NC0077763_Permit Issuance_20120514

4LA�
NENRC�D
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P.E.
Governor Director
May 14, 2012
Joseph Roy
Plant Superintendent
City of Belmont
P.O. Box 431
Belmont, NC 28012
Subject: Issuance of NPDES Permit Renewal
NCO077763
Belmont WTP
Gaston County
Dear Mr. Roy:
Dee Freeman
Secretary
The Division of Water Quality (Division) personnel have reviewed and approved your application for renewal of the
subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. It 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.
There are a few changes to this final permit from the draft permit sent to you on March 14, 2012:
* Monitoring frequency changes were made in accordance with the permitting strategy for Water Treatment
Plants.
* The turbidity limit was removed.
+ The reopener clause was removed.
-* Upstream and Downstream sampling requirements were described.
The following changes have been made from the current permit:
* In accordance with our permitting strategy for Conventional Water Treatment facilities, and an EPA
required statistical review of the DMR reports, monitoring has been removed from the permit for
Settleable Solids, Iron and Aluminum.
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: http: !! h2o.state.nc.us 1
An Equal Opportunity 1 Affirmative Action Employer
NonrthCarolina
Nawrallb,

• Quarterly monitoring has been added for Total Copper, Manganese, Fluoride, Total Zinc, and Ammonia
Nitrogen.
• A quarterly Whole Effluent Toxicity Test at 0.33% has been added.
• Instantaneous Flow measurement is retained, but the duration of flow must be recorded.
• The TRC footnote has been updated in accordance with our permitting strategy.
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 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 must be
filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714.
Unless such demand is made, this permit remains final and binding.
This permit is not transferable except after notifying the Division of Water Quality. The Division may modify and re-
issue, or revoke this permit. Please notice that this permit does not affect your legal obligation to obtain other permits
required by the Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act, or other
federal or local governments.
If you have questions, or if we can be of further service, please contact Jim McKay at iames.mckay@ ncdenr.gov or call
[phone].
Sincerely,
�harles Wakild, P.E.
Enclosure: NPDES Permit FINAL NCO077763 Belmont WTP
cc: Mooresville Regional Office, Surface Water Protection with Fact Sheet
NPDES Unit
Central Files
Aquatic Toxicology, Susan Meadows - via email

Permit NCO077763
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 Belmont
is hereby authorized to discharge wastewater from a facility located at the
Belmont WTP
301 North Tenth Street
Belmont
Gaston County
to receiving waters designated as the Catawba River in the Catawba River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts
I, II, III and IV hereof.
This permit shall become effective June 1, 2012.
This permit and authorization to discharge shall expire at midnight on July 31, 2015.
Signed this day May 14, 2012.
4 Ak- JL J0'4�
Coles Wakild, P. or
i 'sion of Water Quality
Authority of the Environmental Management Commission

Permit NCO077763
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 Belmont is hereby authorized to:
1. Continue to operate a conventional water treatment plant (with surface water source water) with a
discharge of wastewaters from filter -backwash wastewater and sedimentation basins, which are
settled in a clarifier prior to discharge The water treatment plant has a design potable flowrate of
10 MGD and a monthly wastewater discharge of 0.075 MGD. This facility is located at the
Belmont WTP (205 North Tenth Street, Belmont) in Gaston County.
2. Discharge from said treatment works at the location specified on the attached map into the Catawba
River, classified WS-IV, B; CA waters in the Catawba River Basin.

Permit NCO077763
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NCO077763
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Facility
Location
QuaA# G14BE Citpof Belmont WrP
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Subbaiin3"
Recuv.%Stm.CatawbaRiwr
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Permit NCO077763
A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit 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:
EFFLUENT
CHARACTERISTICS'
Ll1VIITS
MONITORING REQUIREMENTS
60hly.
_AVera a ..
Daily
_ Maxiinum _
Measurement
quip
Sample Type
_.. -
.Sample Location
Flow
2/ Month
Instantaneous
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/ Month
Grab
Effluent
Turbidity
Monthly
Grab
Upstream & Downstream
Total Copper
Quarterly
Grab
Effluent
Total Zinc
Quarterly
Grab 3
Effluent
Total Manganese
Quarterly
Grab
Effluent
Fluoride
Quarterly
Grab
Effluent
Total Residual Chlorine 4
28 µg/L
2/ Month
Grab
Effluent
Whole Effluent Toxicity
Monitoring
Quarterly
Grab
Effluent
Footnotes:
1. The duration of discharge flow must be reported.
2. Upstream is at least 100 feet upstream of the discharge point. Downstream is at least 100 feet below the discharge
point.
3. Parameter should be sampled in conjunction with Quarterly Toxicity Testing.
4. Limit and monitoring apply only if chlorine or chlorine derivatives are used for disinfection. The Division shall
consider all effluent TRC values reported below 50 µg/L to be in compliance with the permit. However, the
Permittee shall record and submit all values reported by a North Carolina certified laboratory (including field
certified), even if these values fall below 50 µg/L.
5. Whole Effluent Toxicity (Ceriodaphnia dubia) at 0.33%; March, June, September and December; refer to Special
Condition A.(2)
All samples must be collected from a typical discharge event.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit NCO077763
A. (2.) CHRONIC TOXICITY MONITORING (QUARTERLY)
The permittee shall conduct quarterly chronic toxicity tests using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent
versions.
The effluent concentration defined as treatment two in the procedure document is 0.33 %. The permit
holder shall perform quarterly monitoring using this procedure to establish compliance with the permit
condition. The tests will be performed during the months of March, June, September and December.
Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below
all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter code
TGP3B. Additionally, DWQ Form AT-1 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Section
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 a month in which toxicity monitoring is
required, 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 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 this monitoring requirement 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.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, 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.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NCO077763
Facilit- Information
Applicant/Facility Name:
City of Belmont Water Treatment Plant
Applicant Address:
P.O. Box 431, Belmont North Carolina 28012
Facility Address:
205 North loth Street, Belmont North Carolina 28012
Permitted Flow
Not limited. Design capacity is 0.20 MGD.
Type of Waste:
Conventional filter backwash
Facility/Permit Status:
Renewal
Facility Classification
PC 1
County:
Gaston
Miscellaneous
Receiving Stream:
Catawba River
Regional Office:
Mooresville
Stream Classification:
WS IV, B CA
State Grid/ USGS
To o Quad:
G14NE/ Belmont
303(d) Listed?
Not in 2012 Draft
List. All NC
Streams are impaired
for H .
Permit Writer:
Jim McKay
Subbasin:
03-08-34
Date:
March 1, 2012
HUC
03050101
Drainage Area (mi2):
2,015
Summer 7QI0 (cfs)
95
Winter 7Q10 (cfs):
95
30Q2 (cfs)
95
Average Flow (cfs):
95
INC (%):
0.33
Primary SIC Code:
N/A
SUMMARY
The City of Belmont uses a Conventional Water Treatment Plant to treat water drawn from the Catawba
River. The facility is designed to provide 10.0 Million Gallons per Day of treated water. The backwash
wastewater is estimated to be 0. 075 Million Gallons per Day. The facility discharges the backwash
wastewater to the Catawba River.
The receiving stream (South Fork Catawba River) is classified WS-IV, B CA waters in the Catawba
River Basin. This reach is not listed on the 2012 Draft 303(d) list. All North Carolina streams are listed
as Impaired for Mercury based on fish consumption advisories.
Permitting Strategy_:
Permitting Strategy for Conventional Water Treatment Plants is followed for this facility. The 7Q 10
flow data listed is based on release data.
Discharge Data Review and RPA
DMR data for 2009, 2010, and 2011 was reviewed. RPA was performed for iron and aluminum. Neither
shows RP, monitoring will be removed from the permit.
Whole Effluent Toxicity Testine
The facility does not perform Toxicity testing. Chronic toxicity testing using Ceriodaphnia dubia at 0.33
% will be added to the permit per the permitting strategy.
City of Belmont WTP Fact Sheet
NPDES Permit NCO077763 Renewal
Page 1

Proposed Changes to the Permit
• Instantaneous flow measurement will remain, the frequency will increase to 2/ Month, and
the duration of flow must be reported.
• Monitoring for pH was removed from the permit in August 2000 at the request of the City.
The source water pH was shown to be consistently between 5.5 and 5.9 SU.
• Monitoring for Setttleable Solids and limits are removed.
• Monitoring for Iron and Aluminum will be removed. See Discharge Data Review and RPA
section.
• The facility does add chlorine to the water, so the TRC footnote will be revised per the
Permitting Strategy. Monitoring is set at 2/ Month per the permitting strategy.
• The facility does discharge Fluoride and Zinc Orthophosphate, so monitoring will be added
for Fluoride and Total Zinc. Monitoring is Quarterly.
• Quarterly monitoring for Manganese is added, discharge is to WS classified waters.
• A Chronic Whole Effluent Toxicity test will be added per the permitting strategy
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: March 2012 (est.)
Permit Scheduled to Issue: May 2012 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact Jim
McKay at [phone], or by email at [e-mail].
NAME: DATE:
REGIONAL OFFICE COMMENT:
NAME: DATE:
/°e e.,-
I-
NPDES SUPERVISOR COMMENT: (v M•n 6 � C2_ no r`a Jonc i L
A y fc A w� iCr� o f qi- f y
-5�- N- a'
City of Belmont WTP Fact Sheet
NPDES Permit NCO077763 Renewal
Page 2

Belmont WTP
REASONABLE POTENTIAL ANALYSIS
NCO077763
Qw (MGD) = 0.20
WWTP/WTP Class: PC 1
IQ1OS(cfs)= 77.60
1WC @ IQ10S = 0.40%
7Q1OS (cfs)= 95.00
1WC @ 7QIOS = 0.33%
7Q 1 OW (cfs) = 95.00
IWC ®7Q 1 OW = 0.33%
30Q2 (cfs) = 95.00
1WC cQ 30Q2 = 0.33%
Avg. Stream Flow, QA (cfs) = 95.00
IWC @ QA = 0.33%
Receiving Stream: Catawaba River Stream Class: WS IV, CA
Outfall 001
Qw = 0.2 MGD
PARAMETER
STANDARDS & CRITERIA (2)
r
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
(1)
�
a
Z
'
NC WQS / Applied %2 FAV /
17 # Det. Max Pred Allowable Cw
Chronic Standard Acute
Cw
Acute: NO WQS
Total Iron (AL)
NC
1000 WS(7Ql Os)
ug/L
13 12
8,397.9
_ _ _ _ _ _ _ _ _ _
Chronic: 303,030.3
No RPA, Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
Acute: NO WQS
Aluminum WS
NC
6500 WS(7Q 1 Os)
ug/L
13 11
4,861.6
_ _ _ _ _ _ _ _
_ _ _ _ _ — _ ' _
Chronic: 1,969,d97.0
_
No RP, No Limit based on WS
No value > Allowable Cw
Acute: NO WQS
Aluminum Aquatic Life
NC
87 FW(7Q10s)
ug/L
13 11
4,861.6
_ _ _ _ _
_ _ _ _ _ _ _
Chronic: 26,363.d
No RPA, I�radicted Max < 50°� o(Alloweble Cw - No
No value > Allowable Cw
Imonit0iing required
RPA-FreshwaterV o, rpa
Page 1 of 1 3/1/2012

Table 1. Project Information
❑ CHECK if HQW or ORIN only
Facility Name
W WTP/WTP Grade
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q1 Ow (cfs)
3002 (cfs)
CIA (cfs)
1 Q1 as (cfs)
Data Source(s)
CHECK far MODEL
Freshwater RPA
13 REQUIRED DATA ENTRY
Belmont WTP
PC
NCO077763
__.. 001
0.200
Catawaba River
WS IV, CA
95.00
95.00
95.00
95.00
77.60
DMRs 2009 - 2011
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.
Panel
Par02
Par03
Par04
Pi Pares
Par06
Par07
Pares
Par09
Par10
Par11
Par12
Par13
Par14
Parts
Par16
Par17
Parla
Par19
Par20
Par21
Par22
Table 2. Parameters of Concern
Name Type Chronic Modifier Acute PQL Units
Arsenic
C
50
FW
ug/L
Arsenic
C
10
HH/WS
ug/L
Beryllium
NC
6.5
FW
ug/L
Cadmium
NC
2
FW
15
ug/L
Chlorides (AL)
NC
230,000
FW
ug/L
Chlorinated Phenolic Compounds
NC
1
A
ug/L
Total Phenolic. Compounds
NC
300
A
ug/L
Chromium
NC
50
FW
1,022
ug/L
Copper (AL)
NC
7
FW
7.3
ugh -
Cyanide
NC
5
FW
22
10
ug/L
Fluoride
NC
1,800
FW
ug/L
Lead
NC
25
FW
33.8
ug/L
Mercury
NC
12
FW
0.5
ng/L
Molybdenum
NC
160
.. WS
ug/L
Nickel
NC
25
WS
261
ug/L
Selenium
NC
5
FW
56
ug/L
Silver (AL)
NC
0.06
FW
1.23
ug/L
Zinc (AL)
NC
50
FW
67
ug/L
Total Iron (AL)
NC
1000
WS
ug/L
Aluminum WS
NC
6500
WS
ug/L
Aluminum Aquatic Life
NC
87
FW
ug/L
RPA-FreshwaterV o, input
3/1/2012

REASONABLE POTENTIAL ANALYSIS
Total Iron (AL)
Aluminum WS
Date Data
BDL-1120L
Results
• •
Date
Data
BDL=1/2DL
Results
1
Jan-09
20
10
Std Dev.
328.3627
1
Jan-09
60.0
30
Std Dev.
265.6826
2
Apr-09
232
232
Mean
233.9231
2
Apr-09
177.0
177
Mean
252.0769
3
JUI-09
160
160
C.V.
1.4037
3
Jul-09
127.0
127
C.V.
1.0540
4
Oct-09
175
175
n
13
4
Oct-09
296.0
296
n
13
5
Jan-10
150
150
5
Jan-10
319.0
319
6
Apr-10
352
352
Mult Factor =
6.51
6
Apr-10
212.0
212
Mult Factor =
4.72
7
JuF10
123
123
Max. Value
1.290.0 ug/L
7
Jul-10
57.0
57
Max Value
1.030.0
8
Oa-10
1
107
107
Max. Fred Cw
8,397.9 ug/L
8
Oct-10
115.0
115
Max. Fred Cw
4,861.6
9
Jan-11
1290
1290
9
Jan-11
1030.0
1030
10
Mar-11
34
34
10
Mar-11
161.0
161
11
Apr--11
121
121
11
Apr-11
473.0
473
12
JUI-11
166
166
12
Ju411
60.0
30
13
Oct-11
121
121
13
Oct-11
250.0
250
14
14
RPA-FreshwaterV o, data
-2- 3/1/2012

REASONABLE POTENTIAL ANALYSIS
ug/L
ug/L
Aluminum Aquatic Life
Date
Data
BDL=112DL
Results
1 Jan-09
60.0
30
Sul Dev.
265.6826
2 Apr-09
177.0
177
Mean
252.0769
3 Jul-09
127.0
127
C.V.
1.0540
4 Oct-09
296.0
296
n
13
5 Jan-10
319.0.
319
6 Apr-10
212.0
212
Mult Factor=
4.72
7 Jul-10
57.0
57
Max. Value
1,030.0 ug/L
8 Oct-10
115.0
115
Max. Pred Cw
4,861.6 ug/L
9 Jan-11
1030.0
1030
10 Mar-11
161.0
161
11 Apr-11
473.0
473
12 Jul-11
< 60.0
30
13 Oct-11
250.0
250
14
3-
RPA-FreshwaterV o, data
3/1/2012

Mffilk
IR-5MMIR NR
North Carolina Department of Environment and Natural Resoure%le wvw Suzy
Division of dater Quality
Beverly Eaves Perdue Chaves Wakild, P. E. Dee Freeman
Governor Director Secretary
March 14, 2012
To: Britt Setzer
NC DENR / DWR/ Regional Engineer
Mooresville Regional Office
From: Jim McKay
Complex NP ES Permitting
Subject: Review of proposed NPDES Permit NCO077763
Belmont WTP, Gaston County.
Please indicate below your agency's position or viewpoint on the draft permit and return this form by
April 14, 2012. If you have any questions on the draft permit, please contact me at telephone number
[phone], or via e-mail at [e-mail].
RESPONSE: (Check one)
Concur with the issuance of this permit provided the facility is operated and maintained properly, the stated
LIA
effluent limits are met prior to discharge, and the discharge does not contravene the designated water quality
standards.
F—I Concurs with issuance of the above permit, provided the following conditions are met:
aOpposes the issuance of the above permit, based on reasons stated below, or attached:
1617 Mal Service Getter, Raleigh, North Carolina 27699-1617
Location: 512 A Salisbury St Raleth, North Carolina 27604
Phony 919$07.63001 FAX: 919a7-6492
Internet: w_avW nMW tetoualfiv aro
An EgtW Oppeduniiy % Aftafive Action Employer
N Pg.coo : a
�iiral

EVD
villa Raymai Office -
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WA
NCDENR
North Carolina Depadment of Environment and Natural •Resources �� �
Division of Water Quality �'�UV Wftler Supply
Beverly Eaves Perdue Charles Walcild, P. E. Dee Freeman.
Governor Director Secretary
March 14, 2012
MEMORANDUM
To: Britt Setzer
NC DENR / DWR/ Regional Engineer
Mooresville Regional Office
From: Jun McKay
Complex f4PI5ES Permitting
Subject. Review of proposed NPDES Permit NCO085588
Lincolaton WTP, Lincoln County.
Please indicate below your agency's position or viewpoint on the draft permit and return this form by
April 14, 2012. If you have any questions on the draft permit, please contact me at telephone number
[phone], or via e-mail at [e-mail].
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.
aConcurs with issuance of the above permit, provided the following conditions are met:
aOpposes the issuance of the above permit, based on reasons stated below, or attached:
1617 Mail service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St Raleigh, North Carolina 27604
Phone: 919-807.MOD I FAX [phone]
Internet: w► w-mcwJgM ati .o-ID
An Equal oppwW* %AfiirtnrmAction Empl*r
1VFIle X44#�-
Carmlria

PUBLIC NOTICE
North Carolina
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 Emi-
ronmental Management
Commission proposes to
issue a NPDES waste-
water discharge permit to
the person(s) listed below.
Written comments regard-
ing the proposed permit
will be accepted until 30
days after the publish date
of this notice. The Director
of the NC Division of
Water Quality (DWQ) may
hold a public hearing
should there be a signifi-
cant degree of public inter-
est. Please mail comments
and/or information re-
quests to DWQ at the
above address. Interested
parsons may visit the
DWQ at 512 N. Salisbury
Street, Raleigh, NC to re-
view information on file.
Additional information on
NPDES permits and this
notice maybe found on our
website: hltp;([
Howor /web/wc/
woioeinodes%caienoar or
by telling (919) 807-63tM.
Daniel Stowe Botanical
Garden, Belmont North
Carolina has requested re-
newal of NPDES Permit
NC0088684. This permit-
ted facility discharges re-
verse osmosis water treat-
ment system to an un-
named tributary to Ca-
tawba Creek within the Ca-
tawba River Basin.
Town of Belmont has ap-
plied for renewal of
NPDES -permit
NC0077763 for the Bel-
mont WTP in Gaston
County. This permitted fa-
cility discharges treated
wastewater to the Catawba
River in the Catawba River
Basin.
1C-March 18, 2012.
Info: test GS509016 to
56654
AFFIDAVIT OF INSERTION OF ADVERTISMENT
The Gaston Gazette
Gastonia, N.C.
Gaston County
The Gaston Gazette does certify that the advertisement for:
NOTICE OF INTENT TO ISSUE NPDES WASTEWATER PERMIT: DANIEL STOWE
BOTANICAL GARDENS, NCOU7776
Measuring 8.80 inches appeared in The Gaston Gazette, a newspaper published in
Gaston County, Gastonia, N.C., in issue(s):
03/18/2012
Name of Account: NCDENR/DWQ/Point Source Branch
Order Number: 54509016
Ad Number: 54573621
Sworn to, and subscribed before me this 19 th day of March, 2012.
NOTARY
�c ,,PUBLIC
tlio Co��
, , , /1/, J�
Tina McCombs, Notary Public
My Commission Expires July4, 2012

To: NPDES Unit
Water Quality Section
Attention: Dina Sprinkle
SOC PRIORITY PROJECT: No
Date: January 11, 2010
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Gaston
NPDES Permit No.: NCO077763
PART I - GENERAL INFORMATION
1. Facility and address: City of Belmont WTP
205 North loth Street
Post Office Box 431
Belmont, NC 28012
5BG
2. Date of investigation: January 7, AW Zo%
3. Report prepared by: Samar Bou-Ghazale, Environmental Engineer II
4. Person contacted and telephone number: Joe Roy, [phone]
5. Directions to site: From the jct. of Hwy. 273 and Hwy. 7 in the Town of Belmont, turn
(east) on Hwy. 7 and travel to 10th street. Turn right 10th street, and the WTP is located at
the end of the road.
6. Discharge point(s), List for all discharge points: -
Latitude: 35' 14' 27" Longitude: 81' 00' 59"
Attach a USGS Map Extract and indicate treatment plant site and discharge point on map.
USGS Quad No.: G14NE
7. Site size and expansion area consistent with application: Yes. There is area available for
expansion, if necessary.
8. Topography (relationship to flood plain included): The site is gently rolling with slopes
ranging from 2 - 8%. The WTP is not located in a flood plain.
9. Location of nearest dwelling: Approx. 150f feet from the WTP site.

Page Two
10. Receiving stream or affected surface waters: Catawba River
a. Classification: WS-IV, B CA
b. River Basin and Subbasin No.: Catawba 030834
C. Describe receiving stream features and pertinent downstream uses: The discharge
enters a dry ditch, however, the City owns all of the property that the ditch passes
through down to the river, therefore, the ditch could be considered a conveyance
channel for the WTP's effluent. There are other downstream users of the
receiving waters, including the City's WWTP discharge.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater: 0.2 MGD (Design Capacity)
b. What is the current permitted capacity: Flow is not limited in the current permit.
C. Actual treatment capacity of current facility (current design capacity): 0.2 MGD
d. Date(s) and construction activities allowed by previous ATCs issued in the
previous two years: N/A
e. Description of existing or substantially constructed WWT facilities: The existing
WWT facilities consist of a clarifier with a discharge of the supernatant.
f. Description of proposed WWT facilities: There are no additional WWT facilities
proposed at this time.
g. Possible toxic impacts to surface waters: Chlorine is added to the waste stream.
However, the facility is meeting the TRC limits of 28µg/l without de -chlorination.
h. Pretreatment Program (POTWs only): Not Needed.
2. Residual handling and utilization/disposal scheme: Residuals generated by this facility are
land applied by Southern Soil Builders via Land application permit No.WQ0019504.
3. Treatment plant classification: Class I (no change from previous rating).
4. SIC Code(s): 4941 Wastewater Code(s): 21 MTU Code(s): 5003
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? No public monies were used in the construction of this
facility, however, the WTP is now owned by a municipality.
2. Special monitoring or limitations (including toxicity) requests: None

Page Three
3. Important SOC/JOC or Compliance Schedule dates: This facility is neither under an SOC
nor is one being considered at this time.
4. Alternative analysis evaluation: The only alternative to the existing discharge is a
connection to the City's sewer collection system, however, Belmont's W WTP staff do not
want the alum residuals that typically accompanies WTP discharges (and the associated
hydraulic loading) that a discharge such as this would impose on the WWTP.
PART IV - EVALUATION AND RECOMMENDATIONS
The City of Belmont requests renewal of the subject permit. There have been no changes
to the existing WWT facilities since the last permit renewal. The wastewater is generated from
the backwash of the existing 10 backwash filters. According to Mr. Roy, the backwash consumes
approximately 75,000 gallons per filter and occurs every 70 hours interval. Also, it should be
noted that the existing 10 basins are flushed every 3 months and the sludge from the clarifier is
pumped once a year by Southern Soil Builders and land applied via permit WQ0019504. The
sludge generated from the facility amount to approximately 26.8 dry-ton/year.
Also, as mentioned above, chlorine is added to the waste stream. However, the facility is
meeting the TRC limits of 28µg/l without de -chlorination.
Pending review and approval by the Western NPDES Program Unit, it is recommended
that the permit be renewed as requested.
Signature of,/1�Rep � rep Date
////
Water Quality Regional Supervisor Date

Belmont Water Plant Flow Through Schematic
Filters
Chemical Injection Point
Catawba River
Raw Water Pump House
Floccuation Basins
Sedimentation Basins
3.0 MGD
Clearwells
Finished Water Pump House
Flow from Fitter Back Wash or Basin Cleanout
Clarifier
Sludge Pumped Out and Land Applied
Decant from Clarifier
0.075 MGD
.9 MGD All ummum
Chlorine
Caustic
4.9
To Land Application Site
City of Belmont Water Plant (2009)
5.2 MGD
1 KMnO4 j
'Flow Rates are typical for when process is in C 4.9 MGD
ooeration. but may vary according to demand.

CAK��
City of Belmont Public Works
Utilities- Water Treatment Plant
205 North Tenth Street ' PO Box 431 ' Belmont, NC 28012
www.citYofhehnont.orr
Telephone [phone] ' Fax [phone]
Solids Handling Plan for the City of Belmont WTP
The wastewater from the Belmont WTP is allowed to settle in the clarifier for a minimum of two hours.
A valve is opened after proper settling time to allow the supernatant to be discharged. Settled sludge is
pumped out as needed (usually once a year). Sludge is land applied via permit WQ0019504.
The solids are settled out in the Sludge Thickener. All operators have access to the City of Belmont
Water Treatment Plant Operation & Maintenance Manual, which provides an explanation of the Sludge
Thickener and its operation in section 4.2. The description is attached to this plan as well.
Pictures of the land application process are below:

CITY OF BELMONT WATER TREATMENT PLANT
CHAPTER 4 - WASTE HANDLING FACILITIES
4.2 SLUDGE THICKENER
4.2.1 Objectives and Design Basis
The objectives of the Sludge Thickener are to collect the sludge flows from the Sedimentation
Basins. to separate the solids and water, and to concentrate the solids for pumping to the
Centrifuge Building, or pumped .out to trucks for land application.
Typically, sludge thickeners will concentrate the influent solids by two to seven times. For
example, an influent solids concentration of four percent could be thickened to a concentration
between about 8 percent and 28 percent. Solids and water separate by gravity and the solids are
allowed to accumulate in the sludge thickener. Once the thickener is full, the solids can be
pumped out to be land applied, or pumped to the Centrifuge.
4.2.2 Equipment Description
A. SLUDGE THICKENER
Construction:
concrete
Diameter:
61 feet
Depth (maximum):
16 feet
Capacity:
349,400 gallons
Surface Area:
2,920 ftz
Sludge Scraper
Manufacturer: Envirex
Type: H-60LT
Collector speed: 6.13 feet/minute
Motor for Reducer
Motor Manufacturer:
Baldor
Model:
M3546T-5
Horsepower:
1.5
Minutes per revolution:
31.25
Speed:
1730 rpm
Voltage:
208
Amperage:
5.6
1. Equipment Characteristics
The Sludge Thickener is located east of the Clearwells next to the Centrifuge Building. The
thickener is used to collect sludge flows from the Settling Basins and drain water from the
City of Belmont 1 4.2

Clearwells. A 16-inch influent line is provided for the Sludge Thickener from a sewer manhole
near the Clearwells. The influent line discharges into a center feed well in the thickener.
The thickener is supplied with a center -mounted drive platform and center column. A walkway
is provided to access the drive platform as needed. The center feed well is suspended from th
drive platform. A drive unit is mounted on the drive platform and consists of a drive motor,
primary and secondary gear reducers, a drive cage, and a turntable that drives the scraper arm
assembly. A right-angle speed reducer is attached to the drive motor as a primary reducer. The
drive motor and primary reducer use a chain drive to rotate the secondary gear reduce. Two
torque switches are supplied for the drive unit. The switches are used to activate an alarm and
to stop the drive unit if high torque conditions develop. The drive unit rotates a drive cage that
turns the scraper arms as needed. The scraper arm assembly consists of two scraper arms
equipped with a number of scrapers and squeegees. The scrapers are angled to help pull
settled sludge to the center'of the tank,
The bottom of the Sludge Thickener slopes toward the center. A sludge concentrator is
positioned in the bottom of the thickener below the center column. The concentrator is
positioned in the bottom of the thickener below the center column. The concentrator has two
paddles that are driven along with the scraper arms. The paddles are mounted 180 degrees
apart and 90 degrees from either scraper arm. Settled solids are gently mixed by paddles to
concentrate the solids and to help keep them fluidized in the concentrator.
2. Principles of Operation
Sludge from the Settling basins flows by gravity to the 16-inch thickener influent line and
enters the center feed well. The center feed well separates the influent sludge flow from
the clear supernatant in the. thickener. The feed well also helps direct the influent flow
downward into the thickener. Solids and water begin to separate as the sludge settles in
the thickener. Sludge eventually settles to the bottom of the thickener, while clear water is
decanted through the effluent line.
4
City of Belmont (2009) 2 4.2