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HomeMy WebLinkAboutSW8070551_Historical File_20080421 0� wH A rF bin,,....,. QG Michael F.Easley,Governor William G.Ross Jr.,Secretary f North Carolina Department of Environment and Natural Resources R Coleen H.Sullins Director Division of Water Quality April 21, 2008 James M. Davis Jr., Member Shadowcreek Estates, LLC P.O. Box 4505 Emerald Isle NC, 28594 Subject: Stormwater Permit No. SW8 070551 Shadow Creek Estates Low Density Subdivision with a Curb Outlet System Onslow County Dear Mr. Davis: The Wilmington Regional Office received a complete Stormwater Management Permit Application for Shadow Creek Estates on April 10, 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. SW8 070551, dated April 21, 2008, for the construction of the subject project. This permit shall be effective from the date of issuance until rescinded and shall be subject to the conditions and limitations as specified therein, and does not supercede any other agency permit that may be required. 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 either David Cox or me at (910) 796-7215. Sin rely, (Salt' dward Beck Regional Supervisor Surface Water Protection Section ENB/dwc: S:IWQS\STORMWAT IDERMIT1070551.oct07 cc: David K. Newsome P.E. Onslow County Inspections Division of Coastal Management David Cox Wilmington Regional Offices Doug Huggett, DCM Central Files Nc rthCaroli a 1Vaturally North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone(910)796-7215 Customer Service Wilmington Regional Office Internet: www.ncwaterqualitv.org Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer-50%Recycled/10%Post Consumer Paper State Stormwater Management Systems Permit No. SW8 070551 Mod. STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT LOW DENSITY DEVELOPMENT WITH A CURB OUTLET SYSTEM 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 James M. Davis, Jr. & Shadowcreek Estates, LLC Shadow Creek Estates Queens Creek Rd., Swansboro Onslow County FOR THE construction, operation and maintenance of a 25% low density subdivision with a curb outlet system in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stor.►nwater 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. The Permit shall be effective from the date of issuance until rescinded and shall be subject to the following specific conditions and limitations: I. DESIGN STANDARDS 1. The project is permitted for 54 lots, each limited to a maximum of 4,119 square feet of built-upon area, as defined by the stormwater rules, and as indicated in the approved plans. CAMA regulations may reduce the built-upon area for those lots within the AEC. 2. The overall tract built-upon area percentage for the project must be maintained at 25%, per the requirements of Section .1005 of the stormwater rules. 3. This project proposes a curb outlet system. Each designated curb outlet swale or 100' vegetated area shown on the a proved plan must be maintained at a minimum of 100' long, maintain 5:1 approved side slopes or flatter, have a longitudinal slope no steeper than 5/o, carry the flow from a 10 year storm in a non-erosive manner, maintain a dense vegetated cover, and be located in either a dedicated common area or a recorded drainage easement. 4. No piping shall be allowed except those minimum amounts necessary to direct runoff beneath an impervious surface such as a road or under driveways to provide access to lots. 5. Runoff conveyances other than the curb outlet system swales, such as perimeter ditches, must be vegetated with side slopes no steeper than 3:1 (H:V). 6. Approved plans and specifications for projects covered by this permit are incorporated by reference and are enforceable parts of the permit. Page 2 of 5 State Stormwater Management Systems Permit No. SW8 070551 Mod. II. SCHEDULE OF COMPLIANCE 1. Curb outlet swales, vegetated areas and other vegetated conveyances shall be constructed in their entirety, vegetated, and be operational for their intended use prior to the construction of any built-upon surface, per the approved plans 2. During construction, erosion shall be kept to a minimum and any eroded areas of the swales or other vegetated conveyances will be repaired immediately. 3. The permittee shall at all times provide the operation and maintenance necessary to operate the permitted stormwater management systems at optimum efficiency to include: a. Inspections b. Sediment removal. c. Mowin9, and revegetating of the side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans and specifications. f. Cleaning and repair of catch basin grates, flumes, piping, and the flow spreader mechanism. g. Maintenance of level spreaders. 4. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to the approved plans, regardless of size. b. Project name change. c. Transfer of ownership. d. Redesign or addition to the approved amount of built-upon area or to the drainage area. e. Further subdivision, acquisition or sale of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought. f. Filling in, piping, or altering any vegetative conveyance shown on the approved plan. 5. The Director may determine that other revisions to the project should require a modification to the permit. 6. The permittee is responsible for verifying that the proposed built-upon area does not exceed the allowable built-upon area. Once the lot transfer is complete, the built-upon area may not be revised without approval from the Division of Water Quality, and responsibility for meeting the built-upon area limit is transferred to the individual property owner. 7. The permittee must certify in writing that the project's stormwater controls, and impervious surfaces have been constructed within substantial intent of the approved plans and specifications. Any deviation from the approved plans must be noted on the Certification. The permittee shall submit the Certification to the Division within 30 days of completion of the project. 8. The permittee shall submit all information requested by the Director or his representative within the time frame specified in the written information request. 9. Each lot in the subdivision covered by this permit will maintain a minimum 30 foot wide vegetative buffer between all impervious areas and surface waters. 10. Deed restrictions are incorporated into this permit by reference and must be recorded with the Office of the Register of Deeds prior to the sale of any lot. Page 3 of 5 State Stormwater Management Systems Permit No. SW8 070551 Mod. 11. All roof drains must terminate at least 30' from the Mean High Water mark. 12. Recorded deed restrictions must include, at a minimum, the following statements related to stormwater management: a. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW8070551, as issued by the Division of Water Quality under NCAC 2H.1000. b. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the Stormwater Management Permit. c. These covenants are to run with the land and be binding on all persons and parties claiming under them. d. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. e. Alteration of the drainage as shown on the approved plans may not take place without the concurrence of the Division of Water Quality. f. The maximum built-upon area per lot is 4,119 square feet. This allotted amount includes any built-upon area constructed within the lot property boundaries, and that portion of the right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina, driveways, and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. g. Filling in, piping or altering any 3:1 vegetated conveyances (ditches, swales, etc.) associated with the development except for average driveway crossings, is prohibited by any persons. h. Lots within CAMA's Area of Environmental Concern may have the permitted built-upon area reduced due to CAMA jurisdiction within the AEC. i. Filling in, piping or altering any designated 5:1 curb outlet swale or vegetated rea associated with the development is prohibited by any persons. j. A 30' vegetated buffer must be maintained between all built-upon area and the Mean High Water line of surface waters. k. All roof drains shall terminate at least 30' from the Mean High Water mark. Each designated curb outlet swale or 100' vegetated area shown on the approved plan must be maintained at a minimum of 100' long, maintain 5:1 (H:V) side slopes or flatter, have a longitudinal slope no steeper than 5%, carry the flow from a 10 year storm in a non-erosive manner, maintain a dense vegetated cover, and be located in either a dedicated common area or a recorded drainage easement. 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. Page 4 of 5 State Stormwater Management Systems Permit No. SW8 070551 Mod. 14. The permittee must submit a copy of the recorded deed restrictions within 30 days of the date of recording. 15. Prior to transfer of ownership, the swales must be inspected and determined to be in compliance with the permit. Any deficiencies will be repaired or replaced prior to the transfer. 16. The final plats for the project will be recorded showing all required swale easements and common areas, in accordance with the approved plans. III. GENERAL CONDITIONS 1. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an enforcement action by the Division of Water Quality, in accordance with North Carolina General Statutes 143-215.6A to 143-215.6C. 2. The permit issued shall continue in force and effect until revoked or terminated. 3. 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. 4. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations contained in Title 15A of the North Carolina Administrative Code, Subchapter 2H.1000; and North Carolina General Statute 143-215.1 et. al. 5. The permit is not transferable to any person or entity except after notice to and approval by the Director. The Director may require modification or revocation and reissuance of the permit to change the name and incorporate such other requirements as may be necessary. A formal permit transfer request must be submitted to the Division of Water Quality accompanied by the appropriate fee, documentation from both 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 the terms and conditions of this permit until the Division approves the permit transfer. 6. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances imposed by other government agencies (local, state and federal)which have jurisdiction. If any of those permits or approvals result in revisions to the plans, a permit modification must be submitted. 7. The permittee grants permission to DENR Staff to enter the property during business hours for the purposes of inspecting the stormwater control system and it's components. 8. The permittee shall notify the Division of Water Quality of any name, ownership or mailing address changes within 30 days. Permit issued this the 21st day of April, 2008. NOR CAROLINA if IRONMENTAL MANAGEMENT COMMISSION for Co een H. Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 5 I„_ DWQ USE ONLY -Date Received Fee Paid Permit Number . OO GSi05P74.56/ //?a a, State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I. GENERAL INFORMATION 1. Applicants name(specify the name of the corporation,individual,etc.who owns the project): Shadowcreek Estates,LLC 2. Print Owner/Signing Official's name and title(person legally responsible for facility and compliance): Tames M.Davis,Tr.,Member/Organizer 3. Mailing Address for person listed in item 2 above: P.O.Box 4505 City:Emerald Isle State:NC Zip:28594 Phone: (252 ) 422-9100 Fax: ( ) N/A Email:N/A 4. Project Name(subdivision,facility,or establishment name-should be consistent with project name on plans, specifications,letters,operation and maintenance agreements,etc.): Shadow Creek Estates 5. Location of Project(street address): Queens Creek Rd.(NCSR 1509) City:Swansboro County:Onslow 6. Directions to project(from nearest major intersection): From the intersection of US 172&NC Hwy 24,east on NC Hwy 24 for approx. 4.7 miles.Then turn right (south)onto Queens Creek Rd(NCSR 1509)for approximately 2.0 miles. Site is on left-hand side of the road. 7. Latitude:34°40'55"N Longitude:77°10'23"W of project 8. Contact person who can answer questions about the project: Name:David K.Newsom,PE,Crystal Coast Enginee Telephone Number: (910 ) 325-0006 Email:crystalcoasteng@bizec.rr.com II. PERMIT INFORMATION: 1. Specify whether project is(check one): ❑New ['Renewal ®Modification 2. If this application is being submitted as the result of a renewal or modification to an existing permit,list the existing permit numberSW8 070551 and its issue date(if known)October 11,2007 3. Specify the type of project(check one): ®Low Density OHigh Density ❑Redevelop ❑General Permit ❑Universal SMP ❑Other 4. Additional Project Requirements(check applicable blanks): RECEIVED Form SWU-101 Version 8.07 Page 1 of 4 MAR 1 4 zoQ$ BY: ❑CAMA Major ®Sedimentation/Erosion Control 0404/401 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. Low Density(<25%impervious)with Curb Outlets(flumes).Modification requested due to increase in number of lots&increased impervious area of cul-de-sacs,sidewalks&Turn Lane. 2. Stormwater runoff from this project drains to the White Oak River basin. 3. Total Site Area:33.06 acres 4. Total Wetlands Area:5.68 acres 5. 100'Wide Strip of Wetland Area:5.15 acres (not applicable if no wetlands exist on site) 6. Total Project Area**:32.53 acres 7. Project Built Upon Area:25 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 in the same format as below. Basin Information Drainage Area 1 • Drainage Area 2 Receiving Stream Name Queens Creek Stream Class&Index No. SA;HQW Drainage Area(sf) 1,417,007 Existing Impervious*Area(sf) -0- Proposed Impervious*Area(sf) 354,246 %Impervious*Area(total) 25% Impervious*Surface Area Drainage Area 1 Drainage Area 2 On-site Buildings(sf) 54 lots @ 4,119 sf ea=222,426 sf On-site Streets (sf) 96,342 On-site Parking (sf) -0- On-site Sidewalks (sf) 27,418 Other on-site (sf) r 1 1 9 Off-site (sf) ('5411.10LQM) 8,051 Total (sf): 354,246 *Impervious area is defined as the built upon area including,but not limited to,buildings,roads,parking areas, sidewalks,gravel areas,etc. **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?digital planimeter IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS 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 SWU-101 Version 8.07 Page 2 of 4 Form DRPC-1 High Density Commercial Subdivisions Form DRPC-2 High Density Developments with Outparcels "Form DRPC-3 High Density Residential Subdivisions Form DRPC-4 Low Density Commercial Subdivisions • Form DRPC-5 Low Density Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below,you certify that the recorded 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 Low Density Supplement Form SW401-Curb Outlet System Curb Outlet System Supplement Form SW401-Off-Site System Off-Site System Supplement Form SW401-Wet Detention Basin Wet Detention Basin Supplement Form SW401-Infiltration Basin Infiltration Basin Supplement Form SW401-Infiltration Trench Underground Infiltration Trench Supplement Form SW401-Bioieleiition Cell Bioretention Cell Supplement Form SW401-Level Spreader Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Form SW401-Wetland Constructed Wetland Supplement Form SW401-Grassed Swale Grassed Swale Supplement Form SW401-Sand Filter Sand Filter Supplement Form SWU-101 Version 8.07 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 Office. (Appropriate office may be found by locating project on the interactive online map at http://h2o.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. Iiu��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 -J • Permit application processing fee of$505($4,000 for Express)payable to NCDENR • Calculations&detailed narrative description of stormwater treatment/management • Copy of any applicable soil report f%4' • 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 NCSR numbers -Original contours,proposed contours,spot elevations,finished floor elevations -Details of roads,drainage features,collection systems,and stormwater control measures -Wetlands delineated,or a note on plans that none exist -Existing drainage(including off-site),drainage easements,pipe sizes,runoff calculations -Drainage areas delineated -Vegetated buffers(where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf,please complete this section. Designated agent(individual or firm):David K.Newsom,PE,Crystal Coast Engineering,PA Mailing Address:3817-3 Freedom Way City:Hubert State:NC Zip:28539 Phone: (910 ) 325-0006 Fax: (910 ) 325-0060 Email:crystalcoasteng@bizec.rr.com VIII. APPLICANT'S CERTIFICATION I,(print or type name of person listed in General Information,item 2)James M. Davis,Jr. , 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 2H .1000. ii Signature• Q D �1 Date: 314z l D Form SWU-101 Version 8.07 Page 4 of 4 Permit No. 5/0 0��d� ma (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM LOW DENSITY SUPPLEMENT This form may be photocopied for use as an original A low density project is one that meets the appropriate criteria for built upon area and transports stormwater runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be found in 15A NCAC 2H.1005 through .1007,DWQ BMP Manual(2007), and Session Law 2006-246. I. PROJECT INFORMATION Project Name : Shadow Creek Estates Contact Person: David K. Newsom,PE Phone Number: ( 910 )325-0006 Number of Lots:54 Allowable Built Upon Area Per Lot*:4,119 sf *If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area for each lot: The attachment must include the project name,phase,page numbers and provide area subtotals and totals. BUA shall be shown in units of square feet. II. BUILT UPON AREA See the Stormwater Management Permit Application for specific language that must be recorded in the deed restrictions for all subdivisions. For uniform lot sizes, complete the following calculation in the space provided below where: • SA Site Area-the total project area above Mean High Water. Wetlands may be excluded when the development results in high density pockets. • DF Density Factor-the appropriate percent built upon area divided by 100. • RA Road Area-the total impervious surface occupied by roadways. • OA Other Area- the total area of impervious surfaces such as clubhouses,tennis courts, sidewalks, etc. • No. Lots -the total number of lots in the subdivision. • BUA/Lot - the computed allowable built upon area for each lot including driveways and impervious surfaces located between the front lot line and the edge of pavement. (SA x DF) - RA-OA = BUA No. Lots Lot Calculation: Form SW401-Low Density-Rev.2 Page 1 of 3 (SA: 1,417,007 ft2 x DF: 0.25)-(RA: 96,342 ft2)-(OA: 35,478 ft2) =BUA per Lot=4,119 ft2 (No of Lots: 54) III. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate that the following requirements have been met and supporting documentation is provided as necessary. Indicate the page or plan sheet number where supporting documentation can be found. If the applicant has designated an agent on the Stormwater Management Permit Application Form,the agent may initial below. Page/Plan Initials Sheet No. yf - 3 A a. A 30 foot vegetative buffer is provided adjacent to surface waters. Projects in the Neuse, i' Tar-Pamlico, Catawba River basins, and Randleman Lake may require additional buffers. .."�1� •�L• a Deed restriction language as required on form SWU-101 shall be recorded as a restrictive L"Pv") covenant. A copy of the recorded document shall be provided to DWQ within 30 days of i-D'W4 platting and prior to sale of any lots. A. Built upon area calculations are provided for the overall project and all lots. At IA d. Project conforms to low density requirements within the ORW AEC (if applicable). 32 [15A NCAC 2H .1007(2)(b)] cit 4' 9 e. Side slopes of swales are no steeper than 3:1. di- 3 f. Longitudinal slope of swales is no greater than 5%; calculations for shear stress and velocity are shown if slope is greater than 5%. 3 g. Swales are designed to carry, at a non-erosive velocity, at least the 10-year storm. 9 h. Swale detail and permanent vegetation is specified on the plans. Form SW401-Low Density-Rev.2 Page 2 of 3 • IV: SWALE SYSTEM MAINTENANCE REQUIREMENTS .1. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches at any time. 2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up, erosion, and trash accumulation. 3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded following sediment removal. 4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a timely manner based on the monthly inspections. 5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts, velocity reduction devices and piping. 6. Swales will not be altered,piped, or filled in without approval from NCDENR Division of Water Quality. I acknowledge and agree by my signature below that I am responsible for the performance of the six 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 and Title:James M. Davis, Jr., Member/Organizer Address:P.O. Box 4505,Emerald Isle, NC 28594 Phone:252-422-9100 Date: 3 I L\ bg Signat . 4e..Vlnlvo wt Note: The le ally responsible party should be a homeowners association unless more than 50%of the lots have been sold and a resident of the subdivision has been named the president. 1, L G-I 1-ct, i -C`k N4 r'J e Q.f c ,a Notary Public for the State of t 01- Cart kIY\Q.,County of 0r1S176 VN ` ,do hereby certify(� that wanes fn.TbQ VI 5 - j,L personally appeared before me this 4 day of �4rc� , a O V D ,and ackno ledgejhe e exec tion of the forgoin . tration basin maintenance requirements. Witness my hand and official seal, ( . c �' , 1 CELIA J,CLINKINBEARD Notary Public,North Carolina Onslovt County My Commission Expires November 18,2009 SEAL My commission expires ND(, 1 I t a J Form SW401-Low Density-Rev.2 Page 3 of 3 Permit No.`-54.)t 7,43:37/ -/ State of North Carolina• (to be provided by DWQ) • Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM CURB OUTLET SYSTEM SUPPLEMENT FOR LOW DENSITY DEVELOPMENT WITH CURB AND GUTTER This form may be photocopied for use as an original DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes a stormwater management permit application, a curb outlet system supplement, a low density supplement, design calculations, and plans and specifications showing all stormwater conveyances and curb outlet details. I. PROJECT INFORMATION Project Name : Shadow Creek Estates Contact Person: David K. Newsom,PE Phone Number: ( 910)325-0006 Curb outlets to (check one): ® Swale ❑ Vegetated Area II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A NCAC 2H.1008,NCDENR BMP Manual (2007), and Session Law 2006-246. Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate that the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent on the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Page/Plan Initials Sheet No. 4J ° a. Curb outlets direct flow to a swale or vegetated area. Cek b. Swales or vegetated areas receiving curb outlet flow are designed to carry, at a minimum, e IvAeor eta:b the peak flow from the 10-year storm. bwtf r' c Flow velocity is non-erosive for peak flow from the 10-year storm event. _' 3 Plek,ettr d. Longitudinal slope of the swale or vegetated area does not exceed 5%. e. Side slopes of the swale or vegetated area are no steeper than 5:1 (horizontal to vertical). f. Length of swale or vegetated area is at least 100 feet. _ / ` 4L'y g. The system takes into account the run-off at ultimate built-out potential from all surfaces •14,re '/ draining to the system(delineate drainage area for each swale). S, h. Swales are located in recorded drainage easements. i. Grass type(s)for permanent vegetative cover specified on detail. j. Swale detail provided on plans. Form SW401-Curb Outlet System-Rev.1 Page 1 of 3 III. DESIGN INFORMATION • Complete the following table. If additional space is needed the information should be provided in the same • format as Table 1 and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State of North Carolina Erosion and Sediment Control Planning and Design Manual. Table 1. Swale Design Information Swale No. Drainage Impervious Grassed C Q YalIOw Vactual Flow Area(ac) Area(ac) Area(ac) (cfs) (fps) (fps) Depth,(ft) 1 1.28 0.28 1.00 0.40 3.67 5.00 2.47 0.55 2 0.23 0.17 0.06 0.72 1.19 5.00 2.06 0.34 3 1.45 0.75 0.70 0.56 5.82 5.00 2.02 0.76 4 1.41 0.50 0.91 0.45 4.55 5.00 2.15 0.65 5 2.79 0.67 2.12 0.41 8.20 5.00 1.93 0.92 6 1.35 0.40 0.95 0.41 3.97 5.00 1.50 0.73 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 IV. CURB OUTLET SYSTEM MAINTENANCE REQUIREMENTS 1. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches at any time. Form SWU-105 Ver 8.07 Page 2 of 3 • 2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up, • erosion, and trash accumulation. 3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded following sediment removal. 4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a timely manner based on the monthly inspections. 5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts, velocity reduction devices and piping. 6. Swales will not be altered,piped, or filled in without approval from NCDENR Division of Water Quality. I acknowledge and agree by my signature below that I am responsible for the performance of the six 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 and Title:James M. Davis,Jr., Member/Organizer Address:P.O. Box 4505,Emerald Isle,NC 28594 Phone:(252)422-9100 , Date: 0j1 tp 10 i5 Signature cx. 40 Lta) - ��*• Note: The legally responsible party shoul.s%''.t 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 ! v(i v\K i h 10 e q ,a Notary Public for the State of 1v MI L YN rt. ,County of / D l\S10 VJ ,do hereby that 'a VY t S M. b C3•V\.S , r• personally appeared before me this C) day of PAQ.v`Ck , t C) ,and acknowled e th ue execution of the forg ' infiltration basin maintenance requirements. Witness my hand and official seal, CELIA J.CUNKINBEARD • ���_kkkJJJ Notary Public,North Carolina Onslow County My..Commission Expires November 18,2009 Nov.SEAL My commission expires I v o v i K, ,2 Q 0 9 Form SWU-105 Ver 8.07 Page 3 of 3 Permit Name: (to be provided by DWQ) Drainage Area Number: j Grassed Swale 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 of the grassed swale will be carefully managed to reduce the sediment load to the grassed swale. - After the first-time fertilization to establish the grass in the swale,fertilizer will not be applied to the grassed swale. The grassed swale will be inspected once a quarter. 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: Potential problem: How I will remediate the problem: The entire length of the Trash/debris is present. Remove the trash/debris. wale Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully,and then re-sod (or plant with other appropriate species)and water until established. Provide lime and a one-time fertilizer application. Sediment covers the grass at Remove sediment and dispose in an the bottom of the swale. area that will not impact streams or BMPs. Re-sod if necessary. Vegetation is too short or too Maintain vegetation at a height of long. approximately six inches. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 733-1786. Form SW401-Grassed Swale I&M-Rev.2 Page 1 of 2 Permit Number: • (to be provided by DWQ) 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. Project name:Shadow Creek Estates BMP drainage area number: Print name:James M. Davis,Jr. Title:Member/Organizer Address:P.O. Box 4505, Emerald Isle,NC 28594 Phone:(252)422-9100 Signatur Cx.'W 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, Ce.11 61. (3t f hK t h b e ez rd , a Notary Public for the State of j prfk &r6 1 trig. , County of OV\Sf p u f , do hereby certify that f r . R U S I J f2 , personally appeared before me this (-1 ,1L, day of 4 d,TCt1 , ;DOI, and acknowledge the due execution of the forgoing grassed swale maintenance requirements. itness,my'hand an seal, C ./- CELIA J.CLINKINBEARD Notary Public,North Carolina Onslow County My Commission Expires November 18,2009 SEAL My commission expires Ni.v 2.l'Y1 1 fI OC1 Form SW401-Grassed Swale I&M-Rev.2 Page 2 of 2 Permit Number: (to be provided by DWQ) Drainage Area Number: / Filter Ship, Restored Riparian Buffer and Level Spreader Inspection and Maintenance A eement C7Re- ?- 4 Br Oa les I wi11 keep a maintenance record on this BlvP'. 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: — Immediately after the filter strip is established,any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). — Once a year,the filter strip will be reseeded to maintain a dense growth of vegetation — Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. — Two to three times a year,grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC,1993).Forested filter strips do not require this type of maintenance. - Once a year,the soil will be aerated if necessary. — Once a year, soil pH will be tested and lime will be added if necessary. After the filter strip is established,it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch(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: Potential problem: How I will remediate the problem: The entire filter strip Trash/debris is present. Remove the trash/debris. system The flow splitter device The flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. of any sediment off-site. The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for repair. Form SWU401-Level Spreader,Filter Strip,Restored Riparian Buffer I&M-Rev.2 Page 1 of 3 BMP element: Potential problem: How I will remediate the problem: The swale and the level The swale is clogged with Remove the sediment and dispose lip sediment. of it off-site. The level lip is cracked, Repair or replace lip. settled,undercut,eroded or otherwise damaged. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip,and shows stormwater has then plant a ground cover and bypassed it. water until it is established. Provide lime and a one-time fertilizer application. Trees or shrubs have begun Remove them. to grow on the swale or just downslope of the level lip. The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully,and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed(enlarge if downhill. necessary). After this,reestablish the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of (if applicable). approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to 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. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. Plants are dead,diseased or Determine the source of the dying. problem: soils,hydrology,disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used,do not allow it to get into the receiving water. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality local Regional Office,or the outlet. 401 Oversight Unit at 919-733-1786. Form SWU401-Level Spreader,Filter Strip,Restored Riparian Buffer I&M-Rev.2 Page 2 of 3 Permit Number: (to be provided by DWQ) 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. Project name:Shadow Creek Estates BMP drainage area number: I Print name:James M. Davis, Jr. Title:Member/Organizer Address:P.O. Box 4505, Emerald Isle,NC 28594 Phone: (252) 422-9100 Signa --: ' Date: D r 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, C C( I n fek fl @Q/d , a Notary Public for the State of Nam,ear&t r,cam. , County of On S k)IA/ , do hereby certify that appeared before me this q 4- -m��l__�UrS t ��` Personall Y PP day of ilpictiI ,p�OD Wand acknowledge the due execution of the forgoing filter strip,riparian buffer, and/or level spreader maintenance requirements. Witness my hand and official seal, CELIA J.CLINKINBEARD Notary Public, North Carolina On,low County My Commission Expires November 18,2009 SEAL My commission expires A1L Ve frther1 ' 42®61 Form SWU401-Level Spreader,Filter Strip,Restored Riparian Buffer I&M-Rev.2 Page 3 of 3 DWQ USi ONLY Date Received Fee Paid Permit Number 3�1 ti''" ,-C S.oo .5-w8p7e sS/ fi70 a. State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORM A T ER 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): Shadowcreek Estates,LLC 2. Print Owner/Signing Official's name and title(person legally responsible for facility and compliance): Tames M.Davis,Tr.,Member/Organizer 3. Mailing Address for person listed in item 2 above: P.O.Box 4505 City:Emerald Isle State:NC Zip:28594 Phone: (252 ) 422-9100 Fax: ( ) N/A Email:N/A 4. Project Name(subdivision,facility,or establishment name-should be consistent with project name on plans, specifications,letters,operation and maintenance agreements,etc.): Shadow Creek Estates 5. Location of Project(street address): Queens Creek Rd. (NCSR 1509) City:Swansboro County:Onslow 6. Directions to project(from nearest major intersection): From the intersection of US 172&NC Hwy 24,east on NC Hwy 24 for approx. 4.7 miles.Then turn right (south)onto Queens Creek Rd(NCSR 1509)for approximately 2.0 miles. Site is on left-hand side of the road. 7. Latitude:34°40'55"N Longitude:77°10'23"W of project 8. Contact person who can answer questions about the project: Name:David K.Newsom,PE,Crystal Coast Enginee Telephone Number: (910 ) 325-0006 Email:crystalcoasteng@bizec.rr.com II. PERMIT INFORMATION: 1. Specify whether project is(check one): ❑New ❑Renewal ®Modification 2. If this application is being submitted as the result of a renewal or modification to an existing permit,list the existing permit numberSW8 070551 and its issue date(if known)October 11,2007 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): RECEIVED Form SWU-101 Version 8.07 Page 1 of 4 MAR 1 4 zoos BY: ❑LAMA Major ®Sedimentation/Erosion Control 0404/401 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. Low Density(<25%impervious)with Curb Outlets(flumes).Modification requested due to increase in number of lots&increased impervious area of cul-de-sacs,sidewalks&Turn Lane. 2. Stormwater runoff from this project drains to the White Oak River basin. 3. Total Site Area:33.06 acres 4. Total Wetlands Area:5.68 acres 5. 100'Wide Strip of Wetland Area:5.15 acres (not applicable if no wetlands exist on site) 6. Total Project Area**:32.53 acres 7. Project Built Upon Area:25 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 in the same format as below. Basin Information Drainage Area 1 Drainage Area 2 Receiving Stream Name Queens Creek Stream Class&Index No. SA;HQW Drainage Area(sf) 1,417,007 - Existing Impervious*Area(sf) -0- Proposed Impervious*Area(sf) 354,246 %Impervious*Area(total) 25% Impervious*Surface Area Drainage Area 1 Drainage Area 2 On-site Buildings(sf) 54 lots @ 4,119 sf ea=222,426 sf On-site Streets (sf) 96,342 On-site Parking (sf) -0- On-site Sidewalks (sf) — 27,418 Other on-site (sf)(-si 1 9 Off-site (sf) (Tktnl..ane) 8,051 Total (sf): 354,246 *Impervious area is defined as the built upon area including,but not limited to,buildings,roads,parking areas, sidewalks,gravel areas,etc. **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?digital•planimeter IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS 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 SWU-101 Version 8.07 Page 2 of 4 Form DRPC-1 High Density Commercial Subdivisions Form DRPC-2 High Density Developments with Outparcels Form DRPC-3 High Density Residential Subdivisions Form DRPC-4 Low Density Commercial Subdivisions Form DRPC-5 Low Density Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below,you certify that the recorded deed restrictions and protective covenants for this project shall include all the applL.able 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 Low Density Supplement Form SW401-Curb Outlet System Curb Outlet System Supplement Form SW401-Off-Site System Off-Site System Supplement Form SW401-Wet Detention Basin Wet Detention Basin Supplement Form SW401-Infiltration Basin Infiltration Basin Supplement Form SW401-Infiltration Trench Underground Infiltration Trench Supplement Form SW401-Bioretention Cell Bioretention Cell Supplement Form SW401-Level Spreader Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Form SW401-Wetland Constructed Wetland Supplement Form SW401-Grassed Swale Grassed Swale Supplement Form SW401-Sand Filter Sand Filter Supplement Form SWU-101 Version 8.07 Page 3 of 4 • r. ,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://h2o.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. Ini • • 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 • 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 NCSR numbers -Original contours,proposed contours,spot elevations,finished floor elevations -Details of roads,drainage features,collection systems,and stormwater control measures -Wetlands delineated,or a note on plans that none exist -Existing drainage(including off-site),drainage easements,pipe sizes,runoff calculations -Drainage areas delineated -Vegetated buffers(where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf,please complete this section. Designated agent(individual or firm):David K.Newsom,PE,Crystal Coast Engineering,PA Mailing Address:3817-3 Freedom Way City:Hubert State:NC Zip:28539 Phone: (910 ) 325-0006 Fax: (910 ) 325-0060 Email:crystalcoasten• ?bizec.rr.com VIII. APPLICANT'S CERTIFICATION I,(print or type name of person listed in General Information,item 2)James M.Davis,fr. 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 2H.1000. Signa • QAP• 0 1M.: Date: 3 I 11,% Form SWU-101 Version 8.07 Page 4 of 4 Permit No. "-//no (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM LOW DENSITY SUPPLEMENT This form may be photocopied for use as an original A low density project is one that meets the appropriate criteria for built upon area and transports stormwater runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be found in 15A NCAC 2H .1005 through .1007,DWQ BMP Manual(2007), and Session Law 2006-246. I. PROJECT INFORMATION Project Name : Shadow Creek Estates Contact Person: David K. Newsom, PE Phone Number: ( 910 )325-0006 Number of Lots:54 Allowable Built Upon Area Per Lot*:4,119 sf *If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area for each lot. The attachment must include the project name,phase,page numbers and provide area subtotals and totals. BUA shall be shown in units of square feet. II. BUILT UPON AREA See the Stormwater Management Permit Application for specific language that must be recorded in the deed restrictions for all subdivisions. For uniform lot sizes,complete the following calculation in the space provided below where: • SA Site Area-the total project area above Mean High Water. Wetlands may be excluded when the development results in high density pockets. • DF Density Factor-the appropriate percent built upon area divided by 100. • RA Road Area-the total impervious surface occupied by roadways. • OA Other Area-the total area of impervious surfaces such as clubhouses,tennis courts, sidewalks,etc. • No. Lots -the total number of lots in the subdivision. • BUA/Lot- the computed allowable built upon area for each lot including driveways and impervious surfaces located between the front lot line and the edge of pavement. (SAxDF) -RA-OA = BIJA No. Lots Lot Calculation: Form SW401-Low Density-Rev.2 Page 1 of 3 (SA: 1,417,007 ft2 x DF: 0.25)—(RA: 96,342 ft2)—(OA: 35,478 ft2)=BUA per Lot=4,119 ft2 (No of Lots: 54) III. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate that the following requirements have been met and supporting documentation is provided as necessary. Indicate the page or plan sheet number where supporting documentation can be found. If the applicant has designated an agent on the Stormwater Management Permit Application Form, the agent may initial below. Page/Plan Initials Sheet No. a. A 30 foot vegetative buffer is provided adjacent to surface waters. Projects in the Neuse, . '►w^4' Tar-Pamlico, Catawba River basins, and Randleman Lake may require additional buffers. ", cic Deed restriction language as required on form SWU-101 shall be recorded as a restrictive 0,64) covenant. A copy of the recorded document shall be provided to DWQ within 30 days of I--DN4 platting and prior to sale of any lots. ttp.si:t It. Built upon area calculations are provided for the overall project and all lots. d. Project conforms to low density requirements within the ORW AEC (if applicable). p [15A NCAC 2H .1007(2)(b)] C , 3 4 I e. Side slopes of swales are no steeper than 3:1. oy... 3 f. Longitudinal slope of swales is no greater than 5%; calculations for shear stress and velocity are shown if slope is greater than 5%. 326, 3 g. Swales are designed to carry, at a non-erosive velocity, at least the 10-year storm. h. Swale detail and permanent vegetation is specified on the plans. Form SW401-Low Density-Rev.2 Page 2 of 3 IV. SWALE SYSTEM MAINTENANCE REQUIREMENTS 1. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches at any time. 2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up, erosion, and trash accumulation. 3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded following sediment removal. 4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a timely manner based on the monthly inspections. 5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts, velocity reduction devices and piping. 6. Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality. I acknowledge and agree by my signature below that I am responsible for the performance of the six 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 and Title:James M.Davis, Jr.,Member/Organizer Address:P.O. Box 4505,Emerald Isle, NC 28594 Phone:252-422-9100 Date: 3 1 (i b8 S ignat aay.goo Note: The le ally responsible party should 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, `-'G �� S"CA lhk%-VN1 E:Qf'CC ,a Notary Public for the State of NO CarhlLT'Q.,County of ©nSlb W ,do hereby certify that 1 a.V fll5 1 Y): )Q V151 personally appeared before me this (6_ day of MCILM.N \ , aOpt ,and ackno ledge he exec tion of the forgoin tration basin maintenance requirements. Witness my hand and official seal, CELIA J.CLINKINBEARD Notary Public,North Carolina Onslow County ) My Commission Expires November 18,2009 SEAL My commission expires No V. 18 a OD J Form SW401-Low Density-Rev.2 Page 3 of 3 Permit No.`5-4}gd 74CS/ rxy State of North Carolina (to be provided by DWQ) Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM CURB OUTLET SYSTEM SUPPLEMENT FOR LOW DENSITY DEVELOPMENT WITH CURB AND GUTTER This form may be photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes a stormwater management permit application, a curb outlet system supplement, a low density supplement, design calculations, and plans and specifications showing all stormwater conveyances and curb outlet details. I. PROJECT INFORMATION Project Name : Shadow Creek Estates Contact Person: David K. Newsom,PE Phone Number: ( 910)325-0006 Curb outlets to(check one): ►Zi Swale ❑ Vegetated Area II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A NCAC 2H .1008,NCDENR BMP Manual (2007), and Session Law 2006-246. Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate that the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent on the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Page/Plan Initials Sheet No. a. Curb outlets direct flow to a swale or vegetated area. �' b. Swales or vegetated areas receiving curb outlet flow are designed to carry, at a minimum, w ��e e the peak flow from the 10-year storm. Cup� f b _"_ c Flow velocity is non-erosive for peak flow from the 10-year storm event. /� etLF d. Longitudinal slope of the swale or vegetated area does not exceed 5%. e. Side slopes of the swale or vegetated area are no steeper than 5:1 (horizontal to vertical). f. Length of swale or vegetated area is at least 100 feet. c4./ g. The system takes into account the run-off at ultimate built-out potential from all surfaces u draining to the system(delineate drainage area for each swale). _at_ 'J h. Swales are located in recorded drainage easements. i. Grass type(s)for permanent vegetative cover specified on detail. w I j. Swale detail provided on plans. Form SW401-Curb Outlet System-Rev.1 Page 1 of 3 III. DESIGN INFORMATION Complete the following table. If additional space is needed the information should be provided in the same format as Table 1 and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State of North Carolina Erosion and Sediment Control Planning and Design Manual. Table 1. Swale Design Information Swale No. Drainage Impervious Grassed C Q \Tallow Vactual Flow Area(ac) Area(ac) Area(ac) (cfs) (fps) (fps) Depth(ft) 1 1.28 0.28 1.00 0.40 3.67 5.00 2.47 0.55 2 0.23 0.17 0.06 0.72 1.19 5.00 2.06 0.34 3 1.45 0.75 0.70 0.56 5.82 5.00 2.02 0.76 4 1.41 0.50 0.91 0.45 4.55 5.00 2.15 0.65 5 2.79 0.67 2.12 0.41 8.20 5.00 1.93 0.92 6 1.35 0.40 0.95 0.41 3.97 5.00 1.50 0.73 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 IV. CURB OUTLET SYSTEM MAINTENANCE REQUIREMENTS 1. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches at any time. Form SWU-105 Ver 8.07 Page 2 of 3 2. Swale§will be inspected monthly or after every runoff producing rainfall event for sediment build-up, erosion, and trash accumulation. 3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded following sediment removal. 4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a timely manner based on the monthly inspections. 5. Catch basins, curb cuts,velocity reduction devices, and piping will be inspected monthly or after every significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts, velocity reduction devices and piping. 6. Swales will not be altered,piped, or filled in without approval from NCDENR Division of Water Quality. I acknowledge and agree by my signature below that I am responsible for the performance of the six 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 and Title:James M. Davis,Jr., Member/Organizer Address:P.O. Box 4505,Emerald Isle, NC 28594 '/ Phone:(252) 422-9100 LP '�Date: I 1 l5 Signature imn.Z - Note: The legally responsible party shoub#a t 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, C C.I\a.S V A i h V t h b e Q 4 ,a Notary Public for the State of,v Ak 0 C. ,County of On&IU Us.) ,do hereby c • that 3.—aril c S VY1., b GAS ., Sr. personally appeared before me this day of 1QMCk ,_ and acknowled e th ue execution of the forg • infiltration basin maintenance requirements. Witness my hand and official seal, CELIA J.CLINKINBEARD Notary Public,North Carolina Onslow County M ..Commission Expires Naysmber 18,2009 Nov. �/ SEAL My commission expires IV 1 f(, ,00 9 Form SWU-105 Ver 8.07 Page 3 of 3 Permit Name: (to be provided by DWQ) Drainage Area Number: Grassed Swale 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 of the grassed swale will be carefully managed to reduce the sediment load to the grassed swale. - After the first-time fertilization to establish the grass in the swale,fertilizer will not be applied to the grassed swale. The grassed swale will be inspected once a quarter. 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: Potential problem: How I will remediate the problem: The entire length of the Trash/debris is present. Remove the trash/debris. swale Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully,and then re-sod (or plant with other appropriate species)and water until established. Provide lime and a one-time fertilizer application. Sediment covers the grass at Remove sediment and dispose in an the bottom of the swale. area that will not impact streams or BMPs. Re-sod if necessary. Vegetation is too short or too Maintain vegetation at a height of long. approximately six inches. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 733-1786. Form SW401-Grassed Swale I&M-Rev.2 Page 1 of 2 Permit Number: (to be provided by DWQ) 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. Project name:Shadow Creek Estates BMP drainage area number: I Print name:James M. Davis,Jr. Title:Member/Organizer Address:P.O. Box 4505, Emerald Isle,NC 28594 Phone:(252)422-9100 Signatu Of-t.vk.� Date: (� Of 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, CeJi a.. .3 C1 l n K t h A e ez d , a Notary Public for the State of IU 0rfk earc l l v1�, , County of On sib ijJ , do hereby certify that �Q e.s IY) -D Qvt s, J n . personally appeared before me this ('' day of iharCk , 07C0 j, and acknowledge the due execution of the forgoing grassed swale maintenance requirements. fitness my'hand and ' l seal, CELIA J.CLINKINBEARD Notary Public,North Carolina Onslow County My Commission Expires November 18,2009 SEAL My commission expires !VDU 2 YYt l rI a2 d D 9' Form SW401-Grassed Swale I&M-Rev.2 Page 2 of 2 Permit Number: ' (to be provided by DWQ) Drainage Area Number. / Filter Strip, Restored Riparian Buffer and Level Spreader Inspection and Maintenance A eement CPRC-Q-6?-01,24 SCOur 1-eS 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: — Immediately after the filter strip is established,any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). — Once a year,the filter strip will be reseeded to maintain a dense growth of vegetation — Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. Two to three times a year,grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC,1993).Forested filter strips do not require this type of maintenance. — Once a year,the soil will be aerated if necessary. - Once a year,soil pH will be tested and lime will be added if necessary. After the filter strip is established,it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch(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 Potential problem: How I will remediate the problem: The entire filter strip Trash/debris is present. Remove the trash/debris. system The flow splitter device The flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. of any sediment off-site. The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for _� repair. Form SWU401-Level Spreader,Filter Strip,Restored Riparian Buffer I&M-Rev.2 Page 1 of 3 BMP element: Potential problem: How I will remediate the problem: The swale and the level The swale is clogged with Remove the sediment and dispose lip sediment. of it off-site. The level lip is cracked, Repair or replace lip. settled,undercut,eroded or otherwise damaged. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip,and shows stormwater has then plant a ground cover and bypassed it water until it is established. Provide lime and a one-time fertilizer application. Trees or shrubs have begun Remove them. to grow on the swale or just downslope of the level lip. The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully,and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed(enlarge if downhill. necessary). After this,reestablish the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of (if applicable). approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to 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. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. Plants are dead,diseased or Determine the source of the dying. problem: soils,hydrology,disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used,do not allow it to get into the receiving water. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality local Regional Office,or the outlet 401 Oversight Unit at 919-733-1786. Form SWU401-Level Spreader,Filter Strip,Restored Riparian Buffer I&M-Rev.2 Page 2 of 3 Permit Number: (to be provided by DWQ) 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. Project name:Shadow Creek Estates BMP drainage area number: Print name:James M. Davis, Jr. Title:Member/Organizer Address:P.O. Box 4505, Emerald Isle,NC 28594 Phone: (252)422-9100 Signs o W ot.nE"- Date: O r 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, Ce I14' CA I hieun Qr , a Notary Public for the State of NO(411&tvIInc , County of On ski ik/ , do hereby certify that Q me5 A ..._------personally appeared before me this q�VIS J 1�° P Y PP day of 4p12.1I ,p�QD Band acknowledge the due execution of the forgoing filter strip,riparian buffer, and/or level spreader maintenance requirements. Witness my hand and official seal, CELIA J.CLINKINBEARD Notary Public,North Carolina Onslow County My Commission Expires November 18,2009 / / , • SEAL My commission expires MN--er4 6er-I g� �oo Form SWU401-Level Spreader,Filter Strip,Restored Riparian Buffer I&M-Rev.2 Page 3 of 3 «B99 In accordance with Title 15 NCAC 2H.1000, the Coastal Stormwater Management Regulations, deed restrictions and protective covenants are required for Low Density Residential Subdivisions with curb outlet swales, where lots will be subdivided and sold. Deed restrictions and protective covenants are necessary to ensure that the development maintains a "built-upon"area consistent with the applicable regulation governing the density level. I, James M. Davis, Jr. acknowledge and affirm by my signature below, that I will cause the following deed restrictions and protective covenants to be recorded for Shadow Creek Estates prior to the sale of any lot: 1. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number 5IafD 7D,S,5/ , as issued by the Division of Water Quality under NCAC 2H.1000. 2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the stormwater management permit. 3. These covenants are to run with the land and be binding on all persons and parties claiming under them. 4. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. 5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence of the Division of Water Quality. 6. The maximum allowable built-upon area per lot is 4,119 square feet. This allotted amount includes any built-upon area constructed within the lot property boundaries, and that portion of the right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, and coquina, but does not include raised, open wood decking, or the water surface of swimming pools. 7. In the case of a lot within CAMA's regulated AEC, where the Division of Coastal Management calculates a different maximum allowable built-upon area for that lot than is shown herein, the governing maximum built-upon area for that lot shall be the most restrictive of the two. 8. This project proposes a curb outlet system. Each designated curb outlet swale shown on the approved plan must be maintained at a minimum of 100'long with 5:1 (H:V) side slopes or flatter, have a longitudinal slope no steeper than 5%, carry the flow from a 10 year storm in a non-erosive manner, and maintain a dense vegetated cover. 9. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the development except for average driveway crossings, is strictly prohibited by any persons. 10. Each lot will maintain a 30'wide vegetated buffer between all impervious areas and surface waters. 11. All roof drains shall terminate at least 30'from the mean high water mark of surface waters. 12. Filling in, piping or altering any designated 5:1 curb outlet swale associated with the development is prohibited by any persons. Signatur Date: I, e c,I ct, J Lit W I Wt e e Q rJ. , a Notary Public in the State of ►Ubr}L Caro I I inct. , County of ()Y' do hereby certify that 3Q h'l e S 1)') . iJ a I%I S t 0-r. personally appeared before me this the Li" day of nnamk _, 20 , and acknowledge the due execution of the foregoing instrument Witness my hand and official seal, SEAL Signature lA J.CUa Notary ublNorth ColinaA`a f f My Commission expires /r j o 0,'} Onslow County r V v f (J My Commission Expires November 18,2009 Crystal Coast Engineering , PA 3817-3 Freedom Way Hubert, N.C. 28539 Tel: (910)325-0006 Fax (910)325-0060 Email: crystfllcoastangi bizac.r.com RECEIVED APR I 0 2008 April 7, 2008 BY: Mr. David Cox N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 Re: Stomiwater Project No. SW8 070551 (Modification) Shadow Creek Estates Onslow County Dear Mr. Cox, Per our telephone conversation of March 28, 2008, we have made the following revisions to allow you to continue the stormwater review for the referenced project: 1. Added Preformed Scour Holes to each swale. 2. Added Preformed Scour Hole Detail to General Details. In addition, we are including a signed Operation & Maintenance Agreement for Level Spreaders, as per the usual requirements when Preformed Scour Holes are proposed. We are hopeful that this response addresses all concerns and that the permit can be issued in the near future. Should you have questions or additional concerns, please feel free to contact us. Yours truly, - 1 4 e...49 vit.t...0. J Jeanie Clinkinbeard Crystal Coast Engineering,PA 3817-3 Freedom Way Hubert,N.C.28539 Tel:(910)325-0006 Fax:(910)325-0060 Crystal Coast Engineering, PA ok -' (, 0 Transmittal To: Linda Lewis From: Jeanie for David K. Newsom NC Division of Water Quality 127 Cardinal Drive Ext. Wilmington, NC 28405 Re SW8 070551 Date: March 13,2008 Shadow Creek Estates Permit Modification Request ❑Urgent 0 For Review 0 Please Comment 0 Please Reply 0 Please Recycle Attached: One(1)original&One(1)copy Storrnwater Permit Application One(1)original Low Density Supplement One(1)original Curb Outlet Supplement One(1)original&one(1)copy Deed Restrictions Form RECEIVED Re One(1)original Grassed Swale O&M Agreement MAR 1 4 2006 One(1)copy Narrative BY: One(1)copy Swale Calculations One(1)copy Site Area(Wetlands)Calculations Three(3)copies Cover Sheet Three(3)copies Grading,Drainage&Stomtwater Plan Three(3)copies General Details One(1)copy Drainage Area Supplement One(1)check in the amount of$505 Comments: Submitted for permit modifialtion review. Stormwater Treatment & Erosion Control Narrative Shadow Creek Estates A Stormwater Management Permit (SW8 070551)was issued to Shadowcreek Estates, LLC on October 11, 2007, for the proposed construction of a 44 lot residential subdivision on a 33.06 acre tract located on NCSR 1509 (Queens Creek Road) approximately 2.0 miles south of its intersection with NC 24 in Swansboro Township, Onslow County. The owner now wishes to modify the Stormwater Permit to allow a total of 54 lots within the proposed subdivision. In addition, the proposed impervious area of the streets, sidewalks &Turn Lane have been increased slightly since the original Stormwater Permit was issued. The site is currently undeveloped. Shadowcreek Estates, LLC proposes to construct roadway, drainage, water&sewer facilities as well as development on individual lots (total disturbed area = 21.0 ac). The project is located approximately 0.5 miles from the southerly bank of Queens Creek (SA; HQW). The site contains an appreciable quantity of Sect. 404 wetlands. The project is proposed as Low Density (25% impervious). The project will incorporate curb and gutter(curb cuts). Vegetated 5:1 swales are proposed to treat runoff from streets. Site topography is flat to gently sloping (0 — 5%) generally toward the southerly boundary of the tract. Soils in the areas to be disturbed are fine to coarse sands. In Y L co Mo Y Y Y Y Y 000000 ti8 2,1 'r 0 10O W N N CV CV r r >J p© roiV88r�n 2 Cp 'r. N 0 O r p N r . ti ti 1,- N IA CD N rMC7d: M ce O O O O O O CD ti In M r r Cn ti CD Tr n. «iriN c60ir. N C p a) c0 CO r CO 'ci- .u+ ID 00 r N cD 03 O IOdCDIINMI M CO 0 P.- M P4 A O O O o O O CD O O O O O O al o m d In a) cl II II � ca �° ' wID07 Cl) 4.3 a) _ J W O 0 N O YCOCn r N r r O y O O O O O O O 0 0 0 0 0 0 L UZ 3 Y ti 0) N In Or. o ❑ o CD r CO In CV CO cc0 N -0 M r to CA M N L CO co tom= , N • 7� O'ea mm 11 -. 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