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HomeMy WebLinkAbout20230912_Mine_Maps ANN& C, 13 W I L S 0 N C 0 U N T Y 2'2'2' Proposed Construction Entrance/Exit 1 f f -yYy �r , RIB Lancaster&Sons Properties, LLC '! G I � + � ;° �]' ,r r: � 4031 NC Hwy 222E Stantonsburg, NC 2883 � � y l-J �j � _ � ,, •�' �• Phyllis Shingleton _ �� �� C � �,•. �, a 7 Willliam Shingleton - - �- Patrick Mathews + r P.O. Box 3090 0 26 Barletta Ct., - C / 9 + r Watery Euireka, NC 27830 � ♦ , _- ''� a f Clayton, NC 27527 ♦♦ \ �• ,' it+ $ f -' Brnch f �,� '3 ----, ..-.•-- �.. i \ Lek .., ♦ 4 �r ,•' �; � - 1 1 M % ` JJ Peacock,Jr. [9 8 Na ' Pond �a % WF Peacock + Davis Mill Road CM0._ �IDl n� '` x %� 8109 Netherlands Dr., ✓ ..a �- Phyllis Shin letoin �i ' ` ��� O Raleigh, NC 27606 4remont [ William Shin letoin &t' Ag Propert nc. �� � - ♦� / f ` __-"' °�' -+ .��� � .-"'�•, L! �w p. P.O. Box 3090 't P.O. Box 10Q�D9 • __ � _ i ;`/ / L \` ``. f �` t __ .. L J Eureka,NC 27830 Idsboro, NC 7532 I n +. �\ / ' Wilson Co.-- f M Wilson Co. .._ .. j„-.c.......-- s.r--------- ---------------------------------------- - - • _"_�_ mil �� ------ ►----------------�- ---•- --+.�----- i Wayne Co. ---- .- .................................. -- ...._..------•----------- s+ I Wayne Co. __- `� --J ��' 1 /" �� -ram — ` \` f �-^ d 01 S. .Wooten Corpor ion Vendor 58899 �+► ' - .O. Box 24 Pond �'� . �? .� e _ ,` son, NC 27 94 i ° 0 t , 10 Benton- _ to _r i ✓ % 2328 SF(0.053 Acres)1Netland--------- O ` Disturbance c3f� Faro -- �9 I Pikeville +w . Sharon Aycock 1004 Sunnybrook Rd. Pond t, Wilson, NC 27893 . • �1 _.•. ;• Pop, 716 • i / 'R m �jl\'\ i/ `a/ a ` d o �� �j \.._.,-__ i! ''tee r i '�+ •� ��,• + i 1 mt. cairmel rice�rroS a J I e` aOaddYs Road � \ .."•• ! yt - Stockpile a�" . .... .. �°%sf�(fi`..e;�.@. `. +• _ i _. O` 'fl7 d Road Scale: - 300 Benjamin Shingleton, II %\ "r *q a i tt d --: N 7013 HWY 58N I B 1 `,°� • ;/ e``� =.., Stantonsburg,NC 27883 i , ` T .- - oc R, / `�., � :a0 ' �• H&S Land, LLC. 3204 Nash St., North, Suite(C � e6�P. + l ' X E'Cl1t'1/I� -- / � �• c;� Q / Wilson, NC 27896 -- CL ?- -- y;:• ° i \ ••�. / „-..°r ` ' e♦ •., 100-Year Flood PWin Limits .�•• �'` /' + _\ Y r- _ Scale: V - 4000, n., RECEIVED • _ ----- I i _ 50 ft Undisturbed Buffer————— '---_—'' .—I I SEp qo Tonya B. Watkins �� �\ ���•_ i "� 998 Old Mill Rd. ! - V NITY A '� ,. ^ LAND QUALITY Stantonsburg,NC 27883 o f � MINING PRpG RAM Land Disturbance(Life of Mine) �x5 t.� ' .' . Project Information Category Current Affected Proposed Change to Total Affecte % L -- � �. Acreage Affected Acreage Acreage MID D The Dunnie Hole Mine is located approximately 1 mile northwest of Stantonsburg, NC in `•. -••-••-••-•• � � Tailings/Sediment Ponds 0 3.2 3.2 / �oQtie f Nowell Family Properties Wayne County. Access to the mine is from NC HWY 222 by Dunnie Hole Road which `\, i /• Q Linda Lane ETAL, 4728 Saint Mary's Church Rd., �. � 255 Moss Way, i Lucama, NC 27851 once was a NCDOT road. The mine is located on a parcel totaling 164.63 acres of land, 1.5 1 .5 - Washington, NC 27889 •,.• Stock Piles 0 fw ', g but also includes Dunnie Hole Road and 3.4 acres of land. Land within the mine permit �— - •� boundary totals 158.6 aclres with 103.2 acres proposed for disturbance over a 25 year life .. Waste Piles Legend � `, ; "'e ` / `` of mine. Approximately 2328 Squ. Ft. ( 0.053 acres) of wetlands will be disturbed by the 4.4 4.4 \' 0 -- — mine activity. J � Processing Area/ Haul Roads 0 5.7 5.7 ——————————- Adjacent Property Lines I %` Property Lines&Permit Limits ' + ��. %%� Erosion control will be by seven (7) basins with 3.5 high soil berms diverting the RB Lancaster&Sons f !� �� Mine Excavation 0 88.4 $$.4 .............. Permit Limits Only f Properties• LLC _ 1 301 NC HWY 222E \ f \ stormwater to the basins.. The surface area of the basins was based on the 10-year ----------------- Limits of Disturbance(25 Years) _ f Q St ntonsburg,NC 27 3 f frequency rain event, although the surface area of the water will exceed the basin area �--� Stream ' ; Total Affected Acreage 0 103.4 103.4 I' 0 due to the relatively flat topography at the site. The basin outlets were designed to pass -- ----------" Wetland Limits /' i f / the 25-year rain event. 100 Year Flood Plain Limits ; Total Permiteed Acreage 0 158.6 158.6 Existing Woodline Upon completion of mining, waste piles, berms and basins will be removed and graded to �- -�, Topographic Lines With Designates Elevation promote gravity drainage. Two lakes will be formed by the mine excavation. All roads except Dunnie Hole Road will be removed. ENGINEERING & ENVIRONMENTAL DATE: 2 C SCIENCE COMPANY 08/11/23 Property Information 3008 Anderson Drive DRAWN: Drawing List Site Address: NC HWY 222 Raleigh, NC 27609 Stantonsburg,NC <919> 781-7798 TPs C-1 General Mine Information PIN: 3646882787 REVISED: C-2 Mine Layout Deed Book/Page: 3402/23 Property Owner: H&S Land LLC C-3 Reclamation Plain 3204 Nash Street N.,Suite C GENERAL MINE INFORMATION SCALE: Wilson,NC 27896 See Drawing D-1 Erosion Control Details Total Parcel Area: 164.64 acres DUNNIE HOLE MINE Sheet No. NC HWY 222 STANTONSBURG, NC C-1 WAYN E COUNTY RB Lancaster & Sons Properties, LLC �� 4031 NC Hwy 222E ,� ti Phyllis Shingleton Stantonsburg, NC 2883 o� William Shingleton P.O. Box 3090 __ Patrick Mathews q- Eureka, NC 27830 - � \ �\ / Y • \ ,. .� 26 Barletta C .OV �a0 _ ,..... / I Q� . Clayton, NC 27527 r------� �� -� "A Pond i. 1 , \ \ / JJ Peacock, Jr. W F Peacock 8109 Netherlands Dr., / Phyllis Shingleton �i► '�� � 1 00.0 �\ / A �_ V y Raleigh, NC 27606 1 William Shingleton 9 'g '!G&'L Ag Propert' s, nc. r \ 1 P.O. Box 3090 1 1 �i► P.O. Box 10 9 \ Eureka, NC 27830 i► Idsboro, NC P7532 / +i► �� '/ Wilson Co. �" •\. /Wilson Co , -- ----------------------------------- ----------------r----. o-------------o-----------r--o-- - ----------- +-----r--o-r-o--r--rrrr-orr--r-rr-orr-.�.rr�r-r---rr-rrr-r--r-r----------r--r------rrr-----r-rrr-rrr��orrr-orr-r----- ................. - Wei, -- Wayne Co. .Limits t � 1 Wayrte Co. � \ N BASIN 7 •� �-% / S. Wooten Corpora ion \ - -- Vendor 58899 �, 1 =-- ` r _ - \\ _ \.; CONSTRUCTION SEQUENCE O. Box 24 Pond •s � � 1. Before mining begins, install the temporary diversion berms/silt fence, and construct 1• ,,., » •�• s the proposed sediment basins. Prior to construction of the basins, install silt fence and son, NC 27 94 R \� �' -`_ - p p •—•• 9 __� stone outlets down-slope of the basins. Install the stone outlets at the outlet pipe locations • — e� • \ � for the proposed basins. Remove silt fence after basins have been constructed and vegetation has been established on berms. Clear only as much land as necessary i •I ., \ to install the erosion control measures. __ _ % \ -— —— ,-, f, ; ° ♦• j \ BAST 6 •� 2. Begin clearing, grubbing, and soil excavation. Extend diversion berms as needed to -.-- R ; ' . "' capture uplsope disturbance.. Stabilize site areas as excavation is completed. Scale. 1 " - i • / `! t j 0 3. Revegetate as per the vegletation schedule. Diversion berms shall be stabilized 200 1 "¢� ♦ �_ ` ; within 7 days of construction. t • Sharon Aycock �+► \ ! i , \ Note: Prior to land disturbance, locate and establish 50 stream and wetlands buffers. 1004 Sunnybrook Rd., Pond ; No disturbance shall occur within the 50' buffers. • �, Wilson, NC 27893 � � z -- \ J f �' ♦ �� ' `` Note: See Sheet D-1 for Basin Details, Outlet Protection, and other BASIN 1 ` �` ' joy \ a ` Erosion Control Detaills. Skimmers shall be Faircloth �► '!� r,.'���'�� % � 11 a manufactured. See Sheet D-1 for skimmer information e \ $ 7a dQ o� \ including , low and installation/maintenance � nc uding size fIrates, a ' t` ��. A a) specifications. ��. �_ .,.• x � BASIN 5 � ��` i � \ i a . BASIN 3150 ••' r StompIle \ .` % BASIN ' Benjamin Shingleton, II •` / %' � �� ., 7013 HWY 58N H&S Land LLC` V2, \\ , Stantonsburg, NC 27883 ��,�•• � 3204 Nash St., North, Suite C / Wilson, NC 27896 10 ►' BASIN 2 0 \ .r""' '�'`-► ' •�,• i .,100-Year Flood Plain Limits •I' + ` / .00 Legend • �' °•1 RECEIVED _ , ----------- Adjacent Property Lines •• --.:� _ _- ' SEP j. 2 2023 w. t �' ''. Berm Property Lines & Permit Limits �� [I __ - _ _ \ l so st b - - \ MINING PROGRAM ®- - -• Permit Limits Only � -•-.__•_•_-etl ________ ' ndi ' ' ur Buffer • \ \ � Tonya B. Watki s �� _--�' •,. •- - Limits of Disturbance (25 'rears) \ ' 998 Old Mill Rd., \ Stream \_ o , •' Stantonsburg, NC 27883 Wetland Limits •• • .- •• • \ ;( 1 � 100 Year Flood Plain Limits —_ •`„_...-•• � _ Existing Woodline ••`•• _._.__� r ` �� " \ Topographic Lines with Designated Elevation \\ �` _ \ '`.'100-Ye r Flood,• ••••,, .• • ®•' • ° �� ' ::, - / `�� g a. Flood Plain': its •■'.. _ . • 'C '� \ , w,......, r \ ,\, ` ♦ DATE: a ENGINEERING & ENVIRONMENTAL Proposed Soil Berm � --_ - `. . ••-••- - �,�e [] SCIENCE COMPANY 08/11/23 �c \ • • •• • 0�� '—'•"•` 1 3008 Anderson Drive • Proposed Temporary Silt Fence \ 1 �._ �oP 1 Nowell Family Properties �. DRAWN: Raleigh, NC 27609 Q Linda Lane ETAL 4728 Saint Mary's Church Rd., (919) 781-7798 TPs �\ \ �. t 255 Moss Way, / Lucama, NC 27851 REVISED: Proposed Sediment Basin Washington, NC 27889 PROPOSED SECONDARY \, / • , A, SPILLWAY Proposed Baffles \ � - � •=� MINE LAYOUT PROPOSED V - \ i--- • •, SCALE: SKIMMER AND .. - - / , r caster & Sons See Drawing PRIMARYOUTLET \. , �...� i ��� / , " r Prape LIC ( DUNNIE HOLE MINE Sheet No. \ •. 4301 NC HWY 22E r •' \' NC HWY 222 Proposed Soil Berm 1 / \ �.,, / \ ' Stantonsburg, IBC 27883 - /I \ \ '•� STANTONSBURG, NC C-2 `•• "® WAYNE COUNTY T CROSS-SECTION A A' (NTS) _ \ ej co __ d .+••_ \r - w 50 Wetland Y a. ,- ;.. \ ' o p o 50' o 2 50' Wetlands oa r f'___— ��' Surface Water 5U.1 A Stream /I \ Mine Excavation 4'Min. / 4'Min. Mine Excavation 1 ' ♦ ! Contenina - - - - - - - -� � — - - -- -- - - - - - -� o Creek Scale: 1 200 ,� i 1 ♦♦ - „`1, _ - 8109 Netherlands Dr., O ��i �► ` / - Wilson Co. '! 1 'Nilson Co. ------ `. e-- ------------��=---- -------------------- - ---- will ----------- f----------------+--------�------ ----a*•---------------------------------------------------------�y Wayne Co. P ' '�I .Lim s < / Wayne,, �► __i_ir e \� ' VEGETATION PLAN 1.. Spread topsoil over disturbed areas and leave surface reasonably smooth � 1 �. - •. '� �• ���-� and uniform. �� '—' - 2.. Scarify surface to prepare a seedbed 4 to 6 inches deep. Use such equipment Pond ��, r-� ,�%•> , h �__---- as tilling,discing,or tracing with the teeth on a front end loader. 3- Mix lime and fertilizer with the soil during seedbed preparation. P r r- �y.�—' r-�" �� _ 4. Seed on freshly prepared seedbed following the application rates for the / L• appropriate season. %i j �,► ; __, i ®•w o 5. Mulch all seeded areas immediately. �! '•' r ice. —%, . / 6. Tack mulch on slopes 3:1 (H:V)or steeper by spraying with emulsified j• \ -J �, �, _, �, •od asphalt. Use an anchoring tool such as a farming disc set in a vertical _ , i '^` '� r �� r � �— •�o ; positing on slopes less than 3:1. Mulch netting may also be used on slopes. - -,_- ---- -- ♦ R � � � � �• � 7.. Inspect seeded areas and make repairs within the planting season. If vegetation is over 60%damaged,repeat steps 2 through 5. .->� r- �. : P • I _ �,. 8_ Permanent revegetation shall be accomplished at the specified times of / ! t ,•—� J` °' `' N the year. Temporary vegetation shall be applied outside of the optimal times '�\ Y A rY g PP P for establishment of permanent vegetation. Pond �. � . ' `. �. � � 1 ,�,., _ ' —� TEMPORARY SEEDING SCHEDULE a ♦ F ' ` \x. '`� Seeding Date: Dec. 1 -Apr. 15 '• �� ®• �C j -' x.` -� r-� �- -h.�.---� �J .- Seed Type Rate Rye(grain) 1201bs/acre Kobe lespedeza 50 lbs/acre -�� 10-10-10 Fertilizer 750 lbs/acre �,�` Lime 2,000 lbs/acre Reclamation Considerations �• �'� , � � � o �w�«, CU Mulch 4,0001bs/acre o r ' / Seeding Date: Apr. 15 - Aug. 15 ° 1. Maintain undisturbed buffer of at least 50ft from wetlands 1 -J Seed Type Rate 1 N w German Millet 40 lbs/acre and natural bodies of water. ' �� i �' �' �"-' �J -� I\'\ ► - '-� �� -J - • 10-10-10 Fertilizer 7501bs/acre !• R e ,� O _. ! 1 �-� -� .-� - �� r"T• Lime 2,000lbs/acre 2. Perimeter mine excavation slopes shall 3:1 (Horizontal to Vertical) or flatter. 1 ,� !i, �'• Q��� �i'�' .� �-� .-'I .-' -� 1 j \ 1\ ` •'�� �- .-� ,r. 0 ♦ • Mulch 4,000lbs/acre 3. Grade mine floor for sheet water flow towards the lakes. �--' (� '—' —`»"'"`�•�' ' Seeding Date: Aug. 5 to Dec. 1 4.Perimeter berms, haul roads, and stock pile areas shall be removed and the Y ��/ ;' Gaye �,• � , � � � . `• g g• �\rg ` ' `• / seed Type Rate round smoothed and sloped to promote gravitydrainage. Dunnie Hole Road will �.• S 5 �, \ _,�` \ `� - �J ♦. / 1 Rye(grain) 1201bs/acre g p p g - '.' �,1.' �� �� �J �� �� �� �� ,- --� �� `. ` .�.` `' sp``� �' �' �' �' ; 10-10-10 Fertilizer 1,0001bs/acre remain in-place. -- s• ",..•• �, �, �, �, �___, i---� , ,_, ,T, ,_, ,,�, �. `.,;.•. '�,` =. �/��.`` ,--� ,—� •�• y.w Lime 2,000lbS/acre 5 Reve etation per the Schedule below. . _ ,,®' - r -� �J .-' �-� �� ♦ �`• \St4r .-J - 1 L_ O Mulch 4,000lbs/acre g • "P ~ \ PERMANENT SEEDING SCHEDULE Seeding Date: Apr. 1 -July 15 Seed Type Rate(lb/ac \. �• �/ i .-� .-� �• .-� r•-'; •-' �' .-' �-'(,_.�� .-' .-' r--' .-� r-' .-� �� � .--J .-' �� �� .-' �� ♦``vrb�. \ �•�.�` � .�`. 1 Pensacola Bahiagrass 50 Sericea lespedeza 30 . 0, ; Centipede grass 5 German millet 10 of \ � C'�• ' .-� .-J .-J .--� ;.---' .-' �-� .---' .-� '• .-]►.•'lr-•-' 40 Q1 dOo'— Soil Amendments: Apply lime and fertilizer according to soil test,or apply O O O O O O r O O O' 10-10 10f re ground agricultural limestone and SOO lb/acre oi- 10-1 1 0-10 fertilizer. w`--\" �. ®:` P• / 100-Year Flood Plain Limits I Mulch: �•`�."`` J �� J �� �� J� J �! J ��. � �� �_, �, _, �� �„.•�� �J �, �, , �, _� �� Apply 4,000 mul h. acre grain straw or equivalent cover another ,�,,•r. suitablee mulch.Anchor by tacking with asphalt,roving,or netting ••••• \ �`* �, � � �, �� �`�.•�� ,-, �� �-� ,-� �-� ',-� ,-� ,-� ,-� �-� ,-�-�vr� .-�' �� .---' .-' .--� �-'''�' r-' �� � ��� or by crimping with a mulch anchoring tool.A disk with blades % ;, `` � ____ �� J �� � /� � � �� �� � � �J � � �� �� �J �� �l ��• �� �� r� ��•�� �, �_, �J 1 set nearly straight can be used as a mulch anchoring tool. •%b -- RECEIVED .-�°•�• Maintenance: Refertilize the following April with SO lb/acre nitrogen.Repeat as ` _ __' -� �, �/ �� �� J J r• J J J J �� �� - ''- - growth requires May be mowed only once a year.Where a neat t` �. �►� appearance is desired,omit sericea and mow as often as needed. LAND QUALITY _ -- MINING PROGRAM U .--. be-d-B--•-•-•-• . -------n_istur _ r �f .-•--'- - � - I) G-round Stabilization* --- Site Area Stabilization Stabilization Time 1)escri Lion f'imc Frame Frame Exceptions ". ••.� I 11c.ruuetcr dikes, �•�TM,• '� •.�• �> swales,ditches 7 days None ..� 1, ��♦ %, and Slopes 1 ♦ • high Quality ___\`\ `• ". ,.• ��` Water(IIQW) 7 days None - ••�`••.... ...r •. �'' ••• /'�1 Zones If slopes are 10' or �� `••� ��5 __. ` • Slopes steeper 7 da s less to length and are \ •'��• \f� / �% ` than 3:1 y not steeper than 2:1, •" •.� - 14 days are allowed. DATE: __ • d 1 ` �-- 100-Year Flood Plain Limits -•e / c® Q •�•„ vm.�„ *� 7-days for slopes ENGINEERING & ENVIRONMENTAL �; '�� a� .` • slopes 3:1 or halter 14 days greater than 50 feet SCIENCE COMPANY 08/11/23 \ �` P, ♦ 3008 � •I'••�••r'••••" w" ` -- ''���`� � � ,,, ♦� Ill length Anderson Drive DRAWN: ('t� ,...•% 1 v Raleigh, NC 27609 9 , \ Oe. 1 ♦ • None 919 781-7798 TPS All other trews (except for with slopes flatter 14 days REVISED: ��. perimeters and Lhan4:l IIQW Zones) \O�•, RECLAMATION PLAN "tistcnsions of time may be approved b the permitting authority y 1 Y P'• b' pY GALE: •m,, - based on weather or other site-specific conditions that make compliance .r .*, / �� , `-,•° tmpracncable."(Section 11.13(2)(b)) �l r S See Drawi ng ��_ ,\ _ __ ___, � (� s �. •� ,. ., DUNNIE HOLE MINE Sheer No. NC HWY 222 I �� ,� O } - •.� STANTONSBURG, NC C 3 WAYNE COUNTY of: SECONDARY SPILLWAY SILT FENCE DETAILS Minimum 12-1f2 Gauge Intermediate Wires SEDIMENT BASIN W/ SKIMMER DETAIL Minimum 10GaugeLine Wires 8'MAXIMUM 3 3 (variable as diremd by the engineer) TOP OF EMBANKMENT See Basin Schedules- 1 1 See Basin Schedule J. _ _, j RISER STRUCTURE ill end Fa i,c , ,1 .„�,e , , Pipe Connections y' h�]i1. n, + .?+ } r• wi fro to Grade TRASH RACK ,� ��y'��'� L �-EMERGENCY SPILLWAY -Ensure that all conduit connections are watertight. Rod and FREEBOARD- ��_I. -, y1f.-N1 ` 19 1'Mlhl_ _ Il UII1[ 11111A4I Ill� llll s. lug e connector bands with gaskets are referred for corrugated�. � g type g P g Laminated Plastic Limn or SKIMMER -► Dt� ` -1l1�ltltlt It )11t111t`+`ltlt9t=1`iJ= e metal pipe to assure watertightness under maximum loading and internal g li. 4l[ 1W �W I1 -1I1( 1 W-1�I ItiC WllNN p p g g Impermeable Geotextile Fabric �' -lilt ltlt 4ll� 9t1i It lllt.�ltlt itll 6!!( YMJillAll pressure. Do not use dimple universal connectors under an E. � i,=1tiI��IIII� I?I��IIII�ICII�'.1�I��I11I�1C11�41f1 �1111:�1t11�'4111'�Il��,� p P ( ) Y h circumstances. OUTLET PROTECTION DETAILS BARREL ' 3 g• A t---PIPE _ Trash guard ``�j -It is important that a suitable trash guard be installed to prevent the riser ��� steel Post �` �►; �1'Y `X °� �'�.�`r F' ` /`N and barrel pipes from becoming clogged. Install a trash guard on the p�P g gg g o.d' �o.0- tWovenlire Fabric CLASS B STONE PAD �►► to of the riser to prevent trash and other debris from clogging the conduit. O o AfTIFLC?ATT ION BLCICK SECTIONAL VIEW CUT-OFF ANTI-SEEP p gg gl �! 1' MIN TRENCH STABILIZEC? A combination anti-vortex device and trash guard improves the efficiency � O o (� <o {� Woven enc Geotextite Fabric COLLAR OUTLET � � � 2 DEEP of the principal spillway and protects against trash intake. o.c�' o.d�o-c�3�.�o.c�' Go � o � o � o � (� 3,_0„ .�, ,6 <6 0� 7 ft. 26„ Protection against piping CMP Outlet Pipe - �-Install at least one watertight antiseep collar with a minimum projection �o C] �1 � 0 e NOTES of 1.5 feet around the barrel of principal spillway conduits, 8 inches or 3 ft. I FOR EROSION CONTROL ON INTERIOR AND EXTERIOR SIDESLOPES. d���� � s"Minimum cover over skirt 1. SEED AND PLACE MATTING � 4"Minimum horizontal turn larger in diameter. Locate the anti-seep collar slightly downstream from o ; o w,- ! 2. INSTALL A MINIMUM OF 3 COIR FIBER BAFFLE'S IN ACCORDANCE WITH PRACTICE STANDARD 6.65. the dam center line. A properly designed drainage diaphragm installed � 11 2-° 3. INSTALL SKIMMER AND COUPLING TO RISER STRUCTURE OR DIRECTLY INTO EMBANKMENT 1 FT. FROM BOTTOM OF BASIN. around the barrel may be used instead of an anti-seep collar when it is o �� 4. THE ARM PIPE SHALL HAVE A MINIMUM LENGTH OF 6 FT. BETWEEN THE SKIMMER AND COUPLING. NOT TO SCALE appropriate. 8 ft. Note:: Silt Fence Specifications Inspect outlet protection structures weekly and after significant (1/2"or greater) 1.Steel posts shall be a minimum of 5 ft.long,weigh a minimum of 1.3 lb/ft,and rainfall events to see if any erosion around oir below the riprap has taken place, have projections to aid in fastening the wire or falbric. Steel posts shall also have a metal plate welded near the bottom such tlhat when the post is driven or if stones have been dislodged. Immediately make all needed repairs to to the proper depth,the plate will be below the ground level for added stability. prevent further damage. 2. Woven Wire Fence shall conform to the requirements of ASTM A 116, Class I zinc coating for wire. The fence shall be at least 32 in.high and shall have at least 6 line(horizontal)wires. Stay(vertical)wires shall be spaced 12 in.apart. The top and bottom wires shall be 110 gage. All other wires shall be 121/2 gage. RISER STRUCTURE Alumina rt� straps 3. Filter Fabric shall be composed of fibers consisting of long chain synthetic SKIM MER (SIZE VAR.) Skimmer shown in „ `��nt polymers composed of at least 85%by weight off polyolefins,polyesters,or STEEL POSTS(QUANTITY VAR.) suspending polyamides. The fibers shall be formed into a network such that the filaments floating position with Orange tip EMBANKMENT horizontal intake or yams retain dimensional stability relative to each other. The filter fabric shall be free of any treatment or coating which might,adversely alter its physical PLASTIC SLOPE DRAIN PIPE i / STONE ENERGY 4., pvc float ., SCh 40 properties after installation. The fabric shall be'free of defects or flaws which (PRACTICE STANDARD6.32) ry h DISSIPATOR significantly affect its physical and/or filtering properties. The fabric shall have t Coupling a minimum width of 36 inches. �-� GEOTEXTILE LINI OR NG C onnection ( 33" The filter fabric shall be furnished with suitable wrapping for protection against moisture and extended ultraviolet prior to placement. -�-�---1 ------- 3" Sch 40 SOLID pvc barrel _�`tip �_ - __ _ 14�- 0 --------• ao / f ;k �� 1 . J M1 The filter fabric shall meet the following minimum physical requirements: "�9 4 or arm PROPERTY* TEST METHOD REQUIRED VALUE 1 - n SUPPLIED BY USER 3 Tensile Strength ASTM D 4632 400 Newtons(901b) TEMPORARY OR PERMANENT DITCH � ;,,, � 1 y Elongation ASTM D 4632 <50%-fabric self supporting ROPE _>50%-fabric requires woven EMERGENCY SPILLWAY x 88 wire backin.2 4" Orifice/ Apparent Opening Size(AOS)** ASTM D 4751 0.84 millimeter(U.S.Sieve#20) COIR FIBER BAFFLES Permitivity ASTM D4491 0.01 Sec' (PRACTICE STANDARD 6.65} STONE PAD o '`£ F - '- Vniet Ultraviolet Stability(retained ASTM D 4255 70% ` a � strength after 500hrs of PLAN VIEW {below skimmer} A f WOOD STAKE ti• �-"'"- � ultraviolet exposure) Patent R: 5,820,751 OR METAL POST 4. A 6 in.x 6 in.trench shall be dug on the upstream side of the silt fence. The silt fence shall line the trench and extend up the posts for the remainder of the fabric width. The trench shall then be ba(ckfilled and tamped. Silt fence Note: Baffles are to be equally spaced. fabrics shall be spliced together only at supporting posts with a minimum of 3" hose, ss Clamps 6 in.of overlap and in such a manner to prevent silt from passing between 3' threaded male nipple 4' Inlet 4" HEAD [distance frol 1 the two ends. At the time of installation,the fabric will be rejected if it has any On outlet end CelTfeJ'? E3 {7/7flCe,'t/)t�t�FO defects,deterioration,or other damage incurred during manufacture, extension transportation,or storage. Basin Maintenance `vareP��"'��'�e Silt Fence Maintenance Considerations Inspect skimmer sediment basins at least weekly and after each significant(one half inch or greater)rainfall event and repair immediately. Remove sediment and restore the basin (' Coupling can be removed and hose attached to outlet using the threaded nipple. 1. Inspect silt fences at least once a week and after each rainfall. Make any required repairs immediately. to its original dimensions when sediment accumulates to one-half the height of the first 2. Should the fabric of a sediment fence collapse,tear,decompose or become ineffective,replace it promptly. baffle.Pull the skimmer to one side so that the sediment underneath it can be excavated. Attach directly to metal riser ensuring a water tight connection. 3. Remove the sediment deposits as necessary to provide adequate storage volume for the next rain and to Excavate the sediment from the entire basin,not just around the skimmer or the first cell. reduce pressure on the fence. Take care to avoid undermining the fence during c eanout. Make sure vegetation growing in the bottom of the basin does not hold down the 4. Remove all fencing materials and unstable sediment deposits and bring the area to grade and stabilize it skimmer. Note: SCH 40 solid PVC barrel/arm should be between 6 and 10 in length. after the contributing drainage area has been properly stiibilized. Repair the baffles if they are damaged.Re-anchor the baffles if water is flowing Note: Design Flow Rate for 2" Skimmer: 0.038 cfs underneath or around them. Note: Design Flow Rate for 2.5" Skimmer: 0.072 cfs If the skimmer is clogged with trash and there is water in the basin,usually jerking on the Note: Design Flow Rate For 3" Skimmer: 0.11 cfs rope will make the skimmer bob up and down and dislodge the debris and restore flow.If this does not work,pull the skimmer over to the side of the basin and remove the debris. Note: Design Flow Rate For 4" Skimmer: 0.23 cfs RECEIVED Also check the orifice inside the skimmer to see if it is clogged;if so remove the debris. Note: Flow rates are from Faircloth product cut sheets. SI"P 12 2023 SOIL BERM CROSS-SECTION If the skimmer arm or barrel pipe is clogged,the orifice can be removed and the obstruction cleared with a plumber's snake o)r by flushing with water.Be sure and replace the orifice before repositioning the skimmer.. LAND QUALITY MINING PROGRAM 3' Check the fabric lined spillway for damage and make any re quired repairs with fabric that CONSTRUCTION ENTRANCE/EXIT spans the full width of the spillway. Check the embank ment,spillways,and outlet for erosion damage,and inspect the embankment for piping and settlement.Make all 2 2 3.5' necessary repairs immediately.Remove all trash and other debris from the skimmer and 1 1 pool areas. Ioo;o, Collection Berm Specifications 'SIN 1. Construct berm by placement of overburden. Proposed Sediment Basin Calculations Design Elevations ft. EL 2. Prior to placement of materials for berm formation,cut vegetation Pa�ti nearly flush with ground(if applicable). Surface Area at normal pool, Skimmer Width of Inlet Outlet Crest of Watershed Weighted Inflow square ft. Storage Volume, Cubic Ft. Inlet & Draw Down Barrel Dia., Heightt of {3) Secondary Invert of Invert of Top of Secondary Top of 2-yr 24-hr 10-yr 24-hr 25-yr 24-hr / 3. Compact materials in lft. lifts by construction traffic. g Riser Dia., Horizontal Horizontal Riser Se ary Berm Storm Elev. Storm Elev. Storm Elev. Basin Area Average Tc, (�{1} cfs {2) Area (2) Orifice, Time, hours inches inches Berlin, ft. Spillway, w (acres) CN minutes 1 o Required Provided Dist., acre Required Provided inches ft. Pie Pipe Spillway � �� � 1 18.8 86 73.1 34.58 15,042 15,138 18.8 33,840 195,204 3 85.5 181112" 33 10 99.0 98.5 102.0 102.5 103.5 101.6 102.2 102.4 1 P e 8,712 ^ ENGINEERING & ENVIRONMENTAL DATE: 2 10.8 86 ll2.1 14.40 6,264 10.8 19,440 295,010 3 49.1 18" 12" 3.5> 10 99.0 98.5 102.0 102.5 103.5 101.0 101.3 101.6 1 SCIENCE COMPANY 08/11/23 132'x66' 24 200 1 8" 12" 3.5; 102.0 103.5 101.8 102.2 102.5 Notes: DRAWN: 3 28.6 8C $6.$ 46.23 20,110 � 28.6 51,480 257,997 4 62.2 10 99.0 98.5 102.5 3008 Anderson Drive (220'xl10') 1. Clear the entrance/exit area of all vegetation,roots and other objectionable material. Raleigh, NC 27609 14,792 18" 12" 3.5 10 99.0 98.5 102.0 102.5 103.5 101.4 102.0 102.1 (919) 781-7798 TPS 4 9.0 86 25.6 33.94 14,764 9.0 16,200 129,016 2•5 62.5 2. Place 2-3' coarse aggregate. (172'x86') 12,800 13,320 74,752 2 5 51.4 18" 12" 3.5 10 99.0 98.5 102.0 102.5 103.5 101.6 102.1 102.2 3. Maintenance Considerations:Maintain the gravel pad in a condition to prevent REVISED: 5 7.4 86 25.2 28.18 12,258 (160'x8o') 7.4 mud or sediment from leaving the construction site. This may require periodic 6 6.1 86 28.3 21.64 9,413 9,800 C 1 10,980 134 600 2 80.3 18" 12" 3.5i 10 99.0 98.5 102.0 102.5 103.5 101.1 101.5 101.8 topdressing with 2-inch stone. After each rainfall,inspect any structure used to (140'x70') ' trap sediment and clean it out as necessary. Immediately remove all objectionable EROSION CONTROL DETAILS SCALE: 19,897 25,000 22,500 99,407 3 56.8 18" 12" 3.5i 10 99.0 98.5 102.0 102.5 103.5 101.9 102.3 102.5 materials spilled,washed,or tracked onto public roadways. NTS 7 12.5 86 26.9 45.74 12.5 250'x100') ( 4. See Sheet 1 For locations l�' SEAL (1) Required Surface Area is based on 435 sf per cfs of Q10 peak inflow ,�6 ( DUNNIE HOLE MINE stattrl�. (2) Required Volume is based on 1800 cf/ac. of disturbed area NC HWY 222 3 From normal pool to to of berm STANTONSBURG, NC D-1 O P p WAYNE COUNTY