NCG020801_OTHER_20070220

STORMWATER DIVISION CODING SHEET �
NCG PERMITS
PERMIT NO.
/V
DOC TYPE
❑HISTORICAL FILE
0 ON_ lTORING REPORTS
DOC DATE
❑ �� 7�/ � oaa U
YYYYMMDD

DRAFT
OPERATION AND MONITORING PLAN
Carter Mine
Carteret County
Operator: Howard D. Carter
Facility Name: Carter Mine
The Carter Mine is located approximately 3 miles northwest of Morehead City and
approximately 3 Miles on Country Club Road northeast of Highway 70. The mine permittee
obtained a mining permit (Mine Permit No. 16-67) for this site which was issued on November
16, 2007. The permitted acreage is 4.59 acres with 2.95 acres approved to disturb. The
excavation area is approximately 2.30 acres. The permitted mine depth is 12 feet from natural
ground elevation with 3 horizontal to 1 vertical or flatter slopes to the water line and 2
horizontal to 1 vertical or flatter below the water line. Natural ground elevation where
excavation is taking place was 15 to 16 feet above MSL. Some wetlands exist within 400 feet of
the pit area.
DESCRIPTION AND OPERATION OF THE MOUNTAIN TRACT MINE DEWATERING ACTIVITIES:
Dewatering activities will consist of pumping pit water from one pit to another. A berm has
been left between two pit cells. The mine operator plans to utilize a 3" sump pump at times
when the need exist. Discharge water will flow through a 10" PVC pipe to an existing level
spreader and will discharge in a north northwest direction through the woods on -site. The flow
will then enter a well vegetative roadside Swale along Country Club Road and flow down the
swale in a southwest direction until it enters an 18" culvert under Country Club Road. Flow will
then enter an existing well vegetative ditch that runs through the woods northwest of the pit
area. From here it will eventually end up in the Newport River. Stormwater from disturbed
areas around the pits will be directed into the excavation areas.
Monitoring:
All storm water and wastewater discharges within the permitted boundary associated with land
disturbing activities shall be monitored, analyzed and reported as required by the NPDES
General Permit No. NCG020000. The intent of the permit is to minimize potential negative
impacts to water quality. The mine operator shall keep a copy of all records related to
inspections, reports, etc. regarding storm water/wastewater and provide these records to the
Division of Water Quality as required by the General Permit.

l
Carter Mine O & M Plan
Page 2
The BMP Controls shall be inspected, at least weekly and within 24 hours following a storm
event which produces a discharge. All maintenance of these BMP measures shall be
documented. The maintenance shall include, but is not limited to, good housekeeping, repair
of measures, cleaning out and maintaining the level spreader area and other areas below the
level spreader area. Replacement of any sediment filled rip rap will take place as necessary to
prevent downstream impacts. If sediment enters any wetlands or other negative impacts are
observed, operations shall cease, the Division of Water Quality shall be notified, and adequate
preventative measures shall be promptly implemented in order to correct the problem, prior to
resuming the operation.

OPERATION AND MONITORING PLAN
Carter Mine
Carteret County
Operator: Howard D. Carter
Facility Name: Carter Mine
The Carter Mine is located approximately 3 miles northwest of Morehead City and
approximately 3 Miles on Country Club Road northeast of Highway 70. A mining permit (Mine
Permit No. 16-67) was issued for this site on November 16, 2007. The excavation area is '
approximately 2.30 acres. The permitted mine depth is 12 feet from natural ground elevation
with 3 horizontal to 1 vertical or flatter slopes to the water line and 2 horizontal to 1 vertical or
flatter below the water line. Natural ground elevation where excavation is taking place was 15
to 16 feet above MSL. Some wetlands exist within 400 feet south -- southeast of the pit area.
DESCRIPTION AND OPERATION OF THE MOUNTAIN TRACT MINE DEWATERING ACTIVITIES:
Dewatering activities will consist of pumping pit water from the pit area into holding basins and
a perimeter ditch located along the south-southeast area of the mine site. Pit water will also be
pumped from one pit to another as long as storage capacity exists. A berm has been left
between two pit cells. The mine operator plans to utilize a pump at times to pump pit water
through a discharge pipe to a stilling basin where the discharge will flow across a 12' wide level
spreader. Discharge water will flow through a discharge pipe to an existing level spreader and
will discharge in a north northwest direction through the woods on -site then southwest
through a well vegetated roadside swale along Country Club Road. The flow will then enter an
18" culvert under Country Club Road. Flow will discharge from the culvert and enter an existing
well vegetative ditch that runs through the woods northwest of the pit area. From here it will
flow toward Newport River. Storm water from disturbed areas around the pits will be directed
into the excavation areas. The pumping rate is anticipated to be approximately 98,000 gal/day
for a period of 10 hours per day. This will result in a discharge amount of 163 gal/min which
2.72 gal/sec. This flow rate results in approximately 21.8 cubic ft/min or .36 cubic ft/sec. The
12'wide level spreader and the 18" concrete pipe under country club road are well over
adequate to pass the anticipated flow amount and should not cause any problems regarding
flooding of Country Club Road.
Monitoring:
All storm water and wastewater discharges within the permitted boundary associated with land
disturbing activities shall be monitored, analyzed and reported as required by the NPDES
General Permit No. NCG020000. The intent of the permit is to minimize potential negative
impacts to water quality. The mine operator shall keep a copy of all records related to
inspections, reports, etc. regarding storm water/wastewater and provide these records to the
Division of Water Quality as required by the General Permit.

Carter Mine O & M Plan
Page 2
The BMP Controls shall be inspected, at least weekly and within 24 hours following a storm
event which produces a discharge. All maintenance of these BMP measures shall be
documented. The maintenance shall include, but is not limited to, good housekeeping, repair
of measures, cleaning out and maintaining the stilling basin & level spreader and other areas
below the level spreader. Replacement of any sediment filled rip rap will take place as
necessary to prevent downstream impacts. If sediment enters any wetlands or other negative
impacts are observed, operations shall cease, the Division of Water Quality shall be notified,
and adequate preventative measures shall be promptly implemented in order to correct the
problem, prior to resuming the operation.
This Operation & Monitoring Plan was written b y:
Floyd Williams
Williams Environmental & Geological Services, PLLC
November 29, 2011