NC0089109_Final Permit_20200611

Permit NCO089109
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
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,
American Zinc Products, LLC
is hereby authorized to discharge wastewater from a facility located at
American Zinc Products, LLC
Forest City
Rutherford County
to receiving waters designated as the Broad River in the Broad River Basin in accordance with
effluent limitations, monitoring requirements, and other applicable conditions set forth in
Parts I, 1I, III and IV hereof.
This permit modification shall become effective July 1, 2020.
This permit and authorization to discharge shall expire at midnight on July 31, 2023.
Signed this day June 9, 2020.
S el Smith, c o
lsion of Water Resources
I'fy Authority of the Environmental Management
Commission
Page 1 of 9

Permit NCO089109
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.
American Zinc Products, LLC is hereby authorized to:
1. Operate the process effluent discharge system including the following
components:
Automatic sampler
Instrumented flow measurement, and
Diffuser
The facility is located near Forest City, Rutherford County; and
2. Discharge effluent from this location as specified on the attached snap into the
Broad River which is classified WS-IV waters in the Broad River Basin.
Page 2 of 9

Pexnit NCO089109
Part I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
115A NCAC 02B .0400 et seq.. 02B .0500 et seq.] Gmde 11 PCWPCS [15A NCAC 08G .0302]
During the period beginning on the effective date of the permit and lasting until expiration, the Penmittee
is authorized to discharge from outfall(s) serial number 001. Such discharges shall be limited and
monitored by the Permittee asspecified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUREMENTS
Monthly
Average
Daily
Maximum
Measureme
nt
Frequency
Sample
Type
Sample
Location
Flow (MGD)
0.98
Continuous
Recording
I or E
Total Suspended Solids,
mg/L
2/Month
Composite
E
NIa-N, mg/L
Quarterly
Composite
E
Total Aluminum, µg/L
Quarterly
Composite
E
Total Antimony, µg/ L
Quarterly
Composite
E
Total Arsenic, µg/L
Quarterly
Composite
E
Total Cadmium
350.0 µg/L
2,143.00 µg/L
2/Month
Composite
E
Total Cadmium
90.4 µg/Lf,
454.4 µg/L^
2/Month
Composite
E
Chlorides, mg/L
Quarterly
Composite
E
Chromium (VI), µg/L
Quarterly
Composite
E
Total Cobalt, µg/L
Quarterly
Composite
E
Total Copper, µg/L
Quarterly
Composite
E
Total Fluoride, mg/L
Quarterly
Composite
E
Total Iron, mg/L
Quarterly
Composite
E
Total Lead, µg/L
2/Month
Composite
E
Total Nickel, µg/L
Monthly
Composite
E
Total Tin, µg/L
Quarterly
Composite
E
Total Zinc, µg/L
2/Month
Composite
E
pHl
6.0 s pH 5 9.0
Daily
Grab
E
Chronic Toxicitycc,
Quarterly
Composite
E
Turbidity)
Monthly
Grab
NOTES:
1. Sample Locations: I - Influent, E - Effluent, U - upstream (50 ft. upstream of the
discharge), D - downstream (50 ft. downstream of the discharge).
2. The pH shall not be less than 6.0 standard units or greater than 9.0 standard units.
3. Chronic Toxicity (Ceriodaphnia) P/FC: 0.99%; Jan., April, July, and October; See
condition A. (2.) of the Supplement to Effluent Limitations and Monitoring Section of
this permit.
4. The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50
NTU. If the instream turbidity exceeds 50 NTU due to natural background conditions, the
discharge cannot cause turbidity to increase in the receiving stream. Therefore, if the effluent
measurement exceeds 50 NTU, the Permittee shall Sample upstream and downstream
turbidity in the receiving waterbody, within 24 hours, to demonstrate the existing turbidity
level in the receiving waterbody was not increased. All data shall be reported on the DMRs.
(See 15A NCAC 2B .0211 (21)).
NTU - Nephelometric Turbidity Unit.
Page 3 of 9

Permit NCO089109
5. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's
eDMR application system. See Special Condition A. (3.).
6. These limits become effective on December 1, 2027. Please see A. (6.) for Compliance
Schedule.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM VISIBLE IN OTHER THAN
TRACE AMOUNTS.
A. (2.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QUARTERLY)
[15A NCAC 02B .0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Cerfodaphnia dubfa at an effluent concentration of 0.90/a.
The permit holder shall perform at a minimum, auarterlu monitoring using test procedures
outlined in the 'North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised
December 2010, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure" (Revised- December 2010) or subsequent versions. The tests will be
performed during the months of January, April, July and October. 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.
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 -December 2010) 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 TOP311 for the pass/fail results and THP38 for the Chronic Value. Additionally,
DWR Form AT-3 (original( is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Or, results can be sent to the email, ATForms.ATBCaancdenr.aov
Completed Aquatic Toxicity Test Forms shall be filed with the Water 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 chemical/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 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 Water Sciences Section at the address cited above.
Page 4 of 9

Permit NCO089109
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month. Assessment of toxicity compliance is
based on the toxicity testing quarter, which is the three-month time interval that begins on the
first day of the month in which toxicity testing is required by this permit and continues until the
final day of the third month.
Should any test data from this monitoring requirement 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, minimum control organism reproduction, and appropriate
environmental controls, shall constitute an invalid teat 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.
A. (3.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b))
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
program reports. 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 11 of
this permit (Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D.(2.)
• Section D. (6.)
• Section E.(5.)
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements rSuversedes Section D. 12.1 and Section E. I6.1 (an
The permittee shall report discharge monitoring data electronically using the NC DWWs
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:
NC DEQ / 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 DM forms (MR 1.
Page 5 of 9

Permit NC0089109
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 DM R 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.
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 Division (see 'How to Request
a Waiver from Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the
time of each electronic submission. The permittee should use the EPA's website resources to
identify the initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the
entity (EPA or the state authorized by EPA to implement the NPDES program) that is the
designated entity for receiving electronic NPDES data (see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool
for each type of electronic submission and for each state, Instructions on how to access and
use the appropriate electronic reporting tool will be available as well. Information on EPA's
NPDES Electronic Reporting Rule is found at:
httns: / /www.federalregister.gov /documents / 2015 / 10 / 2212015-24954 / national-pollutant-
discharae-elimination-system-nodes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the `Reporting Requirements section
above.
3. How to Request a Waiver from Electronic Reportia2
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:/ /dea.nc.gov/about/divisions/water-resources/edmr
Page 6 of 9

Permit NCO089109
4. 8ianatory Requirements [Sunvlements Section S. (11.) Lb,[ and 8mpemedes Section B.
ill.) ld[1
All eDM Rs submitted to the permit issuing authority shall be signed by a person described in
Part II, Section B. (11.)(a) or by a duly authorized representative of that person as described in
Part 11, 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:
http://deg.ne.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall
make the following certification [40 CPR 122.221. NO OTHER STATEMENTS OF
CERTIFICATION WILL BE ACCEPTED:
7 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 forgathering 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. "
S. Records Retention 18uvnlements Section D. I6.j]
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].
A. (4.) FISH TISSUE MONITORING
[G.S. 143-215.1(b)]
The facility shall conduct fish tissue monitoring once during the permit cycle and submit the results
with the NPDES permit renewal application. The objective of this monitoring is to evaluate potential
uptake of pollutants by fish tissue near the facility's discharge. The parameters analyzed in fish
tissue shall be arsenic, cadmium, and zinc. The monitoring shall be conducted in accordance with
the sampling plan approved by the Division. The plan should be submitted to the Division within
180 days from the effective date of the permit modification. Upon approval, the plan becomes an
enforceable part of the permit.
Copies of all the study plans, study results, and any other applicable materials should be
submitted to:
1) Electronic Version Only (pdf and CD)
Division of Water Resources
WQ Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
2) Electronic Version (pdf and CD) and Hard Copy
Division of Water Resources
Water Sciences Section
1621 Mail Service Center
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Permit NCO089109
Raleigh, NC 27699-1621
A. (5.) PRIORITY POLLUTANT ANALYSIS
[G.S, 143-215.1(b)J
The Permittee shall perform one Effluent Pollutant Scan for all parameters listed below. The analytical
methods shall be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine
whether parameters are present in concentrations greater than applicable standards and criteria.
Unless otherwise indicated, metals shall be analyzed as "total recoverable."
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/ Nitrite
Kjeldahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (EPA Method 1631E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile ornautic compounds
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
III-dichloroethane
1,2-dichloroethane
Trans-1,2-dichloroethylene
1,1-dichloroethylene
1.2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2.2-tetrachloroethane
Tetrachloroethylene
Toluene
1, 1. 1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene.
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo (a,h) anthrace ne
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1, 2-diphe nylhydrazine
F'luoranthene
Fluorene
2-nitrophenol
Hexachlorobenzene
4-nitrophenol
Hexachlorobutadiene
Pentachlorophenol
Hexachlorocyclo-pentadiene
Phenol
Hexachloroethane
2,4,6-trichlorophenol
1ndeno(1,2,3-cd)pyrene
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis(2-chloroethoxy)
methane
lsophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitro sodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2, 4-trichlorobenzene
Reporting. The effluent pollutant scan shall be performed once during the permit cycle and test
results shall be submitted to the Division within 270 days of the sampling.
Page 8 of 9

Permit NCO089109
A. (6.) CADMIUM COMPLIANCE SCHEDULE
[G.S. 143-215.1(b)]
Activity
Description
Deadline
1.
Commence production of Zinc at Mooresboro Facility.
June 1, 2020
2.
Ramp -up production to 750%.
December 1, 2020
3.
Stabilize plant operation and commence evaluation of permit
June 1, 2021
compliance.
4.
Complete evaluation. period.
June 1, 2022
5.
prepare a Preliminary Engineering Report (PER) of process
December 1, 2022
alternatives and/or pollution prevention/waste minimization
(parallel with activity 4)
alternatives designed 4o achieve compliance. This report would
include the results of the compliance evaluation. Submit to DWR
for review and comment.
8.
Agency review and addressing comments
February 1, 2023
7.
Bench scale test work of process alternatives (start in parallel
April 1, 2023
with Activity 61.
8.
Evaluate business case and funding requirements for
April 1, 2023
technically suitable alternative(&).
(parallel with activity 7)
9.
Complete pilot test work for selected technology option(s) and
August I, 2023
final technology selection. Develop a summary of the. results of
this evaluation. Submit summary to DWR for review.
10,
Agency review and addressing comments
October 1, 2023
11,
Detailed engineering and design of selected option. Submit to
February 1, 2024
DWR for comment.
12.
Agency review and addressing comments
April 1, 2024
13.
Prepare capital project application and secure funding for
June 1, 2024
selected option, obtain building permits and all needed
(much of this work will be done in
approvals for implementation.
parallel with activities 11,12)
14.
Project implementation, including design completion,
June 1, 2025
procurement and construction.
is.
Commission and ramp -up.
June 1, 2026
16.
Stabilize operation and evaluate performance.
December 1, 2026
17,
Make necessary final modifications to optimize and obtain full
August 1, 2027
operational status.
18.
Achieve full compliance.
December 1, 2027
Page 9 of 9