20240320_Narrative_23-01

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SWCA113 Edin6vrgh Sovlh Drive
Suite y 120
Cary,North Coro€ina 27511
Tel [phone]
ENVIRONMENTAL CONSULTANTS www.swca.com
1136 Sound Science.Creative Solutions'
R�c�1\lED
March 18, 2023
State of North Carolina SEC�10N
Department of Environmental Quality LAND QUAttTY
Division of Energy, Mineral, and Land Resources
Mining Program
Archdale Building, Fifth Floor
512 N Salisbury Street
Raleigh, NC 27604
Attn: Corey Clayton
RE: Mine Permit Modification Response to ADI_2024.03.06
Kings Mountain Mine- East
Albemarle U.S., Inc.-Cleveland County, NC
Mining Permit No. 23-01
We are in receipt of the ADI dated March 6, 2024 for the referenced permit application modification. The
enclosed Attachment(Attachment 1) provides responses to your request for additional information. Two (2)
copies of the revised Mine Map drawing set are also enclosed.
Should you have any questions or require additional information, please contact me at 352.818.8995 or via
email at steve.adams(@swca.com
Sincerely
SWCA
5 Awl .
Steve Adams
Project Manager
Cc: John Kuhn-Albemarle U.S., Inc.
Attachments Attachment 1 Response to ADI+2-eapies)
Mine Map Set (2 copies)

Attachment 1
Response to ADI_2024.03.06
1. After reviewing the drill pad locations, it is requested to change the sediment and erosion
control measures,as proposed on the mine maps,at the following three drill pads: HAC-008 to
Type A, DRA-BH-029 to Type A,and HAC-030 to Type B.
Response:The erosion and sediment control measures have been revised as requested and provided
on the revised Mine Map.
2. Southeast of"#1 Pond" is a Swale that the sewer demo runs through. Please confirm that
appropriate sediment and erosion control measures will be taken to prevent impact to the
surrounding wetlands.
Response:A drainage feature (swale) routes water to the sand tailings pit. All drainage is internal to
the site and does not run off-site or enter a stream or wetland. To provide a stronger measure of
erosion and sediment control, additional measures (silt fence and silt fence outlet) have been
incorporated and are shown on the revised Mine Map.
3. Please indicated all current and proposed outfalls or discharges on the mine map.This should
include outfalls 004, 005A,and 005E as referenced in the Stormwater Pollution Protection Plan
submitted with your application.
Response: Outfall locations 004,005A, and 005B are now shown on the revised Mine Map.
4. Please provide a typical cross-section for any existing or perimeter channels on the mine
maps.
Response:They are no existing or perimeter channels on the East Mine site.There are however,
swales that direct water to internal areas with no off-site runoff or runoff to existing streams and
wetlands.A typical swale cross-section is provided on the revised Mine Map.