: Telephone:
Classification:Check Classification(s): _ Subsurface _ Spray Irrigation Land Application
Wastewater •ne)<p 11 111 IV Total Points:
i
UPLANT PROCESSESAND :O ATED CONTROLEQ. EM i►I M .C■ ARE AN INTEGRAL PART OF INDUSTRIALir: QiQ1 Ili► Sl-iALIL NOT
��►► � : ! � : 1 1: : lu =►I .�: I■ 'r 1: L�r �. . 0..: 1.�► � � ' 1. :►� ! 1=►�. �� .'JI ►. �►. �. .11. :►•.
SUBSURFACE CLASSIFiCAT ,l
(check all units that apply)
1. septic tanks
2. pump tanks
3. siphon or pump -dosing systems
4. sand filters
5. grease trapAnterceptor
6 oil/water separators
7. gravity subsurface treatment and disposal:
8. pressure subsurface treatment and disposal:
SPRAY IRP"TiON CLASSIFICATION
(check all units thal apply)
1. preliminary treatment (definition no. 32 )
2. lagoons
3. septic tanks
4. pump tanks
5. . pumps
6-sand fillers
7-grease trap/interceptor
e. oil/water separators
9. disinfection
10. chemical addition for nutrient/algae control
11. spray Irrigation of wastewater
In addition to the above classifications, pretreatment of wastewater in excess of these components shnll
be rated using the point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
WASTEWATER TREATMENT FACILITY CLASSIFtCAT)ON
The following systems shall be assigned a Class I classification, unless the flow is of a significant quantity or the technology is unusually
complex, to require consideration by the Commission on a case-by-caso basis: (Check H Appropriato)
1. Oil/waler Separator Systems consisting only of physical separation, pumps and disposal;
2. Soplic Tank/Sand Filter Systems consisting only of septic tanks, dosing apparatus, pumps,sand filters, disinfection
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed -loop Recycle Systems;
5. Groundwater Remedialion Systems consisting only of oil/waler separators, pumps, air -stripping, carbon adsorption, disinfection
and dispw J;
6. Aquacullure operations with discharge to surface waters;
7. X. Water Plant sludge handling and back -wash water treatment:
8. Sealood processing consisting of screening and disposal.
9. Single-family discharging systems, with Iho exception of Aerobic Treatment Units, will be classified it permitted alter July 1,
1993 or H upon inspection by the Division, it is found that the system Is not being adequately operated or maintained. Such
systems will be notified of the classification or redassificalion by the Commission, in writing.

The following scale is used for rating wastewater treatment facilities: (circle appropriate points)
POINTS
ITEM
(t) Industrial
Pretreatmerx units or Industrial Pretreatment Program (see definition No. 33)...................................................4
(2) DESIGN
FLOW OF PLANT IN gpd (not applicable to non -contaminated cooling waters, sludge handling facilities for
water purification
plants, totally closed cycle systems(soe definition No. 11). and facilities consisting only of hem
(4)(d) or Items (4)(d) and (11)(d))
0 - 20.000...................................................................................................................................... 1
20.001 - 50.000......................................................................................................................................2
50.001 - 100.000.....................................................................................................................................3
100.001 - 250.000...................................................................................................................................4
250.001 - 500.000..................................................................................................................................5
500.001 - 1.000,000................................................................................................................................8
1.000.001 - 2.000,000...........................................................................................................................10
2.000.001 (and up) rate 1 point additional for each 200.000 gpd capacity up 10 a maximum of .................30
Design Flow (gpd)
(3) PRELIMINARY UNITS/PROCESSES (see definition No.32)
(a)
Bar Screens ...............................................................................................................................................1
(b)
or
Mechanical Screens, Static Screens or Commirwting Devices ...... ................................................................... 2
(c)
GritRentoval..............................................................................................................................................1
(d)
or
Mechanical or Aerated Grit Removal.............................................................................................................2
(e)
Flow Measuring Device ................................................................................................................................1
(I)
or
Instrumented Flow Measurement................................................................................................................2
(g)
Preaeratlon...............................................................................................................................................2
(h)
Influent Flow Equalization..........................................................................................................................2
(1)
Grease or Oil Separators - Gravity..........................._...._.............................................................................
Mechanical................................................................................................................................................3
e
Dissolved Air Flotation ...............................................................................................................................
())
Prechloriratlon.........................................................................................................................................5
(4) PRIMARYTRE ATMEATT UN(TS/PROCESSES
(a)
Septic Tank (see definition No. 43)............................................................................................................2
(b)
Imhoff Tank................................................................................»............................................................5
(c)
Primary Clarhlers.........................................................................................................................................5
(d)
Settling Ponds or Settling Tanks for Inorganic Non -toxic Materials (sludge handling facilities for water
purification plants, sand, gravel, stone, and other mining operations except recreational activities such as gem
orgold mining)........................................................................................................................................2
(5) SECONDARY TREATMENT LNTSrPRDCESSES
(a)
Carbonaceous Stage
(1) Aerallon-High Purity Oxygen System.........„...................................................................20
DiffusedAir System.......................................................................................................1 0
Mechanical Air System (fixed, floating or rotor)..................................................................8
SeparateSludge Reaeratlon.............................................................................................3
(II) Trickling Filter
HighRate.......................................................................................................................7
StandardRate ......................... „„................................................................................... 5
PackedTower .......................... ».....................................................................................
(III) Biological Aerated Filter or Aerated Biological Fllter..... ..„.................................................10
(Iv) Aerated Lagoons......................................................................................................... 10
(v) Rotating Biological Contactors......................................................................................10
(VI) Sand Filters -Intermittent biological ....................... .......................................................... 2
Recirculatingbiological....................................................................................................3
(vII) Stabilization Lagoons....................................................................................................5
(vill) Clarifier ..........................................................................................................................5
(Ix) Single stage system for combined carbonaceous removal of BOD and nitrogenous removal by
nitrification (see definition No. 12)(Poirds for this hem have to be In addition to Items
(5)(a)(1) through (5)(a)(vill),
utilizing the extended aeration process (see definition No.3a)..........................................2
utilizing other than the extended aeration process......„....................................................8
(x) Nulrtent additions to enhance BOD removal......................................................................5
(x1) Biological Culture ('Super Bugs')addhion........................................................................5
(b)
Nitrogenous Stage
(I) Aeration - High Purity Oxygen System ................. „........................................................20
DltfusedAir System.......................................................................................................10
Mechanical Air System (fixed, floating or rotor) ........... ......................................................8
SeparateSludge ReaeralIon............................................................................................3
(II) Trickling Filter -High Rate...................................................................................................7
Standard Rats................................................................................................................5
PackedTower................................................................................................................5
(III) Biological Aerated Flher or Aerated Biological Flher.............................................................10
(Iv) Rotating Biological Contactors; ......................................................................................10
(v) Sand Filter - Intermittent biological..................................................................................2
Recirculatingbiological.....................................................................................................3
(vl) Ctadfer..........................................................................................................................5
(6) TERTIARY OR ADVANCED TREATMENTLINITW170CESSES
(a)
Activated Carbon Beds -
without carbon regeneration...................................................................................................5
withcarbon regeneration...........................„..........................................................................1 5
(b)
Powdered or Granular Activated Carbon Feed-
-Mlhoul carbon regeneration.................................................................................................5
-with carbon regeneration.....................................................................................................1 5
(c)
Air stripping.............................................................................................................................................5
0
(d)
Denhrhlcatlon Process..............................................................................................................................1
(e)
Electrodlalysls............................................................... .............................................................................
(1)
Foam Separation.......................................................................................................................................5
(g)
Ion Exchange............................................................................................................................................5
(h)
Land Application of Treated Effluent (see definition No. 22b) (not applicable for sand, gravel, stone
andother similar mining operations) by high rate Infiltration..........................................................................4
(I)
Microscreens........................................................................................................................................... 5
())
Phosphorous Removal by Biological Processes (See definition No. 26).........................................................20
(k)
Polishing Ponda - without aeration...........................................................................................................2
withaeration .................................................................................................................5

(1�
.............A
Post Aeration - cascade......................................................................................................................2
..............
diffused or mechanical...................................................................................
(m)
Reverse Osmosis........................................................................................................................................5
(n)
Sand or Mixod-Media Fillers - low ralo.........................................................................................................2
highrate
(a)
.....................................................................5
Treatment procosses for removal of metal or cyanide...................................................................................1 5
for removal of toxic materials other than metal or cyanide ........................................... _.1 5
(p)
treatment processes
(7)
SLUDGETREAIMENT
(a)
Sludge Digestion Tank - Heated (anaerobic)...............................................................................................IO
Aerobic..............................................................................................................................................5
Unheated(anaerobic)................................................................................................................................3
(b)
Sludge Stabilization (chemical or thermal)...................................................................................................5
........ 2
(c)
Sludge Drying Beds - Gravity
VacuumAssisled......................................................................................................................................5
(d)
Sludge Elutrlallon.....................................................................................................................................5
(e)
Sludge Conditioner (chemical or thermal)....................................................................................................5
(1)
(g)
Sludge Thickener (gravity)..........................................................................................................................
Dissolved Air Flotation Unit (not applicable to a unit rated as(3)(1)].............................................................8
.............2
(h)
Sludge Gas Ulllization (including gas storage) ...............................................................................
...•....•••..5
(1)
Sludge Holding Tank - Aerated......................................................................................................
())
Non, ae rated.............................................................................................................................................2
Sludge Incinerator (not Including activated carbon regeneration)................................................................10
(k)
Vacuum Filter. Cenlrffugo, or Filter Press or other similar dewatering devices...................................................10
(e)
RESIDUALS UTILIZATIOWDISPOSAL (including incinerated ash) ......2
(a)
(b)
......
Lagoons..............................................................-2-2a......................
Land Application (surface and subsurface) (see delinhlon 22)
landfill operator who holds the land application peril
by contracting to a land application operator or
(c)
orlandfill peril........................................................................................................................................2
Dedicated Landfill(burial) by the permitlee of the wastewater treatment facility...............................................5
(9)
DGF4ECT1-_J
(a)
Chlorination.............................................................................................................................................5
(b)
Dechlorination...........................................................................................................................................
(c)
Ozone .................. ........................................................................... .........................................................5
(10)
(d) Radiation ................ .............................................. ...................................................................................5
CHEMICAL ADDITION SYSTEM(S) ( see definition No. 9) (not applicable to chemical additions rated as hem (3)(]).
(5)(a)(xl),
(6)(a), (6)(b), (7)(b), (7)(e), (9a), (9)(b) or (9)(c) 5 points each:
....5
List
..................................................................................................................................5
(1 1)
MISCELLANEOUS UNf WROCESSES
(a) Holding Ponds, Holding Tanks or Settling Ponds for Organic or Toxic Materials Including wastes from mining
operations containing nitrogen or phosphorus compounds In amounts significantly greater than is common ..
(b)
for domestic wastewater........................................................................................................._...
............
Effluent Flow Equalization (not applicable to storage basins which are Inherent In land application systems)_...2
(c)
Stage Discharge (not applicable to storage basins Inherent In land application systems).....__..._..._........_.__5
(d)
..................................................................................................._....3
Pumps ................. .....................
(e)
Stand -By Power Supply................................................................................................................................... 3
(()
Thermal Pollution Control Device......................................................................................................
TOTALPOINTS..........................................................................
Class I...........................................................................................................5-25 Points
Class11................................................... ................... ...................................26-50 Points
Ctaslg........................................................................................................51-65 Points
ClassIV .......................................................................................................66-Up Points
---- ---------------------- ---- ---------- ----
Facilities having a rating of one through lour points. Inclusive, do not require a con"Ied operator.
Facilities having an activated Budge process wig be assigned a minimum classification of Class II.
Facilities having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class It.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class III.
------------------------------ ----------------
AOD4 DEFINITIONS
The fallowing definitions shall apply throughout this Subchapter.
(1) Activated Carbon Beds. A physical/chemical method for reducing soluble organic material from wastewater effluent; The column -type beds used In this
method will have a flow rate varying from two to eight gallons per minute per square fool and may be either upflow or downflow carbon beds. Carbon may or
may not be regenerated on the wastewater treatmert plant she;
(2) Aerated Lagoons. A basin In which all solids are maintained In suspension and by which biological oxidation or organic matter Is reduced Through artificially
accelerated transfer of oxygen on a flow -through basis;
(3) Aeration. A process of bringing about Intimate contact between air or high purity oxygen In a liquid by spraying, aghallon or d tiuslon;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hours.
(4) Agriculturally managed she. Any she on which a crop Is produced, managed, and harvested (Crop includes grasses, grains, trees, etc.);
(5) Air Stripping. A process by which the ammonium ion is first converted to dissotved ammonia (pH adjustment) with the arrmonla then released to the
atmosphere by physical means: or other similar processes which remove petroleum products such as benzene, toluene, and xylene;
(6) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize the
absorbed Impurities;
(7) Carbonaceous Stage. A singe of wastewater treatment designed to achieve 'secondary' effluent limits;
(8) Centrifuge. A mechanical device In which centrifugal force Is used to separate solids from liquids or to separate liquids of different donsHas:
(9) Chemical Addition Systems- The addition of chemical(s) to wastewater al an application point for purposes of Improving solids removal, pH adjustment,
alkalinhy control, etc.; the capability to experiment with different chemicals and different application points to achieve a specific result will be considered one
system; the capability to add chamical(s) to dual units will be rated as one system; capability to add a chemical at a different applicalion points for different
purposes will result In the systems being rated as separate systems;
(10) Chemical Sludge Condhiorting. The addition of a chemical compound such as time. lerrlc chloride, or a polymer to wet sludge to coalesce the mass prior to
Its application to a dewatering device;
(11) Closed Cycle Systems. Use of holding ponds or holding tanks Ion containment of wastewater containing Inorganic, non-loxic materials from sand, gravel,
crushed mom or other similar gmrallons. Such Oyrfom6 shall carry a maximum of two ioinis regardless of pumping facilities or any other ari urtenancas;
(12) Cn,04r 4 Removal of Ca,honacoous 13OD and Nitrogenous ilomoval by Nhrificallon- A singlo stage system required to achieve penrtit ellluerl 1-4•. "1 POD
11 ' .1— :�: o.•. hinfoniral rnirlor.

(15) Eloctrodialysls. Process for removing Ionized salts from water through Ilia use of Ion-soloctivo Iomexchange membranes;
(16) Filter Press. A process operated mechanically for partially dowaloring sludge;
(17) Foam Separation. The planned frothing of wastewater or wastewater effluent as a means of removing excessive amounts of detergent materials Through
Ilia introduction of air In the form of line bubbles; also called loam fractionation;
(18) Grft Removal. The process of removing grit and other heavy mineral matter from wastewater;
(19) Intholf Tank. A deep two story wastewater tank consisting or an upper sedimentation chamber and a lower sludge digestion chamber.
(20) Instrumented Flow Moasurarnont. A device which Indicates and records rate of flow:
(21) Ion Exchange. A chemical process In which Ions from Iwo dilforort molecules are exchanged;
(22) Land application:
(a) Sludge Disposal. A final sludge disposal method by which wok sludge may be applied to land either by spraying on the surface or by subsurface injoction
(i.e., chisel plow); (not applicable for typos of sludge described In (11) or this Rule);
(b) Treated Effluent. The process of spraying treated waslewaler onto a land area or other methods of application of wastewater onto a land area as a
means of linal disposal or treatment;
(23) Microscreon. A low speed, continuously back -washed, rotating drum filler operating under gravity conditions as a polishing method for removing
suspended solids from effluent;
(24) Nitdlicalion Process. The biochemical conversion of unoxidizod nitrogen (ammonia and organic nitrogen) to oxidized nhrogon (usually nitrate);
(25) Nitrogenous Stage. A separate stage of wastewater treatment designed for lite specific purpose of converting ammonia nitrogen to nitrate nitrogen;
(26) Phosphate Removal, Biological. The removal of phosphorus front wastewater by an oxiciattoxic process designed to enhance luxury uptake of phosphorus
by the microorganisms;
(27) Poilshing Pond. A holding pond following secondary treatment with sufficient detention time to allow settling of linely suspended solids;
(28) Post Aeration, Aeration following conventional secondary treatment units to Increase effluent D.O. or for any other purpose;
(29) Post Aeration. (Cascade) A polishing method by which dissolved oxygen Is added to to effluent by a nonmechanical, gravity means of flowing down a
"dos of steps or weirs; The Ilow occurring across Ilia stops or woks moves In a fairly thin layer and the operation of the cascade requires no operator
adjustment; thus, zero points are assigned even tough this Is an essential stop to meeting the limits of the discharge permit;
(30) Powdered to Granular Acilvaled Carbon Feed. A biophysical carbon process Thal utilizes biological activity and organic absorption by using powdered or
granular activated carbon; Virgin or regenerated carbon is food controlled into the system;
(31) Preaerallor, A lank constructed to provide aeration prior to primary treatment:
(32) Preliminary Units. Unit operations In the treatment process, such as screening and comminution, that prepare the liquor for subsequent major operations;
(33) Industrial Pretreatment.
(a) Pre-treatment Unit, Industrial. The conditioning of a waste at Its source before discharge, to remove a to neutralize substances Injurious to sewers and
treatment processes or to effect a partial reduction In load on the treatment process which Is operated by the same governing body as the wastewater
treatment plant being rated:
b) Pre-treatment Program, Industrial - must be a Slate or EPA required program to resolve points on the rating shoot;
(34) Primary Clarifiers. The first settling tanks through which wastewater Is passed In a treatment works for the purpose of removing settleable and suspended
solids and BOD which Is associated with the solids;
(35) Pumps. All Influent, effluent and In -plant pumps:
(36) Radiallor, Disinfection or sterilization process utilizing devices emitting ultraviolet or gamma rays;
(37) Reverse Osmosis. A treatment process In which a heavy contaminated liquid Is pressurized through a membrane forming nearly pure liquid free from
suspended solids;
(38) Rotating Biological Contractors. A fixed biological growth process In which wastewater flows through tanks In which a series of panlally submerged circular
surfaces are rotated;
(39) Sand Filters:
(a) Intermittent Biological. Filtration of effluent following septic lanks, lagoons, or some other treatment process In which lunher blodecomposhlon Is
expected to produce desired effluents; Hydraulic loading rates on those filters are computed In gpd/ac and have a resuhing low gpm/sl (less than one);
b) Recirculating biological • the came type of sand filler as defined In Subparagraph (39) (a) of this Rub with the added capability to recycle effluent back
through the sand Ilher,
(40) Sand or Mixed -Media Filters. A polishing process by which effluent Iimlis are achieved through it further reduction of suspended solids;
(a) low rate — gravity, hydraulically loaded Ilher whit loading rates In the one to three gpm/sf range;
(b) high rate — a pressure, hydraulically loaded Cher with loading rates In the five gpm/sf range; At any rate, the loading rate will exceed three gprr✓st;
(41) Secondary Clarhlers. A far* which follows the biological unit of treatment plant and which has the purpose of removing sludges associated with the
biological treatment units;
(42) Separate Sludge Reaerallon. A part of Ile contact slablllzallon process wtwro the activated sludge Is transferred to a tank and aerated before roluming it
to the contact basin: -
(43) Septic Tank A singte-story settling lank In which sallied sludge Is In contact with Ilia wastewater flowing through the lank; shall not be applicable for
septic lank systems serving single family residences having capacity of 2.000 gallons or loss which discharge to a nitrification field;
(44) Sludge Digestion. The process by which organic or volatile matter and sludge Is gasified, liquefied, mineralized or converted Into more stable organic matter
through the acilvlty of living organisms, which Includes aerated }holding larks;
(45) Sludge Drying Beds. An area comprising natural or artificial layers of porous materials upon which digested sewage sludge Is dried by drainage and
evaporation:
(46) Sludge Elutrlalion. A process of sludge conditioning In which certain constituents are removed by successive washings with fresh water or plant effluent:
(47) Sludge Gas Utlllzatlon. The process of using sewage gas for the purpose of heating buildiings, driving engiries, etc.;
(48) Sludge Holding Tank (Aerated and Nonaerated). A lank utilized for small wastewater treatment plants not containing a digester In which sludge may be
kept fresh, and supematant withdrawn prior to a drying method (i.e. sludge drying beds); This may be done by adding a small amount of air simply to keep the
sludge fresh, but not necessarily an amount that would be required to achieve stabilization of organic matter. A nonaeraled tank would simply be used to
decant sludge prior to dewalerirg and would not allow long penlods (several days of detention) without resuhing odor problems;
(49) Sludge Incinerators. A Iumace designed to bum sludge and to remove all molsture and combustible materials and reduce the sludge to a sterile ash;
(50) Sludge Slabllizatlon (Chemical or Thermal}. A process to make treated sludge less odorous and putrescrble, and to reduce ilia pathogenic organism
content; This may be done by pH adjustment, chlorine dosing, or by heal treatment:
(51) Sludge Thhlckener. A type of sedimentation lank In which the sludge Is permitted to settle and thicken through agitation and gravity;
(52) Stabilization Lagoon, A type of oxidation lagoon In which biological oxidation of organic matter Is effected by natural transfer of oxygen to the water from
air (not a polishing pond);
(53) Stand -By Power Supply. On she or portable electrical generating equipment;
(54) Static Screens. A stationary screen designed to remove solids, including non-blodogradable particulate (Iloalabie solids, suspended solids and BOD
reduction) from municipal and Industrial wastewater treatment systems;
(55) Terilary Treatment. A stage of treatment following secondary which Is primarily for the purpose of offluent polishing; A selling lagoon or sand or coal filter
might be employed for this purpose;
(56) Thermal Pollution Control Device. A device providing for the transfer of twat from a fluid flowing In tubes to another fluid outside the tubes, or vice versa;
or other mearhs of regulating liquid temperaturos;
(57) Thermal Sludge Conditioner. A conditioning process by which heat Is added for a protractod period of time to Improve the dewaterabllhy of sludge by the
solubllizing and hydraulizing of lhw smaller and more highly hydrated sludge particles;
(58) Toxic Materials. Those wastes or combinations of wastes, Including dlsoaso-causing agents which after discharge and upon exposure, Ingestion. Inttahallon
or asslmllallon Into arty organism, ehher directly from to environment or Indirectly by Ingestion through food chains, will cause death, disease, behavioral
abnormalities. cancer, genetic mutations, physlohogical malfunctions (Including malfunctions In roproductlon) or physical deformallons. In such organisms or }heir
offspring; Toxic materials Include, by way of Illustration and not Ilrnhallon: load, radmlum, chtromlurn, mercury, vanadium, amon1c, zinc, onho-nitro-chlorobenzone
(ONCB), polychiorinaled blphonyls (PCBs) and dlchlorodlphonyt Irlchloroothane (DDT); and any other materials that have or may horealter be determined to have
toxic properties;
(59) Trickling Flhor. A biological treatment unfit conslsUng of a malarial such as broken store or rock over which wastewater Is distrlbuted; A high rate trickling
filler Is one which operated at betwoen 10 and 30 mgd per acre. A low raja Irickhing fihor Is one which Is designed to operate at one to lour mgd per acre:
(60) Trickling Flhor (Packed Tower). A plug flow type of operation In which wastewater flows down through successivo layers or media or 11hrate material; Organic
malortat is mnovod continually by Ilia active biological fixed growth In each successvve layer. This method may produce 'secondary' quality effluent, or may be
adapted to produce a Nuilled effluent;
(61) Vacuum Filter, Centrifuges, or Flier Presses- Devkros which are designed to remove excess water from ehhor digested or undlgodod sludge prior to disposal
or further lreatneol.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC0085511
During the period beginning on the effective date of the permit and lasting until expiration, the Perinittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
Total Suspended Solids
Settleable Solids
Turbidity
Total Residual Chlorine
Iron
Aluminum
Discharge Limitations
bs/day Units (specify)
Mon, Ava. Daily _Max Mon. Ava, Daily Max.
30.0 mg•/I 45.0 mg/I
0.1 ml/I 0.2 ml/1
Monitoring Reciuiremen
Measurement
Sample
Frequency
ly_p e l
Weekly
Instantaneous
2/Month
Grab
Weekly
Grab
Weekly
Grab
Weekly
Grab
Weekly
Grab
Weekly
Grab
E
E
E
U,D
E
E
E
* Sample locations: E - Effluent, U - Upstream, D - Downstream
** The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If the turbidity exceeds these levels due to natural
background conditions, the discharge level cannot cause any increase in the turbidity in the receiving water.
All samples collected should be of a representative discharge.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be tonitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
m