Loading...
HomeMy WebLinkAboutNCC217023_Site Plan or Location Map_20211220Property Owner Grove Stone and Sand Company PO Box 425 Swannanoa, NC 28778 Contact Person Jason Conner Grove Stone and Sand Company PO Box 425 Swannanoa, NC 28778 Phone: 828-712-9009 Proiect Location SCM Pre -cast 250 Old Hendersonville Road Hendersonville, NC Engineer Jason Conner (828-712-9009) Hank Gaston (704-853-9664) Hedrick Industries PO Box 425 Swannanoa, NC 28778 Erosion Control Plan S C 1\4 - Precast Site Henderson County., NC irF,rl 1 - 5 r � . ipi r Brid$e q . • • ProJ e ct Site 0 Vicinity Map PIN: 9652419348 Soils: Evard Soils River Basin: French Broad River Drainage: Mud Creek Current NPDES Permit: NCG070166 Not to Scale Schedule of Drawings G-001 ..... Cover Sheet G-002 ..... General Notes G-003 ..... Existing Site Conditions G-004 ..... Erosion Control Plan G-005 ..... Soil Map G-006 ..... Seeding Map G-007 ..... Miscellaneous Details G-008 ..... Miscellaneous Details G-009 ..... NCGO 10000 Requirements General Construction Notes Revision Date - October 19, 2021 1. Finish grade tolerances shall be as noted in the specifications. The engineer may make grade changes as required in the field without effecting unit bid price for unclassified excavation. 2. Unless otherwise stated, all fill areas shall be constructed in layers of 8" maximum thickness, with water added or soil conditioned to the optimum moisture content as determined by the engineer and compacted with a sheep's foot roller to a compaction equal to or greater than 95% (100% in the top 2' of the sub grade below roadways and parking lots) of the density obtained by compacting a sample of the material in accordance with the standard proctor method of moisture -density relationship test, ASTM D698 or aashto-99 unless specified in other specifications. 3. Entire area to be graded shall be cleared and grubbed. No fill shall be placed on any area not cleared and grubbed. 4. All soil erosion control measures required by the grading plan shall be performed prior to grading, clearing or grubbing. All erosion control devices such as silt fences, etc.., shall be maintained in workable condition for the life of the project and shall be removed at the completion of the project only on the engineer's approval. payment shall be considered incidental to clearing and grubbing. if during the life of the project, a storm causes soil erosion which changes finish grades or creates "gullies" and "washed areas". These shall be repaired at no extra cost, and all silt washed off of the project site onto adjacent property shall be removed as directed by the engineer at no extra cost. the contractor shall adhere to any approved erosion control plans whether indicated in the construction plans or under separate cover. 5. Disposable material A. Clearing and grubbing wastes shall be removed from the site and properly disposed of by the contractor at this expense, unless specified otherwise. B. Solid wastes to be removed, such as sidewalks, curbs, payment, etc.., may be placed in specific disposal areas delineated on the plans or removed from the site as required by the specifications. This material shall have a minimum cover of 2. The contractor shall maintain specified compaction requirements in these areas. When disposal sites are not provided, the contractor shall remove this waste from the site and properly dispose of it at his expense. C. Abandoned utilities such as culverts, water pipe, hydrants, castings, pipe appurtenances, utility poles, etc.., shall be the property of the specific utility agency, or company having jurisdiction, before the contractor can remove, destroy, salvage, reuse, sell or store for his own use any abandoned utility, he must present to the owner written permission from the utility involved. D. On site burning is an acceptable method of disposing of flammable wastes when burning is anticipated, the contractor shall be responsible for obtaining all necessary permits and meeting governing codes. The contractor shall notify the engineer or his representative as to the specific location of burning. 6. In the event excessive groundwater or springs are encountered within the limits of construction, the contractor shall install necessary under drains and stone as directed by the engineer. All work shall be paid based upon unit bids, unless specified otherwise. 7. The contractor is responsible for the coordination of adjustment of all utility surface accesses whether he performs the work or a utility company performs the work. 8. The contractor shall control all "dust" by periodic watering and shall provide access at tall times for property owners within the project area and for emergency vehicles. All open ditches and hazardous areas shall be clearly marked in accordance with the specifications. 9. All areas where there is exposed dirt shall be seeded, fertilized, and mulched according to the specifications. The finished surface shall be to grade and smooth, free of all rocks larger than 3", equipment tracks, dirt clods, bumps, ridges and gouges prior to seeding. The surface shall be loosened to a depth of 4"-6" to accept seed. The contractor shall not proceed with seeding operations without first obtaining the engineer's approval of the graded surface. All seeding shall be performed by a mechanical "hydro -seeder." Hand seeding shall be authorized on an area -by -area approval by the engineer. Disturbed areas should then be matted with short-term photodegradable erosion control matting. 10. Where specified, all storm drain pipe shall be high density polyethylene (HDPE). Smooth wall interior, with watertight joints, backfilled with #57 washed stone up to min. 6" over the top of the pipe. HDPE pipe used for storm drainage detention systems shall be ADS N12 WT or approved equal. I I. Contractor shall verify all elevations before installation of facilities. 12. Catch basins cast -in -place shall conform to the requirements of NCDOT standard specifications for roads and structures (latest edition) articles 840-1 through 840-3. Curb inlet catch basin shall conform to NCDOT standard details 840.02 through 840.04 drop inlets shall conform to standard detail 840,14. Junction boxes shall conform to standard detail 840.31. 13. Curb inlet frame, grate and hood shall be NEENAH R-3233D. Products by Dewey Bros., US Foundry or equal drop inlet frame and grate shall be NEENAH R-3339A or equal. Field inlet cover shall conform to NCDOT standard detail 840.04, opening facing upstream. 14. Concrete and masonry shall meet the requirements of appropriate section of NCDOT standard specifications for road and structures (latest edition). Concrete shall be class A or B, 4000 PSI minimum, meeting the requirements of section 1000, constructed in accordance with section 825. Masonry shall meet the requirements of section 1040, constructed in accordance with section 830 and / or 834. 15. Tops of proposed frames and grates shall be flush with finished grade. 16. Precast concrete boxes are acceptable alternatives for proposed catch basins Maintenance Plan Revision Date - October 19, 2021 1. All erosion and sediment control practices shall be checked for stability and operation following every runoff -producing rainfall but in no case not less than once every week. Any needed repairs shall be made immediately to maintain all practices as designed. 2. Sediment shall be removed from the permanent sediment basins when sediment accumulates to one-half the height of the first baffle. Clean out and reshape basin back to its' original dimensions. Repair any damaged baffles. Skimmers shall be checked for clogging and cleaned out. 3. Sediment shall be removed from behind the silt fence when it reaches 0.5 feet deep at the silt fence. The silt fence shall be repaired as necessary to maintain a barrier. 4. Maintain all matting that has been placed on slopes and in ditches. Check for good ground contact and for the occurrence of any erosion under the matting. Monitor and repair or replace as necessary. 5. The Contractor shall maintain Self Inspection Reports as required by NCDENR and the NPDES Construction Stormwater Permit. Self -Inspections are to be conducted after each phase of the project for the record of the installation and maintenance of the erosion control measures. For documentation of Self -inspection reports and NPDES Self -Monitoring Reports, DWQ and DEMLR developed a combined form. The Self -Inspection program is separate from the weekly self -monitoring program of the NPDES Stormwater Permit for Construction Activities. The focus of the self -inspection report is the installation and maintenance of erosion and sedimentation control measures according to the approved plan. The inspections should be conducted after each phase of the project and continued until permanent ground cover is established. The form can be accessed at: http://portal.ncdenr.org/web/Ir/erosion Construction Seauence 1. Obtain the necessary erosion control permit from the Henderson County Planning Department. If the County does not have a local program the permit will need to obtain from NCDENR, Land Quality Section 2. Add Erosion Control discharge points to existing NPDES permit NCG070166 for this site. If needed acquire NCGO10000 permit. 3. Have all property boundaries surveyed by a licensed survey prior to construction activities. Licensed surveyor will flag boundary and any ROW's every 50' with flagging. 4. Flag and stake construction limits prior to any land disturbing construction activity. 5. Notify NCDEQ LQS inspector when project begins 6. The Contractor shall be responsible for keeping all records required by NCDENR for the installation and maintenance of the site erosion control. 7. No significant land disturbing activities including basin construction can take place during wet weather or periods of predicted wet weather. 8. Install silt fence as shown on plans, clearing only what is necessary to install the silt fence. 9. Clear and Grub site for the construction of basins #1, #2, #3, and #4 10. Construct sediment basins #1, #2, #3, and #4 prior to construction on Pads 1 and 2. 11. Prior to construction of Pad 1 ditches 4, 5, 6, 7, and 8 must be constructed to allow flow from any disturbance into basins. 12. Clear and Grub site for the construction of Pad 1. 13. Construct Pad 1 to the dimensions and all erosion control measures as shown on maps. Once Pad 1 is complete seed and apply RCP to slopes of Pad 1 prior to construction of Pad 2 14. Install slope drains and temporary divisions ditches as shown for Pad 1. All slope drains shall extend from the top to bottom of basin 15. Install ditches 1, 2, and 3. 16. Construct Pad 2 to the dimensions and all erosion control measures as shown on maps. 17. After completion of Pad 2 seed and install RCP as shown on the map and detail sheets. 18. Install slope drains and temporary divisions ditches as shown for Pad 2. All slope drains shall extend from the top to bottom of basin 19. Erosion control measures shall be maintained during the entire length of the project. No measure shall be removed without prior approval. 20. Notify NCDEQ LQS inspector when project is completed. North Carolina Land Quality Section Erosion Control Notes Revision Date - October 19, 2021 General: All erosion control measures are to be performed in strict accordance with requirements of the North Carolina Department of Environment and Natural Resources, Division of Land Resources, Land Quality Section. The following construction sequence shall be complied with for all work. 1. Prior to beginning work on the project, the contractor shall obtain form the owner a copy of the "erosion and sediment control approval" from the North Carolina Department of Environment and Natural resources, Division of Land Quality, or the local authorized program. The approval notice must be available on -site during all grading and construction activities. 2. Install all erosion control measures as required by the North Carolina Department of Environment and Natural Resources, Division of Land Resources, Land Quality Section. Note: All utility installation with 25' of a river or stream bank shall be installed per stream protection during excavation. Detail seeding and mulching shall be completed daily in areas noted as stream protection areas. Silt fence in these areas shall not be installed closer than 5' from creek bank unless field conditions prevent sufficient clearance. All silt fences shall be inspected and cleaned as needed after each rain. 3. No work shall be performed in stream from October 15 to April 15 (to accommodate COE and DWQ recommendations concerning work in trout waters). 4. Contractor is to place permanent stakes marking clearly the 25' buffer for streams were shown on the plans and the markers are to be visible at all times during construction. 5. Obtain certificate of compliance through on -site inspection by a representative of the North Carolina Department of Environment and Natural Resources, Division of Land Resources, Land Quality Section. 6. Construction shall be limited to 2000' of contiguous road corridor until all cuts, fills, and ditches are stabilized for that 200' section. Upon stabilization of that section another 2000' section can be constructed and stabilized. 7. All stream crossings and perennial streams will be aligned with the natural stream patterns above and below the proposed road. Arch culvers will be used, and footers will be constructed in undisturbed banks away from the stream flow. 8. Proceed with grading clearing and grubbing note: No off -site disposal of material is allowed unless the disposal site has an approved erosion control plan. 9. Seed and place erosion control matting on all cut and fill slopes that are not rock immediately upon completion of slope stabilization. 10. All temporary stream and creek crossings for equipment during construction shall be made using temporary bridges. No stream bank or stream bed disturbance shall be allowed for equipment crossings. 11. Seed and mulch denuded area within 15 days after finished grade and established. Seed and soil amendments shall be placed on a prepared seedbed at the following rates per acre. Straw mulch shall be tacked with tacking agent applied by hydro -seeder. Lime 4,000lbs Fertilizer (10-10-10) 1,000 lbs Ky-31 Fescue (POA Pratensis) 100 lbs Straw Mulch 60-80 Bales For summer seeding add to the above: German Millet (Setaria Italica) 40 lbs Small -stemmed sudan grass 50 lbs For winter seeding add to the above: Rye Grain (secase cereale) 120 lbs If hydro -seeding, wood cellulose may be used in addition to straw mulch at the rate of 1,000 lbs per acre. All seeding shall be maintained, watered etc.., until a permanent vegetative ground cover is established over all disturbed areas. For all slopes 2:1 or steeper add to the above: Pure live seed switchgrass 4 lbs Brown top millet or pearl miller 8 lbs Grain sorghum 2 lbs All slopes 2:1 or steeper shall be covered by erosion control matting Native Seeding The correct seedbed pH is 5.5 to 6.5 Apply zero nitrogen at planting Incorporate soil amendments into topsoil/root zone before seeding Firm seedbed before seeding (travel with dozer cleats). Seeding depth for all native SSP Except E.Gamagrass need to be 1/4" -'/2". Greater depths cause high seed mortality. Specialized seeding implements are required. Seed mixes and rates to match seeder used. A no -till drop seeder or broadcaster with precision metering to control small seed flow and picker wheel agitators to handle fluffy seed are best suited for native seed. Native Plant Seeding Mix for Stream or Riverbank Stabilization Seeding for stream or riverbank stabilization shall be a mixture of native grasses, plants and trees. Native plant mix shall include the following: Grasses - Big Bluestein, Indian Grass, Little Bluestein, and Switchgrass 15 lbs/acre each August thru May - Greenrye 25 lbs/acre May 1 thru August - Millet 25 lbs/acre Trees - Silky Dogwood, Silky Willow, Hazel Alder, Elderberry Native plant mix variations shall be approved by engineer Note: No fertilizer shall be used within 10' of top of stream or river bank. NPDES Permits - Note - For Projects Requiring NPDES Permits, The Following Stabilization Schedule Shall Apply: Site Area Description Stabilization Timeframe Stabilization Timeframe Exce tions Perimeter Dikes, Swales, 7 Days None Ditches and slopes High Quality Water (HQW) 7 Days None Zones Slopes Steeper than 3,1 7 Days If slopes are 10' or less in Length and are not steeper than 2:1, 14 days are allowed Slopes 3:1 cr flatter 14 days 7-days for slopes greater than 50 feet in length All other areas with slopes 14 days None(Except for perimeters and flatter than 4:1 HQW zones) 12. Maintain soil erosion control measures until permanent round cover is established 13. Remove soil erosion control measures and stabilize these areas. 14. Request final approval by the North Carolina Department of Environment and Natural Resources, Division of Land resources, Land Quality Section. i 1 Norfolk- Southern ROW 122 - / / N 2l3 2120 \ A138 2124 2126 0 2140 2128 I2130 1 2144 2132 1 `C 2146 2134 0 2136 / 2148 G 2138 11-7 OSR pyS2 \ 2154 2156 21Sg Ba6p � MI6 a 0 I AI q 0L� qy a~ N ✓.1 1 \ \ \ � \� � �I �Iq Algs djgq ✓yN O Faa PC daly .N. r .N. r✓ Ln ✓ eN+ N r /y d q O rU A ol cD o A�OND O W �oo ���` Le Contour Index Contour Inter — Property Boundary — Rail Road Paved Road Unpaved Road and Parking ZZ ` COMPANY: D Grove Stone and Sand Company � p Y HEDRICK INDUSTRIES S ale 1' =100' C z Q LOCATION: PO BOX 425 B ; Pre -cast Plant Henderson Co. Swannanoa, NC 28778 LU SUBJECT: / A 11 /18/21 Existing Site Conditons SCALE: DRAWN BY: DATE: SHEET: SYM. DATE REMARKS Existing Site Conditions 1 "-1 QQ' RJC 11 18 21 3 OF 9 / Double Below - Proposed Sediment Basin #2 ' / / with concrete riser structure, porous baffles, & skimmer, Top of Berm: 2022 Top of Riser: 2021 Bottom of Basin: 2116 Legend Contour Index Contour Inter Silt Fence Property Boundary Rail Road Permanent Ditch Paved Road Unpaved Road and Parking Temporary Ditch Limits of Disturbance N Scale 1 "=50' / Pr9oosed Sediment Basin # 1 Ith concrete riser structure, porous baffles, & skimmer Top of Berm: 2020 Top of Riser: 2019 Bottom of Basin: 2114 �7i- —� n it 1'r� �Rl .,pP L n Propose Sediment Basin with Rock Dam #3 v �+ �� rOu (see der with r & porous baffles — - Weir Elevation: 2040 I, p of Rock Dam: 2042 uble Row Sil nce Ij / �/\ Bottom of Basin: 2134 elow Basi Proposed Silt Fenc (TYP) II + \ �'36 Class A rip rap _ apron min. 12' length Proposed Pe ane t _ _ 'A� / � / 1r-1,_ 7 —_ > Ton 1 Ditch 45 p0 �� PD ]r � PD— 1r _ ®� r of Rac�am: 204 i _ Pb Proposed Pe nent \ II _ Bottom of Basin: 2138 Ditcb 94It y v I ' let Protection 1t Cla A rip rap\—,t /^ _ — �r —,r I Proposed Permanent % hr`�p 1 "_ _ �_— _ Dit itch #3 /rInlet Pr tection ' PD V "oE�_ / , / , 7 PDClace 4 vivaa I — _�1� nE_n 1 i 1 I { �r_� S O a� O O N Proposed Sediment Ba n with Rock Dam #4 with rock & porous 1Xaffles / Weir Elevation: 245 da_ - rr"�seu Proposed anent iT o/ Li its of Disturbance �� ' \ I _-_ - ° n�"�^� ' / , I ' i ; / , - \ - Temporary Slope Drain "�.�n� ' IV 0.74 Acres \ T n,/ %/ I ' 221s20420_ � 18" Dia. HDPE Pipe "�IPD/ \ \ i' // 2/ \(see detail) Proposed Temporary 4iil �144--x-za Ditch 14 Inlet ProtectionRI ra A on(s e detail) � T�T- z 2,bb zebb 2tibm 2tih / Class A rip rap z�/ I �� 21s8 I l I l 1 �_ `L~ •b, Proposed Silt Fenc (TYP) z10 w ° IfII 1 �1 /�\--___— T _ _ 166 I 1 l 1 I l lIl o If I If I^ P1 oposed e ane nt 217o _ ' l l 1 / , / , �, / / 111 `\ PD (.� /(\ I Ditch 96 �_e\2172 / _ _-___ ,�n� / , / , / / / / , / �( Pro osed Permanent I \`�\ Temporary Slope Drain yn���"�^ten ' ' ' /, i' iii i �/ ll i' ' 'l I If;' i / ,( itch 91 Inlet Protec on I - _ T 18" Dia. HDPE Pipe l l�( ( I I Class A ri rap e he - T (see detail) ' Top of Pad Elevation: 2154 Pad Area: 2.50 acres �— - - T Proposed Temporary — --- 1 Temporary Slo e Dram h Qom I ' T Pad Slopes: 2:1 - - T Ditch p n' p 1 i L p9F� --- _ F 18" HDPE Pipe „n�n 1L Pr posed Permanent _- Temporary Slope Drain - s 1 Proposed Temporaryn", ��_ ! D tch #7 - a 18" Dia. HDPE Pipe v Ditch Proposed (see detail) T Limits of Distur ance I 0.4 Acres r \ Proposed Temporary / Top of Pad Elevation: 2172' / P posed Permaren Ditch ` - / D tch 98 Pad Area: 3.80 acres / Pad Slopes: 2:1 / roposed Silt Fenc (TYP Proposed Limits of Disturbance 22 2' b 2\ \20 2 l3p 2 Z\32 D C B A 11 /18/21 Erosion Control Plan SYM. DATE REMARKS -----=Ill 1 1 Temporary Access Road Temporary Road Constructed on already existing internal road' COMPANY: Grove Stone and Sand Company Z Q LOCATION: Pre -cast Plant Henderson Co. w "::f SUBJECT: Erosion Control Plan 6.8 Acres --- HEDRICK INDUSTRIES PO Box 425 Swannanoa, NC 28778 SCALE: DRAWN BY: DATE: SHEET: 1 11=50' RJ C 11 / 18/21 4 O F 9 1 • X X" j %." e 10 S ale 1' =100' 0 b I p ti A N m 0 • �l�o �1e2 c'j 1�Y �1 �6 N✓� o� N N c�j36 c'j3& 2140 / 2144 2146 2148 ostz 2154 2156 else �=160 168 1 D C B A 11 /18/21 Soil Map SYM. DATE REMARKS Norfolk- N A N o \ c�jl6 Bradson ale �11g 212q 2126 2128 e130 2132 2134 \ 213b 2138 votZ CD CD Ni Nan N I N r Z � Z wV I \ N✓ c'150�14g c�jY6 c�jYY Y� N �j �j �l �1 01s81�s4 ✓� 66• Y \ r m 0 11 COMPANY: Grove Stone and Sand Company Z Q LOCATION: Pre -cast Plant Henderson Co. w SUBJECT: Soil Map Evard HEDRICK INDUSTRIES PO Box 425 Swannanoa, NC 28778 SCALE: DRAWN BY: DATE: SHEET: 1 11=100' I RJ C 111/18/211 5 OF 9 II Proposed Sediment Basin #2 with concrete riser structure, porous baffles, & skimmer Top of Berm: 2022 Top of Riser: 2021 Bottom of Basin: 2116 Legend 7-Day Seeding R quirement Area 14-Day Seeding equirement Area -- Notes: *All Basins will b seeded within 14-day's of completion *Pad 1 and Pad 2 lop,es will be seeded within 7-days of inactivity. At th completion of the Pads ail slopes will be seeded and then overed with RECP (Blanket Double Net). The Pad surface ea will be seeded according to the seeding plan attached. *See detail for RECP. Pr osed Sediment Basin # 1 ><th concrete riser structure, porous baffles, & skimmer Top of Berm: 2020 To of Riser: 2019 p Bottom of Basin: 2114 O \_ Pp pe y - Propose Sediment Basin with Rock Dam #3 )6 r a- with r & porous baffles II >� n ��� ail) � � Weir Elevation: 2040 li / IT, op of Rock Dam: 2042 Proposed Silt Fenc (TYP) Bottom of Basin: 2134 I I� ( I Proposed Pe anent `� N, ''� ,�'/\ I I p Ditch 95 PI) Jr J(— JI Nan Proposed Pe ent I �: Ditcb 94 If �J[ — lI If — 31 — _ I I _ r =�T AD PD Jr J: - J(_ ,r _ °--°--�_ Proposed Permanent 7 PD i(� J I Ditch #� Proposed \ \'! \ \ I --= °�°�°�° 1 1 ; , 1 i PD P\ J( If I P ��l� 4d `, �° ' , r i D�P� JI // / Proposed anent 1 Limits Of Disturbance �!� \ \ E-°f-°�- I / ' I /(/ D\ ` % I D 2 /I 0.74 Acres \ e Temporary Slope Drain 18" Dia. HDPE Pipe Proposed Temporary ( ) \\� �'d�\ - T Ditch \ \ i i // / , 1 i {l Riprap Apron , e aec�i I // I Proposed Pe ane Proposed Sediment Ba with rock & porous ff Weir Elevation- 5 Top -of R c Dam: 2047 Bottom of Basin: 2138 J / t'rop p- h" I/ 0., 2� a2 2~ 2 b 2~ a0 2~ 2\ 0 L & ' ~X bo ��PD / ` '>l-.--Proposed Slit Fenc (TYP) J! \ Z b 10 with Ro Dam #4 s da_�y D1tC 16 °\ -° l 1 / 1 1 / l I Pro osed iv 11� P ermanent iv ti h ��\ I 1 1 I I P 1 / __ --- � °� ° ' � i � iii 1 , � 1 � ( � / d \ Itch ,� 1 I __ - T Temporary Slope Dram-3°�°�°�° In l r ; r r ' l i 1�'� ! -�� Q I - T 18" Dia. HDPE Pipe°�°�°� _ ' 1 / �' / ' i , p J! Top of Pad Elevation: 2154 r°�Y Pad Area: 2.50 acres - T Proposed Temporary / Temporary Slope Drain°°°°�° / / r Pad Slopes: 2:1 --- T Ditch° \ 18" HDPE Pipe V / / Pr osed Permanent T I- �- p Temporary Slope Dram - _ Proposed Temporary°°° L J� -��1— �' Ditch #7 ' T " I --- T 18 Dia. HDPE Pipe --- _ T Ditch \ \ \ I - T r- T Proposed >���. A _ Limits of Distur anc �, 0.4 Acres I A°\ I T Proposed Temporary ---- _ T To of Pad Elevation: 2172' P posed F'erma en �>'e` Ditch _ T p D tch 98 — — I T --- r Pad Area: 3.80 acres Pad Slopes: 2:1 roposed gilt Fenc (TYP) - 1> Ae 2a 2 I 2� r§1 �2 i v M N 0 50 ' 'c Scale I"=b0• J D C B A 11 /18/21 Seeding Map SYM. DATE REMARKS Temporary Road Constructed on already existing internal road COMPANY: Grove Stone and Sand Company Z Q LOCATION: Pre -Cast Plant Henderson Co. w � SUBJECT: Seeding Map Proposed Limits of Disturbance 6.8 Acres -__ Temporary Access Road I HEDRICK INDUSTRIES PO Box 425 Swannanoa, NC 28778 SCALE: DRAWN BY: DATE: SHEET: 1 11=50' RJ C 11 / 18/21 6 of 9 MIN, 10 GA. LINE WIRES Norfolk -Southern Original Ground: Finished Grade: B' MAX. VARIABLE AS DIRECTED BY THE ENGINEER FRONT VIEW STEEL POST WOVEN WIRE FABRIC SILT FENCE FABRIC NO. 57 STONE FILL SLOPE GRADE ; AIMUM COVER OVER SKIRT wo ANCHOR SKIRT AS DIRECTED BY ENGINEER ** I. 12-1/2 GA. 'ERMEDIATE RES GRADE SIDE VIEW )K* FOR REPAIR OF SILT FENCE FAILURES, USE NO, 57 WASHED STONE, AS AN ANCHOR WHEN SILT FENCE IS PR❑TECTING CATCH BASIN, USE SILT FENCE ONLY WHEN DRAINAGE AREA DOES NOT EXCEED 0,25 ACRE AND NEVER IN AREAS OF CONCENTRATED FLOW NOT TO SCALE Silt Fence Table 6.62a Silt Fence Requiments Slope Slope Length (ft) Maximum Area (ftz ) <2% 100 10,000 2 to 5% 75 7,500 5 to 101/. SO 5,000 10 to 201/. 25 2,500 >20% 1 15 1,500 Notes: • Silt fence shall be placed at a min. 5' from toe of slope E D = PIPE DIA, IN INCHES Q P-APPTr RipRap Apron Sizing (per fig. 8.06a) Basin Length Width Depth Class # 1 12' 18' 2411 B riprap #2 10' 12' 12" B riprap NOTE. MIN. 3000 PSI CONCRETE REQUIRED THROUGHOUT. ZIREQUIREMENET DRAINAGE STRUCTURE TOP VARIES WITHAPPLICATION,SEE CAl T BASIN CATIOSCHEDULE (VERIFY TRAFFIC LOAD FOR EACH TOP) I I I I CONCRETE CATCH BASIN - EXTENSION AISER; LENGTH AND MOTH TO MATCH BASIN, HEIGHT - VARIES WITH PROPOSED GRADE (SEE CATCH BASIN SCHEDULE) I I PRE-CRST CONCRETE CATCH BASI - - IENCTH, W111TH AND HII-I VARIE _ - BY MANUFACTURER AND APPUCAI SEE CATCH BASIN SCHEDULE AND VERIFY MATH SUPPLIER V-87 WALL THICKNESS PITH KNOCKOUT PANEL NO PORTION OF STRUCTURE SHALL BE REMOVED. DAMAGED OR OTHERWISE ALTERED EXCEPT THOSE AREAS DESONATED AS KNOCKOUT PANELS (3) Nc. 4 1 KNOCKOUT (TYP. EACH n -- L] I INLET �- II CONCRETE INVERT INSTALLED J AT A GONSTAMT SLOPE FROM INLET TO OUTLET Cross -Section A' -A' Not to Scale filter fabric typical Permanent Trapezoidal Ditch Rip Rap Detail All ditches will be sized accordingly: Top Width: I Bottom Width: 2' Side Slopes: 3 to 1 D50: 18" INLET 1 6• t' I iB 27VARIES s' I I OUTLET SECTION A (PLAN) KNOCKOUT PANEL N (TYP. EACH SIDE) A PIPE TO BE FLU9-I 4N TH INSIDE WALL OF BASIN AND GROUTED SMOOTH INLET I 1 )r 1 PROPOSED PIPE INVERT - BOTT PIPE AT FLOW L Pre-Cast Riser SECTION S CATCH BASIN 1.11 (SEE SCHEDULE FOR TYPE) Nn 4 R®AR A PABIN HEIGHT CATCH 11 51 -APPROVED STEPS REQUIRUYT VARIES BY FDR SIRUCTl1RE5 DYER AND MANuf S-6• IN DEPTH. Ir D.C. -Na 4 REIMR G B" C.Q.. EACH DIRECTON -3DD PSI CONGREFE TO FORM INVERT; PROVIDE CONSTANT SLOPE FROM ALL INLETS TO OUTLET. -FOR POOR SOL AND/GR WET CONDITIONS, T2. OF 7 STCME MAY BE REQUIRED - CONTRA CTOR MUST VERIFY WITH ENGINEER BEFORE PLACNG BCx- BDIES_ 1, INLET ZONE (A) SHGULU HAVE 26% OF SURFACE AREA. FIRST CELL (B) SHOULD HAVE 25% OF SURFACE AREA. SECOND CELL (C) SHOULD HAVE 25% OF SURFACE AREA AND THE OUTLET ZONE (D) SHOULD HAVE 25% OF SURFACE AREA. 2. GRADE THE BASIN 50 THAT THE BOTTOM IS, LEVEL FRONT TO BACK AND S1DE TO BIDE. s. STEEL POSTS SHOULD BE DRVEN TO A DEPTH OF 24 INCHES. SPACED A MAXIMUM OF 4 FEET APART 4- 00 NOT SPLICE FABRIC USE ONE CONTININBUS PIECE ACROSS BASIN- S- BAFFLES SHALL RE TIED INTO THE SIDES OF THE BASIN AND SECURED TO THE ROTTCu OF THE BASIN BY TRENCHING OR STAPLES. TO PREVENT BYPASS. 6- INSPECT BAFFLES AT LEAST ONCE A MEEK AND AFTER EACH RAINFALL MANE ANY REPAIRS IMMEDIATELY_ REMOVE SEDIMENT DEPOSITS WHEN IT REACHES HALF FULL 7. REFERENCE NCOENR LAND WIAUTY SECTION BAFFLE DESIGN MANUAL 6.65. (FF } CLASS I RIPRAP OUTLET LLLL LLLLL LLLLLL LLLLL LLLLL LLLL - LLL LLLLL LLLLLL LLLLL LLLLL LLL L L LLLLL LLLLLL LLLLL LLLLL LL L LLLLL LLLLLL LLLLL LLLLL L LLLLL LLLLLL LLLLL LLLLL LLLLL LlI LLLLL LLLLL 11 I +-COR MESH OR SIMILAR. STAPLED OR TRENCHED INTO BOTTOM ANC SIDES SECTION Al �O g,wm sus 11 11 NUNN Ed �onon -vnm POROUS BAFFLES TOP OF FABRIC SHOULD BE 6' HIGHER THAN SPILLWAY INVERT. TOP OF BAFFLES SHOULD BE 2" LOWER THAN TOP OF THE BERNS- BAFFLE MATERIAL TO BE SECURED TO BOTTOM AND SIDES OF BASIN uSNC 12' LANDSCAPE STAPLES O 12` MAXIMUM SPACING �K.:[:= 717�1�16l11�L1� INLET ZONE 25% OF SURFACE AREA (A) FIRST CHAMBER 25% OF SURFACE AREA (B) SECa.'D CHEER 26. GF SURFACE AREA (C) OUTLET 204E 25% OF SURFACE NOTE AREA (0) > SEE TRAF/BASIN SCHEDULE FOR BAFFLE SPACING. 2.. SEE SEDIMENT BASIN MONITORING GAUGE DETAIL FOR MCNITGRING GAUGE 5PE�IFIC.ATIGN$ AND IN5TAU_ATIQN. Porous Baffles Detail Skimmer Old Hendersonville Rd WATER ENTRY UNIT WITH TRASH SCREEN GENERAL NOTES: L PROPER DESIGN MUST BE COMPLETED TO MINIMIZE PIPING AROUND DISCHARGE PIPE. 2. PROPER ORIFICE OPENING MUST BE SELECTED TO ENSURE POND DRAINS IN CORRECT AMOUNT OF TIME. MODIFICATIONS MAY BE REQUIRED IF FIELD CONDITIONS WARRANT A CHANGE. 3. EMBANKMENT MUST BE COMPACTED TO DESIGN SPECIFICATIONS. 4. EMERGENCY SPILLWAY MUST BE CORRECTLY SIZED AND EROSION ORIFICE OPENING INSIDE PROTECTION INSTALLED. THE HORIZONTAL TUBE WITH 5. EROSION PROTECTION MUST BE INSTALLED ALONG THE EMBANKMENT AND AT A CONSTANT HYDRAULIC THE DISCHARGE END OF THE PIPE. HEAD 6. INSPECT SYSTEM REGULARLY TO ENSURE IT IS FUNCTIONING IN A CORRECT MANNER. 7. EIGHT SIZES OF SKIMMERS ARE AVAILABLE, REFER TO THE FLOW SHEET, CUT SHEET, AND INSTRUCTIONS ON WEB SITE FOR EACH SIZE. SCHEDULE 40 PVC PIPE (BARREL OR ARM> ARTHEN EMBANKMENT MAXIMUM HEIGHT OF FLOAT WHEN NO MERGENCY SPILLWAY OTHER STORM WATER DISCHARGE PENINGS EXIST FLEXIBLE (MAJOR STORM EVENT) HOSE INVERT OF LOWEST STORM PVC VENT GRATE ATER DISCHARGE OPENING IPE (MINOR STORM EVENT) T ❑ P VIEW LOAT FLEXIBLE HOSE MUST BE PVC VENT SECURELY FASTENED TO PIPE STORM WATER HE WATER QUALITY DISCHARGE-', ISCHARGE DISCHARGE OPENING OPENING OUTLET PIPE. ENTRY UNIT [ I I I I �-- \PIPE D (BARREL OR C ARM) END SIDE VIEW MAINTAIN DEPRESSION TO in OEM VIEW (N❑ SCALE) MINIMIZE CHANCE OF SKIMMER BECOMING STUCK DRAWN BY T. R. EVANS FAIRCL❑TH SKIMMER ®DISCHARGE SYSTEM WITH OUTLET WVW.FAIRCLOTHSKIMMER.CfM STRUCTURE TELFAY, (91 (BIB> -12 1244 FAY, csFAI CLOTH KI EMAIL, WARRENQFAIRCLOTHSKIMNER.COM 5' Min Selected Fill Placed in Layers and Compacted Filter Fabric Cut Off Trench Sediment Basin with Pre -Cast Riser and Skimmer SCM - Precast Sediment Basin Schedule with Skimmer Bottom Barrel Barrel Barrel Barrel Barrel Riser Spillway Spillway Berm Skimmer Baffle Name Length (ft.) Width (ft.) Depth (ft.) Riser Size Elev. Size (in.) Inv. Elev. Inv. Out Length (ft.) Slope (%) Invert Length Elev. Elev. Orfice Rows Basin #1 100 50 6 2114 24" 2115 2114 32 1 5'x 5' 2118 12 2019 2020 2.5" 3 Basin #2 75 38 6 2116 18' 2116 2116 33 1 5' x 5' 2020 12 2021 2022 2.5" 3 Note: Length and Width are based on bottom dimension of sediment basin T 2' Filter Fabric Figure 6.63a Rock Dam cross section Gravel facing Spil Rock Abutment 5' f;r d ,5 jv Sr Cross -Section View Weir Elevation Rock Dam cross-section Figure 6.63a Rock Dam plan view and spillway details Rock Abutment Sy - Flow Min. 1.5' thick Rock Apron Spillway Details Top of rock abutment ,1 2' min Slope foundation ` P � ���." Spillway Filter fabric Rock Dam plan view and spillway details SCM - Precast Sediment Basin Schedule with Rock Dam Top of Bottom Spillway Name Length (ft.) Width (ft.) Depth (ft.) Rock Elev. Elev. Dam Basin #3 75 38 6 2134 2040 2042 Basin #4 84 42 6 2138 2047 2047 ;round Level apron Compacted soil 2' ruin i.'r*� •" ' .'.'r ','-F ' •..'. *• • r f '• ;'•rt, r : ,, 18'T lm l ri -- "`"."'* r• a ar+a •' f F r' j • ti a r •. N a w�� a II 4ffj11 � jfijee r typical Figure 642-Oa Temporary earthen diversion dike. Notes: • Temporary diversion ditches need to be reworked as slopes are constructed and pad is raised in elevation Stabilize outlet 10' spacing Plastic corrugated pipe .� 4 ' mint level section Figure 6.32a Cross section of temporary slope drain. Diversion Dike ItL Top of diversion Natural A ground's 1' min 1111=11Iill[[[! r . Diversicn II channel �NO\N r =:fi}i 4` �¢ min Island over inlet F •.•••.' My ;•fir{r :•�•S :e� ry +� •... •;'' �`:���.: R_ . 1.5 ' min Notes: • Pipe sections shall be joined using water tight seals • Pipe should extend from inlet to bottom of slope and extend 4' at all times. • Slope drains need to be reworked and extended as fill slopes are built Top of hand -compacted fill (island) 9M UNDISTURBED OR STABILIZED SLOPE SINGLE NET EROSION CONTROL BLANKET I � o MSN. I6u"I� EROSION CONTROL BLANKET ANCHOR TRENCH TRENCH DETAIL 2"_4" �MIN.� oq" Y F.� Oj 4" A w TMIN. LAP OVERLAP SEE NOTECO HORIZONTAL JOINT DETAIL / fOVND SV —) I I I-1 I I-1 I I-1 I I-1 6Y'1SS'NG GR LONGITUDINAL JOINT DETAIL EROSION CONTROL BLANKET STAPLE DETAILS (USE MANUFACTURER'S RECOMMENDED STAPLE PATTERN) EROSION CONTROL PLAN LEGEND: EROSION CONTROL BLANKET ``�,,� 2 SEE NOTED EROSION CONTROL BLANKET SLOPE INSTALLATION GENERAL NOTES O EROSION CONTROL BLANKETS ARE INTENDED TO BE USED AS AN IMMEDIATE MULCH COVER FOR DISTURBED SLOPES THAT HAVE BEEN TEMPORARILY OR PERMANENTLY SEEDED. OB EROSION CONTROL BLANKETS MAY ALSO BE USED AS CHANNEL LINERS WHERE THE ANTICIPATED MAXIMUM SHEAR STRESS IS LOW. REFER TO EC-STR-36 FOR INSTALLATION DETAILS. © EROSION CONTROL BLANKETS SHALL BE INSTALLED ACCORDING TO MANUFACTURERS SPECIFICATIONS. WHEN NOT AVAILABLE. INSTALL ACCORDING TO NOTES D THRU J. O STEP ONE: SITE PREPARATION THE SITE SHOULD BE FINE GRADED TO A SMOOTH PROFILE AND RELATIVELY FREE FROM ALL WEEDS, CLODS, STONES, ROOTS, STICKS, RIVULETS, GULLIES, CRUSTING AND CAKING. FILL ANY VOIDS AND MAKE SURE THE SLOPE 15 COMPACTED PROPERLY. EO STEP TWO: SEEDING MU SEEDING WITHOUT LCH SHOULD BE APPLIED TO THE AREA TO BE VEGETATED. FO STEP THREE: PREPARE THE ANCHOR TRENCH AT THE TOP OF THE SLOPE EXCAVATE AN ANCHOR TRENCH 6 INCHES DEEP BY 6 INCHES WIDE. THE EROSION CONTROL BLANKET WILL BE ANCHORED INTO THE TRENCH BY STAPLES. ALLOW A MINIMUM OF 3 FEET FROM THE OR OF THE SLOPE TO THE ANCHOR TRENCH. © T P F R R TH R TR A T TH A H R TR H BEGIN EROSION CONTROL BLANKET PLACEMENT 30 INCHES ABOVE THE ANCHOR TRENCH. RUN THE EROSION CONTROL BLANKET INTO THE ANCHOR TRENCH. ANCHOR THE EROSION CONTROL BLANKET WITH STAPLES ONE FOOT ON CENTER IN THE ANCHOR TRENCH. BE SORE TO DRIVE STAPLES OR STAKES FLUSH WITH THE SOIL SDREACE. BACKFILL THE ANCHOR TRENCH AND COMPACT THE SOIL. PLACE SEED OVER THE COMPACTED SOIL. COVER THE COMPACTED SOIL WITH THE REMAINING 12 INCHES OF THE TERMINAL END OF THE EROSION CONTROL BLANKET. STAPLE OR STAKE TERMINAL END DOWN SLOPE OF THE ANCHOR TRENCH ON ONE FOOT CENTERS. OH STEP FIVE: EROSION CONTROL BLANKET DEPLOYMENT STARTING AT THE CREST OF THE SLOPE, ROLL THE EROSION CONTROL BLANKET DOWN THE SLOPE IN A CONTROLLED MANNER. APPROXIMATELY EVERY 20-25 FEET PULL THE EROSION CONTROL BLANKET TO TAKE OUT ANY EXCESS SLACK. THE GOAL IS TO HAVE THE EROSION CONTROL BLANKET CONTOUR AND INITIATE CONTACT WITH THE SOIL. SECURE THE OVERLAP DR THE EDGES WITH STAPLES. THE TYPICAL INSTALLATION WILL REQUIRE ONE STAPLE PLACED AT THREE TO FIVE FEET INTERVALS ALONG THE VERTICAL LENGTH OF THE EROSION CONTROL BLANKET, STAPLES SHOULD BE STAGGERED EVERY IS TO 24 INCHES HORIZONTALLY ACROSS THE EROSION CONTROL BLANKET. IF THE EROSION CONTROL BLANKET NEEDS TO BE SPLICED IN THE MIDDLE OF A SLOPE BE SURE THE EROSION CONTROL BLANKET [5 "SHINGLED" WITH UP-SLGEE ER0510N CONTROL BLANKET OVERLAPPING THE DOWN -SLOPE EROSION CONTROL BLANKET. THERE SHOULD BE A MINIMUM OF 4-INCHES OF OVERLAP IN A SPLICE. USE A STAPLE CHECK SLOT TO SECURE THE OVERLAP. A STAPLE CHECK SLOT IS MADE BY PLACING A ROW OF STAPLES 4-INCHES ON CENTER AND THEN PLACING A SECOND ROW OF STAPLES 4-INCHES ON CENTER, ON FROM THE F[RST ROW. JO STEP SEVEN: SECURING THE EROSION CONTROL BLANKET AT THE TOE OF SLOPE ROLL THE EROSION CONTROL BLANKET 24-INCHES PAST THE TOE OF THE SLOPE. STAPLE OR STAKE TERMINAL END OF THE EROSION CONTROL BLANKET ON ONE FOOT CENTERS. OK ONLY EROSION CONTROL BLANKETS LISTED ON THE QUALIFIED PRODUCTS LIST MAY BE USED. O EROSION CONTROL BLANKETS FOR SLOPE INSTALLATION SHALL BE PAID FOR UNDER THE FOLLOWING ITEM NUMBERS: 801-02 SEEDING (WITHOUT MULCH) PER UNIT 801-02.01 CROWN VETCH MIXTURE IWI THOUT MULCH) PER UNIT 601-02.09 TEMPORARY SEEDING (WITHOUT MULCxI PER UNIT 805-12.01 EROSION CONTROL BLANKET (TYPE I) PER SQUARE YARD S05-12.02 ERDSION CONTROL BLANKET (TYPE ]II PER SQUARE YARD 805-12.03 ERDSION CONTROL BLANKET (TYPE III] PER SQUARE YARD SO5-12,04 EROSION CONTROL BLANKET (TYPE IV) PER SQUARE YARD PAYMENT SHALL INCLUDE ALL MATERIALS AND LABOR NECESSARY FOR CONSTRUCTION AND MAINTENANCE OF EROSION CONTROL BLANKETS. NOY FROM) ESE ESTDCNAN'EODE EIRH34 oR 5"RFROM LENERdLMNOTO ITEM G013.01 1 ARE 0 LOONOER �;9-11, 1 CIANGEDT GENERAL HOTECxANCED PLAN VIEN AND LOXCI TUDINAL SEAM VEIN. GREE DDED STANDARD o DFTAILG. ICED INSTALLATION REV. N- -12MINOR EDITS T OflAWI NG AND GENERALNOTES p MCNa+ REV) S]DN -- FHWA APPROVAL NOi REQUIRED. NOT TO SCALE RARsrMaNsr ®¢ VNAwoP.WpApl EROSION CONTROL BLANKET FOR SLOPE INSTALLATION 10-26-92 EC-STR-34 GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH THE NCGO1 CONSTRUCTION GENERAL PERMIT Implementing the details and specifications on this plan sheet will result in the construction activity being considered compliant with the Ground Stabilization and Materials Handling sections of the NCGO1 Construction General Permit (Sections E and F, respectively). The permittee shall comply with the Erosion and Sediment Control plan approved by the delegated authority having jurisdiction. All details and specifications shown on this sheet may not apply depending on site conditions and the delegated authority having jurisdiction. SECTION E: GROUND STABILIZATION Required Ground Stabilization Timeframes Stabilize within this Site Area Description many calendar Timeframe variations days after ceasing land disturbance (a) Perimeter dikes, swales, ditches, and 7 None perimeter slopes (b) High Quality Water 7 None (HQW) Zones (c) Slopes steeper than If slopes are 10' or less in length and are 3:1 7 not steeper than 2:1, 14 days are allowed -7 days for slopes greaterthan 50' in length and with slopes steeper than 4:1 -7 days for perimeter dikes, swales, (d) Slopes 3:1 to 4:1 14 ditches, perimeter slopes and HQW Zones -10 days for Falls Lake Watershed -7 days for perimeter dikes, swales, (e) Areas with slopes ditches, perimeter slopes and HQW Zones flatter than 4:1 14 -10 days for Falls Lake Watershed unless there is zero slope Note: After the permanent cessation of construction activities, any areas with temporary ground stabilization shall be converted to permanent ground stabilization as soon as practicable but in no case longer than 90 calendar days after the last land disturbing activity. Temporary ground stabilization shall be maintained in a manner to render the surface stable against accelerated erosion until permanent ground stabilization is achieved. GROUND STABILIZATION SPECIFICATION Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the techniques in the table below: Temporary Stabilization Permanent Stabilization • Temporary grass seed covered with straw or • Permanent grass seed covered with straw or other mulches and tackifiers other mulches and tackifiers • Hydroseeding • Geotextile fabrics such as permanent soil • Rolled erosion control products with or reinforcement matting without temporary grass seed • Hydroseeding • Appropriately applied straw or other mulch • Shrubs or other permanent plantings covered • Plastic sheeting with mulch • Uniform and evenly distributed ground cover sufficient to restrain erosion • Structural methods such as concrete, asphalt or retaining walls • Rolled erosion control products with grass seed POLYACRYLAMIDES (PAMS) AND FLOCCULANTS 1. Select flocculants that are appropriate for the soils being exposed during construction, selecting from the NC DWR List of Approved PAMS/Flocculants. 2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures. 3. Apply flocculants at the concentrations specified in the NC DWR List of Approved PAMS/Flocculants and in accordance with the manufacturer's instructions. 4. Provide ponding area for containment of treated Stormwater before discharging offsite. 5. Store flocculants in leak -proof containers that are kept under storm -resistant cover or surrounded by secondary containment structures. EQUIPMENT AND VEHICLE MAINTENANCE 1. Maintain vehicles and equipment to prevent discharge of fluids. 2. Provide drip pans under any stored equipment. 3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the project. 4. Collect all spent fluids, store in separate containers and properly dispose as hazardous waste (recycle when possible). 5. Remove leaking vehicles and construction equipment from service until the problem has been corrected. 6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products to a recycling or disposal center that handles these materials. LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE 1. Never bury or burn waste. Place litter and debris in approved waste containers. 2. Provide a sufficient number and size of waste containers (e.g dumpster, trash receptacle) on site to contain construction and domestic wastes. 3. Locate waste containers at least 50 feet away from storm drain inlets and surface waters unless no other alternatives are reasonably available. 4. Locate waste containers on areas that do not receive substantial amounts of runoff from upland areas and does not drain directly to a storm drain, stream or wetland. 5. Cover waste containers at the end of each workday and before storm events or provide secondary containment. Repair or replace damaged waste containers. 6. Anchor all lightweight items in waste containers during times of high winds. 7. Empty waste containers as needed to prevent overflow. Clean up immediately if containers overflow. 8. Dispose waste off -site at an approved disposal facility. 9. On business days, clean up and dispose of waste in designated waste containers. PAINTAND OTHER LIQUID WASTE 1. Do not dump paint and other liquid waste into storm drains, streams or wetlands. 2. Locate paint washouts at least 50 feet away from storm drain inlets and surface waters unless no other alternatives are reasonably available. 3. Contain liquid wastes in a controlled area. 4. Containment must be labeled, sized and placed appropriately for the needs of site 5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from construction sites. PORTABLE TOILETS 1. Install portable toilets on level ground, at least 50 feet away from storm drains, streams or wetlands unless there is no alternative reasonably available. If 50 foot offset is not attainable, provide relocation of portable toilet behind silt fence or place on a gravel pad and surround with sand bags. 2. Provide staking or anchoring of portable toilets during periods of high winds or in high foot traffic areas. 3. Monitor portable toilets for leaking and properly dispose of any leaked material. Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace with properly operating unit. EARTHEN STOCKPILE MANAGEMENT 1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least 50 feet away from storm drain inlets, sediment basins, perimeter sediment controls and surface waters unless it can be shown no other alternatives are reasonably available. 2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of five feet from the toe of stockpile. 3. Provide stable stone access point when feasible. 4. Stabilize stockpile within the timeframes provided on this sheet and in accordance with the approved plan and any additional requirements. Soil stabilization is defined as vegetative, physical or chemical coverage techniques that will restrain accelerated erosion on disturbed soils for temporary or permanent control needs. ONSITE CONCRETE WASHOUT STRUCTURE WITH LINER �r na ¢ �r rrt�mM ]aT • wma�rs t,..� � m.� c�rrry I� Q nv<Es 9$ J"T sE7aaw B c�rwar Iwaao stow¢ SECTION I nncumm w rm.n mvo �umM nnwmcn ni VI.AW IOTCG ]EVGE tl8'MLY MW �T�ECTIRI A -A rELll 1•f01G OEVIEE UB'XEI. 10U 0 TIE EOLNEIE VA&UIIT L TIE LOOEIE VASIOIT STMICTwES SIwLL ry S1wIC1wES SIwLL BE IwpTACEO ec IwwrA�En vlEw TIE I.�• amu vinl TIE I.tWO sao SR• IE/GES m% 6 11E STRUETwEd 6�EIES JOJt 6 TIE STRIIETWES c�v�ctTr. c�v�ctx m 11Wf0E Aomwm 160CG rNOtlIY Vllw A M001M ELAN acoEurc vAu•ur stwETUE IEE06 m ec 2LAt1 � ]IIEIE6 Is r1EFJu.� c�rwn Iwaao vrtx st•w¢ 1•TOG av¢e. asoEarc vAnwr stwETwr IEISC m K c�rolr w1NR20 vrtx BELOW GRADE WASHOUT STRUCTURE ABOVE GRADE WASHOUT STRUCTURE IR m xME Im m 1fIiE CONCRETE WASHOUTS 1. Do not discharge concrete or cement slurry from the site. 2. Dispose of, or recycle settled, hardened concrete residue in accordance with local and state solid waste regulations and at an approved facility. 3. Manage washout from mortar mixers in accordance with the above item and in addition place the mixer and associated materials on impervious barrier and within lot perimeter silt fence. 4. Install temporary concrete washouts per local requirements, where applicable. If an alternate method or product is to be used, contact your approval authority for review and approval. If local standard details are not available, use one of the two types of temporary concrete washouts provided on this detail. 5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk sections. Stormwater accumulated within the washout may not be pumped into or discharged to the storm drain system or receiving surface waters. Liquid waste must be pumped out and removed from project. 6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it can be shown that no other alternatives are reasonably available. At a minimum, install protection of storm drain inlet(s) closest to the washout which could receive spills or overflow. 7. Locate washouts in an easily accessible area, on level ground and install a stone entrance pad in front of the washout. Additional controls may be required by the approving authority. 8. Install at least one sign directing concrete trucks to the washout within the project limits. Post signage on the washout itself to identify this location. 9. Remove leavings from the washout when at approximately 75% capacity to limit overflow events. Replace the tarp, sand bags or other temporary structural components when no longer functional. When utilizing alternative or proprietary products, follow manufacturer's instructions. 10. At the completion of the concrete work, remove remaining leavings and dispose of in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance caused by removal of washout. HERBICIDES, PESTICIDES AND RODENTICIDES 1. Store and apply herbicides, pesticides and rodenticides in accordance with label restrictions. 2. Store herbicides, pesticides and rodenticides in their original containers with the label, which lists directions for use, ingredients and first aid steps in case of accidental poisoning. 3. Do not store herbicides, pesticides and rodenticides in areas where flooding is possible or where they may spill or leak into wells, stormwater drains, ground water or surface water. If a spill occurs, clean area immediately. 4. Do not stockpile these materials onsite. HAZARDOUS AND TOXIC WASTE 1. Create designated hazardous waste collection areas on -site. 2. Place hazardous waste containers under cover or in secondary containment. 3. Do not store hazardous chemicals, drums or bagged materials directly on the ground. NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING EFFECTIVE: 04/01/19 PART III SELF -INSPECTION, RECORDKEEPING AND REPORTING SECTION A: SELF -INSPECTION Self -inspections are required during normal business hours in accordance with the table below. When adverse weather or site conditions would cause the safety of the inspection personnel to be in jeopardy, the inspection may be delayed until the next business day on which it is safe to perform the inspection. In addition, when a storm event of equal to or greater than 1.0 inch occurs outside of normal business hours, the self -inspection shall be performed upon the commencement of the next business day. Any time when inspections were delayed shall be noted in the Inspection Record. Frequency Inspect (during normal Inspection records must Include: business hours) (1) Rain gauge Daily Daily rainfall amounts. maintained in If no daily rain gauge observations are made during weekend or good working holiday periods, and no individual -day rainfall information is order available, record the cumulative rain measurement for those un- attended days (and this will determine if a site inspection is needed). Days on which no rainfall occurred shall be recorded as "zero." The permittee may use another rain -monitoring device approved by the Division. (2) E&SC At least once per 1. Identification of the measures inspected, Measures 7 calendar days 2. Date and time of the inspection, and within 24 3. Name of the person performingthe inspection, hours of a rain 4. Indication of whether the measures were operating event > 1.0 inch in properly, 24 hours 5. Description of maintenance needs for the measure, 6. Description, evidence, and date of corrective actions taken. (3) Stormwater At least once per 1. Identification of the discharge outfalls inspected, discharge 7 calendar days 2. Date and time of the inspection, outfalls (SDOs) and within 24 3. Name of the person performingthe inspection, hours of a rain 4. Evidence of indicators of stormwater pollution such as oil event> 1.0 inch in sheen, floating or suspended solids or discoloration, 24 hours S. Indication of visible sediment leaving the site, 6. Description, evidence, and date of corrective actions taken. (4) Perimeter of At least once per If visible sedimentation is found outside site limits, then a record site 7 calendar days of the following shall be made: and within 24 1. Actions taken to clean up or stabilize the sediment that has left hours of a rain the site limits, event > 1.0 inch in 2. Description, evidence, and date of corrective actions taken, and 24 hours 3. An explanation as to the actions taken to control future releases. (5) Streams or At least once per If the stream or wetland has increased visible sedimentation or a wetlands onsite 7 calendar days stream has visible increased turbidity from the construction or offsite and within 24 activity, then a record of the following shall be made: (where hours of a rain 1. Description, evidence and date of corrective actions taken, and accessible) event > 1.0 inch in 2. Records of the required reports to the appropriate Division 24 hours Regional Office per Part III, Section C, Item (2)(a) of this permit. (6) Ground After each phase 1. The phase of grading (installation of perimeter E&SC stabilization of grading measures, clearing and grubbing, installation of storm measures drainage facilities, completion of all land -disturbing activity, construction or redevelopment, permanent ground cover). 2. Documentation thatthe required ground stabilization measures have been provided within the required timeframe or an assurance that they will be provided as soon as possible. NOTE: The rain inspection resets the required 7 calendar day inspection requirement. PART III SELF -INSPECTION, RECORDKEEPING AND REPORTING SECTION B: RECORDKEEPING 1. E&SC Plan Documentation The approved E&SC plan as well as any approved deviation shall be kept on the site. The approved E&SC plan must be kept up-to-date throughout the coverage under this permit The following items pertaining to the E&SC plan shall be kept on site and available for inspection at all times during normal business hours. Item to Document Documentation Requirements (a) Each E&SC measure has been installed Initial and date each E&SC measure on a copy and does not significantly deviate from the of the approved E&SC plan or complete, date locations, dimensions and relative elevations and sign an inspection report that lists each shown on the approved E&SC plan. E&SC measure shown on the approved E&SC plan. This documentation is required upon the initial installation of the E&SC measures or if the E&SC measures are modified after initial installation. (b) A phase of grading has been completed. Initial and date a copy of the approved E&SC plan or complete, date and sign an inspection report to indicate completion of the construction phase. (c) Ground cover is located and installed Initial and date a copy of the approved E&SC in accordance with the approved E&SC plan or complete, date and sign an inspection plan. report to indicate compliance with approved ground cover specifications. (d) The maintenance and repair Complete, date and sign an inspection report. requirements for all E&SC measures have been performed. (e) Corrective actions have been taken Initial and date a copy of the approved E&SC to E&SC measures. plan or complete, date and sign an inspection report to indicate the completion of the corrective action. 2. Additional Documentation to be Kept on Site In addition to the E&SC plan documents above, the following items shall be kept on the site and available for inspectors at all times during normal business hours, unless the Division provides a site -specific exemption based on unique site conditions that make this requirement not practical: (a) This General Permit as well as the Certificate of Coverage, after it is received. (b) Records of inspections made during the previous twelve months. The permittee shall record the required observations on the Inspection Record Form provided by the Division or a similar inspection form that includes all the required elements. Use of electronically -available records in lieu of the required paper copies will be allowed if shown to provide equal access and utility as the hard -copy records. 3. Documentation to be Retained for Three Years All data used to complete the a-NOI and all inspection records shall be maintained for a period of three years after project completion and made available upon request. [40 CFR 122.41] PART II, SECTION G, ITEM (4) DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT Sediment basins and traps that receive runoff from drainage areas of one acre or more shall use outlet structures that withdraw water from the surface when these devices need to be drawn down for maintenance or close out unless this is infeasible. The circumstances in which it is not feasible to withdraw water from the surface shall be rare (for example, times with extended cold weather). Non -surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met: (a) The E&SC plan authority has been provided with documentation of the non -surface withdrawal and the specific time periods or conditions in which it will occur. The non -surface withdrawal shall not commence until the E&SC plan authority has approved these items, (b) The non -surface withdrawal has been reported as an anticipated bypass in accordance with Part III, Section C, Item (2)(c) and (d) of this permit, (c) Dewatering discharges are treated with controls to minimize discharges of pollutants from stormwater that is removed from the sediment basin. Examples of appropriate controls include properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems, (d) Vegetated, upland areas of the sites or a properly designed stone pad is used to the extent feasible at the outlet of the dewatering treatment devices described in Item (c) above, (e) Velocity dissipation devices such as check dams, sediment traps, and riprap are provided at the discharge points of all dewatering devices, and (f) Sediment removed from the dewatering treatment devices described in Item (c) above is disposed of in a manner that does not cause deposition of sediment into waters of the United States. PART III SELF -INSPECTION, RECORDKEEPING AND REPORTING SECTION C: REPORTING 1. Occurrences that Must be Reported Permittees shall report the following occurrences: (a) Visible sediment deposition in a stream or wetland. (b) Oil spills if: • They are 25 gallons or more, • They are less than 25 gallons but cannot be cleaned up within 24 hours, • They cause sheen on surface waters (regardless of volume), or • They are within 100 feet of surface waters (regardless of volume). (c) Releases of hazardous substances in excess of reportable quantities under Section 311 of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA (Ref: 40 CFR 302.4) or G.S. 143-215.85. (d) Anticipated bypasses and unanticipated bypasses. (e) Noncompliance with the conditions of this permit that may endanger health or the environment. 2. Reporting Timeframes and Other Requirements After a permittee becomes aware of an occurrence that must be reported, he shall contact the appropriate Division regional office within the timeframes and in accordance with the other requirements listed below. Occurrences outside normal business hours may also be reported to the Department's Environmental Emergency Center personnel at (800) 858-0368. Occurrence Reporting Timeframes (After Discovery) and Other Requirements (a) Visible sediment • Within24hours, an oral or electronic notification. deposition in a • Within7calendardays, a report that contains description of the stream or wetland sediment and actions taken to address the cause of the deposition. Division staff may waive the requirement for a written report on a case -by -case basis. • If the stream is named on the NC 303(d) list as impaired for sediment - related causes, the permittee may be required to perform additional monitoring, inspections or apply more stringent practices if staff determine that additional requirements are needed to assure compliance with the federal or state impaired -waters conditions. (b) Oil spills and • Within24hours, an oral or electronic notification. The notification release of shall include information about the date, time, nature, volume and hazardous location of the spill or release. substances per Item 1(b)-(c) above (c) Anticipated • A report at least ten days before the date of the bypass, if possible. bypasses [40 CFR The report shall include an evaluation of the anticipated quality and 122.41(m)(3)] effect of the bypass. (d) Unanticipated • Within24hours, an oral or electronic notification. bypasses [40 CFR • Within 7 calendardays, a report that includes an evaluation of the 122.41(m)(3)] quality and effect of the bypass. (e) Noncompliance • Within24hours, an oral or electronic notification. with the conditions • Within 7calendardays, a report that contains a description of the of this permit that noncompliance, and its causes; the period of noncompliance, may endanger including exact dates and times, and if the noncompliance has not health or the been corrected, the anticipated time noncompliance is expected to environment[40 continue; and steps taken or planned to reduce, eliminate, and CFR 122.41(I)(7)] prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6). • Division staff may waive the requirement for a written report on a case -by -case basis. NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING I EFFECTIVE: 04/01/19I