01-10 adilet 20200325

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
BRIAN WRENN
Acting Director
Certified Mail
Return Receipt Requested
7014 0510 0000 4171 7831
Mr. Chad M. Threatt
Alamance Aggregates LLC
PO Box 552
Snow Camp, North Carolina 27349
RE: Proposed Alamance Quarry
Alamance County
Cape Fear River Basin
Dear Mr. Threatt:
NORTH CAROLINA
Environmental Quality
March 25, 2020
and Construction Materials Quarry
We have reviewed the application your company submitted for the referenced mine site.
In order for this office to complete its review of the referenced project in accordance with GS
74-50 and 51 of the Mining Act of 1971, please provide the additional or revised information in
accordance with the following comments:
Provide proof that your company has obtained the buffer authorization from the
Division of Water Resources for impacts to the buffer from the access road and
fencing.
2. Show the location of the monitoring wells and permanent seismograph locations
on the Mine Map. In addition, show the dwelling and existing wells within the
permit boundary.
3. Describe the traffic on the roadway that crosses the Colonial Pipeline. Provide
details on any necessary measures needed to protect said roadway.
4. Provide a well water quality analysis for all wells located within 500 feet of the
proposed pit limits. At a minimum the analysis shall include the following
parameters:
radiological: radon, uranium, and gross alpha and gross beta
D_E Q�� North Carolina Department of Environmental Quality 1 Division of Energy, Mineral and Land Resources
512 North Salisbury Street 1 1612 Mail Service Center I Raleigh. North Carolina 276991612
a .^'� , 919.707.9200

Certified Mail
Mr. Threatt
Page Two
total and dissolved metals: Aluminum, Antimony, Arsenic, Barium, Beryllium,
Boron, Cadmium, Calcium, Chromium, Cobalt, Copper, Iron, Lead,
Lithium, Magnesium, Manganese, Mercury, Molybdenum, Nickel, Potassium,
Selenium, Silver, Sodium, Strontium, Thallium, Tin, Titanium, Vanadium, Zinc
microbiology: Alkalinity, Bicarbonate, Carbonate, TOC (Total Organic Carbon),
Turbidity
nutrients: NH3-N, NO2+NO3-N, Phosphorus Total as P, TKN (Total Kjeldahl
Nitrogen)
wet chemistry: Bromide, Chloride, Fluoride, Silica, Sulfate, Sulfide, Total
Dissolved Solids (TDS)
bacteria: total coliform & E.coli
5. Address the following erosion and sediment control measures:
A. Generally speaking, the design for many sediment basins associated with this
mine are not approvable due to poor placement, configuration, and non-
adherence to standard sediment basin design.
B. The basins need to be shown on the plans, in scale, along with all the measures.
C. Placement of all the sediment basin details on one sheet has been problematic
for review because the surrounding topography isn't really shown.
D. Why are the match lines shown to be about half an inch wide on the plans? They
are covering up topo and measures.
E. Removal of the temporary crossing and other measures need to be addressed in
the reclamation plan, if not already.
F. They should address maintenance of measures in the crossing area since it is
not typical of the rest of the site.
G. They need to move the silt fence back from the tops of the stream banks to the
maximum extent practical in the span culvert area.
In addition, address the following:
It is not acceptable for the emergency spillway to be in the first cell.
It is not acceptable for the skimmer to be located up the side slope. It creates a
situation where the basin cannot drain to the floor.

Certified Mail
Mr. Threatt
Page Three
Regarding the skimmer basin design, 18 of the 29 basins are designed such that
the baffles run the length of the basin, resulting in short flow paths. There are
several instances where it is difficult to determine if the basin design is
acceptable given scale of the drawings when including each of the basins on a
single sheet, and there is no difference in the line used for basin contours and
baffles.
Basin 1: The outlet of the slope drain appears to be placed on top of the first
baffle and flow into the second cell
Basin 2: The outlet of the slope drain appears to be placed on top of the first
baffle and flow into the second cell, and the baffles are right on the contours such
that there is no storage on the bottom of the basin in the first and last cell.
Basin 3: The outlet of the slope drain appears to be placed on top of the first
baffle and flow into the second cell
Basin 4/5: The ditch design appears to bypass the basin
Basin 8: The diversion is shown conveying flow into the second cell
Basin 9: The diversion appears to convey flow right onto the baffle between the
first and second cell
Basin 11: A diversion is shown to convey flow into the third or fourth cell
Basin 12: The baffles are right on the contours such that there is no storage on
the bottom of the basin in the first and last cell.
Basin 14 The baffles are very close to the contours such that there is very little
storage on the bottom of the basin in the first and last cell. Cells should be 25%
each.
Basin 15: The baffles are very close to the contours such that there is very little
storage on the bottom of the basin in the first and last cell
Basin 18: The ditch design appears to bypass the basin
Basin 20: Flow appears to be conveyed into second cell
Basin 22: The diversion appears to be conveyed right onto the baffle between the
first and second cell
Basin 26: The diversion appears to convey flow just before the first baffle.
Basin 28: The diversion appears to run through the emergency spillway.
Basin 29: The diversion appears to convey flow just before the first baffle.
Please be advised that our review cannot be completed until all of the items listed
above have been fully addressed. In addition, please note this office may request additional
information, not included in this letter, as the mining application review progresses.
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:

Certified Mail
Mr. Threatt
Page Four
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.
�ifllerely, �kfll\,
Judith A. Wehner
Assistant State Mining Specialist
Enclosures
cc: Ms. Tamera Eplin, PE