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HomeMy WebLinkAboutSW7040826_CURRENT PERMIT_20041214STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW7c/E'CJ�i ip DOC TYPE URRENT PERMIT rAPPROVED PLANS ❑ HISTORICAL FILE DOC DATE �l�`y YYYYMMDD NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Michael F. Easley, Governor DIVISION OF WATER QUALITY December 14, 2004 Cutty Sark, LLC Attn: Mr. Mike Atkinson PO Box 745 Hatteras, NC 2794.3 Dear Mr. Atkinson: William G. Ross, Jr., Secretary Alan W. Klimek, P.E., Director Subject: Stormwater Permit No. SW7040826 Cutty Sark Subdivision High Density Stormwater Project' Dare County The Washington Regional Office received your completed Stormwater Application for the subject project on November 22, 2004. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7040826 dated December 14, 2004 to Cutty Sark, LLC. This permit shall be effective from the date of issuance until December 14, 2014 and shall be subject to the' conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of. the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina, General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. 943 Washington Square Mall, Washington, North Carolina 27889 Phone: 252-946-6481 / FAX: 252-946-9215 / Internet h2o.enrstate.nc.us An Equal Opportunity/Affirmative Action Pmployer — 50% Recycledlt0% Post consumer Paper One NsotthCarofina Awmally Cutty Sark, LLC December 14, 2004 Page Two If you, have any questions, or need additional 'information concerning this matter, please contact me at (252)-948-3919. Sincerely, William J. ore Environmental Engineer Washington Regional Office cc: House Engineering. Dare County Planning/Inspections Washington Regional Office Central Files IV, {{- o A State Stormwater Management Systems Permit No_ SW7040826 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE_STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, -and Regulations PERMISSION IS HEREBY GRANTED TO Cutty Sark, LLC Dare County FOR THE construction, operation and maintenance of stormwater management systems in compliance with the provisions of 15A NCAC 2H.1000 (hereafter referred to as the "stormwater rules") and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit for an infiltration system to serve the Cutty Sark Subdivision located at Avon, NC. This permit shall be effective from the date of issuance until December-14, 2014 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume -of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described on page 4 of this permit, the Project Data Sheet. 3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 3 DIVISION OF WATER QUALITY PROJECT DATA Project Name: Permit Number: Location: Applicant: Mailing Address: Application Date: Receiving Stream: Classification of Water Body: Total Site Area: Total Impervious Surfaces Allowed: Basin Depths: Required Surface Area ( SA/DA) : Provided Surface Area: Required Storage -Volume: (based on 1.5-inches) Provided Storage Volume: (actual above ground storage) Controlling Orifice: 4 Cutty Sark Subdivision SW7040826 Dare County Cutty Sark, LLC PO Box 745 Hatteras, NC 27943 08/31/04; original- 11/22/04; complete UT -Pamlico Sound SA 9.66 acres 2.66 acres 1.0 ft N/A 17,952 sf - primary swales 11,080 sf - property line swales 15-1I 780 cf 22,300 cf rip -rap overflow outlets set at elev. 4.7 ft. 4. No homeowner/lot owner/developer shall be allowed to fill in,, alter, or pipe any vegetative practices (such as swales) shown on the .approved plans as part of the stormwater management system without submitting a revision to the permit and receiving approval from the Division. S. The following items will require a modification to the permit: a. Any revision to the approved plans, regardless of size b. Project name change C. Change of ownership d. Redesign or addition to the approved amount of built -upon .area e. Further subdivision of the project area. In addition, the Director may determine that other revisions to the project should .require a modification to the permit. 6. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit.; Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. II. SCHEDULE OF COMPLIANCE 1. The permittee will comply with the following schedule for construction and maintenance of the stormwater management system. a. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surfaces except roads. b. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired .immediately. 2. The facilities must be properly maintained and operated at all times. The approved Operation and Maintenance Plan must be followed in.its entirety and maintenance must occur at the scheduled intervals. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency including, but not limited to: 5 a. Semi-annual scheduled inspections (every 6 months) b. Sediment removal C. Mowing and revegetation of side slopes d. Immediate repair of eroded areas e. Maintenance of side slopes in accordance with approved plans and specifications f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping. 4. Records of maintenance .activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken.' 5. This permit shall become. voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data 6. Upon completion of construction and prior to operation of this permitted facility, a certification must be received from an appropriate designer for -the' system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Mail the Certification to the Washington Regional Office, 943 Washington Square Mall, Washington, North Carolina, 27889, attention Division of Water Quality. 7. A copy of the approved. plans and specifications shall be maintained on file by the. Permittee for a minimum of five years from the date of the completion of construction. III. GENERAL CONDITIONS 1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality accompanied by an application fee, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. 2. Failure to abide by the conditions and limitations.contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.E(a) to 143-215.6(c). C 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective. action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. Permit issued this the 14 th day of December, 2004. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Alan W. KlimW,, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW7040826 7 Stormwater Permit No. SW7040826 Cutty Sark Subdivision Avon, NC Infiltration System Designer's Certification as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, (Project) for (Project Owner) hereby state that to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. Signature Registration Number Date I 0►'"�. 8�3//04-- /�EV15� /9F.� D�it�iC. Ge»�/9EN75 OFFICE USE ONLY Elate Received Fee Paid Permit Number 004 %V 7-6 1 DWQ-W State of North Carolina 9.►V11 1�11 rtment of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This Form Wray be photocopied for use as ari original I. GENERAL INFORMATION 1. Applicants natne (specify the nanie of the corporation, individual, etc. who owns the project): 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): 3. Mailing Address ['or person listed in item 2 above: -F/fin-.__7_g 5 City:_J--/A rTC/tiAS State:._ C zip:-7-7-2 "Telephone Number: _(_Z_J Z. ) �'C 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): 641r1-Y 5A.4r_ S /)/U/S/C•AJ 5. Local ion of Project (street address): City: A (10,A-) Cou11ty:_/)4/i6 6. Directions to project (front dearest major intersection): C. 1 I AO— S ! z s 7 GC F k ��1 ArvFy] 7. Latitude:- G Z / 3G /1 /V Longitude: � �� !(} of project S. Contact person who can answer questions about the project: Name: �►G/`C CsL�S� TelephoneNutnber: 2(_ 5 -_) 26I " Jr 3 I1, PERMIT INFORMATION: 1. Specify whether project is (check one) _A_New Form SWU-101 Version 3.99 Page I of4 Renewal —X—Modirication 7 2. If this application is being submitted as the result of a renewal or modification to all existing permit, list the existing permit number XA and its issue date (if known) 3. Specify the type of project (cheek one): Low Density &_High Density Redevelop General Permit Other 4. Additional Project Requirements (clieck applicable blanks): �CAMA Major _X-Sedimentation/Erosion Control _404/401 Permit ____-NPDI;S Stormwater Information on required state permits can be obtained by contacting the Custotner Service Center at 1-877-623-6748. III. PROJECT INFORMATION I. In the space provided below, sunirnarize how storrnwater will be treated. Also attach a detailed narrative (one to two pages) describing storrnwater rrranagement for the project. trL._.1._NFILT�� GA/t SAN/J G2c�,�t <<�►r-��- s.Aar G�rv�. Rc,nasJa� i_F> ,feu- 3; �� E scs,�,gc�tNoaar SwAcFs 2. Slorrnwater rurrol'l' from tlris project cir-aitis to the Diver basin. HAUC `t: / Ipf� 5{doff 3. Total Project Area:._9,_6C - - acres 4. Project Built Upon Area: 3 o%, 5. I -low many drainage areas dues the project have? Z 6. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. Basin Infor►nation Drainage Area I Drainage Area 2 Receiving Stream Name �' _ � LiG_U 5rr ✓AJ0 Receiving Stream Class S Drainage Area �, �G�oEc� Z, g Existing Impervious* Area Z — Proposed Impervious*Area 'S /0 % — -� Impervious* Area (total) mB�/v EA -T 7A-1, 3o % hitpervious# Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings Pjri S'Ijig r 1 On-sitc. Sireets On -site Parking r On -site Sidewalks — a — Other on -site -- Q --- Ofi--site Total: %�j P !7 5r 'Total: r Impervious area is denied as tale built upon area including, but trot limited to, buildings, roads, parking arras, side►valks, gravel areas, etc. Form SWU-101 Version 3.99 Page 2 of 4 7. How was the off -site impervious area listed above derived? IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS The following italicized deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to (lie sale of any lot. If lot sizes vary significantly, a table listing each lot number, size arid tine allowable built -upon area for each lot must be provided as an attachnient. 1. The following covenants are intended to ensure ongoing compliance Witt? state storrnwater management permit number as issued by the Division of Water Quality. These covenants may not he changed or deleted without the conser the State. 3 �Yo Go ✓Ei t� 2. No more than Ir96&�L-� s�. feet of any lot shall he covered by structures or impervious materials. Impervious materials include, asphalt, gravel, concrete, brick, stone, slate or similar material but do riot include wood decking or the water surface of swimming pools. 3. Swales sl?all not he filled in, piped, or allerled except as necessary to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires a state storrnwater inanageruent permit modification prior- to construction. 5. All permitted runoff Irvin outparcels or future development shall be directed into the permitted storrnwater control .system. 771ese connections to the store?water control system shall be performed hi a manner that maintains tire, integrity and performance of the system as permitted. Byyour signature below, you certily that the recorded deed restrictions and protective covenants for this project shall include all [tie applicable items required above, that the covenants will be binding on all parties and persons claiming under then?, that they will run with the ]and, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Form SWU-102 Wet Detention Basin Supplement. Form SWU-103 Infiltration Basin Supplcrtten[ Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Forrn SWU-106 Off-Si[e System SuplAerrrent Form SWU-107 Underground Infiltration "french Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-10 t Version 3.99 Page 3 of el VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be submitted to the appropriate DWQ Reglonal Office. I. Please indicate Thal you have provided the following required lnforinatloii by initlaiing in the space provided next to each item. • Original and one copy or the Stormwater Management Permit Application Forni • One copy of Cite applicable Supplement j<ornti(s) for each BMP • Permit application processing fee of $4Z0 (payable to NCDENI?) • Detailed narrative description or stormwater treahilent/management • Two copies of plans and specifications, Including: 17eve1opmen, roject name - Engineer and firni _ Legend North arrow Scale Revision nuniber & date - Mean high water line Dimensioned property/project boundary Location map with maned streets or NCSR numbers Original contours, proposed contours, spot elevations, finished floor elevations Details of roads, drainage features, collection systems, and storinwaler control measures Wetlands delineated, or a note on plans that Rolle exist l;xisting drainage (Including off -site), drainage easements, pipe sizes, runoff calculations Drainage areas delineated Vegetated buffers (where reclulred) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or Ilan so that they may provide information on your behalf, please complete this section.SLR aj� Designated agent (individual or firm): got) 4lIvE Mailing Address:^PD 64ax Yf 6-%� _ City: X, T7r� % State: �U Zip: Z7 9f�9 Phone: (_ ?3 _ _ iziax. ��rZ- .. Z&_�_'_� Viil. APPLICANT'S CERTIFICATION 1, (print or type naine ofperson 11sted in General lnfornation, Ron L) M 19'6- +rK11V 5,9 Y certify that the h}ioruation included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with [lie approved plans, that the required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A NCAC 21-1 .1000. Signature: _ Date: 2` Form S WU-101 Version 3.99 Page 4 of it &*ep Poe, � �s Permit No. (to be provided by Ulf'Q) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FRECEIVED INFILTRATION BASIN SUPPLEMENT NOV 2 2 2004 77tis form may bep1101ocopied for use as an original DWQ Stormwater Management Plan Review: DWQ-WARO A complete Stormwater management plan submittal includes a stormwatcr management permit application, an infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all Stormwater conveyances and system details. 1. PROJECT INFORMA`l'ION Project Name : Cwrr Y SAAK , StAe 0 ► u I S I c) ),j Contact Person: R I C, r. -"AE C Phone Number: (152-) eqL l - `t Xj' 3 This worlcsllcct applies to: Basin No. _ w in Drainage Area 1 (as• ideirlified Oil plans) Y;won Form SII'U-101) 11, DESIGN INFORMATION - Attach supporting calculations/documeiltation. The soils report must be based upon an actual field investigation and soil borings. County soil maps arc not an acceptable source of soils information. All elevations shall be in lect mean sea level (fins,). Soils Report Summary Soil Type Infiltration hate SHWT Elevation Basin Design Parameters Design Storm Design VOI11111C Drawdown Time Basin Dimensions SF- SM (GoROLLA d- (AC'fCSIG✓v jC-AjCS' SAN&7S) lr_jc, r=Ss of d_Q indir Or cf/hr/sf (circle appropriate imits) , 7 finsl (Seasonal Nigh Il'uter Table elevation) 5 iIlcll (1,5 inch ei erNJar SA xaters, 1 inch e�°enl filr others) days Basin Size ' ft. x 22 y'l� ft. = Basin Volume Provided 00 c.f. -5-groFeA4t~ V 0 1 p TbR� Basin Elevations Bottom Elevation 'r� fillsl Storage Elevation + r-7 linsl Top Elevation r " fins, sq. 11. (bottom (lirnerisions) N0.r i A)4 L EIV 1570 9 rv' A-C. 5_rm/'-+rC_ Form SWU-103 Rev 3.99 Page ] of 3 �-��r,� i � ��� i. �_ ...� t":rf� �� i.y ^.!t r_r+ c..t c^� e� 4 r1 r r� 'fir �� .� ti"; III. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwatcr Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 21-1 .1008. initial in the space provided to indicate that the following design requirements have been met and supporting documentation is attached. if the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. Attach justification if a requirement has not been niet. Applicants Initials a. System is located 50 feet from class SA waters and 30 feet from other surface waters. g ll System is located at least 100 feet from water supply wells. Bottom of' system is at least 2 feet above the seasonal high water table. Bottom of the system is 3 fect above any bedrock or Impervious soil horizon. System is not sited on or in fill material or DWQ approval has been obtained. System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access casements to the nearest public right-of-way. Drainage area for the device is less than 5 acres. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is attached. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event for areas draining to SA waters ). Design volume and infiltration calculations attached. j. System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage. Calculations attached. k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (1-I: V). 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment trap is provided. Ill. Bottom of the device is covered with a layer of clean sand to an average depth o1-4 inches or dense vegetative cover is provided. n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimum length is 50 Icet for SA waters, 30 feet for other waters). o. Flow distribution mechanism within the basin is provided. l/ P. A benchmark is provided to determine the sediment accumulation in the pretreatment device. A21A- q. Runoff in excess of the design volunic bypasses off-line systems (bypass detail provided). r. System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days. A soils report and all pertinent draw -down calculations are attached. 61-/ s. Plans ensure that the Installed System will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized. Form SWU-103 Rev 3.99 Page 2 of 3 IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT 1. After every runoff producing rainfall event and ,it least monthly inspect the nlltltratlon system for erosion, trash accumulation, vegetative cover, rind general condition. 2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, rilow vegetated cover to maintain a maximum height of six inches, and remove trash as needed. 3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow structures for blockage and deterioration. Remove any blockage and repair the structure to approved design specifications. 4. Remove accumulated sediment From the pretreatment system and infiltration basin annually or when depth in the pretreatment unit is reduced to 751/r of the original design depth. The system shall be restored to.the original design depth without over -excavating. Over -excavating may enuse the required water table separation to be reduced and may compromise the ability of the system to perform as designed. Removed sediment shall be disposed of In an appropriate manner and shall not be handled in a 1llanner that will adversely impact water quality (Ix. stockpiling near a stornlwatcr treatment device or stream, etc.). A benchmark shall be established in the pretreatment unit. The benchmarywill (i unlent the original design depth so that accurate sediment accumulation readings call be taker A ie lie wring device used to determine the depth at the benchmark shall be such that it will give an acutrat i i ading atnd not readily penetrate into accumulated sediments. When the design depth reads 0--15 feet in the-p e��3fi4-,the sc'tliflvnt shall he removed feom both the{31.1 a ertl�u It-nr► it t -lifl tr. 5. if the Division determines that the system is failing, the system will inlmedf et e repaired to original design specifications. If the system cannot be repaired to perform its design function, other stormwater control devices as allowed by NCAC 21-1 .1000 must be designed, approved and constructed. 1 acknowledge and agree by my signature below that I am responsible for the performance of the five maintenance procedures listed above. 1 agree to notify DWQ of any problems with file system or prior to any changes to the system or responsible party. Print Name and Title: - \� _try-�lt�r�a i/1 ��t-•- e Address:�PV C. 13lione;2- C-D Date: ~- 0 -Ca Signature: { Note: The legally resporrsd parts, shl¢nld trod be a honreowners association unless more than 50% of the lots haiv been sold and a resident of dh{e�subdit,ion lru.. J.�Jen name(f the president. ram,,' ` /Public ,, far the State ot�4 or \ `�`+`� L LeCeGuuty o6 I_ t , dZJ o hereby certify that t�� �� '� personally appeared before we this �r 1 day of ay 0tnd acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Wittsess-uly hand ar.t�t� �rS,�a1 seal, CGjY-�ri-�. ] ,Q •.H�c SEAL G,'•� ' � r1 _ NO rAR •�� • P i-IG Form SWN- %--Jte, 3.99 ,•' "''.17IN�r i�rr' ,N iviy commission expires l [" 0 1� —O-S Page 3 of 3 DIVISION OF COASTAL MANAGEMENT FIELD INVESTIGATION REPORT APPLICANT'S NAME: Cutty, Sark Development Corp. PROJECT NAME: Cutty Sark Subdivision - Modification, CAMA Major Permit No. 20-96 2 - LOCATION OF PROJECT SITE: West of NC 12, south of Hatteras Colony Subdivision, Cutty Sark Drive, Avon, Dare County, man-made canal to the Pamlico Sound. Photo Index - 2000: 174-2040, J-12; 1995: 174-1784, J-19. State Plane Coordinates, X: 3041800 Y: 605000 3. INVESTIGATION TYPE: CAMA 1 D&F 4. INVESTIGATIVE PROCEDURE: Date of Site Visit - May 25, 2004 Was Applicant Present - Yes 5. PROCESSING PROCEDURE: Application Received Complete - June 15, 2004 Office - Elizabeth City 6. SITE DESCRIPTION: (A) Local Land Use Plan - Dare County Land Classification From LUP - Conservation (B) AEC(s) Involved: Public Trust Area, Estuarine Waters, Coastal Shoreline, Coastal Wetlands (C) Water -Dependent: Yes (D) Intended Use: Private / Property Owners and Guests (E) Wastewater Treatment: Existing - none; Planned - individual lots, septic tanks/drain fields (F) Type of Structures: Existing - 500 linear feet of bulkhead; Planned - 251-feet bulkhead, boat ramp with gravel drive, vehicular access, and 32-feet by 3-feet courtesy dock adjacent to boat ramp. (G) Estimated Annual Rate of Erosion: 0.25 feet Source - Applicant 7, HABITAT IMPACT DESCRIPTION: [AREA] EXCAVATED FILLED/DISTURBED SHADED (A) Coastal Wetlands (B) Estuarine Waters / Shallow Water Habitat 220 sq. ft. 81 sq. ft. (C) Upland 57,930 sq. ft. (D) Total Area Disturbed: (E) Primary Nursery Area: (F) Water Classification: 58,150 sq. ft. (1.335 acres) No SA; Open: No 8. PROJECT SUMMARY: This project involves bulkhead shoreline stabilization, a boat ramp with a gravel drive, and courtesy dock along the shoreline of a man-made canal to the Pamlico Sound in the Cutty Sark Subdivision, located in the Village of Avon, in Dare County. FIELD INVESTIGATION REPORT { Cutty Sark Development Corp.; Modification, CAMA Major Permit No. 20-96 Page 2 Project Setting The application site is located in the Cutty Sark Subdivision in the Village of Avon, in Dare County. The Subdivision consists of 18, approximately one-half acre lots. The Subdivision includes approximately 1,400 feet of canal -front shoreline. Approximately 750 feet of shoreline is located along a canal that extends from north to south, while the remainder of shoreline is part of a smaller canal (m6re ditch -like) that joins with the north part of the larger canal and extends east to west. CAMA General Permit No. 36574-A authorized the construction of 500 feet of bulkhead along an upland portion of the canal, and was recently completed. CAMA Major Permit No. 20-96 was previously issued (and is current) for canal maintenance excavation related to this site. Although not technically part of the Cutty Sark Subdivision, one residence has been constructed (prior to -the creation of the subdivision) under the ownership of Wallace Beckham, partner in the Cutty Sark Development Corp. and is located on the site. CAMA Minor Permit No. 2004-55 was recently issued by Dare County to authorize the construction of a 76-feet long retaining wall adjacent to the Beckham residence to stabilize a portion of shoreline, landward of existing wetlands. Since the Subdivision will require the installation of road improvements and overall site- grading, Stormwater and Sedimentation and Erosion Control authorizations have been issued for this work to the-Cutty Sark Development Corp. The upland area of the site is approximately 3 to 4 feet above the Normal Water Level (NWL.) The land surface consists of sand covered with Spartina patens and scrub grasses and shrubs. The majority of the canal shoreline is vegetated with this same mix of plants. The site shoreline includes approximately 750 feet of shoreline (500 feet has recently been stabilized with bulkhead, as referenced above). Approximately 550 feet of the remaining shoreline is vegetated with a fringe of coastal and/or freshwater-404 wetlands. Coastal wetland species include Juncus roemerianus and Spartina alterniflora. Approximately 90 feet of the footage is located along the main canal and this portion of the fringe is between 2 and 5 feet in width. Some Juncus roemerianus is located along this portion of shoreline but is landward of where identified jurisdictional coastal wetlands have been delineated. Evidence of shoreline erosion exists along the remaining un-stabilized portions of the shoreline of the canal. Portions of this shoreline are being undercut and have eroded, resulting in some clumps of existing vegetation washing off into the canal. The rear portion of the existing residence is within 25 feet of the erosion escarpment. The main canal width is approximately 40 feet. The water depths within the main canal are an average of 5 feet. Water depths two feet offshore are approximately 2 to 3 feet in depth. The canal bottom consists predominately of sand with little, or no visible organic material. No significant FIELD INVESTIGATION REPORT Cutty Sara Development Corp.; Modification, CAMA Major Permit No. 20-96 Page 3 areas of submerged aquatic vegetation were observed along the shoreline during the application site visit. The waters of this canal carry the same classification as the Pamlico Sound. The North Carolina Environmental Management Commission has designated these waters as `SA' waters (suitable for shellfish propagation and harvesting); however, the waters in this vicinity are closed to the commercial harvest of shellfish. During the site investigation visit, no shellfish were observed along the water bottom in the vicinity of this project. Some juvenile finfish were observed along the shoreline. The Coastal Resources Commission (CRC) has designated these waters as Public Trust Area and Estuarine Water Areas of Environmental Concern (AEC). In addition, under the designation of the CRC, the Coastal Shoreline AEC extends in a contour 75 feet landward of the NWL. The CRC has also designated coastal wetland vegetated areas, like the one described above, as a Coastal Wetland AEC. The North Carolina Marine Fisheries and Wildlife Resources Commissions classify the waters of the Pamlico Sound as Coastal Waters. Project Description The applicant proposes to stabilize the remaining portion of shoreline along the southeth-most portion of the main canal with vinyl bulkhead. The bulkhead alignment is proposed directly adjacent to -the -escarpment, at or near the NWL. This bulkhead will extend approximately 120 feet -to the -south where the boat ramp will be constructed,'then continue an additional 107 feet to the south, and include a 10-feet long return wall. A second bulkhead section is proposed at the north end of the main canal at the rear of the existing residence, and will extend approximately 144 feet to the north. This portion of bulkhead will connect to the above referenced retaining wall that will be placed between the existing coastal wetland fringe and the upland in this area behind the Beckham residence. Both proposed bulkhead sections will connect to the existing bulkhead structure. Both sections will be located approximately at the NWL, and neither structure will result in any fill of vegetated wetlands. The deadmenlbackfill tieback area -will extend landward approximately 15 feet to the east and will be backfilled with clean sand/fill material, some of which is currently available on - site from previous maintenance excavation work. The application also includes a proposal to construct a 10-feet wide concrete boat ramp with a 3- feet wide courtesy dock along the north side of the ramp. The overall ramp length will be 40 feet, and the ramp will extend approximately 5 feet beyond the proposed bulkhead alignment into the canal. It is. estimated the ramp will extend about 22 feet beyond the NWL. Eighteen feet of the ramp will be -above the NWL. A 10-feet wide by approximately 200-feet gravel drive will connect the proposed ramp -to the adjacent asphalt road (Cutty Sark Drive). This drive will be located along a 15-feet wide common easement. No parking area is proposed. Since the ramp facility is proposed for the subdivision, it is anticipated that the parking will be limited to the individual on- FIELD INVESTIGATION REPORT Cutty Sark Development Corp.; Modification, CAMA Major Permit No. 20--96 Page 4 site lots in the subdivision. The proposed courtesy dock will extend 8 feet beyond the proposed bulkhead alignment, and will shade an area of approximately 27 feet by 3 feet, most of this area will be within the `basin' portion of the ramp structure. The structure will be a total length of 32 feet and will not extend beyond one-fourth of the canal width. The applicant expects, between the bulkhead construction and the general Iot grading, that the entire Estuarine Shoreline -(75-feet contour) will'be graded and has estimated that a total of 57,930- square feet of upland area will be disturbed in this process. Anticipated Impacts • The proposed bulkhead alignment will approximate the NWL and will result -in the filling of little or no Estuarine Waters and Public Trust Area. • The bulkhead alignment will not result in. the filling of any wetlands. • Since water depths close to the shoreline are 2 to 3 feet in depth, and the proposed alignment is to approximate the NWL, the alignment of the bulkhead structure should -not significantly alter the shallow'water habitat bottom adjacent to the existing shoreline. • The boat ramp will result in the filling of 220 square feet of water beyond the NWL, although only about 50 to 60 square feet of area is beyond the proposed bulkhead alignment. • The boat ramp structure will not result in the excavation or filling of any wetlands. • The proposed ramp and access drive will result in approximately 2,000 square feet of impervious area. Approximately 400 square feet will be within the Estuarine Shoreline of the Pamlico Sound. • The overall land disturbance within the Estuarine Shoreline, associated with the tieback area and site grading is estimated to be 57,930 square feet. • An inspection of mapping data on cultural resources revealed that no archaeological or cultural resource findings had been recorded on the available maps in the immediate vicinity of this project. However, these maps have not been updated in at least 10-years and the potential for the existence of cultural or historical resources is possible. • The proposed shoreline stabilization structure and filling activity will result in a temporary increase in turbidity levels along this portion of this waterway, and 'possibly within other off -site drainage areas. The proposed structure will reduce the erosion of the shoreline of FIELD INVESTIGATION REPORT Cutty Sark Development Corp.; Modification, CAMA Major Permit No. 20-96 Page 5 this lot, and in turn reduce the long-term turbidity associated with un-stabilized shorelines. • This project's bulkhead and retaining wall alignment location has been planned to avoid filling of any wetlands. • The proposed boat ramp and courtesy dock will not interfere with any (adjacent) riparian access, public trust, or navigational concerns along this canal. Submitted by: Dennis W. Hawthorn Date: July 15, 2004