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HomeMy WebLinkAboutNCG020859_COMPLETE FILE - HISTORICAL_20140815STORMWATER DIVISION CODING SHEET NCG PERMITS PERMIT NO. /V DOC TYPE Iy" HISTORICAL FILE ❑ MONITORING REPORTS DOC DATE ❑ �DI�I n � I YYYYMMDD G iRD r_ _ i ..r.r ALA �. NC®ENR tA p s 15 2a�y North Carolina Department of Environment and Natural Resources Pat McCrory John E. Skvada, III -- Governor Secretary August 7, 2014 Mr. Allen Barnhill Barnhill Contracting Company P. 0. Box 1529 Tarboro, NC 27886 Subject: General Permit No. NCG020000 Howard Pit COC NCG020859 Onslow County Dear Mr. Barnhill: In accordance with your application for a discharge permit received on February 17, 2014, we are forwarding herewith the subject certificate of coverage to discharge under the subject state - NPDES general permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the US Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). This certificate of coverage is not transferable. if the facility changes ownership or is closed, the Division of Energy Mineral & Land Resources may require modification, revocation or reissuance of the certificate of coverage. Please be aware that mine dewatering at your site has the potential to impact adjacent wetlands. The specific requirements for mine dewatering at facilities near wetlands can be found in Part III, Section E of your permit. You must have an approved Operation anti Monitoring Plan before mine dewatering discharges occur at lour facility. Discharging mine dewatering wastewater without Plan approval will be subject to enforcement action. An Operation and Monitoring Plan for your facility must be submitted to the Wilmington Regional Office within 60 days of your receipt of this permit. Contact Dan Sams at the Wilmington Regional Office at (910) 796-7215 for more information about the approval process. This site will discharge to a receiving stream designated as High Quality Waters (HQW). As a result, a more stringent TSS limit and wastewater discharge volume applies. Division of Energy, Mineral, and Land Resources Energy Section • Geological Survey Section • Land Quality Section 1612 Mail Service Center, Raleigh, North Carolina 27699-1612.919-707-92001 FAX: 919-715-8801 512 North Salisbury Street, Raleigh, North Carolina 27604 • Internet: http://portal.ncdenr.org/webA An Equal Opportunity 1 Affirmative Action Employer — 50% Recycled 110% Post Consumer Paper Please note that mine dewatering wastewater includes wet pit overflows caused solely by direct rainfall and groundwater seeps for this type of mining operation. Any discharge of this water (and any stormwater commingled with it) is subject to the effluent limitations in this permit. This general permit allows the discharge of stormwater and certain types of wastewater from your facility. In your application, you specified that only mine dewatering water would be discharged from this facility. If separate point -source discharges of stormwater occur (i.e., stormwater not combined with mine dewatering water), you will be required to adhere to the conditions in this permit for stormwater discharges. This project is Iocated in one of North Carolina's 20 coastal counties. Coastal stormwater management rules (15A NCAC 2H .1000) may require an additional State Stormwater Permit (different from the NPDES mining activities discharge permit). Please contact Georgette Scott in the Wilmington Regional Office at (910)796-7335 to determine if you will be required to submit an application for a State Stormwater permit. This permit does not affect the legal obligation to obtain other permits which may be required by the Division of Energy, Mining, and Land Resources, or any other federal, state, or local authorities. If you have any questions concerning this permit, please contact Larry Wade PE at telephone number (919) 807-6375. Sincerely, for Tracy E. Davis, P.E. cc: Wilmington Regional Office Central Files Stormwater Permitting Program Files STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES GENERAL PERMIT NO, NCG020000 CERTIFICATE OF COVERAGE No. NCG020859 STORMWATER AND MINE DEWATERING DISCHARGES NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, Barnhill Contracting Company is hereby authorized to discharge stormwater and mine dewatering wastewater from a facility located at Howard Pit NC 24 Hubert City Onslow County to receiving waters designated as Queen Creek, a class SA;HQW water in the White Oak River Basin, in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts 1, 11, 111, IV, V, and VI of General Permit No. NCG020000 as attached. This certificate of coverage shall become effective August 7, 2014. This Certificate of Coverage shall remain in effect for the duration of the General Permit. Signed this day August 7, 2014. for Tracy E. Davis, P.E., Director Division of Energy, Mineral, and Land Resources By the Authority of the Environmental Management Commission may- � - - I� � � •, _�_ _ - a Mat r � C 1 � 1 d - B � Hi Howard Pit - I W01- 5 .:.. 1 � �MR �. NCG020859 N W E S Map Scale 1:24,O0O Barnhill Contracting Company Howard Pit Latitude: 340 43' 47" N Longitude: -77° 11' 45" W County: Onslow Receiving Stream: Queen Creek Stream Class: SA;HQW Sub -basin: 03-05-01 ([White Oak River Basin) O Facility Location ■ BARNHILL CONTRACTING COMPANY 2311 North Main Street PO sox 1529 Tarboro, North Carolina 27886 252-823-1021 Fax 252-823-0137 www.barnhilicontracting.com February 12, 2014 Mr. Dan Sams Environmental Regional Supervisor Division of Energy, Mineral, and Land Resources 127 Cardinal Drive Extension Wilmington, NC 28405 RE: Howard Pit Onslow County Operations and Monitoring Plan Dear Mr.. Sams: Please find enclosed a copy of an Operations and Monitoring Plan for a proposed borrow pit in Onslow County. I have submitted the entire application package to Raleigh, and was directed to send a copy of the plan to your attention. Should you require any additional information, please do not hesitate to contact us. Yours very truly, Barnhill Contracting Company Jonathan Proctor Estimator/Project Manager Enclosures BARNHILL CONTRACTING COMPANY 231 1 North Main Street PO Box 1529 Tartwro, North Carolina 27886 252-823-1021 Fax:252-823-0137 www.barnhillcontracting.com February 11, 2014 Mr. Bradly Bennett Stormwater and General Permits Unit Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 RE: Howard Pit Onslow County Operations and Monitoring Plan Dear Mr. Bennett: A We are submitting an Operations and Monitoring Plan for the Howard Pit in Onslow County, North Carolina based on our conversation February 11, 2014, to ensure that any dewatering activities that may occur in correlation with mining activities shall not have any adverse effects on any nearby jurisdictional wetlands that may be present on the property. Reference is made to the site plan that accompanies this Operations and Monitoring Plan, which illustrates the mining activities as they shall occur on the site. The type of discharge that will be present on the site will be mine dewatering. Reference is made to the site plan that illustrates the points of discharge from the mine. Barnhill Contracting Company proposes to dewater mining operations through the following sequence of events: 1) Erosion Control items will be installed prior to any mining activities on the site. Sediment Basins and Diversion Ditches will be installed per plan design before mining activities begin in the mining area. 2) Mining will begin in on the most western edge of the mine nearest the property line. Any topsoil in this area will be stripped and incorporated into the stockpile area as shown. The topsoil within this area will be used to build any slopes after mining this area. The topsoil stockpile will be seeded as needed to stabilize. We will strip areas as mining progresses to prevent unnecessary erosion from occurring. Diversion ditches will be utilized to divert shed water towards the sediment basin. 3) As mining activities extend below the water table, water will be pumped as needed into the borrow pit dewatering basin. As water is pumped into the basin, it will dewater through a riser and onto a rip rap outlet pad as shown on the plan. This discharge will then dissipate through the 50' undisturbed buffer to the on -site wetland. 4) After all mining activities in Phase I are complete, remaining topsoil stockpiled will be used to build the finished slopes of the pond to a grade of 3:1 or flatter above the water table, and permanently seeded. 5) Mining will then begin in the Phase I1 area in the same manner. Topsoil will be stripped as needed and stockpiled as mining progress. As mining activities extend below the water table in this area, water will be pumped into the existing dewatering basin. We will also use the newly created pond for storage of pumped water from the new mining area. Pumping will be shared between the on -site pond and dewatering basin as needed to ensure that discharge is kept to a minimum, if any at all. 6) After all mining activities in the 15.0 acre area are complete, any remaining topsoil stockpiled will be used to build the slopes of the pond to a grade of 3:1 or flatter above the water table, and permanently seeded. The proposed operation has been designed so that any overflow from dewatering activities or extreme rainfall events will take a natural course to the closest wetland. Water will be pumped at a rate not to exceed 936,000 gallons per day, as dictated by our CCPCUA withdrawal permit, utilizing a Thompson 6" submersible pump (model 46HST or comparable). The estimated volume of water withdrawal from dewatering activities will be recorded. Storm water will be managed within the pit utilizing silt fence, diversion ditches, sediment basins, buffers, and berms when topsoil is available. Reference is made to the site plan, which illustrates the design specifications and size of the sediment basin. There will be an undisturbed buffer established between the mine footprint edges and the jurisdictional wetland edge. The 50' undisturbed buffer along the edge of the mine limits will be adequately marked with orange safety fence to ensure that heavy equipment does not enter into this area and land disturbing activities do not occur. Barnhill Contracting Company will work to inspect and monitor the jurisdictional features that appear within the property boundary daily, during times that pumping and discharge are occurring. Barnhill Contracting Company will inspect and monitor the features to reaffirm the presence of the jurisdictional feature and soils, as well as, for the instability, erosion, sloughing, subsidence, collapse, newly formed sinkholes, wetland vegetation degradation, and/or flooding of ditch from discharge activities. Barnhill Contracting Company does not foresee any impacts to the adjacent features or wetlands, but will secure the appropriate 401 Permit if the need arises. Together with data collected by NCDENR- Division of Water Quality from their inspections, Barnhill Contracting Company and NCDENR- Division of Water Quality can determine if there are any detrimental impacts to the property's jurisdictional features. During inspections conducted by Barnhill Contracting Company, if there are any detrimental impacts to the property's wetlands discovered, Barnhill Contracting Company will immediately cease dewatering activities, and report the discovery to NCDENR- Division of Water Quality Washington Regional Office. Together, Barnhill Contracting Company and NCDENR- Division of Water Quality will determine how these impacts can be abated. Should you require any additional information, please do not hesitate to contact us. 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' -.��'� '�+}Q J; r'�'��•y� ? •�� ��i p. <,.� .> :r. 1 ,,,�. ta�-� • d.t r... �,}�."p.. ?i *�',;� i!.";, ,j` +t��,y y�,� -'y +.r�'y /•{��j/:j'`(� q� '�t�cr,�`' BEa• -�y�,' *�.r i" i t ^' s�r. ..0 .-.�i�-��'�.�e'F �r�J. �,. - v��:- .�, r• , �..�',. _ Y ;rC �,. ,a f. T'�. in..''�..-4... Y Y..; � � _ vJ f._..� :6+0:3'�`� !.! �} ` tY, �-. 71 #.. �xJ- .J r•�� STOCKPILE AREA BASIN DESIGN DRAINAGE AREA NO. AREA CF/S MIN VOL. I MIN SQ FTI DESIGN SQ FTI W I L I D I TOTALSF TOTAL VOL Stockpile Area 3.64 9.81 13104.00 4265.68 4368.00 4 94 3 4418 132 �Z PEYTONS RIDGE D �O OA, P� Q SITE / n w � z HU ERT BLVD NC HIGHWAY 24 (L SO�ILLS S&W CONCRETE 10 111 -�O JACK eORO VICINITY MAP NTS CATEGORY AFFECTED ACREAGE Tailings/Sediment Ponds 0.12 Stockpiles 3.64 Wastepiles 0.00 Haul Roads 2.90 Mine Excavation 15.00 Other (Explain) Unexcavated Buffers 0.96 Total Disturbed Acreage 22.62 1. Barnhill Contracting Company may relocate on -site haul road and topsoil stockpile as necessary to fit site conditions. 2. No buildings, structures, processing areas or lighting is proposed. No blasting will be used in mining operations. The site will be protected by a locked gate and wooded buffers. 3. Wetlands are shown on the northern portion of the permitted area. A 50' undisturbed buffer will remain in place along wetland line. 4. If stockpiles remain in lace for 7 days or more, they will be temporarily seeded anTm' ulched. 5. Check dams will be used as needed to control runoff from haul road. 6. All buffers in existing wooded areas will remain undisturbed, as shown. 7. All buffers in existing agricultural field areas will be unexcavated. 8. Existing woods located within the mining area will be cleared as mining progresses in those areas. 9. Borrow pit dewatering basin was sized according detail located on this sheet. Basin was sized using a 650 gpm pump with a 2 day detention time. AGRICULTURAL FIELD CONNIE TAYLOR SHARON & KIMBERLY HOWARD 30' EASEM . 1. 04/ L , 0•m SEE INSET "A" LYNN BELL EXISTING HAUL ROAD SHOWN ON SHEET 2 ONSLOW DEVELOPMENT, LLC m A �/ 0 ` WETLAND ` C i i i / aj STOCKPILE B WETLAND C/"Oapy i i i i i i i r 40 AREA WETLAND TN Al / WATERING BASIN \ p / PUMP LOCATION �. O O Q O ONSLOW DEVELOPMENT, LLC MINING AREA i TTI OPEN AREA PHASE II MINING AREA �� 9 PHASE I ' _.TOE/N F CHAD STRAWSER C# `rd�p% NO STRUCTURE BUILT / T( EKHART KOHKEMPER ' APPROXIMATE LOCATION / C OF STRUCTURE oRADrETo�DRAIN F � ❑ L__ 2 APPROXIMATE LOCATIO OF STRUCTURE 2S UNE%CCgVATEp B S�WII Nplly ` A EKHART KOHEMPER JL ROAD BUFF — /GHQ _ 1/1 ❑ EW PROPERTY LINE/EXieT,A,,. BELINDA & OTTIS HOWARD AGRICULTURAL FIELD NO STRUCTURE BUILT ERIC SMITH ONSLOW DEVELOPMENT GROUP O O O O O O O O O O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 C 0 C C C C C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0000000aD000 0 0 0 0 0 0 0 0 0 0 0 0 000000000000 000000000000000000000000 I�1110 LEGEND SILT FENCE TEMP. ROCK SILT CHECK "A" SILT FENCE OUTLET WETLAND TEMP. SILT DITCH SILT FENCE \ SILT FENCE 36" RCP \ INSET "A" NOTES: USE NO. 5 OR NO, 57 STONE FOR SEDIMENT CONTROL STONE, 3FT USE HARDWARE CLOTH 24 GAUGE WIRE MESH WITH 1141NCH MESH OPENINGS. I°- INSTALL 5 FT. SELF FASTENER ANGLE STEEL POST 2 FT, DEEP MINIMUM, ATTACH HARDWARE CLOTH TO POSTS WITH WIRE VARIABLE 1/4 WIRE MESH STAPLE OR OTHER ACCEPTABLE METHODS, DIMENSION SPACE POST A MAXIMUM OF 3 FT. FOR INSTALLATION BETWEEN SECTIONS OF SILT FENCE, EXTEND SEDIMENT CONTROL 2 FT( STONE A MINIMUM OF 12' ON EACH SIDE OF SPECIAL SEDIMENT CONTROL FENCE SECTION. BORROW PIT DEWATERING BASIN DETAIL CLASS A STONE GENERAL NOTES: DE: DETERMINE BORROW PIT DEWATERING BASIN SIZE USING r�LTI�T o� oeore�ri.e' coin III enure V 8.0203 • 0 • T, WHERE V IS VOLUME ( If G IS PUMP FLOW RATE (GPM) AND T IS DEWATERINO TIME (NA). USE MAXIMUM FLOW RATE OF 1000 GPM AND A MINIMUM DEWATERING TIME OF 2 HOURS. RISER SHALL BE A NON -PERFORATED, SMOOTH OR CORRUGATED STONE ENERGY T'°"0" DISSIPATOR MATERIAL WITH A FLASHBOARD OPTION. CONSTRUCT THE COIR FIBER BAFFLE IN ACCORDANCE WITH ROADWAY STANDARD DRAWING 1640.01 AND WITH MATERIAL THAT MEETS THE SPECIFICATIONS OF ROADWAY STANDARD 1060-14. PROVIDE 5' STEEL POSTS OF THE SELF -FASTENER W ANGLE STEEL TYPE. INSTALL STEEL POSTS WITH NO MORE THAN 3' OF THE POST APPEARING ABOVE THE GROUND. ATTACH THE COIR FIBER MAT TO THE STEEL N L POSTS WITH WIRE OR OTHER ACCEPTABLE MEANS "L" AND STAPLED INTO THE BOTTOM AND SIDE SLOPES OF THE BASIN WITH 12" STAPLES. ' 2"W" MIN. INSTALL TYPE 2 GEOTEXTILE ON SIDESLOPES AND BOTTOM OF BASIN AT INLET AS SHOWN IN THE DETAIL. USE THE TYPICAL SECTION SHOWN FOR THE BORROW PIT DEWATERING BASIN AS A GUIDE. THE EARTH DIKE BASIN MAY HAVE ANY TYPE CONFIGURATION AS LONG AS SUFFICIENT VOLUME IS PROVIDED AND PROVISIONS PLAN ARE MADE FOR A NON -PERFORATED RISER. RISER DO NOT EXCEED 31g FT. IN HEIGHT FOR THE EARTH DIKES REQUIRED FOR BORROW PIT DEWATERING BASIN. THE BORROW PIT DEWATERING BASIN SIZE I8 VARIABLE AND DEPENDENT ON SPECIFIC SITE REQUIREMENTS AS WELL AS PROPOSED CONSTRUCTION OPERATIONS. 1, 0„� r 8„ �( r 1-0"a SUBMIT THE SIZE, LOCATION AND RISER PIPE 1 11y' MATERIAL FOR APPROVAL PRIOR TO CONSTRUCTION. 'y T" 1r PUMP THE EFFLUENT INTO THE BORROW PIT DEWATERING _ BASIN TO A MAXIMUM DEPTH OF 6 IN. BELOW TOP OF UNCLASSIFIED EARTH DIKE. EARTH MATERIAL ANTI -SEEP COLLAR PROVIDE A STONE ENERGY PAD AT THE m COIR FIBER BAFFLE STEEL P03T3 DISCHARGE OUTLET OF THE PUMP DISCHARGE HOSE AND OUTLET OF HOSE THE flISER BARREL IN ACCORDANCE WITH ROADWAY VARIABLE STANDARD DRAWING 878.02 FOR OUTLET W/0 DITCH. TYPICAL SECTION VIEW NOT TO SCALE SEDIMENT CONTROL - STONE 1 FT MIN 1/4 WIRE MESH SEDIMENT CONTROL STONE —I FT MIN WATER FLOW RT . 7 GT r1FPTN 1/4 WIRE MESH 2 r 0 000� BARNHILL CONTRACTING COMPANY 2311 NORTH MAIN STREET, P.O. BOX 1529 TARBORO, NORTH CAROLINA 27886 S s _ ._ A.�,., ,,, •� a i1 PEYTONSO RIDGE DR �O O� P� Q SITE 0 � V El Z HUBERT BLVD 11 "'. .... . .. ... ...... .. . .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .''I ­­'. NC HIGHWAY 24 °- SO�1��C S&W CONCRETE �O TO 3PCK G 9pR O VICINITY MAP NTS CATEGORY AFFECTED ACREAGE Tailings/Sediment Ponds 0.12 Stockpiles 3.64 Wastepiles 0.00 Haul Roads 2.90 Mine Excavation 15.00 Other (Explain) Unexcavated Buffers 0.96 Total Disturbed Acreage 22.62 1. Barnhill Contracting Company may relocate on -site haul road and topsoil stockpile as necessary to fit site conditions. 2. No buildings, structures, processing areas or lighting is proposed. No blasting will be used in mining operations. The site will be protected by a locked gate and wooded buffers. 3. Wetlands are shown on the northern portion of the permitted area. A 50' undisturbed buffer will remain in place along wetland line. 4. If stockpiles remain in lace for 7 days or more, they will be temporarily seeded and mulched. 5. Check dams will be used as needed to control runoff from haul road. 6. All buffers in existing wooded areas will remain undisturbed, as shown. 7. All buffers in existing agricultural field areas will be uexcavated. 8. Existing woods located within the mining area will be cleared as mining progresses in those areas. 9. Borrow pit dewatering basin was sized according detail located on this sheet. Basin was sized using a 650 gpm pump with a 2 day detention time. AGRICULTURAL FIELD CONNIE TAYLOR SHARON & KIMBERLY HOWARD 30' EASEM L L ROAD SEE INSET "A" LYNN BELL EXISTING HAUL ROAD SHOWN ON SHEET 2 g / h / J/ m/ STOCKPILE AREA N/ / WATERING BASI STOCKPILE AREA BASIN DESIGN DRAINAGE AREA NO. AREA CF/S MIN VOL. I MIN SQ FTI DESIGN SQ FT StockDlle Area 3.64 9.81 13104.00 1 4265.68 1 4368.00 ONSLOW DEVELOPMENT, LLC �N �' FR r WETLAND 2 r r _O p 8 WETLAND r r r r r r r r WETLAND r r r r r r r 00 I v / PUMP LOCATION `� v J / O / �Q j MINING AREA / PHASE / / / / L__ JL ROAD 25� AVAT BUFF'wll NO�y^yOX3 OI'ERTYLI -.► N��87ING D Nu BELINDA & OTTIS HOWARD AGRICULTURAL FIELD L D TOTAL. 94 3 4418 �A1N G�TO ' O Z MINING AREA ONSLOW DEVELOPMENT, LLC Z m PHASE II ZI OPEN AREA ' N T CHAD STRAWSER NO STRUCTURE BUILT TI' ti EKHART KOHKEMPER .iC171 5 0 S APPROXIMATE LOCATION OF STRUCTURE GRADE pC F SZ z APPROXIMATE LOCATIO OF STRUCTURE EKHART KOHEMPER a NO STRUCTURE BUILT ERIC SMITH ONSLOW DEVELOPMENT GROUP iF TOTALVOL 13254 LEGEND SILT FENCE TEMP. ROCK SILT CHECK "A" 0°0°0°0°0°0°0°0°0°0°0°0° 000000000000000000°O°o°o SILT FENCE OUTLET 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 °°°°°°°°°°°° °°°°° 0 0 0 0 0 0 0 00°0°0°0°0°0°D°0°°0°00°D °°°°°°°°°°°° r r r r WETLAND TEMP. SILT DITCH SILT FENCE \ SILT FENCE 36" RCP \ INSET "A" NOTES: USE NO. 5 OR NO, 57 STONE FOR SEDIMENT CONTROL STONE. -;. 3 FT USE HARDWARE CLOTH 24 GAUGE WIRE MESH WITH 1141NCH MESH OPENINGS. I INSTALL 5 FT. SELF FASTENER ANGLE STEEL POST 2 FT. DEEP MINIMUM. ATTACH HARDWARE CLOTH TO POSTS WITH WIRE VARIABLE' 1J4 WIRE MESH STAPLE OR OTHER ACCEPTABLE METHODS. DIMENSION SPACE POST A MAXIMU M OF 3 FT. FOR INSTALLATION BETWEEN SECTIONS OF SILT FENCE, EXTEND SEDIMENT CONTROL 2 FT STONE A MINIMUM OF 12' ON EACH SIDE OF ., SPECIAL SEDIMENT CONTROL FENCE SECTION. BORROW PIT DEWATERING BASIN DETAIL •. - CLASS A STONE GENERAL NOTES: Ft'-TRAT11 DETERMINE BORROW PIT DEWATERING BASIN SIZE USING CEC*E.TLe Coin FIRER eAFFLE V 8.0203 - 0 • T, WHERE V IS VOLUME (FTF), 0 IS PUMP FLOW RATE (GPM) AMC T IS DEWATERING TIME (HR). USE MAXIMUM FLOW RATE OF 1000 GPM AND A MINIMUM DEWATERING TIME OF 2 HOURS. STONE ENERGY MISER SHALL SEA NON -PERFORATED, SMOOTH OR CORRUGATED 'FE`F°^ DISSIPATOR MATERIAL WITH A FLASH80ARD OPTION. CONSTRUCT THE COIR FIBER BAFFLE IN ACCORDANCE WITH ROADWAY STANDARD DRAWING 1640.01 AND WITH MATERIAL THAT MEETS THE SPECIFICATIONS OF ROADWAY STANDARD 1060.14. PROVIDE 5' STEEL POSTS OF THE SELF -FASTENER W ANGLE STEEL TYPE. INSTALL STEEL POSTS" WITH NO MORE THAN 3' OF THE POST APPEARING ABOVE THE GROUND. ATTACH THE COIR FIBER MAT TO THE STEEL N L P05T9 WITH WIRE OR OTHER ACCEPTABLE MEANS AND 6TAPLED INTO THE BOTTOM AND SIDE SLOPES OF THE BASIN WITH 12" STAPLES. INSTALL TYPE 2 GEOTE%TILE ON SIDESLOPES AND BOTTOM OF BASIN AT INLET AS SHOWN IN THE DETAIL. USE THE TYPICAL SECTION SHOWN FOR THE BORROW PIT DEWATERING BASIN AS A GUIDE. THE EARTH DIKE BASIN MAY HAVE ANY TYPE CONFIGURATION AS LONG AS SUFFICIENT VOLUME IS PROVIDED AND PROVISIONS PLAN ARE MADE FOR A NON -PERFORATED RISER. RISER DO NOT EXCEED 3% FT. IN HEIGHT FOR THE EARTH DIKES REQUIRED FOR BORROW PIT DEWATERING BASIN. THE BORROW PIT DEWATERING BASIN SIZE IS VARIABLE AND DEPENDENT ON SPECIFIC SITE REQUIREMENTS AS WELL AS PROPOSED CONSTRUCTION OPERATIONS. 1, 0„f 6 Rom— 1'.0"3 SUBMIT THE SIZE, LOCATION AND RISER PIPE II MATERIAL FOR APPROVAL PRIOR TO CONSTRUCTION. PUMP THE EFFLUENT INTO THE BORROW PIT DEWATERING BASIN TO A MAXIMUM DEPTH OF 6 IN. GELOW TOP OF UNCLASSIFIED LA EARTH DIKE. EARTH MATERIAL COLIAgEEP PROVIDE A STONE ENERGY DISSIPATOR PAD AT THE i° COIR FIBER BAFFLE STEEL POSTS OUTLET OF THE PUMP DISCHARGE HOSE AND OUTLET OF THE RISER BARREL IN ACCORDANCE WITH ROADWAY VARIABLE STANDARD DRAWING 876.02 FOR OUTLET W/O DITCH. TYPICAL SECTION VIEW NOT TO SCALE 1/4 MARE MESH SEDIMENT CONTROL STONE _ 1 FT MIN WATER FLOW - ^� 1/4 WIRE MESH - 2 FT - SEDIMENTCONTROL STONE 1 FT MIN o°o°o. a ....., .... IRM BARNHILL CONTRACTING COMPANY 2311 NORTH MAIN STREET, P.O. BOX 1529 TARBORO, NORTH CAROLINA 27886 STORMWATER POLLUTION AND PREVENTION PLAN HOWARD PIT BELL FRAZIER ROAD SWANSBORO, ONSLOW COUNTY, NORTH CAROLINA PERMITTEE: Mr. Richard Taylor Bogue Sound Septic and Grading, Inc 325 Barrington Ridge Drive Newport, NC 28570 Permit Number: NC G020537 Prepared by: Susan Sayger, PE KSMJ ENGINEERING, pllc 5514 Highway 70, Morehead City, NC 388 McCotter Blvd, Havelock, NC 252-444-5765 prunlllnlarppf A ES SEAL = AN H. 'r�frrrrflllll lllll��y"`' Page 1 of 6 STORMWATER POLLUTION PREVENTION PLAN TABLE OF CONTENTS A. Introduction B. Physical Facility Description and Location C. Watershed D. Storage E. Potential Pollution Sources F. Recent Spills and Leafs G. Stormwater Outfall Certification H. Site Plan I. Erosion Control Plan J. Stormwater Management Plan K. Responsible Party and Employee Training APPENDIX Google earth image USGS Topo Map Stream Classification Index Copy of Permit Pictures Inspection Site Plan and Existing Conditions Map Stormwater Drainage Map Erosion and Sediment Control Map Page 2 of 6 STORMWATER POLLUTION PREVENTION PLAN A. INTRODUCTION This Stormwater Pollution Prevention Plan (SPPP) is for the Howard pit, located on Bell Frazier Avenue off Highway 24, Onlsow County, North Carolina, Permit No. NCG020537. The owner is Mr. Ricky Taylor of Bogue Sound Septic and Grading. Mr. Taylor received a Notice of Violation (NOV- 2013-PC-0157) in July 2013. This SPPP is provided to satisfy Item I of that NOV. Per approval by the Division of Energy, Mineral & Land Resources, Department of Environment and Natural Resources, the SPPP will be kept at the site or at the offices of the Permittee for review by DENR personnel. B. SITE PLAN AND PHYSICAL FACILITY DESCRIPTION AND LOCATION As seen on the attached Site and Existing Condition Plan, (SP-1) the Howard Pit (Pit) is located off the north side of Highway 24, with access from Bell Frazier Avenue (N 34 43'30", W 77 12'08"). The Howard Pit is located on an 18.1 acre parcel of land and includes two active mining areas and an existing pond. The parcel includes multiple buffered areas. There is a 30 foot buffer which is unexcavated around the existing pond and all stormwater run off is overland flow across site, towards the existing pond and mining areas. The existing pond has approximately 10 (minimum) feet of freeboard. No stormwater leaves the site. However, one of the active mining areas has two permitted outfall discharge locations. Outfall location 1 (see SDM -1) discharges to a rock check dam to ensure velocities are non erosive, in keeping with NPDES permitted discharge point. Outfall location 2 (See SDM-1) discharges via 8" outfall pipe and valve to Meadows Pond, per agreement. C. WATERSHED As seen on the USGS Topo Map, Appendix 1, the receiving waterbody is Pasture Branch, Queen Creek, within the White Oak River Basin. This is a SA;HQW stream classification, Index Number 19-14-16. As seen on attached Stormwater Drainage Map,(SDM-1) all stormwater run off is overland flow across site, towards the existing pond and active mining areas. The existing pond has approximately 10 feet of freeboard. One active mining area has two outfall discharge locations. Outfall location 1 (see SDM -1) discharges to a rock check dam to ensure velocities are non erosive, in keeping with NPDES permitted discharge point. Outfall location 2 (See SDM-1) discharges via 8" outfall pipe and valve to Meadows Pond, per agreement. Page 3 of 6 D. STORAGE This is an active mining site. Mining of sand for fill is performed with typical excavating equipment. Mined materials are staged into stockpiles. As seen in the Site and ExistinIz Condition Plan (SP-1), the stock piles are adjacent to the mines, but outside the buffers. From the stockpiles, the mined sand is loaded directly into haul trucks. There are no permanent facilities located within the parcel. There is minimal onsite storage of equipment at the site. As such, there is minimal to no storage on site, other than the stockpiled mined materials. All equipment is maintained at off site locations. E. POTENTIAL POLLUTION SOURCES The main source of potential pollution is erosion and dust. The access road is nearly 1900 feet long. It is a well compacted surface. The combination of compaction and distance preclude creation of significant dust from haul trucks. In addition, the in - situ soils of the site are sandy in nature and typically create minimal dusting conditions. As discussed below, the site activities are very mature in nature. The processes are repeated and there is little to no grading or excavating outside the typical mining activities. The existing activity pattern is set and little to no new erosion is created. However, as discussed below there is some silt fence in place to ensure any eroded material created is precluded from the leaving the site. F. RECENT SPILLS AND LEAKS No spills or leaks, other than those of a very minor nature from equipment, have occurred over the last three years. As such, no corrective actions have been required or performed. G. STORMWATER OUTFALL CERTIFICATION There are no permanent or temporary utilities with the parcel. With this report, the permitee has certified that the outfall has been evaluated by a professional engineer and there is no evidence of non stormwater discharges from the existing pond or the active mining areas. H. SITE PLAN See Section B above. Page 4 of 6 I. EROSION AND SEDIMENT CONTROL PLAN As seen on the attached Erosion and Sediment Control Plan, (ES-1) access to the pit is along Bell Frazier Avenue from Highway 24. The primary source of erosion would be along the mined area perimeters and along the access road. As discussed in Section E above, the access road is well packed and is very stable in its existing condition. This, in addition to the minimal amount of vehicle traffic, primarily haul trucks, and the length of the access road combine to limit erosion of the site. For additional protection, silt fence was placed along the perimeter in areas where there was a possibility of erosion from mining activities to adjacent parcel. J. STORMWATER MANAGEMENT PLAN As noted above, the site drains overland into the existing pond and mining areas. There are currently no discrete or structural controls, such as inlets or culverts, for runoff into the pond. As discussed in Section C above and seen by the existing spot elevations on the Stormwater Drainage Map (SDM-1), all stormwater runoff drains overland flows within the site and the existing pond. Within the existing pond, there is currently approximate 10 feet of remaining freeboard. This is a significant volume for rainfall events. Within the active mining area there is currently approximate 20 feet of remaining freeboard. This is also a significant volume for rainfall events. Within the existing active mining areas, any discharges are from the two outfall discharge locations. Outfall locations 1 and 2 (See SDM-1). For this report, an inspection of the outfalls was made by a professional engineer (There are no discrete BMPs to inspect). There is no evidence of any nature of erosive outfall velocities, pollutant spills or sediment at the downstream locations, see attached photos. A copy of the record of this inspection is attached. This inspection record is on permanent file with engineer of record, KSMJ Engineering, pile, 388 McCotter Blvd, Havelock, NC 28532, 252-444-5786. Regarding the requirement for rainfall monitoring, a rainfall gauge is in place on site. The gauge is checked by the permittee following rainfall events greater than 0.5 inches. K. RESPONSIBLE PARTY AND EMPLOYEE TRAINING The responsible party for the overall coordination, development and implementation of this plan is the permittee, Mr. Ricky Taylor. However, questions of a technical nature can be addressed through the engineer of record, Susan Sayger, PE of KSMJ Engineering, pile. Page 5 of 6 APPENDIX Inspection Report Facility : Outfall structures, Howard Pit Date: January 6, 2014 Conditions: Cold, clear Outfall Location 1 Free flowing Riprap in place No evidence of undermining No evidence of tampering No evidence of overtopping No evidence of sediment No evidence of recent spills Outfall Location 2 Valve in place and shut No evidence of undermining No evidence of tampering No evidence of overtopping No evidence of sediment No evidence of recent spills Page 6 of 6 NCG 020000 Permit SWPPP Requirements, January 24, 2014 Da n, I have reviewed the SWPPP submitted for the Howard Pit, Permit Number NCG020537, Mining Permit Number 67-58 and have the following comments: The SWPPP is missing: 1. Stormwater Management Plan a. Management of Stormwater Runoff for the discharge into the wetland when the pump is directed to the wetland on the south side of the northern pit. An NOV was issued because the pump malfunctioned and a lot of sediment was discharged to the wetland. A plan should be in place to prevent that from happening again. b. BMP Controls Inspections and Maintenance. i. Once every seven calendar days and within 24 hours after any storm event that results in a discharge. c. Secondary Containment Requirements and Records 2. Spill Prevention and Response Plan 3. Preventative Maintenance and Good Housekeeping Program 4. Employee Training. I based this on the SWPPP requirements listed in the permit. Please let me know if you need any additional information and what you would like me to do with the SWPPP submittal. I would recommend that I contact the consultant that submitted the SWPPP and discuss the omissions. Please let me know. Karl • / I , 0..f �5 �i Sc JSS E] w" 5 5 : c.— c.J 0o NJ U I KCpr'A 0— 1�f