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HomeMy WebLinkAboutSW8010903_CURRENT PERMIT_20040622STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT. NO. SW DOC TYPE � CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD Michael F. Easley, Governor O�OF W A r�R0. William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E.,Director Division of Water Quality Coleen H. Sullins, Deputy Director Division of Water Quality June 22, 2004 Mr. Mark Simpson, Member Manager Palm Beach Development Group, LLC 419 Marina Street Carolina Beach, NC 28428 Subject: Stormwater Permit No. SW8 010903 Modification The Palms at Dunhill High Density Project New Hanover County Dear Mr. Simpson: The Wilmington Regional Office received a complete Stormwater Management Permit Application for The Palms at Dunhill on June 16, 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 21-11.1000. We are forwarding Permit No. SW8 010903 dated June 22, 2004, for the construction of the subject project. This permit shall be effective from the date of issuance until June 22, 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. The original plans dated August 9, 2001 and last revised on November 5, 2001 along with the current plans dated August 29, 2003 and last revised on June 15, 2004 are incorporated into this permit by reference. The existing 65 room hotel site will remain unchanged except for the addition of the driveway to the south. The following changes were made to this permit: 1. The facility name was changed to The Palms at Dunhill versus Amerihost Inn & Suites. 2. The mailing address of the owner changed to 419 Marina Street, Carolina Beach, NC 28428 versus 5202 Carolina Beach Road, Suite 16, Wilmington, NC 28412. 3. Total impervious surface area increased to 76,831 square feet versus 68,255 square feet. 4. The wet detention pond was redesigned to provide additional surface area and volume. The following changes were made: N. C. Division of Water Quality Wilmington Regional Office 127 Cardinal Drive Extension Wilmington, NC 28405 (910) 395-3900 Customer Service (910) 350-2004 Fax 1 800 623-7748 NfDENR State Stormwater Management Systems Permit No. SW8 01.0903 Pond Modifications - Description Existing New Provided Surface Area, ft2 7,384 7,521 Provided Volume, ft3 5,717 6,771 Basin Bottom Elevation, FMSL 21 21 Permanent Pool Elevation, FMSL 25 25 Temporary Storage Elevation, FMSL 25.7 25.8 5. Section 11, condition 1 on page 5 of the permit will need to be addressed in order to bring the facility back into compliance. As discussed in a Notice of Inspection dated March 4, 2004 that this office sent to your facility, the slopes of the existing pond are eroding and they are not grassed with permanent vegetation. This deficiency must be corrected and the system brought back into compliance prior to the construction of any additional built -upon surface. Section II, Condition 1 reads as follows: Upon completion of the modifications to the existing stormwater management system, which include regrading the slopes of the wet detention pond to increase its surface area and volume, the stormwater management system shall be vegetated including the establishment of wetland plants on the vegetated shelf, and operational for its intended use prior to the construction of any additional built -upon surface. 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 27$11- 7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Rhonda Hall, or me at (910) 395-3900. Sincerely, Rick Shiver Water Quality Regional Supervisor RSSlrbh: S:1WQSISTORMWATIPERMIT1010903.jun04 cc: James Fentress,Jr., P.E. New Hanover County Building Inspections Beth E. Wetherill, New Hanover County Engineering Rhonda Hall Wilmington Regional Office Central Files 2 State Stormwater Management Systems Permit No. SW8 010903 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 Mark Simpson, Palm Beach Development Group, LLC The Palms At Dunhill New Hanover County FOR THE construction, operation and maintenance of wet detention pond 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. This permit shall be effective from the date of issuance until ,tune 22, 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. The stormwater control has been designed to handle the runoff from 76,831 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated on page 4 of this permit, and per approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing ail such required easements, in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. A permit modification must be submitted and approved prior to the construction of additional built -upon area from outside of the approved drainage area. 3 State Stormwater Management Systems Permit No. SW8 010903 DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET_.__ Project Name: The Palms at Dunhill Permit Number: SW8 010903 Modification Location: New Hanover County Applicant: Mark Simpson, Member Manager Mailing Address: Palm Beach Development Group, LLC 419 Marina Street Carolina Beach, NC 28428 Application Date: November 7, 2002 Amended June 16, 2004 Receiving Stream/River Basin: Mott Creek/Cape Fear Stream Index Number: 18-82 Classification of Water Body: "C-Sw" Drainage Area, acres: Onsite, ft : Offsite, ft2: Total Impervious Surfaces, ft2: Pond Depth, feet: TSS removal efficiency: Permanent Pool Elevation, FMSL: Permitted Surface Area, ft2: Permitted Storage Volume, ft3: Temporary Storage Elevation, FMSL: Controlling Orifice: Permitted Forebay Volume, ft3: 3.24 141,134 None 76,831 4 90% (no filter is required) 25.0 7,521 @Permanent Pool 6771 25.8 1.25"0 pipe (drawdown in 2-5 days) 3,070 4 State Stormwater Management Systems Permit No, SW8 010903 II. SCHEDULE OF COMPLIANCE Upon completion of the modifications to the existing stormwater management system, which include regrading the slopes of the wet detention pond to increase its surface area and volume, the stormwater management system shall be vegetated including the establishment of wetland plants on the vegetated shelf, and operational for its intended use prior to the construction of any additional built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and revegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans -and specifications. f. Debris removal and unclogging of outlet structure, orifice device, flow spreader, catch basins and piping. g. Access to the outlet structure must be available at all times. 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. Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following criteria; a. The fountain must draw its water from less than 2' below the permanent pool surface. b. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. c. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for the fountain's pump is based on the permanent pool volume. The maximum pump power for a fountain in this pond is 1/8 horsepower. 6. The facilities shall be constructed as shown on the approved plans. 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. 7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, 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. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 5 State Stormwater. Management Systems ' Permit No. SW8 010903 8. If the stormwater system was used as an Erosion Control device, it must be _ . _ restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 9. At least 30 days prior to the sale or lease of any portion of the property, the . permittee shall notify DWQ and provide the name, mailing address and phone number of the purchaser or lessee. An access/maintenance easement to the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale or lease of any portion of the property. 10. The permittee shall submit to the Director and shall have received approval,for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. If the proposed BUA exceeds the amount permitted under this permit, a modification to the permit must be submitted and approved prior to construction. 12. A copy of the approved plans and specifications -shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of. construction. 13. The permittee must maintain compliance with the proposed built -upon area and ensure that the runoff from all the built -upon is directed into the permitted system. 14. 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. 15. The permittee must maintain the current permitted drainage area. No additional runoff from outside of the permitted drainage area boundary may enter the permitted stormwater facilities without first applying for and receiving a permit modification. 1 State Stormwater Management Systems Permit No. SW8 010903 III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a formal permit transfer request to the Division of Water Quality, accompanied by a completed name/ownership change form, 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. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. 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 143-215.6A to 143-215.6C. 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 permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 6. 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. 7. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 8. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 9. The permittee shall no tify the Division any name, ownership or mailing address changes within 30 days. Permit issued this the 22"d day of June, 2004. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Alan W. Klimek, P: ., Director' Division of Water Quality By Authority of the Environmental Management Commission 7 State Stormwater Management Systems Permit No. SW8 010903 The Palms at Dunhill Stormwater Permit No.-SW8 010903 Modification New Hanover County Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe full.time) the construction of the project, (Project) (periodically/ weekly/ 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. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: SEAL Signature Registration Number Date State Stormwater Management Systems Permit No. SWS Ot 0903 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The outlet/bypass structure elevations are per the approved plan. 6. The outlet structure is located per the approved plans. ,7. Trash rack is provided on the outlet/bypass structure.' 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 15. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office New Hanover County Building Inspections 9 Date Received fee Paid Permit Number 3-I I-Zvo4- 317 010'70 3 11c;C' State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): Palm Beach Development Group, LLC 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Mark Simpson, Member Manager 3. Mailing Address for person listed in item 2 above: 419 Marina Street City: Carolina Beach State: NC Zip: 28428 Telephone Number: ( 910 T) 443-2976 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.); The Palms at Dunhill 5. Location of Project (street address): 5600 Carolina Beach Road City: . Wilmington County: New Hanover 6. Directions to project (from nearest major intersection): h South on Carolina Beach Road out of Monkey Junction. Project on Dunhill Road 300 feet north of Service Road/Carolina Beach Road intersection. 7. Latitude: N 34 ° 8' 15" Longitude: W 7 7 ° 53' 44" of project 8. Contact person who can answer questions about the project: Name:* James H. Fentress, Jr., P.E. Telephone Number: 910 Y815-0775 11. PERMiT INFORMATION: 1. Specify whether project is (check one) New Form S"-101 Version 399 Page I of Renewal X Modification a 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing perinit. number SW8 010903 and its issue date (if known) 3. Specify the type of project (check one): Low Density X High Density Redevelop General Permit Other 4, Additional Project Requirements (check applicable blanks): _ CAMA Major X Sedimentation/Erosion Control _404/401 Permit X NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748, I , III. PROJECT INFORMATION 1. In the space provided below, summarize how Stormwater will be treated. Also attach a detailed narrative (one to two pages) describing Stormwater management for the project. Existing wet detention_pond 2. Stormwater runoff from this project drains to the Motts Creek/Cape Fear River basin. 3. Total Project Area: 3.24 acres 4. Project Built Upon Area: 54.4 % 5. How many drainage areas does the project have? 1 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 Information Drainage Area 1 Drainage Area 2 Receiving Stream Name Motts Creek Receiving Stream Class CSW Drainage Area 3.24 Existing Impervious, Area 46,300 SF Proposed Impervious*Area 30,531 SF 'X hmpervious* Area (total) 54. 4% Impervious` Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings 23,958 SF On -site Streets On -site Parking 47,865 SF On -site Sidewalks '.3, 668 SF Other on -site (pool) Off -site Total: 76,831 SF Total: * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-10l Version 3,99 Page 2 o€4�'�— - _ 7. How was the off -site impervious area listed above 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 the sale of any lot. If lot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment. 1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the State. 2. No more than square feet of any lot shall be covered by structures or impervious materials. Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not Include wood decking or the water surface of swimming pools. 3. Swaks: shall not be filled In, piped, or altered except as necessary to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to construction. 5. All permitted runofi'from outparcels or future development shall be directed into the permitted stormwater control system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted. By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, 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 Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-1.0l Version 3.99 Page 3 of M 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 Regional Ofilee. Please indicate that you have provided the following required information by Initialing In the space provided next to each item. Ini • Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable Supplement Form(s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment/management • Two copies of plans and specifications, Including: Development/Project name Engineer and firm -Legend - North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property/project boundary - Location snap with named streets or NCSR numbers - Original contours, proposed contours, spot elevations, finished floor elevations - Details of roads, drainage features, collection systems, and stormwater control measures_ - Wetlands delineated, or a note on plans that none exist - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated - Vegetated buffers (where required) VIL AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide Information on your behalf, please complete this section. Designated agent (individual or firm): Stroud Engineering, P.A. Mailing Address: 102 Suite D. Cinema Drive City: Wilmington State: NC Zip: 28403 Phone: ( 910 ) 815-0775 Fax: ( 910 ) 815-0593 VIH. APPLICANT'S CERTIFICATION I, (print or type name of person Iisted in General Infonnation, item 2) certify that the information included on this pertnit application form is, to the best of my knowledge, correct and that the project will be constructed In conformance with the approved plans, that the required deed restrictions and protective covenants will be�ecorded, and that the proposed project complies with the requirements of 15A NCAC 2H .1000. Signatu Form SWU-101 Version 3.99 Page 4 of 4 Date: — V y hermit No. eij8 0 i6 i6o /V-d-b (lei be pro. vided by D I-Q) State of Nortli Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIT%4 SUPPLEMENT Tlris form may be photocopied for use as an original DWO S_tonnwater Management Plan Review: A complete stormwater management plan submittal .includes an application form, a wet detention basin supplement for each basin, design calculations, and' plans and specifications showing all basin and outlet structure details. 1. PROJECT INI+ORMATION Project Name: The Palms at Dunhill Contact Person: Mark Simpson _ Phone Number: ( 910) 443-2976 For projects with multiple basins, specify which basin this worlcshect applies to: elevations Basin Bottom Elevation 21.0 ft. (floor of the basin) Permanent Pool Elevation 25.0 ft. (elevation of the orifice) Temporary Pool Elevation 25. 8 ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 7521 —sq. ft. (water surface area at the orifice elevation) Drainage Area 3.24 ac. (on -site and oj/�.rile drainage to the basin) Impervious Area 1.76 ac. (on,sile and of16 f site drainage to the basis) volrtrrres Permanent Pool Volume Temporary Pool Volume forebay Volume Other pararneters SA/DAI Diameter of Orifice Design Rainfall Design TSS Removal 2 14,438 cu. ft. (combined volume of main basin and forebay) 6771 cu. ft. (volume detained above the permanent pool) 3,070 cu. ft. (approximately 20% of total volume) f= A W cm 0 o c.s U -, 1 4.74 (,YitiYacc area to d)-erirrage area ratio fr•orri DtVQ table) 1.25 in. (2 to 5 day lempor•ary pool draw-doivn required) 1.0 itt. 90 % (ininintum 85% required) Form SWU-102 Rev 3,99 Page I or 4 Footnotes: When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard tablc entries. In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BW manual provides design tables for both 85% TSS removal and 90% TSS removal. 11. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate 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. If a requirement has not been met, attach justification. Applicants Initials a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). (� b. The forebay volume is approximately equal to 20% of the basin volume. c. The temporary pool controls runoff from the design storm event. d. The temporary pool draws down in 2 to 5 days. N e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) The basin length to width ratio is greater than 3:1. The basin side slopes above the permanent pool are no steeper than 3:1. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). Vegetative cover above the permanent pool elevation is specified A trash rack or similar device is provided for both the overflow and orifice. A recorded drainage easement is provided for each basin including access to nearest right- of-way. 1. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. in. A mechanism is specified which will drain the basin for maintenance or an emergency. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one) 0 does Xdoes not incorporate a vegetated filter at the outlet. This system (check one) 0 does does not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of �f � ' � r + � �. 1 .� � i f 3 1. 'f r�. A • t r f l .. � y Maintenance activities shalt/ be performed as follows: . After every significant ntnoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of* any obstructions such that drawdown of the temporary pool occurs with]11 2 to 5 days as designed. 2. Repair eroded areas immediately, rc-seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, 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 frotn the wet detention 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 wet detention 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 permanent pool depth reads 3.0 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 2.25 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the Munk,) Permanent Pool Elevation _ 25. a Sedintept Ron oval El. 22. 75 75'Yn -------------- - Sediment Removal Elevation 22.0 75% Bottom Lle �ation --------------------------------------------- ------ Bottom Elevation 21, FOREBAY 11AIN POND 5. 17emove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 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. Norm SWU-102 Rev 3.99 Page 3 of 4 Y 7. All components of the wet detention 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 parry. Print name: Mark Simpson Member Manager Address: 5 - RQad 41`i t"( 2rinz Sf, Phone: 910-443-2976 Date: 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. M I, h�nP� S , OfI�S , a Notary Public for the State of �AQR� azd �na- County of _ ���, � � �C�� , do hereby certify that S t C`C1 OS CYi 1 personally appeared before me this day of ,2_, and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, �O p7AR �,i�i his, •••.......•••�O . `,,\, a, ',op WICK � 11ta1111WO, SEAL My commission expires q ` CT] - C)� Form 5WU-102 Rev 3.99 Page 4 of 4 State of North Carolina Department of Environment and Natural Resources Division of Water Quality �¢ WATER QUALITY SECTION COASTAL STORMWATER PERMIT NAME/OWNERSHIP CHANGE FORM 1. CURRENT PERMIT INFORMATION: , 1 i ' I . Stormwater Management Permit Number: SW8 010903 i t 2. Permit Holder's Name: PALM BEACH DEVELOPMENT GROUP, LLC 3. Signing Official's Name: _MARK SIMPSON Title: PARTNER (person legally responsible tnr permit) 4. Mailing Address: _5202 CAROLINA BEACH RD City: _WILMINGTON State: _NC_ Zip Code: _28412_ Phone: _9104432976 Fax: _9104583839 11. NEW OWNER / PROJECT / ADDRESS INFORMATION I . This request is for: (please check all that apply) a. Change in ownership of the property/company (Please complete ' Items 42, #3, and #4 below) X—b. Name Change of project (Please complete Item 45 below) —X—C. Mailing address change (Please complete Item 94 below) d. Other (Please explain): 2. New owner's name to be put on permit: t 3. New owner's signing official's name and title: (person legally responsible tirr permit) 4. New Mailing Address: _419 MARINA STREET— City: _CAROLINA BEACH State: _NC Zip Code: _28428� Phone: _9104432976 Fax: _9104583839� 5. New Project Name to be placed on permit: _THE PALMS AT DUNHILL Mar 05 04 09:54a Stroud EnCineering 9108150593 p.3 PERMIT NAME/OWNERSHIP CHANGE FORM THIS APPLICATION PACKAGE WILL NOT BE ACCEPTED BY THE DIVISION OF WATER QUALITY UNLESS ALL OF THE APPLICABLE ITEMS LISTED BELOW ARE INCLUDED WITH THE SUBMITTAL. REQUIRED ITEMS: 1. This completed form. 2. Lecal documentation of the transfer of ownership. 3. A copy of the recorded deed restrictions, if required by the permit. 4. The engineer's certification, if required by the permit. A signed Operation and Maintenance plan; if a system that requires maintenance will change ownership. b. Maintenance records. CERTIFICATION MUST BE COMPLETED AND SIGNED BY BOTH THE CURRENT PERMIT HOLDER AND THE NEW APPLICANT IN THE CASE OF A CHANGE OF OWNERSHIP. FOR NAME CHANGES, COMPLETE AND SIGN ONLY THE CURRENT PERMITTEE'S CERTIFICATION. Current Permittee's Certification: I, MARK SIMPSON I . attest that this application for a namelownership change has been reviewed and is accurate and complete to the best of my knowledge. i understand that if all required parts of this applicatiion are not completed and that if all required supporting information and attachments are not include t its �aplllcation package -will be returned as incomplete. Sigi t: Date:_ New Applicant's Certification: (Must be completed for all trwisfars ofownmhip) I, , attest that this application for an ownership change has been reviewed and is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are not completed and that if all required supporting information d attachments are not included, this application package w' a ret rued as incom xe. r04) Signature - Date: THE COMPLETED APPLICATION PACKAGE, INCLUDING ALL SUPPORTING INFORMATION AND MATERIALS, SHOULD BE SENT TO THE FOLLOWING ADDRESS: North Carolina Department of Environment and Natural Resources Division of Water Quality 127 Cardinal Dr'r've Extension Wilmington, NC 28405 ATTN-. Laurie Munn 1 y J � ,� 1 > > � State. orm,vater Mana<gemcnt Systems Permit No. SW8 010903 Amcrihost Inn & Suites Stormwater Permit No. SW 010903 New Hanover County Designer's Certification 1, James H. Fentress, Jr as a duly registered Professional En ineer Page 1 of 2 in the State of North Carolina, having been authorized to observe (pcLW ica11y-/wcekly/full time) the construction of the project, Amerihost Inn & Suites at Monkey Junction (Project) for Palm Beach Develpment Group, Lproject 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. I have checked the items listed on Page 2 of this form as a part of this Certification. Noted deviations from approved plans and specification: Signature A- \ � Registration u er PE 20643 Date May 1, 2002 %"%,%IItII1 fl��, 0''•. CA% =O••.oF�SS/p�.?'y r 'a SEAL. 20643 FENI l/cc /61111It" SEAL 7 • ;���i:�'• •�`r� 1r' _.�; .. r� 'i `_, f ).f't i•. �s Ji::.,1� ,/1 ._ _ _ . � M i s r r' Certification Requirements: sl_—: Stornl%valcr Mani-cillent Systems Permit No. SWS 010903 .r Page 2 of) l . The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. �3. Al] the built -upon area associated with the project is graded such that the runoff drains to the system. 4. The outlet/bypass structure elevations are per the approved plan. 5. The outlet structure is located per the approved plans. A Trash rack is provided on the outlet/bypass structure. All slopes are grassed wit)l permanent vegetation. Vegetated slopes are no steeper than 3:1. 9. The inlets are located per the approved plans and do not cause short-circuiting of the system. 10. The permitted amounts of surface area and/or volume have been provided. 11. Required drawdown devices are correctly sized per the approved plans. 2. All required design depths are provided. 3. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 14. The overall dimensions of the system, as shown on the approved plans, are provided. cc: NCDENR-DWQ Regional Office Tony Roberts, New Hanover County Building Inspections M