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HomeMy WebLinkAboutSW7090701_CURRENT PERMIT_20090727STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW 7C_�u7D DOC TYPE CURRENT PERMIT APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD NC®ENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Colleen H. Sullins I � Dee Freeman Governor Director �5c1\f` Secretary July 29, 2009 r Mr. Benjamin Burford, CEO iy I"�,26 n 1 TGW1 North, LLC & Liberty Warehouse, LLC ��� 1101 West Lake Road, Suite 600 Chicago, IL 60607 J� Subject: Stormwater Permit No. SW7090701 Tanglewood Plaza High Density Subdivision Wet Pond Project Pasquotank County Dear Mr. Burford: The Washington Regional Office received a complete Stormwater Management Permit Application for Tanglewood Plaza on July 24, 2009. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Session Law 2008- 211 and Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7090701, dated July 29, 2009, for the construction of the project, Tanglewood Plaza, located on the northeast corner of Halstead Boulevard Extension and Tanglwood Parkway, Elizabeth City, North Carolina. This permit shall be effective from the date of issuance until July 29, 2019, 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 150E 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. If you have any questions, or need additional information concerning this matter, please contact Scott Vinson, or me at (252) 946-6481. incerely �I- 7�T odge Regional Supervisor Surface Water Protection Section AH/sv: S:\WQS\STORMWATER\SW7090701 cc: Ken Sisk, PE, The Vision Group gheryl Eggar, Elizabeth City Planning & Inspections e/CNashington Regional Office Central Files North Carolina Division of Water Quality Internet: www rimaterquality.org One 943 Washington Square Mall Phone: 252-946-64811 FAX: 252-946-9215 North Carol I ❑ a Washington, NC 27889 FAX: 252-946-9215 An Equal Ppporlunily 1 Alfumarvc Action Employer ;Naturally State Stormwater Management Systems Permit No. SW7090701 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY SUBDIVISION 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 TGW1 North, LLC & Liberty Warehouse, LLC Tanglewood Plaza NE Corner of Halstead Blvd. & Tanglewood Pkwy, Elizabeth City, Pasquotank County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of Session Law 2008-211 and 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 July 29, 2019 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.6 of this permit. The subdivision is permitted for 10 lots, each allowed a maximum of "see Exhibit A" square feet of built -upon area. 3. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 4. Each lot within the subdivision whose ownership is not retained by the permittee, must submit a separate Offsite Stormwater Management Permit application package to the Division of Water Quality and receive a permit prior to any construction on the lot. 5. The built -upon areas associated with this project shall be located at least 50 feet landward of all perennial and intermittent surface waters. Page 2 of 9 State Stormwater Management Systems Permit No. SW7090701 R The following design elements have been permitted for this wet detention pond stormwater facility, and must be provided in the system at all times. C. d. e. f. I m n. o. p q r. Drainage Area, acres: Total Impervious Surfaces, ftz: Average Pond Design Depth, feet: TSS removal efficiency: Design Storm: Permanent Pool Elevation, FMSL: Permitted Surface Area @PP ftz: Permitted Storage Volume, ftJ: Storage Elevation, FMSL: Predevelopment 1 year 24 hour: Post development 1 year 24 hour: Controlling Orifice: Permanent Pool Volume, ft3: Forebay Volume, ft3: Maximum Fountain Horsepower: Receiving Stream / River Basin: Stream Index Number: Classification of Water Body: II. SCHEDULE OF COMPLIANCE 21.48 652,964 4.0 (6.50 total, including sediment cleanout) 90% 1.50 9.00 56,140 128,364 at temporary pool 10.95 13.43 cfs 0.18 cfs 3.00" 0 pipe 228,664 42,527 3/4hp or 0.75hp Knobbs Creek / Pasquotank 30-3-8 "C; Sw" No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (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. 2. The permittee is responsible for verifying that the proposed built -upon area for the entire lot does not exceed the maximum allowed by this permit. Once the lot transfer is complete, the built -upon area may not be revised without approval from the Division of Water Quality, and responsibility for meeting the built -upon area limit is transferred to the individual property owner. 3. If an Architectural Review Board or Committee is set up by the permittee to review plans for compliance with the BUA limit, the plans reviewed must include all proposed built -upon area. Any approvals given by the Board do not relieve the homeowner of the responsibility to maintain compliance with the permitted BUA limit. 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: 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 surface. 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 the approved plans, regardless of size. b. Project name change. C. Transfer of ownership. Page 3 of 9 State Stormwater Management Systems Permit No. SW7090701 Redesign or addition to the approved amount of built -upon area. 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. , Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 7. The permittee shall submit for approval, final site layout and grading plans for any permitted future development areas shown on the approved plans, prior to construction. 8. 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 all such required easements, in accordance with the approved plans. 9. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 10. 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. 11. 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. 12. The permittee shall at all times provide the operation and maintenance necessary to assure that all components of the permitted stormwater system function 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 re -vegetation of side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans. f. Debris removal and unclogging of structures, orifice, catch basins and piping. g. Access to all components of the system must be available at all times. 13. Records of maintenance activities must be kept by the permittee. The records will indicate the date, activity, name of person performing the work and what actions were taken. 14. The permittee shall submit to the Division of Water Quality an annual summary report of the maintenance and inspection records for each BMP. The report shall summarize the inspection dates, results of the inspections, and the maintenance work performed at each inspection. 15. This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. Page 4 of 9 State Stormwater Management Systems Permit No. SW7090701 16. Prior to the sale of any lot, the following deed restrictions must be recorded: a. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW7090701, as issued by the Division of Water Quality under NCAC 2H.1000. b. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the Stormwater Management Permit. C. These covenants are to run with the land and be binding on all persons and parties claiming under them. d. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. e. Alteration of the drainage as shown on the approved plans may not take place without the concurrence of the Division of Water Quality. f. The maximum built -upon area per lot is (see Exhibit A) square feet. This allotted amount includes any built -upon area constructed within the lot property boundaries, and that portion of the right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. g. All runoff on the lot must drain into the permitted system. This may be accomplished through providing roof drain gutters, which drain to the street, grading the lot to drain toward the street, or grading perimeter swales and directing them into the pond or street. Lots that will naturally drain into the system are not required to provide these measures. h. Built -upon area in excess of the permitted amount will require a permit modification. i. Each lot within the subdivision whose ownership is not retained by the permittee, must submit a separate Offsite Stormwater Management. Permit application package to the Division of Water Quality and receive a permit prior to any construction on the lot. j. If permeable pavement credit is requested, the property owner must submit a request, with supporting documentation, to the permittee and receive approval prior to construction of BUA. 17. A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of recording the plat, and prior to selling lots. The recorded copy must contain all of the statements above, the signature of the Permittee, the deed book number and page, and the stamp/signature of the Register of Deeds. 18, Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ personnel. The facility must be in compliance with all permit conditions. Any items not in compliance must be repaired or replaced to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 19. 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. Page 5 of 9 State Stormwater Management Systems Permit No. SW7090701 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 3/4hp or 0.75hp. 20. If permeable pavement credit is desired, the permittee must submit a request to modify the permit to incorporate such language as required by the Division of Water Quality. The request to modify must include a soils report identifying the type of soil, the Seasonal High Water Table elevation and the infiltration rate. Upon the successful completion of a permit modification, the individual lot owners that request to utilize permeable pavements must submit the necessary forms and documentation to the permittee and receive approval prior to construction of the permeable pavement. 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 completed Name/Ownership Change form signed by both parties, to the Division of Water Quality, accompanied by the supporting documentation as listed on page 2 of the form. The approval of this request will be considered on its merits and may or may not be approved. 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves a request to transfer the permit. 3. 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. 4. 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) having jurisdiction. 5. 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. 6. 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. 7. The permit issued shall continue in force and effect until revoked or terminated. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. 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. 9. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2008- 211, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al. Page 6 of 9 State Stormwater Management Systems Permit No. SW7090701 11. The permittee shall notify the Division in writing of any name, ownership or mailing address changes at least 30 days prior to making such changes. 12. This permit shall be effective from the date of issuance until July 29, 2019. Application for permit renewal shall be submitted 180 days prior to the expiration date of this permit and must be accompanied by the processing fee. Permit issued this the 29'h day of July, 2009. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION X LL.� Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW7090701 Page 7 of 9 State Stormwater Management Systems Permit No. SW7090701 Tanglewood Plaza Stormwater Permit No. SW7090701 Paspuotank County Designer's Certification Page 1 of 2 I, , as a duly registered 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. The checklist of items on page 2 of this form is a part of this Certification. Noted deviations from approved plans and specifications: Signature Registration Number Date SEAL Page 8 of 9 State Stormwater Management'Systems Permit No. SW7090701 Certification Requirements: Page 2 of 2 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, a forebay, and the vegetated filter. 15. The required dimensions of the system are provided, per the approved plan. cc: NCDENR-DWQ Regional Office Elizabeth City Planning & Building Inspections Page 9 of 9 "EXHIBIT A" Tanglewood Plaza Pond 1 Area Area (acres) Impervious % Impervious Area (acres) Lot 1 1.55 70% 1.09 Lot 2 1.52 70% 1.06 Lot 3 1.87 70% 1.31 Lot 4 1.98 70% 1.39 Lot 5 1.10 70% 0.77 Lot 6 1.44 70% 1.01 Lot 7 1.64 70% 1.15 Lot 8 1.70 70% 1.19 Lot 9 1.81 70% 1.27 Lot 10 2.13 70% 1.49 ROW 4.74 69% 3.27 Total 21.48 14.99 Percent Impervious 69.8% DWQ USE ONLY MEN P"ftbiN Fee Paid Permit Number SWiOtI 0-IN JUL --I tuuJ C,1444 1C14--'� .,Wc State of North Carolina NC ®ENR 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): TGW1 North LLC & Liberty Warehouse LLC 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Beniamin Burford. CEO 3. Mailing Address for person listed in item 2 above: 1101 West Lake Road, Suite 600 Phone: ( 312 ) 558-1084 Email: benjie@conlonandco.com IL Fax: (312 ) 291-4616 60607 ^^ DNS IJAJ41 C-qp� 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Tanalewood Plaza 5. Location of Project (street address): Northeast corner of the intersection of Halstead Boulevard Extension and City: Elizabeth Citv County: Pasauotank Zip: 27909 6. Directions to project (from nearest major intersection): Head north from Hertford on route #17 toward Elizabeth Citv. Take route #17 BVoass north to Halstead Boulevard exit. Head east on Halstead, at first traffic light turn left onto Tanglewood Pkwy. Site is on the right. 7. Latitude: 360 17 ' 40 " N Longitude: 76 ° 17' 34" W of project 8. Contact person who can answer questions about the project: Name: Kenneth Sisk P.E. Telephone Number: ( 757 ) 410-5740 Email: ksisk@thevisgrp.com IL PERMIT INFORMATION: 1. Specify whether project is (check one): X❑New ❑Renewal []Modification FormSWU-101 Version09.25.08 Page Iof4 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number and its issue date (if known) ' 3. Specify the type of project (check one): ❑Low Density X❑High Density []Redevelop ❑General Permit ❑Universal SMP ❑Other 4. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ❑CAMA Major X❑Sedimentation/Erosion Control 0404/401 Permit ❑NPDES Industrial Stormwater 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. Stormwater for this project will be treated via one wet detention pond. 2. Stormwater runoff from this project drains to the Pasquotank River basin. 3. Total Property Area: 21.48 acres 4. Total Coastal Wetlands Area: 0.00 acres 5. Total Property Area (3) - Total Coastal Wetlands Area (4) = Total Project Area**: 21.48 acres 6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA): 69.8% 7. How many drainage areas does the project have? 1 8. 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. For high density oroiects. comnlete the table with one drainage area for each engineered stormwater device. Basin Information Drainage Area 1 Drainage Area 2 Receiving Stream Name Knobbs Creek Stream Class & Index No. C:Sw 30 -3 - Y Total Drainage Area (so 21.48 Acres On -site Drainage Area (so 21.48 Acres Off -site Drainage Area (so 0.00 Acres Existing Impervious* Area (so 0 Acres Proposed Impervious*Area (so 14.99 Acres % Impervious* Area (total) 69.8% Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings (so N/A ri - On -site Streets (so N/A On -site Parking (so N/A On -site Sidewalks (so N/A Other on -site (so See attached listing , 7 S Off -site (so NIA _41 Total (so: 14.99 Acres Impervious area is defined as the built upon area inciriding, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-101 Version 09.25.08 Page 2 of S� **Total project area shall be calculated to exclude Coastal Wetlands from use when calculating the built upon area percentage calculation. This is the area used to calculate overall percent project built upon area (BUA). 9. How was the off -site impervious area listed above Projects in Union County: Contact the DWQ Central Office staff to check to see ifyou project is located wither a Threatened & Endangered Species watershed that may be subject to more stringent stormwaler requirements. IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following property 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. Forms can be downloaded from htto://h2o.enr.state.nc.us/su/bmp forms.htm - deed restrictions. Form DRPC-1 High Density Commercial Subdivisions Form DRPC-2 High Density Developments with Outparcels Form DRPC-3 High Density Residential Subdivisions Form DRPC-4 Low Density Commercial Subdivisions Form DRPC-5 Low Density Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below, you certify that the recorded property restrictions and protective covenants for this project shall include all the applicable items required in the above form, 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 NC DWQ 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 Permitting Unit at (919) 807-6300 for the status and availability of these forms. Forms can be downloaded from ham://h2o.enr.state.nc.us/su/bml2 forms.htm. Form SW401-Low Density Form SW401-Curb Outlet System Form SW401-Off-Site System Form SW401-Wet Detention Basin Form SW401-Infiltration Basin Form SW401-Infiltration Trench Form SW401-Bioretention Cell Form SW401-Level Spreader Form SW401-Wetland Form SW401-Grassed Swale Form SW401-Sand Filter Form SW401-Permeable Pavement Form SW401-Cistern Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Wet Detention Basin Supplement Infiltration Basin Supplement Underground Infiltration Trench Supplement Bioretention Cell Supplement Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Constructed Wetland Supplement Grassed Swale Supplement Sand Filter Supplement Permeable Pavement Supplement Cistern Supplement Form SN'U-101 Version 09.25.08 Paee 3 of 4 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 Office. (Appropriate office may be found by locating project on the interactive online map at ht[n://h2o.enr.state.nc.us/su/nisi maos.htm) 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. In tia • Original and one copy of the Stormwater Management Permit Application Form • Original and one copy of the Deed Restrictions &Protective Covenants Form (if required as per Part IV above) • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP • Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD) payable to NCDENR • Calculations & detailed narrative description of stormwater treatment/management • Copy of any applicable soils report • Two copies of plans and specifications (sealed, signed & dated), including: - Development/Project name - Engineer and firm -Legend - North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property/project boundary - Location map 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) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf (such as additional information requests), please complete this section. (ex. designing engineer or firm) Designated agent (individual or Mailing NOW City: C-t� P'O£AY_r_ State: VA Zip: 2-33Z7- Phone: ( "7S'7 ) 'A1O -S'740 Fax: ( 79r7 ) 41n- 5-7q) Email: KSISIC e 74FV15GRj>•COw1 VIII. APPLICANT'S CERTIFICATION I, (print or type name of person listed in General Information, item 2) ' HQJTAAIM 0V9 F0t? b certify that the information included on this permit 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 co enants w 1 recor e that the pro osed project complies with the requirements of 15A NCAC 2H .1000. / Signature: Date: I7 Form SWU-101 Version 09.25.08 V Page 4 of 4 High Density Commercial Subdivisions EMPRESS ccD» Deed Restrictions & Protective Covenances D JUL —7 zoos In accordance with Title 15 NCAC 2H.1000, the Coastal Stormwater Management Regulations, deed restrictions and protective covenants are required for High Density Commercial Subdivisl lots will be subdivided and sold and runoff will be treated in an engineered stormwater contr i Deed restrictions and protective covenants are necessary to ensure that the development maintains a built -upon area consistent with the design crlteria used to size the stormwater control facility. 1, R fill j acknowledge, affirm and agree by my signature below, that I will causaithe tollowingdeed- restrictions and covenants to be recorded prior to the sale of any lot within the project known as Tanglewood Plaza 1, The following covenants are Intended to ensure ongoing compliance with State Stormwater Management Permit Number as issued by the Division of Water Quality under NCAC 2H.1000. 2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the stormwater management permit. 3. These covenants are to run with the land and be binding on all persons and parties claiming under them. 4.. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. 5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence of the Division of Water Quality. (See attached 6. The maximum allowable built -upon area per lot is _Ex�h_ibit "A" square feet. (OR, If the proposed built -upon area per lot will vary, please use th o owing format & language (in bold): The maximum built -upon area per lot, In square feet, is as listed below: Lot # BUA Lot # BUA Lot # BUA Lot # BUA This allotted amount includes any built -upon area constructed within the lot property boundaries, and that portion of the fight -of -way between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. 7. All runoff from the built -upon areas on the lot must drain Into the permitted system. This may be accomplished through a variety of means including roof drain gutters which drain to the street, grading the lot to drain toward the street, or grading perimeter swales to collect the fot runoff and directing them into a component of the stormwater collection system. Lots that will naturally drain Intoer the system are not re uired to provide these additional measures. 8. The ownof each 1 Qse o er�hip is not retained by the permfttee, is required to submit a separate star er t a licatron to the Division of Water Quality and receive a permit Sign Z , a Notary Public in the State of I L-L I I Ot S , County of Q_001_ do hereby certify that eiJ54A I I_i_T—) UR-FD RL personally appeared before me this the day of aU 0 r✓ 20(2L, and acknowledge the due execution of th foregoing instrument. Witness my hand and official seal, j SEAL My Commission expires Page 1 of 1 ..��� �- ��� ;�'•:� �,•: bi.,� rr is 4n" S.vw�nn,..,( "EXHIBIT A" Tanglewood Plaza Pond 1 Area Area (acres) Impervious % Impervious Area (acres) Lot 1 1.55 70% 1.09 Lot 2 1.52 70% 1.06 Lot 3 1.87 70% 1.31 Lot 4 1.98 70% 1.39 Lot 5 1.10 70% 0.77 Lot 6 1.44 70% 1.01 Lot 7 1.64 70% 1.15 Lot 8 1.70 70% 1.19 Lot 9 1.81 70% 1.27 Lot 10 2.13 70% 1.49 ROW 4.74 69% 3.27 Total 21.48 14.99 Percent Impervious 69.8% Permit No. 57W 701L77 r)l (lobe provided by DWo) EXPRESS ilwA A��.i NCDENR Project name Contact person Phone number Date Drainage area number JUL -7 2009 SIC DENR O�O�- W A Pf9O h STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Pad 111) must be printed, filled out and submitted along with all of the required information. II. DESIGN INFORMATION Site Characteristics Drainage area Impervious area, post -development % impervious Design rainfall depth Storage Volume: Non -SA Waters Minimum volume required Volume provided Storage Volume: SA Waters 1.5' mnoff volume Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr mnoH Minimum volume required Volume provided Peak Flow Calculations Is the prelpost control of the lyr 24hr storm peak flow required? 1-yr, 24-hr rainfall depth Rational C, pre -development Rational C, post -development Rainfall intensity1-yr, 24-hr storm Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak flow control Elevations Temporary pool elevation Permanent pool elevation SHWT elevation (approx. at the perm. pool elevation) Top of 1Oft vegetated shelf elevation Bottom of 1Oft vegetated shelf elevation Sediment cleanout, top elevation (bottom of pond) Sediment cleanout, bottom elevation Sediment storage provided Is there additional volume stored above the state -required temp. pool? Elevation of the top of the additional volume (757)410-5740 19,Jun-09 1 935,669 ft' 652,964 ft2 69.79 % 1.5 in 79,532 fit' OK 128,364 ft' OK, volume provided is equal to or in excess of volume required. it ft' 0 ft3 N (Y or N) in (unifless) (unidess) Whir 13.43 ft'Isec ft'Isec ft'Isec 10.95 fmsl 9.00 first fmsl 9.50 fmsl 8.50 fmsl Data not needed for calculation option #1, but OK if provided. 3.50 fmsl 2.50 fmsl Data not needed for calculation option #1, but OK if provided. 1.00 1t Y (Y or N) 10.95 fmsl OK Form SW401-Wet Detention Basin-Rev.6-2I20109 Parts I. & II. Design Summa, Page 1 of 2 Permit No. (to be provided by DWD) II. DESIGN INFORMATION ' Surface Areas Area, temporary pool 69,832 If Area REQUIRED, permanent pool 56,140 ftz SAIDA ratio 6.00 (unitless) Area PROVIDED, permanent pool, A... 56,140 112 OK Area, bottom of 1 Oft vegetated shelf, A, u,dl 49,500 f 2 Area, sediment cleanout, top elevation (bottom of pond), A�t ooe 31,981 t Volumes Volume, temporary pool 128,364 ft' OK Volume, permanent pool, Vp,, -. 228,664 ft' Volume, forebay (sum of forebays if more than one forebay) 42,527 ff3 Forebay %of permanent pool volume 18.6% % OK SAIDA Table Data Design TSS removal 90 % Coastal SAIDA Table Used? Y (Y or N) Mountain/Piedmont SAIDA Table Used? N (Y or N) SAIDA ratio 6.00 (unifless) Average depth (used in SAIDA table): Calculation option 1 used? (See Figure 10-2b) Y (Y or N) Volume, permanent pool, Vp,,,,ym 228,664 ft' OK Area provided, permanent pool, Ap,,,,,. 56,140 tz OK Average depth calculated 4.07 ft OK Average depth used in SAIDA, d.., (Round to nearest 0.511) 4.0 ft OK Calculation option 2 used? (See Figure 10-2b) N (Y or N) Area provided, permanent pool, Aa,,,,_�y ttz Area, bottom of 10ft vegetated shelf, A, ,� ftz Area, sediment cleanout, top elevation (bottom of pond), A„., ttz 'Depth' (distance blw bottom of 10ft shelf and top of sediment) It Average depth calculated It Average depth used in SAIDA, d., (Round to nearest 0.511) it Drawdown Calculations Drawdown through office? Y (Y or N) Diameter of office (if circular) 3.00 in Area of office (tt-noncircular) inz Coefficient of discharge (Co) 0.60 (unidess) Driving head (Ho) 0.65 ft Drawdown through weir? N (Y or N) Weir type (unittess) Coefficient of discharge (C,) (untless) Length of weir (L) ft Driving head (H) If Pre -development 1-yr, 24-hr peak flow 13.43 113lsec OK Post -development 1-yr, 24-hr peak flow ft3lsec Storage volume discharge rate (through discharge office or weir) 0.18 113lsec Storage volume drawdown time 4.83 days OK, draws down in 2-5 days. OK, drawdown time is correct. Addttional Information Vegetated side slopes 3 :1 OK Vegetated shelf slope 10 :1 OK Vegetated shelf width 10.0 It OK Length of towpath to width ratio 3 :1 OK Length to width ratio 3.0 :1 OK Trash rack for overtow, 8 office? N (Y or N) Trash rack or similar device recommended. Freeboard provided 2.0 It OK Vegetated filter provided? N (Y or N) OK Recorded drainage easement provided? Y (Y or N) OK Capures all runoff at ultimate buildcut? Y (Y or N) OK Drain mechanism for maintenance or emergencies Pump Out Form SW401-Wet Detention Basin-Rev.6-220109 Pans L 811. Design Summary, Page 2 of 2 Permit No. (to be provided by DWQ) III. REQUIRED ITEMS CHECKLIST Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Page/ Plan Sheet No. e.-4 111 .A DUG" nlUf, p_1SL � 'IiED 1. Plans (1" - 50' or larger) of the entire site showing: - Design at ultimate build -out, - Off -site drainage (if applicable), - Delineated drainage basins (include Rational C coefficient per basin), Basin dimensions, Pretreatment system, High flow bypass system, Maintenance access, - Proposed drainage easement and public right of way (ROW), - Overflow device, and - Boundaries of drainage easement. 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing: - Outlet structure with trash rack or similar, - Maintenance access, - Permanent pool dimensions, - Forebay and main pond with hardened emergency spillway, - Basin cross-section, - Vegetation specification for planting shelf, and - Filter strip. 3. Section view of the wet detention basin (1" = 20' or larger) showing: - Side slopes, 3:1 or lower, - Pretreatment and treatment areas, and - Inlet and outlet structures. 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified on the plans prior to use as a wet detention basin. 5. A table of elevations, areas, incremental volumes 8 accumulated volumes for overall pond and for Forebay, to verify volume provided. 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the entire drainage area is stabilized. 7. The supporting calculations. 8. A copy of the signed and notarized operation and maintenance (08M) agreement. 9. A copy of the deed restrictions (if required). 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County soil maps are not an acceptable source of soils information. Form SW401-Wet Detention Basin-Rev.6-2/20/09 Part III. Required Items Checklist, Page 1 of 1 EXPRESS JUL - 7 2009 Permit Number: (to be provided by D N7Q) Drainage Area Number: Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of, the public, and the removal efficiency of the BMP. 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): ❑ does ® does not incorporate a vegetated filter at the outlet. This system (check one): ❑ does ® does not incorporate pretreatment other than a forebay. Important maintenance procedures: — Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). — No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. — Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. — If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the maximum extent practical. — Once a year, a dam safety expert should inspect the embankment. After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance should be kept in a known set location and must be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblem: How I will remediate theproblem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the wet Areas of bare soil and/or Regrade the soil if necessary to detention basin erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Vegetation is too short or too Maintain vegetation at a height of long. approximately six inches. Fonn SW401-Wet Detention Basin O&M-Rev.4 Page 1 of 4 Permit Number: (to be provided by DWQ) Drainage Area Number: BMP element: Potentialproblem: How I will remediate theproblem: The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the swale sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to swale. smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. The forebay Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design depth for possible. Remove the sediment and sediment storage. dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The vegetated shelf Best professional practices Prune according to best professional show that pruning is needed practices to maintain optimal plant health. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The main treatment area Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design sediment possible. Remove the sediment and storage depth. dispose of it in a location where it will not cause impacts to streams or the BMP. Algal growth covers over Consult a professional to remove 50% of the area. and control the algal growth. Cattails, phragmites or other Remove the plants by wiping them invasive plants cover 50% of with pesticide (do not spray). the basin surface. Ponn SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4 Permit N (to be provided by DWQ) Drainage Area Number: BMP element: Potentialproblem: How I will remediate theproblem: The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. Evidence of muskrat or Use traps to remove muskrats and beaver activity is present. consult a professional to remove beavers. A tree has started to grow on Consult a dam safety specialist to the embankment. remove the tree. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. if applicable) The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Division of damage have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 919-733- 1786. 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 55 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 5.5 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM ill in the blanks) Sediment Removal . 3_5 Pe nanen Pool Elevatio Form SW401-Wet Detention Basin O&M-Rev.4 ----------------- Volume Bott om Permanent Pool Elevation 9.0 Sediment Removal Elevation 3.5 Volume �.5 -ft Min. Sediment Bottom Elevation 2.5 1-fr r Storage Sedimei Storage FOREBAY MAIN POND Page 3 of 4 Permit Number: (to be provided by DWQ) acknowledge and agree by my signature below that 1 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. Project name:TAeJGtS t,JCOlb F-' A I= A BMP drainage area number: ° I Print name: &(N�te (3V hs!'d Title: 6&-�> Address: lfol I). L ke Sf-iref 6t- 9,r r' ��>o -rL 606O7 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 Notary Public for the State of 1 LLl QQ (-'A County of l_paL , do hereby certify that _Be03A t-A t YJ BQPL170( l] personally appeared before me this day of _tU oe 170O01 , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, RUTH HERNANDEZ m°SEAL. MY COMMISSION EVIRES +�.....•�e APRIL 13, 2013 OF 14 SEAL My commission expires `�-13 U)dDS Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4