NC0021156_Permit Issuance_20061214

NFIODES DOCYNENT SCANNINO COVER SMEET
NPDES Permit:
NC0021156
Mount Holly WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
December 14, 2006
This document its printed on reuse paper. -:Ignore any
content on the reverse side

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
December 14, 2006
Mr. David Kraus
CityManager
City of Mount Holly
P. O. Box 406 / South Main Street
Mount Holly, North Carolina 28120
Subject: Issuance of NPDES Permit N00021156
Mount Holly W WTP
Gaston County
Dear Mr. Kraus:
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 pemtit sent to you on October 25,
2006.
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 Mad
Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final
and binding.
Please note that this Pernik 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 permts 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
Karen Rust at telephone number [phone], extension 361.
Sincerely, ^
Alan W. Klimek, P.E.
cc: Central Files
Mooresville Regional Office/Surface Water Protection Section
NPDES Files
Aquatic Toxicology Unit
EPA Region 4
N. C. Division of Water Quality 1617 Mail Service Center
Internal: hltpJ/h2o.enr.state.nc.us 512 N. Salisbury St.
YhCarolina
trrraUil
Raleigh, North Carolina 27699-1617 Phone: [phone] Customer Service
Raleigh, NC 27604 Fax: [phone]
An Equal Opportunity/A(fmtative Action Employer

•
NPDES Permit No. NCO021156 f 'x
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
(NPDES)
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,
City of Mount Holly
is hereby authorized to discharge wastewater from a facility located at
Mount Holly WWVTP
Broome Street, Mount Holly
Gaston County
to receiving waters designated as the Catawba River within 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 January 1, 2007.
This permit and authorization to discharge shall expire at midnight February 28, 2010.
Signed this day December 14, 2006.
Alan W. Klimek, P.E., Direr
Division of Water Quality
By Authority of the Environmental Management Commission

0
ti
NPDES Permit No. NCO021156
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 Mount Holly is hereby authorized to:
1. Continue discharging 4.0 MGD of treated domestic and industrial wastewater
from an activated -sludge wastewater treatment facility consisting of:
• manually cleaned influent bar screen,
• dual grit chambers,
• Parshall flume with instrumented flow measurement,
• flow equalization basin,
• three aeration basins with mechanical aeration,
• dual secondary clarifiers,
• dual chlorine contact chambers with gas chlorination,
• four sludge holding tanks
• dechlorination
• dual sludge holding tanks (not in use - formerly clarifiers that have been
replaced)
• dual sludge drying beds (not in use),
located at the Mount Holly WWTP, Broome Street, Mount Holly, Gaston County;
2. to discharge from said wastewater treatment works through Outfall 001 to the
Catawba River (see attached map), a stream classified as WS-IV CA waters within
the Catawba River Basin.

WE
m
i!
n
.r-
City of Mount Holly
Mount Holly WWTP
Latitude:
350 15' 55" N State Grid/Ouad: F 14 SE / ML Holly,
Longitude:
81000' 35" W Permitted Flow: 4.0 MGD
Receivine Stream:
Catawba River Drainage Basin: Catawba River Basin
Stream Class:
WS-IV CA Sub -Basin: 03-08-33
Facility
Location
not to scale
North NPDES Permit No. NCO021156
Gaston Count

i.
NPDES Permit No. NCO021156
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 through Outfall 001. Such discharges shall be limited and monitored by the
Permittee as specified below:
PARAMETERS
EFFLUENT
LIMITS
MONITORING
REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow (MGD)
4.0
Continuous
Recording
I or E
BOD, 5 day, 20°C 2
30.0 mg/L
45.0 mg/L
Daily
Composite
E, I
Total Suspended Residue (TSR)2
30.0 mg/L
45.0 mg/L
Daily
Composite
E, I
NH3 as N
3/Week
Composite
E
Fecal Coliform (geometric mean)
200 / 100 ml
400 / 100 ml
Daily
Grab
E
Total Residual Chlorine (TRC)
28
Daily
Grab
E
Dissolved Oxygen3
Daily
Grab
E
Temperature (°C)
Daily
Grab
E
H4
Daily
Grab
E
Total Nitrogen (NO2 + NO3 +
TICN)
Monthly
Composite
E
Total Phosphorus
Monthly
Composite
E
Chronic Toxicity5
Quarterly
Composite
E
MBAS
Quarterly
Composite
E
Total Copper
2/Month
Composite
E
Total Zinc
2/Month
Composite
E
Total Silver
Monthly
Composite
E
Cyanide
22 L
Weekly
Grab
E
Temperature, °C
Variable6
Grab
U, D
Conductivity
Variable6
Grab
U, D
Dissolved Oxygen
Variable6
Grab
U, D
Table Footnotes:
1. Sample Locations: E — Effluent; I — Influent; U — Upstream at Hwy 27 bridge; D — Downstream, just below Hwy 29/74
bridge.
2. Monthly average effluent concentrations for Biochemical Oxygen Demand (BOD5) and TSR shall not exceed 15% of
respective influent values (i.e. the facility shall achieve 85% removal).
3. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L.
4. pH shall not fall below 6.0 nor exceed 9.0 standard units.
5. Chronic Toxicity (Ceriodaphnia) at 6 %; quarterly during February, May, August, and November (See Special
Condition A. (2.)
6. Variable: permittee shall sample upstream and downstream 3/week during summer months of June, July, August, and
September, weekly during the rest of the year.
Units: mg/L = milligrams per liter ml = milliliter NH3 as N = ammonia as nitrogen
µg/L = micrograms per liter BOD = biochemical oxygen demand
Effluent shall contain no floating solids or foam visible in other than trace amounts.

NPDES Permit No. NCO021156 , 'F
SUPPLEMENT OT EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A. (2.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 6 %.
The permit holder shall perform at a minimum, guarterly monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or "North
Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
The tests will be performed during the months of February, May, August, and November. Effluent sampling for this
testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes.
If the test procedure, performed as the first test of any single quarter, results in a failure or ChV below the
permit limit, then multiple -concentration testing shall- be performed at a minimum, in each of the two following
months, as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
The chronic value for multiple concentration tests will. be determined using the geometric mean of the highest
concentration having no detectable impairment of reproduction or survival and the lowest concentration that does have a
detectable impairment of reproduction or survival. The definition of "detectable impairment," collection methods,
exposure regimes, and further statistical methods are specified in the "North Carolina Phase Il Chronic Whole Effluent
Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP313 for the
pass/fail results and THP313 for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the
following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 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, accurate, include all supporting chenucal/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature. 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 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 "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, monitoring will be
required during the following month. 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 / NPDES Unit
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES Permit No. NCO021156
INTRODUCTION
City of Mount Holly (also herein referred to as Mount Holly or the permittee) requires a National
Pollutant Discharge Elimination System (NPDES) permit for its Mount Holly Wastewater Treatment
Plant (WWTP) to dispose treated wastewater to the surface waters of the state. The permittee's 5-year
NPDES permit expired February 28, 2005 and they have requested renewal from the Division of
Water Quality (the Division). This Fact Sheet summarizes background information and rationale used
by the Division's NPDES Unit to determine permit limits and conditions. This document also
contains references to information sources relevant to this permit renewal (superscripted numbers in
order of appearance, See References).
FACILITY RECORDS REVIEW
Facility Description. The Mount Holly WWTP (Table 1) is a 4.0 MGD Publicly Owned Treatment
Works (POTW) utilizing: a manually -cleaned influent bar screen; dual grit chambers; Parshall flume
with instrumented flow measurement; a flow equalization basin; three aeration basins with
mechanical aeration; dual secondary clarifiers; dual chlorine contact chambers with gas disinfection;
four sludge holding tanks of which two are aerated; dechlorination; [also present but not in use — dual
sludge tanks, and duel sludge drying beds].'
Table 1. MountHolly WWTP
Facility Information
Applicant/Facilit Name
City of Mount Holly / Mount Holly WWTP
Applicant Address '
P.O. Box 406, 131 South Main Street
Facility Address
P.O. Box 406, Mount Holly, North Carolina 28210
Permitted Flow (MGD)
4.0 (-30 % domestic; —70% industrial)
Type of Waste 1,2,4Domestic
and industrial wastewater. Primary SIC Code 4952;
W W Code Prim 01; Treatment Unit Code 02003;
(residuals applied, Land Application Permit WQ0001863)
Facility/Permit Status ' L,4
Class IV, Major/ Renewal
Drainage Basin / County '
Catawba / Gaston County
Miscellaneous
Receiving Stream 1,2,4Catawba
River
Regional Office
Mooresville
Stream Classification '
WS-IV CA
State Grid /
USGS To o Quad
F 14 SE /
Mt. Holly, NC
303(d) Listed?
Not listed
Permit Writer
Karen Rust
Subbasin
03-08-33
Date:
October 25, 2006
Drainage Area (sq. miJ'
2,015
—. -
Lat. 35° 15' 55" Long. 81° 00' 35"
Summer 7Q10 (cfs) '
95
Winter 7Q10 (cfs) '
-•
30Q2 (cfs) 3,7716yy
Average Flow (cfs) '
3016
IWC (%) "
6
Fact Sheet
Renewal -- NPDES Permit N00021156
Page 1

Division records for the City of Mount Holly date from 1978. The most recent permit became
effective on April 1, 2002 and expires at midnight on February 28, 2005. The Division received
prompt documentation to renew (Standard Form A) on September 1, 2004.1,4
Waste Load Allocation (WLA). The Division prepared the last WLA in April 1996 and developed
effluent limits and monitoring considering an in -stream waste concentration (IWC) of 6 %. The
Division judges these limits and monitoring requirements to be appropriate for this renewal with the
exception of the additions and deletions listed below (see PERMITTING APPROACH SUMMARY).
Verifying Existing Stream Conditions. This facility discharges to the Catawba River,1,5 a Class WS-
IV CA stream within the Catawba River Basin. This portion of the Catawba River is not listed as an
"impaired" waterbody [not 303(d) listed].'
CORRESPONDENCE
Staff Report. Mooresville Regional Office (MRO) prepared a Staff Report dated October 28, 2004.
The MRO staff recommended "...that this permit be renewed...." The MRO also noted the
permittee's request to have a permit with phased flow; however, the permitee has not requested
speculative limits for 8.0 MGD and 12.0 MGD. Therefore, the permit can not be issued with phased
flow.
COMPLIANCE REVIEW
Pretreatment Compliance -- Notices of Violation (NOVs). Mount Holly's pretreatment program or
Long Term Monitoring Plan was approved in 1996 and was considered during the Reasonable
Potential Analysis.8 The facility has been sampling as required, and Pretreatment Audit Reports
indicate the facility has complied with the program.
Whole Effluent Toxicity (WET) Test. Quarterly monitoring results for Whole Effluent Toxicity
(WET) testing indicate "pass" for January 2002 through November 2005.9,10
DMR Instream and Effluent Data Review. The Division reviewed 47 months (January 2002
through November 2005) of Discharge Monitoring Reports (DMRs). DMR files appear regular,
thorough, and complete. Total flow for this time period averaged about 2.41 MGD or about 60 % of
permitted capacity. °
Instream Dissolved Oxygen and Temperature. Instream dissolved oxygen (DO) and temperature data
appear seasonally appropriate.10 Dissolved oxygen values are above and consistently compliant with
the Stream Standard minimum of 5 mg/L for 2003; however, 2004 and 2005 have minimum values
below 5 mg/L (Table 2). Because the DO of the stream decreased in 2004 and 2005, an effluent limit
of 5.0 mg/L will be added to the permit.
Table 2. Summer Instream Dissolved Oxygen (June through October)
,
1
vera e
nln�um ,4 ,
,.
2003
7.06 m
5.7 m
July
7.02 m
5.8 m
September
2004
5.4 m
3.2 m
June
.5.5 m
3.7 m
June
2005
6.2 m
3.5 m
July
6.4 m
3.7 m
June/July
Fact Sheet
Renewal -- NPDES N00021156
Page 21

Reasonable Potential Analysis (RPA). The Division conducted EPA -required RPA analyses on 47
months of data10 to determine the "reasonable potential" for identified toxicants and metals to exceed
instream Water Quality Standards. The Division compiled fourteen parameters of concern listed in
the previous permit and pretreatment documents: Table 4 summarizes changes based on Reasonable
Potential and sampling conducted under both the permit and the Pretreatment Program.
Table 4. Permit Renewal Action Based on Reasonable Potential Analysis
Parameter
Reasonable
Potential?
Previously
Monitored by
Permit?
Permit
Renewal Action
Arsenic
No
No
No Change
Cadmium
No
No
No Change
Chromium
No
No
No Change
Copper
Yes
Yes
No Change
Cyanide
Yes
Yes
No Change
Lead
No
No
No Change
MBAS
No
Yes
No Change
Mercury
No
No
No Change
Molybdenum
No
No
No Change
Nickel
No
No
No Change
Phenols
No
No
No Change
Selenium
No
No
No Change
Silver
Yes
No
Add monthly
monitoring
Zinc
Yes
Yes
No Change
Results suggest no "reasonable potential" for ten of the 14 parameters -analyzed. Four parameters
indicate "reasonable potential" to exceed Water Quality Stream Standards -- copper, cyanide, silver,
and zinc.
Because Copper, Silver, and Zinc have North Carolina State Action Levels only, they are to be
monitored only and not limited. Phenol monitoring was discontinued in the last permit renewal based
on reasonable potential, but relegated to the Pretreatment Program, as appropriate to Mount Holly's
Significant Industrial Users (SIUs). The monitoring requirement and effluent limit for cyanide will
be maintained as there is a reasonable potential to exceed the water quality stream standard. Monthly
monitoring for silver will be added to the permit as there is a reasonable potential to exceed the water
quality standard. The monitoring and limits will remain the same for all other parameters.
Fact Sheet
Renewal -- NPDES NCO021156
Page 3

PERMITTING APPROACH SUMMARY
Instream Monitoring Changes
Previous Requirements:
Recommended Changes:
Toxicity Testing
Previous Requirement:
Recommended Changes:
Effluent Monitoring
Recommended Changes:
Dissolved Oxygen, Conductivity, Temperature.4
No change recommended.
Quarterly Chronic Ceriodaphnia dubia @ effluent cons. of 6 % 4
No change recommended.
Add limit of 5.0 mg/L for Dissolved Oxygen.
Add monthly monitoring for Silver.
PROPOSED SCHEDULE OF ISSUANCE
Draft Permit to Public Notice: October 25, 2006
Permit Scheduled to Issue: December 15, 2006
NPDES UNIT CONTACT
If you have questions regarding any of the above information or on the attached permit, please
contact Karen Rust at [phone] ext. 361.
NAME: DATE:
Fact Sheet
Renewal -- NPDES NCO021156
Page 4

REASONABLE POTENTIAL ANALYSIS
VVVIVTP
NCO021156
Time Period Jan 2002 - Nov 2005
Ow (MGD)
4
7Q 10S (cfs)
95
701OW (cfs)
95
3002 (cfs)
716
Avg. Stream Flow, QA (cfs)
3016
Reeving Stream Catawba River
WWTP Class IV
IWC (%) @ 7010S 6.1265
Q 701OW 6.1265
Q 3002 0.8585
Q QA 0.2051
Stream Class WS-IV, CA
Outfall 001
Qw = 4 MGD
STANDARDS&
PARAMETER
TYPE
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC was/ t4 i At//
a a DOE ifur Prod Cw Agombb Cw
It)
Chronic Aaft
Acute: N/A
Arsenic
C
50
ug&
16 1
10.1
_nic-_ _ _
No_reasonable potential —_---_—_—_-----_—
_ uo
Cl: 5,824
Acute: NIA
0 0
NIA
Chronic: Error<ii?Type
•-----------------•—•-------
Acute: 15
Cadmium
NC
2 15
ug/L
16 0
1.0
No reasonable potential —•—•—•—•—_-----_—
—.—.--- ---
_ _ _
Chronic: 33.—
Acute: 1.022
Chromium
NC
50 1.022
ug/L
16 16
45.5
No reasonable potential -------_—•—•—_—_—
—•----- •--
_ _ __ _
Chronic: 816•—
Acute: 7
Copper
NC
7 AL 7.3
ug/L
73 73
33.5
_ _. _ _
Reasonable potential; maintain monitoring in permit -
—•---• ---- ----•—• - --
_
Chronic: 114-
Acute:
Acute: 22
Cyanide
NC
5 N 22
10
ug/L
159 1
44.1
_ _ - — --
Reasonable potential: maintain monitorng In permit —_—
-----• ------------ -
Chronic: 82
Acute: N/A
MBAS
NC
500 N
ug/L
16 16
1.140.0
—
Noreasonable potential —.—•—•—_—.-----_—
— ---_— —�
_ _ _
Chronic: 8.161
Acute: 34
Lead
NC
25 N 33.8
ug/L
16 0
1.5
Noreas_ona_blepotential —_—_—•—•—.—.—•—•—
-
_ _ ___ ___
Chrontc: 408
Acute: WA
Mercury
NC
12.000
ng/L
21 7
24.4250
_ _ _
No reasonable potential—_-------_—•—_—_—
------- ---
Chronic: i96--
Acute: NIA
Molybdenum
A
3,500
ug/L
1 16 1
125.1
_ _ _
No_reasonable potential --------- •-------
Chronic: 1,706,081
Acute: 261
Nickel
NC
88 261
ug/L
19 6
46.6
_ _ __ _ _
Noreas_ona_blepote_ntia_t-----•---•—•---__
Chronic: 1.436
Acute: NIA
Phenols
A
1 N
ug/L
22 11
232.9
No reasonable potential: has been removed from permit
_ _ _
Chronic: • _ 487
prevbusi7 but facility ES monitoring for LTMP
Acute: 56
Selenium
NC
5.0 56
ug/L
16 0
2.5
_ _ _ _—
No reasonable potential —
—�—•--- --_ —
Chronic: 82
Acute: 1
Silver
NC
0.06 AL 1.23
ug/L
16 1
37.0
Reasonable potential. but this Is an action level parameter
__
_ _ •— __ - _
Chronic: 1
Include monthly monitoring In the permit. with no limit
Acute: 67
Zinc
NC
50 AL 67
ug/L
73 73
193.5
Reasonable potential; maintain monitoring In permtt _
-- --• --— - — - — - — - — - - -- —
_ _ _ _ _
Chronic:. 816
• Legend: " Freshwater Discharge
C = Carcinogenic
NC = Non -carcinogenic
A = Aesthetic
npdes rpa Mt Holly, rpa
109=006

Table 1. Project Information
Facility Name
WWTP Grade
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q1Os (cfs)
7Q1Ow (cfs)
30Q2 (cfs)
QA (cfs)
Time Period
Data Source(s)
WWTP
IV
NCO021156
001
4.0
Catawba River
WS-IV, CA
95.0
95.0
716.0
3016
Jan 2002 - Nov 2005
DMRs
ParO1
ParO2
Par03
Par04
ParO5
ParOG
Par07
Par08
Par09
Par10
Parl 1
Par12
Par13
Par14
Par1 f
Table 2. Parameters of Concern
Name Type Chronic Modifier Acute PQL Units
Arsenic
C
50
ug/L
Cadmium
NC
2
15
ug/L
Chromium
NC
50
1022
ug/L
Copper
NC
7
AL
7.3
ug/L
Cyanide
NC
5
N
22
10
ug/L
MBAS
NC
500
N
ug/L
Lead
NC
25
N
33.8
ug/L
Mercury
NC
12
ng/L
Molybdenum
A
3500
ug/L
Nickel
NC
88
261
ug/L
Phenols
A
1
N
ug/L
Selenium
NC
5
56
ug/L
Silver
NC
0.06
AL
1.23
ug/L
Zinc
NC
50
AL
67
ug/L
npdes rpa Mt Holly, input
10/23/2006

c
NCO021156
Facility: Mt Holly WWTP
Discharge to: Catawba River
Stream class and index #: WS-IV CA
Residual Chlorine
Ammonia as NH3
(summer)
7Q10 (CFS) '
95
7010 (CFS)
95
DESIGN FLOW (MGD)
4
DESIGN FLOW (MGD)
4
DESIGN FLOW (CFS)
6.2
DESIGN FLOW (CFS)
6.2
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
UPS BACKGROUND LEVEL (UG/L)
0
UPS BACKGROUND LEVEL (MG/L)
0.22
IWC (%)
6.13
IWC (%)
6.13
Allowable Conc. (ug/1)
277.48
Allowable Concentration (mg/1)
12.95
maximum=28 ug/I
minimum = 2
Ammonia as NH3
(winter)
7Q10 (CFS)
95
Fecal Limit
200/100ml
DESIGN FLOW (MGD)
4
Ratio of 15.3 :1
DESIGN FLOW (CFS)
6.2
STREAM STD (MG/L)
1.8
UPS BACKGROUND LEVEL (MG/L)
0.22
IWC (%) -
6.13
Allowable Concentration (mg/1)
26.01
minimum = 4

. NPDESINon-Discharge Permitting Unit Pretreatment Information Request Form
d) & NPDES, OR NONDISCHARGE PERMITTI G UNIT COMPLETES THIS PART:
Date of Request -dw #0006 Z' c4, Q G
of .
NA
Facility
Town of Mount Holly WWTP
Permit #
NC0021156
Region
Mooresville
Requestor
Karen Rust
Pretreatment �ewns Dana Folley ext. 523) C-6
Contact Q-M-Tew80)
N-Z Towns- Deborah Gore (ext. 593)
ENTS TO PRETREATMENT UNIT:
PRETREATMENT UNIT COMPLETES THIS PART:
Status of Pretreatment Program (circle all that apply)
1) the facility has no SIU's and does have a Division approved Pretreatment Program that is INACTIVE
2 the facility has no SIU's and does not have a Divislo roved Pretreatment Program
3) the facility has jeH"evelepirtgj a Pretreatment Pro ram
Is Full Program with LTMP or 3b) is Modified Program with STMP
4) the facility MUST eve op a Pretreatment Program - Full Modified
5) additional conditions regarding Pretreatment attached or listed below
Flow
Industrial
Permitted MGD Actual MGD STMP time frame:
a , o3 1. 0 S (a 005Y -Q) most recent
Domestic
X 13e? 00Lt lW/f next cycle
Pollutant
L
Check List
POC due to
(S)
NPDES(Non-
STMP
LTMP
T
Discharge
Required
Required by
Frequency at
Frequency at
MP
Permit Limit
by EPA'
603 Sludge"
POC due to SIU"
Sitespecific POC (Provide Explanation)—
effluent
efflumt
BOD
%/
11
4
Q M
✓
TSS
V
L
4
101 M
NH3
4
JQJM
Arsenic
VL
4
Q M
4
1 Q Im
C o iian
4
Q M
o e �
4
Q M
V
Cyanide
L
4
Q
r,.- - _ _
L-
4
Q
Mercury
V
L_
4
Q
Molybdenum
V
L
4
Q
Ni0 `ei ' - W
V
L
4
Q
Silver
4
Q
Selenium
L
4
Q
Zinc F
--
4
LQ M
aS
L-
-
4
Q M
Q M
✓
p +C
4
Q
4
Q M
_..-
4
QM
4
QM
,Always in the LTMP all LTMP/STMP effluent data
"Only In the LTMP if the POTW land applies sledge r
Only in LTMP white the SIU is connected to the POTW- On DMRS9
Only in LTMP when the
pollutant is a specific concern to the POTW (ex•Chloddes for a POTW who accepts Textile waste) Yes
o- Quarterly
M-Monthly - _ _
No
(attach data)
-
Comments h�YI t 5e 0 v1 SGt L! S .Sd l� G available in spreadsheet?
P 5 2 r it .0— C A e Ili 0 Yes
No
t I f. mod' Savhr21lk1ej At w w fP
version 10/8/03
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Revised: August 4, 2000 t� h e h d I 10 + •'I j'� - -L J
CA �• -theme a /� Isv� hole w�e�-}'lne� o ��e�o�5
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•
AFFIDAVIT OF INSERTION OF ADVERTISEMENT
The Gaston Gazette
Gastonia, NC
Gaston County
The Gaston Gazette does certify that the advertisement for:
PUBLIC NOTICE
North Carolina Environmental Management
Commission/NPDES Unit
Measuring 10.24 inches appeared in The Gaston Gazette, a newspaper published in
Gaston County, Gastonia, NC, in issues:
October 27, 2006
Sworn to and subscribed before me this day of , 2006
rulIuV N iWt
SWSORVORTH 7x-;uA�V ; erndplRs1 eingFe
lmitCOUNAf, ,;s n1, p
r,,ppor
ENV! iOfNENTAM
trifot `
AGEMENTtU[ 15StOW:' �natloit
;'COnIe'jtsed to;de-
NPDESterrnine`bortitorfietresent
.�rd r "` n the�draft peririit`are avail-;, R. Renee Philbeck, Notary Public
161�:; i�IL,, D E VICE . ). .,R � , �. ,
able u n i!°�st and
c0 �°' .der M Commission Expires March 5, 2008
RALEIGi�, NC 29 fi617Y,,- �m8nf �� �the,,00sts a�,;�epro-; y p
.dNctic�.Malti root ;;ts
NOTIFICATIONS ;OF N,- ! �.i °f;�+guests If4 b
TENT; TO --is 'A I �etiort to ��a G� DqM
NPDE � A3j'E A ER ; '` of •Water; I at e,
_ty
PERMIT7. t. shave addressor calf _ e .
' ► .a �°- r .�� �g� :, Point Source ,•�r�anch�it'
j O�rith'e�.}� ` '�`�stfr`�iorough : �9�8 �93-�83 =eodenston �,
staff review and •'app�lcation 520 Iea2°J ji Lucie e j
of:�NC �GMdral AStat H : NPD S .=1pem� i mbar';
14321, Nbild Iaw _9MM" (f��:0021 56) in f, '°o
and otherativful standard's '�� ed per
and regulations ,theiSrth: sor�ettsa;trthe�D�
Carotins ,".'ORIr'di e'r a1to
r anage _ erif,� Car miss o``rl' i f r" _ 8
Pro poses�to,issus a no I 8
al >.tutBRt. p�3aha�etVY88n' QT .
E!imtnation 's stem gym• gyp•'
view o (rr�orreattorl �l
ev,�ater d s` �.
charge ` to a per-, effe.... .
sons(s) Asted" beLaw'`o-; TheyCDe ounE 1`ay `
�_
We .45 ✓day%s frpmithe°pub• (PO. Booc•. iiittllaln
llsh oats of �.,M
tits notice. d as Stree(,ount �}fotly, ON.C:
�;� iro,,-rf_, '-11 gp 28120)$F�td4poldd ia�:�re.ri
Written oor�mer�ts regard=
Ing the` proposed.permi 'mil:
newel ?off NPDES9Nf0nit,-�
NCOW1156 f6r., - e Mod it l
be aooepted urttll �30 flays
after:the public x date of this
Holiji WWTP' n Gaston
County` This *rm1tted , fa:
"treated
notice: Ali { vomme sr s:,
cifitti scharges -
cenred prior to'that Mate are
con%dgoreod . "9 two `firiat ¢ '
wastewater to the-Catawbd
Rlver' ln'the Catav�ba� Rives
ter atior►q�—, rdlno ':ttie •
Basin<<Curreritiy, ;ttotal! re= :
sidual c lottne artd �yatttde'.
Proposed., rmft jhe Dl•
rector of," D sion of
are water Yaua[fty 'I�mited s
t4
Water-: Quatity may deride,
to hold a pubQd meeting "for
Thls dlscha�e� may .affect�-
,,.- ,
future;,a[tacatfons �tni'th[s
the`pFoposed permit sho�ild
portion oftle�, 0._ , Riv-
the,,DM on'receive a
er Basin,.,Y
nifcant degree of pilbltc ln-
terest.
1C-October 27,.20a6

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
October 251 2006
MEMORANDUM
To: Britt Setzer
NC DENR / DEH / Regional Engineer
Mooresville Regional Office
From: Karen Rust
NPDES Eastern Unit
Subject: Review of Draft NPDES Permit NCO021156
City of Mount Holly WWTP
Gaston County
IT
• •
NC ENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
D ��j"� a��
LS
r 4
OCT
Please indicate below your agency's position or viewpoint on the draft permit and return this form by December 1,
2006. 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.
F1Concurs with issuance of the above permit, provided the following conditions are met:
F] Opposes the issuance of the above permit; based on reasons stated below, or attached:
a
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 919 733-5083, extension 361 (fax) 919 733-0719
VISIT US ON THE INTERNET @ http.//h2o.enr.state.nc.us/NPDES Karen.Rust@ ncmail.net

SOC PRIORITY PROJECT: No
To: NPDES Unit
Water Quality Section
Attention: Carolyn Bryant
Date: October 28, 2004
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Gaston
NPDES Permit No.: NCO021156
MRO No.: 04-87
PART I - GENERAL INFORMATION fv' 2SOURCE
1. Facility and address: Mount Holly WWTP
City of Mount Holly NOV131 South Main Street
Mount Holly, NC 28210 DENR POINT
s,.
2. Date of investigation: October 28, 2004
3. Report prepared by: Michael L. Parker, Environmental Engineer II
4. Person contacted and telephone number: Mr. Don Price, Utility Director; Tony Stilwell,
ORC, (704) 8274261 (WWTP)
5. Directions to site: From the jct. of Hwy. 273 and Tuckaseegee Road in the City of Mount
Holly, travel southeast on Tuckaseegee Road = 0.55 mile to the jct. With Broome Street.
Turn left (east) on Broome Street, and the WWTP is located at the end of this road.
6. Discharge point(s), List for all discharge points: -
Latitude: 350 15' 55"
Longitude: 810 00' 35"
Attach a USGS Map Extract and indicate treatment plant site and discharge point on map.
USGS Quad No.: F 14 SE
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 WWTP site lies adjacent to the
Catawba River, however, the existing WWT units appear to be above the river's flood
plain elevation.

Page Two
9. Location of nearest dwelling: Approx. 1000+ feet from the WWTP site.
10. Receiving stream or affected surface waters:
a. Classification: WS-IV, CA
b. River Basin and Subbasin No.: Catawba, 030833
C. Describe receiving stream features and pertinent downstream uses: The discharge
enters the main segment of the Catawba River, which has excellent flow. The
River is used for primary recreation and as a water supply for the Town of
Belmont.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater: 4.0 MGD (Design Capacity)
b. What is the current permitted capacity: 4.0 MGD
C. Actual treatment capacity of current facility (current design capacity): 4.0 MGD
d. Date(s) and construction activities allowed by previous ATCs issued in the
previous two years: ATC No. 021156AOI was issued on January 30, 2003 to add
a flow proportional dual gas chlorine feed system and a sulfur dioxide feed
system.
e. Description of existing or substantially constructed WWT facilities: The existing
WWT facilities consist of a manually cleaned influent bar screen followed by dual
grit chambers, instrumented flow measurement, a flow equalization basin, three
aeration basins with mechanical aeration, dual secondary clarifiers, dual chlorine
contact chambers with gas disinfection, dechlorination, dual aerated sludge
holding tanks, dual sludge holding tanks (formerly clarifiers), and dual sludge
drying beds (not in use).
f. Description of proposed WWT facilities: There are no proposed WWT facilities at
this time.
g. Possible toxic impacts to surface waters: This facility has a consistent record of
passing toxicity tests. Chlorine is added to the waste stream, however,
dechlorination is provided.
h. Pretreatment Program (POTWs only): Approved.
2. Residual handling and utilization/disposal scheme:
a. If residuals are being land applied specify DWQ Permit No. WQ0001863.
Residuals Contractor: Bio-nomic Services
Telephone No. [phone]
b. Residuals stabilization: This facility produces a Class B residual.

Page Three
Treatment plant classification: Class III (no change from previous rating).
4. SIC Code(s): 4952 Wastewater Code(s): 01 MTU Code(s): 02003
PART III - OTHER PERTINENT INFORMATION
Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? Public monies were used in the construction of this facility.
2. Special monitoring or limitations (including toxicity) requests: None at this time.
Important SOC/JOC or Compliance Schedule dates: This facility is neither under and
SOC nor is one being proposed.
4. Alternative analysis evaluation: There is no known alternative to a discharge.
PART IV - EVALUATION AND RECOMMENDATIONS
The City of Mount Holly requests renewal of the subject NPDES permit. There have
been no changes to the permit since it was last reissued, however, additional W WT facilities
have been added (See Part II, No. 1(d)).
Recently, Mount Holly contacted the Division regarding a possible expansion of the
WWTP up to 6.0 MGD. This request stemmed from a discussion Mount Holly had with the City
of Charlotte regarding the possibility of pumping wastewater generated in Charlotte, across the
Catawba River to the Mount Holly W WTP for treatment. In a letter dated February 20, 2004,
speculative limits were provided to Mount Holly for a possible expansion from the current 4.0
MGD capacity to 6.0 MGD. Subsequent to the February 20th letter, Mount Holly had additional
discussions with Charlotte regarding the possible acceptance of flow. As a result of these
discussions, Mount Holly has requested that the subject permit be reissued with tiered limits
beginning at the current 4.0 limit, and then adding limits for 8.0 MGD, and ultimately 12.0
MGD.
Pending receipt and approval of the draft permit and fact sheet, it is recommended that
the permit be renewed with the tiered limits as requested above.
Signature of Report Preparer gate
Water Quality Rgional Supervisor Date
h:\dsr\dsr04\mrholly.dsr

i
aU�T
'�` ► y° CITY Of MOUNT HULLY
131 South Main Street
Post Office Box 406
Mount Holly, NC 28120
704-822-2939
704-822-2933 fax
www.mtholly.us
CMAIL
August 28, 2004
Mr. Charles Weaver
NCDENR DWQ
NPDES Permit Section
1617 Mail Service Center
Raleigh, NC 27699-1617
UTnin ES DEPARTMENT
WATER TREATMMT
WASTEWATER TREATMENT
STOI,MWATL�R
LOGY
I� t
is
Subject: Renewal of NPDES Permit No: NC0021156, City of Monet Holly, Gaston County
Dear. Mr. Weaver.
Please find attached to this letter the completed application for renewal of the subject facility, which the city is
submitting to request renewal of our NPDES permit. We are using the new 2A form and it is our first time with
it, so please reply if we need to make corrections or additions.
The city would also like to request this permit be issued as a tiered permit. This would allow for upgrades to the
facility as needed or required by the .permitting authority. The tiered request we are asking for is renewal at our
current floe rate of 4 MGD, a tier at 8 MGD, and a final tier at 12 MGD. Should you have questions, or need
additional information please contact us at [phone].
Sincerely,
Donald.R..Price
Utility Director
CC: David Kraus
Tony Stilwell

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Mount Holly Wastewater Treatment Plant, NCO021156
Permit Renewal
Catawba
I SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTMAL USER DISCHARGES AND RCRAICERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRACERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.I. Pretreatment program. Does the treatment works have, or is subject at, an approved pretreatment program?
® Yes ❑ No
F2. Number of Significant industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs. 2
b. Number of ClUs. 2
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each Siu. If more than one SIU discharges to the treatment works, copy questions F.3 through F.6 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: American & Efird Inc
Mailing Address: P.O. Box 507
Mount Holly, NC. 28120
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Textile
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
aischmfge.
Principal product(s): Textile
Raw material(s):
F.S. Flow Rate.
a. Process wastewater flow rate. Indicate the average dairy volume of process wastewater discharge into the collection system In gallons per
day (gpd) and whether the discharge is continuous or intermittent.
.676 gpd (x continuous or intermittent)
b. Non-precess wastewater flax rate. Indicate the average daily volume of ran-pmcess wastewater flow discharged Into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the follumng:
a. Local limits 0 Yes [J No
b. Categorical pretreatment standards —M Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Te x+'I I e

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Mount Holly Wastewater Treatment Plant, NCO021156
Permit Renewal
Catawba
F.B. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes © No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.S. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes E(No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck ❑ Rail ❑ Dedicated. Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) Ff No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the nod five years).
F.14. Pollutants. List the hazardous constituents that are reoeived (or are expected to be received). Include date on volume and concentration, if
known. (Attach additional shoals if necessary.)
FAA. Waste Treatment
a. Is this waste treated (or will be treater) prior to entering the treatment works?
❑ Yes ❑ No
if yes, describe the treatment (provide irdonnabon about the removal efriciency):
b. Is the discharge (or will the discharge be) continuous or intermittent? - -
❑ Continuous ❑ IMemildent It intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Mount Holly Wastewater Treatment Plant. NCO021156
Permit Renewal
Catawba
SUPPLEMENTAL APPLICATION INFORMATION
PART FANDUSTRIAL USER DISCHARGES AND RCRAlCERCLA-WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject at, an approved pretreatment program?
Lr Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
C. Number of non-categoricai SIUs. 2
d. Number of ClUs.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Buckeye Mtt Holly LLC
Mailing Address100 Buckeye Drive
Mb Holly NC 28120
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Non -Woven
F.5. Principal Product(s) and Raw Materiat(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Non -Woven Fiber
Raw materiai(s):
F.B. Flow Rate,
C. Process wastewater Bow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
06$ gpd (x continuous or intermittent)
d. Non -process wastewater flow rate. Indicate the average daily volume of Iron -process wastewater Bow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a, Local limits ® Yes ❑ No
b. Categorical pretreatment standards ix] Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
NomWovens
NPDES FORM 2A Additional Information

FACKJW NAME AND PERMIT NUMBER:
PERMR ACTION REQUESTED:
RIVER BASIN:
Mount Holly Wastewater Treatment Plant, NC0021156
Permit Renewal
Catawba
F.B. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or wntribuled to airy problems (e.g.,
upsets, interference) at treatment works in the past three years?
�th/e
❑ I� Yes No if yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.S. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rag or dedicated pipe?
❑ Yes L�eNo (ge to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck ❑ Reg ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount U Y
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATIOWCORRECTNE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12 "Remediation Waste. Does the treatment work currerdly (w has it been notified "it wig) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) [r No
F.13. Waste Origin. Describe the ske and type of facility at which the CERCLA/RCRNw other remedial waste originates (or is excepted to origniate in
the nod fare years).
FA4. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known_ (Attach additional sheets if necessary)
F.15. Waste Treatment.
C. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatmuent (provide information about the removal efficiency):
d. Is the discharge (w will the discharge be) continuous w intemriCent?
❑ Continuous ❑ Intermittent B intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
i
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RNER B0.51N:
Mount Holly Wastewater Treatment Plant, NCO021156
Permit Renewal
Catawba
SUPPLEMENTAL APPLICATION INFORMATION
PART 'F: NDUSTR)AL USER DISCHARGES AND RCRAICERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
FA. Pretreatment program. Does the treatment works have, or is subject at, an approved pretreatment program?
VYes (] No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
e. Number of non -categorical SIUs. 2
f. Number of ClUs.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions 1,.3 through F.8 and
provide the information requested for each SIU.
E3. Significant Industrial User information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Clariant Corporation
Matting Address: 625 East Catawba Avenue
P.O. Box 669246 Mt. Holly, NC. 28120
F.4. Industrial Processes. Describe all the industrial processes that affect of contribute to the SIU's discharge.
Domestic & Industrial waste as well as affected groundwater, Process and non -process wastewater covered by 40CFR414 and 40CFR455 air
scrubbers, cooling water blow down etc.
F.S. Principal Product(s) and Raw Material(s). Describe a8 of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s):
Raw material(s): -._..
F.S. Flow Rate.
e. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
105 gled (x continuous or intermittent)
I. Non process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (9pd) and whether the discharge is continuous or intormi tent.
gpd ( continuous or intermittent)
17.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes 0 No
b. Categorical pretreatment standards ® Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
OCPSF
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RNER BASIN:
Mount Holly Wastewater Treatment Plant, NC002t 156
Permit Renewal
Catawba
F.S. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU mused or contributed to any problems (e.g..
upsets, interference) at the treatment works in the past three years?
fj Yes S?r No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment waft receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes ❑ No (go to F.12)
F.19. Waste transport Method by which RCRA waste is received (check all that apply):
C Truck ❑ Rail ❑ Dedicated Pipe
RIC Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Arrunint Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (a has t been notified that it will) receive waste from remedial activities?
❑ Yes (complete F13 through F.15.) [ No
F.13. Waste Origin. Describe the she and type of facility at which the CERCLAIRCRAIor other remedial waste originates (or is excepted to origniate in
the next fire yeas).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, it
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment.
e. Is this waste treated (or will betreated) prior to entering the treatment works?
❑ Yes CI No
If yes, describe the treatment (provide information about the removal efficiency):
I. Is the discharge (or will the discharge be) continuous or intennttem?
❑ Continuous ❑ Intemrtert If intermittent, describe discharge schedule.
END OF PART F.
j REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
II OF FORM 2A YOU MUST COMPLETE
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Mount Holly Wastewater Treatment Plant, NCO021156
Permit Renewal
Catawba
SUPPLEMENTAL APPLICATION INFORMATION
PART FANDUSTRIAL USER DISCHARGES AND RCRNCERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject at, an approved pretreatment program?
121"Y. ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
g. Number of noncafegaical SIUs. 2
It. Number of ClUs.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.6 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of. each SIU discharging to the treatment works. Submit additionalpages
as necessary.
Name: Freightliner Trucks
Mailing Address: ISM North Main Street
Mount Holly NC. 28120
FA. Industrial Procesaes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Truck Manufacturing
F.6. Principal Product(s) and Raw Materiai(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Trucks
Raw material(s):
F.6. Flow Rate.
g. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
._03 gpd (x continuous or intermittent)
h. Non -process wastewater flow rate. indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
_ gpd ( cardinuuus or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits © Yes ❑ No
b. Categorical pretreatment standards 0 Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Truck MFC.
NPDES FORM 2A Additional Information

FACLITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Mount Holly Wastewater Treatment Plant, NCO021156
Permit Renewal
Catawba
F.S. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contntMed to my Problems (s-g.,
upsets, intederenme) at the treatment works in the pad three yews?
❑ Yes Er No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.S. -RCRA Does the treatment works receive or has it m the past three years renewed RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes 0 No (go to F.12)
F.10. Waste transport Method by which RCRA waste is received (cheek all that apply):
❑ Truck ❑ Rail ❑ Deriketed Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATIONICORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste Does the treatment works currently (orr has it been notified that it wild receive waste from remedial activities?
E) Yes (complete F.13 through F.1s) MIN,
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA7RCRAlor other remedial waste originates (or is excepted to origniate in
the next five years).
F.16. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration. If
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment
g. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes El No
If yes, describe the treatment (provide information about the removal efficiency):
h. Is the discharge (w will the discharge be) continuous or intermittent?
0 Continuous ❑ Intermittent If intermittent, describe discharge schedule. '.
END OF PART F.
REFER TO TH= APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
NPDES FORM 2A Additional Information