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HomeMy WebLinkAboutSW8070208_Current Permit_20070309A TF9 QG r I Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality March 9, 2007 Jack G. Stocks, President Timber Brook, Inc. 211 North Fifth Street Wilmington, NC 28401 Subject: Stormwater Project No. SW8 070208 Timber Creek Plantation Low Density Subdivision with a Curb Outlet System Brunswick County Dear Mr. Stocks: The Wilmington Regional Office received a Stormwater Management Permit Application for Timber Creek Plantation on February 9, 2007 with additional information on March 8, 2007 to complete the application. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 21-1.1000. We are forwarding Permit No. SW8 070208 dated March 9, 2007, 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 This permit shall be effective from the date of issuance until rescinded and shall be subject to the conditions and limitations as specified therein, and does not supercede any other agency permit that may be required. Please note that the permittee shall submit the Certification to the Division within 30 days of completion of the project in accordance with sections 11(6) and (7). 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, confor 'ng to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administr ve Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made t • is permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact either M. J. Naugle or me at (910) 796-7215. Sincere, E ar e6e' Regional Supervisor Surface Water Protection Section ENB/mjn: S:1WQSISTORMWATIPERMIT1070208 feb07 cc: Charles Cazier, Tripp Engineering, P. C. Brunswick County Inspections NCDO T District Engineer M. J. Naugle Wilmington Regional Office Central Files tv�°ne tCaro a )CMP North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Internet: www.ncwateraualitv.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 070208 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 Jack G. Stocks, President and Timber Brook, Inc. Timber Creek Plantation Old Lennon Road, Lockwood Folly Township, Brunswick County FOR THE construction, operation and maintenance of a 30% low density subdivision with a curb outlet system 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. 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 The project is permitted for 196 lots, each limited to a maximum of 5000 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 30%, 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 foot vegetated area shown on the approved plan must be maintained at a minimum of 100 foot 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. 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 070208 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. Mowing, and re -vegetating 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. 3. 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 bar 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 070208 11. All roof drains must terminate at least 30 foot 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 SW8 070208 for the Timber Creek Plantation project, 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. The maximum built -upon area per lot is 5000 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. Filling in, piping or altering any designated 5:1 curb outlet swale or vegetated area associated with the development is prohibited by any persons. L A 30 foot vegetated buffer must be maintained between all built -upon area and the Mean High Water line of surface waters. j. All roof drains shall terminate at least 30 foot from the Mean High Water mark. k. Each designated curb outlet swale or 100 foot vegetated area shown on the approved plan must be maintained at a minimum of 100 foot 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. i 3. 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. 14. The permittee must submit a copy of the recorded deed restrictions within 30 days of the date of recording. Page 4 of 5 State Stormwater Management Systems Permit No. SW8 070208 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 Qualityy, 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 re -issuance, 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 21-1.1000; 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 re -issuance 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 ninth day of March 2007. NORT AROLINA ENVI ONMENTAL MANAGEMENT COMMISSION ------------------------------------------- for Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 5 LEVEL SPREADER OPERATION AND MAINTENANCE AGREEMENT The level spreader is defined as an elongated, level threshold, designed to diffuse stormwater runoff. Maintenance activities shall be performed as follows: 1. After construction and until vegetation has been established, level spreader(s) shall be inspected after every rainfall. Thereafter, ievei spreader(s) shall be inspected at least every month and more frequently during the fall season and after heavy rainfall events: a. Accumulated sediment, leaves, and trash shall be removed, and repairs made if required. b. Inspect level spreader(s) for evidence of scour, undercutting, settlement of the structure, and concentrated flows downhill from the level spreader(s). c. A level elevation shall be maintained across the entire flow -spreading structure at all times. Repair or replace the level spreader if it is damaged. d. Mow vegetative cover to a height of six (6) inches and prune plants if they cover over half of the level spreader surface. e. Repair eroded areas and replace/replant dead or damaged vegetation. 2. The contractor should avoid the placement of any material on and prevent construction traffic across the structure. If the measure is damaged by construction traffic, it shall be repaired immediately. 3. Inspect and repair the collection system (e.g., catch basin's, pipes, swales, riprap) four (4) times a year to maintain proper functioning. I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: Phone:• s • • Signature:I, Date: U G - R - Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and�Qa resident of the subdivision has been named the president. j��L.d , a Notary Public for the State of } , (411) (� '�?�{ / � County of P )dtr , do hereby certify that -,T(a_rL._ ( 7 , f, C` %..J personally appeared before me this Z5 day of - fir. � � 1 , and acknowledge the due execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and official seal, pA!��pTAR `0 PUB SEAL ,t ZRcFrvgla FEB 0 9 iU01 BY: --•r... My commission expires CrI.4 . f6 r 2c, I Page 1 of 1 DEED RESTRICTIONS I' - •; 4 ;; I ECTIVE COVENANTS I, Jack G. Stocks acknowledge and affir my sign a below, that I will cause ego of w ng d restrictions and prot nt corde "or to the 1� of any lot: I. For All Pr 1. TKefollowing covenantntended to ensure ongo ng_�mplia wr tate Stormwater anagement Permit Number `a- W C= `l - ; as issued' a sr Water Quality under INV AC 2H.1000. 2. The S to of North Carolina is made a beneficra�f_these covenants to h ex t ne ssary to maintain c m liance with the stormwater managemer� �a 3. These covenant t run with the land and be binding on M[persons and parties c iming under them. r 4. The covenants pertaining tc�storrrrGv& may not -be altured-ar-reseinded- it ap the express written consent of the S ate North Carolina, :vision of Water Quality. ` �a 5. Alterat" n the drainage as shown on the approved 1p an may not take place without the concurrence of thdDivisid of Water Quality. H. Lo Density Rest ential Subdivisions (In addition to 1.1-1.5- nd all others that apply) 1. The max" um a - on ar ea ea per lot is 5.000 square feet. This allotted amount includes an ilt-upon are cons within the lot property boundarie , nd that portion of the t-of-way be the fron t line and the .of thepavement. Built up area includes, but is not limite structures, 'asphe, co rete, gravel, brick, s slate, and coquina, t does not include raised, ope d decking, o ter surface of swimming 2 Filling in or piping of any vegetativ vey ces " hes, swales, etc.) associated with the development except for average driveway gs, is s I prohibited by any persons. 3. Each lot will maintain a 30' wide vegetated buffer be ee impe us areas and surface waters. 4. All roof drains shall terminate at least 30' from the mean hr water k of ace waters. III Low ensity Subdivision with Curbs and Gutter . dit.on LI-L5, 11.1- nd all others 1. Filling in, pipr Itering any designated 5:1 trtlet s r h the development is prohibited by any perso . 2. This project proposes a c rb outlet system. esignated curb outlet swale s own on the approved plan must be maintained at a minimum of 100' long wt - (H. V) side slopes or atter, have a longitudinal slope no steeper than 5%, carry the flow from a r storm in a n n-erosive manner, and maintain a dense vegetated cover. IV Project lies within C dditiop-t - .5 ers that a ly) 1. "Lots within CAMA's Area of Environmental Concern may have the permitted maximum built -upon area reduced due to CAMA jurisdiction within the AEC. " OFFICE US I, OT i-N Date Rec ived Fee Paid Permit Number Z °I 017 14SCO6 l8-K,$ 1 4W907n?.0"3 State of North Carolina Department of Environment and Natural Resources Division of Water Qualify STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original 7FE8 r�'�1�I. GENERAL INFORMATION 0 9.Z007 1. Applicants name (specify the name of the corporation, individual, etc. who owns the Timber Brook Inc. 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Jack Stocks / President 3. Mailing Address for person listed in item 2 above: 211 N. 5t' Street City: Wilmin on State: NC Zip: 28401 Telephone Number: 763-8124 4. Project Name (subdivision, facility, or establishment name —should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Timber Creek Plantation 5. Location of Project (street address): Old Lennon Road City: Lockwood Folly Township County: Brunswick 6. Directions to project (from nearest major intersection): From NC 211 and NC 17. travel East on 211 for 2.5 miles. Turn left on SR 1504 (Old Lennon Rd.) and travel 0.75 miles. Ste is on the left. 7. Latitude: N 340 00' 16" Longitude: W 780 13' 18" of project 8. Contact person who can answer questions about the project: Nance: Charles Cazier Telephone Number: 910-763-5 i 00 II. PERMIT INFORMATION: 1. Specify whether project is (check one): X New Renewal Modification Form SWU-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 (check one): X Low Density _ High Density Redevelop General Permit Other 4. Additional Project Requirements (check applicable blanks): CAMA Major X 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. Low density 5:1 grassed swales 2. Stormwater runoff from this project drains to the Lumber River basin. 3. Total Project Area: 110.99 acres 4. Project Built Upon Area: 29.15 %. 5. How many drainage basins does the project have? 1 6. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. Basin Inforniation 10,airiage Basin 1 Vraina&,Basin 2 Receiving Stream Name Timber Creek Receiving Stream Class C-SW Drainage Basin Area 110.99 ac Existing Impervious * Area --- Proposed Impervious * Area 32.35 ac % Impervious* Area (total) 29.15 % Impervious * Surf&,e k,re3 Drazzua � Baiiin 1 Drainage Basin 2 On -site Buildings 196 @ 5,000 980,000 sf On -site Streets 393,312 sf On -site Parking On -site Sidewalks Other on -site Clubhouse 35,973 sf Off -site Total: X= 1,409,285 sf_ * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas sidewalks, gravel areas, etc. RECEIVED Form SW-101 Version 3.99 Page 2 of 4 FEB 0 9 2007 BY: 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 followmg covenants are intended to ensure ongoing compliance with state stormwater managementpermit 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 5,000 square feet of any lot shall be covered by structures of impervious materials. Impervious materials include asphalt, gravel, concrete, briar 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 necessm y to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modii*ation prior to construction. S. All permitted runo 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 BUT specified for this project. Contact the Stormwater and General Permits Unit at (910) 733-5083 for the status and availability of these forms. Form SW-102 Form SWU-103 Form SWU-104 Form SWU-105 Form SWU-106 Form SW-107 Form SWU-108 Form SWU-109 Wet Detention Basin Supplement Infiltration Basin Supplement Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Underground Infiltration Trench Supplement Neuse River Basin Supplement Innovative Best Management Practice Supplement Form SWU-101 Version 3.99 Page 3 of 4 F IVI D92007 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. 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. Applicant's Initials • Original and one copy of the Stormv�rater Management Permit Application Form (, • One copy of the applicable Supplement Form(s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment/management • Two copies of plans and specifications, including: - Development/Project name - Engineer and firm - Legend - North arrow - Scale - Revision number and 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): Tripp Engineering, P.C. Mailing Address: 419 Chestnut Street City: Wilmington State: NC Zip: 28401 Phone: 910 763-5100 VIII. APPLICANT'S CERTIFICATION Fax: (910) 763-5631 I, (print or type name of person listed in General Information, item 2) Jack Stocks 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 2ri .1000. Signature Date: //!n r 7FEEBI CEIVERFormSWU-101 Version 3.99 Page 4 of 4 0 92007 Permit No. 'e5W la 7yw oa (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 NCAC211 .1005 through .1007. I. PROJECT INFORMATION (please complete the following information): Project Name: Timber Creek Plantation Contact Person: Charles Cazier Phone Number: (910) 763-5100 Number of Lots: 196 Allowable Built Upon Area Per Lot*: 5 000 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. 1-11 9.3 0110 8 0-0WKI .111 DI1 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 line and the edge of pavement. FEB ' w Aul I--V Z FEB 01-2007 Form SWU-104 Rev 3.99 Page 1 of 2 Calculation: (SA x DF)- RA- OA = BUA No. Lots Lot 110.99 ac x 0.3 — 35,973 — 393,312 = 5,209.86 sf 196 5,000 sf < 5,209.86 sf O© 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. If the applicant has designated are agent in the Stormwater Management Permit Application Form, the agent may initial below. Applicants Initials ��T) C— a. A 30 foot vegetative buffer is provided adjacent to surface waters. Projects in the Neuse River basin may require additional buffers. b. Deed restriction language as required on form SWU-101 shall be recorded as a restrictive covenant. A copy of the recorded document shall be provided to DWQ within 30 days of platting and prior to sale of any lots. c. 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). [15A NCAC 2H .1007(2)(b)] CE FEB 0 92007 Form SWU-104 Rev 3.99 Page 2 of 2 Permit No. 5W $ 0-7 O ?_p9 (to be provided by DWQ) State of North Carolina 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: Timber Creek Plantation Contact Person: Tripp Engineering, P.C. ( Charlie J Phone Number: (910 ) 763-5100 Curb outlets to (check one): X Swale 0 Vegetated Area II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A NCAC 211.1008. 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. Applicants Initials GpC, 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, the peak flow from the 10-year storm. c. Flow velocity is non -erosive for peak flow from the 10-year storm event. �D� L d. Longitudinal slope of the swale or vegetated area does not exceed 5%. _ev::� e. Side slopes of the swale or vegetated area are no steeper than 5:1 (horizontal to vertical). i f. Length of swale or vegetated area is > 100 feet. g. The system takes into account the run-off at ultimate built -out potential from all surfaces draining to the system (delineate drainage area for each swale). 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. FEB 0 g 2007 Form SANTJ-105 Ver 3.99 Pagel of 3 ,r 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 DesignInformation Swale No. Drainage Area (ac) Impervious Area (ac) Grassed Area (ac) C Q (cfs) V allow (fps) V actual (fps) Flow Depth (ft) 1 3.09 0.77 2.32 0.50 9.73 5.0 3.33 0.76 2 1.15 0.29 0.86 0.50 3.62 5.0 2.69 0.52 3 2.87 0.72 2.15 0.50 9.04 5.0 3.50 0.72 4 1.17 0.29 0.88 0.50 3.69 5.0 3.26 0.48 5 3.07 0.77 2.30 0.50 9.67 5.0 2.04 0.97 6 1.66 0.42 1.25 0.50 5.23 5.0 3.40 0.55 7 2.19 0.55 1.64 0.50 6.90 5.0 2.41 0.76 8 2.66 0.80 1.86 0.50 8.38 5.0 2.42 0.83 9 3.41 0.85 2.56 0.50 10.74 5.0 1.89 1.07 10 2.07 0.62 1.45 0.50 6.52 5.0 4.16 0.56 11 8.84 2.21 6.63 0.50 27.85 5.0 4.71 1.09 12 2.29 0.69 1.60 0.50 7.21 5.0 3.76 0.62 13 5.05 1.26 3.79 0.50 15.91 5.0 2.40 1.15 14 2.61 0.78 1.83 0.50 8.22 5.0 3.66 0.67 15 1.43 0.36 1.07 0.50 4.50 5.0 1.69 0.73 16 1.38 0.41 0.97 0.50 4.35 5.0 3.17 0.52 17 2.93 0.88 2.05 0.50 9.23 5.0 1.56 1.09 18 1.72 0.52 1.20 0.50 5.42 5.0 1.59 0.82 19 20 21 22 23 24 25 Form SW-105 Ver 3.99 Page 2 of 3 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. 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 may 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: Jack Stocks President Address: 211 N. 5 b Street, Wilmington, NC 28401 Phone: 910-763-8124 Date: Signature: 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, Della C. Baird , a Notary Public for the State of North Carolina , County of Pender , do hereby certify that Jack G. Stocks personally appeared before me this le_ day of , fj�jxj 2006 , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official seal, SEAL My commission expires October 15, 2011 FEB . 9 -2007 Form SWU-105 Ver 3.99 Page 3 of 3 LEVEL SPREADER OPERATION AND MAINTENANCE AGREEMENT The level spreader is defined as an elongated, level threshold, designed to diffuse stormwater runoff. Maintenance activities shall be performed as follows: 1. After construction and until vegetation has been established, level spreader(s) shall be inspected after every rainfall. Thereafter, level spreader(s) shall be inspected at least every month and more frequently during the fall season and after heavy rainfall events: a. Accumulated sediment, leaves, and trash shall be removed, and repairs made if required. b. Inspect level spreader(s) for evidence of scour, undercutting, settlement of the structure, and concentrated flows downhill from the level spreader(s). c. A level elevation shall be maintained across the entire flow -spreading structure at all times. Repair or replace the level spreader if it is damaged. d. Mow vegetative cover to a height of six (6) inches and prune plants if they cover over half of the level spreader surface. e. Repair eroded areas and replace/replant dead or damaged vegetation. 2. The contractor should avoid the placement of any material on and prevent construction traffic across the structure. If the measure is damaged by construction traffic, it shall be repaired immediately. 3. Inspect and repair the collection system (e.g., catch basins, pipes, swales, riprap) four (4) times a year to maintain proper functioning. I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: 7QGk G. Simk.s Title: Fr - Address: N. S 46 cS�_r.CE4 Wjm 63g(LQ NC 2 B(4.D 1 Phone:f�lZ4 Signature:,_ / e-- —x 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, l)e�,lf C o fA , a Notary Public for the State of �'>✓��1 rLOU sir?" County of Ufa r r'I' , do hereby certify that --Tact 6. aim Gf-,--j personally appeared before me this day of and acknowledge the due execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and official seal, ���a1►n 11 �,� fill C• p, �QTAR y' coiA\0 fit 111111W" SEAL Z;MCF,IVF,D FEB 0 9.100! BY: My commission expires Ce'-( . tS 4 201 i Page 1 of 1 DEED RESTRICTIONS I FEB 0 9.AN AND PROTECTIVE COVENANTS I, Jack G. Stocks acknowledge and affirm by my signature below, that I will cause restrictions and protective covenants to be recorded prior to the sale of any lot: For All Projects: 1. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number_ 6W 13 09 020� 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. II. Low Density Residential Subdivisions (In addition to I.1-1.6 and all others that apply) The maximum allowable built -upon area per lot is 5.000 square fect. 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. 2 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. 3. Each lot will maintain a 30' wide vegetated buffer between aU impervious areas and surface waters. 4. All roof drains shall terminate at least 30' from the mean high water mark of surface waters. III Low Density Subdivision with Curbs and Gutters: (in addition to 1.1-1.5,11.1-11.4 and all others that apply) Filling in, piping or altering any designated 5.1 curb outlet swale associated with the dovelopment is prohibited by any persons. 2. This project proposes a curb outlet system. Each designated curb outlet swale shown on the approved plan must be maintained at a minimum of 400' 10 �g with 5:1 (H:'J) 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. IV Project lies within CAMA's AEC: (in addition to L1-1.5 and all others that apply) "Lots within CAMA's Area of Environmental Concern may have the permitted maximum built -upon area reduced due to CA MA jurisdiction within the AEC. " Signature: Jack G. Stocks, President Timber Brook, Inc. r I, Della C. Baird , a Notary Public for the State of North Carolina, County of Pender , do hereby certify that Jack G. Stocks personally appeared before me this 6 day of December , 2006, and acknowledge the due execution of the forgoing instrument. Witness my hand and official seal NOTAR y Signature ,o UBL1G ' v�; My commission expires October 15, 2011 .........COU11111� '�hrinl nnlll\��