NCG020922_Pumping O&M Plan First Submittal_20171219

THOMAVOSIMPSON
C❑ N S T R U CTI O N
PO Box 1850 Atlantic Beach, NC 28512
Phone: [phone]
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OPERATION AND MONITORING PLAN
North River Club Mine
Carteret County
Operator: Noah Simpson
Facility Name : North River Club Mine
The North River Club Mine is located approximately 2 miles northeast of Beaufort, North Carolina, and 1
mile east of Highway 101. A mining permit (Mine Permit # 16-76) was issued on August 25, 2014. The
excavation area is 20.00 acres. The permitted mine depth is 34 feet from natural ground elevation with
3 horizontal to 1 vertical slopes. Natural ground elevation is 10-11 feet above MSL. Wetlands exist on
the property approximately 320 feet east of the pit area.
DESCRIPTION AND OPERATION OF THE MINE DEWATERING ACTIVITIES:
Dewatering activities will consist of pumping pit water from the North River Mine excavation area into
the adjacent Simpson Mine pit (NC Mine Permit # 16-78) located to the southwest. The Simpson mine
storage pond is approximately 11 acres with 10 feet of freeboard. The total storage capacity available is
35,841,168 gallons. The mining activity will utilize a 650 gallon per minute pump and 4" pipe to dewater
the North River Club mine. The maximum pumping rate is anticipated to be approximately 390,000
gallons per day for a period of 10 hours per day. Storm water from disturbed areas around the pit will be
directed into the excavation areas. A Staff Gauge will be placed in the Simpson Mine Pit Basin and if it
reaches maximum capacity mine dewatering activities shall cease, and the Simpson secondary
dewatering/settling basin shall be used to release discharge water. The secondary basin is 68'x120'x4'
foot deep, has a maximum pumping capacity permitted at 760 gallons per minute, a coir fiber baffle,
and a 12" CMP riser discharging to a 10'x15' rip rap energy dissipator located in the adjacent vegetated
ditch. From here discharge will flow towards Wading Creek at approximately 1.69 cubic ft/sec.
Monitoring
All storm water and waste water 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 inspection. Reports, ect regarding storm
water/waste water and provide these records to the Division of Water Quality as required by the
General Permit.
The BMP controls (silt fence, berm, vegetated swales ect) shall be inspected, at least weekly and within
24 hours following a storm event which produces discharge. All maintenance of these BMP measures
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shall be documented. The maintenance shall include, but is not limited to good housekeeping, repair of
measures, cleaning out and maintaining the dewatering/settling basin. 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 to correct the
problem, prior to resuming the mine dewatering operation.
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