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Home My WebLink About20120638 Ver 1_More Info Received_20120824KE KELLER ENVIRONMENTAL ENVIRONMENTAL CONSULTANTS Ian McMillan NC Division of Water Quality 401 Wetlands WQ Certification Unit 1650 Mail Service Center Raleigh, North Carolina 27699 -1650 Re: Enviva Pellets Northampton Keller Environmental Job No. DWQ Project 12 -0638 Knightdale, North Carolina Dear Mr. McMillan: August 23, 2012 1204 0 AUG 9 4 2012 DENR - �yA Wedanda 8 cti.....R QU%u ITY Thank you for your, Lauren Witherspoon, and Annette Lucas' assistance with this project. We are submitting the additional information requested from written correspondence on July 27, 2012. We are requesting for NC Division of Water Quality (DWQ) written approval under Section 401. This will assist in compliance with Nationwide Permit (NWP) 39 and Water Quality Certification 3890. We have addressed your included written comments in the following paragraphs. 1. Provide evidence showing that this project meets all of the requirements for low density development found in Appendix A of GC3890. Please refer to the attached Plan Sheets and Low - Density Supplement. As seen in the Impervious Legend on Sheet G18, the overall impervious of the development is 22.1 %. Approximately 1.5 -miles of grass swales have been designed and constructed with 55% located on the northern, "eastern, & southern perimeter areas in recorded drainage easements. These low- sloped conveyances have been designed in accordance with the most recent version of NC DWQ Best Management Practices (BMP) Manual. The large perimeter buffer areas should also protect the neighboring upland and lowland areas. 2. Please provide plans that show a more detailed breakdown of impervious surfaces. Identify on these plans all impervious surface and pipes with labels. Please refer to the attached Plan Sheets G 17 and G 18. The drainage areas have been delineated and detailed in the "Delineated Areas" table in the lower left corner of Sheet G18. DWQ 401 Certification Re- Submittal Enviva Pellets Northampton August 23, 2012 Page 2 of 3 Nine (9) RCP Culverts have been designed and constructed primarily for driveway crossings. They will allow for proper vehicular and machinery flow to and within the production plant. All of the Drainage Pipes, except for Drainage Pipe D -02, drain to downstream grass swales. I conducted a site inspection this past Monday (August 20, 2012). The site received approximately 2- inches of rain the previous day and was in excellent condition, including the wetland areas. Below is a photograph of the PDD -01 drainage swale along the northern border. All of the constructed swales appeared to follow the designed parameters. Drainage Pipe D -02 and its dissipater pad also appeared to perform very well and protect the adjacent wetland area. _Western View of Drainage Swale PDD -01 with Culvert Outlet D -03 in lower half, Scale House (upper left), and Log Yards (background) The western logging yards will also utilize a "Transpirational Drying" process which utilizes best management practices. Unlike most logging yards which heavily irrigate their logs, this process does not irrigate. This will greatly reduce the runoff from the site and provide increased protection to the wetland and transitional areas. Secondly, it has been shown that it increases the energy content of the wood and reduces residual ashes during power production. DWQ 401 Certification Re- Submittal Enviva Pellets Northampton August 23, 2012 Page 3 of 3 Thank you, in advance, for allowing us to impact the small extension of the northwestern wetland area. The design team attempted to avoid the wetland area impacts during the initial planning stages before and after the recent property acquisition. Keeping this proposed layout is critical for plant efficiency and eliminating schedule delays. The surrounding community is very pleased with the many benefits that this plant is currently providing and for the for seeable future. This includes long -term stability since several years' worth,of pellets is alread, %der contract. If you should have.questions or require additional clarification please feel free to contact me at 749 -8259 (cell) or email: jayOkelIerenviron mental. com. Sincerely, Keller Environmental, LLC Jay Keller Principal Cc: Monte Moreschi, P.E., Mid -South Engineering Mike Walker, P.E., El Group Attachments: • July 27, 2012 DWQ Request for More Information letter • G17- Northampton Project Common Plant Systems Clearing /Dirtwork General Post Erosion Control Plan Sheet • G18- Northampton Project Common Plant Systems Clearing /Dirtwork General Drainage Delineation Plan Sheet • August 21, 2012 Low Density Supplement Beverly iFaves Perdue Nand Carolina F:nviv� Pellets Northampton, i LC Atti): Fort 11it1tz 7200 1'isco►tsin AVe`rlUe BethCt;da, NID 2M 14 Cf)arle.s eNaki,d, PI Director July 27, 2012 Sub elct Property, Friviva pe'llets'itioi-thampton Lees Creek (03021)8, 23-27-1, CJ I REQUEST FOR MORE INFORMATION Dee Freeman Secrelary DWQ 13r(*ct 4 12_()63$ Northampton County Dear 11r. !-lints,: on .tune 28, 201", the Division of Water Quality (DWQ) received your application dated .June ?.7.201? to fill or otherwise impact 0.06 acre of 404 wetlands (permanent impacts). 'rhe, DWQ has determined that your applications were �nconlplete and/or provided inaccurate information as discussed below. The DWQ will require additional inforfhation in order to process your application ,o impact streams and wetla tds on the subject property. This project is on hold and incomplete until vie receive the additional information requested below. 1f w -e do not receive the requested info►•rrtation. your project Will be formally returned as inQonlplete. Please provide the following infonnatton so that we play continue to review \,our project. ttcfaiAtionag Infortmation Requested- 3 ) 0/11 the plan, -t appears that pipes will be utilized on the site to corwcv storinwater. Per Condition 12 and Item (A)tv1)(tt) {b) `>f rlttac;hamit A of 6C 3890, Cora project to be considered lov, density it "must not include a 4t01,111water collection system Ouch as pilted ccmveyances) -. DWQ tides nett believe that this project meets the requi enlent, ft.tr love densitN development. Please either: 1 ' �\ id � 1'•e showing that this rulGct nlcets all of the re uiremcnts for tout density development found a. Pro \, � cR � � 1' .! q in Appendix A ofGC3890, avaitable at: http:!portal,n�ctc�rtr_c 'cici:.icwrietlt library/get ft_ lt? ttttitin9e7c74e6- 1036-44cf(f -b7Qf� Se93e?cff±flac grapJi °.38,364 or b. 1'rovide a `itortnwaler iVanagement l'[all th.1t ICntoves a minirnuIII of �5 percent TSS a] id 30 percent TN and TP (if it drains to a N'R4l) from the stormwater gencratxil by this proicet. For each proposed RNIP, ,please i One i Vi�rthC'�troli na ;/V ttrall NGrth �a mina div so ^ a L`la'er Q<<al;ty Ralegh Rey;onal 0-t ca Suttace'Nater Protection Phone (919) 791-420C Customer Seri ce ;rtnrnellt ,PNw ncwatercuaitty org 628 Mal' SP Vl ce Center Rxeigh, NC 27,99 -1628 FAX (919) 7PB- 7159 877 6'23.03748 An Equal npportunrtyrAtf rmatwe Action ', --mployer - 50% Recycled; t0'„ Post Constuner Paper pavc 2; '0 P ir top "A at lolp aw pwk idc 1) la,, I&, 110ti,vtow, "m i tcc aild pipcs \\ oh i;ihvi, PICase; suhmil fpqr ;ypqy of ON inwriation " Wn 10 cAndar daV s 01 tilt; WQ A AN lev" PICase serld I -�jj Harem I!Qghn. 1650 Mad Ser-�ice (ewer, Raleigh. adilkhmal inf riviation tO MW Cent' '-0 of O)c Jitle 011" NC 2,699-1650, it we do fio, receivo 'lliS j,j " 10 nee w) -"p a\ "vp A nu" Aniummil And I WN W-, etter onk iiddre,�sc, thw 'Ipplicalloo pj-,,teq1te,j butte . rs Pleam: be a, \N- al C thal 111� 1111pWtt I•(ILW`4Qd " 111101 wthcr1/"-.-d 611 C) ihv the I'le"ise Call Laurel) withcr,pw at TOMMY! lr%"u law wn Ou"I"m rquitAmp 0", cut, thin mancr It'ller or vvouid hlkc to 'el up a meeliog, to dis 1050 Mail ',c1-v1k:0 I Wny %nok R1} {t: I Permit No. (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM LOW DENSITY SUPPLEMENT This form may be photocopied for use as an original A low density project is one that meets the appropriate criteria for built upon area and transports stormwater runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be found in Session Law 2008 -211, 15A NCAC 2H .1000, Session Law 2006 -246, and the DWQ BMP Manual. Curb and gutter systems are allowed provided they meet the requirements in 15A NCAC 2H .1008(g). I. PROJECT INFORMATION Project Name : Enviva Pellets Northampton, LLC Contact Person: Roland Burnett Phone Number: ( 910 )318 -2742 Number of Lots:l Allowable Built Upon Area (BUA) Per Lot *:NA Number of Dwelling Units Per Acre * *:NA Low Density Development (check one): ® without curb & gutter ❑ with curb & gutter, outlets to (check one): ❑ Swales ❑ Vegetated Area *If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area for each lot. The attachment must include the project name, phase, page numbers and provide area subtotals and totals. BUA shall be shown in units of square feet. * *(Phase II Post - Construction (non -SA) only) II. BUILT UPON AREA Refer to DWQ's forms and applications website for specific language that must be recorded in the deed restrictions for all subdivided projects. ( http:// h2o. enr .state.nc.us /su/bmp_forms.htm) Complete the following calculation in the space provided below where: • SA Site Area - the total project area above Mean High Water. • DF Density Factor - the appropriate percent built upon area divided by 100. • RA Road Area - the total impervious surface occupied by roadways. • OA Other Area - the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc. • No. of Lots - the total number of lots in the subdivision. • BUA per Lot - the computed allowable built upon area for each lot including driveways and impervious surfaces located between the front lot line and the edge of pavement. • Total allowable lot BUA - the computed allowable built upon area for all lots combined. • Total BUA from lot listing - the sum of built upon area allocated for each lot on the list of non - uniform lots. Calculation: Form SW401 -Low Density-Rev. 3 -2/10/09 Page 1 of 4 For uniform lot sizes: (SA: ft2 x DF: ) - (RA: _ ft2) (OA: ft2) = BUA per Lot = ft2 (No of Lots: ) For non - uniform lot sizes: a. (SA: ft2 x DF: _.) -- (RA: ftZ) - (OA: ft2) = Total allowable lot BUA = ft2 b. Total BUA from lot listing: sf. b must be < a III. DESIGN INFORMATION Complete the following table. ]f additional space is needed the information should be provided in the same format as Table 1 and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State of North Carolina Erosion and Sediment Control Planning and Design Manual or at http : / /hdsc.nws.noaa.gov /hdsc /pfds/ Table 1. Swale deSiLyn information based on the 10 -vear storm_ Swale No. Drainage Area (ac) Impervious Area (ac) Grassed Area (ac) C Q (cfs) Slope N Vallow (f ps) Vactual (fps) Flow Depth (ft) 1 26.91 10.87 16.04 0.54 104.92 0.47 4.5 3.98 2.75 2 0.65 0.14 0.79 0.48 2.25 0.78 4.5 1.31 0.34 3 7.50 3.22 4.28 0.55 29.78 1 2.87 4.5 3.31 0.36 4 1.99 1.29 0.70 0.73 10.49 1.14 4.5 2.40 0.57 5 6.30 4.13 2.17 0.73 33.20 0.39 4.5 2.73 1.62 6 14.35 6.62 7.73 0.58 60.09 0.48 4.5 3.55 2.32 7 2.39 1.25 1.14 0.63 10.87 1.54 4.5 2.67 0.51 8 0.82 0.22 0.60 0.43 2.55 0.93 4.5 1.40 0.31 9 0.25 0.16 0.09 0.72 1.30 2.63 4.5 1.51 0.17 10 0.29 0.14 0.15 0.60 1.26 4.79 4.5 1.68 0.12 11 0.53 0.29 0.24 0.65 2.49 0.99 4.5 1.41 0.30 12 0.59 0.064 0.53 0.31 1.32 1.21 4.5 1.10 0.17 13 0.05 0.004 0.054 0.32 0.12 5.45 4.5 0.68 0.03 14 4.34 1.96 2.38 0.57 17.86 0.92 4.5 2.86 0.86 15 2.43 1.56 0.87 0.72 12.63 1.55 4.5 2.64 0.48 16 0.36 0.13 0.23 0.50 1.30 3.28 4.5 1.50 0.13 17 0.77 0.20 0.57 0.42 2.33 1.52 4.5 1.45 0.21 18 1.08 0.44 0.64 0.54 4.21 0.54 4.5 1.47 0.55 19 1 1.11 0.44 0.67 0.53 4.25 0.60 4.5 1.49 1 0.51 20 1 6.87 2.89 3.98 0.55 1 27.28 1 1.23 4.5 3.75 1 1.12 IV. REQUIRED ITEMS CHECKLIST Fomi SW401 -Low Density- Rev.3- 2/10/09 Page 2 of 4 The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A NCAC 2H.1000, NCDENR BMP Manual (2007), Session Law 2006 -246, and Session Law 2008 -211. Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate that the following requirements have been met and supporting documentation is provided as necessary. If the applicant has designated an agent on the Stormwater Management Permit Application Form, the agent may initial below. If any item is not met, then justification must be attached. Only complete items n through p for projects with curb outlets. Page /Plan Initials Sheet No. NA a. t For projects in the 20 coastal counties: Per NCAC 2H.1005, a 50 foot wide vegetative buffer is provided adjacent to surface waters. For Redevelopment projects, a 30' wide vegetative buffer adjacent surface waters is provided. NA b. t For HQW or ORW projects outside the 20 coastal counties: A 30 foot wide vegetative buffer is provided adjacent to surface waters. G18 c. tFor Phase II Post - Construction projects: All built upon area is located at least 30 feet landward of all perennial and intermittent surface waters. NA d.' Deed restriction language as required on form SWU -101 shall be recorded as a restrictive covenant. A copy of the recorded document shall be provided to DWQ within 30 days of platting and prior to the sale of any lots. G18 e. Built upon area calculations are provided for the overall project and all lots. G18 f. Project conforms to low density requirements within the ORW AEC. (if applicable per 15A NCAC 2H .1007) G18 g. Side slopes of swales are no steeper than 3:1; or no steeper than 5:1. for curb outlet swales. Attached h. Longitudinal slope of swales is no greater than 5 %;,for non -curb outlet projects, calculations for shear stress and velocity are provided if slope is greater than 5 %. i� G18 i. At a minimum, swales are designed to carry the 10 year storm velocity at a non - erosive rate. G18 j. Swales discharging to wetlands are designed to flow into and through the wetlands at a non - erosive velocity (for this flow requirement into wetlands, non - erosive is velocity < 2 ft /s). G18 -G10 k. Swale detail and permanent vegetation is specified on the plans. G18 -G10 1. Swale detail provided on plans; includes grass type(s) for permanent vegetative cover. /yI G18 m. Swales are located in recorded drainage easements. NA n.t Length of swale or vegetated area is at least 100 feet for each curb outlet. G18 o."t The system takes into account the run -off at ultimate built -out potential from all surfaces draining to the system (delineate drainage area for each swale). NA p.t' Curb outlets direct flow to a swale or vegetated area. t Projects in the Neuse, Tar - Pamlico, Catawba River basins, and Randleman Lake may require additional buffers. tt Only complete these items for projects with curb outlets. Form SW401 -Low Density -Rev3- 2/10/09 Page 3 of 4 V. SWALE SYSTEM MAINTENANCE REQUIREMENTS 1. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches at any time; and grass will not be mowed too close to the ground or "scalped ". 2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build -up, erosion, and trash accumulation. 3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded following sediment removal. 4. Eroded areas of the Swales will be repaired and reseeded. Swales will be revegetated as needed and in a timely manner based on the monthly inspections. Side slopes must be maintained at the permitted slope. 5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every significant runoffproducing rainfall event. "Trash and debris will be cleared away from grates, curb cuts, velocity reduction devices and piping. 6. Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality. I acknowledge and agree by my signature below that I am responsible for the performance of the six maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print Name and Title:Roland Burnett, Plant Manager Address:874 Lebanon Church Road, Gar sag NC 27831 Phone: 910- 318-.27J3 _ Date:$ Signature: Note: The legally responsible parry should not be a homeowners association un less nio) e than 50% of the lots have been sold and a resident of the subdivision has been named the president 1, (fresa_ S_�OYt1S a Notary Public for the State of lvC County of Y a l r o - do hereby cert►fy that I \O vl �2. j Ct r y1 �f �, r personally appeared before me this _ n ao +� day of �(s� YiUC' ASH and acknowledge the due execution of the forgoing swale maintenance requirements Witness my hand and official seal, .- 4,tMa_,& Notary signature "SEAL My commission expires 0 - 14- 1 D_ Form SW401 -Low Density- Rev.3- 2/10,/09 Page 4 of 4 0 Im ill LIME: BASED ON SOIL TEST OR 2 TONS /ACRE FERTILIZER: BASED ON SOIL TEST OR 1000 LBS /ACRE OF 5 -10 -10 FERTILIZER SEEDING MIXTURE: SEED TYPES: SEEDING RATES: SITE AREA DESCRIPTION (POUNDS /ACRE): TALL FESCUE 200 -250 RYE GRAIN 40 KOREAN LESPEDEZA 20 TEMPORARY SEEDING: LIME: 1 TON /ACRE FERTILIZER: 1000 LBS /ACRE OF 10 -10 -10 FERTILIZER (RYE ONLY) 750 LBS /ACRE OF 10 -10 -10 FERTILIZER K, SEED TYPES: SEEDING DATES: SEEDING RATES: (FOUNDS /ACRE): RYE GRAIN AUG 16 TO APRIL 30 120 KOREAN LESPEDEZA AUG 16 TO APRIL 30 40 RYE GRAIN MAY 1 TO AUG 15 120 GERMAN MILLET MAY 1 TO AUG 15 40 MULCH AND MATTING: TYPE AND RATE OF MULCH: CLEAN STRAW AT 2 TONS /ACRE METHOD OF ANCHORING: ANCHORED WITH TACKING AGENT APPROVED BY CONTRACTOR. TYPE OF MATTING: MATTING SHALL BE HEAVY TWISTED JUTE MESH. OPENING BETWEEN STRANDS SHALL BE APPROXIM: =TELY 1" SQUARE. GENERAL SEEDING MOTES: 1. IF WORK IN DISTURBED AREAS STOPS FOR MORE THAN THE WORKING DAYS PER DWQ TIME TABLE, TEMPORARY SEEDING SHALL BE APPLIED TO STABILIZE THE AREA. SEE GROUND STABILIZATION SCHEDULE CHART THIS SHEET. 2. TILL OR DISC THE PREPARED AREAS TO BE SEEDED TO A MINIMUM DEPTH OF FOUR (4) INCHES. REMOVE ALL STONES LARGI R THAN THREE (3) INCHES ON ANY SIDE, STICKS, ROOTS, AND OTHER EXTRANEOUS MATERIALS AT THE SURFACE DURING THE BED PREPARATION. 3. RECOMPACT THE AREA USING A CULTIPACKER ROLLER. THE FINISHED GRADE SHALL BE A SMOOTH, EVEN SOIL SURFACE WITH A LOOSE, UNIFORMLY FINE TEXTURE. ALL RIDGES AND DEPRESSIONS SHALL BE REMOVED AND FILLED TO PROVIDE THE APPROVED SURFACE DRAINAGE. SEEDING OF GRADED AREAS IS TO BE DONE IMMEDIATELY AFTER FINISHED GRADES ARE OBTAINED AND SEEDBED PREPARATION IS COMPLETED. GROUND STABILIZATION SCHEDULE CHART 1. GROUND STABILIZATION SITE AREA DESCRIPTION STABILIZATION TIME FRAME `TABILIZATION TIME FRAME EXTENSIONS PERIMETER DIKES, SWALES, DITCHES AND SLOPES 7 DAYS NONE HIGH QUALITY WATER (HOW) ZONES 7 DAYS NONE SLOPES STEEPER THAN 3:1 7 DAYS IF SLOPES ARE 10' OR LESS IN LENGTH AHD ARE NOT STEEPER THAN 2:1, 14 DAYS ARE ALLOWED SLOPES 3:1 OR FLATTER 14 DAYS 7 DAYS FOR SLOPES GREATER THAN 50 FEET IN LENGTH ALL OTHER AREAS WITH SLOPES FLATTER THAN 4:1 14 DAYS NOME (EXCEPT FOR PERIMETERS AND HOW ZONES) * "EXTENSIONS OF TIME MAY BE APPROVED BY THE PERMITTING AUTHORITY BASED ON WEATHER OR OTHER SITE — SPECIFIC CONDITIONS THAT MAKE COMPLIANCE IMPRACTICABLE." (SECTION 111.8(2)(b)) 2. BUILDING WASTES HANDLING NO PAINT OR LIQUID WASTES IN STREAM OR STORM DRAINS DEDICATED AREAS FOR DEMOLITION, CONSTRUCTION AND OTHER WASTES MUST BE LOCATED O' FROM STORM DRAINS AND STREAMS UNLESS NO REASONABLE ALTERNATIVES AVAILABLE. EARTHEN— MATERIAL STOCKPILES MUST BE LOCATED 50' FROM STORM DRAINS AND STREAMS 'UNLESS NO REASONABLE ALTERNATIVES AVAILABLE. CONCRETE MATERIALS MUST BE CONTROLLED TO AVOID CONTACT WITH SURFACE WATERS, WETiLANDS, OR BUFFERS. 3. DISCHARGES TO FEDERALLY- LISTED WATERS REQUIREMENTS ARE THE SAME AS IN PERVIOUS PERMIT. THE PERMIT ALLOWS REDUCTION FROM THE 20 ACRE MINIMUM IF THE DIRECTOR OF DWQ DET=ERMINES THAT OTHER BMPs PROVIDE EQUIVALENT PROTECTION. SEEDING AND MULCHING DETAIL � SEE CONSTRUCTION DRAWINGS FOR LOCATIONS NO SCALE 19 SILT FENCE 1' SEDIMENT CONTROL STONE FLOW I � 2 I STRUCTURAL STONE 3' MAX 111 CROSS SECTION 2' MIN TOP VEY SILT FENCE SILT FENCE FRONT VIES,)! NOTE: STRUCTURAL STONE SHALL BE (CLASS "B ") STONE FORE EROSION CONTROL PURPOSES. SEDIMENT CONTROL STONE SHALL BE NO. 5 OR NO. 57 STONE. SILT FENCE STONE OUTLET DETAIL SEE CONSTRUCTION DRAWINGS FOR LOCATIONS NO SCALE ON 0 EXCELSIOR MAT 2" OVERLAP AT SEAMS STAr-LF-,3 L V.U. BOTH DIRECTIONS 7 C, 1. CLEAR THE ENTRANCE AND EXIT AREA OF ALL VEGETATION, ROOTS, AND OTHER OBJECTIONABLE MATERIAL AND GRADE PROPERLY. 2. PLACE FILTER FABRIC OVER CLEARED AREA. 3. PLACE WASH STONE TO THE SPECIFIC GRADE AND DIMENSIONS SHOWN ON THE PLANS AND SMOOTH IT. 4. PROVIDE DRAINAGE TO CA,,RRY WATER TO A SUITABLE OUTLET. NOTES 1. COARSE AGGREGATE: 2 -3 INCH WASHED STONE 2. MINIMUM THICKNESS: 6 IN's "HES 3. MINIMUM LENGTH: 100 FEET 4. MINIMUM WIDTH: 25 FEET 5. GEOTEXTILE: REQUIRED TO SEPARATE COARSE AGGREGATE FROM 6. MAINTAIN TO PREVENT TRA',,NSPORT OF SEDIMENT ONTO PUBLIC RC PLACE ADDITIONAL COARSE AGGREGATE AS CONDITIONS DEMAND. 0, (MIN.) _INING )EPTH NJ RIPRAP SIZE AND THICKNESS VARIES 3 SEE CHART BELOW >oo AX.�1 _ o NON GEOSYNTHTIC FILTER FABRIC . 0 (MIN.) NOTE: CLASS A RIP RAP SHALL BE 18" THICK. CLASS B RIP RAP SHALL BE 23" THICK. CLASS I RIP RAP SHALL BE 24" THICK. CLASS II RIP RAP SHALL BE 27" THICK. IV V 1 C: OVERLAP SHALL BE 2 MIN. AND BE LAID WITH OVERLAP OCCURRING ON THE DOWN SLOPE. "E AT" S ALES S ALE DETAILS SEE CONSTRUCTION DRAWINGS FOR LOCATIONS NO SCALE MAINTENANCE NOT: 1. MAINTAIN THE STONE PAD IN A CONDITION TO PREVENT MUD OR SEDIMENT FROM LEAVING THE CONSTRUCTION SITE. THIS MAY REQUIRE PERIODIC TOPDRESSING WITH 2 —INCH STONE. 2. AFTER EACH RAINFALL, INSPECT ANY STRUCTURE USED TO TRAP SEDIMENT AND CLEAN IT OUT AS NECESSARY. 3. IMMEDIATELY REMOVE ALL OBJECTIONABLE MATERIALS SPILLED, WASHED, OR TRACKED ONTO PUBLIC ROADWAYS. 1I�t� TEMPORARY CONSTRUCTION ENTRANCE DETAIL SEE CONSTRUCTION DRAWINGS FOR LOCATIONS NO SCALE 10 11 REFERENCE DRAWINGS DRAWING NO. REV TITLE LINING DEPTH G 08/22/12 ISSUED FOR PERMIT LRA MJM MJM F 02/20/12 ISSUED FOR PERMIT RDM RLM RLM E 02/06/12 ISSUED FOR PERMIT REVIEW MJM MJM MJM D 02/03/12 ISSUED FOR BID MJM MJM MJM C 02/02/12 REVISED PER NCDENR COMMENTS RDM RLM RLM B 01/31/12 ISSUED FOR PERMIT REVIEW RDM RLM RLM A 1/6/12 ISSUE FOR BID RDM RLM RLM NO. DATE REVISIONS DWN Cl APPD SEALS e, d 2 0543 h a V0 nd G6Lk9 o� 0 I 13 F 4C/C MID —SOUTH Engineering Co. 1658 Malvern Ave.— P.O. Box 1399 Im Hot Springs, Arkansas 71901 ISM1149 Executive Circle Cary, North Carolina 27511 MS DRAWING NO. 5 8 7 4 — 1 6 O O O — V I O G THIS DOCUMENT IS THE CONFIDENTIAL PROPERTY OF ENVIVA LP (ENVIVA). THE DOCUMENT AND ITS CONTENTS SHALL NOT BE DISTRIBUTED, COPIED, REPRODUCED OR DISCLOSED TO OTHERS WITHOUT THE WRITTEN APPROVAL OF ENVIVA... DRAWN BY DATE CHECKED BY DATE RDM 1/6/12 RLM 1/6/12 DESIGNED BY DATE APPROVED BY DATE RLM 1/6/12 RLM 1/6/12 ENVIVA PELLETS NORTHAMPTON, LLC GARYS U RG, C NORTHAMTON PROJECT COMMON PLANT SYSTEMS CO CLEARING /DIRT WORK GENERAL SEDIMENT & EROSION CO T. T' SCALE DRAWING N0. REV. N ®TES G SAVED: 08/14/12 8:24 AM PLOTTED: 08/23/2012 3:25 PM USERNAME: lallen FILENAME: 16000G10.dwg _ OFFICE & ADMINISTRATION BUILDING ! / I ' ' I f I i \ ' , , / I DRAWING NO. REV TITLE I [111' N; - ' /___ I 11 � PELLET MILL FED SILO N: 1900-- -- - . '. / --- '---//- - I . ,'\ - / - I- - - _'�__ _____ TD-081 1/1 I / Ltj � - ____ ,//,,- '; R E 1 j - �m I/ , _ 1 / SB , "? 'Cv - - - '/� li -\ I - 1� '�_ - , \ I/ - - I "I "I , 0 MAINTENANCE BUILDING , , V ' / 4 I , � ,,, I i - - - -_ --- _ -6 11, Q) I ) I I '�' / /-/// , -_ --- / \ -_ (gx - -_ -_ -------- ___ ----I--- -1 I __ _ _ _ I _ ' ____ PDD-07 // % __� / �� -, t'<��- \1 -1 ------ I - -_ ______ _1 - CENTRAL SERVICES BUILDING N: 1800- -- 11 11/8" I - -Y - 1111-1 / V - f" , 0 -'_::' 11 ]" ; I i I I I - :7) \11 _"' " i 0 HAMMERMILLS I I //[' / & i 11 \'11-1 i I i I _ , . N �� 1 " / 11 A��' / T ---155--- y i , / I PDD-03 a : , , '. ' i / // � \\\-, �� I "I 1 _7�� / 56-_�__'_�S_l - � , "', ",", I v "'I",\ CONSTRU L, 1- / �� '/1 " --- f I � '."' " I / , I I -- I i ! I i ,5,5 PD1 1 2. CONTACT NCDENR AT LEAST 48 HOURS PRIOR TO CONSTRUCTION. THAD , I \ IPDD-20 �56x--__________) 1 � � i ; I "I, 11 (* a / / ; I i - /// 1�11 il I ! i - - / "" I C3 4. INSTALL CONSTRUCTION ENTRANCE AS REQUIRED AND AS SHOWN ON APPROVED a \'/ / , ITDD-24 �,% \ I I Z _15\1 L-ul--LLj.j I I I I I I I "I . " -0 '; OUTLETS AS SHOWN ON PLANS. ONLY DISTURB AREA NEEDED TO INSTALL SILT a j I ' i / , /I � c IRD- i FENCE IN AREAS HATCHED TO HAVE AN USACOE JURISDICTIONAL DETERMINATION, CHIP STORAGE \ "' \ ,/ ,/ - PDD " SILT FENCE TO BE INSTALLED WITH NO MECHANICAL DISTURBANCE. NO REMOVAL OF a I x I §_ __1 - . , 0 100, 200' 6. INSTALL AND CONSTRUCT SEDIMENT BASINS AS SHOWN ON APPROVED PLAN. Q0 / A "; I / I , i - - � STABILIZE BASIN UPON CONSTRUCTION. SEDIMENT BASINS #1 AND #4 ONLY TO BE I i � ! i INSTALLED AT THIS TIME. SEDIMENT BASINS #2 AND #3 SHALL NOT BE INSTALLED I I '", ' Z ir � ' i --- ! I \'// //,/ / i T 7. INSTALL PERMANENT AND TEMPORARY DIVERSION DITCHES W/ CHECK DAMS TO , / I ; t p I / I 'OR SCHEDULE ALLOW FOR SEDIMENT LADEN RUNOFF TO ENTER BASINS. LINE DITCHES TO STABILIZE a 'I" \�/" I, , r T I 11 , I __j \_� � I 1�'/ ! ,\/ RIP RAP DISSIPA i ! ' ' ' p � / ; I I ___m F - ; 'I X / / I "' , , I I I I I / x \-, / "/ / I AS REQUIRED. ONLY CONSTRUCT DIVERSIONS AND DITCHES THAT FLOW INTO I , / "71 .' - - "" 7____ __ N: 1400 - -- ---- bi -- --, ! � i I I I DISSIPATOR OUTLET LENGTH 'M IH THICKNESS STONE D50 SEDIMENT BASINS #1 AND #4. aREAS THAT DO NOT DRAIN TO SEDIMENT BASINS #1 0 11 11 'I'll I _____Q t ' t " / 1 "I Lij , 1 8. CALL FOR ON-SITE INSPECTION BY NCDENR TO OBTAIN CERTIFICATE OF 0 1 1 I �' � i- 156- - ! ' i ! � ! 2 1 - 9. PROCEED WITH CLEARING AND GRUBBING FOR FUTURE SITE CONSTRUCTION. FOR 11 I . -5 � : 1 � : !I,ro I - 11 - I'/ I- , "/_� ADHERE TO ITS REQUIREMENTS. ONLY CLEAR AND GRUB AREAS THAT DRAIN TO IS , I / i ; ! I I . , / I , 11, I � / � , , I , I I " 10. STRIP TOPSOIL AS REQUIRED TO OBTAIN SUITABLE SUBGRADE. STOCKPILE I/ ' 1, / /\"' RD-07 D07/HW-13 11' 12.5' 0.9' CLASS B 5" TOPSOIL ON SITE AS SHOWN ON PLAN. ONLY STRIP AREAS THAT DRAIN TO i i 1 I --LOC--LOC-LC -.C--LOC I I I I t RD-09 - " 4, '/>� 11. BEGIN SITE GRADING AS SHOWN ON PLANS. MAINTAIN DIVERSION DITCHES DURING I I I : \ � / '�"_� N I I I i I I I I 1P D-1 ! � '/ 'I � / . I I' / // i - - 12. CLEAN SEDIMENT TRAPS WHEN HALF-FULL AND CHECK. FOR MAINTENANCE OF j! / - I I'D 9 0 11 " \' x /"\ " \ .0 . - - ALL EROSION CONTROL DEVICES WEEKLY OR AFTER EVERY "' OF RAIN EVENT. I ;1 / I I : ! � 3 ! 13. SEED AND MULCH DENUDED AREAS PER DWQ TIMETABLE FOR \'/"' �4 '/ 11 'I-," - i I ____ ____ _. _ __ / I � PDD-17 ':' " " " 11 ", I 11 I I i I I ' ID SIZE & TYPE LENGTH SLOPE INVERT DIN INVERT UP , V) - , -AREA -:- I � 1), ' I j / 11 / 15.CALL FOR AN ONSITE MEETING TO OBTAIN APPROVAL FOR REMOVAL OF D / , , j - 1 - / 0 / ", _x 'N I f , 1� 1\ 1 I/ D01 18" RCP 2,69% INV = 146.50 (HW-1) INV = 150.00 (HW-2) TEMPORARY EROSION CONTROL MEASURES, STABILIZE THESE AREAS AND INSTALL i " ; . I ; / I . ; i L I f \ // D02 18" RCP 68' 5.22% -, -4) 16. REQUEST FINAL APPROVAL BY NCDENR - CERTIFICATE OF COMPLETION. -.---N: 1000 - __ _ .... __ ______ "- I \_;'/_.' -, , " I _ - ____ ___ ___ --------- ____ ___ - 1- ij / I ___ ' __ __ ___ - ____ __ --------- ----.-.- - --- I-.--- ------- I --- ______ I - - - --- I ------ -_ - ,- _____ I -- ____ ------1 / -- HUD 04], - --- ---- - c i I ! 11: D 00 : I I / , 4 f SEE EROSION CONTROL DETAIL SHEET FOR INFORMATION AND DETAILS ON EROSION i _�__ I , "" ,li: I ITDD-24k---L ! i I . i i // \,,,/ '� DEVICES, SEEDING SCHEDULE, SEEDBED PREPARATION, AND ADDITIONAL _ __ - , ____ I ' - / > I , / '_ // ... -LX- ___ -L1X-L0C-LW-] - - :' --- i,/ / I _'/ , I / : i I TD D - 2: 1 1 70 i, ! - I i I I I - - I , , i F ( * I ! i e " ! / , /" " "/, I I, / ! i 1 , 9 I _ 5 /I 19.0 /\1 I " E 1 �, /11I I __\ / """ /1' / \ __ x -/ 0) /\, / , /" '>� i I - r. 11- / Z "'</ I/ I- 1. I /� I ; i / I i SEE SEDIMENT BASIN DETAIL SHEET FOR DETAILS. ., I , �11 I ----,--,. __ - - ------- __ I— _______ _ _ 1 - ____ ------ __ . / _ I _____ _ L___. - - -1 ------- - ____ 75 11-1- 11 ' \ �_ '_'z ------- / - - - - i I '/ " 1 : _,ael �_ __ , , '_ I I 11� I/ :� ",-,' \ // -1 I ' \' /'\ i i I STABILIZE SEDIMENT BASIN, SIDE SLOPES, DAM, AND AREA BELOW DAM AND SPILLWAY UPON CONSTR,JCTI,ON OF BASIN. A 08/22/12 ISSUED FOR PERMIT CMH MJM mim ; 17 - ! (" I : �� I I I I i I ! - ) ! _1 I 'I,- -I' I I USE EITHER SEED, MULCH, AND ANCHOR OR SEED, LINE, WITH / I I ; I ! I i ; i I ! .' I \ 11 I ___ -- -N: 400 �� I L-� ' 1 , '_ '\' - I : i i / i ! . I __ I t / ; I I /' 1 'p : <) I � / 1 : SF - Ej il Li / I ,;, I r / I - / i " � lux i : i i �� ' ;'A '\ " co i /x \/� I �T , HW-2 -, i /" \\ I / '/ I " 'x, \ I , 1, I I , � __- -�-- ___ - � 1DO- --- --- - '\ . " 11 --- � _ 1, _il I I i I [�� \ i __v_ \\\\ �v - ______ i / / /: //\ | i \' / <':�x _ 1 4 "'I'L - / �� I � i i � / | i / | � / � �� | � / ' / �� ' -� �- -- -�� N� O- -7�' --- --- --- --- --' | | / | | | i | | 'z | | / | i | c� / ' / ' / � �� / �� ()~�~�~�-�-' ST�8UZA�ON SCHEDULE: `~' `'| 77 i � } | | / ' [�[l 1� _J [ SEE D[TAL SHEETS FOR |NFOR��0N ON THE | ! | | | � | /�u-- /� 1 REQUIRED D00 GROUND STA8UZ��0N ��E TABLE . . / N ��l7'7�^ =" -- N� -1UO �� -- -- --- � --- �� - � - / -- - - ��` N/�- �� - SCHEDULE THAT SHALL BE ADHERED T0 FOR THE | | | | | � | | '/oi{U3 | | CONSTRUCTION OF THIS PROJECT. SEE COVER | � | | i / � � | | � ! SHEET FOR INFORMATION NOTIFICATION Of LAND . . . / / / / . ' / ^» 7- RESOURCE SEDIMENT AND EROSION CONTROL �� | | | | � � ' � � | | ! ,� / / ,� ��.�2.7� / c� SELF-|NSPECOON PR0�R�� | | � � � � / � � � � � � � � / � � ~^ � � 44� o�' � / � _ RAP PROTECTION __ TABLE ° CN � � � � � �� ~ / `_ .' . � '" o/ ~' �`� U ~ INLET _ N: -200 L . �j LJj L�j I". i L�j I *' i w clj cli w . I I Gj w w cli 1 cwJ I w (SEE SHEET 16000-G16 FOR INSTALLATION) SB# MPORARY SEDIMENT BASIN If 12111 a i ! I I I I. I :L1 SAVED: 2 3:13 PM PLOTTED: 2 3:35 PM USERNNWE: |o||en FILENAME: 1800OS17.dwg SWALE FLOW VELOCITY LINER PDD-02 1.40 PDD-03 3.35 EXCEL PP5-8 PDD-04 2,17 EXCEL PP5-8 PDD-05 2.46 EXCEL PP5-8 PDD-06 3.52 EXCEL PP5-8 PDD-07 2.56 EXCEL PP5-8 PDD-08 1.56 PDD-09 1.37 PDD-10 1.64 PDD-11 1.33 PDD-13 0.86 PDD-16 1.57 PDD-17 1.63 PDD-18 1.50 PDD-19 1.53 PDD-20 3.80 EXCEL PP5-8 TDD-21 2.81 EXCEL PP5-8 TDD-22 3.00 EXCEL PP5-8 TDD-23 4.30 EXCEL PP5-8 TDD-24 5.58 EXCEL PP5-8 i 3.39 EXCEL PP5-8 ° CN � � � � � �� ~ / `_ .' . � '" o/ ~' �`� U ~ INLET _ N: -200 L . �j LJj L�j I". i L�j I *' i w clj cli w . I I Gj w w cli 1 cwJ I w (SEE SHEET 16000-G16 FOR INSTALLATION) SB# MPORARY SEDIMENT BASIN If 12111 a i ! I I I I. I :L1 SAVED: 2 3:13 PM PLOTTED: 2 3:35 PM USERNNWE: |o||en FILENAME: 1800OS17.dwg 1 2 3 5 6 1 7 8 9 1.1 1 VARIABLE WIDTH �, 50' RD 06 ` 50' 11 PDD -01 10 YEAR ! I I PERMANENT DRAINAGE EASEMENT ! i RD -05 r 60 I t �- I r i 11 4 1 404 RIPARIAN � � 1 PDD -01I ___. s _____ ___- ___.__- 3.0..'_ _- -- f' ._ 1 155 �b AVERAGE DEPTH =4' N: 2dd0 - - - - -- - - -- - _. -- - - n - - 151,4.. _ - - -- 1 ''� RD -02 WETLANDS �_ x -1 Fk. HW 11 2( MAX. 1 I r 3 gr --150 �6�y 66 �r EXCELSIOR MAT 2" 3 PDD -Ol II �6�� yQ OVERLAP AT SEAMS -1, 1 - yes =-' 4 _r D -03 : �.. �° % R 1 148, DA #08 D �s, AVERAGE PINCH WIDTH =6.60' ' ' I 1 _- 30 : ��o HW -5 a -' o DA # 10 R 20' 11 I _. _ ___ . , nn _._ STAPLES 2 D.C. _ 0 _ - -- _ , ® -- - -:., - -- 153......-- •�-.-'" _ _.... ,, -_ 0.29 AC ,_ . .. , ._�,. •> ;..• _ S - - -., _ ~. 5 � � - NOTE. PREPARE, SEED, AND INSTALL SOIL EROSION CONTROL N. I5v0 / - -- r ; ® _ D05 : ' `S PDD -08 15 , BOTH DIRECTIONS h - ® .; PDD -10 " , 154 O . DISTURBED AREA OF DITCH. � _:- _ - :; -t.: , ..;. ,_, ._-------- -"�"`, _-- -'"""�� DA #16 � , - �„�"'r' , BLANKET ON s (: a, , 0 D02 147' ,146 5 ::, L "i I 0.36 AC SCA ` t 5 ' qq 1 -0 - . -= 15 ,i, <• . ,,, • ; ' 155 1 - f - ,• < _ :;. • n :,..... N.T.S. 151 . I . _.., 51 , SCALE w • ... , ... 1 _ ,, . ., .. i .i 4 - .� .,, .. : -F, .. .,., -.:. ,:�...:. - , _ 3• 4 . r "... POD 19 ;. , PDD 02 DA #02 ,:.. ,. .:. �.. ., .. ..• .: 15 -, PDD 07 � ___ � 0.65 AC N. rvvd - - - - 10 YEAR _7 • • :• �....: 7 15 % t N „ :152 _ 154 4�', , 54 ,. /, I , I `L, I �' '� O I I I 5- : -- � > I AVERAGE DEP I . Cl. PDD 03 > , I : I s 154 I I1 I.I 1 MAX. <, r ::. ' >. RD -04 HW -7 HW -8 155 I' 11 .1 i 45 I I< PDD -09 1 �,. `: D04 "i 1 EXCELSIOR MAT 2 3 i , , DA #01 ,, . 6:5 I n I DA #14 1ss E1 A AT SEAMS OVERLAP S _ I 26.91 AC lJ ,gin f - Y - - - - - - -. _- -- N. /�0 - - - -. - - -, , 4.34 AC _ - AVERAGE PINCH WIDTH =2.10 �:. j. PDD 1t3 N A , �.:,, h lssl t E CR NE ( I :: �s _ DA #07 DA #09 �, . 0 i ,; 1 , t.. STAPLES 2 O.C. 6 LOG YARD I -„ 153 ": I _ ; N � h I' 2.39 AC : `�. PDD 14 - I � > / _� � � ,: � 0.25 AC ,__; o �` { BOTH DIRECTIONS 55 i �, -:` 1. , PDD -20 �c� NOTE, PREPARE, SEED, AND INSTALL SOIL EROSION CONTROL NW N r, CRA E I I , , �� 156 PDD -12 ,l. DA #19 I , BLANKET ON DISTURBED AREA OF DITCH. I / DA #20 159 LOG YARD I 4 r1 1. I :r 157 I _. 1.11 AC / I DA # 13 ® / I :. , ._ I 6.87 AC I : ,60 ,-I , - ° 158 - - N. , �„d I i:., , s.:. 0.05 AC t<:: _ ,.,_ ._ N.T.S. - SCALE: ti -:_ 6. -- RD 08 ....... I ' I -; r'. ., _ : 160 1 RD 07 1 , y > ., 16 L ..; PDD 19 PDD -03 0 ,�,,�� - I s I -,; .. -, �..) " ,,. ,. .. .. °` �'Y� _ .PDD 14 _ I , I - :. , HW 15 h O J� \"iii,,. ® 10 YEAR - Ui�� -154 •,.,: .. HW -13:. y- . � _ _- .. . ,. .... _ _- __ ,.., _ - 162' .. h: o / 164 a... -•''' � EXCELSIOR MAT 2" OVERLAP AT SEAMS STAPLES 2' O.C. BOTH DIRECTIONS NOTE: PREPARE, SEED, AND INSTALL SOIL EROSION CONTROL BLANKET ON DISTURBED AREA OF DITCH. PDD -3 SCALE: N.T.S. 10 YEAR .I L MAX. EXCELSIOR MAT 2" 3 OVERLAP AT SEAMS AVERAGE PINCH WIDTH =4.60' STAPLES 2' O.C. BOTH DIRECTIONS NOTE: PREPARE, SEED, AND INSTALL SOIL EROSION CONTROL BLANKET ON DISTURBED AREA OF DITCH. PDD-04 SCALE: N.T.S. 1 MAX, EXCELSIOR MAT 2" 3 OVERLAP AT SEAMS / AVERAGE PINCH WIDTH =4.50' STAPLES 2' O -C. NOTE: PREPARE, SEED, AND INSTALL SOIL EROSION BOTH DIRECTIONS CONTROL BLANKET ON DISTURBED AREA OF DITCH. PDD-05 SCALE: N.T.S. 10 YEAR I Max. � "� i l ,} EXCELSIOR MAT 2 3 OVERLAP AT SEAMS .AVERAGE PINCH WIDTH =4.30' STAPLES 2' O.C. BOTH DIRECTIONS NOTE: PREPARE, SEED, AND INSTALL SOIL EROSION CONTROL BLANKET ON DISTURBED AREA OF DITCH. PDD - SCALE: N.T.S. N �, i ___ _ --,--- _ ._ . . � I I Una __ SCALE: 1°' =100' , �.. 1 , i I :�; � A - L, : I � "I I i \ / H 1 ] 11' , I .- ,;NORTH LOG YARD �:', :'� :`I i __I 163 -165 ' 1111 DA #24 �s� w I- F & HEADWALL TABLE , ,1" 'ss r. I _ -_. D07 D08 a--- . _.166 _ --- -- - N: � `0 - 2.76 AC DA #23 - DA #21 _ I; - PDD -18 .. - - _- t - t so - -- - - ' I (; (-' _ 160 . -- ID INVERT LOCATION NOTES 4 31 AC r I" I , HW -14 167 _.._ .. 3.98 A �. r i � I, , L / { % / l � PLANT N: 23.56 ?RECAST CONCRETE HEADWALL 49 �' :, t; L ,� L I,, I' ; ' , �r :i 160 HW -1 INV = 146.50 (D01) ' ;! - ( I, DA #12 PLANT E: 769.18 h r ,. L' r t ;. I s, i 8" RCP 155 1= -, , PDD -17 I I .__ "_ -_,_ PDD -11 0.59 AC > r •,. • :.• I PLANT N: 153.76 RECAST CONCRETE HEADWALL !! ; �: , I,,: I , W- INV = 150.00 D01 i (,. .,4. , 76 .1 fr :n h PLANT E 9 8 i8" RCP h I: PELLETIZING BL h I 1 I:. I '4 i I .a v ° �: ' "" PELLET LOADOU _ _. _ _. . I N, ,YVd .:r. . , . _ 1; I : . . , .. -. ,.�: -- r -, .. , - a PLANT N: 1913.27 ?RECAST CONCRETE HEADWALL DA #18 _.. DA #11 W- INV = 146.50 D02 9 / (� .F` VARIABLE WIDTH IF PLANT E: 769.35 18" RCP 1 :, I 1.08 AC I ,,, MANENT D EASEMENT j 1. j - s _ 1 I I', �' I -0.53 AC o o �4 PER RAINAGE _,. - - RECAST CONCRETE HEADWALL .). I �,. PLANT N: 1846.24 ? LL T �. s - -_ ,< f. " , 6 HW -4 INV = 150.00 (DO2) I ;; r , ,. 1 .., > �, o -15 PLANT E: 769.18 18" RCP i I. " �n I cc: I; � I, . PD i Cn 156 - DA #03 a': I PDD -03 N , I cv OUBLE PIPE - - _.. - - - -- - _ _ -:; ` : -- - - PLANT N' 1907 01 _ I 60 = �-- zn - - - - 1 - D 7 50 AC RECAST CONCRETE HEADW N -- I L., , _ = ALL vv0 I HW 5 INV 14225 (D03) 11. i_ ,: 55 w PLANT E: 1443.90 15o NORTH CRANE LOG YARD , -. ,,_. n i _- : 30 DOUBLE RCP 'S CLASS IV AVERAGE DEPTH= 1.5 �h I 1, o /. I 1 AVERAGE DEPTH =2 ' !�_] AVERAGE DEPTH =3' _'- f - ,.) 1 -, I 1': :n °� PLANT N: 1792.27 DOUBLE 159 PIPE j• i HW -6 INV = 147.85 (D03) RECAST CONCRETE HEADWALL �;` f' I : ':.' ` �. 35 PLANT E. 1460.36 - Iz _._ I O' I 50" DOUBLE RCP'S CLASS IV I Pao 18 ' ( ) I MAINTENANCE RD -09 4 I I _ ,: �n x a :_ _ 152: _ - - / -- N. read �. - - =x :.. ,. .:. ,. ::. PLANT N: 1727.19 PRECAST CONCRETE HEADWALL :. ! ; t. • :... . . :.,., . BLDG. HW -7 INV = 148.75 (D04) , " . L. I, [11 ' - .' s,_r - PLANT E: 1485.94 c4 RCP n :. .;:•..... r� ;::: HAMMERMILL I 2 G' .',„ ': A: h : '' ".''J� :: �. t �'' ....." .`':. , / _ . I (f ' -Iii 25 ? Cl7NCRFTF HFAnWAI HW -8 INV = 149.20 (D04) PLANT N: 1727.19 RECAST PLANT E: 1534.72 24" RCP HW -9 INV = 148.30 (DO5) PLANT N: 1945.07 'RECAST CONCRETE HEADWALL NOTE. THICKNESS PLANT E: 1771.78 18" RCP (CLASS IV) HW -10 INV = 149.38 (DO5) PLANT N: 1843.34 ?RECAST CONCRETE HEADWALL '% ( y .:.^ ` PLANT E: 1786.69 18" RCP (CLASS IV) HW -11 INV = 151.00 (DO6) PLANT N: 1992.95 ?RECAST CONCRETE HEADWALL CLASS 1 9" PLANT E: 2053.81 36" RCP HW -12 INV = 152.00 (DO6) PLANT N: 1895.00 ?RECAST CONCRETE HEADWALL cS o' 149' .• ` PLANT E: 2153.10 36" RCP HW -13 INV = 150.49 (DO7) PLANT N: 1547.40 PRECAST CONCRETE HEADWALL 0.05 0.004 PLANT E: 1464.24 18" RCP HW -14 INV = 151.00 (DO7) PLANT N: 1480.09 ;PRECAST CONCRETE HEADWALL D06 /HW -11 ' PLANT E: 1445.49 18" RCP HW -15 INV = 151.20 (DO8) PLANT N: 1547.77 ?RECAST CONCRETE HEADWALL 11' 12.5' PLANT E: 1553.59 24" RCP HW -16 INV = 152.00 (DO8) PLANT N: 1475.12 :PRECAST CONCRETE HEADWALL 16' - - PLANT E: 1563.30 24" RCP HW -17 INV = 155.80 (DO9) PLANT N: 1176.81 PRECAST CONCRETE HEADWALL / 7 ��. PLANT E: 1925.24 24" RCP HW -18 INV = 156.20 (DO9) PLANT N: 1097.57 PRECAST CONCRETE HEADWALL 2.43 1.56 PLANT E: 1912.25 24" RCP I ( 14.35 AL ( * f I 155 �` , - - _ I , ,I I .. CHIP PAD C I - _ 1p I w CULVERT TABLE 1. , - - -.�- ,�. I - n n _ I - - - -- - - - -- - - -- - -- I, I,i �' I, I _ I , : 4 I x a� . n` :: 1 ( - - -- ,. ,� I DID . 4 a, 6 I ; I INVERT UP s x `x :.I i 1.`156 o - T h 001 18 NV } NV - ) _ -- - PDD -05 "RCP 131' 2 69% I = 146 50 (Htt 1 I = 150 00 (HW -2 % 1 ; I': . I:`= I i 64.x, D02 18" RCP 68' 5.22% INV = 146.50 (Hi6' -3) INV = 150.00 (HW -4) F ,� I i x 1 i ( I . i I a; I I, rn :}t 6n - - -' - - -- - - - - -- --' - - - - - - -- - -- - -- --.._ _._. t:: , I 1s9_, D03 30" DOUBLE RCP's (CLASS IV) 116' 0 52% INV 147 25 (her 5) INV 147 85 {HW 6) 08/22/12 PERMIT LRA MJM MJM 1r, 11 ., _ : I I 7. ,." -- 40 ` " 24" RC 49' 0.92% INV - 148.75 (HO-7) INV - 149.20 (HW -8) NO. DATE REVISIONS . DWN CKD APPD SOUTH CRANE LOG YARD ' - • f- v 1 (, D04 P \ , ., . -4 F ,,' ,,;,, .,� > `'�.::6 . '.: ,s x .. ,r y.1 "r X n �.•' �. :' t'`,:i� .,� A TSB.. Ssy .' a'`,_.= 0 05 18" RCP CLASS IV 1.05% INV = 148.30 Hirt -9 INV = 149.38 HW -10 SEALS ' / :155. r' < 1 i r Iy- tjL >�,, _. ;-°. ! "BFI :�- t' I .' .� I. :'t. t,7CJ I F.._ _. _,i 1. i:� i ' / - -. ' .! 'iii {_ F �_ . _ ', I .. $! D 103 f I !- -- i -L:., ' .., , <, - ( II° f. /I D06 0,72% INV = 151.00 H'DI -11 INV = 152.00 HW -12 %tA x .,x ,x°, . x. I �,, I x "4 '� 36" RCP 140' ( ) ( ) , �1A, I - &- - �nn 1. _, 1 � N. x x r . . , i i I D07 18" RCP 70' 0.73% INV 150.49 (f 1 13) INV 151.00 (HW 14) , I. I: I ,I I, i I , I I� " • rte, (:I ' r : "n L. �" I i . - �.! aj As I ;, I TRUCK ( . ^ /56 D08 24" RCP 74' 1.09% INV = 151.20 (H'Ir -15) INV = 152.00 (HW -16} LIE DARES ;i r`. t ,-: _ t "I GEAR x S:. - I 1:':: DUMP �; i 11 °4 - :154 i 1 o VARIABLE WIDTH = r- _ _ =-I / c ) c ) I II , ` I I D09 24" RCP 81' 0.50% INV 155.80 H 117 INV 156.20 HW 18 DRAINAGE IMPERVIOUS -[ ,,* ,.. I. , I '..t 1 ".e'" I ,I :. . %...�,, I PERMANENT DRAINAGE EASEMENT,- ", AREA IMPERVIOUS I1:1 I , I 7 AREA I W I. 1.. I S ALE ` N0. AC AC N. Y�� DA #22 a x ,� ,., 1 1 I I tl� 6 R�� \ , I I I I PER LEGIE �� ti� 2.96 AC ,, ,, l I I I•: SG.UTH LOG YARD I I I �A *PDD -01 26.91 10.87 40.4 I' :'',' i > �. . ._ 154;' _ s��e�a (I. -'., l ' ( I ::< I ' I ,i 1; i , PDD 05 - � � SITE AREA 5,233,430 01 SQ. FT. x x � - I t _. _ _ PDD -02 0.65 0.14 21.5 1 i :: i,. 153.`:. 155,. fi I t : :� :1' "i II BUILDINGS/PADS/FOUNDATIONS • - 410 729 S FT Q , I ;. I :I `�.I lI' •t. :I i' � , SIDEWALK 2,309 SQ. FT Ill/ 1 * 7.50 3.22 42.9 I , a i 1 -`; 153 r PDD 03 �� x x x I I .. , - -- _ ,i� - , -_ >,,, ,. I L =:.: - , _: „_ _, I _ - - -, .. _,, - -- - - -- - _ %� _ MID-SOUTH Engineering Co. N. wo = LIGHT DU 1-1 ,- . '�"7 I (.. ' �: y , I: -./ _ LIGHT-DUTY ASPHALT 42 679 SQ. FT g g I ,, -;x . 1 : ° - � ,,I I � ":'' 35 ; 154 n PDD 04 1.99 1,29 64.8 ( , ,\, I. , CO <> 1658 Malvern Ave.- P.O. Box 1399 Ill I i ,,,'v, :. - ..., - ; j.,,. _ ` 153 - MEDIUM DUTY ASPHALT 218,226 SQ. FT. Im . a �.,. L,, - ,,. l I Hot Springs, Arkansas 71901 PDD -05 6.30 4.13 65.6 '� �; \i - w , 1 _ , I,,.. y I .i /52 : r� !, ::I` €: HEAVY -DUTY ASPHALT 12 9 FT I # °x x, , , , ;� :' I '` .', .,:?�', / 6,14 SQ. PDD -06 14.35 6.62 46.1 . !. ° i ( . : ,, Executive Circle �� 1149 ��; a �. , , N r i - i 1 Cary, North Carolina 27511 - _ i':: . .... -. - h : �I MEDIUM DUTY CONCRETE 76 016 SQ. FT. PDD -07 2.39 1.25 52.3 1 4nn. ?' ., �Iu. - - - -- - - - - -- - - - -- _ __. N, c, � -- 1 , : r r "i = -- - - - - - - MS DRAWING NO. .x. : I; II -, t /� l -f P -08 0.82 0.22 26.8 '' , s I ; . 152 ✓ I ,, , t I �., ' HEAVY -DUTY CONCRETE 126,885 SQ. FT. _ DD , r _: : < 5874 1600 � I �� 0 G 18 �•' _;. I :: ? I h I: O -11 . I / ,� I � HEAVY -DUTY CRUSHED STONE 153 208 SQ. FT. PDD 09 0.25 0.16 640 -:1 ;.� (: 1 :'.l I, t'; O r.r ' ( - t I ' THIS DOCUMENT � _�„ . ,' , �; % IS THE CONFIDENTIAL PROPERTY OF ENVIVA LP HW -2 �': I d A 1 156 201 S . FT. 11 1 I ..I i .;1, I ( ..' ! �r1.l ti TOTAL PDD 10 0.29 0.14 48.3 r 1, ;+ ; it' IMPERVIOUS: 22.10% (ENVIVA). THE DOCUMENT AND ITS CONTENTS SHALL NOT BE, �5: 11 1 PDD -05 (:` t : : :, , I.; _ I DISTRIBUTED, COPIED, REPRODUCED OR DISCLOSED TO OTHERS L. f h. i , PDD -11 0.53 0.29 54.7 6 (; :. GED s _ � Q N , . I. � r ": __ _ _ __ U E WRITTEN APPROVAL OF ENVIVA.. PDD 12 0.59 0.064 10.8 NOTE. THICKNESS d- U-+ ,, I i/V 1. D so RD -01 ,� - :: - _ :. „' 001 , d s t t' .I t `. i It i:,4 / ' 1 ii ♦, r s -I '% ( y .:.^ ` 9" RD -02 D02 /HW -3 10' 11.5' 1. PDD -01 DA AND IMPERVIOUS AREA IS A W PDD 01 THRU PDD -04 CLASS 1 9" RD -03 D03 /HW -5 20' , ` I 5t �ti 151 a , w, , .. fi ,; L \, f ," cS o' 149' .• ` I 14' 16' 1.4' CLASS B - PDD 13 0.05 0.004 8.0 TOTAL OF S ALES - PDD -07 THRU PDD -20, OF WHICH DRAINS TO 0.9' ', -.., � RD -06 D06 /HW -11 ' 23' � n: %^ ,r , D07 /HW -13 11' 12.5' 0.9' *PDD -14 4.34 1.96 45.2 THIS DA. 16' - - 'j ,- I: 6" - - _.._. , I 14' _ r / 7 ��. ., j RD -10 PDD -01 35' 21' PDD 15 2.43 1.56 64.2 2. PDD -03 DA AND IMPERVIOUS AREA IS A 40' - 0.5' CLASS B 6" RD -12 11 30' - 1 0.5' - -- _- __ --- - - - -, - - -- -__ - -- 1 6" TOTAL OF SWALES PDD- 03,PDD -04, PDD -11 - RD 12 PDD -06 r r „ __ ._ _ _- :�_ /°r I , ....� _. __.. ,f w PDD -16 0.36 0.13 36.1 THRU PDD -13 OF WHICH DRAINS TO THIS DA. l 25 RD -01 ' ;' :f I _. I T _` r 150 t z 147 - � � '' 1 PDD -17 0.77 0.20 25.9 3. PDD -07 DA AND IMPERVIOUS AREA IS A I 40 -- VARIABLE WIDTH PDD -06 PERMANENT DRAINAGE '=ASEMENT I/ RD -11 ' • I PDD -18 1.08 0.44 40.7 TOTAL OF SWALES PDD -07 THRU PDD -10, OF WHICH DRAINS TO THIS DA. I IJ :- N 8332 25 , I'/ 1 : i I : , `. L.. O . PDD -19 1.11 0.44 39.6 - _ _ - -- �. 100 -_ - - -__ 1180.09 ' -- - -__ __- - _ -__- -___ ___ - - - -- . _ - ___ -- O � ' *PDD -20 6.87 2.89 42.1 4. PDD -14 DA AND IMPERVIOUS AREA IS A I I TOTAL OF SWALES PDD -14 THRU PDD -16, OFI � OFFSITE-21 4.31 2.55 59.2 WHICH DRAINS TO THIS DA. N 5. PDD -20 DA AND IMPERVIOUS AREA IS A - - TOTAL OF SWALES PDD 20, PDD 18, I C> C> <> <> O C� C> <> C> <> CO <•> a> < -: C> �>83`32 25" G> C C> C> <> v ' ; I , �, ,. W d, C> : ' 4 5, g / � ,. CI> CD C> u> r:� OFFSITE-22 2.96 0,99 33.4 OFFSITE-23 3.98 0.55 13.8 PDD -17, AND PDD -14, OF WHICH DRAINS TO � � _ � � __ _ � rn - - THIS DA. I w iv, w w w u_i w � � W w w w r,,-i w OFFSITE -24 2.76 0.83 30.0 , I I i i ' RIP RAP DISSIPATOR SCHEDULE DISSIPATOR PIPE OUTLET APRON LENGTH WIDTH THICKNESS STONE D so RD -01 DO1 /HW -1 10' 11.5' 1.6' CLASS 1 9" RD -02 D02 /HW -3 10' 11.5' 1.6' CLASS 1 9" RD -03 D03 /HW -5 20' 22.5' 1.4' CLASS B 8" RD -04 D04 /HW -7 14' 16' 1.4' CLASS B 8" RD -05 D05 /HW -9 11' 12.5' 0.9' CLASS B 5" RD -06 D06 /HW -11 20' 23' 2.1' CLASS 2 12" RD -07 D07 /HW -13 11' 12.5' 0.9' CLASS B 5" RD -08 DO8 /HW -15 14' 16' 1.1' CLASS B 6" RD -09 D09 /HW -17 14' 16' 1.1' CLASS B 6" RD -10 PDD -01 35' 21' 0.5' CLASS B 6" RD -11 j PDD -05 40' 30' 0.5' CLASS B 6" RD -12 I PDD -06 30' 24' 1 0.5' CLASS B 1 6" UA 0 IX 19 A NO PERMANENT DRAINAGE EASEMENT DRAWN BY DATE CHECKED BY DATE LRA 08/13/12 MJM 08/22/12 54- PROPOSES MINOR CONTOUR DESIGNED BY DATE APPROVED BY DATE LRA 08/13/12 MJM 08/22/12 155 PROPOSES MAJOR CONTOUR ENVIVA PELLETS NORTHAMPTON, LLC STORM 1ft'aTER PIPE �+� ®v� ®1 g ®r-v DRAINAGE AREA V ff �� ii ®V 1��7 PDD - PERMANENT DIVERSION DITCH I V O RTHAMT® PROJECT n � PLANT HK HEADWAUL C �Ve 1� LA SYSTEMS pfi DRAINAGE PIPE CLEARING/ DIRTWORK GENERAL H RD- RIP -RAP DISSIPATER DRAINAGE DELINEATION PLAN SCALE DRAWING NO. REV. IP-## INLET PROTECTION 1 " ® 100' A SAVED: 08/23/12 3:02 PM PLOTTED: 08/23/2012 3:26 PM USERNAME: lallen FILENAME: 16000G18.dwg