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HomeMy WebLinkAboutSW7050101_CURRENT PERMIT_20050803STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW 7o�O�(%� DOC TYPE CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE DOC DATE k,422&2:S YYYYMMDD �0F W A TF9� Michael F. Easley, Governor O G William G. Ross, Jr., Secretary co r North Carolina Department of Environment and Natural Resources 0 'C Alan W. Klimek, P.E. Director Division of Water Quality August 1,2005 Mr. Michael Hawkins, Member/Manager J&H Investments of New Bern, LLC RECEUVED PO Box 15069 New Bern, NC 28561 Subject: Stormwater Permit No. SW7 050101 AUG 0 3 2005 J & H Commercial High Density Project IDWQ-WAR® Craven County Dear Mr. Hawkins: On behalf of the Washington Regional Office, the Wilmington Regional Office received a complete Stormwater Management Permit Application for J & H Commercial on June 29, 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. SW7 050101 dated August 1, 2005, for the construction of the subject project. This permit shall be effective from the date of issuance until August 1, 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 sixty (60) 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 Al Hodge at (252) 946-6481. Sincer ly, dward Beck Regional Supervisor Surface Water Protection Section ENB/arl: S:IWQSISTORMWATIPERMIT1SW7050101.aug05 cc: John G. Thomas, P.E., Craven County Building Inspections Al Hodge, Regional Supervisor, SWPS, WaRO Washington Regional Office File Central Files North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone (910) 796-7215 Customer Service 1 -877-623-6748 Wilmington Regional Office Wilmington, NC 28405-3845 FAX (910) 350-2004 Internet: h2o.enr.state.nc.us One NorthCarolina An Equal Opportunity/Afilrmative Action Employer- 50% Recyded110% Post Consumer Paper Aaloall y State Stormwater Management Systems Permit No. SW7 050101 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Michael Hawkins & J&H Investments of New Bern, LLC J & H Commercial 2305 East US 70, New Bern, Craven County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules) and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until August 1, 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 54,800 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. Page 2 of 7 State Stormwater Management Systems Permit No. SW7 050101 6. The following design criteria have been provided in the wet detention pond and must be maintained at design condition: a. Drainage Area, acres: 1.91 Onsite, ft : 83,205 Offsite, ft2: 0 b. Total Impervious Surfaces, ft2: 54,800 C. Design Storm, inches: 1 d. Pond Depth, feet: 5.0 e. TSS removal efficiency: 90% f. Permanent Pool Elevation, FMSL: 46.50 g. Permanent Pool Surface Area, ft2: 7,020 h. Permitted Storage Volume, ft3: 11,833 i. Temporary Storage Elevation, FMSL: 48.0 j. Controlling Orifice: 1 "O pipe k. Permitted Forebay Volume, ft3: 2,579 I. Receiving Stream/River Basin: Brice Creek 1 Neuse M. Stream Index Number: NEU10 27-101-40-(7) n. Classification of Water Body: "SC Sw NSW' IL 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 outlet structure, orifice device, flow spreader, catch basins and piping. g. Access to the outlet structure must be available at all times. Page 3of7 State Stormwater Management Systems Permit No. SW7 050101 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. 5. Decorative spray fountains will be allowed 'in the stormwater treatment system, subject to the following criteria: a. The fountain must draw its water from less than 2' below the permanent pool surface. b. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. c. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for a fountain in this pond is 116 horsepower. 6. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 8. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 9. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 10. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, 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. 11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 12. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. Page 4 of 7 State Stormwater Management Systems Permit No. SW7 050101 13. 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. 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 1 st day of August 2005. NORTH ROLINA ENVIRONMENTAL MANAGEMENT COMMISSION for Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No. SW7 050101 J&H Commercial Stormwater Permit No. SW8 SW7 050101 Craven County 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 6of7 State Stormwater Management Systems Permit No. SW7 050101 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The outlet/bypass structure elevations are per the approved plan. 6. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet/bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 15. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office Craven County Building Inspections Page 7 of 7 OFFICE USE ONLY Date Received Fee Paid Permit Number .3.22- ZW5 S 4Z[-) 0 SG��OSvIGI State of North Carolina 6VCRIGONAI 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): H ::EA u L&ra a;1 [ Q-AA--2 f3ef_a . t_LL 2. Print Ownerl/Signing Official's name andl title (person legally responsible for facility and compliance): 3. Mailing Address for person listed in item 2 above: AKZ City: N e e_� a,e A P_� State: Zip: Z 9 ��_6 E Telephone Number: ( Z$Z ) �'� ]- 5 SZ:50 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): t f4 C� 5. Location of Project (street address): a 5 o 5 c,+ LA City: County: C {Z A.Q&-N, 6. Directions to project (from + Tnearest a major ri�ina(1ersecct�io-nt)K�: f --? [C • d� U's10 72Ga4 7. Latitude:_}] .rj 0D ,3 I $ �{ %*-I Longitude: 7 '7 �1 I Z 3 -Ie�­l of project 8. Contact per on w`ho can answer q ions about the project: Name h�l (�7 d � Telephone Numher, Z5Z )K; 3 1? Zr% Z17 II. PERMIT INFORMATION: 1. Specify whether project is (check one): _✓New Renewal Modification Form SVVU-101 Version 3,99 Page 1 of 4 , 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 �(Zeck0 �):Low Density Density Redevelop General Permit 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. 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. 2. Stormwater runoff from this project drains to the 3. Total Project Area: 1 • 9 I d acres 5. How many drainage areas does the project have? 9- 4- S e_ River basin. 4. Project Built Upon Area: & b % 6. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. Basin Information Drainage Area I Drainage Area 2 Receiving Stream Name ii�, .- � ICQ eel Receiving Stream Class SG SW N SW Drainage Area cl I 0 Ci G Existing Impervious" Area — U Proposed Impervious*Area A , Z S`8 �S�t $vDST Impervious* Area (total) Impervious` Surface Area Drainage Area I Drainage Area 2 On -site Buildings 2 800 5 On -site Streets _0 — On -site Parking c� ZD 5 On -site Sidewalks O 5 76 Other on -site _ 4 — Off -site _ p ..- Total: — t.r goo %'20 Total: * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-i0l Version 3.99 Page 2 of 4 7. How was the off -site impervious area listed above derived?��(/ IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS The following italicized deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to 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. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the State. 2. No more than square feet of any lot shall be covered by structures or impervious materials. Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the water surface of swimming pools. 3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to construction. 5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted. By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Form SWU-102 Wet Detention Basin Supplement Form SWU-103 Infiltration Basin Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-101 Version 3.99 Page 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 Regional Office. Please indicate that you have provided the following required information by next to each item. • Original and one copy of the Stormwater Management Permit Application I • One copy of the applicable Supplement Form(s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment/management • Two copies of plans and specifications, including: - Development/Project name - Engineer and firm -Legend - North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property/project boundary - Location 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 calculation - 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. PA Designated agent (individual or firm): d �� .�hnwi� y�.,c¢rtwc Mailing Address:_ City; _—q„� Cr r•3 State:_ Zip: �� 3 Phone: ( _7 5Z ) 6 3 7 Z }7 2 'z Fax: ( Z S- Z ) cy Z 4' 4 VIII. APPLICANT'S CERTIFICATION (print or type name of person listed in General Information, item 2) ,`_� L-2- L T�>, � �C", N S 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 covenants will be recorded, and that the proposed project complies with the requirements of 15A NCAC ZH .1000. Signature: ' ` ' c Date: Farm SWU-l01 Version 3.99 Page 4 of 4 Permit No. fW 7 050lu (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality CRIGIVE STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION Project Name: C- r�/ndt 2 C Contact Person: d Phone Number: ( ZC'Z) 3n -Z7 Z'7 For projects with multiple basins, specify which basin this worksheet applies to: elevations Basin Bottom Elevation ft. (floor of the basin) Permanent Pool ElevationG, S`n ft. (elevation of the orifice) Temporary Pool Elevation en d ft. (elevation of the discharge structure ovetflow) areas Permanent Pool Surface Area ` 0 Z C] sq. ft. (water surface area at the orifice elevation) Drainage Area 1.110 ac. (on -site and off -site drainage to the basin) Impervious Area . Z 58 ac. (on -site and off -site drainage to the basin) volumes Permanent Pool Volume _ / �f .S 8d cu. ft. (combined voliane of main basin and forebay) Temporary Pool Volume f 1, 5 9 3 cu. ft. (volume detained above the permanent pool) Forebay Volume ZSq,9 a-4-3— S cu. ft. (approximately 20% of total volume) Other parameters S A/DA I Diameter of Orifice Design Rainfall Design TSS Removal 2 Z (surface area to drainage area ratio from DWQ table) J in. (2 to 5 day temporary pool draw -down required) in. U % (minimum 85% required) Form S WU-102 Rev 3.99 Page I of 4 Footnotes: t When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR 13MP manual provides design tables for both 85% TSS removal and 90% TSS removal. II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applip6r )X It ' 'a s The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). forebay volume is approximately equal to 20% of the basin volume. c. The temporary pool controls runoff from the design storm event. d. The temporary pool draws down in 2 to 5 days. c. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) f. The basin length to width ratio is greater than 3:1. C s P� r2��,-�� �a°-•� The basin side slopes above the permanent pool are no steeper than 3:1. IAA submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). i. Vegetative cover above the permanent pool elevation is specified. j. A trash rack or similar device is provided for both the overflow and orifice. k. A recorded drainage easement is provided for each basin including access to nearest right- of-way. 1. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. m. A mechanism is specified which will drain the basin for maintenance or an emergency. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one) 0 does d not incorporate a vegetated filter at the outlet. This system (check one) 0 does ees not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed oil in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads ? •'?C—feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 3 ."K'— feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the blanks) Permanent Pool Elevation g4-So Sediment Ren oval El. `!2. i<-- 175 ° Sedi __♦__ mentRemavalElevation 75% t-I•Z•7�Bottom Ele�a- tion°lo------------------------------------------- ----- - Bottom Elevation 4�•S`� 25% / FOREBAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. Form SWU-102 Rev 399 Page 3 of 4 7. All components of the wet detention basin system shall be maintained in good working order. 1 acknowledge and agree by my signature below that I am responsible for the performance of the seven maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: i L (aQ Title: @tkr—c- . Address: G. ox / 4. ._cNC e5 Phone: ZS. Z ; G `? 1— S SG& , Signature: Date: _ Z I 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. a Notary Public for the State of NOXA Crf►-A& (-^,I , County of _ j� t,�..� do here y certify that : e- a { a ws S personally appeared before me this Z day of .� _ , Z�! --,and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, Q &I'SN CO -LOOI° M SEAL My commission expires r - Zt -09 Form SWU-102 Rev 3.99 Page 4 of 4 State Stormwater Management Systems Permit No. SW7 050101 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT AUG p 3 �, -. i ®WQ-WARU 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 Michael Hawkins & J&H Investments of New Bern, LLC J & H Commercial 2305 East US 70, New Bern, Craven County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until August 1, 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 54,800 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. Page 2 of 7 State Stormwater Management Systems Permit No. SW7 050101 The following design criteria have been provided in the wet detention pond and must be maintained at design condition: a. Drainage Area, acres: 1.91 Onsite, ft : 83,205 Offsite, ft2: 0 b. Total Impervious Surfaces, ft2: 54,800 C. Design Storm, inches: 1 d. Pond Depth, feet: 5.0 e. TSS removal efficiency: 90% f. Permanent Pool Elevation, FMSL: 46.50 g. Permanent Pool Surface Area, ft2: 7,020 h. Permitted Storage Volume, ft3: 11,833 i. Temporary Storage Elevation, FMSL: 48.0 j. Controlling Orifice: 1110 pipe k. Permitted Forebay Volume, ft3: 2,579 I. Receiving Stream/River Basin: Brice Creek 1 Neuse M. Stream Index Number: NEU10 27-101-40-(7) n. Classification of Water Body: "SC Sw 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 outlet structure, orifice device, flow spreader, catch basins and piping. g. Access to the outlet structure must be available at all times. Page 3 of 7 State Stormwater Management Systems Permit No. SW7 050101 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. 5. Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following criteria: a. The fountain must draw its water from less than 2' below the permanent pool surface. b. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. c. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for a fountain in this pond is 116 horsepower. 6. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 8. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 9. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 10. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount,of built -upon area or to the drainage area. e. Further subdivision, acquisition, 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. 11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 12. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. Page 4 of 7 State Stormwater Management Systems Permit No. SW7 050101 13. 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. 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 parks of the permit. 9. The permittee shall notify the Division any name, ownership or mailing address changes within 30 days. Permit issued this the 1 st day of August 2005. NORTH CA LINA ENVIRONMENTAL MANAGEMENT COMMISSION M`l-3 for Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 WET DETENTION POND ANALYSIS FILE NAME: S:IWQSkPOND\SW7050101.feb05.WK1 PROJECT#: SW7 SW7050101.feb05 REVIEWER: PROJECT NAME: J & H Commercial Site DATE: 22-Feb-05 Receiving Stream: Neuse River Class: unable to locate Drainage Basin: Neuse Index No. ? Site Area 1,91 acres Drainage Area :1183205 square feet Area in Acres 1.91 IMPERVIOUS AREAS Buildings Parking SW TOTAL SURFACE AREA CALCULATION Rational C 12800.00 square feet 1.00 42000.00 square feet 0.90 square feet square feet square feet square feet square feet square feet Rational Cc= 0.68 % IMPERVIOUS 65.86% SA/DA Ratio 4.21% Des. Depth 4 Req. SA 3503 sf TSS: 85 P ro v. SA verified VOLUME CALCULATION * place a "11" in the box if Rational is used I i. 1 V Pj.:14 Req. Volume cf r Vol. Prov. at DP ,)96 cf ORIFICE CALCULATION FOREBAY Perm. Pool Volume= 8500 Req. Forebay Volume= 1700 Provided Volume= 1500.00 Percent= Elevation Area Inc. Vol. Acc. Vol. 46.50 3600,00 0.00 48.00 4795.00 6296.25 6296.25 Avg. Head = 0.73 ft Q2 Area = 0,95 sq. inches Flow Q2, cfs 0.027 cfs Q5 Area = 0,38 sq. inches Flow Q5, cfs. 0.011 cfs; Orifice Area 0.79 sq. inches No. of Orifices .. .. .. .. .. ..... Q= 0.022 cfs Diameter, inches j i.i1.1:1::i. i weir H x W in x in Drawdown = v. .4; days Surface Area @DP = 4795 sq. ft. Falling Head Drawdown = 4.5 days C: 3.342916667 Lz -0.146 COMMENTS Surface Area , Volume and Orifice are within Design Guidelines WET DETENTION POND ANALYSIS FILE NAME: S:IWQSIPONDISW7050101.may05.WK1 PROJECT #: SW7 SW7050101.may05 REVIEWER: L. Lewis PROJECT NAME: J & H Commercial Site DATE: 01-Jun-05 Receiving Stream: Neuse River Class: unable to locate Drainage Basin: Neuse Index No. ? Site Area 1.91 acres Drainage Area 83205''0 ` square feet Area in Acres 1.91 IMPERVIOUS AREAS Rational C Buildings 12800.00 square feet 1.00 Parking 42000.00 square feet 0.90 SW square feet square feet square feet square feet square feet TOTAL �11'54800100'I square feet Rational Cc= 0.68 SURFACE AREA CALCULATION % IMPERVIOUS 65.86% Des. Depth 5 TSS: 90 SA/DA Ratio 4.71% Req. SA 3919 sf Prov. SA . li _ 7020':I A verified VOLUME CALCULATION w place a "1" in the box if Rational is used Rational ?` Des. Storm Rv= Bottom SA at bottom Perm. Pool Design Pool Storage met @elev Req. Volume Vol. Prov. at DP CE CALCULATION 1 00'r inches 0.643 41.5 msl 860 sf 650,111 msl 48 msl 47.09 msl 4691911 cf 1833�i cf FOREBAY Perm. Pool Volume= Req. Forebay Volume= Provided Volume= Percent= Elevation Area 46.50 7020.00 48.00 8757.00 147-00-1 �530 3940 -4445:00. Inc. Vol. 11832.75 Avg. Head = 0,73 ft Q2 Area = 0.95 sq. inches Flow Q2, cfs 0,027 cfs Q5 Area = 0.38 sq. inches Flow Q5, cfs 0.0,11 cfs Orifice Area 0.79 sq. inches No. of Orifices i° ili i, 1' Q= 0.022 cfs Acc. Vol. 0.00 11832.75 Diameter, inches 1'.00 weir H x W in x „' „ in Drawdown = ;!;I .1� days Surface Area @DP = 8757 sq. ft. Falling Head Drawdown = 8.5 days C= 3.328333333 L= -0.146 COMMENTS Surface Area , Volume and Orifice are within Design Guidelines. WET DETENTION POND ANALYSIS FILE NAME: S:IWQSIPOND1SW7050101.may05.WK1 PROJECT #: SW7 SW7050101.may05 REVIEWER: L. Lewis PROJECT NAME: J & H Commercial Site DATE: 31-May-05 Receiving Stream: Neuse River Class: unable to locate Drainage Basin: Neuse Index No. ? Site Area 1.91 acres Drainage Area "83205 O0 square feet Area in Acres 1.91 IMPERVIOUS AREAS Rational C Buildings 12800.00 square feet 1.00 Parking 42000.00 square feet 0.90 SW square feet square feet square feet square feet square feet TOTAL 1480 00'' square feet SURFACE AREA CALCULATION Rational Cc= 0.68 % IMPERVIOUS 65.86% SAIDA Ratio 4.71 % Des. Depth 5 Req. SA 3919 sf TSS: 90 Prov. SA F5 360'C'' sf, verified VOLUME CALCULATION * place a "1" in the box if Rational is used Rational ?* 1 Des, Storm ;,_',!,i,,€0 inches Rv= 0.643 Bottom 41.5 msl Perm. Pool 6 50 msl Design Pool 48 msl Storage met @elev 47.09 msl Req. Volume 40 cf Vol. Prov. at DP ii11 1833 cf ORIFICE CALCULATION FOREBAY Perm. Pool Volume= 14580 ✓ Req. Forebay Volume= 2916 Provided Volume= 2933.00 Percent= 20 14�a .i` Elevation Area Inc. Vol. Ace. Vol. 46.50 7020.00 0.00 48.00 8757.00 11832.75 11832.75 Avg. Head = 0.73 ft Q2 Area = 0,95 sq. inches Flow Q2, cfs 0.027 cfs Q5 Area = 0.38 sq. inches Flow Q5, cfs 0,011 cfs Orifice Area 0.79 sq. inches No. of Orifices 11 lii 1 Q= 0.022 cfs Diameter, inches iliiliil6fl weir H x W in x !i''ii' I'i .' in Drawdown = " .i2 4`, days Surface Area @DP = 8757 sq. ft. Falling Head Drawdown = 6.7 days C 3,328333333 L= -0.146 COMMENTS Surface Area , Volume and Orifice are within Design Guidelines WET DETENTION POND ANALYSIS FILE NAME: S:1WQSIPOND1SW7050101.ju105.WK1 PROJECT* SW7 SW7050101.jul05 REVIEWER: L. Lewis PROJECT NAME: J & H Commercial Site DATE: 29-Jul-05 z "13r,ceG►-eel(- s?-- Sw rjsw Receiving Stream: •#eag -River Class: Drainage Basin: Neuse Index No. ? UGWO 2'7401— 4J-0) Site Area 1.91 acres Drainage Area :i83205'.10E square feet Area in Acres 1.91 IMPERVIOUS AREAS Rational C Buildings 12800.00 square feet 1.00 Parking 42000.00 square feet 0.90 SW square feet square feet square feet square feet square feet TOTAL Fri 5 8Qt M.: square feet Rational Cc= 0,68 SURFACE AREA CALCULATION % IMPERVIOUS 65.86% Des. Depth 5 TSS: 90 VOLUME CALCULATION Rational ?' 1 Des. Storm i''70:„ inches Rv= 0.643 Bottom 41.5 msl SA at bottom 860 sf Perm. Pool 6:5DH msl Design Pool 48 msl Storage met @elev 47.09 msl Req. Volume 690 cf Vol. Prov. at DP f 1'iu 11 & a cf ORIFICE Avg. Head = Flow Q2, cfs Flow Q5, cfs No. of Orifices Diameter, inches Drawdown = LATION 0.73 ft 0.027 cfs 0.0-11 cfs C= 3,328333333 weir HxW days SA/DA Ratio 4.71% Req. SA 3919 sf Prov. SA 70, Li .'. sf, verified . place a "1" in the box if Rational is used FOREBAY Perm. Pool Volume= 14580 Req. Forebay Volume= 2916 Provided Volume= 2579.00 Percent= IIJ 1 E7`�o' Elevation Area Inc. Vol. Acc. Vol. 46.50 7020.00 0.00 48.00 8757.00 11832.75 11832.75 Q2 Area = 0.95 Q5 Area = 0.38 Orifice Area 0.79 Q= 0.022 in x Surface Area @DP = Falling Head Drawdown = L= -0.146 COMMENTS Surface Area , Volume and Orifice are within Design Guidelines. sq. inches sq. inches sq. inches cfs in 8757 sq. ft. 8.5 days ROY COOPER NORTH CAROLINA Governor Environmental Quality MICHAEL S. REGAN Secretary WILLIAM E. (TOBY) VINSON, JR Interim Director December 27, 2018 J & H Investments of New Bern, LLC Attention: Mr. Michael Hawkins, Manager P.O. Box 15069 New Bern, NC 28561 Dear Mr. Hawkins: If CA 7� Subject: Stormwater Permit Renewal Stormwater Management Permit SW7050101 J & H Commercial Craven County A Division of Energy, Mineral, and Land Resources file review has determined that Stormwater Permit SV 7050101 for a stormwater treatment system consisting of a wet detention pond serving a commercial building located at 2305 East Hwy 70 in New Bern, NC expires on August 1, 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. Also, it was noted in the file review that a designer's certification that the project was constructed in accordance with the approved plans as required by the permit has not been submitted. Please include this with your application. Permit application forms for renewal can be found on our website at: httns://den.ne.,ov/about/divisi_ons/enerf-,v-mineral-land-resources/enerp-v-mineral-lancl- rsiesfstorrnwater-i)rogram./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 can e-mail you a copy of the renewal application. You can request a copy by e-mailing me at roger.thorpe@a ncdenr.gov. Sincerely, Roger K. Thorpe Environmental Engineer �D_F�� 'gR7r'�C.UNn o.P.nswai�w..�ei q�exir� Norih Carolina Department of Environmental Quality I Division of Energy. Mineral and Land Resources Washington Regional Mce 1943 Washington Square Mail I Washington, North Carnlfna 27889 252.946,6481