NCG020927_NOI Replacement Pages_20180917

NCG020000 N.O.I.
23) List discharge points (outfalls) that convey discharge from the mine site (both on-site and off-site) and
location coordinates. Attach additional sheets if necessary, or note that this information is specified
on the site plan. Include proposed maximum daily flow rate for each wastewater outfall.
You must show all discharge points clearly on the submitted site plan. Be advised
that NCDEQ may require you to apply for an individual permit, based on proposed
discharge rates and receiving stream conditions (low flows, impairments, etc.)
Stormwater
Stormwater Outfall No. 1
Latitude (degrees/minutes/seconds or decimal degrees):
36.296124 deg
N
SW outfall
#1 has been
Longitude (degrees/minutes/seconds or decimal degrees):
-76.290073 dea
W
relocated
to same as
Stormwater Outfall No.
Latitude (degrees/minutes/seconds or decimal degrees):
WW Outfall
#1 because of
Stormwater Outfall No. 2
Mine Dewatering
reclamation
of affected
Latitude (degrees/minutes/seconds or decimal degrees):
36.296034 deg
N
area.
Longitude (degrees/minutes/seconds or decimal degrees): -76.290066 deg
Longitude (degrees/minutes/seconds or decimal degrees):
-76.290928 deg
W
Outfalls #2
& #3 no
Latitude (degrees/minutes/seconds or decimal degrees):
N
Longitude (degrees/minutes/seconds or decimal degrees):
longer in
service Sept
Stormwater Outfall No. 3
2018, area
reclaimed to
Latitude (degrees/minutes/seconds or decimal degrees):
36.295945 deg
N
cultivated
field and is
Longitude (degrees/minutes/seconds or decimal degrees):
-76.291775 deg
W
outside of
affected area.
Stormwater Outfall No
Latitude (degrees/minutes/seconds or decimal degrees):
N
Longitude (degrees/minutes/seconds or decimal degrees):
W
Stormwater Outfall No.
Latitude (degrees/minutes/seconds or decimal degrees):
N
Longitude (degrees/minutes/seconds or decimal degrees):
W
Stormwater Outfall No.
Latitude (degrees/minutes/seconds or decimal degrees):
N
Longitude (degrees/minutes/seconds or decimal degrees):
W
Mine Dewatering
Mine Dewatering (Wastewater) Outfall No. 1
Proposed maximum flow rate: 500 gal/hr - rainfall driven
Latitude (degrees/minutes/seconds or decimal degrees): 36.296353 deg
N
Longitude (degrees/minutes/seconds or decimal degrees): -76.290066 deg
W
Mine Dewatering (Wastewater) Outfall No.
Proposed maximum flow rate:
Latitude (degrees/minutes/seconds or decimal degrees):
N
Longitude (degrees/minutes/seconds or decimal degrees):
W
Process Wastewater
Process Wastewater Outfall No. Wastewater Description:
Proposed maximum flow rate:
Latitude (degrees/minutes/seconds or decimal degrees): N
Longitude (degrees/minutes/seconds or decimal degrees): W
Process Wastewater Outfall No. Wastewater Description:
Proposed maximum flow rate:
Latitude (degrees/minutes/seconds or decimal degrees): N
Longitude (degrees/minutes/seconds or decimal degrees): W
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NCG020000 N.O.I.
24) Help us understand what will happen to the dewatering water at this mine site:
❑ N/A — this mine is not dewatering at all and will not dewater in the future. water draining fron site by
efforts of the mine operator.
a) Will this mine be dewatering and discharging to waters of the state? (Answer only if dewatering)
❑ No
® Yes If yes, where to? ❑ Surface Waters and/or Wetlands (on-site or off-site)
© Other (on-site or off-site) Describe: Ditch to Knobbs Creek and Pasquotank
River
b) Will this mine be dewatering but not discharging to waters of the state? (Answer only if dewatering)
❑x No
❑ Yes If yes, explain how you are dewatering, and where that water will be directed:
25) Are there wetlands or surface waters within 400' of the mine pit perimeter?
❑ No
® Yes If yes, what distance are they from the mine pit perimeter? 40 feet.
Note: removal of stockpiles only, no excavated pit.
26) Will mining operations require dewatering near wetlands or other waterbodies, and will dewatering
potentially impact any wetlands or other waterbodies?
® No, dewatering will not occur near (within 400') of wetlands or other waterbodies (e.g., streams, lake, etc.)
❑ Yes, dewatering will be near wetlands or other waterbodies
Wetlands must be CLEARLY DELINEATED on the site plan. Mine dewatering activities that
have the potential to drain wetlands or otherwise impact surface water or groundwater MUST develop and
implement a Pumping Operation and Monitoring (POM) Plan that has been approved by the
Department.
For sites that may drain wetlands — approval of a POM Plan may be required prior to coverage under
this permit. The POM Plan should be submitted to the appropriate Regional Office and in all cases must be
approved prior to operation.
The plan shall include, but is not limited to: (1) Groundwater monitoring strategies to demonstratethe effect of
pumping and to establish any pumping regime necessary to reduce impacts, and (2) Detailed plans to maintain
surrounding hydrology and respective monitoring to demonstrate compliance. See checklist at the end of the
application. Contact the Regional Office for questions specific to your mine.
27) Have you been required to obtain 404/401 Certification permits?
,
❑ Yes If yes, please briefly describe below (include information such a required mitigation, BMPs,
setbacks, and/or O&M plans for on or off-site wetlands or other pertinent information). Attach other sheets as
necessary:
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NCG020000 N.O.I.
28) Have you been required to obtain a wetland delineation certified by the US Army Corps of Engineers?
® No ❑ Yes If yes, please attach to application submission.
Stormwater BMPs and Vehicle Maintenance:
29) Does this facility employ best management practices for stormwater control?
❑ No ® Yes If yes, please briefly describe:
Rock dam control device to grass swale, rock dam control device to ditch
30) Does this facility have a Stormwater Pollution Prevention Plan?
❑ No ❑ Yes If yes, when was it implemented? Note: SPPP under development now.
31) Are vehicle maintenance activities (VMA) occurring or planned at this mine site?
❑ No ❑Yes, If yes, will VMA area runoff discharge into the wastewater treatment system(s)?
❑ No, VMA runoff will discharge separately through a stormwater outfall
❑ Yes, VMA runoff will drain back to the mine pit or other wastewater system
Wastewater Treatment Facilities:
32) Will mine dewatering occur? (Yes, we are asking about dewatering again.)
❑ No
0 Yes If yes, will the mine discharge this water? Rainfall driven wastewater drainage.
33) Will this facility wash mined materials?
© No
❑ Yes If yes, will the mine discharge this water?
34) Will discharges of process wastewater treatment systems occur (including possible recycle system
overflows)?
0 No
❑ Yes If yes, describe what kind of systems:
35) Will this facility employ chemical additives to flocculate suspended solids?
0 No
❑ Yes If yes, provide the name, manufacturer, and the quantity of average daily usage of the chemical
additive (if known):
Note: Please see our website for a list of evaluated polyacrylamide (PAMS) products for use in North
Carolina: http://portal.ncdenr.org/web/Ir/construction-stormwater
36) Will any of the wastewater treatment facilities at this mine overflow only during rainfall events that
exceed the 10 -yr, 24 -hr rainfall event?
❑ Yes If yes, which treatment systems are those?
0 No, all wastewater treatment facilities will discharge more frequently (i.e., during smaller rain events)
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NCG020000 N.O.I.
37) Are wastewater treatment facilities (including recycle systems) planned in the 100 -year flood plain?
® No
❑ Yes
38) A WaSt@Wat@P treatment alternatives reviewis required by 15A NCAC 2H.0105 (c)(2)
11''E for any new or expanding water pollution control facility discharges in North Carolina. You may
attach additional sheets. List the types of wastewater this mine site will discharge:
121 Mine Dewatering Rainfall driven wastewater drainage from aboveground mine face.
❑ Process Wastewater (such as washing or recycle system overflows, other mining activity wastewater)
a) What wastewaters were considered for this alternatives review? ® Dewatering ❑ Process WW
b) Connection to a Municipal or Regional Sewer Collection System:
i) Are there existing sewer lines within a one -mile radius? ..................................... ® Yes ❑ No
(1) If Yes, will the wastewater treatment plant (WWTP) accept the wastewater? .... ❑ Yes ❑ No
(a) If No, please attach a letter documenting that the WWTP will not accept the wastewater.
(b) If Yes, is it feasible to connect to the WWTP? Why or why not?*
Not feasible, small amount of wastewater drainaqe would not justify the
cost of sewer construction, wastewater drainage ditch already flows into
nearby permitted storm water pond outside of this permit area.
c) Closed-loop Recycle System (meets design requirements of 15A NCAC 2T.1000):
i) Are you already proposing a closed-loop recycle system (CLRS)? ......................... ❑ Yes ® No
(1) If Yes, for what type of wastewater at this mine site? ❑ Dewatering ❑ Process WW
(2) If No, is this option technologically feasible (possible)? Why or why not?*
Not feasible, no pit, object is to remove or drain rain -driven stormwater
in contact with active mine face from aboveground active mine area.
(3) If No, is it otherwise feasible to build a CLRS at this site? Why or why not?*
Not feasible, no pit, object is to remove or drain rain -driven storm water
in contact with active mine face from aboveground active mine area.
(4) What is the feasibility of building a CLRS compared to direct surface water discharge?*
Not feasible, surface water discharge is only way to permanently remove
buildup of rain -driven storm water and wastewater.
d) Surface or Subsurface Disposal System (e.g., spray irrigation):
i) Is a surface or subsurface disposal technologically feasible (possible)? ..................... © Yes ❑ No
Why or Why not?* Subsurface disposal not feasible because of high groundwater
levels in area. Surface disposal is feasible by diversion of drainage ditch
to adjacent cultivated field in a level -spreader type system.
ii) Is a surface or subsurface disposal system otherwise feasible to implement?*............ ❑ Yes ® No
Why or why not?* Subsurface disposal not feasible - high groundwater levels.
Surface discharge to adjacent cultivated field not feasible because of potential
flooding causing disruption of cultivation and harvesting.
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NCG020000 N.O.I.
iii) What is the feasibility of employing a subsurface or surface discharge as compared to a direct
discharge to surface waters?* Direct discharge to surface water with treatment of
discharged wastewater is more feasible. Installation of sedimentation
control device (rock dam overflow) in existing single point discharge ditch
will give better results of sedimentation value & a good monitoring point.
e) Direct Discharge to Surface Waters: Is discharge to surface waters the most environmentally sound
alternative of all reasonably cost-effective options for the wastewaters being considered?*
® Yes ❑ No
f) If this review included all wastewater discharge types, would excluding some types (e.g. mine
dewatering) make any of the above non -discharge options feasible for some of the wastewaters?
❑ Yes ® No
* Feasibility should take into account initial and recurring costs. You may be asked to provide
further information to support your answers to these questions after the initial review.
Other:
39) Hazardous Waste:
a) Is this facility a Hazardous Waste Treatment, Storage, or Disposal Facility?
❑ No ❑ Yes
b) Is this facility a Small Quantity Generator (less than 1000 kg. of hazardous waste generated per month) of
hazardous waste?
® No ❑ Yes
c) Is this facility a Large Quantity Generator (1000 kg. or more of hazardous waste generated per month) of
hazardous waste?
© No ❑ Yes
d) If you answered yes to questions b. or c., please provide the following information:
Type(s) of waste:
How is material stored:
Where is material stored:
How many disposal shipments per year:
Name of transport / disposal vendor:
Vendor address:
40) Is your facility providing appropriate secondary containment for bulk storage of liquid materials? (See
permit text for secondary containment requirements.)
® No
❑ Yes
41) Does your site have an active landfill within the mining permit boundary?
® No
❑ Yes If yes, specify type: ❑ LCID (Land Clearing and Inert Debris) ❑ Other:
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SWU-NCG02-NOI Last revised 9/10/2015