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HomeMy WebLinkAboutNCC231903_ESC Approval Submitted_20230620 NEW HANOVER COUNTY z' ENGINEERING _ 9 /A.Ibi 76) ,', "t 230 Government Center Drive, Suite 160, Wilmington, NC 28403 I >I 1111 P: (910) 798-7139 I F: (910)798-7051 ( NHCgov.com Jim lannucci, PE, CFM, County Engineer February 24, 2023 DR Horton Inc. 131 Racine Drive, Suite 201, Wilmington, North Carolina 28403 RE: Grading Permit#48-22.The Sidbury Phase II Dear Libby Shelton: This office has reviewed the erosion and sedimentation control plan. We find the plan to be acceptable and hereby issue this land-disturbing permit with modifications. Please read the permit conditions carefully, return the signed color original to our office and keep the copyfor your records. A copy of the enclosed land-disturbing permit must be posted at the job site. This letter gives the notice required by GS 113A-61.1(a) and the New Hanover County Erosion and Sedimentation Control Ordinance Article VIII Section 8.21 of our right of periodic inspection to ensure compliance with the approved plan. As of April 1, 2019, all new construction activities are required to complete and submit an electronic Notice of Intent(eN01i form recuestingaCertificate of Coverage(COC)underthe NCG010000 Construction General Permit. The COC must be obtained prior to the commencement of any land- disturbing activity on the above-named project, according to State Stormwater requirements.The NOI form may be accessed at deq.nc.gov/NCG01. Please direct questions about the NOI form to Paul Clark at Paul.clarkt´┐Żncdenr.gov. After you submit a complete and correct NOI Form, you will receive a link with payment instructions for the $100 annual permit fee.After the fee is received,you will receive the COC via email. The $100 fee will be charged annually until the project receives a final land-disturbance inspection. Once the project is stabilized and receives the final land-disturbance inspection,you should file a Notice of Termination (NOT) with the State to final out the project. A copy of the enclosed land-disturbing permit,a copy of the approved erosion and sedimentation control plan as well as any approved deviations, records of inspections made during the previous 12 months with the States Certificate of Compliance(COC)number on the report, and a rain gauge must be posted at the job site as required by 15A NCAC 4B .0118(a), the NCG01 permit, and the New Hanover County Erosion and Sedimentation Control Ordinance Article VIII Section 8.19(o). The land disturbing fee of$23,328 is due to be paid to New Hanover County Engineering prior to Plat Recordation. Page 2 of 2 A preconstruction meeting is optional prior to land-disturbing activity on this project. Please contact me at (910) 798-7139 if you would like to schedule this meeting in our office. If you choose not to have a preconstruction meeting,you must contact us with the date the land-disturbing activity will take place onsite and again once the initial erosion control measures are installed. New Hanover County's Erosion and Sedimentation Control Program is performance-oriented, requiring protection of existing natural resources and adjoining properties. If, following the commencement of this project, it is determined that the erosion and sedimentation control plan is inadequate to meet the requirements of the Sedimentation Pollution ControlAct of 1973 (North Carolina General Statutes 113A-51 through 66), and the New Hanover County Erosion and Sedimentation Control Ordinance Article VIII Section 8.19(f),this office may require revisions to the plan and its implementation of the revisions to ensure compliance with the Act and Ordinance. This land-disturbing permit will expire within 1 year following the date of approval,if no land- disturbing activity has been undertaken, as required by the New Hanover County Erosion and Sedimentation Control Ordinance Article VIII Section 8.18 (d). If no activity takes place within one year after work has begun onsite,the permit will expire. Please contact this office to reactivate a permit that has expired. Acceptance and approval of this erosion control plan is conditioned upon your compliance with Federal and State water quality laws, regulations and rules and local city or county ordinances or rules. This land-disturbing permit approval does notsupersede any other permits or approvals. It is the owner's responsibility to have all the permits and approvals that are required, prior to beginning construction. Please note this approval is based in part on the accuracy of the information provided in the Financially Responsibility Form,which you provided.You are required to file an amended form if there is any change in the information included on the form. Your cooperation is appreciated, CAD Beth Easley Wetherill, CPESC Erosion Control Supervisor Enclosures: Land-Disturbing Permit NPDES NCG01 Fact Sheet and Monitoring Form cc: Rick Moore PE, Mckim &Creed Robert Farrell Senior Planner, New Hanover County . j_,%, o Permit GP#48-22 y ,% t' z LNDP 22-00090 .I- ,I di .2 Permit for a Land-Disturbing Activity New Hanover County Department of Engineering 230 Government Center Drive -Suite 160 Wilmington, North Carolina 28403 (910) 798-7139 As authorized by the New Hanover County Erosion and Sedimentation Control Ordinance This permit issued to DR Horton Inc. authorizes the development of 77.76 acres of land at 6010 Sidbury Road for The Sidbury Phase II in New Hanover County with modifications.The permit issued on February 24, 2023, is subject to compliance with the application and site drawings, all applicable regulations and special conditions and notes set forth below. Any plan modifications must be approved by this office prior to field changes_ It is understood by the applicant that a representative of New Hanover County's Engineering Department may inspect the site at any time following the issuance of this Permit. A copy of the approved Soil Erosion Control Plan as well as any approved deviations, this permit, a rain gauge, the Certificate of Coverage (COC) number from the State and copies of the Combined Self-Monitoring and Self-Inspection Reports must be available at all times at the site. Failure to execute the provisions of this permit and the approved Soil Erosion Plan, or any other provisions of the New Hanover County Soil Erosion and Sedimentation Control Ordinance, may result in immediate legal action by the County to the limits prescribed by the Ordinance. If the measures outlined on the approved Soil Erosion Control Plan and this Permit prove insufficient, additional Erosion Control measures can and will be required which in turn will be considered provisions of this Permit. This Permit does not preclude any other permits or approvals necessary for beginning or completing this development. Approval of an erosion control plan is conditioned on the applicant's compliance with Federal and State laws, regulations, and rules. It is the Permittee's responsibility to obtain all necessary permits and approvals and to ensure the information given for this permit is accurate and updated if ownership or the financially responsible party changes. SPECIAL CONDITIONS (THESE CONDITIONS MUST BE FOLLOWED IN ADDITION TO THE PLANS AND SPECIFICATIONS) *All the soil erosion control measures will be installed as the site is cleared and maintained throughout construction. This plan includes 2 phases of construction with limited land disturbance in the initial phase and installation of the initial smaller skimmer sediment basins with built out skimmer basins and additional disturbance being built in Phase 2. Because the initial erosion control measures are not adequate to restrain erosion for the entire site in Phase I. The Initial phase includes 5 construction entrances with limited disturbance to include installation of ditch plugs with immediate ditch filling prior to any rain event, installation of 6 pyramid wattle check dams or large rock check dams at the ends of all ditches draining to Island and Prince George Creeks, silt fences, a lined clean water diversion with a 6 wattle pyramid check dam or large rock check dam installed immediately above the energy dissipator, immediate installation of 4 smaller skimmer sediment basins (TSB) in the initial phase of grading with Faircloth skimmers and 3 coir baffles,the skimmer in TSB 5 will be 4 inches with a 2.9 inch orifice, the skimmer in TSB 6 will be 2 inches with a 1.7 inch orifice, the skimmer in TSB 7 will be 2 inches (Continued) - Page Two Permit GP#48-22 LNDP 22-00090 with a 1.8 inch orifice and the skimmer in TSB 8 will be 2.5 inches with a 2.1 inch orifice, 7 diversion ditches with 12 inch wattle check dams, diversions 1 & 2 will have a minimum of 2 wattle check dams, diversion 3 will have a minimum of 5 wattle check dams, diversion 4 will have a minimum of 7 check dams, diversion 5 & 6 will have a minimum of 6 wattle check dams, and diversion 7 will have 10 wattle check dams. In Phase 2 the larger skimmer sediment basins will be built with Faircloth skimmers and 3 coir baffles,the skimmer in TSB 5 will be 6 inches with a 5 inch orifice, the skimmer in TSB 6 will be 6 inches with a 4.9 inch orifice, the skimmer in TSB 7 will be 6 inches with a 5.9 inch orifice and the skimmer in TSB 8 will be 4 inches with a 2.9 inch orifice, additional site clearing will then occur, drainage will be installed with inlet and outlet protection to include dandy sacks. Note: Additional erosion control measures and revised plans may be required and if the 6 pyramid check dams fail, large rock check dams will be required. *Note the required separate NCG01 permit that requires concrete washouts and other NCG01 regulations. *In issuing this permit New Hanover County has relied on the representations of the permit applicant. The County has not jurisdiction to determine any contested property rights or ownership. *Tree Removal Permits and/or Approvals are required from the City of Wilmington and/or New Hanover County PRIOR to clearing of the site. *Silt fence stakes must be steel and will be placed six feet apart without wire reinforcement or eight feet apart with wire reinforcement. Silt fence is not allowed as inlet protection. *This permit does not preclude any permits or approvals which may be necessary such as City of Wilmington or New Hanover County, NC DEMLR, C.A.M.A., and/or the US Army Corps. of Engineers, DEM Solid Waste or any other agencies or approvals that may be necessary. *No sediment shall leave the site in suspension of water. *If plan revisions are necessary, you must submit a copy to this office for approval prior to any field changes. *If soil is brought onto this site or removed from this site, it must come from or be taken to an approved or permitted site, to be identified to this office prior to being brought onsite or removal from the site. *All City and/or County and State drainage and stormwater requirements will be adhered to. *If these measures fail to adequately control erosion, more restrictive measures will be required. *If any phase of grading ceases for more than 90 calendar days, the site will be temporarily stabilized. *All slopes must be stabilized within 21 calendar days of any phase of activity. The approval of an erosion control plan is conditioned on the applicant's compliance with Federal and State Water Quality laws, regulations, and rules. *Note the required rates for seed, lime, fertilizer, and mulch in your seeding specifications. *Enclosed is a Combined Self-Monitoring and Self-Inspection Form that meets the requirements of both the NPDES Stormwater Permit for Construction Activities, NCG 010000 reporting and the Land Resources Self- Inspection Program that satisfies the requirements of the Sedimentation Pollution Control Act.These are mentioned below with specific requirements for each program. These reports are the responsibility of the property owner. They require a rain gauge onsite, inspections and reporting every 7 calendar days and within 24 hours of every 1.0-inch rain per 24-hour period and at specific phases.of construction. Additional copies of this Combined Construction Inspection Report can be found at http://portal.ncdenr.org/web/lr/erosion . Reports must be available onsite at all times. If you have questions, please contact New Hanover County Engineering (910)798-7139 or the Land Quality Section at the NC DEMLR Regional office at (910) 796-7215. *Note the NPDES information from the State for sites disturbing 1 acre or more and the reporting requirements. All NEW projects permitted after August 3, 2011, must include the following surface water withdrawal locations and stabilization requirement designations on the plan in order to qualify for coverage under the most recent NPDES Construction General Permit. All settling basins must have outlet structures that (Continued)- Page Three Permit GP#48-22 LNDP 22-00090 withdraw water from the surface, with the exception of basins or traps that have a drainage area of less than 1 acre. The NPDES permit also requires ground cover within 14 calendar days on disturbed flat areas and ground cover within 7 calendar days on all areas within HOW Zones, perimeter dikes, swales, ditches, perimeter slopes and all slopes steeper than 3:1. Exceptions include slopes that are 10 feet or less in length and not steeper than 2:1 which must be stabilized within 14 calendar days and slopes greater than 50 feet which must be stabilized within 7 calendar days. It requires inspections of all erosion control measures and reporting every 7 days and within 24 hours of every 1,0-inch rain event in a 24-hour period. This permit also includes other new requirements which are listed in the text of the NPDES Stormwater Discharge Permit for Construction Activities and are included with the original copy of each land-disturbing permit. *All construction activities are required to complete and submit an electronic Notice of Intent (eNOI)form requesting a Certificate of Coverage (COC) under the NCG010000 Construction General Permit.The COC must be obtained prior to the commencement of any land-disturbing activity on the above-named Project, according to State Stormwater requirements. The NOI form may be accessed at deq.nc.gov/NDG01. Please direct questions about the NOI form to Paul Clark at Paul.clarkM'ncdenr.gov. After you submit a complete and correct NOI form, you will receive a link with payment instructions for the $100 annual permit fee. After the fee is received you will receive the COC via email. The $100 fee will be charged annually until the project receives a final land- disturbance inspection. Once the project is stabilized and receives the final land-disturbance inspection, you should file a Notice of Termination (NOT) with the State to final out the project. *Note the Land Resources Self Inspection Program Requirements. This program is separate from the NPDES reporting and requires inspection and documentation after each phase of construction.These phases include: Installation of perimeter erosion control measures, Clearing and Grubbing of existing ground cover, Completion of any phase of grading of slopes or fills, Installation of storm drainage facilities, Completion of construction or development, Establishment of permanent ground cover sufficient to restrain erosion and any Deviation from the approved plan. *Pre-construction meetings are optional. Contact Beth E. Wetherill at (910) 798-7139 to set up a meeting prior to land-disturbing activity onsite. If you do not choose to have a preconstruction meeting prior to starting work on site, you should contact us when activity begins and again when the initial measures have been installed. This Permit will expire one year from date of issue Acknowledgment of receipt of Permit if no construction activity begins on site.This permit may not be amended or transferred to another party without approval of this office. Owner By (please print) Beth E. Wetherill CPESC Erosion Control Supervisor Signature