NCG021049_Application_20241101

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FOR AGENCY USE ONLY
NCG02 1Q ^w `/
Assigned to: �.1 MN
ARO FRO O RRO WARO WIRO WSRO
Division of Energy, Mineral, and Land Resources Land Quality Section
National Pollutant Discharge Elimination System
NCG020000 Notice of Intent
This General Permit covers STORMWATER AND/OR WASTEWATER DISCHARGES associated with activities under
SIC(Standard Industrial Classification)Code 14[Mineral Mining Industry]except for:peat mining, coal mining,
metal mining, oil and gas extraction, tourist gem mines, NCDOT borrow pits, in-stream sand mining, and
discharges from mining operations which are intermixed on site with stormwater from concrete operations. You
can find information on the DEMIR Stormwater Program at deq.nc.gov/SW.
Directions: Print or type all entries on this application. Send the original,signed application with all required
items listed in Item (9) below to: NCDEMLR Stormwater Program,1612 MSC, Raleigh, NC 27699-1612. The
submission of this application does not guarantee coverage under the General Permit. Prior to coverage under
this General Permit a site inspection will be conducted.
1. Owner/Operator(to whom all permit correspondence will be mailed):
Name of legal organizational entity: Legally responsible person as signed in Item(10)below:
Piedmont Lithium Carolinas, Inc. Monique Parker
Street address: City: State: Zip Code:
42 E Catawba Street Belmont NC 28012
Telephone number: Email address:
980-701-9935 [e-mail]
Type of Ownership:
Government
❑County ❑Federal ❑Municipal ❑ State
Non-government
121 Business(If ownership is business,a copy of NCSOS report must be included with this application)
❑Individual
2. Industrial Facility(facility being permitted):
Facility name: Facility environmental contact:
Carolina Lithium Lithium Hydroxide(LICH)Conversion Plant Monique Parker
Street address: City: State: Zip Code:
Hephzibah Church Road Bessemer City NC 28016
Parcel Identification Number(PIN) County:
multiple,see Figure 3 in supplemental information document Gaston
Telephone number: Email address:
980-701-9935 [e-mail]
Latitude of entrance: Longitude of entrance:
35"24'07" 81"19'35"
4-digit SIC code: Facility is: Date operation is to begin or began:
2819 ❑ New ❑ Proposed July 1, 2027
❑ Existing
Types of minerals mined at this facility:
❑ Clay ❑ Feldspar Ore ❑ Lithium Ore ❑ Phosphate ❑Soil ❑ Construction Sand ❑ Industrial Sand
171 Other: No minerals will be mined at the proposed facility.
Page 1 of 11

Is this a processing-only facility for materials mined elsewhere? Is this an inactive mine site?
AI Yes ❑Yes
❑ No AI No
Does total area of this mine site include ready-mixed concrete plant and/or asphalt plant areas?
❑Yes,and has separate NPDES stormwater permits(provide permit numbers):
❑Yes,and does not have separate NPDES stormwater permits
O No
Does this facility already have a valid Mining Permit from DEMLR's Land Quality Section?
121 Yes(please provide the Mining Permit Number) Mine Permit No.36-35
❑ No(please indicate the status of the Mining Permit application)
Are you applying for a discharge permit in the same location as a previously permitted mine?
❑Yes(please provide permit number and mine name)
O No
If the stormwater discharges to a municipal separate storm sewer system (MS4), name the operator of the MS4:
El N/A
3. Consultant(if applicable):
Name of consultant: Consulting firm:
Todd Kennedy HDR Engineering Inc.of the Carolinas
Street address:555 Fayetteville Street,Suite 900 Clty.Raleigh State INC Zip 27601
Code
Telephone number:919 900-1649 Email address:[e-mail]
4. Development ActivRles and Buffers
Mining operation will precede development activities at this site:
❑Yes
AI No
Mine is located within one of the 20 Coastal Counties,and will it add more than 10,000 ftz of impervious surface:
❑Yes(to both)
❑ No,this mine is within one of the 20 Coastal Counties,but will not at more than 10,000 ftZ of impervious surface
171 No,this mine is not within one of the 20 Coastal Counties
Mine is in the Neuse,Tar-Pamlico,or Catawba River Basins,OR in the Randleman or Jordan Water supply Watersheds?
O Yes(specify size of stream buffers) Catawba River Basin-30-foot buffers
❑ No
Mine site will include wastewater discharges from a ready-mix concrete batch plant?
❑Yes(please seek additional coverage under General Permit NCG140000: Ready-Mix Concrete)
0 No
5. Mine Dewatering
Mine dewatering will occur at this site:
❑Yes O No(mark N/A for the rest of this section)
Mine dewatering from this facility will be discharged to:
❑Surface Waters and/or Wetlands
❑Other(specify)
❑Mine will not discharge dewatering to Surface Waters and/or Wetlands;specify how dewatering will occur and where
water will be directed:
O N/A
Page 2 of 11

Wetlands and/or Surface Waters are within 400r of the mine pit perimeter: 404/401 Certification permits required:
❑Yes(specify distance) ❑Yes(briefly describe)
❑ No ❑ No
0 N/A ❑ N/A
Have you been required to obtain a wetland delineation certified by the US Army Corps of Engineers?
❑Yes(please attach to this application) ❑ No
6. Wastewater Treatment
Will this facility wash mined materials?
❑Yes 21 No
Will discharges of process wastewater treatment systems occur(including possible recycle system overflows)
0 Yes(please describe)As depicted on the water now diagram,arty coding tower blowdown,conversion wastewater,or leachate from conversion plant
tailings or waste product storage will be muted to an on-site pretreatment facility for treatment,after which the treated water will be
❑ No combined with sanitary water and discharged to an cif-site publicly owned treatment works facility.
Will this facility employ chemical additives to flocculate suspended solids?
❑Yes(specify name/manufacturer/quantity of daily use)
0 No
Note:please visit:httos://fiiles.nc.goy/ncdea/Water+Quality/Environmental+Sciences/ATU/PAM8 30 18.pdfforlistof
approved PAMS
Will any of the wastewater treatment facilities at this mine overflow only during rainfall events that exceed the 10-yr,24-hr
rainfall event?
❑Yes(specify which systems)
0 No
Are wastewater treatment facilities(including recycle systems) planned in the 100-year flood plain?
❑Yes Ai No
Wastewater Treatment Alternative Review as required by 15A NCAC 2H.0105(c)(2)
Types of wastewater this mine site will discharge: ❑ Mine Dewatering 0 Process Wastewater
Types of wastewater considered for this alternative review: ❑ Mine Dewatering 0 Process Wastewater
Are there existing sewer lines within a one-mile radius?
171 Yes
❑+ Wastewater treatment plant will accept wastewater
O Is feasible to connect(explain) There Is a sewer line within 1-mile of the project;however,the line is not sufficient to meet the
project needs.Therefore,as pan of the overall project development,sewer lines will be extended
to the project that will connect to the Two Rivers Utilities(TRU)Long Creek POTW.The Lithium
❑ is not feasible to connect(explain) Hydroxide conversion Plant will treat wastewater onsite to meet the limits of TRU's Significant
Industrial User(SIU)permit requirements that will be put in place,prior to discharging to TRU's
system.
❑Wastewater treatment plant will not accept wastewater(please attach letter documenting this)
❑ No
Page 3 of 11

Are you already proposing a closed-loop recycle system(CLRS)that meets design requirements of 15A NCAC 2T.30000?
❑Yes,for dewatering
❑Yes,for process wastewater
❑Yes,for both While CURS Is technologically feasible.CLRS is not proposed because the Lithium
O No,this option is technologically feasible(explain) Hydroxide Conversion Plant will treat process wastewater at an onsite treatment plant to
meet the limits of TRU's Significant industrial User(SIU)permit requirements that will be
put in place,prior to discharging to TRU's system.
❑ No,this option is not technologically feasible(explain)
❑ No,this option is otherwise feasible(explain)
❑No,this option is otherwise not feasible(explain)
What is the feasibility of building a CLRS compared to direct surface water discharge?
N/A-The Lithium Hydroxide Conversion Pleat process wastewater will be treated onsite and discharged to TRU's Long Creek POTW.
Surface or Subsurface Disposal System
❑ A surface or subsurface disposal system is technologically feasible(explain)
❑A surface or subsurface disposal system is not technologically feasible(explain)
The Lithium Hydroxide Conversion Plant
will heat process wastewater at an
❑A surface or subsurface disposal system is otherwise feasible to implement(explain) onsite treatment plant to meet the limits
of TRU's Significant Industrial User(SIU)
permit requirements that will be put in
O A surface of subsurface disposal system Is not otherwise feasible to implement(explain) place,poor to discharging to TRU's
system.
What is the feasibility of employing a subsurface of surface discharge as compared to a direct discharge to surface waters?
N/A-The Lithium Hydroxide Conversion Plant procaas wastewater will be treated onsite and discharged to TRU's Lore Creek POTW.
Direct Discharge to surface waters is the most environmentally sound alternative to all reasonably cost-effective options
for the wastewaters being considered?
❑Yes
WI NO WA-The Lithium Hydroxide Conversion Plant process wastewater will be heated onsite and discharged to TRU's Long Creek POTW.
If this review included all wastewater discharge types,would excluding some types make any of the above non-discharge
options feasible for some the wastewaters?
❑Yes The Lithium Hy
droxide Conversion Plant process wastewater will be treated onsite,combined calm sanitary wastewater,and discharged to TRU's
AI NO Long Creek POTW.
7. Outfalls(s)At least one outfall is required to be eligible for coverage.
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
SB-17 I Beaverdam Creek WS-IV, C ❑This watershed has a TMDL
Discharge from this outfall is from:
❑ Storrnwater ❑ Mine Dewatering ❑ Process Wastewater
7Q30 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WS4,WS-II,WS-111,SA,or PNA):
Discharge occurs from this outfall:
❑v Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: longitude of outfall:
35"23'30.13" 81*19'11.16"
Brief description of the industrial activities that drain to this outfall:
Emulsion storage and truck parking stormwater.
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑Yes AI No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar ear?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
SK-20 Beaverdam Creek WS-IV,C ❑This watershed has a TMDL.
Page 4 of 11

Discharge from this outfall is from:
O Stormwater ❑Mine Dewatering ❑ Process Wastewater
7Q30 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WSI,W541,WS-III,SA,or PNA):
Discharge occurs from this outfall:
+❑ Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(Indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
35"23`34" 81"19'11"
Brief description of the industrial activities that drain to this outfall:
Conveyor access road stormwater.
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes V No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar ear?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
SK-25 Beaverdam Creek WS-IV, C ❑This watershed has a TMDL
Discharge from this outfall is from:
❑Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q30 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WSI,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
O Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
35"23'33.86" 81018'50.11"
Brief description of the industrial activities that drain to this outfall:
Emulsion storage and bulk truck parking
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑Yes Al No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar ear?
3-4 digit identifier: Name of receiving water: classification: ❑This water is impaired.
SB-201 A I LIT to Beaverdam Creek C ❑This watershed has a TMDL.
Discharge from this outfall is from:
O Stormwater ❑Mine Dewatering ❑ Process Wastewater
7Q30 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WSI,WS-11,WS-III,SA,or PNA):
Discharge occurs from this outfall:
0 Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
35"23'51" 81-19'8.8"
Brief description of the industrial activities that drain to this outfall:
Conversion plant(including conveyor and roads).
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes W1 No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: ❑This water Is impaired.
SB-201 B I LIT to Beaverdam Creek C ❑This watershed has a TMDL.
Discharge from this outfall is from:
+❑Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q10 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WSI,WSII,WSIII,SA,or PNA):
Discharge occurs from this outfall:
Page 5 of 11

❑ only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow In CFS)
Latitude of outfall: Longitude of outfall:
35"23'50.14" 81019'9.02"
Brief description of the industrial activities that drain to this outfall:
Conversion plant(including conveyor and roads).
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes Gil No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar ear?
All outfalls must be listed and at least one outfall is required.Additional outfails may be added in the section
"Additional Outfalls"found on the last page of this NO].
S. Other Facility Conditions (check all that apply and explain accordingly):
❑This facility has other NPDES permits. If checked,list the permit numbers for all current NPDES permits:
N/A
❑This facility has Non-Discharge permits(e.g.recycle permit). If checked,list the permit numbers for all current Non-
Discharge permits:
N/A
O This facility uses best management practices or structural stormwater control measures.
If checked, briefly describe the practices/measures and show on site diagram:
sediment basins(813-17 and sB-201 to sB-207)and skimmer basins(5K•20 end sK-25)xd9 be c strucled for collecii g stormwater nmoff.
O This facility has a stormwater Pollution Prevention Plan(SWPPP).
If checked, please list the date the SWPPP was implemented:
A draft SWPPP is provided with this NCG02 NOI,which will be updated prior to future operations.
❑This facility stores hazardous waste in the 100-year floodplain.
If checked,describe how the area is protected from flooding:
N/A
❑This facility is a(mark all that apply)
❑ Hazardous Waste Generation Facility
❑ Hazardous Waste Treatment Facility
❑ Hazardous Waste Storage Facility
❑ Hazardous Waste Disposal Facility
If checked, indicate:
Kilograms of waste generated each month: Type(s)of waste:
How material is stored: Where material is stored:
Number of waste shipments per year: Name of transport/disposal vendor-
Transport/disposal vendor EPA ID: Vendor address:
❑This facility is located on a Brownfield or superfund site
If checked,briefly describe the site conditions:
WA
❑ Facility provides appropriate secondary containment for bulk storage of liquid materials
If checked,briefly describe these measures:
Project will follow all state and federal requirements for secondary containment.
❑ Site has an active landfill within the mining permit boundary
If checked, please indicate type:
a) ❑ LGD(Land clearing and Inert Debris)
b) ❑ other(specify)
Page 6 of 11

9. Required Items (Application will be returned unless all of the following items have been included):
O Check for$120 made payable to NCDEQ
+❑Copy of most recent Annual Report to the NC Secretary of State(if applicable)
+❑This completed application and any supporting documentation
0 Copy of the approved mining permit or indication of mining permit application status
❑Copy of US Army Corps—approved wetland delineation(if applicable)
+❑ Une drawing of the water flow through the facility or block flow diagram
+❑ Pictorial description of the nature of any sources of water and any collection and treatment measures
+❑A site diagram showing,at a minimum,existing and proposed:
a) outline of drainage areas
b) surface waters
c) stormwater management structures
d) location of stormwater outfalls corresponding to the drainage areas
e) runoff conveyance features
f) areas where process materials are stored
g) impervious areas
h) site property lines
❑+ 2 copies of large scale(24"x36"minimum)site plan showing:
a) topographical lines
b) all outfall locations
c) applicable buffers and delineated wetlands
d) receiving waters
e 100 ear flood plain(if applicable)
❑ Copy of county map or USGS quad sheet with the location of the facility clearly marked
If mines site is in one of the 20 Coastal Counties(if applicable)
❑Applicant has check with the appropriate regional office to verify the need for a Coastal State Stormwater permit.
a) Indicate the Regional Office Contact:
❑ Detailed list of:
a) impervious surface areas and percentages
b) sub-drainage areas
c) total drainage area
If mine is dewatering and near wetlands,or may otherwise impact surface waters or groundwater
❑ 2 copies of large scale(24"x36"minimum)plans delineating areas on the listing acreage including:
a) wetlands
b) ditches
c) well-placements
d) pits
e) borrow areas
f) overburden storage
g) stormwatercontrois/BMPs
h) vehicle maintenance areas
1) settling basins
)) product process(such as screening,stockpiles,and waste piles)
k) total drainage area
1) impervious surface percentages(if state Stormwater programs apply)
m) applicable buffers
n) access and/or haul roads
❑ Pump dewatering size and information on its specifications
Page 7 of 11

❑Well information(design,depths,maintenance)
❑ Physical monitoring for the wetland areas
❑ Settling pond size information,if applicable
❑ Level spreader design,if applicable
❑ Details about dewatering method
❑ Cone of influence calculations
❑ Description of measures to prevent erosion and flooding
❑ Description and information about 401/404 permits that have been obtained
❑ Copy of US Army Corps of Engineers wetlands delineations or approved wetland delineation(if applicable)
❑ 1 have contacted my local regional office about a Pumping Operation and Monitoring(POM)plan
a) Regional Office Contact:
b) Date Contacted:
10.Applicant Certification:
North Carolina General Statute 143-215.6B(i)provides that: Any person who knowingly makes any false statement,
representation,or certification in any application,record,report,plan,or other document filed or required to be maintained
under this Article or a rule implementing this Article. ..shall be guilty of a Class 2 misdemeanor which may include a fine not
to exceed ten thousand dollars($10,000).
Under penalty of law, I certify that:
1211 am the person responsible for the permitted industrial activity,for satisfying the requirements of this permit,and for any
civil or criminal penalties incurred due to violations of this permit.
O The information submitted in this NOI is,to the best of my knowledge and belief,true,accurate,and complete based on
my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the
Information.
0 I will abide by all conditions of the NCG020000 permit.I understand that coverage under this permit will constitute the
permit requirements for the discharge(s)and is enforceable in the same manner as an individual permit.
O 1 hereby request coverage under the NCG020000 General Permit.
Printed Name of Applicant: J.Monique Parker
Title: Senior Vice President,Safety,Environment&Health
1D29 Zy
(Signature of Applicant) (Date Signed)
Mail the entire package to: DEMLR—Stormwater Program
Department of Environmental Quality
1612 Mail Service Center
Raleigh, NC 27699-1612
Page 8 of 11

Additional Outfalls
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
SB-202A LIT to Beaverdam Creek C ❑This watershed has a TMDL.
Discharge from this outfall is from:
21 Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q30 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HQW,
ORW,Tr,WS-I,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
❑Only during a rainfall event ❑ Intermittently(indicate how often) ❑Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
35"23'45.27" 81019'8.39"
Brief description of the industrial activities that drain to this outfall:
Conversion plant(including conveyor and roads).
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes AI No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is Impaired.
SB-202B I UT to Beaverdam Creek C ❑This watershed has a TMDL.
Discharge from this outfall is from:
O Stormwater ❑Mine Dewatering ❑Process Wastewater
7Q30 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HQW,
ORW,Tr,WS-I,WS•II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
❑Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Co ntinuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
35°23'44.64" 810197.69"
Brief description of the industrial activities that drain to this outfall:
Conversion plant(including conveyor and roads).
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes pl No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar ear?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
SB-203 Beaverdam Creek WS-IV,C ❑This watershed has a TMDL.
Discharge from this outfall is from:
O Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q30 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HQW,
ORW,Tr,WS-I,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
1 Only during a rainfall event ❑Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Page 9 of 11

Latitude of outfall: I Longitude of outfall:
35°23'37.21" 81919'6.66"
Brief description of the industrial activities that drain to this outfall:
Conversion plant(including conveyor and roads).
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes AI No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar ear?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
SB-204A UT to Beaverdam Creek C ❑This watershed has a TMDL.
Discharge from this outfall is from:
M Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q10 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WS4,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
.❑ Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in
CFS
Latitude of outfall: Longitude of outfall:
35"23'39.75" 81°19'16.42"
Brief description of the industrial activities that drain to this outfall:
Conversion plant(including conveyor and roads).
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? C Yes V No
If yes,how many gallons of new motor oil are used each month when avera ed over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
SB-204B UT to Beaverdam Creek C ❑This watershed has a TMDL.
Discharge from this outfall is from:
❑O Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q30 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WS4,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
❑Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
35023'39.01" 81019'15.88"
Brief description of the industrial activities that drain to this outfall:
Conversion plant(including conveyor and roads).
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes Z No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar ear?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
SB-205 UT to Beaverdam Creek C ❑This watershed has a TMDL
Discharge from this outfall is from:
❑Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q10 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WS-I,WS-11,WS-III,SA,or PNA):
Discharge occurs from this outfall:
O Only during a rainfall event ❑ Intermittently(indicate how often) ❑Continuously(indicate flow in CFS)
Latitude of outfall:35'23.48.a5 ` ' ' " 81*1V1e.4-
Page 10 of 11

Brief description of the industrial activities that drain to this outfall:
Conversion plant(including conveyor and roads).
Do Vehicle Maintenance Activities occur In the drainage area of this outfall? ❑ Yes 0 No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar ear?
Page 11 of 11

Additional Outfalls
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
SB-206 UT to Beaverdam Creek C ❑This watershed has a TMDL.
Discharge from this outfall is from:
❑O Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q10 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HQW,
ORW,Tr,WS-I,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
0 Only during a rainfall event ❑ Intermittently(indicate how often) ❑Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
35023'45.71" 81*19'26,88"
Brief description of the industrial activities that drain to this outfall:
Rail storage yard and rail spur.
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes © No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: --FED—]This water is impaired.
SB-207 UT to Beaverdam Creek C ❑This watershed has a TMDL
Discharge from this outfall is from:
l Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q10 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HQW,
ORW,Tr,WS-1,WS-ll,WS-III,SA,or PNA):
Discharge occurs from this outfall:
O Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
35023'54.74" 81919'20.11"
Brief description of the industrial activities that drain to this outfall:
Conversion plant(including conveyor and roads).
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes 13 No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar ear?
Page 9 of 11

Piedmont Lithium Carolinas, Inc. 1 NCG02 Notice of Intent Application
NCG02 Application Supplemental Information
NCG02 Application Supplemental
Information
1 Introduction
Piedmont Lithium Carolinas, Inc (PLC[), the applicant, is proposing to construct and operate the
Carolina Lithium Project (Project) which consists of the Mine/Concentrate Operations (mine
operations) and the Lithium Hydroxide (LiOH) Conversion Plant(processing operations). A North
Carolina Mining Permit was approved by the North Carolina Department of Environmental Quality
(NCDEQ) Division of Energy, Mineral and Land Resources (DEMLR) Mining Program on May 7,
2024 (No. 36-35) (Appendix A).
PLC] proposes to mine pegmatite ores which includes spodumene for the purpose of lithium
extraction, as well as quartz, mica (muscovite), and feldspar (albite and microcline) at the
Mine/Concentrate Operations. The spodumene concentrate will be conveyed to the Lithium
Hydroxide Conversion Plant for processing. The Lithium Hydroxide Conversion Plant is the
subject of this NCG02 application and specific to the management of operational stormwater; the
Mine/Concentrate Operations is currently being reviewed for coverage under a separate
Individual National Pollutant Discharge Elimination System permit.
The Lithium Hydroxide Conversion Plant is approximately 287 acres and located about one mile
east of Cherryville, NC off/near Hephzibah Church Road, St. Marks Church Road, and Anthony
Grove Road in Gaston County (Appendix B, Figures 1 and 2). A figure depicting land parcels
with the Project boundary is included as Figure 3 (Appendix B).
A copy of PLCI's most recent Annual Report to the NC Secretary of State is included as Appendix
C.
Lithium Hydroxide Conversion Plant construction stormwater will be collected in sediment
basins (SBs) and sediment skimmer basins (SKs) shown on the site map prior to being released
(Figure 4,Appendix B and separately attached plansheets).
See Appendix D for line drawing and pictorial description of water flow through the facility.
1.1 USACE Wetland Delineation
A wetland delineation was performed in April, May, and June 2021, which included the Lithium
Hydroxide Conversion Plant area. The United States Army Corps of Engineers issued a
Jurisdictional Determination on March 18, 2022 (Appendix B, Figure 4 and Appendix E). -
1.2 Clean Water Act Section 404 and 401 Permits
There are no surface water impacts proposed within the Lithium Hydroxide Conversion Plant
project area; stream crossings and outfalls associated with stormwater discharges in the project
area will be constructed outside of the ordinary high water mark and no wetland impacts are
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Piedmont Lithium Carolinas, Inc. 1 NCG02 Notice of Intent Application
NCG02 Application Supplemental Information
proposed. Therefore, Clean Water Act (CWA) 404/401 authorization is not needed as the layout
avoids surface water impacts regulated by the CWA at the Lithium Hydroxide Conversion Plant.
2 Proposed Stormwater Infrastructure
The proposed NCG02 discharge to surface waters will consist of operational stormwater collected
from the areas of the Lithium Hydroxide Conversion Plant (processing operations). Stormwater
will be discharged to Beaverdam Creek and associated unnamed tributaries. Each source is
further described below along with estimated stormwater volumes and characteristics. A Water
Flow Diagram showing proposed NCG02 outfalls and stormwater flows is included in Appendix
D.
The Project's approved Mine Permit No. 36-35 and associated erosion and sedimentation control
plan and reclamation plan will be retained on site and available upon request.
2.1 Stormwater
A system of sediment basins (SB-201 to SB-207) will be constructed for collecting stormwater
runoff from the Lithium Hydroxide Conversion Plant. These basins are located based upon site
topography to receive runoff from the various operations of the Lithium Hydroxide Conversion
Plant site.
Sediment basin SB-17 and skimmer basins SK-20 and SK-25 will be constructed for collecting
stormwater runoff from an access road and the emulsion storage (i.e., blasting materials) and
truck parking area.
The location of these structures is based upon site topography and will intercept water from the
project site for discharge to the receiving streams. Each basin outlet is assigned an NCG02 Outfall
number.
The design criteria for the sediment and skimmer basins are as follows:
• Sediment Basins (SB-17 and SB-201 —SB-207):
o Design Storm: 25-year, 24-hours.
o Maximum Drainage Area: 100 acres per basin.
o Minimum Surface Area: 435 ftZ/cfs or greater.
o Minimum Volume: 1,800 ft3/acre of disturbed area draining to basin.
o Dewatering Mechanism: Skimmer with orifice sized to achieve dewatering the
basin over a 3-day period; each sediment basin has a specific controlled
drawdown rate (Qd) based on the skimmer orifice sized to the respective basin;
discharge will occur through a principal outfall.
o Emergency spillway designed to discharge at the 25-year,24-hour storm event.
• Skimmer Basins (SK-20 and SK-25):
o Design Storm: 25-year, 24-hours.
o Maximum Drainage Area: 10 acres per basin.
o Minimum Surface Area: 325 ftZ/cfs or greater.
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Piedmont Lithium Carolinas, Inc. 1 NCG02 Notice of Intent Application
NCG02 Application Supplemental-Information
o Minimum Volume: 1,800 W/acre of disturbed area draining to basin.
o Dewatering Mechanism: Skimmer with orifice sized to achieve dewatering the
basin over a 2 to 3-day period; each skimmer basin has a specific controlled
drawdown rate(Qd) based on the skimmer orifice sized to the respective basin;
discharge will occur through a principal outfall.
o Emergency spillway designed to discharge at the 25-year,24-hour storm event.
A site plan showing the location of each basin is included in the separately attached plansheets.
These site plans also depict the phasing of when the outfalls would be operational over a five-
year period.
2.2 Stormwater Characteristics
The spodumene concentrate (from the adjacent mine) processed at the Lithium Hydroxide
Conversion Plant will be conveyed to the processing operations in an enclosed conveyor system
and will not be exposed to precipitation. Once received at the Lithium Hydroxide Conversion Plant,
the spodumene concentrate will be completely enclosed and protected from precipitation prior to
processing. There are no sediment or skimmer basins expected to receive stormwater with
exposure to spodumene concentrate.
The process wastewater effluent generated by the manufacturing operations to convert the
spodumene concentrate to lithium hydroxide will be pre-treated at an onsite pretreatment facility
and discharged to an offsite Publicly Owned Treatment Works (POTW) facility via the sewer
collection system. There are no sediment basins or skimmer basins that will receive this process
wastewater effluent.
The conversion plant product(lithium hydroxide)and solid waste streams(tailings and crystallized
salts) produced during the process have limited moisture and will be transported offsite such that
any leachate generated would be nominal and contained appropriately. No discharge of process
wastewater to the ground or surface waters would occur. The following details the management
of the Lithium Hydroxide Conversion Plant product and solid waste streams:
• Battery-grade lithium hydroxide product
o Transported offsite and sold to battery manufacturer.
o Does not have measurable moisture content.
o When stored at the plant prior to transportation, is stored in a completely
enclosed structure.
• Conversion Plant tailings and crystallized salts
o Transported to an offsite permitted facility.
o Has limited moisture content.
o When stored at the plant prior to transportation, is stored in a completely
enclosed structure (i.e., no exposure to rainwater)with designed containment
that ultimately routes to an onsite water pretreatment facility via a sump
system. The pretreated water would ultimately be discharged to an offsite
POTW.
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Piedmont Lithium Carolinas, Inc. 1 NCG02 Notice of Intent Application
NCG02 Application Supplemental Information
There are no stormwater structures expected to receive stormwater with exposure to battery-
grade lithium hydroxide, Conversion Plant tailings, or crystallized salts. The basis of design for
the sediment basins and skimmer basins is erosion control and stormwater received in the
sediment basins will mainly be characterized as having suspended sediment. However, based on
the material being conveyed to the Lithium Hydroxide Conversion Plant from the
Mine/Concentrate Operations, a conservative prediction (e.g., worse case) of constituents that
may be discharged through stormwater outfalls is shown below in Table 2.1 for SBA 7, SB-201 —
SB-207, SK-20, and SK-25.
Table 2.1 Screening results based on LEAF method 1313
Parameter' Concentration
Sulfate .__e = 3.5 mg/L
Aluminum 2.3 mg/L
';Ar_e ic"- ` 0032 mg/L'=s
Chromium 0.0021 mg/L
hCalciurn>.. '�•4'2 mg/L.��°�- � '_
Nickel _ 0.0016mg/L
Iron 074,mg/L;,
Potassium 12.0 mg/L
Magne§ium O'56trh _`
Vanadium 0.027mg/L
Manganese = 0;0086mg/Lfi,
Sodium 6.3 mg/L
Strontium 0.0059 mg/L
.Tdamurn ``.0 048mg/L; J
Lithium 0.2 mg/L
Notes:
1. Parameters present in LEAF tests conducted for the Mine/Concentrate Operations
2.3 Description of Measures to Prevent Erosion and Flooding
Erosion and sediment control structures will be installed prior to disturbance in all areas of the
operation. Detailed designs for planned sediment and skimmer basins are included in the
separately attached plansheets. Erosion and sediment control structures have been designed to
accommodate a 25-year, 24-hour storm event. Stormwater runoff will be captured and discharged
from sediment basins in a non-erosive manner as depicted and designed in the erosion and
sedimentation control design.
A draft Stormwater Prevention Pollution Plan (SWPPP)for the Lithium Hydroxide Conversion
Plant is provided in Appendix F. Since the facility is not currently operational, the SWPPP will
be reviewed, updated, and resubmitted prior to operations, which is anticipated July 2027
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PIEDMONT Piedmont Lithium Carolina, Inc.
42 E Catawba St.
LITHIUM Belmont, NC 28012
October 29, 2024
NC Department of Environmental Quality ^C(�F—NF D
Division of Energy, Mineral, and Land Resources �-(Gv
Stormwater Program Q 1 Z�Z4
1612 Mail Service Center ND
Raleigh, NC 27699-1612
DEM�R•S�ORMW ATER PROGRA
Subject: Piedmont Lithium Carolinas, Inc.
Carolina Lithium Project—Lithium Hydroxide Conversion Plant
NCG02 Notice of Intent Application
Piedmont Lithium Carolinas, Inc. (PLC[) is submitting this NCG02 Notice of Intent application for our
proposed Lithium Hydroxide Conversion Plantfacility located approximately 1 mile east of Cherryville,North
Carolina in Gaston County.
Should you have any questions or require additional information following your review of the enclosed
materials, please contact me, Monique Parker, at(704)813-2301 or moarker( oiedmontlithium.com.
Yours truly, - A
J. Monique Parker, CSP
Senior Vice President, Safety, Environment&Health
Piedmont Lithium Carolinas, Inc.
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Piedmont Lithium Carolinas, Inc. 1 NCG02 Notice of Intent Application
NCG02 Application Supplemental Information
Attachments:
NCG02 Notice of Intent Form
NCG02 Application Supplemental Information
Appendix A—Mine Permit
Appendix B—Figures
Appendix C—Annual Report to Secretary of State
Appendix D—Water Flow and Balance Line Drawing
Appendix E—Jurisdictional Delineation Verification
Appendix F—Draft SWPPP
Site Plan Drawings, attached separately
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