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HomeMy WebLinkAboutSW8060509_HISTORICAL FILE_20060710STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 OGb5C) DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS E. HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 2p0(4, 0 7 lb YYYYMM DD A! NC®ENR North Carolina Department of Environment and Natural Resources Division of Coastal Management Michael F. Easley, Governor Charles S. Jones, Director William G. Ross Jr., Secretary August 15 2006 " g , ko MEMORANDUM: TO: Linda Lewis` Stormwater Division of Water Quality FROM: Doug Huggett, Major Permits Coordinator SUBJECT: CAMA / Dredge Permit Application Review Applicant: Summerhouse on Everett Bay c/o R. A. North Dev. I, Inc. Project Location: off of NCSR 1534, adjacent to'.Kings Creek and AIWW in Holly Ridge, Onslow County Proposed Project: Applicant proposes to develop a 1,033-lot SID with docking facilities and associated utilities. Please indicate below your agency's position or viewpoint on the proposed project and return this form. by September 7, 2006. If you have any questions regarding the proposed project, please contact Jon Giles at (910) 796-7221, when appropriate, in-depth comments with supporting data is requested. REPLY: This agency has no objection to the project as proposed. This agency has no comment on the proposed project. This agency approves of the project only if the recommended changes are incorporated. See attached. This agency objects to the project for reasons described in the attached comments. SIGNED DATE 127 Cardinal Drive Ext., Wilmington, Forth Carolina 28405-3845 Phone: 910-796-72151 FAX: 910-395-39641 Internet: www.nccoastalmanagement.net An Equal Opportunity 1 Affirmative Action Employer— 50% Recycled 110% Past Consumer Paper DIVISION. OF COASTAL MANAGEMENT FIELD INVESTIGATION REPORT 1. APPLICANT'S NAME: Summerhouse on Everett Bay / % R.A. North Development 1, Inc. 2. LOCATION OF PROJECT SITE: The project site is located off NCSR 1534, known locally as the Holly Ridge - Sneads Ferry Rd. adjacent to Kings Creek and AI W W in Holly Ridge, Onslow County. I'hoto Index - 2000: 26-350: A-Q(1-6); 27-370: A-E(10-15),C-E(1-9), F-X (1-11) 1995: 26-335: A-M(7-16); 27-356: E-J(1-I5), A-1)(8-14), K-X(I-11) 1989: 4 171 27: K-X(12-20); 4 172 4: J-X(13-21) State Plane Coordinates - X: 2456538 Y: 270931 GPS File: P061517A Lat:34°29'05.43155"N Long: 77°29'06.01532"W 3. INVESTIGATION TYPE: LAMA 4, INVESTIGATIVE PROCEDURE: Dates of Site Visit - 05-9-06; 05-16-06; 06-15-06 Was Applicant Present - Yes 5. PROCESSING PROCEDURE: Application Received - Compiete on 07/21/06 Office- Wilmington 6. SITE DESCRIPTION: (A) Local Land Use Play► - OnSIOW County Classification From LUP - Limited Transition (11) AEC(s) Involved: ES, EW, PT, CW (C) Water Dependent: Yes (D) Intended Use: Private / Commercial (E) Wastewater Trcatrnent: Existing - NIA Planned - Package Plant (F) Type of Structures: Existing -NIA Planned - 1,033 lot subdivision, 10-slip docking facility, boat ramp and associated utilities. (G) Estimated Annual Rate of Erosion: NIA Source - NIA 7. HABITAT DESCRIPTION: S. [AREA) —[)REDOF12 FII.LF�D Q11iEEZ. (A) Vegetated Wetlands - Coastal 3,556 ft.2 (shaded) (13) Non -Vegetated Wetlands - open water 4,820 ft.' (incorporated) (C) Other (Highground) 385 acres (disturbed) (D) Total Area Disturbed: 385 acres (E) Primary Nursery Area: Yes (F) Water Classification: SC Open: Stump Sound - YES; Kings Creek & Spicer Bay - NO PROJECT SUMMARY: The applicant is proposing a 1,033-lot subdivision, W-slip docking facility, boat ramp and associated utilities. 127 Cardinal Drive Ext., Wilmington, North Carolina 28405-3845 Phone: 910-796-72151 FAX: 910-395-39641 Internet: www.nccoastalmanagement.net An Equal Opportunity 1 Affirmative Action Employer - 50% Recycled 110% Post Consumer Paper Summerhouse on Everett Bay Page Two 9. PROJECT DESCRIPTION: The project site is located off SR1534, known locally as Holly Ridge — Sneads Ferry Rd., adjacent to Kings Creel: and Stump Sound in Holly Ridge, Onslow County. To get to the site-fi-om Wilmington take US Hwy 17 N to Sound Rd., which is the -first road on right after crossing NC Hwy 50 in Holly Ridge. Turn right onto Sound Rd. (at the sharp curve to the left Sound Rd. becomes Holly Ridge — Sneads berry Rd.) and travel approximately 2 miles. Dolph Everett Rd. will be on the left. Travel approximately 200 yards past Dolph Everett Rd. and there will be a construction entrance on the right for the project site. The project site is approximately 515 acres. Per the application approximately 86 acres of the 515-acre site are § 404 wetlands. The property is bordered by Kings Creels and vacant land to the west. vacant land to the east, SR 1534 to tine north and Stump Sound and Spicer Bay to the south. The property has two old dilapidated farmhouses and an old cemetery. The property also consists of farmland and is densely forested with hardwoods, conifer, and native underbrush. The current average elevation of the property is approximately 27' above mean sea level (NISI), ranging fi-om'2' \,ISL to 33' N4SL near the road. The high ground portion of the property has been thinned of most of the understory and some logging activities have.alreadv begun. In addition, gravel roads have been installed through out the project site. There are coastal wetlands located on the waterward sides of the site. On the western side of the property along KinL7s Creek the coastal wetland border ranges in width from 20' to 500' and is approximately 2,800' in length. Along tine southern property boundary adjacent to Spicer Bay and Stunnp Sound the coastal wetland border is approximately 10' to'400' in width and approximately 3,500' in length. The coastal wetlands consist primarily of Giant Cordgrass (.Sparfina Cvnocoroicles), Sea Lavender (Lin7onhim. Spy).), Black Needlerllsll (Aineus roL'martLli7us), Spike Grass (Distich is ,Spiccaa), Salt Nleadow Grass (Spartina Puten.$), Salt %Marsh- Cordgrass (Sp?artina cdlerniflora) and Glasswort (&dicornia spp,). The coastal wetland areas consist of mixed high and low marsh areas of varying size and composition. The Onslow County Land Use Plan classifies the upland areas of this project as Developed. The waters of the project site are classified as SC by the NC Division of Water Quality. The NC Division of \Marine Fisheries has designated this area of Kings Creels, Spicer Bay and Stump Sound as a Primary Nursery Area; and the waters adjacent to the proposed project are closed to the harvesting of shellfish in Spicer Bay and Kings Creek, and are 2.p en to the harvesting of shellfish in Stump Sound . PROPOSED PROJECT: The applicant is proposing to create a 1.033 lot single -fancily subdivision and related infrastructure and amenities. In addition, the applicant is proposing to install a 10-slip docking facility, and a boat ramp with an access pier. There would be approxintately 52,227 linear feet of streets (see sheet D-I for typical cross section), 30,000 linear feet of asphalt trails, 35,000 linear feet of sidewalks, 65.23 acres of ponds (see sheet D-d for typical cross section). and 85.42 acres of open space. There are 1 1 .§ 404 wetlands crossings proposed. These crossing would be accomplished by bridging with timber pilings, wood beam bents and wood decking. The bridges would vary in length frotrt 50' to 200' and would be approximately 2 1 ' in width. Please see sheet D-6 for typical bridge construction details. The applicant proposes to create 1,033 lots for single-family dwellings; giving a density of 2 units per acre. No. individual units are proposed as part of the application package. As such, each individual property owner proposing to develop within any AEC would be required to obtain their his/her own individual CANIA permit. 127 Cardinal Drive Ext., Wilmington, North Carolina 28405-3845 Phone: 910-796-72151 FAX. 910-395-39641 Internet: www.nccoastalmanagement.net An Equal Opportunity 1 AffrmatIve Aclion Employer — 50% Recycled 110% Post Consumer Paper Summerhouse on Everett Bay Page T1Vo Beginning along the northern portion of the property (adjacent to SR 1534) the applicant is proposing 3 entrances to the subdivision. The applicant is proposing a wastewater treatment plant (WWTP) and a 1.9 acre boat storage facility (maximum 100 boats.as stated by applicant) to be located in the northwestern portion of the project site. Moving south away from the road the applicant is proposing 4 small ponds ranging in size from .5 acres to 8.2 acres and one large 36-acre pond that runs north to south in the middle of the property. To be included'in this pond would be a pedestrian pathway, a beach area and a canoe and kayak launch. A proposed boat ramp area would be located in the northwestern portion of the project site adjacent to Kings Creek with all associated parking and utilities as follows: playground area. 7 trailer parking spaces, 36 standard parking spaces and boat launch with access pier and viewing dock. The proposed boat ramp would beuin at the edge of an asphalt driveway that would be bulkheaded to allow for the transition l.'ronn the asphalt to the elevated boat ramp. The proposed boat ramp would be elevated a mininlunl of 3' above the coastal wetland substrate. The ramp Nvould be 16' wide and a total of 235' long. The first 170' of the ramp would be constructed of wood and would traverse form east to west approximately 88' over high marsh and approximately 60' over lo%v marsh. The last 65' would be constructed of concrete with aluminum rails for support. The applicant is also proposing a groin if needed along the southern edge of the concrete ramp to prevent any erosion. The boat ramp would terminate approximately 38' waterward of normal high water (NFIW). The water depth at the end of the boat ramp would be —3' a Mean Low Water (MLW). A covered 16' x 16' gazebo is proposed landward of the 30' buffer on the northern side of the boat ramp. A 6' x 110' pier is proposed on the northern sick of the gazebo to access the floatin�a launch dock. The floating launch dock would be 89' in length and rangin4� in wiclth from 4' on the west end to 6' in the center.and 10' at the access ramp. See sheet "D-4" for details. Continuing south on the project site there would be 5 more ponds rangin<g in size from 1.2 acres to 6.5 acres. Some of the ponds are proposed to be infiltration ponds for the subdivision. A 10-slip docking facility is proposed on the southern shoreline adjacent to Stunip Sound located near the center of the property. The applicant is proposing a 6' x 288' pier. The pier would extend approximately 48' into the waterbodv. The pier would be elevated 6' above NHW. The pier would also Cross two naVlgablc ditches. There would be a 30' x 30' 4-azebo at the waterward end of the pier. A floating dock measuring 10' in Nvidth and 148' in length is proposed oil the eastern side of the +oazebo running parallel with the shoreline. The floating dock :would also have 9 finger piers measuring 4' in width and 30' in length. The water depths at the end of the finger piers would be approximately--2.5' @ NILW. In an effort to prevent boats mooring on the northern side of the floating dock a handrail would be installed. The floating dock would be located approximately 48" waterward of the edge of marsh. Please see sheet D-5 for pier details. 10. ANTICIPATED IMPACTS The proposed project would incorporate approximately 4,820 ft.' of Estuarine Waters and Public Trust area. Tine proposed pier and boat ramp would shade approximately 3,556 ft.' of coastal wetlands. The proposed subdivision, installation of the roads, utilities and stormwater measures would disturb approximately 385 acres Of h€gllgroLind. Submitted bv: J. W. Giles Date: AL€gUSt 14, 2006 Offiec: Wihiiington 127 Cardinal Drive Ext., Wilmington, North Carolina 28405-3845 Phone: 910.796-72151 FAX: 910.395-39641Internet: www,nccoastalmanagement.net An Equal Opportunity 1 Affirmative Action Employer — 5o%a Recycled 110%o Post Consumer Paper N nbiA m O c C f G =z (i Q 0 m 0 m �N F m o b p � O $ z co o x; z G) c 0 I w m X' 0 N N \ y x Ui ���rrriirr��t� t 10 00 w W m X U � Cnff KC r(�r4c N l W N N U / �fNr( N r q�arHC bat f< / O f gccM' r ef(0�t0 B°gQDs / T Carr l f (F '^ry �7 App �qr Rpq Fp g `Bhq�Nlq by OL�Of r f Ew„HrN Eq N SUMMERHOUSE ON a s E VE R E TT BAY o A HOLLY RIDGE, 'NORTH CAROLINA CA,9OiJAM EN IN& Rs P.O. DRAWER 1578 NEW BERN, NC 28563 DMMIM WATER DEPTHS @ SMALL GOAT LAUNCH 252.633.2424 REVISIONS Form DCM-MP-1 APPLICATION (To be completed by all applicants) b. City, town, community or landmark Holly Ridge 1. APPLICANT c. Street address or secondary road number Holly Ridge (SR-1534) a. Landowner: Name R.A. North Development I, Inc., Matthews, NC d. Is proposed work within city limits or planning jurisdiction? X Yes No Address 110 Matthews Station Street, Suite 2D City Matthews State NC Zip 28105 Day Phone (704) 321-0401 Fax (704)321-9823 b. Authorized Agent: Name Randy Allen -President Address 110 Matthews Station Street, Suite 2D City Matthews State NC Zip 28105 Day Phone (704) 321-0401 Fax (704)321-9823 c. Project name (if any) Summerhouse on Everett Bay MOTE: Permit will be issued in name of landowner(s), and/or project name. 2. LOCATION OF PROPOSED PROJECT a. County Onslow Revised 03195 e. Name of body of water nearest project (e.g. river, creek, sound, bay) Kings Creek/Stump Sound/Everett Bay 3. DESCRIPTION AND PLANNED USE OF PROPOSED PROJECT a. List all development activities you propose (e.g. building a home, motel, marina, bulkhead, pier, and excavation and/or filling activities. Road construction, pond excavation, sewer plant, water distribution, sewer collection, small craft launch, and pier. b. Is the proposed activity maintenance of an existing project, new work, or both? new work c. Will the project be for public, private or commercial use? Private d. Give a brief description of purpose, use, methods of construction and daily operations of proposed project. If more space is needed, please attach additional pages. (See Construction Narrative this section.) RECEIVED DCM WILMINGTON, NC JUL 2 12006 • Form DCM-MP-1 4. LAND AND WATER CHARACTERISTICS a. Size of entire tract 515.14 Acres b. Size of individual lot(s) Approximately 10,000 SIR c. Approximate elevation of tract above MHW or N`1i11, Avg - 27' MSL (2' MSL to 33' MSL) d. Soil type(s) and texture(s) of tract Clayey Sand (CS) Silty Sand (SNI) Poorly Grade Sand (SP) e. Vegetation on tract Agriculture, Timber f. Man-made features now on tract Old Farm House, Cemetary & Shelter g. What is the CAMA Land Use Plan land classification of the site? (Conswithe local land ase plan.) Conservation X Limited Transitional Developed Community Rural Other h. How is the tract zoned by local government? Planned unit development i. Is the proposed project consistent with the applicable zoning? ­X_Yes No (Attach zoning compliance certificate, if applicable. ) Has a professional archaeological assessment been done for the tract? X Yes No If yes, by whom? Bobby Southerlin 704 Main Street, Clayton, NC 27520 (919) 247-8610 Mobile (919) 553-9077 Fax is the project located in a National Registered Historic District or does it involve a National Register listed or eligible property? Yes X No 1. Are there wetlands on the site? X Yes No Coastal (marsh) X Other 404 If yes, has a delineation been conducted? Yes (Documentation available on plans) 0 Revised 03l95 m. Describe existing wastewater treatment facilities. (See WWTF description this section.) n. Describe location and type of discharges to waters of the state. (For example, surface runoff, sanitary wastewater, industrial commercial effluent, "wash down" and residential discharges.) No discharge to waters of the State are planned. o. Describe existing drinking water supply source. ONWASA 12" water main - Onslow County Water and Sewer Authority. 12" water main along Holly Ridge Road (SR-1534). S. ADDITIONAL INFORMATION In addition to the completed application form, the following items must be submitted: A copy of the deed (with state application only) or other instrument under which the applicant claims title to the affected properties. If the applicant is not claiming to be the owner of said property, then forward a copy of the deed or other instrument under which the owner claims title, plus written permission from the owner to carry out the project. An accurate, dated work plat (including plan view and cross -sectional drawings) drawn to scale in black ink on an 8 1/2" by l P white paper. (Refer to Coastal Resources Commission Rule 7J.0203 for a detailed description.) Please note that original drawings are preferred and only high quality copies will be accepted. Blue -line prints or other larger plats are acceptable only if an adequate number of quality copies are provided by applicant. (Contact the U.S. Army Corps of Engineers regarding that agency's use of larger drawings.) A site or location map is a part of plat requirements and it must be sufficiently detailed to guide agency personnel unfamiliar with the area to the Ll s • Form DCM-MP-1 site. Include highway or secondary road (SR) numbers, landmarks; and the like. • A Stormwater Certification, if one is necessary. (See Low Densiq Storm water Management Plan) • A list of the names and complete addresses of the adjacent waterfront (riparian) landowners and signed return receipts as proof that such owners have received a copy of the application and plats by certified mail. Such landowners must be advised that they have 30 days in which to submit comments on the proposed project to the Division of Coastal Management. Upon signing this form, the applicant further certifies that such notice has been provided. Name Mark & Arthur Yow Address 369 Holly Ridge Road, Holly Ridge, NC 28445 Phone (910)329-0484 Name William H. Rice Address 704 Tar Landing Road, Holly Ridge, NC 28445 Phone (910)329-7346 Name Greg Salmon Address PO Box 789, Wallace, NC 28466 Phone (910)285-7200 Name Glennie Murvin Address 385 Holly Ridge Road, Holly Ridge, NC 28445 Phone (910)329-7221 - A list of previous state or federal permits issued for work on the project tract. Include permit numbers, permittee, and issuing dates. • A check for $250 made payable to the Department of Environment, Health, and Natural Resources (DEHNR) to cover the costs of processing the application. • A signed AEC hazard notice for projects in oceanfront and inlet areas. A statement of compliance with the N.C. Environmental Policy Act (N.C.G.S. I I3A - 1 to 10) If the project involves the expenditure of public funds or use of public lands, attach a statement documenting compliance with the North Carolina Environmental Policy Act. 6. CERTIFICATION AND PERMISSION TO ENTER ON LAND I understand that any permit issued in response to this application will allow only the development described in the application. The project will be subject to conditions and restrictions contained in the permit. I certify that to the beg of my knowledge, the proposed activity complies with the State of North Carolina's approved Coastal Management Program and will be conducted in a manner consistent with such program. I certify that I am authorized to grant, and do in fact, grant permission to representatives of state and federal review agencies to enter on the aforementioned lands in connection with evaluating information related to this permit application and follow-up monitoring of the project. I further certify that the information provided in this application is truthful to the best of my knowledge. This is the Z0 day of _JN , 20_�Lk, Print Name �tJdvL 4C Signature Landowner or Authorized Agent Please indicate attachments pertaining to your proposed project. DCM MP-2 Excavation and Fill Information X DCM MP-3 Upland Development X DCM MP-4 Structures Information X DCM MP-5 Bridges and Culverts DCM MP-6 Marina Development DOTE; Please sign and date each attachment In the space provided at the hottom of each form Revised 03195 ® SUMMERHOUSE AT EVERETT BAY PART 1. DESCRIPTION OF THE PROJECT RA Management proposes to develop the 515 acres of land to be called Summerhouse at Everett Bay in Onslow County, near Holly Ridge, North Carolina, (site map included). The property is adjacent to the Atlantic Intracoastal Waterway and near Spicer Bay and contains 86 acres of wetlands. RA Management proposes the development of a single-family residential project. The proposed Project will be one of the largest developments in the area. The Project is proposed to provide a world class residential property not currently prevalent in the Holly Ridge area. The quality of the Project is designed to attract the regional consumer to live in Holly Ridge. The proposed Project is planned to be constructed over approximately a 10-year period. Construction of the 1,029 single-family residential lots and related infrastructure, are essential elements to be designed and permitted. The specific goals of the development are to create a high quality residential real estate project that significantly enhances the market value of the property; create a high quality alternative in the Town of Holly Ridge create a project that is consistent with the RA Management high quality project offering amenities, 40 services, and products in an environmentally sensitive and well -planned manner. The project will include providing for a treatment plan to handle and treat all wastewater derived from the 1,029 lots of the single-family development. Two on -site ponds will be used for waste water infiltration. The plant and associated discharges are being designed and permitted by Mckim and Creed Engineering. The land disturbance, storm water handling, best management practices and water access are being permitted by Trader Construction. The project will include day dock slips, reasonable water access through small boat ramp construction and observation piers for wetland and water viewing access and enjoyment for the lot owners of the subdivision. The observation piers will not provide dockage in the open water areas and in the wetland is a raised fixed walkway on piles outside of the CAMA line. In addition, deed restrictions and protective covenants will not permit individual lot piers. PART 2. NATURAL RESOURCES AND LAND DEVELOPMENT The siting of the Project is critical to its success. The proximity and connection to the Wilmington area are unique factors for the proposed site. The proximity of the Atlantic Intracoastal Waterway is also an important factor for siting the Project as proposed. DCM-MP-I Section 3.d —Construction Narrative The requirement for this project to be economically viable can be achieved primarily through the single-family lots planned for the Project. The natural resources of the Project site have been carefully used in planning for this primary and driving use for the success of the proposed Project. The single-family plan has been designed to incorporate and enhance the natural resources of the site. As described in this analysis, the sensitive natural resources were avoided at every possible step of the planning process to maximize the experience of the end user and visitor to the Project site. The location of this site, its natural resource amenities, and the available acreage all support the development of the Project at this site. No other sites were found in the area where such a project could be successfully contemplated. In light of the overall project purposes, this is the only site available and capable of serving the purposes of the proposed Project when taking into consideration costs, logistics, and existing methods for development. The Project as planned avoids impacts on natural resources completely. Avoidance of impacts on wetlands was also a central effort in the many considerations of land planning. The roads, utility corridors, and other developmental aspects of the proposed project were all planned after the wetlands were thoroughly investigated. The project includes bridges which are a substantial economic commitment to avoiding impacts to the 86 acres of wetland on -site. All environmental and regulatory requirements will been met or exceeded in the development of the proposed Project. Storm water handling will be handled by completing plans and design which carefully follow state and federal guidelines. The projects planned storm water handling methods provide substantial flexibility. The project is consistent with "low density" guidelines for land development but because of the substantial amount of ponds included in project plans, "wet detention" can be provided which likely will exceed typical pre -development hydraulic residence time requirements. Other best management practices such as those below will also be incorporated into plans for the high density pockets planned for the site. Submittals for these high density pockets will be presented as a modification at a later date. STORM WATER BEST MANAGEMENT PRACTICES (BMP) 1. Plans will provide for disconnected impervious areas where possible and reasonable. Roof downspouts will be disconnected from streets and culverts and runoff diverted over vegetated areas or infiltration systems (for treatment). 2. Also, roadway runoff can be converted to sheet flow and directed to wet detention and 1 or other best management practices. 3. Storm water controls will be designed to replicate and maintain the ® hydrographic condition at the site prior to the change in landscape and at a minimum include provisions that satisfy minimum standards. In most DCM-MP-1 Section 3A —Construction Narrative cases the post -development condition outfall rate and volume will be less than the pre -development condition and therefore exceed requirements. 4. Grassed road side ditches will be used in place of curb and gutter. Check dams, level spreaders, and other similar best management practices shall be used to minimize the effect of storm water runoff outfalling from the project tract. In areas where slopes exceed 5%, storm water collected in piped conveyance systems shall be directed away from surface waters and best management practices shall be employed at both the intake and the outlet areas. Curbs and gutters may be used in combination with sidewalks in areas to separate the pedestrian portion of a street-scape from the automobile portion and will encourage greater pedestrian mobility within the development. 5. No direct discharges of storm water to streams are planned for this development. Effective energy dissipation at the pipe outlet shall be accomplished to prevent scour of the area of any outfall. Stream, wetland and other aquatic area habitat integrity will be maintained by ensuring that storm water runoff is dispersed through a check dam, vegetated or grassed buffer zone prior or other BMP prior to outfalling from the final BMP in the "treatment train". 6. In addition, the use of trees —particularly evergreen species —can be used as an effective component of an integrated storm water management plan in an effort to reduce the amount of surface water runoff through site storm water interception, transpiration, and other processes. Ol 7. The groundwater table will be maintained through many mechanisms to include distributing the infiltration basin groundwater to areas throughout the site. Storm water ponds will be maintained with greater than minimum detention and normal pool to aid in naturalizing ground water tables. 8. Strict attention will be provided to erosion and sedimentation control and implemented for all construction. The development of these requirements shall be fully coordinated with the Land Quality Section. e DCM-MP-1 Section 3.d—Construction Narrative Form DCM-MP-2 s EXCAVATION AND FILL (Except bridges and culverts) Attach this form to Joint Application for CAMA Major Permit, Form DCM-MP-I. Be sure to complete all other sections of the Joint Application that relate to this proposed project - Describe below the purpose of proposed excavation or fill activities. All values to be given in feet. Access channel (MLW) - (NWL) ® Canal Boat basin Boat ramp Rock groin Rock breakwater Other (Excluding shoreline stabilization) ® Revised 03195 Length Width Average Existing Depth Final Project Depth 65' 16' Y 2.5' 1. EXCAVATION a. Amount of material to be excavated from below MHW or NWL in cubic yards 0 b. Type of material to be excavated NIA c. Does the area to be excavated include coastal wetlands (marsh), submerged aquatic vegetation (SAVs) or other wetlands? Yes 2jNo d. Highground excavation in cubic yards N/A 2. DISPOSAL OF EXCAVATED MATERIAL a. Location of disposal area NIA b. Dimensions of disposal area N/A c. Do you claim tide to disposal area? N/A Yes NIA N o If no, attach a letter granting permission from the owner. d. Will a disposal area be available for future maintenance? N/A Yes N/A No If yes, where? Form DCM-MP-2 e. Does the disposal area include any coastal wetlands (marsh), SAVs or other wetlands? NIA Yes NIA No f. Does the disposal include any area in the water? NIA Yes NIA No 3. SHORELINE STABILIZATION a. Type of shoreline stabilization NIA Bulkhead NIA Riprap b. Length NIA c. Average distance waterward of MHW or NWL NIA d. Maximum distance waterward of MHW or NWL NIA e. Shoreline erosion during preceding 12 months NIA (Source of information) C. Type of bulkhead or rprap material NIA g. Amount of fill in cubic yards to be placed below water level (1) Riprap NIA (2) Bulkhead backfill NIA h. Type of fill material NIA i. Source of fill material NIA 4. OTHER FILL ACTIVITIES (Excluding Shoreline Stabilization) a. Will fill material be brought to site? X Yes No 0 Revised 03195 If yes, (1) Amount of material to be placed in the plater Precast Concrete Boat Ramp f40'x16'x.5'-320CF) (2) Dimensions of fill area 40'x16' (3) Purpose of fill Small Boat Ramp. Precast concrete on Aluminum Rails. Will fill material be placed in coastal wetlands (marsh), SAVs or other wetlands? Yes No If yes, (1) Dimensions of fill area NIA (2) Purpose of fill NIA 5. GENERAL a. How will excavated or fill material be kept on site and erosion controlled? The fill material will be non -erosive pre -cast concrete on aluminum rails. Turbidity curtains will be placed during piling & ramp installation. b. What type of construction equipment will be used (for example, dragline, backhoe, or hydraulic dredge)? Excavator c. Will wetlands be crossed in transporting equipment to project site? X Yes No If yes, explain steps that will be taken to lessen environmental impacts. Mats & fabric will be placed on wetlands during construction. Summerhouse on Everett Bay Applicant or ojelct Natrte Signature —zz—d6 Date 0 is • Form DCM-MP-3 UPLAND DEVELOPMENT (Construction and/or land disturbing activities) Attach this form to Joint Application for CAMA Major Permit, Form DCM-MP-I. Be sure to complete all other sections of the Joint Application that relate to this proposed project. a. Type and number of buildings, facilities, units or structures proposed (1) Club House, (1) WWTF, (1) Community Post Box, (1) Viewing Dock wlSlips, (1) Small Craft Ramp, (1) Viewing Shelter Number of lots or parcels 1033 Residential Units c. Density (give the number of residential units and the units per acre) 1033 Residential Units 2.0 Units per Acre d. Size of area to be graded, filled or disturbed including roads, ditches, etc. --385 Acres e. If the proposed project will disturb more than one acre of land, the Division of Land Resources must receive an erosion and sedimentation control plan at least 30 days before land disturbing activity begins. If applicable, has a sedimentation and erosion control plan been submitted to the Division of Land Resources? X Yes NO If yes, date submitted April 28, 2006 f. List the materials (such as marl, paver stone, asphalt, or concrete) to be used for paved surfaces. Asphalt and Concrete Give the percentage of the tract within 75 feet of MHW or NWI,, or within 575 feet in the case of an Outstanding Resource Water, to be covered by impervious and/or built -upon surfaces, such as pavement, buildings, rooftops, or to be used for vehicular driveways or parking. Rooftops for Lots 187 & 188, Estimate 2,000 SF h. Projects that require a CAMA Major Development Permit may also require a Stormwater Certification. Has a site development plan been submitted to the Division of Environmental Management for review? X Yes No If yes, date submitted May 9, 2006 i. Describe proposed method of sewage disposal. See attached Wastewater Treatment Facilities Description in Section DCM-MP-1 Have the facilities described in Item 1. above received state or local approval? application Filed (Attach appropriate documentation) k. Describe location and type of proposed discharges to waters of the state (for example, surface runoff, sanitary wastewater, industrial/commercial effluent, "wash down" and residential discharges). No surface runoff to waters of the State. 1. Describe proposed drinking water supply source (e.g. well, community, public system, etc.) Public System - Onslow Couna water and Sewer Authority m. Will water be impounded? Yes X No If yes, how many acres? N/A If the project is a oceanfront development, when was the lot(s) platted and recorded? N/A Applic=rojecte Signature �J Date Revised 03/95 • • • Form DCM-MP-4 STRUCTURES (Construction within Public 'Trust Areas) Attach this form to Joint Application for CAMA Major Permit, Form DCM-MP-1. Be sure to complete all other sections of the Joint Application which relate to this proposed project. Dock(s) and/or Pier(s) (1) —Commercial 2 Community_ Private (2) Number 2 (Stump Sound) (Kings Creek) (3) Length (Stump Sound 160LF) (Kings Creek 89LF) (4) Width (Stump Sound 6FT) (Kings Creek 6FT) (5) Finger Piers X Yes No (1) Number 11 ti Length 30' (iii) Width 4' (6) Platform(s) X Yes No (i) Number 2 (ii) Length 30' (iii) Width 4' (7) Number of slips proposed ro Day slips n Stump Sound (8) Proximity of structure to adjacent riparian property lines 1000LF (9) Width of water body (Stump Sound 42T) {Kings Creek 73') (10) Water depth at waterward end of pier at M L W or NWL (Stump Sound 2.5') (Kings Creek 3') b. Boathouse (including covered lifts) (I) NIA Commercial NSA Private (2) Length NIA (3) Width NIA c. Groin (e.g. wood, sheetpile, etc.) (I) Number NIA (2) Length(s) NIA d. Breakwater (e.g. wood, sheetpile, etc.) (1) Length NIA (2) Average distance from MHW.. NWL or wetlands N/A (3) Maximum distance beyond MHW, NWL or wetlands NIA Revised 03195 e. Mooring buoys (1) N/A Commercial ,Community : Private MNumber N/A Description of buoy (Color, inscription, size, anchor, etc.) NIA (4) Width of water body N/A (5) Distance buoy(s) to be placed beyond shoreline NJA Mooring structure (boatlift, mooring pilings; etc.) (1) N!A Commercial —Community —Private (2) Number N/A (3) Length NIA (4) Width NIA g. Other (Give complete description) 2 Coered gazebos 1 @, Stump Sound 30' x 30' 1 @ Kings Creek 30' x 30' Kings Creek gazebo is located outside of coastal wetlands. Summerhouse on Everett Bay Applicant ar oject Name Signature Date Form DCM-MP-5 * BRIDGES AND • CULVERTS Attach this form to Joint Application for CAMA Major Permit, Form DCM-MP-1. Be sure to complete all other sections of the Joint Application that relate to this proposed project. 1. BRIDGES a. Public Private X b. Type of bridge (construction material) Timber Piling, Wood Beam Bents and Wood Decking c. Water body to be crossed by bridge 404 Wetlands d. Water depth at the proposed crossing at MLW or N W L NIA e. Will proposed bridge replace an existing bridge? Yes X No If yes, (1) Length of existing bridge N/A (2) Width of existing bridge NIA (3) Navigation clearance underneath existing bridge NIA (4) Will all, or a part of, the existing bridge be removed? (Explain) NIA Will proposed bridge replace an existing culvert(s)? Yes X No If yes, (1) Length of existing culvert NIA (2) Width of existing culvert N/A (3) Height of the top of the existing culvert above the MHW or NWL NIA Revised 03195 (4) Will all, or a part of, the existing culvert be removed? Explain) N/A g. Length of proposed bridge Varies 200' to 50' h. Width of proposed bridge 12' for Driveways 21' for Roads i, Height of proposed bridge above wetlands 4' to 10' Will the proposed bridge affect existing water flow? Yes X No If yes, explain NIA k. Navigation clearance underneath proposed bridge NIA Will the proposed bridge affect navigation by reducing or increasing the existing navigable opening? Yes X No If yes, explain NIA m. Will the proposed bridge cross wetlands containing no navigable waters? X Yes No If yes, explain 404 Wetlands with elevations higher than mean high water n. Have you contacted the U.S. Coast Guard concerning their approval? Yes X No If yes, please provide record of their action. Form DCM-MP-S j. Will the proposed culvert affect existing navigation 2. CULVERTS potential? Yes X No If yes, explain NIA a. Water body in which culvert is to be placed NIA b. Number of culverts Proposed NIA c. Type of culvert (construction material, style) EXCAVATION AND FILL NIA a. Will the placement of the proposed bridge or culvert require any excavation below the MHW or NWL? d. Will proposed culvert replace an existing bridge? Yes X No Yes X No If yes, If yes, (1) Length of area to be excavated NIA (1) Length of existing bridge NIA (2) Width of area to be excavated NIA (2) Width of existing bridge NIA (3) Depth of area to be excavated NIA (3) Navigation clearance underneath existing (4 Amount of material to be excavated in cubic bridge NIA yards NIA (4) Will all, or a put of, the existing bridge be removed? (Explain) NIA b. Will the placement of the proposed bridge or culvert require any excavation within: ___. Yes X No Coastal Wetlands _ S A V s _Other Wetlands If yes, e. Will proposed culvert replace an existing culvert? (1) Length of area to be excavated NIA Yes X No (2) Width of area to be excavated NIA If yes, (3) Amount of material to be excavated in cubic (1) Length of existing culvert NIA yards No (2) Width of existing culvert NIA (3) Height of the top of the existing culvert above c. Will the placement of the proposed bridge or culvert the MHW or NWL NIA require any highground excavation? (4) Will all, or a part of, the existing culvert be X Yes No removed? (Explain) NIA If Yes, (1) Length of area to be excavated 30' Each Side (2) Width of am to be excavated 4' (3) Amount of material to be. excavated in cubic f. Length of proposed culvert NIA yards 4CY/13 Bridges = 52CY g. Width of proposed culvert NIA d. If the placement of the bridge or culvert involves any excavation, please complete the following: h. Height of the top of the proposed culvert above the (1) Location of the spoil disposal am MHW or NWL NIA Approach to bridge bents i. Will the proposed culvert affect ousting water flow? (2) Dimensions of spoil disposal an Spoil will be incorporated in road bed Yes X No (3) Do you claim title to the disposal am? If yes, explain NIA X Yes No If no, attach a letter granting permission from the owner. • Revised 03195 P. I t TUL1i.200S 9c35RM ) COMMUNICATION RESULT REPORT .TTI 1,iCDENR WIRO RESULT PAGE__-- OPTIOM ADDRESS —(GROUP)-------------------- ------___ p. 37/37 OK -ILF MODE -------------- 7S7 MEMORY TX REASON FOR ERROR HANG UP OR LINE FAIL E-3) NO ANSWER g-1252533137� E-2) BUSY E-4) tQ 1- )CSIR'IILE CONNECTION----- -- State of Nardi Carolina Department of Environment and Natural Resources Wilmington Regional Office (910)796-7215 Michael F. Easley, Governor William G, Ross .Tr., Secretary Date: 07/11/2006 To; Carl Huddle CO: Carolina Engineers FAX #: 252 633-1370 FAX COVER SHEET # pages (excluding cover): 36 From: Miriam Hughes Division: Express Permitting FAX#: 910-350-2004 REMARIM-Summerhouse on Everett 131y. Hard copy to -follow h mail. IV Gardirnn] Drive ExtensiDn, Wilmington, XC 28405-3845 ` ephone (910) 7W7304 Fax(930) 350,2004 An Equa 1 opportunity AlUrmative Action Employer O�0 �WAT�9�G 0 � July 10, 2006 Mr. Randy Allen, President R.A. North Management 1, inc. 110 Matthews Station Street, Suite 2D Matthews, NC 28105 Subject: Stormwater Permit No. SW8 060509 Summerhouse on Everett Bay High Density Subdivision Project Onslow County Dear Mr. Allen: 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 'h C>\ The Wilmington Regional Office received a complete Stormwater Management Permit Application for Summerhouse on -Everett Bay on July 10, 2006. 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 060509, dated July 10, 2006, for the construction of the subject project. This permit shall be effective from the date of issuance until July 10, 2016, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within sixty (60) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at (910) 796-7215. Singly; ,f) / 3 '&L Edward Beck Regional Supervisor Surface Water Protection Section ENB/arl: , S:1WQSISTORMWATERIPERMIT1060509.ju106 CC' Carl Huddle, P.E.,-Carolina Engineers Onslow County Building Inspections Doug Huggett, Division of Coastal Management Linda Lewis Wilmington Regional Office Nol hcarolsna Central Files rlura!!Y North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Internet: www.scwaterquality.org Fax (910) 350.2004 1-877-623.6748 An Equal OppottunitylAffirmative Action Employer— 50% Recyeed110% Post Consumer Paper State Stormwater Management Systems Permit No. SW8 060509 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Randy Allen & R.A. North Management I, Inc, Summerhouse on Everett Bay NCSR 1534, Holly Ridge, Onslow County FOR THE construction, operation and maintenance of 4 wet detention ponds in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until July 10, 2016 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.6 on page 3 of this permit. The subdivision is permitted for 1,029 single family lots, each allowed a maximum amount of built - upon area, as specified in Section 11.16 of this permit. 3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 4. The overall density level of the project must remain at 30% or less. 5. The wet detention ponds are provided for the treatment of collected runoff. Additional treatment systems will be required for some future development, such as the boat ramp parking area and the clubhouse. Stormwater management measures for these areas must be submitted as a permit modification and approved by the Division prior to construction. Page 2 of 9 State Stormwater Management Systems Permit No. SW8 060509 C. The following design elements have been permitted for the wet detention pond . stormwater facilities, and must be provided in the systems at all times. a. Drainage Area, acres: Onsite, ft2: Offsite, ft2: b. Total Impervious Surfaces, ft2: Lots, ft2: Roads/Parking, ft2: Other, (pond surface) ft2: Offsite, ft2: C. Pond Depth, feet: d. TSS removal efficiency: e. Design Storm: f. Permanent Pool Elevation, FMSL g. Permitted Surface Area @PP, ft2: h. Permitted Storage Volume, W: i. Storage Elevation, FMSL: j. Controlling Orifice Pipe 0: k. Permanent Pool Volume, W: I. Forebay Volume, W: m. Maximum Fountain Horsepower: n. Receiving Stream 1 River Basin: o. Stream Index Number: p. Classification of Water Body: II. SCHEDULE OF COMPLIANCE Katydid Painted Spicer Twining Lady Lake Rose 19.84 26.38 71.03 48.27 864,230 1,149,113 6,146,752 2,102,641 0 0 0 0 500,351 506,919 3,099,175 789,432 208,500 283,500 1,233,500 419,000 201,247 98,881 658,192 179,032 90,604 191,400 1,207,483 191,400 0 0 0 0 6.0 6.0 6.0 6.0 90% 90% 90% 90% 1 1 1 1 17.0 18.0 17.0 15.0 81,122 124,538 1,202,610 191,639 85,802 128,380 1,220,676 197,291 18.0 19.0 18.0 16.0 3" 3" 6.25" 4" 279,078 517,044 8,714,253 873,166 66,224 119,755 756,122 171,835 1 2 3 3 King Creek Restricted Area 1 Cape Fear CPF24 18-87-4 "SC Sw HQW" 1. No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales) shown on the approved plans as part of the stormwater management system without submitting a revision to the permit and receiving approval from the Division. 2. The permittee is responsible for verifying that the proposed built -upon area for the entire lot, including driveways and sidewalks, 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. 3. If an Architectural Review Board or Committee is required to review plans for compliance with the BUA limit, the plans reviewed must include all proposed built -upon area. Any approvals given by the Board do not relieve the homeowner of the responsibility to maintain compliance with the permitted BUA limit. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The 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 3 of 9 State Stormwater Management Systems Permit No. SW8 060509 6. 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. e. Further subdivision, acquisition, or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f.' Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 7. The Director may determine that other revisions to the project should require a modification to the permit. 8. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 9. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 10. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. 11. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 12. Permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 13. The permittee shall at all times provide the operation and maintenance necessary to assure that all components of the permitted stormwater system function at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and revegetation of side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of structures, orifice, catch basins and piping. g. Access to all components of the system must be available at all times. 14. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. Page 4of9 Stake Stormwater Management Systems Permit No. SW8 060509 15. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 16. Prior to the sale of any lot, the following deed restrictions must be recorded: a. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW8 060509, 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, inclusive, is as follows: 394 lots @2,800 ft2: Lots 93-277, 624-793 & 796-834 218 lots @3,200 ft : Lots 1-51, 365-397, 522-539, 837-869, 897-926, & 977-1029. 248 lots @3,500 ft2: Lots 52-92, 278-339, 419-505, 657-620, 794-795, & 835-836. 92 lots @4,000 ft2: Lots 340-364, 398-418, 506-521, 540-566, & 621-623. 77 lots @4,500 ft2: Lots 870-896 & 927-976 The 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 and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. g. Lots within CAMA's Area of Environmental Concern may be subject to a reduction in their allowable built -upon area due to CAMA regulations. h. All runoff on the lot must drain into the permitted system. This may be accomplished through providing roof drain gutters which drain to the street, grading the lot to drain toward the street, or grading perimeter swales and directing them into the pond or street. Lots that will naturally drain into the system are not required to provide these measures. Built -upon area in excess of the permitted amount will require a permit modification. 17, A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of recording the plat, and prior to selling lots. The recorded copy must contain all of the statements above, the signature of the Permittee, the deed book number and page, and the stamp/signature of the Register of Deeds. Page 5of9 State Stormwater Management Systems Permit No. SW8 060509 18. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ personnel. The facility must be in compliance with all permit conditions. Any items not in compliance must be repaired or replaced to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 19. Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following criteria: a. The fountain must draw its water from less than 2' below the permanent pool surface. b. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. c. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for the fountain's pump is based on the permanent pool volume. 20. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. III. GENERAL CONDITIONS 1. This permit is not transferable to any person or entity except after notice to and approval by the Director. In the event there is either a desire for the facilities to change ownership, or there is a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the Division of Water Quality accompanied by appropriate documentation from the parties involved. This may include, but is not limited to, a deed of trust, recorded deed restrictions, Designer's Certification and a signed Operation and Maintenance plan. The project must be in good standing with DWQ. The approval of this request will be considered on its merits and may or may not be approved. 2. The permittee is responsible for compliance with all of the terms and conditions of this permit until such time as the Director approves the transfer request. 3. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 4. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 5. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. 7. Permittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the stormwater facilities during normal business hours. Page 6of9 State Stormwater Management Systems Permit No. SW8 060509 8. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days. 9. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. Permit issued this the 10th day of July 2006. NORTH QAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Alan'W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 060509 Page 7 of 9 • 0 ltd State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may he pholoeopied for use as an original I. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): R.A.North Management I, Inc. 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Randy Allen - President 3. Mailing Address for person listed in item 2 above: 110 Matthews Station Street, Suite 21) City: Matthews State:NC zip:28105 Telephone Number: ( 704 ) 321-0401 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.) - Summerhouse on Everett Bav 5. Location of Project (street address): SR 1534 City: Holly Ridge County:Onslow 6. Directions to project (from nearest major intersection): From Hwy 17 in Holly Ridp-e, NC take SR 1538 to SR 1534. Protect Site located 3.0 miles on SR 1534. 7. Latitude: 71, 46'13 Longitude: 18, 46'N of project (see quadrangle map this section) 8. Contact person who can answer questions about the project: Name: Randy Allen - President Telephone Number: ( 704 ) 321-0401 II. PERMIT INFORMATION: 1. Specify whether project is (check one): X New Renewal Modification 0 Form SWU-101 Version 3.99 Page I 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 N/A and its issue date (if known) NIA . 3. Specify the type of project (check one): X Low Density High Density Redevelop General Permit Other 4. Additional Project Requirements (check applicable blanks): X 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. Ill. PROJECT INFORMATION is 0 1. In the space provided below, summarize how stormwater mill be treated. Also attach a detailed narrative (one to two pages) describing stormwater management for the project. See Stormwater Management Detailed Summary this Section 2, Stormwater runoff from this project drains to the White Oak River basin. 3. Total Project Area: 515 acres 4. Project Built Upon Area: 23.03% 5. How many drainage areas does the project have? 5 6. Complete the following information for each drainage area. If there are more than two drainage areas. in the project, attach an additional sheet with the information for each area provided in the same format as below, Basin Information Katydid Pond Drainage Area Receiving Stream Receiving Stream Class SC �Uaters-�[ Drainage Area 864,230 Existing Impervious Area 0 Proposed Impervious Area (Total) 500,351 % Impervious Area (Total) 57.90% Impervious* Surface Area Katydid Pond Drainage Area On -Site Streets R. Sidewalks 201,247 Lots 888-896 (4,500/lot) 40,500 Lots 897-926 (3,200/lot) 96,000 Lots 937-952 (4,500/lot) 72,000 Pond Surface 90,604 Total (SF) 500,351 Total (AC) 11.49 lPes�r, �re� * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form S WU-101 Version 3.99 Page 2 of 4 • L Basin Information Painted Lady Pond Drainage Area Receiving Stream Name P KIlMj G� Receiving Stream Class SC WtaWsSW Ow Drainage Area — 4-N-9-, i3 fl 1qq 11 Existing Impervious Area 0 Proposed Impervious Area (Total) 506,919 % Impervious Area (Total) 44.1 1% Impervious* Surface Area Painted Lady Pond Drainage Area On -Site Streets & Sidewalks 98,881 Lots 37-52 (3,200/lot) 48,000 Lots 52-76 (3,500/lot) 87,500 Lots 547-551 (4,000/lot) 20,000 Lots 568-599 (4,000/lot) 128,000 Pond Surface 124,538 Total (SF) 506,919 Total (AC) 11.64 Basin Information Twining Rose Pond Drainage Area Receiving Stream Name�:,1 Receiving Stream Class SC WwersSw {-(('y 'k/ Drainage Area 2,102,641 Existing Impervious Area 0 Proposed impervious Area (Total) 789,432 % Impervious Area (Total) 37.54% Impervious* Surface Area Twining Rose Pond Drainage Area On -Site Streets & Sidewalks 179,032 Lots 837-869 (3,200/lot) 105,600 Lots 870-888 (4,500/lot) 85,500 Lots 927-937 (4,500/lot) 49,500 Lots 953-976 (4,500/lot) 108,000 Lots 977-998 (3,200/lot) 70,400 Pond Surface 191,400 Total (SF) 789,432 Total (AC) 18.12 �) 0 &CMS ?JL )Fes r, *?,2 Page 2a of 4 • • s Basin Information Spicer Lake Drainage Area Receiving Stream Name Spa Receiving Stream Class Sc wags < HOW Drainage Area 6,146,752 Existing Impervious Area 0 Proposed Impervious Area (Total) 3,099,175 % Impervious Area (Total) 50.42% Impervious* Surface Area Spicer Lake Drainage Area On -Site Streets & Sidewalks 658,192 Lots 1-37 (3,200/lot) 118,400 Lots 300-339 (3,500/lot) 140,000 Lots 340-364 (4,000/lot) 100,000 Lots 356-397 (3,200/lot) 105,600 Lots 398-418 (4,000/lot) 84,000 Lots 419-505 (3,500/lot) 304,500 Lots 506-521 (4,000/lot) 64,000 Lots 522-539 (3,200/lot) 57,600 Lots 540-547 (4,000/lot) 32,000 Lots 550-566 (4,000/lot) 68,000 Lot 567 (3,500/lot) 3,500 Lots 600-620 (3,500/lot) 73,500 Lots 621-623 (4,000/lot) 12,000 Lots 977-998 (3,200/lot) 70,400 Pond Surface 1,207,483 Total (SF) 3,099,175 Total (AC) 71.15 DiAsK5 &5h_ Aeq2 Page 2b of 4 • e Basin Information Total Drainage Area Receiving Stream Name Spicer Bay/Everett Bay/Kings Creek Receiving Stream Class SC Wf t s SW Drainage Area 21,013,177 - Existing Impervious Area 0 Proposed Impervious Area (Total) 4,838,372 % Impervious Area (Total) 23.03% Impervious* Surface Area Total Drainage Area On -Site Streets 961,561 On -Site Sidewalks 226,757 Club House & Parking 40,074 Wastewater Treatment Plant (42,544� a Boat Storage 82,736 Lots 3,434,700 . Future Development 50,000 q,Doo Total: 4,838,372 t, VVq, 0-M , M5A 7. How was the off -site impervious area listed above derived? No off -site impervious areas drain into the site. Cn� Page 2c of 4 • IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS (See document this section) 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. 1. The following covenants are intended to ensure ongoing compliance with stale slormwater management permit number as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the State. 2. No more than square feet of any lot shall be covered by structures or impervious materials. Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the water surface of swimming pools. 3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires a stale slormwater management permit modification prior to construction. 5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control system. These connections to the slormwater control system shall he performed in a manner that maintains the integrity and performance of the system as permitted. By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Form SWU-102 Wet Detention Basin Supplement Form SWU-103 Infiltration Basin Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-101 Version 3.99 Page 3 of 4 VI. SUBMITTAL REQUIREMENTS . Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. Initials • Original and one copy ofthe Stormwater 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 & 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):Carl C. Huddle, PE Mailing Address: P.O. Drawer 1578 City: New Bern Phone: ( 252 ) 633-2424 Vlll. APPLICANT'S CERTIFICATION State: NC Lip:28563 Fax: ( 252 1 633-1370 I, (print or type name of person listed in General Information, item 2) RA Dti A c LE r3 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. Signature: • Form SWU-101 Version 3.99 Page 4 of 4 Date: `0 [ts10U, Permit No. (to be provided by UWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM LOW DENSITY SUPPLEMENT This form maybe photocopied for use at 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. 1. PROJECT INFORMATION Project Name Summerhouse on Everett Bay Contact Person: Randy Allen - President Phone Number: ( 704 ) 321-0401 Number of Lots: -9�35 KIM Allowable Built Upon Area Per Lot*: (see attwhinem this section) *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. 11. 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. • BUAILot - 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. Form SWU-104 Rev 3.99 Page I of 2 • • Calculation: (SA x DF) - RA - OA = BUA No. Lots Lot (calculations included in this section) 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 an agent on the Stormwater Management Permit Application Form, the agent may initial below. Applicants Initials 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. (/l c. Built upon area calculations are provided for the overall project and all lots. r d. Project conforms to low density requirements within the ORW AEC (if applicable). [ 15A NCAC 2H.1007(2)(b)l Form SWU-104 Rev 3.99 Page 2 of 2 • rn co LO M M fA 00 r- O CO r L O qf LO 6 00 c0 U N f— LO r r 00 Q `` N m C1 L a r.+ O J LO c i LL 6) V N N' � a_ to LO cn o LC] 00 -: r O Ln N N M L!i LO �f? J LO M N CIO r- N r LL O yo O O O a O O Cli r.. fA C] 00 O N O LO O O O Ln M � N EQ M M m C 0) N ur ti rn ti C CO6 00 ti O LO Cfl N 0) LO G7 a� Q CO 00 Lr) M r N M Q) 1 00cq 6) 3 f- Z 4 m O 06 LO Cp O (4 LO o0 O Cfl J M LO 00 00 O) ti ~ N O CO N V C LO c*] 6) 6) 00 M ti M N � L6 N M M C] N Nr r Lo M ro r E E o fA J ca -43- co co ~ CDO 0 Q a) CO`') N N E m M z 0 m , O m m m Offim'.7 In accordance with Title 15 NCAC 2H. 1 000, the Coastal Stormwater Management Regulations, deed restrictions and protective covenants are required for Low Density Residential Subdivisions 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, Randy Allen - President acknowledge and affirm by my signature below, that I will cause the following deed restrictions and protective covenants to be recorded for Summerhouse on Everett Bay prior to the sale of any lot: 1. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW SOcOOSOct , 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. a 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 (See Attachment) square feet. This aIto tted 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. Filling in orpiping of any vegetative conveyances (ditches, swales, etc.) associated with the. development except for average driveway crossings, is strictly prohibited by any persons. 9. Each lot will maintain a 30' wide vegetated buffer between all impervious areas and surface waters. 10. All roof drains shall terminate at least 30' from the mean high water mark of surface waters. Signature: _..._..,-� _. _... Date: 15 0 r I, a Notary Public in the State of /-/ e. County of Ca.,AAI do hereby certify that 6✓x4 personally appeared . t before me this they,Ixw day of_,a,2L& ,20 ol. , and acknowledge the due execution of the foregoing instrument. Witness my hand and official seal, SEAL Signature V-- ool{ornr� NO I- My Commission expires RECEIVED A G moo•. t_i JUN 16 2(>r16 DWQ FROJ #„ 0(00_:'O • e Permit No. S(U 50(0050f (to be provided by D WQ) State of North Carolina Department of Environment and Natural Resources • Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT his form may be photocopied for use as an original DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Summerhouse on Everett Contact Person: Carl C. Huddle, PE Phone Number: ( 252 ) 633-2424 For projects with multiple basins, specify which basin this worksheet applies to: Katydid Pond elevations Basin Bottom Elevation Permanent Pool Elevation ® Temporary Pool Elevation areas Permanent Pool Surface Area Drainage Area Impervious Area volumes Permanent Pool Volume Temporary Pool Volume Forebay Volume Other parameters SA/DA i Diameter of Orifice Design Rainfall Design TSS Removal 2 OForm 5i1W-102 Rev 3.99 11.00 ft, (floor of the basin) 17.00 ft. (elevation of the orifice) 18.00 $. (elevation of the discharge structure overflow) 81,122.00 sq. ft. (water surface area at the orifice elevation) 19.84 ac. (on -.site and off -site drainage to the basin) 11.49 ac. (on -site and off -site drainage to the basin) 279,078.00 cu. ft. (combined volume of main basin and forebay) 85,803.00 cu. ft. (volume detained above the permanent pool) 66,224.00 cu. ft. (approximately 20% of total volume) 3.26 (surface area to drainage area ratio from DWQ table) 3.0 in. (2 to 5 day temporary pool draw -down required) 1.0 in. 90 % (minimum 85% required) Page i of 4 Footnotes: 1 When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H . 1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applicants jnitials a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). b. The forebay volume is approximately equal to 20% of the basin volume. c. The temporary pool controls runoff from the design storm event. d. The temporary pool draws down in 2 to 5 days. e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) ® f. The basin length to width ratio is greater than 3: I. g. The basin side slopes above the permanent pool are no steeper than 3:1. 019 h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). 04 i. Vegetative cover above the permanent pool elevation is specified. j. A trash rack or similar device is provided for both the overflow and orifice. k. A recorded drainage easement is provided for each basin including access to nearest right- of-way. 1. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. in. A mechanism is specified which will drain the basin for maintenance or an emergency. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one) does X does not incorporate a vegetative filter at the outlet. This system (check one) does X does not incorporate pretreatment other than a forebay. ® Form S W U-102 Rev 3.99 Page 2 of 4 9 Maintenance activities shall be performed as follows: After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 4.5 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 4.5 feet in the forebay, the sediment shall be removed. Sediment Remo\'al EI, 12.5 Bottom Elevaton 11.0 FOREBAY BASIN DIAGRAM ill in the blank) Permanent Pool Elevation 17.0 Sediment Removal Elevation 12.5 Bottom Elevation 11.0 MAIN POND 75% 1250/1 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. b. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. Form SWU-IO2 Rev 3.99 Page 3 of 4 7. All components of the wet detention basin system shall be maintained in good working order. is I acknowledge and agree by my signature below that I am responsible for the performance of the seven maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. • Print name: Randy Allen Title: President Address: 110 Matthews Station Street, Suite 213, Matthews, NC 28105 Phone: (704) 321-0401 Signature: Date: i - N Ote: 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, /4"At" _- , a Notary Public for the State of I1 C County of OAQ-cc� , do hereby certify that _ a-L.--� personally appeared before me this 15.zJ,- day of. _4,.u/x-E ,-200L and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, oO�plNY B: ROO �OTa9y� JBILN SEAL My commission expires -5- 1 r - ra Form SWU-102 Rev 3.99 Page 4 of 4 Permit No. JW 90670 SO (io he provided by D 6VQ) State of North Carolina . Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may he photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I, PROJECT INFORMATION Project Name. Summerhouse on Everett Bay Contact Person: Carl C. Huddle, PE Phone Number: t 252 1 633-2424 _ For projects with multiple basins, specify which basin this worksheet applies to: Painted Lady elevations Basin Bottom Elevation 9.00 ft. (floor of the basin) Permanent Pool Elevation 18•00 ft. (elevation of the orifice) 40 Temporary Pool Elevation 19.00 ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 124,538.00 sq. ft. (water surface area at the orifice elevation) Drainage Area 26.38 ac. (on -site and off -site drainage to the basin) Impervious Area 11.64 ac. (on -site and off -site drainage to the basin) volumes Permanent Pool Volume 517,044.00 CU. ft. (combined volume of main basin and forebay) Temporary Pool Volume 128,380.00 Cu. ft, (volume detained above the permanent pool) Forebay Volume 119,755.00 cu. ft. (approximately 20% of total volume) Other parameters SAIDAi 2.34 (surface area to drainage area ratio from DWQ table) Diameter of Orifice 3.0 in. (2 to 5 day temporary pool draw -down required) Design Rainfall 1.0 in. Design TSS Removal 2 90 % (minimum 85% required) Form SUM-102 Rev 3.99 Page 1 of 4 Footnotes: l When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDFNR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. 11. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H . 1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applicants Initials ow- a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). b. The forebay volume is approximately equal to 20% of the basin volume. rd c. The temporary pool controls runoff from the design storm event. d. The temporary pool draws down in 2 to 5 days. e. If required, a 30-Foot vegetative filter is provided at the outlet (include non -erosive flow calculations) f. The basin length to width ratio is greater than 3:1. g. The basin side slopes above the permanent pool are no steeper than 3.1. 04 h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). cA i. Vegetative cover above the permanent pool elevation is specified. A trash rack or similar device is provided for both the overflow and orifice. } k. A recorded drainage easement is provided for each basin including access to nearest right- of-way. 1. if the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. in. A mechanism is specified which will drain the basin for maintenance or an emergency. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one) does X does not incorporate a vegetative filter at the outlet. This system (check one) does X does not incorporate pretreatment other than a forebay. Form S W U-102 Rev 3.99 Page 2 of 4 • • Maintenance activities shall be performed as follows: After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below), Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads When the permanent pool depth reads Sediment RcmNal El. 14.25 Bottom Elevat'611 13.0 FOREBAY 4.5 feet in the main pond, the sediment shall be removed. 3.75 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the blank) Permanent Pool Elevation 15.00 Sediment Removal Elevation 13.5 75% --------------------------------------------------------------------------------- Bottom Elevation 12.0 125% MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. ODorm SWU-1Q2 Rev 3.99 Page 3 of 4 7. All components of the wet detention basin system shall be maintained in good working order. • I acknowledge and agree by my signature below that I am responsible for the performance of the seven maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: Randy Allen Title: President Address: 110 Matthews Station Street, Suite 21), Matthews, NC 28105 Phone: (704) 321-0401 Signature: Date: & - /s• o6 N ote: 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, _LII.,_ -4 •, a Notary Public for the State of Al C— County of e-to—,tJ , do hereby certify that &"U4 personally appeared before me this / zA,, day of Boob and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, qG •• AU B`-�� • O� �I UIVrr.rR,N SEAL My commission expires --z1— f a 0 Form SWU-102 Rev 3.99 Page 4 of 4 Permit No. 5w Y (560501 (to be provided by D 1VQ) State of North Carolina IsDepartment of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may he photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION Project Name: Summerhouse on Everett Bay Contact Person: Carl C. Huddle, PE Phone Number: ( 252 ) 633-2424 For projects with multiple basins, specify which basin this worksheet applies to: Spicer take elevations Basin Bottom Elevation 8.00 Permanent Pool Elevation 17.00 Temporary Pool Elevation 18.00 ft. (floor of the basin) ft. (elevation of the orifice) ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 1,202,610.00 sq. ft. Drainage Area 141.11 ac. Impervious Area 71.15 ac. volumes (water surface area at the orifice elevation) (on -site and off -site drainage to the basin) (on -site and off -site drainage to the basin) Permanent Pool Volume 8,714,253.00 cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume 1,220,676.00 Cu. ft. (volume detained above the permanent pool) Forebay Volume 756,122.00 cu. ft. (approximately 20% of total volume) Other parameters SA/DAi 2.7 (surface area to drainage area ratio from DWQ table) Diameter of Orifice 6.25 in. (2 to 5 day temporary pool draw -down required) Design Rainfall 1.0 in. Design TSS Removal 2 90 % (minimum 85% required) ® Form SUW-102 Rev 3.99 Page I of 4 Footnotes: I When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. IL REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H . 1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applica7tlitiaks a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). b. The forebay volume is approximately equal to 20% of the basin volume. Gi! c. The temporary pool controls runoff from the design storm event. d. The temporary pool draws down in 2 to 5 days. e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) ® _ - f. The basin length to width ratio is greater than 3.1. g. The basin side slopes above the permanent pool are no steeper than 3:1. h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detaiI). i. Vegetative cover above the permanent pool elevation is specified. 6111 j. A trash rack or similar device is provided for both the overflow and orifice. k. A recorded drainage easement is provided for each basin including access to nearest right- of-way. al — 1. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. in. A mechanism is specified which will drain the basin for maintenance or an emergency. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one) does X This system (check one) does X ® Form SWU-102 Rev 3.99 does not incorporate a vegetative litter at the outtet. does not incorporate pretreatment other than a forebay. Page 2 of 4 Maintenance activities shall be performed as follows: 40 1, After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads When the permanent pool depth reads Sediment Remo\ -al El. 12.5 -- ----------------------- Bottom I levat n 11.0 FORRQAY 6.75 feet in the main pond, the sediment shall be removed. 4.5 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (Jill in the blank) Permanent Pool Elevation 17.0 Sediment Removal Elevation 10.25 75% ------------------------------------------------------------- ------------------ Bottom Elevation 8.0 1251/'? MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. OForm SWU-102 Rev 3.99 Page 3 of 4 7. All components of the wet detention basin system shall be maintained in good working order. r1 u I acknowledge and agree by my signature below that I am responsible for the performance of the seven maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: Randy Allen Title: President Address: 110 Matthews Station Street, Suite 2D, Matthews, NC 28105 Phone: (704) 321-0401 Signature: Date: b - 15- o b N 0 te: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. a Notary Public for the State of 'Jc County of (�nr�.,J , do hereby certify that ecv dg aj r personally appeared before me this «,c�, day of_ a"'e2L . -7-6aA and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, p p�ilY B• R0� IOTA/? . SEAL My commission expires 5 - ez r - 16 Form SWU-102 Rev 399 Page 4 of 4 Permit No. s(o ocC'O.SDq (to be provided by D WQj State of North Carolina • Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROTECT INFORMATION Project Name: Summerhouse on Everett Bay Contact Person: Carl C. Huddle, PE Phone Number: ( 252 ) 633-2424 For projects with multiple basins, specify which basin this worksheet applies to: Twining Rose elevations Basin Bottom Elevation 8.00 ft. Permanent Pool Elevation 15.00 ft. Temporary Pool Elevation 16.00 ft. areas Permanent Pool Surface Area 191,639.00 sq. ft. Drainage Area ' 48.27 ac. Impervious Area 18.13 ac volumes (floor of the basin) (elevation of the orifice) (elevation of the discharge structure overflow) (water surface area at the orifice elevation) (on -site and off -site drainage to the basin) (on -site and off -site drainage to the basin) Permanent Pool Volume 873,166.00 cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume 197,291.00 cu. ft. (volume detained above the permanent pool) Forebay Volume 171,835.00 cu. ft. (approximately 20% of total volume) Other parameters SA/DAi 2.0 (,surface area to drainage area ratio from DWQ table) Diameter of Orifice 4.0 in. (2 to 5 day temporary Pool draw -down required) Design Rainfall 1.0 in. Design TSS Removal 2 90 % (minimum 85% required) ® Farm SUW-102 Rev 3.99 Page 1 of 4 Footnotes: When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the • actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. IL REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H . 1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applicants Initials a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). CIZ — b. The forebay volume is approximately equal to 20% of the basin volume. c. The temporary pool controls runoff from the design storm event. d. The temporary pool draws down in 2 to 5 days. e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) f. The basin length to width ratio is greater than 3:1. a- - g. The basin side slopes above the permanent pool are no steeper than 3:1. h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). i. Vegetative cover above the permanent pool elevation is specified. j. A trash rack or similar device is provided for both the overflow and orifice. / k. A recorded drainage easement is provided for each basin including access to nearest right- of-way. l . If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. in. A mechanism is specified which will drain the basin for maintenance or an emergency. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one) does X does not incorporate a vegetative fitter at the outlet. This system (check one) does X does not incorporate pretreatment other than a forebay. ® Form S W U-102 Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as follows: 01, After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 5.25 When the permanent pool depth reads 3 Sediment Removal El Bottom E 12.0 11.0 1 15% FOREBAY feet in the main pond, the sediment shall be removed. feet in the forebay, the sediment shall be removed. BASIN DIAGRAM ill in the blank) Permanent Pool Elevation 15.0 Sediment Removal Elevation 9.75 Bottom Elevation 8.0 MAIN POND 175% -1259/9 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. OForm S W i I-102 Rev 3.99 Page 3 of 4 7. All components of the wet detention basin system shall be maintained in good working order. isacknowledge and agree by my signature below that I am responsible for the performance of the seven maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. 0 Print name: Randy Allen Title: President Address: 110 Matthews Station Street, Suite 2D, Matthews, NC 28105 Phone: (704)321-0401 Signature: Date: _ G - /,� - 0 6 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. l 'nA'OPP, , a Notary Public for the State of ��— County of lna�J , do hereby certify that personally appeared before me this _ day of , o200 b and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, bpiHY 8. Rp� SU kAUBLNG 'n4� NORM �P SEAL My commission expires S - e2 1 - / o 0 Form SWU-102 Rev 3.99 Page 4 of 4 CAROLINA ENGINEERS, PA Geotechnical • Construction Materials • Forensic • Site Development • Surveying RECEIVED July 7, 2006 �UL� 1 2[106 Ow Ms. Linda Lewis pgOJ # NC Department of Environment and Natural Resources Division of Water Quality Section — Wilmington Regional Office 127 Cardinal Drive Extension Wilmington, NC 28405-3845 RE: Stormwater Management Wet Detention Pond & Associated Pipe Network Calculations Sealed Cover Sheet Drawing D-3 Summerhouse on Everett Bay, Onslow County, NC Ms. Lewis, On behalf of R.A. North Development I, Carolina Engineers, PA is submitting a sealed copy of the Stormwater Management Wet Detention Pond & Associated Pipe Network Calculations cover sheet. Also enclosed is Drawing D-3. Please note the table in Drawing D3 has a note specifying an 8 inch diameter steel pipe orifice for Spicer Lake. f additional information is needed or you have any questions, please call. Sincerely, Carolina Engineers, PA Carl C. Huddle, P.E. Project Manager Enclosure(s): 2- sealed cover sheet copies 2- D-3 drawing sheets PO Box 1595, New Bern, NC 28563, Tele: (252) 633-2425, Fax: (252) 633-1370, www.carolinaengineers.com STORMWATER MANAGEMENT WET DETENTION POND ASSOCIATED PIPE NETWORK CALCULATIONS For Summerhouse on Everette Bay Holly Ridge, North Carolina RE .CEIVED May 2006 JUL. 1. o 2006 REVISED JUNE 2006 M05Dq PROJ # Prepared For: Carolina Engineers New Bern, NC Prepared By: F. E, Ifs Civil and Environmental Engineering 3100 NC 27 East Coats, NC 227521 (910) 897-7070 (910) 897-6767 Fax CTC Project # 082001 SEAL 0 C, ++I"+0N., -7/6/0� STORMWATER MANAGEMENT WET DETENTION POND ASSOCIATED PIPE NETWORK CALCULATIONS For Summerhouse on Everette Bay Holly Ridge, North Carolina RECEIVED May 2006 REVISED JUNE 2006 Prepared For: Carolina Engineers New Bern, NC Prepared By: >o C avtan, f,*, F E., hic Civil and Environmental Engineering 3100 NC 27 East Coats, NC 227521 (910) 897-7070 (910) 897-6767'Fax CTC Project # 082001 JUL 0 6 2006 DWQ -714/0� Stormwater Project SW8 060509 SUMMERHOUSE ON EVERETT BAY Drainage Area Impervious Surface Summary for Wet Detention Ponds Basin Information Katydid Loop Pond Drainage Area Receiving Stream Name Receiving Stream Class SC Waters Drainage Area 864,230 Existing Impervious Area 0 Proposed Impervious Area total 500,351 % Impervious Area total 57.90% Impervious* Surface Area Katydid Loop Pond Drainage Area On -site Streets & Sidewalks 201,247 Lots 868-896 4,500/lot 40,500 Lots 897-926 3,200/lot 96,000 Lots937-952 4,500/lot 72,000 Pond Surface 90,604 Total s 500,351 Total (ac): 11.49 Basin Information Twining Rose Pond Drainage Area Receiving Stream Name Receiving Stream Class SC Waters Drainage Area 2,102,641 Existing Impervious Area 0 Proposed Impervious Area total) 789,432 % Impervious Area(total) 37.54% Impervious" Surface Area Twining Rose Pond Drainage Area On -site Streets & Sidewalks 179,032 Lots 837-869 3,200/lot 105,600 Lots 870-888 4,500/19t 85,500 Lots 927-937 4,500/lot 49,500 Lots 953-976 4,500/lot 108,000 Lots 977-998 3,200/lot 70,400 Pond Surface 191,400 Total s 789,432 Total (ac): 18.12 RECEIVED MAY 2 3 2006 DWQ Request forAdditional Information Dated May 11, 2006, Item #1 ,�pJ # SGu�OCop50� Summerhouse on Everett Bay, Onslow County, North Carolina KatydidLoop- SA, Vol, & Dewater 0 Wet Detention Pond Sizing Project: Summerhouse on Everett Bay CTC PN#: 82001 POND: KATYDID LOOP Impervious Surface: Impervious Area per Lot Total Lots 888 -896 4,500 40,500 897 -926 3,200 96,000 937 -952 4,500 72,000 208,500 sf 4.79 acres • Roads, Driveways, Sidewalks, Roofs 9.41 acres Water 2,08 11.49 acres 11.49 acres impervious surface divided by 19.84 acres total 58% impervious surface Pond Depth: 6.0 ft From NCDENR Stor ter Best Management Practices: 90% TSS removal forb ep pond: SAfDA = 3.26%V/ 3.26% X 19.84 acres total - 81,122 sf surface area provided. Required Volume: Rv = Volume = 0,05 + 0,57 in/in 1 " rainfall X 0.94 acre-ft 41,139 cu ft 85,803 cu ft provided 0,009 X 0.65 acres 28,174 square feet 58% 0.57 inlin X 0.083333 ftlin X 19.84 acres Depth Check: 41,139 28,174 1.460173 OK P:182 Summerhouse182001 SummerhouselWorkMet Pond Sizing and Dewatering 06 0518.x1s Page 1 of 2 KatydidLoop- SA, Vol, & Dewater 110 Wet Detention Pond Sizing Project: Summerhouse on Everett Bay CTC PN#: 82001 Sizing Dewatering Orifice: is 1) Average Q Required 2-day Drawdown Q(2days) = 41,139 CFI (2days) (24hrslday) (60min/hr) (60sec/min) = 0.238072 cfs 5-day-Drawdown Q(5days) = 41,139 cfI5days) (24hrslday) (60minlhr) (60sec/min) = 0.095229 cfs 2) Orifice size Orifice formula: A = Q/(Cd(29h)-5) Cd = 0.6 h=Hl2 H= 1 g = 32.2 ft/sec2 2-day Drawdown Area = 0.069924 sf = 10.06911 sq in Pipe dia = 3.581465 in 5-day Drawdown Area = 0.02797 sf = 4.027644 sq in Pipe dia = 2.265117 in Use 3.00 in. orifice. P:182 Summerhouse182001 SummerhouseMorkMet Pond Sizing and Dewatering 06 0518.xis Page 2 of 2 11 0 82001 Detention Pond Volume Detention Pond: KATYDID POND Permanent Pool Elevation 17.0 ft Temporary Pool Elevation 18.0 ft Forebay 1 Contour Contour Area (sq.fl) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 11.0 1 8912 0 12.0 9661 9287 9287 13.0 10436 10049 19335 14.0 11236 10836 30171 15.0 12061 11649 41820 16.0 12911 12486 54306 Forebay 2 Contour Contour Area (sq.rl) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 11.0 1431 0 12.0 1782 1607 1607 13.0 2158 1970 3577 14.0 2560 2359 5936 15.0 2985 2773 8708 16.0 3436 3211 11919 Total Forebay Volume: 66,224 Main Pond Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 11.0 19390 0 12.0 21048 20219 20219 13.0 22787 21918 42137 14.0 33090 27939 70075 15.0 36855 34973 105048 16.0 40644 38750 143797 Entire Pond Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum'Volume (cu.ft.) 16.0 1 56991 1 NIA 210021 17.0 1 81122 1 69057 279078 ForebayslEntire Pond: 23.73% Temporary Storage Contour Contour Arco (sg.rt) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 17.0 1 81122 1 1 0 18.0 1 90483 1 85803 1 85803 Page 1 of 1 5/3106 82001 Katydid Pond NC -Holly Ridge 25-Year Duration=5 min, Inten=10.44 in/hr Prepared by C. T. Clayton, Sr., P.E., Inc. Page 1 HydroCAD® 7.10 s/n 003998 © 2005 HydroCAD Software Solutions LLC 5/19/2006 5:35:18 PM Pond 1P: Katydid Pond Inflow Area 19,840 ac, Inflow Depth = 0.67" for 25-Year event Inflow = 133.67 cfs @ 0.00 hrs, Volume= 1.105 of Outflow — 0.16 cfs a@ 0.10 hrs, Volume= 0.876 af, Atten= 100%, Lag= 6.0 min Primary = 0.16 cfs @ 0.10 hrs, Volume= 0.876 of Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.10 hrs Peak Elev= 17.57' @ 0.10 hrs Surf.Area= 86,490 sf Storage= 48,054 cf Plug -Flow detention fime= 4,763.0 min calculated for 0.324 of (29% of inflow) Center -of -Mass det. time= (not calculated: no inflow) Volume Invert _ A_vail.Storage Storage Description #1 17.00' 284,759 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubio-feet) 17.00 81,122 0 0 18.00 90,483 85,803 85,803 19.00 98,953 94,718 180,521 20.00 109,524 104,239 284,759 Device RoutingInvert - - Outlet Devices -- #1 Primary 17.00' 12.0" x 814.0' long Culvert RCP, end -section conforming to fill, Ke= 0.500 Outlet Invert= 14.00' S= 0.0037 'f Cc= 0.900 n= 0.013 #2 Device 1 17.00' 3.0" Vert. Orifice/Grate C= 0.600 #3 Device 1 18.00' 14.00' W x 4.00' H Vert. Orifice/Grate X 4.00 C= 0.600 Primary OutFlow Max=0.16 cfs @ 0.10 hrs HW=17.57' (Free Discharge) L1=Culvert (Passes 0.16 cfs of 0.83 cfs potential flow) t2-OrificeiGrate (Orifice Controls 0.16 cfs @ 3.2 fps) 3=OrifcetGrute ( Controls 0.00 cfs) 0 Stormwater Project SW8 060509 SUMMERHOUSE ON EVERETT BAY Drainage Area Impervious Surface Summary for Wet Detention Ponds Basin Information Spicer Lake Drainage Area Receiving Stream Name Receiving Stream Class SC Waters Drainage Area 6,146,752 Existing Impervious Area 0 Proposed Impervious Area total 3,099,175 % Impervious Area total 50.42% Impervious* Surface Area Spicer Lake Drainage Area On -site Streets & Sidewalks 658,192 Lots 1-37 3,20011ot 118,400 Lots 300-339 3,5001lot 140,000 Lots 340-364 4,000/lot 100,000 Lots 365-397 3,2001Iot 105,600 Lots 398-418 4,000/lot 84,000 Lots 419-505 3,500/tot 304,500 Lots 506-521 4,00011ot 64,000 Lots 522-539 3,20011ot 57,600 Lots 540-547 4,00011ot 32,000 Lots 550-566 4,000/lot 68,000 Lots 567-567 3,5001Iot 3,500 Lots 600-620 3,50011ot 73,500 Lots621-623 4,000/lot 12,000 Lots 977-998 3,20011ot 70,400 Pond Surface 1,207,483 Totals : 3,099,175 Total (ac): 71.15 Basin Information Painted Lady Pond Drainage Area Receiving Stream Name Receiving Stream Class SC Waters Drainage Area 1,149,113 Existing Impervious Area 0 Proposed Im ervious Area total 506,919 %Impervious Area total 44.11% Impervious* Surface Area Painted Lady Pond Drainage Area On -site Streets & Sidewalks 98,881 Lots 37-51 3,200/lot 48,000 Lots 52-76 3,500/lot 87,500 Lots 547-551 4,00011ot 20,000 Lots 568-599 4,00011ot) 128,000 Pond Surface 124,538 Totals 506,919 Total (ac): 11.64 Request for Additional Information Dated May 11, 2006, Item #1 Summerhouse on Everett Bay, Onslow County, North Carolina Paintedl-ady- SA, Vol, & Dewater 10 Wet Detention Pond Sizing Project: Summerhouse on Everett Bay CTC PN#: 82001 POND: PAINTED LADY • e Impervious Surface: Impervious Area per Lot Total Lots 37 -51 3,200 48,000 52 -76 3,500 87,500 547 -551 4,000 20,000 568 -599 4,000 128,000 283,500 sf 6.51 acres Roads, Driveways, Sidewalks, Roofs 8.78 acres Water 2.86 11.64 acres 11.64 acres impervious surface divided by 26.38 acres total 44% impervious surface Pond Depth: 6.0 ft From NCD 6 90% TSS removal for 6.0' deep pond: SAIDA 2.34% 3.26 % 2.34% X 26.38 acres total = Required Volume: Rv = Volume = 124,538 sf surface area provided. 0.05 + 0.45 in/in 1 " rainfall X 0.98 acre-ft 42816 cu ft 128,330 cu ft provided 0.009 2.70% 0.62 acres 26,889 square feet 44% 0.45 inlin X 0.083333 ftlin X 26.38 acres Depth Check: 42,816 + 26,889 1 +592304 OK P:182 Summerhouse182001 SummerhouselWork\Wet Pond Sizing and Dewatering 06 0518.xis Page 1 of 2 PaintedLady- SA, Vol, & Dewater Wet Detention Pond Sizing. Project. Summerhouse on Everett Bay CTC PN#: 82001 Sizing Dewaterino Orifice: 1) Average Q Required 2-day Drawdown Q(2days) = 42816 cf ! (2days) (24hrs/day) (60min/hr) (60sec/min) = 0.247777 cfs 5-day-Drawdown Q(5days) = 42816 cf / (5days) (24hrs/day) (60min/hr) (60sectmin) = - 0.099111 cfs 2) Orifice size Orifice formula: A = Q/(Cd(2gh),5) Cd = 0.6 h=H/2 H= 1 g = 32.2 fVsec2 2-day Drawdown Area = 0.072775 sf = 10.47959 sq in Pipe dia = 3.653737 in 5-day Drawdown Area = 0.02911 sf = 4.191835 sq in Pipe dia = 2.310826 in 7.25 Use 3.00 in. orifice. P:182 Summerhouse182001 SummerhousiaMorkMet Pond Sizing and Dewatering 06 0518.xis Page 2 of 2 82001 Detention Pond Volume Detention Pond : PAINTED LADY • Permanent Pool Elevation 18.0 ft Temporary Pool Elevation 19.0 ft • • Forebay 1 Contour Contour Area (sq.ft) Incr. Volume (cu.ft) S - Accum Volume (cu.ft) 12.0 0 13.0 0 14.0 9313 4657 4657 15.0 10152 9733 14389 16.0 11018 10585 24974 17.0 11909 1 11464 36438 Forebay 2 Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft) 12.0 0 13.0 0 14.0 25643 12822 159 15.0. 27007 26325 26494 16.0 28408 27708 54192 17.0 299" 29I26 1 83318 Total Forebay Volume: 119,755 Main Pond Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 12.0 50792 0 13.0 53084 51938 51938 14.0 55382 54233 106171 15.0 57720 56551 162722 16.0 60085 58903 221625 17.0 62476 b1281 282905 Entire Pond Contour Contour Area (sq.ft) Iner. Volume (cu.ft) S - Accum Volume (cu.ft) 17.0 104229 NIA 402660 18.0 124538 114384 1517044 Forebays/Entire Pond: 23.16% Temporary Storage Contour Contour Area (sq.ft) Incr. Volume (cu.ft.). S - Accum Volume (cu.ft.) 18.0 124538 1 1 0 19.0 132221 1 129380 128380 Page 1 of 1 513106 82001 Painted Lady NC -Holly Ridge 25-Year Duration=5 min, lnten=10.44 in/hr Prepared by C. T_ Clayton, Sr., P.E., Inc. Page 1 HydroCADO 7.10 srn 003998 © 2005 HydroCAD Software Solutions LLC 5/19/2006 5:35.35 PM Pond 1 P: Painted Lady Pond Inflow Area = 26.380 ac, Inflow Depth = 0.56" for 25-Year event Inflow = 149.96 cfs @ 0.00 hrs, Volume= 1.239 of Outflow = 0.07 cfs @ 0.10 hrs, Volume= 0.594 af, Men= 100%, Lag= 6.0 min Primary W 0,07 cfs @ 0.10 hrs, Volume= 0,594 of Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs Peale Elev= 18.43' @ 0.10 hrs Surf.Area= 127,824 sf Storage= 53,963 cf Plug -Flow detention time= 5,184.0 min calculated for 0.284 of (23% of inflow) Center -of -Mass det. time= 3,324.0 min ( 3,325.5 - 1.5 ) Volume Invert Avail.Stora a Stora a Description #1 18.00, 408,440 cf Custom Stage Data (Prismatic) Listed below (Reca(c) Elevation Surt.Area Inc.Store Cum.Store (feet) (sq-ft) _ (cubic -feet) (cubic -feet) 18.00 124,538 0 0 19.00 132,221 128,380 128,380 20.00 140,005 136,113 264,493 21,00 147,889 143,947 408,440 Device_ _ Routing Invert Outlet Devices #1 Primary 18.00' 12.0" x 887.0' long Culvert RCP, end -section conforming to fill, Ke= 0.500 et Invert= 17.10' S= 0.0010 'P Cc= 0.900 n= 0.013 #2 Device 1 18.00' .2" Vert. OrifieelGrate C= 0.600 #3 Device 1 19.00' ' W x 4.00' H Vert. Orifice/Grate X 4.00 C= 0.600 Primary OutFlow Max=0.07 cfs @ 0.10 hrs HW=18.43' (Free Discharge) L1=Culvert (Passes 0.07 cfs of 0.26 cfs potential flow) 1=rifice/Grate (Orifice Controls 0.07 cfs @ 2.8 fps) rifice/Grate ( Controls 0.00 cfs) 0 Stormwater Project SW8 060509 0 0 SUMMERHOUSE ON EVERETT BAY Drainage Area Impervious Surface Summary for Wet Detention Ponds Basin Information Spicer Lake Drainage Area Receiving Stream Name Receiving Stream Class SC Waters Drainage Area 6,146,752 Existing Impervious Area 0 Proposed Impervious Area total 3,099,175 % Impervious Area total 50.42% Impervious* Surface Area Spicer Lake Drainage Area On -site Streets & Sidewalks 658,192 Lots 1-37 3,20011ot 118,400 Lots 300-339 3,50011ot 140,000 Lots 340-364 4,0001lot 100,000 Lots 365-397 3,2001Iot 105,600 Lots 398-418 (4,000/toty 84,000 Lots 419-505 3,50011ot 304,500 Lots 506-521 (4,0001199 64,000 Lots 522-539 3,200/lot 57,600 Lots 540-547 4,000/lot 32,000 Lots 550-566 4,0001Iot 68,000 Lots 567-567 35001Iot 3,500 Lots 600-620 3,50011ot 73,500 Lots621-623 4,000/lot 12,000 Lots 977-998 3,20011ot 70,400 Pond Surface 1,207,483 Totals : 3,099,175 Total (ac): 71.15 Basin Information Painted Lady Pond Drainage Area Receiving Stream Name Receiving Stream Class SC Waters Drainage Area 1,149,113 Existing Impervious Area 0 Proposed Im ervious Area total 506,919 % Impervious Area total 44.11 % Impervious* Surface Area Painted Lady Pond Drainage Area On -site Streets & Sidewalks 98,881 Lots 37-51 3,200/lot 48,000 Lots 52-76 3,500hot 87,500 Lots 547-551 4,00011ot 20,000 Lots 568-599 4,00011ot 128,000 Pond Surface 124,538 Totals : 506,919 Total (ac): 11.64 Request for Additional Information Dated May 11, 2006, Item #1 Summerhouse on Everett Bay, Onslow County, North Carolina • 0 • Spicerl-ake- SA, Vol, & Dewater Wet Detention Pond Sizing Project: Summerhouse on Everett Bay CTC PN#: 82001 POND: SPICER LAKE Impervious Surface: Impervious Area per Lot Total Lots 1 -37 3,200 118,400 300 -339 3,500 140,000 340 -364 4,000 100,000 365 -397 3,200 105,600 398 -418 4,000 84,000 419 -505 3,500 304,500 506 -521 4,000 64,000 522 -539 3,200 57,600 540 -547 4,000 32,000 550 -566 4,000 68,000 567 -567 3,500 3,500 600 -620 3,500 73,500 621 -623 4,000 12,000 977 -998 3,200 70,400 1,233,500 sf 28,32 acres 6 Roads, Driveways, Sidewalks, Roofs 43.31 acres Water 27.72 71.03 3.26% 71.03 acres impervious surface divided by 141.11 acres total 50% Impervious Surface Pond Depth: 6.0 ft From NCDENR Stormwater Best Management Practices: 90% TSS removal for 6.0' deep pond: SA/DA = 2.70% RECEIVED JUN 16 2006 DWQ PROd # 2.70% X 141.11 acres total = 3.81 acres 165,962 square feet 1,202,610 sf surface area provided. P:182 Summerhouse182001 SummerhouselWorklWet Pond Sizing and Dewatering 06 0518.xis Page 1'of 2 0 • e SpicerLake- SA, Vol, & Dewater Wet Detention Pond Sizing Project: Summerhouse on Everett Bay CTC PN#: 82001 Required Volume: Rv = 0.05 + 0.009 X 50% 0.50 in/in Volume 1 " rainfall X 0.50 in/in X 0.08333 Win X 141.1 acres 5.92 acre-ft 257666 cu ft Depth Check: 257,666 1,220,676 cu ft provided + 165,962 1.55256 OK Sizing Dewatering Orifice: 1) Average Q Required 2-day Drawdown Q(2days) = 257666 cf / (2days) (24hrs/day) (60min/hr) (60sec/min) = 1.4911254 cfs 5-day Drawdown 0(5days) = 257666 cf / 5days) (24hrs/day) (60min/hr) (60sec/min) = 0.5964502 cfs 2) Orifice size Orifice formula: A = Q/(Cd(2gh)-5) Cd = 0.6 h=H/2 g = 32.2 ft/sec2 2-day Drawdown Area = 0.5092622 sf = 73.333755 sq in Pipe dia = 9.66534 in 5-day Drawdown Area = 0.2037049 sf = 29.333502 sq in Pipe dia = 6,1128977 in Use 6.25 in. orifice. H = 0.73958 RECEIVED JUN 16 2006 DwQ PROD # '; S LV 'K 0 W P.182 Summerhouse182001 5ummerhouseMorkMet Pond Sizing and Dewatering 06 0518.xis Page 2 of 2 0 El • 82001 Detention Pond Volume Detention Pond: SPICER LAKE Permanent Pool Elevation 17.0 ft Temporary Pool Elevation 18.0 ft Forebay 1 Contour Contour Area (sq.ft) Incr. Volume (cu.ft) S - Accum Volume (cu.ft.) 11.0 9037 0 12.0 9926 0 13.0 10841 10384 10384 14.0 11779 113I0 21694 15.0 12747 12263 33957 16.0 1 13741 1 13244 47201 Forebay 2 Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 11.0 4187 0 12.0 4828 4508 4508 13.0 5497 5163 9670 14.0 6187 5842 15512 15.0 6908 6548 22060 16.0 7654 7291 29341 Forebay 3 Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 11.0 8373 0 12.0 9188 8781 8791 13.0 10029 9609 18389 14.0 10910 10470 28859 15.0 11806 11358 1 40211 16.0 12727 12267 1 52483 Forebay 4 Contour Contour Area (sq.ft) Incr. Volume (cuff.) S- Accum Volume (cu.ft.) 11.0 19764 0 12.0 20881 20323 20323 13.0 22022 21452 41774 14.0 23206 22614 64388 15.0 24404 23805 88193 16.0 25627 25016 113209 Page 1 of 3 5/3/06 RECEIVED JUN 16 2006 DWQ PROJ # 82001 Detention Pond Volume 513106 �J �1 Forebay 5 Contour Contour Area (sq.ft) Incr. Volume (cu.fi.) S - Accum Volume (cu.ft) 11.0 17244 0 12.0 18283 17764 17764 13.0 19352 18318 36581 14.0 20453 19903 56484 15.0 21573 21013 77497 16,Oj 22719 1 22146 1 99643 Forebay 6 Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 11.0 19746 0 12.0 21075 20411 20411 13.0 22428 21752 42162 14.0 23811 23120 65282 15.0 25219 24515 89797 16.0 26653 25936 115733 Forebay 7 Contour Contour Area (sq.ft) Incr. Volume (cu.ft) S - Accum Volume (cu.ft) 11.0 32767 0 12.0 34449 33608 33608 13.0 36154 35302 68910 14.0 37886 37020 105930 15.0 39643 38765 144694 16.0 41426 40535 185229 Forebay 8 Contour Contour Area (sq.ft) incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 11.0 10250 0 12.0 11160 10705 10705 13.0 12087 11624 22329 14.0 13040 12564 34892 15.0 14020 13530 48422 16.0 15026 14523 62945 Forebay 9 Contour Contour Area (sq.ft) Incr. Volume (cu.ft) S - Accum Volume (cu.ft) 11.0 7990 0 12.0 8790 8390 8390 13.0 9618 9204 17594 14.0 10466 10042 27636 15.0 11346 10906 38542 16.0 12252 11799 50341 Total Forebay Volume: 756,122 Page 2 of 3 RECEIVED JUN 16 2006 DWQ PROD # 82001 Detention Pond Volume • u 0 Main Pond Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 8.0 776668 0 9.0 794099 785384 785384 10.0 811569 802834 1588218 11.0 829079 820324 2408542 12.0 846624 837852 3246393 13.0 864203 855414 4101807 14.0 881819 873011 4974818 15.0 899478 .890649 5865466 16.0 952708 926093 6791559 Entire Pond Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 16.0 1130533 NIA 7547681 17.0 1202610 1166572 8714253 Forebays/Entire Pond: 8.68%a Temporary Storage Contour Contour Area (s .ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.fL) 17.0 1202610 0 18.0 1238741 1220676 1220676 Page 3 of 3 RECEIVED JUN 16 20% DWQ PROD # ` 82001 Spicer Lake NC -Holly Ridge 25-Year Duration=5 min, lnten=10.44 Whr Prepared by C. T. Clayton, Sr., P.E., Inc. Page 1 HXdroCADO 7.10 sln 003998 0 2005 HydroCAD Software Solutions LLC _ 5/19/2006 5:35:46 PM Pond 1P: Spicer Lake Inflow Area = 141.110 ac, Inflow Depth = 0.62" for 25-Year event Inflow = 876.42 cfs @ 0.00 hrs, Volume= 7.243 of Outflow — 0.19 cfs @ 0.10 hrs, Volume= 1.515 af, Atten= 100%, Lag = 6.0 min Primary — 0.19 cfs @ 0.10 hrs, Volume= 1,515 of (touting by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.10 hrs Peak Elev= 17.26' @ 0.10 hrs Surf.Area= 1,212,050 sf Storage= 315,452 cf Plug -Flow detention time= (not calculated: initial storage excedes outflow) Center -of -Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage -3,770,642 _Storage _Description #1 ^ 17,00'cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation} Surf.Area Inc.Store Cum.Store -_ (feet} Ssg-ft) c-_pbic-!Set) —(cubic-feet) 17.00 1,202,610 0 0 18.00 1,238,741 1,220,676 1,220,676 19.00 1,274,959 1,256,850 2,477,526 20.00 1,311,273 1,293,116 3,770,642 _Device Routing Invert ert - ry 00' #1 Prima 17. Outlet Devices O .__. 0" x 322-0' long Culvert RCP, end -section conforming to fill, Ke= 0.500 Outlet Invert= 8.00' S= 0.0280 '1' Cc= 0.900 n= 0.013 #2 Device 1 17.00' 6.3" Vert. Orifice/Grate C= 0.600 #3 Device 1 18.00' 14.00' W x 4.00' H Vert. Orifice/Grate X 4.00 C= 0.600 PrimaryOutFtow Max=0.19 cfs @ 0.10 hrs HW=17.26' (Free Discharge) L1=Culvert (Passes 0.19 cfs of 0.42 cfs potential flow) 1:2=OrWce/Grate (Orifice Controls 0.19 cfs @ 1.7 fps) 3,=0rificelGrate ( Controls 0.00 cfs) A RECEIVED JUN 16 2006 DWQ PROJ # Stormwater Project SW8 060509 SUMMERHOUSE ON EVERETT BAY goDrainage Area Impervious Surface Summary for Wet Detention Ponds • �� I Basin Information Katydid Loop Pond Drainage Area Receiving Stream Name Receiving Stream Class SC Waters Drainage Area 864,230 Existing Impervious Area 0 Proposed Impervious Area total 500,351 % Impervious Area total 57.90% Impervious* Surface Area Katydid Loop Pond Drainage Area On -site Streets & Sidewalks 201,247 Lots 888-896 4,5001lot 40,500 Lots 897-926 (3,200/toty 96,000 Lots937-952 4,50011o# 72,000 Pond Surface 90,604 Totals 600,351 Total (ac): 11.49 Basin Information Twining Rose Pond Drainage Area Receiving Stream Name Receiving Stream Class SC Waters Drainage Area 2,102,641 Existing Impervious Area 0 Proposed Impervious Area total 789,432 % Impervious Area total 37.54% Impervious* Surface Area Twining Rose Pond Drainage Area On -site Streets & Sidewalks 179,032 Lots 837-869 3,20011ot 105,600 Lots 870-888 4,50011ot 85,500 Lots 927-937 4,50011ot 49,500 Lots 953-976 4,50011ot 108,000 Lots 977-998 3,20011ot 70,400 Pond Surface 191,400 Total s : 789,432 Total (ac): 18.12 Request for Additional Information Dated May 11, 2006, Item #1 Summerhouse on Everett Bay, Onslow County, North Carolina is TwiningRose- SA, Vol, & Dewater Wet Detention Pond Sizing Project: Summerhouse on Everett Bay CTC PN#: 82001 POND: TWINING ROSE Impervious Surface: Impervious Area per Lot Total Lots 837 -869 3,200 105,600 870 -888 4,500 85,500 927 -937 4,500 49,500 953 -976 4,500 108,000 977 -998 3,200 70,400 419,000 sf 9.62 acres Roads, Driveways, Sidewalks, Roofs 13.73 acres Water 4.4 18.13 acres 18.13 acres impervious surface divided by 48.27 acres total 38% impervious Surface Pond Depth: 6.0 ft From NCDENR Stormwater Best Management Practices: 90% TSS removal for 6.0' deep pond: SAIDA =. 2.00% 2.00% X 48.27 acres total - 191,639 sf surface area provided. Required Volume: Rv = Volume = 0.05 + 0.39 infin 1 " rainfall X 1.56 acre-ft 67992 cu ft 197,291 cu ft provided 0.009 x 0.97 acres 42.053 square feet 38% 0.39 in/in X 0.083333 fthn X 48.27 acres Depth Check: 67,992 + 42,053 = 1.616817 OK P:182 Summerhouse182001 Summerhouse\Work\Wet Pond Sizing and Dewatering 06 0518.x1s Page 1 of 2 TwiningRose- SA, Vol, & Dewater 4D Wet Detention Pond Sizing Project: Summerhouse on Everett Bay CTC PN#: 82001 Sizing Dewatering Orifice: 1) Average Q Required 2-day Drawdown Q(2days) = 67992 cf / (2days) (24hrs/day) (60min/hr) (60seclmin) = 0.393471 cfs 5-day Drawdown Q(5days) = 67992 cf 15days) (24hrslday) (60minlhr) (60seclmin) . = 0.157388 cfs 2) Orifice size Orifice formula: A = QI(Cd(2gh)-s) Cd = 0.6 h = H12 H = 1 g = 32.2 ftlsecz 2-day Drawdown Area = 0.115567 sf - = 16.64162 sq in Pipe dia = 4.604293 in 5-day Drawdown Area = 0.046227 sf 6.656647 sq in Pipe dia = 2.912011 in 11.75 Use 4.00 in. orifice. DI P:182 Summerhouse182001 SummerhouseMorkMet Pond Sizing and Dewatering 06 0518.xis Page 2 of•2 82001 Detention Pond Volume Detention Pond: TWINING ROSE POND ® Permanent Pool Elevation 15.0 ft Temporary Pool Elevation 16.0 It A A Forebay 1 Contour Contour Area (sq.ft) Incr. Volume (cu.ft) S - Accum Volume (cu.ft.) 8.0 0 9.0 0 0 10.0 0 0 11.0 3191 1596 1596 12.0 3849 3520 5116 13.0 4515 4182 9298 14.0 5155 4835 14133 Forebay 2 Contour Contour Area (sq.ft) Incr. Volume (cu.ft) S - Accum Volume (cu.ft.) 8.0 0 9.0 0 0 10.0 0 0 11.0 9300 4650 4650 12.0 10078 9689 14339 13.0 10879 10479 24818 14.0 11708 11294 36111 Forebay 3 Contour Contour Area (sq.ft) Incr. Volume (cu.ft) S - Accum Volume (cu.ft.) 8.0 0 9.0 0 0 10.0 0 0 11.0 32265 16133 16133 12.0 34177 33221 49354 13.0 36111 35144 84498 14.0 38076 37094 121591 Total Forebay Volume: 171,835 Main Pond Contour Contour Area (sq.ft) Incr. Volume (cu.ft) S - Accum Volume (cu.ft) 8.0 76349 0 9.0 80213 78281 78291 10.0 83961 82097 160368 11.0 87995 85978 246346 12.0 91907 89951 336297 13.0 95836 93872 430169 14.0 99956 97896 528065 Page 1 of 2 5/3106 82001 Detention Pond Volume 513106 • s U Entire Pond Contour Contour Area ( .ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 14.0 154895 N!A 699899 16.0 191639 173267 873166 ForebaystEntire Pond: 19.68016 Temporary Storage Contour Contour Area (sq.ft) Incr. Volume (cu.ft.) S - Accum Volume (cu.ft.) 15.0 191639 1 0 16.0 202942 1 197291 1 197291 Page 2 of 2 • 82001 Twining Rose NC -Holly Ridge 2-5-YearDuration=5 min, lnten=10.44 iNhr Prepared by C. T. Clayton Sr. P.E. Inc. Page 1 HydroCADO 7.10 sln 003998 ® 2005 HydroCAD Software Solutions LLC _ _ _ _ ..5/19/2006 5:35:54 PM Pond 1 P. Twining Rose Pond Inflow Area = 48.270 ac, Inflow Depth = 0.52" for 25-Year event Inflow 254.07 cfs @ 0.00 hrs, Volume= 2.100 of Outflow = 0.21 cfs @ 0.10 hrs, Volume= 1.323 af, Atten= 100%, Lag= 6.0 min Primary - 0.21 cfs @ 0.10 hrs, Volume= 1.323 of Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.10 hrs Peak Elev= 15.47' @ 0.10 hrs Surf.Area= 196,955 sf Storage= 91,386 cf Plug -Flow detention time= 5,902.8 min calculated for 0.274 of (13% of inflow) Center -of -Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage__ Storage Description #1 15.00' 626,035 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (eet) _ -� (sgft) ___ -(cubic-feet) (cubic -feet) 15.00 191,639 0 0 16.00 202,942 197,291 197,291 17.00 214,347 208,645 405,935 18.00 225,852 220,100 626,035 Device Routing Invert Outlet Devices #1 Primary 15.00' 12.V x 538.0' long Culvert RCP, end -section conforming to fill, Ke= 0,500 Outlet Invert= 13.65' S= 0.0025'P Cc-- 0.900 n= 0.013 #2 Device 1 15.00' 3.8" Vert Orifice/Grate C= 0.600 #3 Device 1 16.00' 14,00' W x 4.00' H Vert. Orifice/Grate X 4.00 C= 0.600 Primary OutFlow Max=0.21 cfs @ 0.10 hrs HW=15.47' (Free Discharge) t1=Culvert (Passes 0.21 cfs of 0.48 cfs potential flow) t2=06fcelGrate (Orifice Controls 0.21 cfs @ 2.7 fps) 3=0rlficelGrate ( Controls 0.00 cfs) 0 WET DETENTION POND ANALYSIS FILE NAME: PROJECT #: SW8 060509.jun06 PROJECT NAME: Summerhouse on Everett Bay Receiving Stream: Classification: Index Number: Onsite DA, sf= Off site DA, sf = Total Drainage Area Built -Upon Area Buildings/Lots, sf= Streets/SW, sf= Pond water surface, sf= Other, sf= Offsite, sf= Total Built -upon Area: Surface Area % impervious Avg. Design Depth, ft: TSS (85% or 90%): SA/DA ratio Req. Min. Surf. Area Volume Calculations Design Storm, inches: Rational Cc= Rational Volume, cf: Rv = Min. Req. Volume= Bottom Elevation= Permanent Pool Elev= Perm Pool Area= Design Pool Elevation= Design Pool Area= Total Volume Prov. _ Forebay Volume Permanent Pool Vol.= Req. Forebay Volume= Prov. Forebay Volume= Percent= (22>%>18) Katydid King Crk. Rost. Area SC Sys+ HOW CPF24 18-87-4 864230,00 0.00 864230.00 208500.00 201247.00 90604.00 500351.00 57.90% 6.00 90 3.25% 28111 1 0.64 46197 0.571 41127 11.00 17.00 81122.00 18.00 90483.00 85802.50 279078.00 55815.6 66224.00 24% Painted Ladv King Crk. Rest. Area SC Sw HQW CPF24 18-87-4 1149113.00 0.00 1149113.00 283500.00 98881.00 124538.00 506919.00 44.11 % 6.00 90 2.35% 26968 1 0.54 51543 0.447 42807 12.00 18.00 124538.00 19.00 132221.00 128379.50 517044.00 103408.8 119755 23% Spicer Lake King Crk. Rest. Area SC Sw HQW CPF24 18-87-4 6146752.00 0.00 6146752.00 1233500.00 658192.00 1207483.00 3099175.00 50.42% 6.00 90 2.73% 167768 1 0.58 299228 0.504 258050 11.00 17.00 1202610.00 18.00 1238741.00 1220675.50 8714253.00 1742850.6 756122 9% S:IWQSIPOND1060509.jun06.WK1 REVIEWER: L. Lewis Original Run Date: June 2, 2006 Last Modified: 05-Jul-06 Twininq Rose King Crk. Rest. Area SC Sw HOW CPF24 18-87-4 2102641.00 0.00 2102641.00 0.00 0.00 419000.00 179032.00 191400.00 789432.00 1 0.00 1 0.00 37.54% #DIV/01 #DIV/01 6.00 90 1.98% #DIV/O! #DIV/O! 41574 #DIV101 #DIV101 1 0.49 #DIV/01 #DIV/O! 85431 #DIV/0! #DIV/O! 0.388 #DIV/O! #DIV/0! 67968 #DIV101 #DIV101 8.00 15.00 191639.00 16.00 202942.00 197290.50 0.00 0.00 873166.00 174633.2 0 0 171835,00 20% #DIV/O! #DIV/O! Katydid Drawdown Orifice[Weir Avg. Head, ft = 0.44 Average Flow Q2, cfs 0.238 Average Flow Q5, cfs 0.095 Q2 Area, sq. in. = 10.78 Q5 Area, sq. in. = 4.30 No. of Orifices 1 Orifice Diameter, in.= 3 Orifice Area, sq. in. = 7.069 Weir Height, inches= Weir Length, inches= Weir C = 8.650 Weir L', eff. length= -0.088 Avg. Flowrate, Q, cfs = 0.156 Drawdown, days = 3.0 Painted Lady Spicer Lake Twining Rose 0.44 0.37 0.42 0.248 1.493 0.393 0.099 0.597 0.157 11,20 73.44 18.22 4,48 29.38 7.29 1 1 1 3 6.25 4 7.069 30.680 12.566 0.00 0.00 #DIV/01 #DIVfO! #DIV/O! #DIV/0! #DIVrO! #DIV/O! #DIV/01 #D;V10! 0.000 0.000 10.727 8.689 11.699 #DIV/O! #DIV/O! -0.088 -0.074 -0.083 0.000 0.000 0.156 0.624 0.271 0.000 0.000 3.2 4.8 2.9 #DIV/01 MV101 FW: Summerhouse on Everett Bay SW8 060509 1 M Subject: FW: Summerhouse on Everett Bay SW8 060509 From: "Carl Huddle"<chuddle@traderconstruction.com> Date: Thu, 6 Jul 2006 09:36:47 -0400 To: <linda.lewis@ncmaiLnet> CC: "Inc. R. A. Management" <ramanagement@alltel.net>, <davidluddy@carolina.rr.com> Dear Linda: Please find attached the information you requested. Please note the table in Drawing D3 has a note specifying an 8 inch diameter steel pipe orifice for Spicer Lake. We have attached drawing D-3 and the sealed calculation cover sheet. We will be sending the hard copies out today via Fed -Ex and you should receive tomorrow. Please let me know if you have questions, or require additional information. Thanks, Carl -----Original Message ----- From: C. Tyrus Clayton, Jr., PE [mailto:tyrus@ctclayton.comI Sent: Thursday, July 06, 2006 8:50 AM To: Carl Huddle Cc: jean®ctclayton.com Subject: RE: Summerhouse on Everett Bay SW8 060509 Carl, Attached is the latest Detail sheet we emailed back in mid -June. The text leader for the decant orifice structure references a note below the table that specifies that the decant orifice steel pipe be 8-inch diameter for Spicer lake. In addition the mounting plate size was increased to account for the 8-inch pipe. Assuming this detail was incorporated, I believe Ms. Lewis missed this reference. Also attached is scanned sealed cover page. I will bring a hard copy of the new calculation cover page (sealed) with me today. Call if we need to discuss. C. Tyrus Clayton, Jr., PE Vice President C. T. Clayton, Sr., PE, Inc. 3100 NC 27 East Coats, NC 27521 910-897-7070 910-897-6767 fax 919-795-6302 mobile/vmail This email message and any attachments thereto is intended only for the use of the individual or entity to which it is addressed and may contain I of 3 7/6/2006 9A9 AM FW: Summerhouse on Everett Bay SW8 060509 information that is privileged, confidential, and exempt from disclosure under applicable law. If the recipient or reader of this message is not the intended recipient, you are herby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this email communication in error, please notify us immediately by sending a reply email message to the sender. Please delete the original message from your system. Thank You. -----Original Message ----- From: Carl Huddle[mailto:chuddle(i�traderconstruction.com] Sent: Thursday, July 06, 2006 7:40 AM To: tyrus Cc: Lonnie Dow; jean@ctclayton.com Subject: FW: Summerhouse on Everett Bay SW8 060509 Tyrus: Please respond to Linda's request. We can revise the Structure detail on D-3 per your recommendations. You will need to seal the pond calculations. Thanks Carl -----Original Message ----- From: Linda Lewis [mailto:linda.lewis@ncmail.net] Sent: Wednesday, July 05, 2006 12:11 PM To: Carl Huddle Cc: Randy Allen Subject: Summerhouse on Everett Bay SW8 060509 Mr. Huddle: The Division received previously requested information regarding the subject project on June 16, 2006. Please address the following items in order to continue the review and issue the permit: 1. Please provide a revised, sealed pond calculation cover sheet. The orifice diameter for the Spicer Lake pond was recalculated to 6.2511, which requires that the revised calculations be sealed. 2. The outlet structure detail on sheet D-3 indicates that the drawdown setup consists of a 4" diameter steel pipe at a 45 degree angle leading into to the wall of the structure at which point, a PVC pipe of the specified diameter and at the specified elevation will be placed through the wall. If the Spicer Lake pond has an orifice diameter of 6.2511, the 4" steel pipe will be the limiting factor for drawdown, not the 6.25" pipe. The 4" steel pipe leading into the outlet structure should be specified to be of a large enough diameter sufficient to cover the 6.25" orifice diameter. Please submit 2 copies of the revised detail sheet D-3 and a copy of the sealed calculation cover sheet prior to July 19, 2006. 2 of 3 7/6/2006 9:49 AM Summerhouse on Everett Bay SW8 060509 Subject: Summerhouse on Everett Bay SW8 060509 From: Linda Lewis <linda.lewis@ncmail.net> Date: Wed, 05 Jul 2006 12:11:08 -0400 To: Carl Huddle<chuddle@traderconstruction.com> CC: Randy Allen <ramanagement@alltel.net> Mr. Huddle: The Division received previously requested information regarding the subject project on June 16, 2006. Please address the following items in order to continue the review and issue the permit: I. Please provide a revised, sealed pond calculation cover sheet. The orifice diameter for the Spicer Lake pond was recalculated to 6.2511, which requires that the revised calculations be sealed. 2. The outlet structure detail on sheet D-3 indicates that the drawdown setup consists of a 4" diameter steel pipe at a 45 degree angle leading into to the wall of the structure at which point, a PVC pipe of the specified diameter and at the specified elevation will be placed through the wall. If the Spicer Lake pond has an orifice diameter of 6.2511, the 4" steel pipe will be the limiting factor for drawdown, not the 6.25" pipe. The 4" steel pipe leading into the outlet structure should be specified to be of a large enough diameter sufficient to cover the 6.25" orifice diameter. Please submit 2 copies of the revised detail sheet D-3 and a copy of the sealed calculation cover sheet prior to July 19, 2006. Thanks, Linda 1 of 1 7/5/2006 3:06 PM CAROLINA ENGINEERS, PA Geotechnicai • Construction Materials • Forensic • Site Development • Surveying_ �C, !H;D Ju 6 zoos June 16, 2006 North Carolina Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Attention: Mrs. Linda Lewis Reference: Stormwater Project SW8 060509 Request for Additional Information Dated June 5, 2006 Summerhouse on Everett Bay, Onslow County, North Carolina Dear Mrs. Lewis: On June 13, 2006 we received your request for additional information pertaining to the above referenced stormwater management project and appreciate your timely response. Please find the following updated information as requested: 1. The tables in form SWU-101 have been reformatted to reflect the updated compilation of data. There are now five (5) tables in form SWU-101, Section 111.6. Four (4) tables represent the drainage ponds and one (1) table represents the project's overall drainage area. 2. All curbed and guttered streets will drain into one of the four (4) ponds. 3. The orifice size for Spicer Lake has been changed to 6.25" diameter. I hope these responses have answered your questions. Two (2) complete sets of plans, application forms and supporting data are enclosed. If you have any questions please call me at (252) 633-2424, Sincerely, CAROLINA ENGINEERS, P.A. CARL C. HUDDLE, P.E. Project Engineer cc: Cameron Weaver Randy Allen Attachments: Plans (2) Binders (2) PO Box 1595, New Bern, NC 28563, Tele: (252) 633-2425, Fax: (252) 633-1370, www.carolinaengineers.com F/ / Michael F. Easley Governor William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan W, Klimek, P,E., Director Division of Water Quality September 24, 2003 To: Alan Klimek From: Todd St. John Re: Fountains in Stormwater Extended Wet Detention Ponds After doing some research and consulting with Bill Hunt of NCSU, I am ready to make the following recommendation in regards to allowing the use of decorative fountains in stormwater ponds. I am basing my recommendations on the fact that certain benefits may be realized by the addition of such devices. First, surface disturbance of the pond can increase dissolved oxygen levels in the pond and enhance biological activity that can be beneficial in removing some pollutants of concern. Second, gentle mixing of the water column may aid in flocculation of certain pollutants as well as allow for contact with the anoxic zone of the pond's bottom encouraging de -nitrification. Third, disturbing the surface of the pond can discourage mosquito breeding. After researching different products designed for use in ponds, I discovered a variety of aeration and fountain type systems. I do not recommend the use of the aeration systems that work like fish tank bubble stone as they would create too much disturbance. I do recommend surface fountains that draw water from less than 2 feet. Some of the surface fountains simply float on top of the water and have the intake, pump and fountain nozzle all in one unit. These clearly draw water at the surface. Others make use of a separated nozzle, pump, and/or intake connected by tubing. If these are to be used they must draw their water from the surface in the deepest part of the pond. Also, I recommend that the falling water from the fountain be centered in the pond and away from the shore line. In regards to sizing the pump, it seemed appropriate to compare the energy input to the pond volume using a velocity gradient that would encourage flocculation in water treatment applications. The assumption is that if small enough amount of energy input was used that re -suspension would not be an issue. Further, if the amount of energy added by the fountain was comparable to that needed to encourage flocculation of fecal coliform, for instance, then it may even prove to be a benefit. As a final check, I also determined the detention time based on pumping rates to further show that too much mixing would not occur. The shortest detention times were in the order of two days. Based on the above, here is the proposed schedule of maximum pump power (hp) vs. minimum pond volume (cubic feet). Proposed Schedule of Maximum Allowable Fountain Pump Power (hp) vs Minimum Permanent Pool Pond Volume Max Pump Minimum HP Pond Volume (ft3) 3 675000 2 450000 1 250000 3/4 175000 1/2 125000 1 /3 80000 1 /4 60000 1 /6 40000 1/8 30000 North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location) 919-733-1786 (phone), 919-733-6893 (fax), http://h2o,enr.state.nc.us/ncwetlancis/ �.0 W zLU UJ x� F- w Ov F- 3 O at'? A • • h 6.,t A im I•�i I o lira � ,\ 1l lip p� O t ¢• � b� i Co � LD lii � b C � � CO { � •l� \� � T p 4 l r I A• ► " • ms�"� U U a "1 \ -;) c \4\ Cf) 4� % 4 { d . - "'�'N s3a - `• Lam• m VVV Oil LO uj CL 6 .:�,�1`1VL2._Zl��__L(.f�l\� 1 O LRcF,1,-D JUN 1 6 Z006 LOW DENSITY STORMWATER MANAGEMENT PLAN (Revised) FOR SUMMERHOUSE ON EVERETT BAY ONSLOW COUNTY, NC ON BEHALF OF: R.A. NORTH DEVELOPMENT I, INC. 110 MATTHEWS STATION STREET, SUITE 2D MATTHEWS, NC 28105 TELEPHONE: (704) 321-0401 SUBMITTED BY: CAROLI NA ENGINL-E,RS. PA I CAROLINA ENGINEERS, PA P.Q. BOX 1595 2500 HIGHWAY 70 EAST NEW BERN, NC 28563 TELEPHONE: (252) 633-2425 FACSIMILE: (252) 633-1370 •.' 'j\ i�a� � -- tp.` � II I Z �, � ',41t � 1 rl .� \ -` n; sI-, . . �--"� .,` +u ' _o'. �' •:� `�cD, -I`. � �, 11 tI1 t.•'-+— `I', f a r+',I, iI `�1'i.�r }{2�� Gr ~ � a - •? � ram+ II ,� ,. iil,..I., '.I,- `.I,-� I �J_ � 0. W O.-7, 'k O RF cn O OLu LLL 63, CL Uj UN tr I = } rl CV x � �1�—•--I __ "�'rr , _ _ ',I, .�_ gat- I i .! " _��_. SUMMERHOUSE AT EVERETT BAY Stormwater Management Detailed Summary PART 1. DESCRIPTION OF THE PROJECT RA Management proposes to develop the 515 acres of land to be called Summerhouse at Everett Bay in Onslow County, near Holly Ridge, North Carolina, (site map included). The property is adjacent to the Atlantic Intracoastal Waterway and near Spicer Bay and contains 86 acres of wetlands. RA Management proposes the development of a single- family residential project. The proposed Project will be one of the largest developments in the area. The Project is proposed to provide a world class residential property not currently prevalent in the Holly Ridge area. The quality of the Project is designed to attract the regional consumer to live in Holly Ridge. The proposed Project is planned to be constructed over approximately a 10-year period. Construction of the 1,033 single-family residential lots and related infrastructure, are essential elements to be designed and permitted. The specific goals of the development are to create a high quality residential real estate project that significantly enhances the market value of the property; create a high quality alternative in the Town of Holly Ridge create a project that is consistent with the RA Management high quality project offering amenities, services, and products in an environmentally sensitive and well -planned manner. The project will include providing for a treatment plan to handle and treat all wastewater derived from the 1,033 lots of the single-family development. Two on -site ponds will be used for waste water infiltration. The plant and associated discharges are being designed and permitted by Mckim and Creed Engineering. The land disturbance, storm water handling, best management practices and water access are being permitted by Trader Construction. The project will include day dock slips, reasonable water access through small boat ramp construction and observation piers for wetland and water viewing access and enjoyment for the lot owners of the subdivision. The observation piers will not provide dockage in the open water areas and in the wetland is a raised fixed walkway on piles outside of the CAMA line. PART 2. NATURAL RESOURCES AND LAND DEVELOPMENT The siting of the Project is critical to its success. The proximity and connection to the Wilmington area are unique factors for the proposed site. The proximity of the Atlantic Intracoastal Waterway is also an important factor for siting the Project as proposed. The requirement for this project to be economically viable can be achieved primarily through the single-family lots planned for the Project. The natural resources of the Form S WU-101, Section 1II, No. I . Project site have been carefully used in planning for this primary and driving use for the success of the proposed Project. The single-family plan has been designed to incorporate and enhance the natural resources of the site. As described in this analysis, the sensitive natural resources were avoided at every possible step of the planning process to maximize the experience of the end user and visitor to the Project site. The location of this site, its natural resource amenities, and the available acreage all support the development of the Project at this site. No other sites were found in the area where such a project could be successfully contemplated. In light of the overall project purposes, this is the only site available and capable of serving the purposes of the proposed Project when taking into consideration costs, logistics, and existing methods for development. The Project as planned avoids impacts on natural resources completely. Avoidance of impacts on wetlands was also a central effort in the many considerations of land planning. The roads, utility corridors, and other developmental aspects of the proposed project were all planned after the wetlands were thoroughly investigated. The project includes bridges which are a substantial economic commitment to avoiding impacts to the 86 acres of wetland on -site. All environmental and regulatory requirements will been met or exceeded in the development of the proposed Project. Storm water handling will be handled by completing plans and design which carefully follow state and federal guidelines. The projects planned storm water handling methods provide substantial flexibility. The project is consistent with "low density" guidelines for land development but because of the substantial amount of ponds included in project plans, "wet detention" can be provided which likely will exceed typical pre -development hydraulic residence time requirements. Other best management practices such as those below will also be incorporated into plans for the high density pockets planned for the site. Submittals for these high density pockets will be presented as a modification at a later date. STORM WATER BEST MANAGEMENT PRACTICES (BMP) 1. Plans will provide for disconnected impervious areas where possible and reasonable. Roof downspouts will be disconnected from streets and culverts and runoff diverted over vegetated areas or infiltration systems (for treatment). 2. Also, roadway runoff can be converted to sheet flow and directed to wet detention and / or other best management practices. 3. Storm water controls will be designed to replicate and maintain the hydrographic condition at the site prior to the change in landscape and at a minimum include provisions that satisfy minimum standards. In most cases the post -development condition outfall rate and volume will be less than the pre -development condition and therefore exceed requirements. 4. Grassed road side ditches will be used in place of curb and gutter. Check dams, level spreaders, and other similar best management practices shall be used to minimize the effect of storm water runoff outfalling from the project tract. In areas where slopes exceed 5%, storm water collected in piped conveyance Form S WU-141, Section III, No. 1 . systems shall be directed away from surface waters and best management practices shall be employed at both the intake and the outlet areas. Curbs and gutters may be used in combination with sidewalks in areas to separate the pedestrian portion of a street-scape from the automobile portion and will encourage greater pedestrian mobility within the development. 5. No direct discharges of storm water to streams are planned for this development. Effective energy dissipation at the pipe outlet shall be accomplished to prevent scour of the area of any outfall. Stream, wetland and other aquatic area habitat integrity will be maintained by ensuring that storm water runoff is dispersed through a check dam, vegetated or grassed buffer zone prior or other BMP prior to outfalling from the final BMP in the "treatment train". 6. In addition, the use of trees —particularly evergreen species —can be used as an effective component of an integrated storm water management plan in an effort to reduce the amount of surface water runoff through site storm water interception, transpiration, and other processes. 7. The groundwater table will be maintained through many mechanisms to include distributing the infiltration basin groundwater to areas throughout the site. Storm water ponds will be maintained with greater than minimum detention and normal pool to aid in naturalizing ground water tables. 8. Strict attention will be provided to erosion and sedimentation control and implemented for all construction. The development of these requirements shall be fully coordinated with the Land Quality Section. • e Form SWU-101, Section III, No. 1 A r�gQG � r June 5, 2006 Mr. Randy Allen, President R.A. North Management 1, Inc. 110 Matthews Station Street, Suite 2D Matthews, NC 28105 Subject: Request for Additional Information Stormwater Project No. SW8 060509 Summerhouse on Everett Bay Onslow County Dear Mr. Allen: Michael F. Easley, Governor William G. Russ Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality The Wilmington Regional Office received previously requested information regarding the pending Stormwater Management Permit Application for Summerhouse on Everett Bay on May 23, 2006. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the storcrmwater review: 1. There has been a misunderstanding regarding the columns on the application and their purpose. Each column represents one of the proposed treatment systems. Since there are 4 ponds, and one overall project, there will be 5 columns completed on the application, one for the drainage area of each proposed pond and one for the overall project. 2. Please label each column in Section 111.6 of the application to match up to one of the proposed ponds. 3. For all applications, resubmittals, modifications, and plan revisions, a minimum of 2 sets of plans is required. 4. During our pre -application meeting, I asked if there were any curbed and guttered streets that did not drain into one of the 4 wet detention ponds, and the response was no. If that has changed as a result of these revisions, please provide a 100' swale, swale calculations, a swale drainage area map and a completed curb outlet supplement. 5. The orifice size for Spicer Lake is too small. When you run a check of the 6" 0 orifice under the actual average head of 0.375' (as measured to the centerline of the orifice), the resulting flowrate is too low to meet the maximum 5 day drawdown time. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to June 19, 2006, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. None Carolina Naturally North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Internet: www.newaterquality.org Fax (910) 350-2004 1-87-7-623-6748 An Equal Opporlunity/Affirmailve Action Employer — 50% Recyciedl10% Post Consumer Paper Mr. Allen June 5, 2006 Stormwater Application No. SW8 060509 The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 796-7404. Sincerely, Linda Lewis Environmental Engineer ENBlarl: S:1WQSlSTORMWATERIADDINFO120061060509.jun06 cc: Carl Huddle, P.E., Carolina Engineers Doug Huggett, DCM Linda Lewis Page 2 of 2 r N i.. 'WET DETENTION POND ANALYSIS FILE NAME: PROJECT #: SW8 060509.junO6 PROJECT NAME: Summerhouse on Everett Bay Katydid Painted Lady Spicer Lake Receiving Stream: Everett Bay Everett Bay Everett Bay Classification: SC SC Sc Index Number: Onsite DA, sf= 864230.00 1149113.00 6146752.00 Offsite DA, sf = 0.00 0.00 0.00 Total Drainage Area: 864230.00 1149113.00 6146752.00 Built -Upon Area Buildings/Lots, sf= Streets/SW, sf= Pond water surface, sf= Other, sf= Offsite, sf= Total Built -upon Area: Surface Area % impervious Avg. Design Depth, ft: TSS (85% or 90%): SA/DA ratio Req. Min. Surf. Area Volume Calculations Design Storm, inches: Rational Cc= Rational Volume, cf: Rv = Min. Req. Volume= Bottom Elevation= Permanent Pool Elev= Perm Pool Area= Design Pool Elevation= Design Pool Area= Total Volume Prov. _ Forebay Volume Permanent Pool Val.= Req, Forebay Volume= Prov. Forebay Volume= Percent= (22>%>18) 208500.00 201247.00 90604.00 500351.00 57.90% 6.00 90 3.25% 28111 1 0.64 46197 0.571 41127 11.00 17.00 81122.00 18.00 90483.00 85802.50 279078.00 . 55815.6 66224.00 24% 283500.00 98881.00 124538.00 506919.00 44.11 % 6.00 90 2.35% 26968 1 0.54 51543 0.447 42807 12.00 18.00 124538.00 19.00 132221.00 128379.50 517044.00 103408.8 119755 23% 1233500.00 658192.00 1207483.00 3099175.00 50.42% 6.00 90 2.73% 167768 1 0.58 299228 0.504 258050 11.00 17.00 1202610.00 18.00 1238741.00 1220675.50 8714253.00 1742850.6 756122 9% S:IWQSIPOND1060509. jun06.WK1 REVIEWER: Original Run Date: Last Modified: 02-Jun-06 Twining Rose Everett Bay Sc 2102641.00 0.00 2102641.00 0.00 419000.00 179032.00 191400.00 789432.00 1 0.00 37.54% 6.00 90 1.98% 41574 1 0.49 85431 0.388 67968 8.00 15.00 191639.00 16.00 202942.00 197290.50 873166.00 174633.2 171835.00 20% on ie 0.00 #DIV/O! I #DIV/01 #DIV/O! #DIVI01 #DIV/O! #DIV/O! #DIV/O! #DIV101 #DIV/O! #DIV101 #DIV/O! #DIV/O! #DIV/O! #DIV101 0.00 0.00 0 0 #DIV/O! #DIV/01 Katydid Drawdown OrificeMeir Avg. Head, ft = 0.44 Average Flow Q2, cfs 0.238 Average Flow Q5, cfs 0.095 Q2 Area, sq. in, = 10.76 Q5 Area, sq. in. = 4.30 No. of Orifices 1 Orifice Diameter, in.= 3 Orifice Area, sq. in. = 7.069 Weir Height, inches= Weir Length, inches= Weir C = 8.650 Weir L', eff. length= -0,088 Avg. Flowrate, Q, cfs = 0.156 Drawdown, days = 3,0 Painted Lady Spicer Lake Twining Rose 0.44 0.38 0,42 0.248 1.493 0.393 0.099 0.597 0.157 11.20 72.93 18.22 4.48 29,17 7.29 1 1 1 3 6 4 7.069 28.274 12.566 0.00 0.00 #DIV/01 #DIV/O! #DIVIO! #DIV101 #DIV/O! #DIV/01 #DIV/01 #DIV/O! 0,000 0.000 10.727 8.766 11.699 #DIVIO! #DIV/O! -0.088 -0.075 -0.083 0.000 0.000 0.156 0.579 0.271 0,000 0.000 3.2 5.2 2.9 #DIVIOI #DIVIO! ul OLINA @1:R5. PA May 19, 2006 CAROLINA ENGINEERS, PA Geotechnical • Construction Materials • Forensic • Site Development • Surveying MAY 2 3 '�"b North Carolina Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Attention: Mrs. Linda Lewis Reference: Stormwater Project SW8 060509 Request for Additional Information Dated May 11, 2006 Summerhouse on Everett Bay Onslow County, North Carolina Dear Mrs. Lewis: We received your request for additional information dated May 11, 2006, and appreciate your timely correspondence. With regard to the additional information required for your review please find the following items documented in the updated binder and drawings: 1. The surface area and required volume sizing calculations for the Katydid Pond is attached. (See Katydid Pond Tab) 2. The columns on the application apply to the total site drainage areas used in calculating the percent impervious as it relates to the low density requirements. The application has eight (8) columns, seven (7) are drainage areas and one (1) is the total site or sum of all seven. The supplements contain drainage areas which apply to stormwater draining into the ponds. We have attached a drawing showing the delineated drainage areas for each pond and data from each drainage area to show you how the run off volumes were calculated. (See Section SWU-102, Summerhouse on Everett Bay Drainage Area Impervious Surface Summary for Wet Detention Ponds) 3. The vegetation is specified in the planting notes on the typical pond section on Sheet S-4. Weeping Love Grass will not be used as temporary or permanent ground cover. 4. The drainage areas listed in the application is for the entire tract of land. Drainage areas for the ponds include only stormwater draining into the ponds. (See Sheet G-1 I for the delineation) 5. The outlet structure symbols and inverts have been added. (See Sheets) PO Box 1595, New Bern, NC 28563, Tele: (252) 633-2425, Fax: (252) 633-1370, www.carolinaengineers.com 6. The line 100 feet inside the 404 wetland delineated line has been named "100 feet inside 404 wetlands." 7. "Estuary Grouping" was a label initially placed on the master plan by the land planners. We have removed the "Estuary Grouping" label. S. We have condensed the BUA per lot listing as recommended. Please find the attached listing in Section SWU-104. 9. We have identified the curbed section streets and shoulder and ditch section street on the plans. (See Sheet D-1) 10. We have identified and labeled all drainage easements and showed the locations on the plans. 11. We have specified an orifice diameter of 4.0" for Twining Rose Pond. 12. The drawings have been sealed. 13. We have added a revised vicinity map showing at least two major roads. Also find enclosed a check for $4,000.00. As suggested by Cameron Weaver, we are sending this check to take the place of the previous $4,500.00 check submitted. Cameron can destroy the $4,500.00 check. I hope this documentation has answered your questions. If additional information is needed or you have any questions, please call. Sincerely, CAROLINA ENGINEERS, P.A. (�� ZI/ Z,/, �-� CARL C. HUDDLE, P.E. Project Engineer cc: Cameron Weaver Randy Allen Attachments: 1- Binder 1- Set of Drawings 1- Check PO Box 1595, New Bern, NC 28563, Tele: (252) 633-2425, Fax: (252) 633-1370, www.carolinaengineers.com VE Aijivs a .—ono P. 1 Cp11MUNICATION RESULT REPORT ( MAY.11.2006 10'11AM .X }TTI NCDENR WIRO :� ~ PAGE RESULT _ _ —ADDRESS (GROUP) ----- ------ FILE MODE OPTION ------- ----------------------------- ----OK P. 4/4 ------------------------------------- 912526331370 E.07 MEMORY TX REASON FOR ERROR E-1) HANANSWERR LINE FAIL 101 a y E-27 BUSY E-47 NO FACSIMILE CONNECTION �— Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Nanmral Resources Alan W. Klimek. P.B. Director Division of Water Quality PAX COVER SHEET Date: May I1, 2006 No. of Pages: 4 Incl. this one To: Carl Huddle, P.E. From: Linda Lewis Company: Carolina Engineers Water Quality Section - Stormwater FAX 9: 252-633-1370 FAX # 910.350.2004 Phone # 910-796.7215 DWQ Stormwater Project Number: SW8 060609 Project Name: Summerhouse on Everett Say MESSAGE: Mr. Huddle: Attached are the Express Review comments for this project. You will receive a copy of the letter and all original documents that need to be revised via USPS. Michael F. Easley, Governor .. o��F wAr�9Q� William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources FAX COVER SHEET Alan W. Klimek, P.E. Director Division of Water Quality Date: May 11, 2006 No. of Pages: 4 incl. this one To: Carl Huddle, P.E. From: Linda Lewis Company: Carolina Engineers Water Quality Section - Stormwater FAX #: 252-633-1370 FAX # 910-350-2004 Phone # 910-796-7215 DWQ Stormwater Project Number: SW8 060509 Project Name: Summerhouse on Everett Bay MESSAGE: Mr. Huddle: UR Attached are the Express Review comments for this project. You will receive a copy of the letter and all original documents that need to be revised via USPS. ENBlarl: S:IWQSISTORMWATERIADDINFO\20061060509.may06 NVo(` Carolina Niund!l North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Internet: www.ncwater ualit .or Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer - 50% Recycled110% Post Consumer Paper . aZ°� W A r�9pG o -c May 11, 2006 Mr. Randy Allen, President R.A. North Management I, Inc. 110 Matthews Station Street, Suite 2D Matthews, NC 28105 Subject: Request for Additional Information Stormwater Project No. SW8 060509 Summerhouse on Everett Bay Onslow County Dear Mr. Allen: Michael F. Easley, Governof William G. Ross Jr., Secretary North Carolina Department of Fnvironment and Natural Resources Alan W. Klimek, P.E. DiTCCtAr Division o! Water Quality The Wilmington Regional Office received a Stormwater Management Permit Application for Summershouse on Everett Bay on May 9, 2006, with a scheduled Express review date of May 10, 2006. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: 1. Please provide surface area and required volume sizing calculations for the Katydid Pond. 2. Please label the columns on the application to match up to the proposed ponds. The: application lists only a drainage area number, but the supplements contain very colorful names of the ponds. I'm having difficulty matching them up. 3. Please specify the type of vegetation to be planted on the side slopes of the pond or swale and specify the type of wetland species to be planted on the 6:1 shelf. Please note that Weeping Love Grass is not recommended for use in North Carolina as either a temporary or permanent ground cover. 4. Please check the application to make sure that the drainage areas and impervious areas used in the calculations for each pond match up to what is listed in Section 111,6 of the application, and on the supplements. Examples of problem areas include: the drainage area used in the HydroCAD calculations for the Katydid Pond is 13.63 acres (593,723 ft2) however none of the columns on the application list this amount as a drainage area; the supplement for Spicer Lake indicates that the drainage area is 109.17 acres (4,755,445 ft2) however, none of the drainage area columns on the application uses this number. 5. Several of the outlet structure locations for the ponds are labeled, but no symbol for the structure or outlet piping is shown. Please add the outlet structure symbol and show the outlet piping with inverts. 6. The 100' wetland area that the Division allowed to be used as site area in the density calculations is being labeled as "developable area". This should not be considered as approval to "develop" within that 100' area. The 401/404 permit will have to address that. c- Ca1,Oltlla iV� ttur2 North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Entemet: www.ncwaterct_ualily.org Fax (910) 350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper Mr. Allen May 11, 2006 -- Stormwater Application No. SW8 060509 7. What is the "Estuary Grouping" noted within Spicer Lake? It appears to be located within the main pond and one or two of the forebays. 8. is it possible to condense the. BUA per lot listing such that it doesn't take 22 pages? Since the lots are sequentially numbered, and either have 2,800, 3,200, 3,500, 4,000, or 4,500, square feet of BUA, I think the listing could be reduced to less than one page: 394 lots @2,800 ft2 (Lots 93-277, 624-793, and 796-834, inclusive); 221 lots @3,200 ft2 (Lots 1-51, 365-397, 522-539, 837-869, 897-926, 977- 1030, and 1032-1033, inclusive); 248 Lots @3,500 ft2 (Lots 52-92, 278-339, 419-505, 567-620, 794, 795, 835, and 836 inclusive) 92 Lots @4,000 ft (Lots 340-364, 398-418, 506-521, 540-566, and 621-623, inclusive); 78 Lots @4,500 ft2 (Lots 870-896, 927-976, and 1031 inclusive) 9. Please identify which streets will be curbed and which ones will not. This can be accomplished by either listing the names of the streets under the application street section, or providing information on the plans regarding which cross-section applies to a street. 10. Please locate and label the width of all proposed drainage easements on the plans. Easements are needed where pipes or swales will be routed down lot property lines. 11. The orifice diameter of Twining Rose pond is specified as 3.3". You may want to specify a standard stock size such as 3.25" or 3.5", as long as it fits within the allowable range of sizes to achieve a 2-5 day drawdown. 12. Please seal the plan sheets. A high density permit cannot be issued until the plans are sealed. 13. Please add the nearest intersection of two major roads to the vicinity map. A major road is any 1, 2 or 3 digit NC, US or interstate highway. Ideally, the vicinity map should be geared toward driving to the site from Wilmington. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to May.25, 2006, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Page 2 of 3 Mr. Allen May 11, 2006 Stormwater Application No. SW8 060509 Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 796-7404. Sincerely, Linda Lewis Environmental Engineer ENBlarl: S:IWQSISTORMWATERIADDINFO120061060509.may06 cc: Carl Huddle, P.E., Carolina Engineers Doug Huggett, DCM Linda Lewis Page 3 of 3 '. If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing. permit number NIA and its issue date (if known) NIA 3. Specify the type of project (check one): X Low Density High Density Redevelop General Permit Other 4. Additional Project Requirements (check applicable blanks): X 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. Ill, PROJECT INFORMATION 1. In the space provided below, summarize how stormwater mill be treated, Also attach a detailed narrative (one to two pages) describing stormwater management for the project. See Stormwater Management Detailed Summary this Section) 2. Stormwater runoff from this project drains to the 3. Total Project Area: 515 acres 5. How many drainage areas does the project have? 7 White Oak River basin. 4. Project Built Upon Area: 20.08% 6. Complete the following information for each drainage area. If there arc 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 Kings Creek Kings Creek Receiving Stream Class SC Waters SC Waters Drainage Area 1,809,386 2,357,455 Existing Impervious* Area 0 0 Proposed Impervious* Area 433,23E 589,275 % Impervious* Area (total) 23.94% 25% Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Streets 116,386 126,883 On -site Sidewalks 16,871 23,348 Club House & Parking 15,638 0 Wastewater Treatment Plant 0 42,544 Boat Storage 82,736 0 Lots 201,600 346,500 Future Development 50,000 50,000 Total: 433,231 Total: 589,275 * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks-, gravel areas, etc. Form S WU-101 Version 3.99 11age 2 or Basin Information Drainage Area 3 Drainage Area 4 Receiving Stream Name Kings Creek Kings Creek Receiving Stream Class SC Waters SC Waters Drainage Area 2,880,927 2,016,843 Existing Impervious* Area 0 0 Proposed Impervious* Area 710,977 487,535 % Impervious* Area (total) 24.68% 24.17% Impervious* Surface Area Drainage Area 3 Drainage Area 4 On -site Streets 239,934 87,511 On -site Sidewalks 39,043 32,024 Club House & Parking 0 0 Wastewater Treatment Plant 0 0 Boat Storage 0 0 Lots 432,000 368,000 Future Develo ment 1 0 0 Total: 710,977 "Total: 487,535 Basin Information Drainage Area 5 Drainage Area 6 Receiving Stream Name Everett Bay Kings Creek/Everett Bay Receiving Stream Class SC Waters SC Waters Drainage Area 335,808 5,232,224 Existing Impervious* Area 0 0 Proposed Impervious* Area 97,158 1,229,196 % Impervious* Area (total) 2893% 23.49% Impervious* Surface Area Drainage Area 5 Drainage Area 6 On -site Streets 24,569 260,757 On -site Sidewalks 5,389 83,003 Club House & Parking 0 24,436 Wastewater Treatment Plant 0 0 Boat Storage 0 0 Lots 67,200 86,100 Future Development 0 0 Total: 97,158 Total: 1,229,196 Basin Information Drainage Area 7 Total Drainage Area Receiving Stream Name Spicer Bay/Everett Bay Spicer Bay/Everett Bay/Kings Creek Receiving Stream Class SC Waters SC Waters Drainage Area 6,380,534 21,013,177 Existing Impervious* Area 0 0 Proposed impervious* Area 1,297,400 4,838,372 % Impervious* Area (total) 20.33% 23.03% Impervious* Surface Area Drainage Area 7 Total Drainage Area On -site Streets 105,521 961,561 On -site Sidewalks 27,079 226,757 Club House & Parking 0 40,074 Wastewater Treatment Plant 0 42,544 Boat Storage 0 82,736 Lots 1,164, 800 3,434, 700 Future Development 0 50,000 Total: 1,297,400 TTtal: 4,838,372 7. How was, the off -site impervious area listed above derived? No off -site impervious areas drain into the site. Permit No.�56 OU05061_ (to be provided by D WQJ State of North Carolina Department of Environment and Natural Resources ` Division of Water Quality STORiVIWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied far use as an original DWQ Storinwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Summerhouse on Everett Ray Contact Person: Carl C. Huddle, PE Phone Number: ( 252 ) 633-2424 For projects with multiple basins, specify which basin this worksheet applies to: Katydid Pond elevations Basin Bottom Elevation 11.00 ft. '(floor of the basin) Permanent Pool Elevation 17.00 ft. (elevation of the orifice) Temporary Pool Elevation 18.00 ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 81,122.00 Drainage Area 16.99 Impervious Area 7.98 volumes sq. ft. (water surface area at the orifice elevation) ac. (on -site and off -site drainage to the basin) ac. (on -site and off -site drainage to the basin) Permanent Pool Volume 275,660.00 cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume 85,803.00 cu. ft. (volume detained above the permanent pool) Forebay Volume 66,224.00 cu. ft. (approximately 20% of total volume) Other parameters SA/DA1 2.52 (surface area to drainage area ratio from DWQ table) Diameter of Orifice 2.5 in. (2 to .i day temporary pool draw -down required) Design Rainfall 1.0 Design TSS removal 2 90 i Form SUW-102 Rev 3.99 In. % (minimum 85% required) Page 1 of 4 Permit No, V W O Ui5 (to be provided by D WQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWO Stormwater Management Plan Review; A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION Project Name: Summerhouse on Everett Ray Contact Person: Carl C. Huddle, PE Phone Number: ( 252 ) 633-2424 For projects with multiple basins, specify which basin this worlcsheet applies to: painted Lady elevations Basin Bottom Elevation 9.00 ft. (floor of the basin) Permanent Pool Elevation 18.00 ft. (elevation of'the orifice) Temporary Pool Elevation 19.00 ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area t24,538.00 sq. ft: (water .surface area at the orifice elevation) Drainage Area 26.38 ac. (on -.cite and off -site drainage to the hasin) Impervious Area 8.06 ac. (on -site and off -site drainage to the basin) volumes Permanent Pool Volume 517,044.00 cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume 128,380.00 cu. ft. (volume detained above the permanent pool) Forebay Volume 119,755.00 cu. ft. (approximately 20% of total volume) Other parameters SA/DAi 1.65 (surface area to drainage area ratio from DWQ table) Diameter of0rilice 2.5 in. (2 to .5 day temporary pool draw -down required) Design Rainfall Design TSS Removal 2 ' Form SUW-102 Key 3.99 1.0 in. 90 % (minimum 85% required) Page I of 4 Permit No. G LOS Dl UJ- D ! (to be provided by D 6YQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT T his form may be photocopied for use as an original DWQ StormNvater Management flan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Summerhouse on Everett Bay Contact Person: Carl C. Huddle, PE Phone Number: ( 252 ) 633-2424 For projects with multiple basins, specify which basin this worksheet applies to: Spicer Lake elevations Basin Bottom Elevation Permanent Pool Elevation Temporary Pool Elevation 8.00 ft. -(floor of the basin) 17.00 ft. (elevation of the orifice) 18.00 ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 1,202,610.00 sq. ft. Drainage Area 109.17 ac. Impervious Area 51.44 ac. (water surface area at the orifice elevation) (on -site and off -site drainage to the basin) (on -site and off -site drainage to the basin) volumes Permanent Pool Volume 8,714,253.00 cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume 1,220,676.00 cu. ft. (volume detained above the permanent pool) Forebay Volume 756,122.00 cu. ft. (approximately 20% of total volume) 20% of required volume of 37,574CF Other parameters SA/DAi 2.52 (surface area to drainage area ratio from DWQ table) Diameter of Orifice 6.25 in. (2 to 5 day temporary pool draw -dawn required) Design Rainfall 1.0 in. Design TSS Removal 2 90 % (minimum 85% required) Form SUW-102 Rev 3.99 Page 1 of 4 Permit No.I��U U iJ 1 (to be provided by D WQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Storm -water Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION Project Name: Summerhouse on Everett Bay Contact Person: Carl C. Huddle, PE Phone Number: 252 633-2424 For projects with multiple basins, specify which basin this worksheet applies to: Twining Rose elevations Basin Bottom Elevation 8.00 ft. (floor of the basin) Permanent Pool Elevation 15.00 ft. (elevation of the orifice) Temporary Pool Elevation 16.00 ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 191,393.00 sq. ft Drainage Area 39.91 ac. Impervious Area 13.02 ac volumes (water surface area at the orifice elevation) (on -site and off -site drainage to the basin) (on -site and off -site drainage to the basin) Permanent Pool Volume 873,166.00 cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume. 197,291.00 cu. ft. (volume detained above the permanent pool) Forebay Volume 171,835.00 Cu. ft. (approximately 20% of total volume) Other parameters SAIDAI 2.08 (surface area to drainage area ratio from DWQ table) Diameter of Orifice 3.3 in. (2 to 5 day temporary pool draw -down required) Design Rainfall 1.0 in. Design TSS Removal 2 90 % (minimum 85% required) For-3 SUW-102 Rev 3.99 Page l of 4 r EE:ii•aii0° CAROLINA ENGINEERS, PA � Geotechnicai • Construction Materials • Forensic • Site Development • Surveying aWiz sS -- LL 5-I0- 2CX-) Ca LU May 9, 2006 we ' rvld5. Ms. Linda Lewis NC Department of Environment and Natural Resources Division of Water Quality Section — Wilmington Regional Office 127 Cardinal Drive Extension Wilmington, NC 28405-3845 RE: Low Density Stormwater Management Plan Summerhouse on Everett Bay, Onslow County, NC Ms. Lewis, On behalf of R.A. North Development I, Carolina Engineers, PA is submitting a Low Density Stormwater Management Plan. have enclosed a check for the application fee. If additional information is needed or you have any questions, please feel free to call. Sincerely, Carolina Engineers, P Carl C. Huddle, P.E. Project Manager MAY Enclosure(s): 2- binders 2- Sets of Drawings PO Box 1595, New Bern, NC 28563, Tele: (252) 633-2425, Fax: (252) 633-1370, www.carolinaengineers.com 1460 CAROLINA ENGINEERS, P.A. P.O. BOX 1595 NEW BERN, NC 28563-1595 fib-112/531 DATE J 9, z130Cf o,eo, PAY /� � Z O T M E /t / ` I $ /1� ORDER OF ' jpp _/-4_ C(1S/�`Ly �P7�i=T�� rc DOLLARS BB&T CAROLINA ENGINEERS, P.A. w BRANCH BANNING AND TRUST COMPANY NEW BERN, NORTH CAROLINA oFOR �, s�lt/n/n��(L� cI,SC. 0%Q -- - - - — --- - -- --~ L A\\\ uj z `' �. V+i s o Q i a i --, } z CJ '� z Q C M a z Co 41 LU° �F� ° tlH yr�v„�wy;.ynr'IJ�a�yL Ail1V5 ®Ntllf]Hbfl�l Page 1 of 1 North Carolina Elaine F MarShail DEPARTMENT OF THE Secretary SECRETARY OF STATE Corporations *Corporations Home *Important Notice *Corporate Forms/Fees eCorporations FAQ *Tobacco Manufacturers •Dissolution Reports •Nan -Profit Reports •Verify Certification GOnline Annual Reports 4KBBE B2B Annual Reports Links 'Secretary Of State Home •Register for E-Procurement •Dept. of Revenue Legislation 01999 Senate Bills 02001 Bill Summaries GAnnual Reports 1997 *Corporations 1997 °Other Legislation Search eBy Corporate Name *For New Corporation •By Registered Agent Online Orders •Start An Order •New Payment Procedures Contact Us •Corporations Division *Secretary of State's web site Print *Printable Page PO Box 29622 Raleigh, NC 27626-0622 (919)807-2000 Date: 5/11 /2006 Click here to: View Document Filings 1 Print apre-populated Annual Report Form I Annual Report Count I Fil an Annual Report I Corporation Names Name Name Type NC R.A. North Legal Development I, Inc. Business Corporation Information SOSID: Status: Date Formed: Citizenship: State of Inc.: Duration: Registered Agent Agent Name: Registered Office Address Registered Mailing Address: Principal Office Address Principal Mailing Address: Stock Class Common Non Voting Common Voting 0702005 Current -Active 12/9/2003 Domestic NC Perpetual Allen, Randolph M. 110 Matthews Station, Suite 2D Matthews NC 28105 110 Matthews Station, Suite 2D Matthews NC 28105 10800 Sikes Place, Suite 250 Charlotte NC 28277 10800 Sikes Place, Suite 250 Charlotte NC 28277 Shares No Par Value 90000 Yes 10000 Yes Par Value NIA NIA For questions or comments about the North Carolina Secretary of State's web site, please send e-mail to Webmaster. http://www.secretary.state.nc.us/Corporations/Corp.aspx?Pitemld�6167642 5/11 /2006 SOSID: 702005 Date Filed: 1219/20t13 3:15:00 PM Elaine F. Marshall North Carolina Secretary of State C200334300291 STATE OF NORTH CAROLINA DEPARTMENT OF THE SECRETARY OF STATE ARTICLES OF INCORPORATION Pursuant to §55-2-02 of the General Statutes of North Carolina, the undersigned does hereby submit these Articles of Incorporation for the purposes of forming a business corporation. l . The name of the corporation is R.A. North_ Development I. Inc. 2. The number of shares the corporation is authorized to issue is 100,000. These shares shall be of two classes, voting and non -voting, designated as common stock. 90,000 shares shall be non —voting common stock and 10,000 shall be voting common stock. 3. The street address and county of the principal office of the corporation is: 10800 Sikes Place, Suite 250, Charlotte, NC 28277 _ County: .Mecklenburg 4. The street address and county of the initial registered office of the corporation is: 10900 Sikes Place. Suite 250. Charlotte. NC 28277_ County: Mecklenburg The name of the initial registered agent is Vivian Whitley G. The name and address of the incorporator is as follows: Valerie P. Mahoney Culp Elliott R Carpenter, P.L.L.C. 4401 Barclay Downs Drive, Suite 200 Charlotte, NC 28209 7. To the fullest extent permitted by applicable law, no director of the Corporation shall have any personal liability arising out of any action whether by or in the right of the Corporation or otherwise for monetary damages for breach of any duty as a director. This Article shall not impair any right to indemnity from the Corporation that any director may now or hereafter have. Any repeal or modification of this Article shall be prospective only and shall not adversely affect in any respect acts or omissions occurring prior to such repeal or modification, Dated: December 2, 2003 v Valerie P, Mahoney, Incorporator WORo•116241 SOS I D: 0702005 Date Filed: 5/20/2005 9.04*00 AM Elaine F. Marshall North Carolina Secretary of State C200513700627 STATE OF NORTH CAROLINA DEPARTMENT OF THE SECRETARY OF STATE STATEMENT OF CHANGE OF REGISTERED OFFICE AND/OR REGISTERED AGENT Pursuant to §55D-31 of the General Statutes of North Carolina, the undersigned entity submits the following for the purpose of changing its registered office and/or registered agent in the State of North Carolina. INFORMATION CURRENTLY ON FILE The name of the entity is: R.A. North Development J. Inc. Entity Type: Corporation, (]Foreign Corporation, ONonprofil Corporation, Foreign Nonprofit Corporation, []Limited Liability Company, OForeign Limited Liability Company []Limited Partnership, ❑Foreign Limited Partnership, ❑Limited Liability Partnership, ❑Foreign Limited Liability Partnership The street address and county of the entity's registered office currently on file is: Number and Street: 10800 Sikes Place, Suite 250 City, State, Zip Code: Charlotte, NC 28277 County: Mecklenburg The mailing address if differentfrom the street address of the registered office currently on file is: The name of the current registered agent is: Vivian Whitley NEW INFORMATION 1. The street address and county of the new registered office of the entity is: (complete this item only if the address of the registered office is being changed) Number and Street: 110 Matthews Station, Suite 20 City, State, Zip Code: Matthews, NC 28105 County: Mecklenburg 2. The mailing address if different from the street address of the new registered office is: (complete this item only if the address of the registered office is being changed) 110 Matthews Station, Suite 2D, Matthews, NC 28105 3. The name of the new registered agent and the new agent's consent to appointment appears below: (complete ibis item only if the name of the registered agent is being changed) / Randolph M. Allen �e—�-� �� , , Type or Print Name of New Agent * Signature & 7111e 4. The address of the entity's registered office and the address of the business office of its registered agent, as changed, will be identical. 5. This statement will be effective upon filing, unless a date and/or time is specified: This is the yZ X day of //7 20Q�. R. A. North Development 1, Inc. E iry Name ll�C Signature Randolph M. Allen, President Type or Print Name and 7111e Notes: Filing fee Is SS.ee. This document must be tiled with the Secretuy of State. * Instead of signing here, the new registered agent may sign a separate written consent to the appointment, which must be attached to this statement. CORPORATIONS DIVISION P. O. BOX 29622 RALEIGIi, NC 27626-0622 Revised January 2002 Form BE-06