20211221_ADI_34-01

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
BRIAN WRENN
Director
Certified Mail
Return Receipt Requested
7016 2140 0000 4368 0017
Tony Johnson
Vulcan Materials, LLC
11020 David Taylor Drive, Suite 400
Charlotte, NC 28262
RE: 421 Quarry
Mining Permit No. 34-01
Forsyth County
Yadkin Pee -Dee River Basin
Dear Mr. Johnson:
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NORTH CAROLINA
Environmental Quality
December 21, 2021
We have reviewed the modification request your company submitted for the referenced mine site. In order for this
office to complete its review of the referenced project in accordance with G.S. §74-50 and §74-51 of the Mining
Act of 1971, please provide the additional or revised information in accordance with the following comments:
1. Please label and clearly indicate on the mine map the location of wells of adjacent properties.
2. Please provide a Pumping Operation and Maintenance plan for the pit dewatering.
3. Please provide information on how the pit dewatering will influence local groundwater table and/or
Silas Creek.
4. The Division of Water Resources Groundwater Management does not have enough information to
complete their review on the application. Please provide additional information on volume and method
of dewatering. If pumping more than 100,000 gallons per day you will need to register the water
withdrawals with DWR and report on an annual basis. If pumping more than 100,000, please provide
proof of registration.
5. Please provide supporting calculations to confirm that the polishing basin is adequately sized for the
25-year storm event.
6. The polishing basin appears to utilize rock baffles; please confirm that their volume is not included in
the figures for volume provided.
7. Maintenance notes provided appear to be for coir baffles, please provide a maintenance plan for the
rock baffles.
8. Please clearly identify and label on the mine map the location for temporary stockpiling, contractor
laydown, and parking. Please clarify the erosion and sediment control measures with construction and
maintenance details for each of these areas.
D E Q North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
512 North Salisbury Street 1 1612 Mail Service Center I Raleigh, North Carolina 27699-1612
NORhI CAROLINA -
oaPermemoieomronmenmiuuaiity /`� 919.707.9200

Certified Mail
Mr. Johnson
Page 2
9. The construction entrance appears to be inadequate. Please provide a construction entrance of at least
100' or clarify why a construction entrance of less is adequate.
10. Please clarify exactly what material will be used for fill. Please define "other naturally occurring
materials" as stated in the application. Please clarify if any of the material entering the site will have
been chemically treated.
11. Please provide the locations where fill material will be coming from. Please clarify how reporting of
future locations and volumes will be monitored.
12. Please provide soils information from the locations where the material will be coming from and how
pH will be monitored on the material entering the site.
13. Please provide pH information on the soil and rock of the receiving site.
14. Please clarify how potential groundwater infiltration will be addressed.
15. Please clarify your testing and reporting procedures to achieve compaction to a minimum of 90%
standard proctor. At a minimum, details should include testing method, testing frequency, sampling
area, and lift size.
Please note, this office may request additional information, not included in this letter, as the mining application
review progresses. Be advised that our review cannot be completed until all of the items listed above have been
fully addressed.
In order to complete the processing of your application, please forward two (2) copies of the requested information
to my attention at the following address:
Division of Energy, Mineral and Land Resources
Department of Environmental Quality
1612 Mail Service Center
Raleigh, NC 27699-1612
As required by 15A NCAC 513.0113, you are hereby advised that you have 180 days from the date of your receipt
of this letter to submit all of the requested information. If you are unable to meet this deadline and wish to request
additional time, you must submit information, in writing, to the Director clearly indicating why the deadline cannot
be met and request that an extension of time be granted. If an extension of time is not granted, a decision will be
made to grant or deny the mining permit based upon the information currently in the Department's files at the end
of the 180-day period.
Though the preceding statement cites the maximum time limit for your response, we encourage you to provide the
additional information requested by this letter as soon as possible. Your prompt response will help us to complete
processing your application sooner.
Please contact me at [phone] if you have any questions.
Sincerely,
Adam Parr, PE
Assistant State Mining Engineer
cc: Ms. Tamera Eplin, PE