20231019_ADI_Received

NORMS &TUNSTALL
CONSULTING ENGINEERS P.C.
2602 Iron Gate Dr.Suite 102 1429 Ash-Little River Road
Wilmington,NC 28412 Ash,NC 28420
[phone] [phone]
[phone] Fax [phone] Fax
John S.Tunstall,P.E. _ _ y ..yy ; J.Phillip Norris,P.E.
T.Jason Clark,P.E. Y 1 M Joseph K Bland,P.E.
Robbie P.Hennelly,E.I.
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October 18, 2023 :
Adam Parr, PE
Assistant State Mining Engineer
NCDEQ / Division of Land Resources
Land Quality Section — 5th Floor
512 N. Salisbury Street
Raleigh, NC 27604
Re: WBM 4 LLC Sand Mines 1-4
Review Comment Response
Columbus County, NC
NT Project No. 22081
Dear Mr. Parr,
We are responding to your review letter dated September 6, 2023, as follows:
1. The mine permit boundary has been identified as requested.
2. Vegetated/undisturbed buffers have been noted on the plans. A hatch pattern has been
added to these areas to mor clearly identify them.
3. The current applicant is in the process of updating NCSOS information that will change
the named applicant to an LLC. The updated original signed application docs will be
forwarded under separate cover.
4. NCG02 Notice of Intent Submittal cover letters and email correspondence with Brittney
Cook, NPDES Stormwater General Permit Coordinator are enclosed.
5. NCDOT dewatering basins have been added to the plans. The outfall for both of these
basins is labeled accordingly.
6. A NCDOT dewatering basin has been provided for each pit. It has been determined that
the distance between pits is too far for pit to pit discharge. We have updated the
application accordingly.
7. Copies of LISPS Receipts, Green Cards, Return Envelopes have been provided.
8. Details for the NCDOT dewatering basin are provided.
NCBELS License C-3641

Mr. Adam Parr
WBM 4 LLC Sand Mines 1-4
Review Comment Response
NT Project No. 22081
October 18, 2023
Page 2
9. A pumping O&M plan has been provided as requested.
10.E & S measures have been provided as requested.
11.E & S measures are shown on the plans and details provided.
12. Temporary gravel construction entrance detail is provided on Sheet C5. See E & S notes
on C5 for additional information.
13.A copy of ACOE concurrence has been provided for your use.
14.The connecting roads may require additional grading & compaction. Each section of haul
road is allotted for according to which pit area it serves.
15.A copy of correspondence between Columbus County and the Flood Plain Administrator
has been provided for your use.
Sincerely,
NORRIS & TUNSTALL
CONSULTING ENGINEERS, P.C.
4ph oBla P.E.
J KB/ttw
22081 10-18-23 s-mining-Itr resp.
cc: Dave Tripp

NORTH CAROLINA MINING State of North Carolina 1612 Mail Service Center
PERMIT APPLICATION Department of Environmental Quality Raleigh,NC 27699-1612
Division of Energy,Mineral,and Land Resources [phone]
C.PROTECTION OF NATURAL RESOURCES
1. Describe in detail the sequence of events for the development and operation of the mine and reference the sequence
to the mine map(s).Attach additional sheets as needed.
Once all permits are granted the operator will begin clearing and excavating
work. Any dewatering will discharge into the appropriate NCDOT watering
basin. Sand will be mined on an as needed basis.
2. Describe specific erosion control measures to be installed prior to land disturbing activities and during mining to
prevent offsite sedimentation(include specific plans for sediment and erosion control for mine excavation(s),waste
piles,access/mine roads,and process areas),and give a detailed sequence of installation and schedule for
maintenance of the measures.Locate and label all sediment and erosion control measures on the mine map(s)and
provide typical cross-sectionskonstruction details of each measure.Engineering designs and calculations are required
to justify the adequacy of any proposed measures.
The proposed excavation area will be surrounded by natural buffers. Areas
surrounding excavation will drain internally to the site. No movement of silt is
expected off site or into adjacent wetlands.
3. A)Will the operation involve washing the material mined,recycling process water,or other wastewater handling?
FIYES FX NO
If yes,briefly describe all such processes including any chemicals to be used.
B)will the operation involve discharging fresh or wastewater from the mine or plant as a point discharge to the waters
of the State?
FIYES 1NO
If yes,briefly describe the nature of the discharge and locate all proposed discharge points(along with their method of
stabilization)on the mine map(s).
Revised September 21,2021 Page 16