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HomeMy WebLinkAboutSW7051110_CURRENT PERMIT_20080221STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW Zf%W/D DOC TYPE (� CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE DOC DATE oaa / YYYYMMDD W Q�o o�pF W A rFgpG Michael F. Easley, Governor William G. Ross Jr,. Se"etar}' r1'nrth Carolina Department of finvirontnent autd Natural ftesnt=roes Q COleen EI. Sulhns, Director Division of Water Quality February 21, 2008 Mr. John W. Dixon, Managing Member Day Beacon #9, LLC PO Box 1327 Nags Head, NC 27959 Subject: Stormwater Permit No. SW7051110MOD Day Beacon #9 High Density Redevelopment Project Beaufort County Dear Mr. Dixon: The Washington Regional Office received a complete Stormwater Management Permit Application for the modification of Day Beacon #9 on January 25, 2008. 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. SW7051110MOD dated February 21, 2008, for the construction of the subject project. By issuance of this permit, the permit issued for this project on December 19, 2005 is hereby rescinded. The plans that were approved on December 19, 2005 are still covered under this permit modification and the attached Sheet 1 — Plan Revision, sealed and dated January 23, 2008, is to be considered an addendum to those original plans. This modification is to cover the construction of a new swimming pool and associated decking. This permit shall be effective from the date of issuance until December 19, 2015, 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. If you have any questions, or need additional information concerning this matter, please contact Scott Vinson, or me at (252) 946-6481. S' cer ly, �C. Al o Regional Supervisor Surface Water Protection Section AHlsav: C:ISTORMWATIPERMIT1SW7051110MOD cc: David A. Deel, PE aufort County Building Inspections Washington Regional Office Central Files North Carolina Division of Water Quality Washington Regional Office Phone (252) 946-6481 FAX (252) 946-9215 Customer Service IntemeL www.ncwaterqualitLr.- 943 Washington Square Mall, Washington, NC 27889 1-877-623-6748 Nsne )r hCarolina NaturallJ An Equal OpporlunitylAffirmative Action Employer — 50% Recycled110% Post Consumer Paper State Stormwater Management Systems Permit No. SW7051110MOD STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY REDEVELOPMENT 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 Day Beacon #9, LLC Day Beacon #9 Beaufort County FOR THE construction, operation and maintenance of an infiltration basin 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 December 19, 2015, 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 in Section 1.6 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 48,684 square feet of impervious area. 3. The tract will be limited to 64,061 square feet of built -upon area per application and approved plans under redevelopment. The existing impervious area that has been removed from the site totaled 95,936 square feet. 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 all such required easements, in accordance with the approved plans. Page 2 of 7 State Stormwater Management Systems Permit No. SW7051110MOD 5. The following design criteria have been provided in the infiltration basin and must be maintained at design condition: a. Site Area, acres: 2,20 b. Drainage Area to Basin, ft2: 63,058 C. Total Impervious Surfaces, ft2: 48,684 d. Design Storm, inches: 1 e. Basins Depth, feet: 1.20 f. Bottom Elevation, FMSL: 4.50 g. Bottom Surface Area, ft2: 2,822 h. Bypass Overflow Elevation, FMSL: 5.70 i. Permitted Storage Volume, ft3: 4,166 j. Type of Soil: Urban Land 1 Sands k. Expected Infiltration Rate, inlhr: 0.52 I. Seasonal High Water Table, FMSL: 2.00 M. Time to Draw Down, hours: 27.7 n. Receiving Stream/River Basin: Pantego Creek 1 Tar -Pamlico o. Stream Index Number: 29-34-34-(2) P. Classification of Water Body: "SC; NSW' II, SCHEDULE OF COMPLIANCE 1. 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. 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 bypass structure, infiltration media, flow spreader, catch basins, piping and vegetated filter. g. A clear access path to the bypass structure must be available at all times. Page 3 of 7 State Stormwater Management Systems Permit No. SW7051110MOD 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. 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. 6. 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. 7. 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. 8. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 9. 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, lease 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. 10. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 11. A copy of the approved plans and specifications shall be maintained on file by the Permittee for the life of the project. 12. 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. Page 4 of 7 State Stormwater Management Systems Permit No, SW7051110MOD Ili. 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) having 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 notify the Division any name, ownership or mailing address changes within 30 days. Permit issued this the 21$t day of February, 2008. ORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION -- — for Coleen H.'Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission Permit No.: SW7051110MOD Page 5 of 7 State Stormwater Management Systems Permit No. SVV70511 1 OMOD Day Beacon #9 Stormwater Permit No. SW7051 11OMOD Designer's Certification 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 included in the Certification. Noted deviations from approved plans and specification: Signature Registration Number Date SEAL Page 6 of 7 State Stormwater Management Systems • , Permit No. SV 7051110MOD ' 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 bypass structure weir elevation is per the approved plan. .6. The bypass structure is located per the approved plans. .7. A Trash Rack is provided on the 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. All required design depths are provided. 13. All required parts of the system are provided. 14. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Washington Regional Office Beaufort County Building Inspections Page 7 of 7 RoyGo; c1nor cool?I�� MICIA AEL S. REGAN Secretary S. DANIEL SMITH lrrteifin Olrrrror Day Beacon # 9, LLC Attention: Mr. David W. Hoyle P.O. Box 2494 Gastonia, NC 28053 Dear Mr. Hoyle: NORTH C:AROLINA Environinettral Quality May 7, 2019 Subject: Stormwater Permit Renewal Stormwater Management Permit SW7051110 Bay Beacon # 9 Condos Beaufort County A Division of Energy, Mineral, and Land Resources file review has determined that Stormwater Permit SW7051110 for a stormwater treatment system consisting of an infiltration basin system serving the Day Beacon Condominiums located on E. Front Street in Belhaven, NC expires on December 19, 2019. This is a reminder that permit renewal applications are due 180 days prior to expiration. We do not have a record of receiving a renewal application. Please submit a completed permit renewal application along with a $505.00 fee for permit renewal. Permit application forms for renewal can be found on our website at: Litt.1is-4/ (L(1_nc.t;c�.v�ahc�ut c.livisitms ener-rrvrrv-ininc�ral-land-i-csources energy-mincr��l-I�In�I rule~ stor-t iwarer;uragram/post:-Construction. North Carolina General Statutes and the Coastal Stormwater rules require that this property be covered under a stormwater permit. Failure to maintain a permit subjects the owner to assessment of civil penalties. If you have questions, please feel free to contact me at (252) 948-3923. 1 will be glad to discuss this by phone or meet with you. If you would like I cane -mail you a copy of the renewal application. You can request a copy of the application form by e-mailing me at roger.thorpe@ncdenr.gov. Sincerely, Roger K. Thorpe Environmental Engineer D North Carolina Department of Fnvironmental Quality I Division of Energy, Mineral and Land Resources t�:E_Q" Washington Regional oince. 1443 Washington Square Mail I Washington, North Carolina 27884 rrrin�ii ,non o.�.,r..,nmi o..;\ �� 252.940.6481 DWQ USE ONLY Date Received Fee Paid Permit Number D State of North Carolina Klv cK- 11/1 &/Q 7 Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICKT-1ON, FORM This form may be photocopied for use as an original J L l-UeU V e 0 CM NOV I P007 I. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the prrojec Day Beacon #9 LLC 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): 3. Mailing Address for person listed in item 2 above: P.O. Box 1327__ City:Nags Head State -NC Zip:27959 Phone: (252 ) 441-2110 Fax: Email: 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Day_ Beacon #9 5. Location of Project (street address): S.-Side of E. Front St. (Water St.) between Edward St. and Pamlico St. City:Belhaven County:Beaufort 6. Directions to project (from nearest major intersection): Project is located approx.193 feet east of intersection of Front Street (Water Street) and Pamlico Street. 7. Latitude:35 deg. 32' 09" N Longitude:76 deg. 37' 18" W of project 8. Contact person who can answer questions about the project: Name:David A. Deel, P.E. Telephone Number: (252 ) 261-3300 Email:dadee ftuible.com H. PERMIT INFORMATION: 1. Specify whether project is (check one): ❑New ❑Renewal ®Modification Form SWU-101 Version 8.07 Page 1 of 4 1 n�nc� z,,, 11 � � . ,. •� Ao tom' i2'°'tJ t! 4 I l pp nn Sin��c.nLa, Cr.flSS 5� L�. i`e�Cc�L t Or i Yl UO h c . 04 l\ w w oSIAA rwie-5 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit numberSW7051110 and its issue date (if known)December 19, 2005 3. Specify the type of project (check one): ❑Low Density ®High Density ®Redevelop ❑General Permit ❑Universal SMP ❑Other 4. Additional Project Requirements (check applicable blanks): ®CAMA Major ❑Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748. Ill. 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. This modification proposes to place a swimming pool on piles over a previously permitted infiltration. basin.___.__ Access to the infiltration basin will be provided under the swimming pool support structure with 5'9" clearance nominal increase in im ervious area which the basins are already sized to handle. 2. Stormwater runoff from this project drains to the Pamlico River basin. 3. Total Site Area: 2.20 acres 4. Total Wetlands Area: 0 acres 5. 100' Wide Strip of Wetland Area: n/a acres (not applicable if no wetlands exist on site) 6. Total Project Area" ":2.20 acres 7. Project Built Upon Area:66.77 % 8. How many drainage areas does the project have?1 9. 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 iin the same formatasbelow. [D"F�+l 5 �'�C� 7 ( U.H. ja 7;,-A t. iS�,Si r► 1 Basin Information Drainage Area 1 Drainage Area 2 Receiving Stream Name Pantego Creek Pantego Creek Stream Class & Index No. SB SB Drainage Area (so 95,936 sf (2.20 Ac.) 63,058 sf (1.45 Ac.) Existing Impervious" Area (sf) 63,803 sf (1.46 Ac.) 48,426 sf (1.11 Ac.) Proposed Impervious"Area (so 64,061 sf (1.47 Ac.) 48,684 sf (1.12 Ac.) % Impervious" Area (total) 66.77% 77.2% Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings (sf) 21,633 sf (0.50 Ac.) 12,130 sf (0.28 Ac.) On -site Streets (sf) Z271 sf (0.05 Ac.) 948 sf (0.02 Ac.) On -site Parking (so 33,709 sf (0.77 Ac.) 32,902 sf (0.76 Ac.) On -site Sidewalks (so 6,388 sf (0.15 Ac.) 2,644 sf (0.06 Ac.) Other on -site (sf) 60 sf 60 sf Off -site (sf) - - Total (sf): 64,061 sf (1.47 Ac.) 48,684 sf (1.12 Ac.) * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-101 Version 8.07 Page 2 of 4 "Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area percentage calculation. 10. How was the off -site impervious area listed above derived?AutoCAD Area Routine IV. DEED RESTRICTIONS AND PROTECTIVE COVENANT'S One of the following 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. Form DRPC-1 High Density Commercial Subdivisions Form DRPC-2 High Density Developments with Outparcels Form DRPC-3 High Density Residential Subdivisions Form DRPC4 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 deed 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 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 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 SW401-5and Filter 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 Farm SWU-101 Version 8.07 Page 3 of 4 9 'il _ �t, i!� 1� (l,, � , _ i .:i. .. ,.—I • r't ' , rrl f• �I'fl „ •, , '! f �: ,.f., .. .� - r.�� � t I r� f '{ , � i f . �' ril ,+e. • „ ,-(. �/7 1, ,f f T ...< —. '.1. •r r �, , i.�'3 .. P'ii' :17e •• .'. r � t. -, Ise.. r ,� ,'t +t r" 'r.'7i, i r f•. .r r e' '+ ..� . '1.! ,. 'r .� '1 •I <i ,_f .`+' .,li . '' :�•41f1`: .. ' ,tlr ff;`J; � a°• - ., ! +. ,�. .. . 1. ').. �i:. r. j•}.� • � .!r, r.i r: •-t;3 �t .'-, Diu 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 http:/Ih2o.enr.state.nc.us/su/msi_maps.htm) 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. r • Original and one copy of the Stormwater Management Permit Application Form • Original and one copy of the Deed Restrictions & Protective Covenants Form • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP • Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR c� • Calculations & detailed narrative description of stormwater treatment/management • Copy of any applicable soil report • Three 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 NC5R 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, please complete this section. Designated agent (individual or firm):Quible & Associates, P.C. Mailing Address:P.O. Drawer 870 City:Kitty Hawk State:NC Zip:27949 Phone: (252 261-3300 Fax: (252 L 261-1260 Email:dadeel®quible.com _ VIII. APPLICANT'S CERTIFICATION I, (print or type name of person listed in General Information, item 2) lohn W. Dixon 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 wJ a approved plans, that the required deed restrictions and protective cove will b recorded, and that a roposed project complies with the requirements of 15A NCAC 2H .1000. Signature: �'/ Date: 7 Form SWU-101 Version 8.07 Page 4 of 4 Permit No. 1J L'� --> ( %� (to be provided by DWQ) o�e4 wa req�� ARASTORMWATER MANAGEMENT PERMIT APPLICATION FORM NCDENR 401 CERTIFICATION APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information, i. PROJECT INFORMATION Project Name Day Beacon #9 Contact Person David A. Deel, RE. Phone Number 252-261-3300 Date 11/512007 Drainage Area Number 1 Ii:DESIGN INFORMATION Site Characteristics Drainage area 63,058.00 fh Impervious area 48,684.00 ft2 Percent impervious 0.77 Design rainfali depth 1.0 in Peak Flow Calculations Is prelpost control of the 1-yr 24-hr peak flow required? 1-yr, 24-hf runoff depth 1-yr, 24-hr intensity Pre -development 1-yr, 24-hr runoff volume Post -development 1-yr, 24-hr runoff volume Pre/Post 1-yr, 24-hr peak flow control Storage Volume: Non -SR Waters Minimum design volume required Design volume provided Storage Volume: SR Waters 1-yr, 24-hr rainfall depth Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr runoff Minimum volume required Volume provided Soils Report Summary Soil type Infiltration rate SHWT elevation Basin Design Parameters Drawdown time Basin side slopes Basin bottom elevation Storage elevation Top elevation Basin Bottom Dimensions Basin length Basin width Bottom SA N (Y or N) in inlhr ft3lsec f131sec ft3lsec 4,017 f{3 4,2&r ft' OK foron-SR waters n,�.� IeCBlv ft, It ft3 pW Q Ur pgpJ # 0.52 Whr 2,00 fmsi 1.16 days OK 3 :1 OK 4.5C fmsl OK 5.70 fmsl 6.50 fmsl varies ft varies ft 2,822 ft' Form SW401-Infiltration Basin-Rev.1 Parts i. $ II. Design Summary, Page 1 of 2 Permit (to be provided by D WQ) Additional Information Total runoff volume captured by basin 1 15 ac-in OK Length of vegetative filter for overflow 45 ft OK Distance 10 structure nla ft OK Distance from surface waters 55 ft OK Distance from water supply well(s) nla ft OK Separation from impervious soil layer nla ft OK Naturaily occuring soil above shwt 2.5 ft OK Bottom covered with 4-in of dean sand? Y (Y or N) OK Recorded drainage easement provided? nla (Y or N) OK Capures all runoff at ultimate build -out? Y (Y or N) OK Bypass provided for larger storms? Y (Y or N) OK Pretreatment device provided Y Form SW401-Infiltration BaSin-Rev.1 Paris I. & II. Design Summary, Page 2 of 2 y r � Infiltration Basin Inspection and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Important maintenance procedures: - The drainage area will be carefully managed to reduce the sediment load to the infiltration basin. - Immediately after the infiltration basin is established, the vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). - No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the vegetation. - The vegetation in and around the basin will be maintained at a height of approximately six inches. After the infiltration basin is established, it will be inspected once a quarter and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of inspection and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblem: How I will remediate theproblem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to infiltration 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. The inlet device: pipe or The pipe is clogged (if Unclog the pipe. Dispose of the swale applicable). sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged (if applicable). Erosion is occurring in the Regrade the swale if necessary to swale (if applicable). smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion R-EcEn Nov 15 2007 DWQ PR03 # r � K � 'r ,# _ . � � , 1 ,+� � , � , 1 4 - 1 I ,I ' .�r r ., f � ' r .r ,r' • .. ,I I i 1 1 1 r5 I St i •.1 I I . .. . II ' J i � • � i I 1 1 � � I t i � r' � e y i I � , r 1 I r � 1 �. I -' � �� � .� � a � � 1 r I � . � i I I l.fi� � � �n' � � � r.j � J I -� 7 ,I� • I � � � L• ,, ' i j� 1 I I I ' r . ; � i � I •5 '� � I i ' � 1 1 i I • .. �� V ' ; r ! . 1 � � r . I ! . -; . , ;. � , { � f 1 .. ..ilk . , ' ... BMP element: The forebay The main treatment area The embankment The outlet device The receiving water Potential problem: Sediment has accumulated and reduced the depth to 75% of the original design depth. Erosion has occurred or riprap is displaced. Weeds are present. A visible layer of sediment has accumulated. Water is standing more than 5 days after a storm event. Weeds and noxious plants are growing in the main treatment area. Shrubs or trees have started to grow on the embankment. An annual inspection by an appropriate professional shows that the embankment needs repair. Clogging has occurred. The outlet device is Erosion or other signs of damage have occurred at the outlet. How I will remediate the Search for the source of the sediment and remedy the problem if possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Remove the weeds, preferably by hand. If pesticides are used, wipe them on the plants rather than Search for the source of the sediment and remedy the problem if possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Replace any media that was removed in the process. Revegetate disturbed areas immediately. Replace the top few inches of filter media and see if this corrects the standing water problem. If so, revegetate immediately. If not, consult an appropriate professional for a more extensive repair. Remove the plants by hand or by wiping them with pesticide (do not Remove shrubs or trees Make all needed repairs. Clean out the outlet device. Dispose of the sediment off -site. Repair or replace the outlet device. Contact the NC Division of Water Quality 401 Oversight Unit at 919- 733-1786. ' Ali• I r �i 1 r. -! Ins � I � 1 S :i l a�° ,� ,. ,i , ,� � i .. i"'�l I! I I , i .r „ 11' i � '� �i� ri � ,r f. , r • r:. r �,• .� I,,,. •f ., , r i r �' ,•1 i it .,. � ,, �, , � '� , �� r ' i i r � . l i . 3 . � • � } _ .. J _ rt I 1 � .. 1 i r _ ' a I � , is � � r, ,I. ,ar ' •t r�l ' i. r r , � � I. ai , , � , .r � � , I I 1�1 . � a �' .!�' r 1 .. • r � • � • � s 1 � ' 1' ! , f. � .. e � !.� r I'I ' .j 1 rl. � r.. � !I. .� 1 ii •,a �' . .f r •�, . ' ,� � I. r f �� r l _ ' ,3 el.� � . �. ' !. iI a � f I , i' � s r , � ., ii. ._ i. .� r .r I. � I �� I I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name:John W. Dixon Title: Registered Agent, Day Beacon #9, LLC Address:P.O. Box 1327 Na s Head NC 27959 Phone Signa 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. I, Judith M. Sharber a Notary Public for the State of North Carolina , County of Dare do hereby certify that John W. Dixon personally appeared before me this 6 t h day of November 2007 , and acknowledge the due execution of the forgoin wet detention basin maintenance requirements. Witness my hand and official seal, A . .Notary Pubk SEAL My commission expires 03/28/2011 �� -- .�, - -- ._ t r 1 � i � �.� t _ ti ._ . � • ^' �� s t J � � A 4� •• C L 1 � _ , ice, ••'� Stormwatelr Management Maintenance Plan. Modification to Stormwater Permit SW7051110 Day Beacon #9 January 7, 2008 Infltration Basin Maintenance This modification proposes to install a small swimming pool over top of one of the three interconnected infiltration basins on the project site. The pool and pool deck will be elevated and supported on pilings such that the storage within the infiltration basin is preserved and access is provided beneath the pool and pool deck for maintenance. A treated wood lattice will be installedalong the perimeter of the pool deck as a visual screening_ Four 4' wide gates will be installed in the lattice screening for maintenance access (one on each side). The footprint of the pool deck resides entirely within the footprint of the basin bottom, All basin areas outside of the pool deck footprint, including all of the infiltration basin side slopes will be sodded for stability. The basin bottom underneath the pool deck footprint will consist of a level, clean Layer of sand. In addition to all of the maintenance procedures outlined in the Infiltration Basin Inspection and Maintmance Agreement, maintenance within the pool deck footprint shall consist of quarterly monitoring of sedimment accumulation and remediation, as necessary. On. quarterly inspections, authorized personnel shall access the bottom of the infiltration basin udder the pool deck viaone of the four access doorways and shall measure accumulated sediment from an identified benclunark pouit on the pool deck support columns. Any trash or debris is to be reproved and any evidence of erosion is to be investigated and repaired. When sediment has accumulated to a depth of 4 inches (75% of design depth of basin), then the sedirncnt shall be removed and the basin grades restored to the design grades. This shall be accomplished utilizing manual labor (shovels and wheelbarrows) within the swimming pool deck footprint, Underneath the actual pool footprint, a .long handle (8' long) aluminum landscape rake shall be utilized io pull sediment from underneath the pool footprint to the sides (pool is 16' wide along its short axis) where it can be collected and removed. Material removed from the infiltration basin bottom shall be landtilled. This maintenance agreement specifically addresses maintenance of the portion of the infiltration basin Under the proposed pool and pool deck footprint and is not intended to replace maintenance procedures also required by the previously executed "Infiltration Basin and Maintenance Agreemear, submitted with the Permit Modification Request. Both documents are intended to govern the maintenance of the infiltration basin. Page l of 2 REC-.r-JL"TVED JAN DWQ PROD # :i Stormwatelr Management Maintenance Flan Modification to Sterinwater Permit SW7051i10 Day Beacon #9 January 7, 2008 Print Name:-Yr. Joht1W._DixoA Title: Rerstgrcd A e t and WemberDgyBeacon #9 LL Phone: (252Mi::::::: Signature: Datc: Note: The lega11y responsible party should notbe a homeowners association unleag more than 50% of the lots have been sold and a resident of the subdivision has been named the prcsident. 1, -JnnuL) /T/f M. .k , a Notary Public for the State of County of 111-�, do hereby certify that Z/ personally appeared before me this 13 day of �- O& , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official sealc,)Ez) SEAL My comtrtission expires.3/z-4e7 Page 2 of 2 p,-EC,F,IVED ,AN DwQ PBOJ # w (� �D W A rFy Michael 17. Easley, Governor QG William G. Ross Jr., Secretary North C-drolina Department of Environment and Natural Resources -C Alan W. Klimek, P.E. Director Division of Water Quality December 19, 2005wwr ' 4. e. ,,; Mr. John W. Dixon, Managing Partner Dixon & Hoyle Partnership PO Box 1327 Nags Head, NC 27959 Subject: Stormwater Permit No. SW7051110 Day Beacon #9 High Density Redevelopment Project Beaufort County Dear Mr. Dixon. - The Washington Regional Office received a complete Stormwater Management Permit Application for Day Beacon #9 on December 19, 2005. 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. SW7051110 dated December 19, 2005, for the construction of the subject project. This permit shall be effective from the date of issuance until December 19, 2015, 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. If you have any questions, or need additional information concerning this matter, please contact Scott Vinson, or me at (252) 946-6481. Incerely, Al Hodge Regional Supervisor Surface Water Protection AH/sav: C:ISTORMWATIPERMIT1SW7051110 cc: David A. Deel, PE Beaufort County Building Inspections Washington Regional Office Central Files Section Npl hCaro Natural North Carolina Division of Water Quality Washington Regional Office Phone (252) 946-6481 FAX (252) 946-9215 Internet: h2o.enr.state.nc.us 943 Washington Square Mail, Washington, NC 27889 An Equal Opportunq/Affirmative Action Employer— 50% Recycled110% Post Consumer Paper Customer Service 1-877-623-6748 State Stormwater Management Systems Permit No. SW7051110 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY REDEVELOPMENT 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 Dixon & Hoyle Partnership Day Beacon #9 Beaufort County FOR THE construction, operation and maintenance of an infiltration basin 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 December 19, 2015, and shall be subject to the following specified conditions and limitations: 1. 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. This development is 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.6 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 48,426 square feet of impervious area. 3. The tract will be limited to 63,803 square feet of built -upon area per application and approved plans under redevelopment. The existing impervious area that has been removed from the site totaled 95,936 square feet. 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 all such required easements, in accordance with the approved plans. Page 2 of 7 State Stormwater Management Systems Permit No. SW7051110 5 The following design criteria have been provided in the infiltration basin and must be maintained at design condition: a. Site Area, acres: 2.20 b. Drainage Area to Basin, ft2: 63,058 C. Total Impervious Surfaces, ft2: 48,426 d. Design Storm, inches: 1 e. Basins Depth, feet: 1.20 f. Bottom Elevation, FMSL: 4.50 g. Bottom Surface Area, ft2: 2,822 h. Bypass Overflow Elevation, FMSL: 5.70 i. Permitted Storage Volume, ft3: 4,203 j. Type of Soil: Urban Land 1 Sands k. Expected Infiltration Rate, inlhr: 0.52 I. Seasonal High Water Table, FMSL: 2.00 M. -Time to Draw Down, hours: 27.7 n. Receiving Stream/River Basin: Pantego Creek 1 Tar -Pamlico o. Stream Index Number: 29-34-34-(2) P. Classification of Water Body: "SC; NSW' II. SCHEDULE OF COMPLIANCE 1. 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. 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 bypass structure, infiltration media, flow spreader, catch basins, piping and vegetated filter. g. A clear access path to the bypass structure must be available at all times. Page 3 of 7 State Stormwater Management Systems Permit No. SV 7051110 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. 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. 6. 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. 7. 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. B. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 9. 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 owriership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease 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. 10. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the.approved plans, prior to construction. 11. 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. 12. 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. Page 4 of 7 �r I State Stormwater Management Systems Permit No. SV 7051110 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) having 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 notify the Division any name, ownership or mailing address changes within 30 days. Permit issued this the 19th day of December, 2005. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION �> --- L� CE4 _ for Alan K Klime ,Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 i. State Stormwater Management Systems Permit No. SV 7051110 Day Beacon #9 Stormwater Permit No. SW7051110 Designer's Certification 1, , 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 included in the Certification. Noted deviations from approved plans and specification: Signature Registration Number Date SEAL Page 6 of 7 State Stormwater Management Systems Permit No. SVV7051110 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 bypass structure weir elevation is per the approved plan. 6. The bypass structure is located per the approved plans. 7. A Trash Rack is provided on the 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. All required design depths are provided. 13. All required parts of the system are provided. .14. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Washington Regional Office Beaufort County Building Inspections Page 7 of 7