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HomeMy WebLinkAbout20070641 Ver 1_Application_20070410WITHERS ~ RAVENEL ENGINEERS I PLANNERS I SURVEYORS April 10, 2007 NC-Division of Water Quality Attn: Ms. Cyndi Karoly 2321 Crabtree Blvd. Raleigh, NC 27604 Re: Dunhill Tract Request for Buffer Compliance W8~R Project #:0206260.00 Dear Ms. Karloy, ,0 7 0 6 4 1 ~~~~~~ ~ ~ ~r,r~ ~ •~fk~t ~ y~` a r t.t~YL' 14t On behalf of Dunhill, LLC, we are requesting Buffer Compliance from the NC- DWQ for the installation of level spreaders and abio-retention basin. The subject property is approximately 28.67 acres in size and is located on the north side of Strickland Road (SR 1829), approximately 1800 feet east of the intersection of Strickland Road and Baileywick Road (SR 1830) at Latitude: 35.9085440°N and Longitude: 78.6955959°W, in Raleigh, Wake County, North Carolina. The site contains an unnamed tributary of Lower Barton Creek and is located in the Neuse River Basin. The Water Quality Classification for this feature is: "WS-IV; NSW", the Cataloging Unit for this site is: 03020201, and the Stream Index Number is: 27-16-(1). Project History Wetlands were delineated by Withers & Ravenel on December 23, 2005 and a pre-application meeting was conducted with the NC-DWQ on March 1, 2007 to discuss our stormwater design. Due to topographic constraints, Ms. Annette Lucas agreed that impacts to Zone 2 of the riparian buffer could not be avoided in order to install abio-retention device. Wetland impacts (0.06 acres) for lot fill were authorized as anon-reporting NWP 39 prior to the March 18, 2007 deadline. In addition, dam re-construction was authorized as a Maintenance activity (NWP3) and does not typically require prior approval from the USACE, as long as the existing use of the pond does not change and the impacts are necessary to meet current safety codes. Impacts for the dam re-habilitation include 33 linear feet of perennial stream channel and 0.012 acres of wetland. Proposed Impacts The proposed buffer impacts include 3,081 square feet (Zone 1: 1,216sf, Zone 2: 1,865sf) for the installation of level spreader by-pass swales and a bio retention basin. ii1 MacKenan Drive i Cary, North Carolina z75ii i tel: 919.469.3340 i fax: 919.467.6008 i www.withersravenel.com 107 Stokley Drive i Suite 104 i Wilmington, North Carolina z84o3 i tel: 91o.z56.9z77 i fax: 91o.z56•z584 Stormwater Management Plan Because this site is located in the Falls Lake secondary watershed protection overlay district, the City of Raleigh limits impervious area to no greater than 24%. Additionally, because 401-Certification is not required for this project, we do not believe that apre-approved stormwater management plan is required for this project. However, we are requesting approval from DWQ for impacts to the riparian buffer in order to construct the level spreader bypass swales and a bio- retention pond. Mitigation Because impacts to perennial channels are less than 150 linear feet and wetland impacts are less than 0.1 acres, we do not believe that mitigation should be required. The proposed activities within the buffer (i.e. level spreader construction) are an allowable activity, and therefore, do not require mitigation. Please feel free to call is you have questions or require additional information. Sincerely, WITHERS & RAVENEL, INC. ~~~. Todd Preuninger Director of Wetland and Biological Services Attachments: 1) PCN Form 2) USGS Quadrangle Map 3) Wake County Soil Survey 4) Site Plan 5) Agent Authorization 6) Level Spreader Operation and Maintenance Agreement 7) Bio Retention Operation and Maintenance Agreement 8) Level spreader and Bio-retention details 9) Executed DWQ Sample Deed Restriction form 10) Level spreader worksheets 1 1) Bio-retention worksheets Office Use Only: Form Version March 05 '0 7 0 6 4 1 USACE Action ID No. DWQ No. (If 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: NA 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 her ~ ~ ~ ~'~~ ..~ ~..F . `:~ II. Applicant Information Owner/Applicant Information ;,~~~~ fd1~T~;~ ~ut~t.4'lY Name: Dunhill, LLC Attn: Jeff Akin ~~iAb~~ tix~ s`r~,wlnY~R ~°' Mailing Address: P.O.Box 90783 Raleigh, NC 27675 Telephone Number: (919)-796-0297 Fax Number: 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: Todd Preuninger Company Affiliation: Withers & Ravenel Inc. Mailing Address: 114 MacKenan Drive Cary NC 27511 Telephone Number: (919)-469-3340 Fax Number: (9192-535-4545 E-mail Address: tpreuninger(a~withersravenel.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 maybe 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 project: Dunhill Subdivision 2. T.I.P. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN): 0798052606 4. Location County: Wake Nearest Town: Raleigh Subdivision name (include phase/lot number): Dunhill Directions to site (include road numbers/names, landmarks, etc.): The site is located on the north side of Strickland Road LSR 1829), approximately 1800 feet east of the intersection of Strickland Road and Baileywick Road (SR 1830 5. 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): 35.9085440 °N 78.6955959 °W 6. Property size (acres): 28.67 7. Name of nearest receiving body of water: UT Lower Barton Creek 8. River Basin: Neuse River Basin (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/maps/.) 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 site is currently wooded and contains one residential dwelling. Adjacent land use is residential. Page 2 of 8 10. Describe the overall project in detail, including the type of equipment to be used: The proposed project consists of the construction of a residential subdivision. Specifically, we will be installing roadways, re-habilitating an existing dam, and installing stormwater BMP's. Typical earthmoving etc uipment ,such as excavators and bull dozers will be used to prepare the site for construction. 11. Explain the purpose of the proposed work: The proposed project is intended to meet the growing demand for housing in the area. 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. Wetlands were delineated by Withers & Ravenel on December 23, 2005 and apre-application meeting was conducted with the NC-DWQ on March 1, 2007 to discuss our stormwater design. Due to topographic constraints, Ms. Annette Lucas agreed that impacts to Zone 2 of the riparian buffer could not be avoided in order to install a bio-retention device. Wetland impacts 0.06 acres) for lot fill were authorized as anon-reporting NWP 39 prior to the March 18, 2007 deadline. In addition, dam re-construction was authorized as a Maintenance activit~(NWP31 and does not typically require prior approval from the USACE, as lon ag_ s the existing use of the pond does not change and the impacts are necessary to meet current safety codes. Impacts for the dam re-habilitation include 33 linear feet of~erennial stream channel and 0.012 acres of wetland. 12. 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. None Anticipated 13. 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 Page 3 of 8 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. Provide a written description of the proposed impacts: The proposed impacts consist 3,081 square feet of riparian buffer impacts (Zone 1: 1,216sf, Zone 2: 1,865sfLfor the installation of a level spreader and bio retention basin. Please note that the proposed impacts do not require 401 Certification, they have been provided to the USACE as a non-reporting NWP 39 and the impacts associated with the dam re-habilitation are automatically authorized under NWP 3 and are considered and exempt activity with respect to the riparian buffer rules. 1. 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) NA NA NA NA NA NA Total Wetland Impact (acres) NA 2. List the total acreage (estimated) of all existing wetlands on the property: ~0.5 acres 3. 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 Stream Width Length Impact (indicate on ma) Intermittent? Before Im act (linear feet (acres) NA NA NA NA NA NA NA Total Stream Impact (by length and acreage) NA NA 4. 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) NA NA NA NA NA Total Open Water Impact (acres) NA 5. List t] ie cumulative im act to all Waters of the U.S. resultin from the ro'ect Stream Impact (acres): NA Wetland Impact (acres): NA Page 4 of 8 Open Water Impact (acres): NA Total Impact to Waters of the U.S. (acres) NA Total Stream Impact (linear feet): NA 6. Isolated Waters Do any isolated waters exist on the property? ^ Yes ®No 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. 7. 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 14. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It maybe 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. Impacts to the wetlands and stream channels were avoided to the maximum extent possible. In order to comply with current dam safety codes, impacts to a stream channel and wetland could not be avoided as part of the dam re-habilitation. Due to topographic constraints, impacts to the riparian buffer could not be avoided as part of our stormwater mana_eg ment plan. 15. 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 Page 5 of 8 mitigation as proposed. Examples of mitigation that maybe 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 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 USAGE 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/strmgide.html. 1. 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. Because impacts to perennial channels are less than 1501inear feet and wetland impacts are less than 0.1 acres, we do not believe that mitigation should be required. The proposed activities within the buffer (i.e. level spreader construction) are an allowable activity, and therefore, do not require miti .. at, 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://h2o.enr.state.nc.us/wrR/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): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): NA Amount ofNon-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA 16. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes ^ No Page 6 of 8 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 aNEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ^ No 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 17. 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 (Neuse), 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 Neuse )? 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. * Impact Required Zone , ~..,._o F o.~ Multiplier r,r...,..,+:~~ 1 1,216 3 (2 for Catawba) NA 2 1,865 1.5 NA Total I 3,081 I NA * Zone 1 extends out 30 feet perpendicular ftom the top of the near bank of channel; Zone 2 extends an additional 20 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. NA 18. 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. Because this site is located in the Falls Lake secondary watershed Page 7 of 8 protection overlay district, the City of Raleigh limits impervious area to no greater than 24% Additionally, because 401-Certification is not required for this project we do not believe that a pre-approved stormwater mana ement plan is required for this~roject However we are requesting_approval from DWO for impacts to the riparian buffer in order to construct the level spreader bypass swales and a bio-retention pond. 19. 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. Individual septic systems. 20. 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 21. 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: Much of the surrounding area has already been developed therefore we do not believe that this pro,L will lead to additional development or impact downstream water quality In order to protect downstream water quality the applicant will emplo t~ppropriate BMP's/erosion control measures during construction. 22. 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). ., / /D ~~ Applicant/Agent's Signature ~ Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) 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CONSTRUCTION ''~~ ', ~ / ~' ~ -' _ , P ~ _ r ~, ,. ,~ ~ 1 A ~ ~~~~,~ ," ~ o. _. ~~ ~ \ ~- _~ _ _~ _ ~ ,. s ~ . ? ~ ~ . ,` -~ - ~. \ :~ - ° ._ - - i ~ / 3 I 1 f f, ~ / ~' \ ~ " , LIMITS OF r ' " ~' ~~_ ~ _ I .. `, "t~~,,.t., f CONSTRUCTION - " /I ~ a 's, , ~- 2B ~ ~ ~ l y ~, ; # '< r ~ 1 ," 2A - ~ ~ ~ ~ ~ ~ `~ f _ 2 ~~ ,, _" ~',~ _ ,_ 1 _ ,~ ~ _t s~ LIMiTS OF ~_ ~ ~~ yS ~ 1(~ ~ _ ~ ~ ~" ~ ,, J~ 1 CONSTRUCTION` ~ O,L ~ 1 r ~ ~~ TREE ~~. `, _ ._ 1 1 ~ PROTECTION `" \ ~ ~° . ,- 1 ~ ~", ~ ~/ /'~ ~ ~/~l '~ ~ "I ~ ~". _ ~ ~ ~~" ~~ ~ ... ~ ..' ~ I i ~. 3 ~ ~ v • r ~, A -' ~i i _ __ -__ 1 Y .- ~~ IMPACT SUMMARY TABLE ~-1 IMPACT TYPE SF LINEAR FT. ~ f.:.~ ~"', ~.`~ ~ ,~Y~ ~ ~~' NO. (CH and WL) (CH only) ~ i~ ~'' ( ~~ GRAPHICAL SCALE 1A JW 2,464 SF N/A ) = 2A CH 125 SF 33 LF CH =CHANNEL L11Jl~ ~ ~ L~~I'' ~ ~ 50~ ~~Q~ 2B JW 541 SF N/A JW =JURISDICTIONAL WETLAND 3A Z1 654 SF N/A NB = NEUSE BUFFER ~ bYr}I I 38 Z2 1,487 SF N/A Zi = ZONEt rx't°il '1 k, ~' ~~ zz = zoNEZ ;~!~~~ ~'n ilrrra ~',.;~„; ° 1 inch = 50 ft. WITHERS RAV E N E~ ' FIGURE 1 -WETLAND AND BUFFER IMPACTS ~ DUNHILL -PHASE 1 m rnxK•~H, oma cz.y, no.m cmouoz vsn uc vas-ms-avm r,.: sism»ooe ..~w.•m~~.~~w.~om '~ RALEIGH WAKE COUNTY NORTH CAROLINA __ _ _ _I ~zs; zooz M~,~ c~os~os-ozso~oeozeo-P.n:m~e - n,~row„~t~Cq~~Mrc~osdvoo\Pnsa i co~nmouo~~w•n~a imwas~rn~~o-mw ae~ 4 7 0 6 4 1 .___, ~ _ -, __ _~ f + ~.. __ ., _ ~ ~ ' x - x - - .~ ~, X ,_. /' '. ~. 1' t r ,,' ~ ~ ~ -- ` „,- _~ _~ ; ,=,~',~. X13 ~~ ~ ~- _ _ ~' ,• - ~~ . a _ .. ,~ ,, :~ ~~< _ ,_ .rr. ~ ~, _ 'I 2 , - ~' ~ ~ . , .~ _. ._ ,.. ~. ,__ _ _ J ~~. ,- ____ ,-_. ,, _ , ,~ ~ y -- - ... _ -- ,_ ~ .._ r _ __ ` ~,' ~ _- -_ _ ~ i i ~ ~ ,' ~~ _. _ - ~ ~! ~ ~~ ~ ~_ ._ ~ ~, ~ 4,. ~ _ _ _ ~ ,~ ,; _, r ~ ~ ~,' ~ _, ~ , _ , ,~ ~ TREE. PROTECTION - ~. q 5= ._ ~. _ -, k ~. ..... - 4B - - -- ,ter ~' " ZONE 2 ~ 7 RB ~~~Y ~- ~ N ' ' ' ,-f- _ NFt6 Z -~~' ~, . ~` - ", f ;,-- ,-- ~~ ~ .-- ,, .,~ _~, ,~ r ,~._ , ,- ~.. ~, ,~ -~ ,D ~ ~a[r~ IMPACT SUMMARY TABLE ~f'F~ '~ ~~,~QI 22) EXISTING POND IMPACT TYPE SF LINEAR FT. NO. ICH and wU ICH only) cH = CHANNEL GRAPHICAL SCALE 4A Zl 562 SF N/A JW -JURISDICTIONAL WETLP~t! app; NB = NEUSE BUFFER raa„ a:3r O r r 5O ~ OO 4B Z2 378 SF N/A Zt = ZoNE1 22 = Z0NE2 1 inch = 50 ft. WITHERS RAV E N E L FIGURE 2 -WETLAND AND BUFFER IMPACTS DUNHILL -PHASE 1 ttl MxKenan Drive Cary. NOM GaroNna Y]5n lel: 9ls- aes-xuo ~a.: 5ts-m]-0WB www,witnersravenel.com RALEIGH WAKE COUNTY NORTH CAROLINA oeaevw;~k~cnct~M~~rostano~~an.sa t coeswc~oe~weaar~a imoens~ra~~a-z.aa~ WITHERS L`~ RAVEN EL ENGINEERS I PLANNERS I sURVEYf3P,$ Q 1 y © ~Y T Site Access/Agent Authorization Form Project Name: ~Un~\~~~ 5 (~~Lr V Property Owner/Contract Purchaser: ~C.,'c~ ~t1\c~ ,~i ~~.~~,~ Ll-.~..> Address: ~~ ~X ~LI~l~S3 ~~u.,~~, ~ ~L 2~1 ~~5 Phone: ~~'~> 'l~t(o-bZ~-l Fax: \cl~`1~ ~Sy~ -3~y ~ Email: I hereby grant Withers and Ravenel, INC permission to conduct environmental studies on the property described above. In addition, I authorize Withers and Ravenel to act on my behalf as my agent when conducting site meetings and/or correspondence (i.e. permit applications etc.) with the USACE and the NC -Division of Water Quality, if necessary. Property Owner: Date: ~ =3-01 (Print Name) (Signatu ~ ~ ~ ~i ~ ~} LEVEL SPREADER OPERATION AND MAINTENANCE AGREEMENT The level spreader is defined as an elongated, level threshold, designed to diffuse stormwater runoff. Maintenance activities shall be performed as follows: 1. After construction and until vegetation has been established, level spreader(s) shall be inspected after every rainfall. Thereafter, level spreader(s) shall be inspected at least every month and more frequently during the fall season and after heavy rainfall events: a. Accumulated sediment, leaves, and trash shall be removed, and repairs made if required. b. Inspect level spreader(s) for evidence of scour, undercutting, settlement of the structure, and concentrated flows downhill from the level spreader(s). c. A level elevation shall be maintained across the entire flow-spreading structure at all times. Repair or replace the level spreader if it is damaged. d. Mow vegetative cover to a height of six (6) inches and prune plants if they cover over half of the level spreader surface. e. Repair eroded areas and replace/replant dead or damaged vegetation. 1. 2. The contractor should avoid the placement of any material on and prevent construction traffic across the structure. If the measure is damaged by construction traffic, it shall be repaired immediately. 2. 3. Inspect and repair the collection system (e.g., catch basins, pipes, swales, riprap) four (4) times a year to maintain proper functioning. I acknowledge and agree by my signature below that I am responsible for the performance of the 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: ~~~ ~~~~ Title: ~W ~~ ~ ~~~1 _ „ _ Address: Qv, 4olr; `~~-183 ~~e.~~~ ~~ ~7L~ Phone: ~ct 1°1~ "1 ~ to -O2~'j Signature: ~~~ Date: ~_.3` o~ Note: The legally responsible party should not be a homeowners association unless more than 50°~ of the lots have been sold and a resident of the subdivision has been named the president. 1. ~~ ~ a Nota Public for the State of ry ~. ,County of l , do hereby certify that personally appeared before me this day of , _,~, and acknowledge the due execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and official seal, ~~~~`' Ann pe ~~i ~~ ~ ~~ Asi ~ °mm~~OO = i~ ~~ ~ Noto.` `"~ • ~' ~ ~ ® A ~ l I ~~~C C • \ ~ ~~i OG ~~6/U 7 ~~ ~~~ SEAL My commission expires Page 1 of 1 /® ~~ ~ BIO RETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The bio retention basin system is defined as the basin, pretreatment including forebays underdrains, and the bypass outlet pipe. Maintenance activities shall be performed as follows: After every significant runoff producing rainfall event and at least monthly: a. Inspect the bio retention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. If the basin does not drain within 2 days, check and clear the underdrain of any obstructions such that drawdown of the temporary pool occurs within 2 days as designed. 2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, mow grass cover to maintain a maximum height of six inches, otherwise maintain specified vegetation as required, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the bio retention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a bio retention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the maximum temporary pool depth on the surface of the bio-retention area reads 0.25 feet, the sediment shall be removed. 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. Basin planting density shall be maintained at all times, revegetate as needed to comply with original design drawing specifications. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. 7. All components of the bio retention basin system shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the seven 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: ~e_~ ~~ icy Title: _ ©~~ (Mszrv~~p.Q,r` Address: ps? ~~X ~lCs/ ~3 1~.~+~°~~n ~ ~LZ.? X75 Phone: ~°~ l~l>-7 ~(o - 02"1 Signatu Date: U ~ ~ ~-~-0"] Pave 1 of 7. Note: The legally responsible party should not be a homeowners association unless more than 50% of the is have been Id and a resident of the subdivision has been named the president. I, , a Notary P is for the State of ~ C---' County of , do hereby certify that personally appeared before me this _~_ day of ,~~' and acknowledge the due execution of the forgoing bio retention basin maintenance requirements. Witness my hand and official seal, ``````,~~NtA^ri ~p~''' ~` ~ ,~GomMy4~~9~~~ii h0 `(r Noy °~ 1 . m ~` ~ o ~ ~. ' G l° ~~O O: SEAL My commission expires ~c~ "'o~-~o -' d Pave 7 of 2 ~ ~ '~ ~ ~ 1 Date: ~ ~ `~ ~~ COMPLIANCE WITH WETLAND 8~ BUFFER REGULATIONS In accordance with Title 15 A NCAC 2H .0500, the following DEED NOTIFICATION shall be recorded in the W~-~-- County Registry prior to the conveyance of lots. Said Deed Notification shall apply to name of subdivision, lot numbers in l~-~w~SL County, North Carolina as shown o plans titled ~vr~~;•~\ (insert subdivision name) prepared by, W;k~S ~ ~,.ve~R.~ (insert name of designer) dated date: I~o~.\ Zao-j "A portion of this lot has been determined to meet the requirements for designation as a wetland, stream or protected stream buffer. Any subsequent fill or alteration of this area shall conform to the requirements of the state rules adopted by the State of North Carolina in force at the time of the proposed alteration. The intent of this provision is to prevent additional wetland, stream or buffer filling or draining, so the property owner should not assume that a future application for filling or draining would be approved. The property owner shall report the name of the subdivision in any application pertaining to said rules. This covenant is intended to ensure continued compliance with all rules adopted by the State of North Carolina and therefore the State of North Carolina may enforce benefits. This covenant is to run with the land and shall be binding on all Parties and all persons claiming under them". Signature: .7-e• ~' ~K~~ Owner's name: ~n~~~\ (---t--~-- Address: ~~• ~ X ~~ l~__$--3 City, State, Zip Code: ~~1~ I~~- ~-~ ~75 Phone Number: ~~ «~ ~ `r'r -3 ~ 4" STATE OF N rth Carolina ~~ ~~ COUNTY I, /~~ ~ H ~ C ~C ~ , a Notary Public of the State of North Carolina, ~U~ ounty, hereby certify that owner personally appeared before me this day and executed by above certification. Witness my hand and notorial seal, this `~ day of ~ ~ , v~~U~ ~ t~ 3 Notary Public ~ 9 ~~ ~~~'~~ ~y My commission expires: °.,,=°9B