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HomeMy WebLinkAbout20221103_NPDES_NOI FOR AGENCY USE ONLY NCG02 Assigned to: ARO FRO MRO RRO WARO WIRO WSRO Division of Energy, Mineral, and Land Resources Land Quality Section National Pollutant Discharge Elimination System NCG020000 Notice of Intent This General Permit covers STORMWATER AND/OR WASTEWATER DISCHARGES associated with activities under SIC(Standard Industrial Classification)Code 14[Mineral Mining Industry]except for:peat mining, coal mining, metal mining,oil and gas extraction, tourist gem mines,NCDOT borrow pits, in-stream sand mining,and discharges from mining operations which are intermixed on site with stormwater from concrete operations. You can find information on the DEMLR stormwater Program at deq.nc.gov/SW. Directions: Print or type all entries on this application. Send the original,signed application with all required Items listed in Item(9)below to: NCDEMLR Stormwater Program,1612 MSC,Raleigh,NC 27699-1622. The submission of this application does not guarantee coverage under the General Permit. Prior to coverage under this General Permit a site inspection will be conducted. 1. Owner/Operator(to whom all permit correspondence will be mailed): Name of legal organizational entity: Legally responsible person as signed In Item(10)below: Alvin R Smith Alvin R Smith Street address: City: State: Zip Code: 500 Jonestown Road Columbia NC 27925 Telephone number: Email address: 252-796-1910. 252-796-7558 smithdemo3@gmail.com Type of Ownership: Government ❑County ❑Federal ❑Municipal ❑State Non-government ❑Business(if ownership is business,a copy of NCSOS report must be included with this application) ®Individual 2. Industrial Facility(facility being permitted): Facility name: Facility environmental contact: Buddy Smith Mine Kenneth Elliott, Elliott qons ling Street address: City: State: Zip Code: 00000 Travis Road Columbia NC 27925 Parcel Identification Number(PIN) County: 870-974-0362 Tyrrell Telephone number: Email address: 252-796-1910,252-796-7558 smithdemo3@gmail.com Latitude of entrance: Longitude of entrance: 35.906306 N -76.273719 W 4-digit SIC code: Facility is: Date operation is to begin or began: ❑ New ® Proposed 1442 ❑ Existing November 2022 Types of minerals mined at this facility: ❑Clay ❑ Feldspar Ore ❑ Lithium Ore ❑ Phosphate ®Soil IN Construction Sand ❑ Industrial Sand ❑Other: Page 1 of 11 Is this a processing-only facility for materials mined elsewhere? Is this an inactive mine site? ❑Yes ❑Yes 29 No ® No Does total area of this mine site include ready-mixed concrete plant and/or asphalt plant areas? ❑Yes,and has separate NPDES stormwater permits(provide permit numbers): ❑Yes,and does not have separate NPDES stormwater permits d No Does this facility already have a valid Mining Permit from DEMLR's Land Quality Section? ❑Yes(please provide the Mining Permit Number) ® No(please Indicate the status of the Mining Permit application) Mining permit application has been submitted. Are you applying for a discharge permit in the same location as a previously permitted mine? ❑Yes(please provide permit number and mine name) 31 No If the stormwater discharges to a municipal separate storm sewer system(MS4),name the operator of the MS4: ® N/A 3. Consultant(if applicable): Name of consultant: Consulting firm: Kenneth Elliott Elliott Consulting Street address: City: State Zip Code PO Box 112,202 Elliott Road Aydlett NC 27916 Telephone number: Email address: 252-339-9021 ken@kenobx.com 4. Development Activities and Buffers Mining operation will precede development activities at this site: ❑Yes 91 No Mine is located within one of the 20 Coastal Counties,and will it add more than 10,000 ftz of impervious surface: ❑Yes(to both) ® No,this mine is within one of the 20 Coastal Counties,but will not at more than 10,000 ftz of impervious surface ❑ No,this mine is not within one of the 20 Coastal Counties Mine is In the Neuse,Tar-Pamlico,or Catawba River Basins,OR in the Randleman orJordan Water supply Watersheds? ❑Yes(specify size pf stream buffers) IR No Mine site will include wastewater discharges from a ready-mix concrete batch plant? ❑Yes(please seek additional coverage under General Permit NCG140000:Ready-Mix Concrete) ® No S. Mine Dewatering Mine dewatering will occur at this site: 91 Yes ❑ No(mark N/A for the rest of this section) Mine dewatering from this facility will be discharged to: ®Surface Waters and/or Wetlands ❑Other(specify) ❑Mine will not discharge dewatering to Surface Waters and/or Wetlands;specify how dewatering will occur and where water will be directed: ❑N/A Page 2 of 11 Wetlands and/or Surface Waters are within 400'of the mine pit perimeter: 404/401 Certification permits required: ®Yes(specify distance) 350 ft ❑Yes(briefly describe) ❑ No ® No ❑N/A ❑ N/A Have you been required to obtain a wetland delineation certified by the US Army Corps of Engineers? ❑Yes(please attach to this application) ® No 6. Wastewater Treatment Will this facility wash mined materials? ❑Yes IN No Will discharges of process wastewater treatment systems occur(including possible recycle system overflows) ❑Yes(please describe) M No Will this facility employ chemical additives to flocculate suspended solids? ❑Yes(specify name/manufacturer/quantity of daily use) 21 No Note:please visit:httos://files.nc.gov/ncdea/Water+Quality/Environmental+Sciences/ATU/PAMS 30 18.odf for list of approved PAMS 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(specify which systems) ® No Wastewater treatment facility will discharge more frequently(i.e. during smaller rain events). Are wastewater treatment facilities(including recycle systems)planned In the 100-year flood plain? @ Yes ❑No Wastewater Treatment Alternative Review as required by 15A NCAC 2H.0105(c)(2) Types of wastewater this mine site will discharge: IN Mine Dewatering ❑ Process Wastewater Types of wastewater considered for this alternative review: 0 Mine Dewatering ❑ Process Wastewater Are there existing sewer lines within a one-mile radius? ❑Yes ❑Wastewater treatment plant will accept wastewater ❑ Is feasible to connect(explain) ❑Is not feasible to connect(explain) ❑Wastewater treatment plant will not accept wastewater(please attach letter documenting this) ® No Page 3 of 11 Are you already proposing a closed-loop recycle system(CLRS)that meets design requirements of 15A NCAC 2T.10000? ❑Yes,for dewatering ❑Yes,for process wastewater ❑Yes,for both ❑No,this option is technologically feasible(explain) 10 No,this option is not technologically feasible(explain) Inadequate space for system. ❑ No,this option is otherwise feasible(explain) ❑No,this option is otherwise not feasible(explain) What is the feasibility of building a CLRS compared to direct surface water discharge? Building and maintaining a treatment system prior to discharge is more feasible than a CLRS. Surface or Subsurface Disposal System ❑A surface or subsurface disposal system is technologically feasible(explain) •A surface or subsurface disposal system is not technologically feasible(explain) Inadequate space and power source. ❑A surface or subsurface disposal system is otherwise feasible to implement(explain) ❑A surface of subsurface disposal system is not otherwise feasible to implement(explain) What is the feasibility of employing a subsurface of surface discharge as compared to a direct discharge to surface waters? Building and maintaining a treatment system prior to discharge is more feasible than a subsurface or surface discharge system. Direct Discharge to surface waters is the most environmentally sound alternative to all reasonably cost-effective options for the wastewaters being considered? In Yes ❑ No If this review included all wastewater discharge types,would excluding some types make any of the above non-discharge options feasible for some the wastewaters? ❑Yes El No 7. Outfalis(s)At least one outfall is required to be eligible for coverage. 3-4 digit identifier: Name of receiving water: I Classification: ❑This water is impaired. SDO-1 Scuppernong River,Albemarle Soundl SC, SB ❑This watershed has a TMDL Discharge from this outfall is from: ❑Stormwater ® Mine Dewatering ❑Process Wastewater 7Q10 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classed as HQW, ORW,Tr,WS-I,WS-II,WS-III,SA,or PNA): n/a Discharge occurs from this outfall: ❑Only during a rainfall event ®Intermittently(indicate how often) El Continuously(Indicate flow in CFS) Avg 12 hrs/day(daily upon need,3-4 Tim s per year) Latitude of outfall: Longitude of outfall: 35.901681 N -76.275118 W Brief description of the Industrial activities that drain to this outfall: Derwatering 7.70-acre sand mine excavation to 0.265-acre sediment pond to treat wastewater. Outfall is sediment pond overflom Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑Yes ® No If yes,how many gallons of new motor oil are used each month when averaged over the calendar year? 34 digit Identifier: Name of receiving water: Classification: ❑This water is Impaired. ❑This watershed has a TMDL. Page 4 of 11 ❑Only during a rainfall event ❑ Intermittently(indicate how often) ❑Continuously(indicate flow in CFS) Latitude of outfall: Longitude of outfall: Brief description of the industrial activities that drain to this outfall: Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑Yes ❑ No If yes,how many gallons of new motor oil are used each month when averaged over the calendar year? All outfalls must be listed and at least one outfall is required.Additional outfalls may be added in the section "Additional Outfalls"found on the last page of this N01. 8. Other Facility Conditions(check all that apply and explain accordingly): ❑This facility has other NPDES permits. If checked,list the permit numbers for all current NPDES permits: We ❑This facility has Non-Discharge permits(e.g.recycle permit). If checked,list the permit numbers for all current Non- Discharge permits: n/a ®This facility uses best management practices or structural stormwater control measures. If checked,briefly describe the practices/measures and show on site diagram: Gravel construction entrance sediment pond riprap outfall protection, berm around active areas of mine direct stormwater into it. ®This facility has a Stormwater Pollution Prevention Plan(SWPPP). If checked,please list the date the SWPPP was implemented: SWPPP in development now. ❑This facility stores hazardous waste In the 100-year floodplain. n/a If checked,describe how the area is protected from flooding: ❑This facility is a(mark all that apply) n/a ❑ Hazardous Waste Generation Facility ❑ Hazardous Waste Treatment Facility ❑ Hazardous Waste Storage Facility ❑ Hazardous Waste Disposal Facility If checked,indicate: Kilograms of waste generated each month: Type(s)of waste: How material is stored: Where material is stored: Number of waste shipments per year: Name of transport/disposal vendor: Transport/disposal vendor EPA ID: Vendor address: ❑This facility Is located on a Brownfield or Superfund site n/a If checked,briefly describe the site conditions: ❑ Facility provides appropriate secondary containment for bulk storage of liquid materials n/a If checked,briefly describe these measures: ❑Site has an active landfill within the mining permit boundary n/a If checked,please indicate type: a) ❑ LCID(Land clearing and Inert Debris) b) ❑ other(specify) Page 6 of 11 9. Required Items (Application will be returned unless all of the following Items have been included): ®Check for$100 made payable to NCDEQ ❑Copy of most recent Annual Report to the NC Secretary of State(if applicable) 91 This completed application and any supporting documentation 11 Copy of the approved mining permit or indication of mining permit application status ❑Copy of US Army Corps—approved wetland delineation(if applicable) * Une drawing of the water flow through the facility or block flow diagram ❑ Pictorial description of the nature of any sources of water and any collection and treatment measures El A site diagram showing,at a minimum,existing and proposed: a) outline of drainage areas b) surface waters c) stormwater management structures d) location of stormwater outfalis corresponding to the drainage areas e) runoff conveyance features f) areas where process materials are stored g) Impervious areas h) site property lines M 2 copies of large scale(24"x36"minimum)site plan showing: a) topographical lines b) all outfall locations c) applicable buffers and delineated wetlands d) receiving waters e) 100• ear flood plain(if applicable) 10 Copy of county map or USGS quad sheet with the location of the facility clearly marked If mines site is in one of the 20 Coastal Counties(if applicable) ®Applicant has check with the appropriate regional office to verify the need for a Coastal State Stormwater permit. a) Indicate the Regional Office Contact: Carl Dunn,WaRO,09-13-2022 ❑ Detailed list of: a) impervious surface areas and percentages b) sub-drainage areas c) total drainage area If mine is dewatering and near wetlands,or may otherwise impact surface waters or groundwater M 2 copies of large scale(24"x36"minimum)plans delineating areas on the listing acreage including: a) wetlands b) ditches c) well-placements d) pits e) borrow areas f) overburden storage g) stormwater controls/BMPs h) vehicle maintenance areas 1) settling basins J) product process(such as screening,stockpiles,and waste piles) k) total drainage area 1) impervious surface percentages(if state Stormwater programs apply) m) applicable buffers n) access and/or haul roads M Pump dewatering size and information on its specifications Page 7 of 11 ❑ Well information(design,depths,maintenance) ❑ Physical monitoring for the wetland areas ®Settling pond size information,if applicable ❑ Level spreader design,if applicable ® Details about dewatering method ❑Cone of influence calculations ® Description of measures to prevent erosion and Flooding ❑ Description and information about 401/404 permits that have been obtained ❑Copy of US Army Corps of Engineers wetlands delineations or approved wetland delineation(if applicable) ® I have contacted my local regional office about a Pumping Operation and Monitoring(POM)plan a) Regional Office Contact: Cad Dunn,WaRO b) Date Contacted: 09-13.2022 10.Applicant Certification: North Carolina General Statute 143-215.6E(1)provides that: Any person who knowingly makes any false statement, representation,or certification in any application,record,report,plan,or other document filed or required to be maintained under this Article or a rule implementing this Article...shall be guilty of a Class 2 misdemeanor which may include a fine not to exceed ten thousand dollars($10,000). Under penalty of law,I certify that: IN I am the person responsible for the permitted industrial activity,for satisfying the requirements of this permit,and for any civil or criminal penalties incurred due to violations of this permit ®The information submitted in this NO1 is,to the best of my knowledge and belief,true,accurate,and complete based on my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information. ®1 will abide by all conditions of the NCG020000 permit,I understand that coverage under this permit will constitute the permit requirements for the discharge(s)and Is enforceable in the same manner as an individual permit. ®1 hereby request coverage under the NCG020000 General Permit. Printed Name of Applicant: Alvin R. Smith Title: Owner/Operator j4z0rdA—r09/15/2022 (Signature of Applicant (Date Signed) Mail the entire package to: DEMLR—Stormwater Program Department of Environmental quality 1612 Mail Service Center Raleigh, NC 27699-1612 Page 8 of 11 PUMPING OPERATION AND MAINTENANCE PLAN SAND MINE DEWATERING WITH SEDIMENTATION POND Operator: Alvin R.Smith,500 Jonestown Rd.,Columbia, NC 27925 Job Location: Buddy Smith Mine,00000 Travis Road,Columbia, NC 27925 County: Tyrrell County Prepared by: Ken Elliott,consulting Date: October 26,2022 This plan defines responsibilities for operating, inspecting,and maintaining equipment and structures used for dewatering the Buddy Smith Mine safely,and that dewatering will not degrade or negatively impact any wetlands or waters of the state. Description and Current State of the Buddy Smith Mine Site and Mining Application: The Buddy Smith Mine is a proposed 7.70-acre sand mine excavation to be operated by Alvin R. (Buddy) Smith,applicant,in a 20.27-acre permit area,of which 11.62 acres will be affected,located 1.5 miles southwest of Columbia, NC on Travis Road in Tyrrell County.The permit area is on cultivated,sandy land at 2-3-ft elevation,owned by the applicant, located adjacent to a canal/tributary of the Scuppernong River. At this time Mr.Smith is applying for a mining permit with the NCDEQ Division of Energy,Mineral and Land Resources to construct the sand mine and begin operation in November or December 2022. An NPDES General Permit application for dewatering is being submitted to NCDEQ, registration for water usage has been submitted to the Division of Water Resources. Stormwater Pollution Prevention Plan is under development and will be implemented upon approval of the discharge permit application. Sand Mine Dewatering: It will be necessary to dewater the pond as it is being excavated to allow excavating equipment to enter the area safely and efficiently remove the sand from the pond bottom. This will allow for full permitted depth of excavation of the pond and proper reclamation of the edges of the pond. It is the intention of the operator to only dewater the excavation as needed,which will not entail full-time dewatering. For excavation purposes,dewatering will occur intermittently three to four times per year. The operator plans to excavate approximately 25,000 cubic yards of sand at a time while dewatering and stockpile it for later usage. Once the stockpiled sand is depleted,the operator will dewater the excavation again and remove another quantity of sand. Mine dewatering wastewater will be treated before release to the Waters of the State. Use of a sedimentation pond separate from the excavated mine is a traditional and effective means to remove sediment from wastewater generated during mine dewatering operations. Sedimentation Pond Construction and Overflow Discharge: The operator plans to construct a 0.265-acre(30'wide x 385' long)above-ground sedimentation pond located 25 feet southwest of the main excavation area. The aboveground pond will have 6-ft tall berms around the pond with 3:1 exterior slope and full groundcover,and interior 2:1 slope. The pond berms will have a minimum 1.5 feet of freeboard between the water surface and the top of the sediment pond bank. The sediment pond will be located between the proposed mine site field and a 6-ft wide groundwater leveling canal into which the sediment pond will overflow during dewatering activity.This canal is regulated for water height by the Tyrrell County Water Management Committee and is part of the Riders Creek/Travis Special Use Water Management District.This SUWMD designated primary"C" canal is directly connected to Scuppernong River located one mile east. Water height in the primary"C" canal is kept naturally full by its direct connection with Scuppernong River. Sediment pond water level will be controlled by a half-pipe flash-board water height control device installed in the southwest corner of the sediment pond berm.This control structure will allow water to flow across the flash boards into a 25ft long x 15"wide buried PVC discharge pipe running westward through the berm 20 feet to a discharge outlet on the shoreline of the groundwater levelling canal draining 5200 feet to Scuppernong River(SC). From there,discharge water will flow 5.7 miles through the Scuppernong River(SC)to Albemarle Sound(SB). Dewatering Procedure: The operator will install a 6-inch dewatering pump between the main excavation and sediment pond at the southwest end of the excavation. Discharge from the dewatering pump will enter the sediment pond at its northeast corner,and there will be a constructed half-pipe flash board water height control device(see attached diagram)discharge point located on the southwest corner of the sediment pond. The discharge point will release clear water through the water-height control device into the existing foliated primary"C"canal which will drain to Scuppernong River. Water will be pumped from the excavated pond to the sediment pond by the 6-in gasoline-powered transfer pump operating at idle speed,approximately 1100 rpm. Estimated maximum flow from the pump will be 15,000 gallons/hour,operating 12 hours per day,0.180-mgd. It is the intention of Mr. Smith to drop the water level in the excavation approximately 20-25 feet below normal ground level as needed. Time and distance will allow all sedimentation to occur to acceptable levels before the overflow water reaches outfall and then the waters of the State.Water will have to travel a minimum of 350 feet to reach the overflow point which will give enough surface area to allow sufficient sedimentation to occur. There will be a minimum 1.5 feet of freeboard between the water surface in the sediment pond and the top of the sediment pond bank. Stormwater drainage will be unable to enter the sediment area and damage the sediment pond rates,due to the height of a surrounding 2-ft tall sediment pond berm. Wetlands Protection: Removing water from the excavation using an aboveground sedimentation pond with overflow is a valid dewatering method for this size pond. The excavation can be dewatered quickly,and water removed from the excavation will be used to uniformly hydrate adjacent wetlands. Once dewatered,excavation activity will be focused on removing sand as quickly as possible to shorten the periods of dewatering. This will allow groundwater level in the pond to return to normal as soon as possible to lessen possible impacts to adjacent wetlands,once dewatering ceases. Groundwater Control: Groundwater levels are not expected to impact areas outside of the immediate excavated dewatering area.Groundwater levels are expected to remain stable despite dewatering of the excavation. The excavation site is surrounded on three sides by canals kept naturally full by direct drainage connection to Scuppernong River. Groundwater level depletion is not expected to affect any neighboring groundwater wells.The closest residence to excavation is located 1030 feet from the proposed excavation. The area is served by Tyrrell County Water System. Sedimentation and Erosion Control: The operator will maintain a 35-ft wide unexcavated buffer on the north,south,east,and west sides of excavation activity. All erosion and sedimentation will remain inside the permit area.The operator will construct and maintain an 10-ft wide x 2-ft tall grass-covered sand berm around the perimeter of the current affected area of the excavation during all phases of operation,inside the unexcavated buffer.Stormwater falling inside the active mining area will be directed to drain into the excavation. Maintaining the Dewatering Equipment and Erosion Control Measures: Inspections and maintenance are required to obtain the intended function of safely dewatering the sand mine,and to maintain the life of any nearby wetlands or waters of the State. Items to inspect and maintain during the anticipated 10-year life of the mine dewatering permit are: • Inspect embankments, berms and appurtenant structures,and repair as needed. • Monitor overflow ditches for damage or stoppage from beaver activity, repair as needed. • Repair any damage to vegetated areas or berms with compacted earth fill,reshaping,sodding, reseeding,and mulching as needed. • Promptly repair all leaks in delivery facilities by replacing valves,fittings,gaskets,and worn or damaged parts. • Maintain all screens,filters,valves,timers,and other electrical and mechanical equipment in good operating condition,following manufacturer's recommendations Monitoring the Dewatering Process and Effects of Dewatering: Analytical and qualitative monitoring of mine dewatering wastewater will be in accordance with the NCG020000 permit,as follows: • Buddy Smith Mine will discharge mine dewatering wastewater into Scuppernong River,classified as SC,and Albemarle Sound,classified as SB. Discharge water will be analyzed quarterly per requirements of the NPDES permit. • Discharge water will be sampled and analyzed for pH,Settleable Solids(SS),Total Suspended Solids(TSS),turbidity,salinity,and Enterococcus bacteria. Samples with benchmark exceedances will require the operator to increase sampling, per NPDES permit,until sample results are cleared. • All excavated ponds in the Buddy Smith Mine permit area will be inspected daily by the operator to identify any abnormal conditions. • All berms and erosion control structures will be inspected for damages monthly and within 24 hours after every storm event greater than 1.5 inches,and all structures will be repaired immediately. • Special inspections will be conducted immediately following severe storms,vandalism,and other significant events. • Dewatering process will be inspected daily during periods of dewatering the excavation. • Rain gauge data will be collected by monitoring local rain gauge data monthly and after each rain event. Wetlands Monitoring: Wetlands are located northward and southward of the proposed Buddy Smith Mine site. Level 1 wetlands landscape assessment by US Fish&Wildlife Service indicate three types of wetlands on the Smith parcel: • Seasonally saturated, Palustrine scrub/shrub needle-leaved evergreen forested wetlands,450 ft south and 350 ft northwest of excavation boundary. • Seasonally saturated, Palustrine evergreen&deciduous forested wetlands,715 ft south of excavation boundary. • Seasonally flooded, Palustrine deciduous forested wetlands,800 ft north of excavation boundary. Level 2 wetlands assessment has not been performed on the site,due to presence of permanently flooded groundwater lowering ditches connected to flooded"C"channels between the excavation area and adjacent wetlands. Flooded ditches will serve as hydration devices to help maintain normal groundwater levels. Operator will monitor drainage ditches weekly to always ensure presence of water in the ditch. Records Data will be collected as follows: • Visual monitoring of adjacent wetlands and farmland for potential dehydration during mining or dewatering activities will take place weekly. Solutions to any degradation caused by any mining activity will Include alteration of dewatering process. DWQ will be consulted as needed; alterations to process will be recorded. • Elliott Consulting will maintain the following records in a permanent file at the Elliott Consulting office at PO Box 112, 202 Elliott Road,Aydlett, NC 27916: a record of all significant actions taken;as-built drawings; permits;analytical results from sampling;and related material. Copies of all inspections, monitoring reports and lab analyses shall be provided to NCDWQ on a regular basis and as requested. BMP Conditions • The permittee will utilize best management practices to ensure that dewatering the Buddy Smith Mine will not degrade or negatively impact any wetlands or waters of the State. BMP's will include: o All berms and erosion control and sedimentation control structures will be inspected for damages monthly and within 24 hours after every storm event greater than 1.5 inches, and all structures will be repaired immediately. o Temporary gravel construction entrance will be maintained at foot of mine access road at intersection with Woodley Road. o Operator will maintain riprap outfall protection on the overflow drainage ditch downstream of sediment pond. o Groundcover will be established on all sections of the permit area when not in use by mining activities. Signed, << � 1Z Ken Elliott for Alvin R.Smith,owner Buddy Smith Mine,Columbia, NC October 26,2022