20210908_ADI_Received

CAROLINA GEOLOGICAL SERVICES, INC
RECEIVED
September 3, 2021
Mr. Adam Parr
SEP 0 8 2021
NCDEQ, Mining
1612 Mail Service Center
LAND QUALITY
Raleigh, NC 27699-1612
MINING PROGRAM
Subject: Carteret Dirt Pit, Carteret County, Mining Permit Application
Dear Mr. Parr;
I am writing in response to your August 20, 2021 letter to Mr. Rick Williford, Sunland Sand
and Gravel, in which you requested additional information on the proposed Carteret Dirt Pit in
Carteret County. I will respond to each item in your letter in the same order for clarity;
1. All adjoining property owners and the Carteret County Manager were notified by Certified
Mail. Copies of the postmarked Certified Mail Receipts with tracking numbers are attached.
2. The pumping of stormwater and groundwater from the Mining Area will have no impact on
any wetlands in the vicinity. A Pumping Operation and Maintenance Plan is attached. The
"overflow discharge point" is the same structure that was approved and utilized for the previous
mine on this site. It simply consists of a rip -rap lined ditch, with a 6'x50' rip -rap dissipater outlet.
This structure has been added to the site map.
3. The Mining Area was redrawn to correspond with the "project area" approved by the US
Army Corps of Engineers, which increased the buffer in the area of concern with the US Forest
Service. The buffer was also increased in the portion remaining.
4. The discharge point does flow into Goose Creek, which is classified as HQW: SA.
Accordingly, there are specific rules for monitoring discharges into HQW: SA waters in the
General NPDES Permit NCG020. This site will be bound by and will follow those rules. The
wetlands were delineated by Mr. John Roberts, NC Licensed Soil Scientist. His delineation was
reviewed and approved by Mr. Thomas Charles of the US Army Corps of Engineers. The site is
specifically designed to maintain at least a 50-foot buffer between any land disturbance and any
stream or wetland. The requested Statement is attached.
Please let me know if you need any additional information.
Sincerely,
James Izzell
Carolina Geological Services, Inc.
enclosures
PO Box 429, GARNER, NC 27529

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
BRIAN WRENN
Director
Certified Mail
Return Receipt Requested
7019 1120 0002 0065 1375
Charles R Williford
Sunland Sand and Gravel, Inc.
PO Box 1505
Swansboro, NC 28584
RE: Carteret Dirt Pit
Carteret County
White Oak River Basin
Dear Mr. Williford:
/,rtif
2.
NORTH CAROLINA
Environmental Quality
August 20, 2021
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 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 provide proof, such as copy of the signed return receipts from certified mail, that all adjoining
landowners and chief administrative officer of each county and municipality have been properly
notified.
2. Please provide a Pumping Operation and Maintenance (O&M) plan to demonstrate that dewatering will
not affect wetlands. Please be sure to include details on overflow discharge point on existing pond.
3. Please provide an updated mine map showing the 100 ft buffer to Croatan National Forest requested by
the US Forrest Service.
4. Goose Creek, which has been identified as HQW: SA, appears to be the receiving waterbody for the
pond discharge. Please provide a statement that no wetlands or streams are to be disturbed for this
project.
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.
North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
r 512 North Salisbury street 1 1612 Mail Service Center I Raleigh. North Carolina 27699-1612
®+\ / 919.707.9200

Certified Mail
Mr. Williford
Page 2
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: Mr. Dan Sams, PE

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This PUMPING OPERATION AND MONITORING PLAN was prepared in
accordance with the requirements specified in the National Pollutant Discharge
Elimination System (NPDES) General Permit for Mining (NCG020), and specifically
as applied in the Certificate of Coverage for this location:
Carteret Dirt Pit
Certificate of Coverage
NCG020***
Sunland Sand and Gravel
NC Highway 24
Newport, Carteret County, NC
August 23, 2021
This plan is designed to satisfy the requirements of Part G, Section b of the
NPDES General Permit NCG0200.

Background:
The NPDES General Stormwater Permit for Mining (NCG020000) addresses
impacts of mine dewatering wastewater pumping and discharge on surrounding areas,
including potential impacts to wetlands. The NPDES Permit requires that the mine have
a site specific plan for, 1) groundwater monitoring strategies to demonstrate the effect of
pumping and establish any pumping regime necessary to reduce potential impacts to
surrounding areas, and 2) detailed plans to maintain surrounding hydrology and
respective monitoring to demonstrate compliance.
In order to develop these plans, detailed studies must be done to understand the
site -specific parameters. First, any wetlands that may be potentially impacted must be
delineated according to US Army Corps of Engineers criteria. Second, a study of
potential impacts of groundwater levels must be conducted. This should include a
detailed examination of soil types, permeability, and various zones of groundwater within
the zone of influence. Third, based on the groundwater data, an assessment of potential
impacts to the wetlands by mine dewatering should be estimated. Finally, based on the
potential impact, a plan should be developed to limit as well as monitor the potential
impacts to the wetlands.
Site description:
The Carteret Dirt Pit is located on NC Highway 24, east of Bogue, NC It is
located within the USGS Hydrologic Unit 030201, North Carolina Division of Water
Quality subbasin 20-36-4, Goose Creek. The mine excavation will initially encompass
20.4 acres. Natural groundwater levels within the sand mine are within 5 feet of the
surface. The sand deposit being mined is a coastall deposit consisting of sediments,
ranging from a silty fine to medium grained sand. The excavation will be reclaimed as a
pond. The Mine Plan as submitted for the Mining Permit Application is attached.
Wetland description:
The wetlands adjacent to the Carteret Dirt Pit were delineated in May - June
2021 by Mr. John C Roberts, a NC Licensed Soil Scientist. This delineation was
reviewed and approved by Mr. Thomas Charles, of the US Army Corps of Engineers.
Natural hydration of the wetlands is accomplished by occasional flooding of the low
elevations, as well as natural surface drainage from rainfall. The wetland soils differ
from the upland soils by a dense clay layer that tends to allow the surface water to
"pond" near the surface. It also restricts transmission of water vertically.

Pumping and mine dewatering:
This sand deposit is typical of other deposits in this area. The groundwater table
is several feet below the original ground surface, but above the total depth of the
excavation. Therefore, some groundwater is occasionally pumped from the mining area.
Goundwater and stormwater will be collected within a large sump area in the mined
area. The dewatering pump intake floats on the surface of the collected water,
preventing any sediment from leaving the mining area. Water is then pumped to a large
pond (previously mined area) where it is held until the pond occasionally overflows. The
pond overflow flows into Goose Creek. Based on the volume of the pump and projected
water levels, it is anticipated that a maximum of 300,000 gallons per day maximum will
be pumped from the pit.
Impact of dewatering on adjacent wetlands:
Based on the soil borings and investigations, the soils within the wetlands and
the soils in the mining area are very different. A dense and virtually impermeable clay
layer underlies the hydric soils within the wetlands, while soils in the sand mining area
consists of very permeable sand. The impermeable clay in the wetlands holds the near -
surface water in a concave "perched" condition, thereby supporting the wetland
vegetation and hydrology. This observation is supported by the remarkable difference in
the existing groundwater levels in the two areas. The "perched" water table in the
wetland areas is within 6 inches from the surface, while groundwater levels in the mining
areas are up to several feet. Therefore, there appears to be no connection between the
groundwater in the sand mine and the near -surface groundwater that provides hydration
to the wetlands. The hydration of the wetlands is accomplished by surface water,
rainwater runoff, and occasional flooding of the wetland area, and not from the deeper
groundwater found in the sand mine. Therefore, the mine dewatering will have no
impact on adjacent wetlands. In addition, the water that is pumped from the mining area
will eventually discharge into Goose Creek, therefore, the dewatering activity will actually
enhance the wetland environment, providing hydration even during dry periods.
Further evidence that the dewatering will have little to no impact on the wetlands
is the previous mining activity on the site. Two large mines were excavated on the same
property with dewatering and utilizing the same discharge point. These was no impact
on any wetlands during that operation, and the wetlands around Goose Creek thrived
due to the increased water discharge.

Monitoring:
Based on the observed disconnection between the water within the mining area
and the surrounding wetlands, it is anticipated that any potential dewatering at this mine
will have no impact on the adjacent wetlands. In order to confirm that there are no
impact to the wetlands, a monitoring plan should be established as a precaution.
1. Mine dewatering wastewater discharges should be quantitatively and qualitatively
monitored according to requirements of the NPDES permit. See the "Monitoring
Requirements" in the Stormwater Pollution Prevention Plan.
2. The Discharge Point should be examined weekly to make sure that it is functioning as
designed and that no sediment has discharged into the ditch, creek, or adjacent
wetlands.
3. A written record shall be kept of pumping times and rates. A record of rainfall shall
also be kept in the Stormwater Pollution Prevention Plan.
5. The wetland vegetation in the area between the pond and the mining area should be
inspected at least quarterly. If any vegetation appears to be distressed, an investigation
should be conducted to determine the cause.

Sand & Gravel, INC.
August 21, 2021
Adam Parr
Division of Energy, Mineral and Land Resources
1612 Mail Service Center
Raleigh, NC 27699-1612
Subject: Carteret Dirt Pit
Sunland Sand and Gravel, Carteret County
Dear Mr Parr;
PHONE: [phone]
FAX:[phone]
POST OFFICE BOX 1436
SWANSBORO, NC 28584
In response to your letter of August 20, 2021, in which you requested additional
information regarding the above reference mining permit application, we offer the
following statement in response to your item #4.
We understand that Goose Creek has been identified as HQW: SA, and appears to be the
receiving waterbody for the pond discharge. Accordingly, no wetlands or streams are to be
disturbed for this project
Sincerely,
6z"
Charles R. ordan an Sunland Sd Gravel