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HomeMy WebLinkAbout20080748 Ver 1_401 Application_20080408.~ • Soil & Environmental Consultants, PA 11010 Raven Ridge Road Raleigh, North Carolina 27614 Phone: (919) 846-5900 Fax: (919) 846-9467 www.SandEC.com Apri128, 2008 S&EC Project # 11025.W1 To: N.C. Division of Water Quality ~ 8 0 7 4 8 401 Oversight and Express Permits Unit Attn: Cyndi Karoly 2321 Crabtree Boulevard, Suite 250 ~', Raleigh, NC 27604-2260 '~ ~ ~ ~~~ From: Nicole Thomson Soil & Environmental Consultants, P.A. 11010 Raven Ridge Road Raleigh, NC 27614 ~i" . ~ „~, Re: Creekside Village Garner, Wake County, NC On behalf of the applicant, Mill Associates, LP (Attn: Mike Nepywoda), please find attached a complete application and supplemental information requesting a Neuse River Riparian Buffer Authorization from the N.C. Division of Water Quality (DWQ) for the activities proposed below. Please contact me at (919) 846- 5900 if you have any questions or require additional information. PR(liF(`T RTTMMARY Project Name Creekside Villa e Project T e Residential Subdivision Owner / A licant Mill Associates, LP Count Wake Nearest Town Garner Waterbod Name UT to Swift Creek Basin /Sub-basin 03-04-02 Index Number 27-43- 8) Class C;NSW TMPAC'T RTTMMARY Stream Impact (acres): 0 Wetland Impact (acres): 0 Open Water Impact (acres): 0 Total Impact to Waters of the U.S. (acres) 0 Total Stream Impact (linear feet): 0 Neuse River Riparian Buffer Impact (square feet) 1,624 sq. ft. (984 sq. ft. Zone 1 and 640 sq. ft. Zone 2) Attachments: Pre-construction Notification (PCN) Application Form Agent Authorization Forn~ USGS Site Vicinity Map Soil Survey Vicinity Map Impact Maps and Drainage Plan Level Spreader Worksheets - Operations and Maintenance Agreement Charlotte Office: Greensboro Office: 236 LePhillip Court, Suite C 3817-E Lawndale Drive Concord, NC 28025 Greensboro, NC 27455 Phone: (704) 720-9405 Phone: (336) 540-8234 Fax: (704)720-9406 Fax: (336)540-8235 Office Use Only: Form Version March OS USAGE Action ID No. DWQ No. ~ 8 ~ 7 4 $ (lt any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) I. Processing 1. Check all of the approval(s) requested for this project: ^ Section 404 Permit ® Riparian or Watershed Buffer Rules ^ Section 10 Permit ^ Isolated Wetland Permit from DWQ ^ 401 Water Quality Certification ^ Express 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: N/A 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ^ 4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII, and check here: ^ 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), check here: ^ 3x A . II. Applicant Information °,"~ ` ~ ~ 3 ." k t~:~ u;.. ... ~ ,~ 1f , 1. Owner/Applicant Information ~`~k. '~` ~ LLJ~ Name: Mill Associates LP ~ z ~ a ~ ~ ~ K ' ~F~~~.*~c Mailing Address: Attn: Mike Nepywoda ~^~=~ ~'~''''''` "''''~' PO Box 691551 Orlando, FL 32869-1551 Telephone Number: 407-257-5680 Fax Number: 407-363-3522 E-mail Address: 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Nicole J. Thomson Company Affiliation: Soil & Environmental Consultants, PA Mailing Address: 11010 Raven Ride Road Raleigh NC 27614 Telephone Number: (919) 846-5900 Fax Number: (9191846-9467 E-mail Address: NThomson(a,sandec.com Page 1 of 8 III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of prof ect: Creekside Village 2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): 1619032447, 1619033527, 1619028499 4. Location County: Wake Nearest Town: Garner Subdivision name (include phase/lot number): Creekside Village Directions to site (include road numbers/names, landmarks, etc.): From Raleigh, take US Hwy 70 East; turn right onto Benson Road (NC 50) south; continue south on Benson Road for approximately 3 miles; turn right onto Rand Road; subject property will be approximately 1.5 miles ahead on the left (Arbor ate Drive). Site coordinates (For linear projects, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) Decimal Degrees (6 digits minimum): 35.6534 °N 78.6265 °W 6. Property size (acres): +/- 7. Name of nearest receiving body of water:UT to Swift Creek (27-43-(8); C; NSW; 03-04-02) 8. River Basin: Neuse (USGS Cataloging Unit 03020201) (Note -this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/ma~s/,.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: The surrounding land use is a mixture of single family residential homes in combination with some agricultural fields and forested areas. Page 2 of 8 10. Describe the overall project in detail, including the type of equipment to be used: The proposed project is for a residential subdivision. Heav~quipment typically necessary for road and home construction will be used for this project. 11. Explain the purpose of the proposed work: The purpose of the proposed work is to provide additional housing for the area. Proposed impacts to protected Neuse River Riparian Buffers are associated with the bypass channel for level spreader "B" as part of the diffuse flow requirements per the Neuse River Riparian Buffer Rules { 15 A NCAC 2B .0233 (5~} and the NC DWQ Level Spreader Design Guidelines. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. S&EC staff verified the top of bank for the stream in 2008. USACE and NC DWQ staff have not been to the site as there are no stream or wetland impacts proposed and the client is not disputing the presence or applicability of the Neuse River Riparian Buffers. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. No additional permits are anticipated at this time. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. Each impact must be listed separately in the tables below (e.g., culvert installation should be listed separately from riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts, permanent and temporary, must be listed, and must be labeled and clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) should be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Provide a written description of the proposed impacts: Impact "B" (Level Spreader Bypass Channel): 1,624 square feet of riparian buffer impact (984 square feet Zone 1 and 640 square feet Zone 2). Page 3 of 8 2. Individually list wetland impacts. Types of impacts include, but are not limited to mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. Wetland Impact Type of Wetland Located within Distance to Area of Site Number Type of Impact (e.g., forested, marsh, 100-year Nearest Impact (indicate on map) herbaceous, bog, etc.) Floodplain Stream (acres) es/no) (linear feet N/A N/A N/A N/A N/A 0 Total Wetland Impact (acres) 0 3. List the total acreage (estimated) of all existing wetlands on the property: 0 acres 4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. To calculate acreage, multiply length X width, then divide by 43,560. Stream Impact Perennial or Average Impact Area of Number Stream Name Type of Impact Intermittent? Stream Width Length Impact (indicate on ma) Before Im act (linear feet) (acres N/A N/A N/A N/A N/A 0 0 Total Stream Impact (by length and acreage) 0 0 5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.). Open water impacts include, but are not limited to fill, excavation, dredging, flooding, drainage, bulkheads, etc. Open Water Impact Name of Waterbody Type of Waterbody Area of Site Number (if applicable) Type of Impact (lake, pond, estuary, sound, bay, Impact (indicate on ma) ocean, etc. acres N/A N/A N/A N/A 0 Total Open Water Impact (acres) 0 6. List the cumulative impact to all Waters of the U.S. resulting from the project: Stream Impact (acres): NA Wetland Impact (acres): NA Open Water Impact (acres): NA Total Impact to Waters of the U.S. (acres) NA Total Stream Impact (linear feet): NA 7. Isolated Waters Do any isolated waters exist on the property? ^ Yes ®No Page 4 of 8 Describe all impacts to isolated waters, and include the type of water (wetland or stream) and the size of the proposed impact (acres or linear feet). Please note that this section only applies to waters that have specifically been determined to be isolated by the USACE. No isolated waters are present on the subject property. 8. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ^ uplands ^ stream ^ wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Current land use in the vicinity of the pond: NA Size of watershed draining to pond: NA Expected pond surface area: NA VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. Permanent impacts to jurisdictional streams have been avoided completely. Streams are not crossed by any roadway infrastructure. The Neuse River Riparian buffer impacts associated with the level spreader bypass channel are necessary in order to comply with the diffuse flow requirement of the Neuse Buffer Rules, per the Level Spreader Design Guidelines. VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on January 15, 2002, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of Page 5 of 8 aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state.nc.us/ncwetlands/strm~ide.html. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. No permanent impacts to streams are proposed, therefore stream mitigation is not being proposed. Additionally, the Neuse River Riparian buffer impacts are "allowable" per the table of uses { 15 A NCAC 2B .0233 (6)},therefore buffer mitigation is not being proposed. 2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at (919) 715-0476 to determine availability, and written approval from the NCEEP indicating that they are will to accept payment for the mitigation must be attached to this form. For additional information regarding the application process for the NCEEP, check the NCEEP website at http:/lh2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please check the appropriate box on page five and provide the following information: Amount of stream mitigation requested (linear feet): 0 Amount of buffer mitigation requested (square feet): 0 Amount of Riparian wetland mitigation requested (acres): 0 Amount ofNon-riparian wetland mitigation requested (acres): 0 Amount of Coastal wetland mitigation requested (acres): 0 IX. Environmental Documentation (required by DWQ) 1. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes ^ No 2. If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ^ No ^ Page 6 of 8 3. If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ^ No ^ X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. 1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ® No ^ 2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Imnact "B" Level Snreader Rvnacc Channel Zone* Impact (s uare feet) Multiplier Required Miti ation 1 984 3 (2 for Catawba) N/A 2 640 1.5 N/A Total 1,624 N/A cone i extends out su teet perpendicular from the top of the near bank of channel; Zone 2 extends an additiona120 feet from the edge of Zone 1. 3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Riparian Buffer Restoration /Enhancement, or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0244, or .0260. The impacts to the Meuse River Riparian Buffers are "allowable" per 15A NCAC 2B 0233 (6) and therefore buffer mitigation is not reauired. XI. Stormwater (required by DWQ) Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. If percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed impervious level. This proiect proposes "allowable" impacts to the protected Meuse River Ri arian Buffers and therefore a Stormwater mana ement plan is not required Page 7 of 8 XII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. A sanitary sewer system will be utilized for the proposed subdivision and will tie into existing adiacent lines. XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ^ No Is this an after-the-fact permit application? Yes ^ No XIV. Cumulative Impacts (required by DWQ) Will this project (based on past and reasonably anticipated future impacts) result in additional development, which could impact nearby downstream water quality? Yes ^ No If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent North Carolina Division of Water Quality policy posted on our website at http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: We have reviewed the "DRAFT Internal Policy Cumulative impacts and the 401 Water Quality Certification and Isolated Wetland Programs" document~re arp ed by the NC Division of Water Quality on April 10, 2004 version 2 1 The draft states that small residential~rojects are unlikely to cause cumulative impacts This residential project does not meet any of the three criteria of private proiects that can clearly result in cumulative impacts This development is very small in nature, has no commercial component associated with it is within a rimarily residentially developed landscape and therefore the utility infrastructure (i e water and electricityl are already in place to service theproposed development We anticipate that you will advise us if a aualitative or quantitative impact analysis is required XV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). 2 ~ Applicant/gent's Signature _ Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 8 of 8 Environmental Con~ultant~, PA Road Raleigh. North Carolina 27614 Phone: (9l9) 846-5900 Fax: (9l9) 846-9467 www.SandEC.com Phone: Project Name/Description: Z.2~Z~~S~ ~(~ S&EC Project # l l 0 2.5. w j Date: ~ ~ Uz.~ ~- ~, ~ The Department of the Army U.S. Army Corps of Engineers, Wilmington District P.O. Box 1890 Wilmington, NC 28402 Attn: Field Office: Re: Wetlands Related Consulting and Permitting To Whom It May Concern: I, the current landowner or municipal official hereby designate and authorize Soil & Environmental Consultants, PA to act in my behalf as my agent in the processing of permit applications, to furnish upon e~uest supplemen ulformati~in ~s~u~ t~of applications, etc. from this day forward. The ~+er~u~ day of ~.~~C- This notification supersedes any previous correspondence concerning the agent for this project. NOTICE: This authorization, for liability and professional courtesy reasons, is valid only for government officials to enter the property when accompanied by S&EC staff. You should call S&EC to arrange a site meeting prior to visiting the site. ~~~~ ~~ lti (~~~~~~ ~ ~ 3 ~o~ Print Property Owner's or Municipal Official's Name Proper Owner s or 'cipal Official's Signature cc: Ms. Cyndi Karoly cc: Mrs. Nicole Thomson NCDENR - DWQ Soil & Environmental Consultants, PA 2321 Crabtree Boulevard Raleigh, NC 27604 . Charlotte Office: Greensboro Office: 236 LePhillip Court, Suite C 3817-E Lawndale Drive Concord, NC 28025 Greensboro, NC 27455 Phone: (704) 720-9405 Phone: (336) 540-8234 Fax: (704)720-9406 Fax: (336)540-8235 AGENT AUTHORIZATION FORM hi a soy, _., zim Ab cn 27 _ 1 ' i\`. SITE f x, u= • ` � � � 2 � iso ``' � %� �`f�---��~; j IJ VZ 113 ',� �� f . '�• \ , � X77 ear" � n r.-� ( �„_/'-'" � 1C 4' _. 4 • ~� 1r • �� 383X ,� Cern � � ' `\ 1•. �sa ti � � W E � � _ � • l r •) • �_,_• •• \\� xis \ i p� s��ir Project No. Scale: 11025.W1 1"=2000' FIG. 1 - USGS TOPOGRAPHIC MAP SOURCE: GARNER 11010 Raven Ridge Rd. Project Mgr. 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Raleigh,NC 27614 NT MM WAKE COUNTY NC SOIL SURVEY 919&16-5900 , Date: 04/23/08 Filter Strip, Restored Riparian Suffer and Level Spreader Inspection and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Important maintenance procedures: - Immediately after the filter strip is established, any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). - Once a year, the filter strip will be reseeded to maintain a dense growth of vegetation - Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. - Two to three times a year, grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC,1993). Forested filter strips do not require this type of maintenance. - Once a year, the soil will be aerated if necessary. - Once a year, soil pH will be tested and lime will be ad~ed if necessary. After the filter strip is established, it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County). Records of inspection and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential roblem: How I will remediate the roblem: The entire filter strip Trash/debris is present. Remove the trash/debris. s stem The flow splitter device The flow sputter device is Unclog the conveyance and dispose (if applicable) clo ed. of an sediment off-site. The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for re air. ~rl' ~ i BMP element: Potential roblem: How I will remediate the roblem: The Swale and the level The Swale is clogged with Remove the sediment and dispose lip sediment. of it off-site. The level lip is cracked, Repair or replace lip. settled, undercut, eroded or otherwise dama ed. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip, and shows stormwater has then plant a ground cover and bypassed it. water until it is established. Provide lime and aone-time fertilizer a lication. Trees or shrubs have begun Remove them. to grow on the Swale or just downslo e of the level li . The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then reestablish xo er erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed (enlarge if downhill. necessary). After this, reestablish the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of if a licable). a roximatel three to six inches. Areas of bare soil and/ or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer a lication. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer a lication. Plants are desiccated. Provide additional irrigation and fertilizer as needed. . Plants are dead, diseased or Determine the source of the dying, problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide aone-time fertilizer a lication. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used, do not allow it to get into the receiving water. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality local Regional Office, or the outlet. 401 Oversi ht Unit at 919-733-1786. y,. iC~tilttl'.1;L~i',~ IS1C:::'-'.I':~ :)\ 'I11 ~I' I) llt'•.'r ~\tl5il I~ia~ t 14) :l'~clll ;>!!l l Ctt• If)l' Jltt~);ia;Iill'l' Ut liI, Silail?iill-!ilt:~ ~>3tili~li•;dlt.1 i1+iCl: illZ~l' ~. 6 i3,'I~:i qt) 1 ~11t\ 1)ti~~(,) i)t :3I7',' ;ail)l13Cila~ '.\1111 ~31t' i\1~\'111 (?i' t)Ilt)1' Il) Nf)C Cti;$ISL:Ci 1SI ll?:.' 1\iCl'3 t?1 it'.l'rl\1:'iwi)1L: ~):YI!\. 1'rin; ,ian,~: h'lich~cl S. Nc.~{'~~•o<'i~ - 5 ~~;\.. C:crt7st~:cliun ~'l~n~ts;cr 1~7iprc7la .\:i,ir~5ti: ir.CJ. +3ox b`lt ~5 "s 431.1s:)d+~, t~lo:-i<3~ 3'>tifi9-1S{ 1 _ 1'i~3att~•• 4®~-''~7-5654 ~ _ _ _ .. ` 1~( t~ YYY " _ _ - _ -- -c _ ~~ ~ ~(?~l: I::~ l'.}.tt1 :L'.~l`.LE.)?1~1=: :~.Il~t~ ti`Il7:.1~1,~ ai'1 h: i3 Qi i~'I~ll"OiC1~l "ti. ~.:ia l; .I la"^ I;IYI:'Sti •tl.1R' 111I:^ X11°'. I?: 1!2: ~lt;~ I:d\:: t1.itF ~s'Ea~ I:1•.'~ z!'C:~I{ft'11i tl; (!?~ -.I~':71\',~IL71 {1.E~ i~~,;n'l:.;IFa7l ",I)C ati'~~Ii~~ 155. SLLL /LQ~''/'~l/ !~[%17~!'~~.~` - rl \;):;s•\ 1'lllali~: ti)r 11 4tliz c)t 1 I {'1)t3111\ s)!, ~ /~ .~;:11:.:1~.:.)\ iy-l~it•+ IC'9:ts .!.!.U_.L'~~A.~..5,.•_.~e~y ~.Q~G3... [;~ r~i7.E.s1.v .tl)1...lrL~:i h~.l>r: I;t~ Illl; ao~. ~^,;i\' i)t Air"~ I .°~Q~ .:9'?t} :3Ct:Ch?\'.l~': fir, t17.~ ;~1:. lt.Ci:.llt)I1 lk.l • S t 751 1 EE 9 j A ~ f t(?f:°,V'31,.', NwF E~~lli.@Il.., l.it,iil :I I:..i3'.t,'I:ESl:CI: ld:~hf.~lE.C111.;, 7e~'ICIlC~ti 3'(YV ~''IlElli ellll~ Ut',I::!i:i ~~a:. ~l :1t. ;~i\ C(Illi13115$ItHt d\ )IE~~ /'~~'Qa (..1'3.:C>;S1C1C ~11,)~3yC 1rl'Olc':.l ~3nler, T~gfi}~ Cart~6ins 272.3-)'l'~S ~~ M ~~ S ~ .~~ H~ NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be filled out, printed and submitted. L.... -: Tt~aResct,~efr~ CJtackl+sf jP~tltt)tt~tstbe ,,fr~~ ubntiftpEta~tg>~hatlotthe ~ ; ,3~~4iort:....:~ _ ~....._....:.' I. PROJECT INFORMATION Project name Creekside Village Contact name Johnny Edwards Phone number 828428 Date April 23, 2008 Drainage area number 3020201 II. DESIGN INFORMATION For Level Spreaders Receiving Flow From a BMP Type of BMP Drawdown flow from the BMP cfs For Level Spreaders Receiving Flow from the Drainage Area Drainage area Impervious surface area Percent impervious Rational C coefficient Peak flow from the 1 inlhr storm Time of concentration Rainfall intensity, 10-yr storm Peak flow from the 10-yr storm Where Does the Level Spreader Discharge? To a bioretention cell? To a wetland? To a filter strip or riparian buffer? Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass Width of dense ground cover Width of wooded vegetation Total width Slope (from level lip to to top of bank) Are any draws present? Level Spreader Design Forebay surface area Feet of level lip needed per cfs Answer "Y" to one of the following: Length based on the 1 in/hr storm? Length based on the 10-yr, 24-hr storm? Length based on the BMP discharge rate? Design flow Is a bypass device provided? Length of the level lip Are level spreaders in series? 784,080 ftZ 329,314 ft2 n a~ 0.5 9 cfs min 0.22 inlhr 1.98 cfs n (Y or N) n (Y or N) y (Y or N) Please complete filter strip characterization below. 0 ft 50 ft 0 ft 50 ft 5% n (Y or N) 5710 sq ft 13 ftlcfs y (Y or N) n (Y or N) n (Y or N) 9 cfs y (Y or N) 117 ft n (Y or N) OK OK OK Level spreader length OK. Form SW401-Level Spreader, Finer Strip, Restored Riparian Buffer-Rev.2 Parts I. and II. Design Summary, page 1 of 2 Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): M B W Y Peak velocity in the channel during the 10-yr, 24-hr storm Channel lining material n (Y or N) 2 ft 10 ft 30 ft 5 ft 1.8 fps @ 45 cfs Class B Riprap D50=13" t •--- ---------- y M ~~ ~ B M 1 Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.2 PaAs I. and II. Design Summary, page 2 of 2 ~• ~ ~ ~'_~-' ~ ~' Q~ ~~~ ~ O NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be filled out, printed and submitted. .. ?fie Read Gams Ghscktist (Part tlt) must.be peed, Geed cult' `~ 'ak~y recl .~, I. PROJECT INFORMATION Project name Creekside Village Contact name Johnny Edwards Phone number 828428 Date April 23, 2008 Drainage area number 3020201 II. DESIGN INFORMATION For Level Spreaders Receiving Flow From a BMP Type of BMP Drawdown flow from the BMP ~ For Level Spreaders Receiving Flow from the Drainage Area Drainage area 784,080 ftz Impervious surface area 329,314 ftz Percent impervious 0.42 Rational C coefficient 0.5 Peak flow from the 1 inlhr storm 9 cfs Time of concentration min Rainfall intensity, l0-yr storm 0.22 inlhr Peak flow from the 10-yr storm 1.98 cfs Where Does the Level Spreader Discharge ? To a bioretention cell? n (Y or N) To a wetland? n (Y or N) To a filter strip or riparian buffer? y (Y or N) Please complete filter strip characterization below. Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Widthofgrass 0 ft Width of dense ground cover 50 ft Width of wooded vegetation 0 ft Total width 50 ft Slope (from level lip to to top of bank) 5% Are any draws present? n (Y or N) OK Level Spreader Design Forebay surface area 5710 sq ft OK Feet of level lip needed per cfs 13 ft/cfs Answer "Y" to one of the following: Length based on the 1 inlhr storm? y (Y or N) Length based on the 10-yr, 24-hr storm? n (Y or N) Length based on the BMP discharge rate? n (Y or N) Design flow 9 cfs Is a bypass device provided? y (Y or N) OK Length of the level lip 117 ft Level spreader length OK. Are level spreaders in series? n (Y or N) Form SW401-Level Spreader, Finer Strip, Restored Riparian Buffer-Rev.2 Parts I. and II. Design Summary, page 1 of 2 Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): M B W Y Peak velocity in the channel during the 10-yr, 24-hr storm Channel lining material (Y or N) 2 ft 10 ft 30 ft 5 ft 1.8 fps @ 45 cfs Class B Riprap D50=13" • • I ~ M • B M Form SW401-Level Spreader, Fifler Strip, Restored Riparian Buffer-Rev.2 Parts I. and II. Design Summary, page 2 of 2 IIL REQUIRED ITEMS CHECKLIST 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 the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Initials Pagel Plan She Plans (1" - 50' or larger) of the entire site showing: - Design at ultimate build-out, -Off-site drainage (if applicable), -Delineated drainage basins (include Rational C coefficient per basin), -Forebay (if applicable), -High flow bypass system, -Maintenance access, - Recorded drainage easement and public right of way (RONV), and - Boundaries of drainage easement. ~2 2. Plan details (1" = 30' or larger) for the level spreader showing: - Forebay (if applicable), -High flow bypass system, -One foot topo lines between the level lip and top of stream bank, -Recorded drainage easement, and - Design at ultimate build-out. 3. Section view of the level spreader (1" = 20' or larger) showing: - Underdrain system (if applicable), - Level lip, - Upslope channel, and - Downslope filter fabric. -~ 4. Adate-stamped photograph of the filter strip that clearly shows the type of vegetation that is present. V 5. An assurance that the installed system will meet design specifications upon initial operation once the project is complete and the entire drainage area is stabilized. !/ 6. A construction sequence that shows how the level spreader will be protected from sediment until the entire drainage area is stabilized. 7. The supporting calculations. '~ 8. A copy of the signed and notarized inspection and maintenance (I&M) agreement. ~! 9. A copy of the deed restriction. Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.2 Part III, page 1 of 1 ~. ~~ ' w :ay.a-ra ~`, ~ _..~" ;~ - ~< .,,,? ~ a ~~ - ~- °;