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HomeMy WebLinkAboutSW8160910_HISTORICAL FILE_20161021PERMIT NO. DOC TYPE STORMWATER DIVISION CODING SH POST -CONSTRUCTION PERMITS r ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE I a01 b I0 Q I Ir"iiilk",I!,1919] tt Energy, Min era I & Land Resources ENVIRONMENTAL QUALITY October 21, 2016 PAT McCRORY Governor DONAL.D R. VAN DER VAART Secretary William W. Schoettelkotte, Manager 1VC.M[ Enterprises, LLC 305 Colonial Dr. Wilmington, NC 28403 Subject: State Stormwater Management Permit No. SW8 160910 Enterprise Drive Self Storage Iligh Density Wet Detention Pond Project Brunswick County Dear Mr. Schoetlelkotte TRACY DAVIS Director The Wilmington Regional Office received a complete Stormwater N.Tanagement Permit Application for the Enterprise Drive Self Storage on October 18, 2106. Staff review of the plans and specifications has determined that the project, as proposed; will comply with the Stormwater Regulations set forth in "Title 15A NCAC 21-1.1000 and Session I,aw 2008-211. We are forwarding Permit No. S1t'8 160910 dated October 21, 2016, for the construction, operation and maintenance of the BMJ1"s and built -upon areas associated with the subject project. This permit shall be effective from the date of issuance until October 21, 2024, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the conditions listed in this permit regarding the Operation and Maintenance of the BNIP(s), recordation of deed restrictions, certification of the BI1IP's, procedures for changing ownership, transferring the permit, and renewing the permit, Failure to establish an adequate system for operation and maintenance of the stormwater management system, to record deed restrictions, to certify the BNIP's, to transfer the permit, or to renew the permit; 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 by filing a written petition with the Office of Administrative Hearings (OAH). The written petition must conform to Chapter 150B of the North Carolina General Statutes, and must be filed with the OAl-I within thirty (30) days of receipt of this permit. You should contact the OA.1-1 with all questions regarding the filing fee (if a filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via telephone at 919-431-3000, or visit their website at www.NTCOAH.com, Unless such demands are made this permit shall be filial and binding. If you have any questions, or need additional information concerning this matter, please contact Cbristme Hall in the 1V lmington Regional Office, at (9I0) 796-7215. Sincerely 1 l N, Tracy .Da s, P.E., .Director Division of Energy, Mineral and Land Resources GDS/ canh: 111StormwaterlPermits & Projects120161160910 HD\201'6 10 permit 160910 cc: Branch Smith, Paramounte Engineering Brunswick County Building Inspections Brunswick County Engineering Wilmington Regional Office Stormwater File State of North Carolina I Environmental Quality l Energy. Mineral and Land Resources Wilmington Regional Office E 127 Cardinal Drive Extension I Wilmington. NC 28405 91 D 796 7215 State Stormwater Management Systems Permit No. SW8 160910 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES 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 WCM Enterprises, LLC Enterprise Drive Self Storage Enterprise Drive and Trade Street, Leland, Brunswick County FOR THE construction, operation and maintenance of two (2) wet detention ponds in compliance with the provisions of 15A NCAC 2H .1000 and Session Law 2008-211 (hereafter referred to as the "stormwater rules') the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Energy, Mineral and Land Resources (hereafter referred to as the Division or DEMLR) and considered a part of this permit. This permit shall be effective from the date of issuance until October 21, 2024, 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 1.8 of this permit. The runoff from all built -upon area within the permitted drainage areas of this project must be directed into the permitted stormwater control measures. The stormwater control measures labeled Pond A and Pond B have been designed to handle the runoff from 136,260 and 84,500 square feet of built -upon area, respectively. 3. The maximum built -upon area allowed for the entire project is 220,760 square feet. 4. The drainage areas will be limited to the amounts of built -upon area indicated in Sections 1.2 and 1.8 of this permit, and per approved plans. The built -upon area for future development within the drainage areas for Pond A and Pond B are limited to 25,000 and 35,000 square feet, respectively. 5. A 50' wide vegetative buffer must be provided and maintained adjacent surface waters, measured horizontally from and perpendicular to the normal pool of impounded structures, the top of bank of both sides of streams and rivers and the mean high water line of tidal waters. Page 1 of 7 State Stormwater Management Systems Permit No. SW8 160910 6. -Vegetated filter strips are not required for these ponds as they have been designed for a 90% total suspended solids removal efficiency. 7. All runoff being directed into wetlands shall flow into and through those wetlands at a non -erosive velocity. 8. The following design criteria have been permitted for the wet detention pond and it must be provided and maintained at the design condition: Pond A Pond B a. Drainage Area, acres: Onsite, ft2: Offsite, ft2: 4.74 206,799 0 2.66 116,000 0 b. Total Impervious Surfaces, ft2: Onsite, ft2: Offsite, ft2: 136,260 136,260 0 84,500 84,500 0 c. Average Pond Design Depth, feet: 4.5 4.0 d. TSS Removal Efficiency: 90% 90% e. Design Storm. inches: 1.5 1.5 f. Permanent Pool PP Elevation, FMSL: 53.0 I 54.5 g. Permitted PP Surface Area, ft2: 12,173 7,546 h. Temporary Storage Elevation, FMSL: 54.5 56.0 i. Permitted Storage Volume, ft3: 20,314 12,851 j. Predevelopment 1 yr-24 hr. discharge rate, cfs: 13.0 20.0 k. Controlling Orifice, inch 0 pipe: 2.00 0.06 1.75 0.05 I. Orifice Flow Rate, cfs7 m. PP Volume, ft3: 38,536 21,493 n. Forebay Volume, ft3: 7,735 4,159 o. Maximum Fountain Horsepower: 118 nla p. Receiving Stream/River Basin: Banton Branch q. Stream Index Number: 18-77-1-1-2 r. Classification of Water Body: C Ill. SCHEDULE OF COMPLIANCE No person or entity, including the permittee, shall alter any component of the approved stormwater system shown on the approved plans unless and until the Division has approved of the revised plan. 2. 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. 3. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. If the stormwater system is 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. 4. The permittee shall at all times provide the operation and maintenance necessary to assure that all components of the permitted stormwater system function at design condition. The approved Operation and Maintenance Agreement is incorporated by reference into this permit and must be followed in its entirety and maintenance must occur at the scheduled intervals. 5. Records of maintenance activities must be kept and made available upon request to authorized personnel of the Division. The records will indicate the date, activity, name of person performing the work and what actions were taken. Page 2 of 7 State Stormwater Management Systems Permit No. SW8 160910 6. Since the permanent poolvolume for Pond A is greater than 30,000 cubic feet, a decorative spray fountain will be allowed in the stormwater treatment system, subject to the following criteria- a. The fountain must draw its water from less than 2' below the permanent pool surface. b. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. C. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for a fountain in this pond is 1/8 horsepower. A decorative spray fountain will not be allowed in Pond B as the permanent pool volume is less than 30,000 cubic feet. 7. The facilities shall be constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 8. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, the permittee shall cause a certification from an appropriate designer for the system installed to be submitted, certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 9. All stormwater collection and treatment systems must be located in either public rights - of -way, dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such rights -of -way, common areas and easements, in accordance with the approved plans. Access to the stormwater facilities for inspection and maintenance shall be maintained via appropriate recorded easements at all times. 10. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Redesign or addition to the approved amount of built -upon area or to the drainage area. C. Further development, subdivision, acquisition, lease or sale of any, 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. d. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. e. The construction of any future BUA listed on the application. 11. Prior to transfer of the permit, the stormwater facilities will be inspected by Division personnel. The project and the stormwater facility must be in substantial compliance with all permit conditions. Any items not in substantial compliance must be repaired, replaced or restored to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 12. 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 7 State Stormwater Management Systems Permit No. SW8 160910 III. GENERAL CONDITIONS 1. Any individual or entity found to be in noncompliance with the provisions of a stormwater management permit or the Stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21. 2. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 3. In the event that the facilities fail to perform satisfactorily 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. Additional or replacement stormwater management systems shall receive a permit from the Division prior to construction. 4. This permit is not transferable to any person or entity except after notice to and approval by the Director. The permittee shall submit a completed and signed Name/Ownership Change Form, accompanied by the supporting documentation as listed on the form, to the Division of Energy, Mineral and Land Resources at least 60 days prior to any one or more of the following events: a. An ownership change including the sale or conveyance of the project area in whole or in part, except in the case of an individual lot sale that is made subject to the recorded deed restrictions- b. The sale or conveyance of the common areas to a Homeowner's or Property Owner's Association, subject to the requirements of Session Law 2011-256; c. Bankruptcy; d. Foreclosure, subject to the requirements of Session Law 2013-121; e. Dissolution of the partnership or corporate entity, subject to NCGS 57D-2-01(e) and NCGS 57D-6-07; f. A name change of the current permittee; g. A name change of the project; h. A mailing address change of the permittee; 5. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. Neither the sale of the project, in whole or in part, nor the conveyance of common area to a third party constitutes an approved transfer of the stormwater permit. 6. The permittee grants DEMLR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 7. The permit issued shall continue in force and effect until modified, revoked, terminated or renewed. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. Approved plans, calculations, supplement forms, operation and maintenance agreements and specifications for this project are incorporated by reference and are enforceable parts of the permit. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times. 9. Unless specified elsewhere, permanent seeding requirements for the stormwater control measure must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. Page 4 of 7 State Stormwater Management Systems Permit No. SW8 160910 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2006-246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al. 11. The permittee shall submit a permit renewal application request at least 180 days prior to the expiration date of this permit. The renewal request must include the appropriate application, documentation and the processing fee. Permit issued this the 215f day of October 2016. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Permit Number SW8 160910 Page 5 of 7 State Stormwater Management Systems Permit No. SW8 160910 Enterprise Drive Self Storage Stormwater Permit No. SW8 160910 Brunswick County Designer's Certification I, , as a duly registered in the State of North Carolina,'having been authorized to observe (periodically/ weekly/ full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specifications: Signature Registration Number Date SEAL Page 6 of 7 State Stormwater Management Systems Permit No. SW8 160910 Certification Requirements- 1 . The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The outlet structure elevations are per the approved plan. 6. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3.1. .10. The inlets are located per the approved plans and do not cause short-circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. .12. Required drawdown devices are correctly sized and located per the approved plans. .13. All required design depths are provided. .14. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 15. The required system dimensions are provided per the approved plans. .16. All components of the stormwater BMP are located in either recorded common areas, or. recorded easements. cc: NCDEQ-DEMLR Wilmington Regional Office Brunswick County Building Inspections Page 7 of 7 DEMLR USE ONLY Date Received Fee Paid Permit Number Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction (select all that apply) ❑ Non -Coastal SW- I-IQW/ORW Waters ❑ Universal Stormwater Management Plan ❑ Other WQ M mt Plan: State of North Carolina Department of Environment and Natural Resources Division of Energy, Mineral and Land Resources STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may he photocopied for use as an original 1. GENERAL INFORMATION 1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specificatio�ib, letters, operation and maintenance agreements, etc.): 1I0A) 2. Location of Project (street address): City:Leland County: Brunswick Il Zi 3. Directions to project (from nearest major intersection): IV Travel US 74-76 past Leland; Take Right on Enterprise Drive at Windsor Commerical Park; Site is on Vacant Property on left corner of Enterprise Dr. 4. Latitude: 34' 15' 35.3" N Longitude:78° 4' 22" W of the main entrance to the project. 1I. PERMIT INFORMATION: 1. a. Specify whether project is (check one): ®New ❑Modification ❑ Renewal w/ Modificationt tReneuuls With niodifrcations also requires S11VU-102 - RewWal Application Form b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit number its issue date (if known) and the status of construction: ❑Not Started ❑Partially Completed* ❑ Completed* -Provide a designer's certification Specify the type of project (check one): ❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other 3. If this application is being submitted as the result of a previously returned application or a letter from DEMLR requesting a state stormwater management permit application, list the Stormwater project number, if assigned, and the previous name of the project, if different than currently proposed, 4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ❑CAMA Major ®Sedimentation/Erosion Control: 11 ac of Disturbed Area ❑NPDES Industrial Stormwater 0404/401 Permit: Proposed Impacts b.lf any of these permits have already been acquired please provide the Project Name, Project/ Permit Number, issue date and the type of each permit: 5. Is the project located within 5 miles of a public airport? ®No ❑Yes If yes, see S.L. 2012-200, Part VI: littp:/Iportal.ncdenr.org/web/ir/rules-aid-reeuiations Form SWU-101 Version Oct. 31, 2013 Page I of 6 III. CONTACT INFORMATION 1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee, designated government official, individual, etc. who owns the project): Applicant/ Organization: WCM Enterprises, LLC Signing Official & Title:William W. Schoettelkotte-Manager b. Contact information for person listed in item 1a above: Street Address:305 Colonial Dr City: Wilmington Mailing Address (if applicable) City: State:NC State: Phone: { },, � Fax: Email: b5chol�.G1'!'lA�� •CArn Zip:28403 Zip: c. Please check the appropriate box. The applicant listed above is: ® The property owner (Skip to Contact information, item 3a) ❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below) ❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and 2b below) ❑ Developer* (Complete Contact Information, item 2a and 2b below.) 2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer_ (This is the person who owns the property that the project is located on): Property Owner/Organization: Signing Official & Title: b. Contact information for person listed in item 2a above: Street Address: City: State: Zip: Mailing Address (if applicable): City: State: Zip: Phone: ( Fax: Email: 3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project: Other Contact Person/Organization: Signing Official & Title: b. Contact information for person listed in item 3a above: Mailing Address: City: Phone: Email: 4. Local jurisdiction for building permits: State: Zip: Fax: ] Point of Contact:Helen Bunch - Zoning Administrator Uh SE+ 2 IV E BY: Form SW- 101 Version Oct. 31, 2013 Page 2 of 6 IV. PROJECT INFORMATION U In the space provided below, hriefly summarize how the stormwater runoff will be treated. Runoff from parking and buildings will be conveyed through-Iipe network(s) to two separate single wet detention pond. 2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved: ❑ Approval of a Site Specific Development Plan or PUD Approval Date: ❑ Valid Building Permit Issued Date: ❑ Other: Date: b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with: ❑ Coastal SW - 1995 ❑ Ph II - Post Construction 3. Stormwater runoff from this project drains to the CAPE FEAR River basin. 4. Total Property Area: 10.60 acres 5. Total Coastal Wetlands Area: 0 acres 6. Total Surface Water Area: 0 acres 7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project Arew:10.60 acres Total project area shall be calculated to exclude the following: the norinal pool of itnpounded structures,,the area bcfween the bairks of streams and rivers, the area belato the Nonnal High Water (NNW) lute or Meats High Water (MHW) litre, and coastal wetlands landroard froin the NHW (or MHW) line. The resultant project area is used to calculate overall percent built upon area (BUA). Non -coastal Wetlands landward of the NHW (or MHW) line may be included its the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 45 % 9. How many drainage areas does the project have?1 (For high density, count 1 for each proposed engineered stornnoater BMP. For loco density and other projects, use I for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9. If there are more than four 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 A T Drainage,rea B Drainage Area Drainage Area Receiving Stream Name Banton ` Banton Stream Class * C C Ilk Stream Index Number * 18-77-1-1-2 18-77-1-1-2 —11 Total Drainage Area (so 206,799 116,000 .UL 1 11 On -site Drainage Area (so 206,799 116,000 14 Off -site Drainage Area (so 0 0 ' Proposed Impervious Area** (so 136,260 84,500 Impervious Area** total 66% 73% impervious" Surface Area Drainage Area A Drains e Area B Drainage Area _ Drainage Area _ On -site Buildings/Lots (so 45,570 19,500 On -site Streets (so 60,940 30,000 On -site Parking (sf) 4,400 On -site Sidewalks (so 350 Other on -site (so Future (so 25,000 35,000 Off -site (sf) Existing BUA*** (sf) Total (so: 1 136,260 84,500 * Streani Class and Index Nuinber can be deterinined at: littl7-fj7ortal.ijc(letir.org/zoelA(,(07slcsiilclassiflcatioiis Ini ler i.oris area is defined as the built upon area including, brit not liinited to, buildings, roads, parking areas, si ewalks, gravel areas, etc. Form SWU-101 Version Oct. 31, 2013 Page 3 of * Report only that amount of existing BUA that will retrain after development. Do not report any existing BUA that is to be removed and which will be replaced by new B UA, 11. How was the off -site impervious area listed above determined? Provide documentation. XQWW� Pro'ects in Union County: Contact DEMLR Central Office staff to check if the project is located within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater requirements as per 15A NCA C 02B . 0600. V. SUPPLEMENT AND O&M FORMS The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded from http://portal.ncdenr.org/web/wq/ws/sump-manual. VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Energy, Mineral and Land Resources (DEMLR). A complete package includes all of the items listed below. A detailed application instruction sheet and BMP checklists are available from hn://i2ortaI.ncdenr.org/web/wq/ws/su/statesw/forms docs. The complete application package should be submitted to the appropriate DEMLR Office. (The appropriate office may be found by locating project on the interactive online map at htt2://portal.ncdenr.orgLweb/wq/ws/su/mates.) Please indicate that the following required information have been provided by initialing in the space provided for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for each submitted application package from http://portal.ncdenr.org/web/wq/ws/su/statesw/­forms docs. Initials 1. Original and one copy of the Stormwater Management Permit Application Form. 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants At* Form. (if required as per Part VII below) 3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M agreement(s) for each BMP. Yam 4. Permit application processing fee of4,5B5 payable to NCDENR. (For an Express review, refer to httpf/www.envhelp.or�,Lpa�es/onestopexpress.html for information on the Express program and the associated fees. Contact the appropriate regional office Express Permit Coordinator for additional information and to schedule the required application meeting.) 5. A detailed narrative (one to two pages) describing the stormwater treatment/managementfor Q/bS the project. This is required in addition to the brief summary provided in the Project Information, item 1. 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the 1/2 mile radius on the map. 7. Sealed, signed and dated calculations (one copy). 8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: 0 a. Development/Project name. b. Engineer and firm. c. Location map with named streets and NCSR numbers. d. Legend. e. North arrow. ��� f. Scale. g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elev of impounded structures, the banks of streams and rivers, the Ml 1W or NHW i!-ne of tidal waters, and any coastal wetlands landward of the MHW or NHW lines. • Delineate the vegetated buffer landward from the normal pool elevation of impounded structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters. i. Dimensioned property/project boundary with bearings & distances. j. Site Layout with all BUA identified and dimensioned. k. Existing contours, proposed contours, spot elevations, finished floor elevations. I. Details of roads, drainage features, collection systems, and stormwater control measures. Form SWU-101 Version Oct. 31, 2013 Page 4 of 6 M- m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the main set of plans, not as a separate document). p. Vegetated buffers (where required). Copy of any applicable soils report with the associated SHWT elevations (Please identify elevations in addition to depths) as well as a map of the boring locations with the existing elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs, the report should also include the soil type, expected infiltration rate, and the method of determining the infiltration rate. (Infiltration Devices submitted to WiRO: Schedule a site visit for DEMLR to verify the SHVV7 prior to submittal, (910) 796-7378.) A copy of the most current property deed_ Deed book 1223 Page No: 223 For corporations and limited liability corporations (LLC): Provide documentation from the NC Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item 1a, 2a, and/or 3a per 15A NCAC 2H.1003(e). The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of State, otherwise the application will be returned. htMIZ /www.secretary.state.nc.us/Corporations/CSearch.aspx VIL DEED RESTRICTIONS AND PROTECTIVE COVENANTS a* - For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and protective covenants forms can be downloaded from htt : ortal.ncdenr.or web lr state-stormwater- forms does. Download the latest versions for each submittal. In the instances where the applicant is different than the property owner, it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, 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 NC DEMLR, and that they will be recorded prior to the sale of any lot. VIII. CONSULTANT INFORMATION AND AUTHORIZATION Applicant: Complete this section if you wish to designate authority to another indivi consulting engineer and/or firm) so that they may provide information on your beha addressing requests for additional information). Consulting Engineer: SEP 2 6 2016 Consulting Firm: Paramounte Engineering, Inc_ "„a Mailing Address:122 Cinema Drive City:Wilmington State:NC Zip:28403 Phone: (910 ) 791-6707 Fax: 17 f/ -6 -;� o Email:bsmith a@paramounte-eng.coni IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) 1, (print or tjpe name of person Iisted in Contact Information, item 2a) , certify that I own the property identified in this permit application, and thus give permission to (print or type name of person listed in Contact Information, item Ia) with (print or type name of organization listed in Contact Information, item 1a) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. Form SWU-101 Version Oct. 31, 2013 Page 5 of As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their lease agreement, or pending sale, responsibility for compliance with the DEMLR Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DEMLR immediately and submit a completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6. Signature: Date: I, a Notary Public for the State of _ . County of do hereby certify that personally appeared before me this _ day of and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL ECEIVE SEP 2 6 2016 My commission expires BY: X. APPLICANT'S CERTIFICATION 1, (Faint or i7jpe name of person listed in Contact Information, item 1a) William W. Schoettelkotte ofWCM Enteg?rises 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 the applicable stormwater rules under,,15A NCAC 2H .1000 and any other applicable state stormwater requirements. Signature: �w� Date: 91G/ji Notary oC��� a Nota Public for the State of f�-��1 � � . Coun of en6t,e-c do hereby certify, that (,��1� �c,�fn W Sc ersonally appeared before me this _a day of C ,rr 6 AO) and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission expires CL d Form S WU-101 Version Oct. 31, 2013 Page 6 of 6 i Permit No. � p 16L--)� 10 (to be provided by DWQ) Red triangles at the upper right hand corner indicate design comments Please complete the yellow shaded items ATA. NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BAS1N SUPPLEMENT This form must be hilted out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project name Enterprise Drive Self -Storage Contact person Branch Smith / Paramounte Engineering Phone number 910-791-6707 Date Drainage area number 10118016 DA-A II. DESIGN INFORMATION Site Characteristics Drainage area 206,799 ft' Impervious area, post -development % impervious Design rainfall depth Storage Volume: Non•SA Waters Minimum volume required Volume provided Storage Volume: SA Waters 1.5" runoff volume Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr runoff Minimum volume required Volume provided Peak Flow Calculations Is the pre/post control of the lyr 24hr storm peak flow required? 1-yr, 24-hr rainfall depth Rational C, pre -development Rational C, post -development Rainfall intensity: 1-yr, 24-hr storm Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow PrelPost 1-yr, 24-hr peak flow control Elevations Temporary pool elevation Permanent pool elevation SHWT elevation (approx. at the perm. pool elevation) Top of;Wvegetated shelf elevation Bottom of 1Aft vegetated shelf elevation Sediment cleanout, top elevation (bottom of pond) Sediment clean out, bottom elevation Sediment storage provided Is there additional volume stored above the state -required temp. pool? Elevation of the top of the additional volume Surface Areas Area, temporary pool Area REQUIRED, permanent pool 136.260 ftZ 65.89 % 1,5 in 16,622 ft3 20,314 ft' NA ft3 ft3 ft' ft3 Y (Y or N) OK, volume provided is equal to or in excess of volume required. 3.7 in scs (unitless) scs (unitless) scs inlhr OK 13.00 ft'/sec 13.00 ft3/sec 0.00 ft'/sec 54.50 fmsl 53.00 fmsl 53.00 fmsl 53.00 fmsl G' `WS%f 52.00 fmsl &' 'SHE 46.00 fmsl 45.00 fmsl 1.00 ft Y (Y or N) 54,5 fmsl OK 14,657 ft2 10,795 ft' r'1=1VE BY: Form SW4C1-Wet Detention Basin-Rev.9-4718112 Parts I, & II. Design Summary, Page 1 of 2 Permit No. w (to be provided by DWO) II. DESIGN INFORMATION SAIDA ratio 5.22 (unitless) Area PROVIDED, permanent pool, Awm_poo, 12,173 ft2 OK Area, bottom of 1 Oft vegetated shelf, Aso, ,,h 8,459 ft2 Area, sediment cleanout, top elevation (bottom of pond), Abot-pond 2,079 ft2 Volumes Volume, temporary pool 20,314 ft' OK Volume, permanent pool, Vpermyool 38,536 ft' Volume, forebay (sum of forebays if more than one forebay) 7,735 ft' Forebay % of permanent pool volume 20.1 % % OK SAIDA Table Data Design TSS removal 90 % Coastal SAIDA Table Used? Y (Y or N) Mountain/Piedmont SAIDA Table Used? (Y or N) SAIDA ratio 5.22 (unitless) Average depth (used in SAIDA table): Calculation opt}on I used? (See Figure 10-2b) N (Y or N) Volume, permanent pool, Vperm_pool 38,536 ft' Area provided, permanent pool, Aperm-pool 12.173 fie Average depth calculated NA ft OK Average depth used in SAIDA, d., (Round to nearest 0.5ft) NA ft Calculation option 2 used? (See Figure 10.2b) Y (Y or N) Area provided, permanent pool, Aperm-pool 12,173 ft2 Area, bottom of 1Oft vegetated shelf, Abo, 5nea 8,459 ft2 Area, sediment clean out, top elevation (bottom of pond), AM pood 2,079 ft2 'Depth' (distance b/w bottom of 10ft shelf and top of sediment) 6,00 ft Average depth calculated 4.60 ft OK Average depth used in SAIDA, dd,, (Round to down to nearest 0.5ft) 4.5 ft OK Drawdown Calculations Drawdown through orifice? Diameter of orifice (if circular) Area of orifice (if -non -circular) Coefficient of discharge (Co) Driving head (Ho) Drawdown through weir? Weir type Coefficient of discharge (C.) Length of weir (L) Driving head (H) Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Storage volume discharge rate (through discharge orifice or weir) Storage volume drawdown time Additional Information Vegetated side slopes Vegetated shelf slope Vegetated shelf width Length of flowpath to width ratio Length to width ratio Trash rack for overflow & orifice? Freeboard provided Vegetated filter provided? Recorded drainage easement provided? Capures all runoff at ultimate build -out? Drain mechanism for maintenance or emergencies is Y (Y or N) 2.00 in in 0.60 (unitless) 0.50 ft N (Y or N) (unitless) (unitless) ft ft 13,00 ft'Isec 13.00 ft'Isec 0.06 ft'Isec 3,12 days #VALUE! EOEI V E OCT 18 2016 BY: OK, draws down in 2-5 days. 3 :1 OK 6:1 0m nTif TMT1%*pe.Qr`S►f jrAfE PVLL* 6.0 ft lu*Weierttzhe}Flsc h,&# SNVf Sr, 3 :1 OK 3.0 :1 OK Y (Y or N) OK 1.0 ft OK N (Y or N) OK Y (Y or N) OK Y (Y or N) OK Pump Out Form SW401-Wet Detention Basin-Rev.9-4118112 Parts I. & II. Design Summary, Page 2 of 2 Permit No. Jw C} 1(no 7 b "s {to be provided by DWQ) Red triangles at the upper right hand corner indicate design comments Pleasrc'omplete the yellow shaded items WA of w a r�9 0 NCDENR a ' STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, fitted out and submitted along with all of the required information. [, PROJECT INFORMATION Project name Enterprise Drive Self -Storage Contact person Branch Smith, Paramounte Engineering Phone number 910-791-6707 Date 10118/2017 Drainage area number DA-B II. DESIGN INFORMATION Site Characteristics Drainage area 116,000 ft2 Impervious area, post -development 84,500 fie % impervious 72.84 % Design rainfall depth 1.5 in Storage Volume: Non -SA Waters Minimum volume required _ 10,231 ft3 Volume provided 12,851 ft3 OK, volume provided is equal to or in excess of volume required. Storage Volume: SA Waters 1.5" runoff volume NA ft3 Pre -development 1-yr, 24-hr runoff ft3 Post -development 1-yr, 24-hr runoff ft3 Minimum volume required ft3 Volume provided ft3 " E I V E Peak Flow Calculations -' Is the pre/post control of the lyr 24hr storm peak flow required? Y (Y or N) Q ��1� OCT U 1-yr, 24-hr rainfall depth 3.7 in Rational C, pre -development scs (unitless) Rational C, post -development scs (unitless) BY; Rainfall intensity: 1-yr, 24-hr storm scs inlhr OK Pre -development 1-yr, 24-hr peak flow 20.00 ft3lsec Post -development 1-yr, 24-hr peak flow 23.00 ft3lsec PretPost 1-yr, 24-hr peak flow control 3.00 ft3lsec Elevations Temporary pool elevation 56.00 fmsl Permanent pool elevation 54.50 fmsl Si elevation (approx. at the perm. pool elevation) 54.00 fmsl Top of-Mft vegetated shelf elevation 54.50 fmsl & ">H Bottom of 1911 vegetated shelf elevation 53.50 fmsl b' 401 Sediment cleanout, top elevation (bottom of pond) 48.00 fmsl Sediment cleanout, bottom elevation 47.00 fmsl Sediment storage provided 1.00 ft Is there additional volume stored above the state -required temp. pool? Y (Y or N) Elevation of the top of the additional volume 56.0 fmsl OK Surface Areas Area, temporary pool 9,565 ft2 Area REQUIRED, permanent pool 7,308 ft2 Form SW401-Wet Detention Basin-Rev.9-4116112 Parts I. & It. Design Summary, Page 1 of 2 Permit No. (to be provided by DWQ) II. DESIGN INFORMATION SAIDA ratio 6.30 (unitless) Area PROVIDED, permanent pool, Ate,,,,_,,, 7,546 ft' OK Area, bottom of 1 Oft vegetated shelf, Abot_snea Area, sediment cleanout, top elevation (bottom of pond), Abo,-pond Volumes Volume, temporary pool Volume, permanent pool, Vwm p,,, Volume, forebay (sum of forebays if more than one forebay) Forebay % of permanent pool volume SAIDA Table Data Design TSS removal Coastal SAIDA Table Used? Mountain/Piedmont SAIDA Table Used? SAIDA ratio Average depth (used in SAIDA table): Calculation option 1 used? (See Figure 10.2b) Volume, permanent pool, VP.M_,001 Area provided, permanent pool, A,,,,,_p., Average depth calculated Average depth used in SAID& d,,, (Round to nearest 0.5ft) Calculation option 2 used? (See Figure 10-2b) Area provided, permanent pool, Awm-pooi Area, bottom of 1Oft vegetated shelf, A,,_,., Area, sediment cleanout, top elevation (bottom of pond), A„,L m 'Depth" (distance bIw bottom of 1 Oft shelf and top of sediment) Average depth calculated Average depth used in SAIDA, d,,, (Round to down to nearest 0.511) Drawdown Calculations Drawdown through orifice? Diameter of orifice (if circular) Area of orifice (if -non -circular) Coefficient of discharge (Co) Driving head (H,) Drawdown through weir? Weir type Coefficient of discharge (Q Length of weir (L) Driving head (H) Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Storage volume discharge rate (through discharge orifice or weir) Storage volume drawdown time Additional Information Vegetated side slopes Vegetated shelf slope Vegetated shelf width Length of flowpath to width ratio Length to width ratio Trash rack for overflow 8 orifice? Freeboard provided Vegetated filter provided? Recorded drainage easement provided? Capures all runoff at ultimate build -out? Drain mechanism for maintenance or emergencies is: 5,324 ft' 707 ft' 12,851 ft' OK 21,493 ft' 4,159 ft' 19.4% % OK 90 % ... . Y (Y or N) (Y or N) 6.30 (unitless) (Y or N) 21,493 ft' 7.546 ft' Need 3 ft min. (Y or N) 7,546 ft? 5,324 ft' -- 707 ft' 5.50 ft ElfilIi�SYLI 4.0 ft OK Y (YorN) 1,75 in in' 0.60 (unitless) 0.50 ft N (Y or N) (unitless) (unitless) ft ft 20.00 f131sec 23.00 ft3lsec 0.05 ft'Isec 2.50 days 3 :1 6 :1 6.0 ft 3 :1 3.0 :1 Y (YorN) 3.0 ft N (YorN) Y (Y of N) Y (YorN) Pump Out V E OCT 18 2015 BY: OK, draws down in 2-5 days. OK Insb#Geiep4shalf slope. rj' fjggzp sr. M;r-PJ "R InsuffieierR"SWlength, OK OK OK OK OK OK OK Form SW401-Wet Detention Basin-Rev.9-4118r12 Parts I. & n. Design Summary, Page 2 or 2 a O'periaton `& Mainienance A`greemen# Project Name: Project Location: Enterprise Dr. Self -Storage Enterprise Dr, Leland, Brunswick Co. { :' age Cover'P Maintenance records shall be kept on the following BMP(s). This maintenance record shall be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired, or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the pollutant removal efficiency of the BMP(s). The BMP(s) on this project include (check all that apply & a Bioretention Cell Quantity: Dry Detention Basin Quantity: Grassed Swale Quantity-. Green Roof Quantity: Infiltration Basin Quantity: Infiltration Trench Quantity: Level SpreaderNFS Quantity: Permeable Pavement Quantity: Proprietary System Quantity: Rainwater Harvesting Quantity: Sand Filter Quantity: Stormwater Wetland Quantity: Wet Detention Basin Quantity: Disconnected Impervious Area Present: User Defined BMP Present: ing O&M tables wil Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s).- Location(s): Location(s): Location(s): oe added I North and South of Transmission ROW I I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for each BMP above, and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any changes to the system or responsible party. Responsible Party: Title & Organization: Street address: City, state, zip: Phone number(s): Email: William W. Schoetteikotte Manager, WCM Enterprises, LLC 305 Colonial Dr Wilmington, NC 28403 919-880-0063 bschoettelkotte@gmail.com U Signature: Date: 9 �� I, a Notary Public for the State of K)06__ ri CQGp� 10 Ct County of >� ��� � _ do hearby certify that LL,_)-` o rn W - 50-ce-Ay- ( - personally appeared before me this - day of -e_C- ad i (o and acknowledge the due execution of the Operations and ME' �tenanceAqreement. Witness my14nd official seal, _ _ IV2.44V Ak ft4q EGEIV SEP 2 6 2016 S auk 3a, ©17 My commission expires O&M Manual 9/6/2016 Page 1 of 5 1 1 4k �ECEIVE� 5EP 2 6 2016 BY: STORM-EZ Version 1.4 O&M Manual 9/6120'16 Page 2 of 5 Wet :Detention'Pond Mai!nteriance Requirements $ The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. Important maintenance procedures: Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. _ Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the maximum extent practical. - Once a year, a dam safety expert should inspect the embankment. After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance should be kept in a known set location and must be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element:' Potential problem: How I will remediate the problem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the BMP Areas of bare soil and/or Regrade the soil if necessary to remove the gully, and then plant a erosive gullies have formed. ground cover and water until it is established. Provide lime and a one- time fertilizer application. Vegetation is too short or too Maintain vegetation at a height of approximately six inches. long. The inlet device The pipe is clogged. Unclog the pipe. Dispose of the sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to smooth it over and provide erosion swale, control devices such as reinforced turf matting or riprap to avoid future problems with erosion. Stone verge is clogged or Remove sediment and replace with clean stone. covered in sediment (if applicable). The forebay Sediment has accumulated to Search for the source of the sediment and remedy the problem if a depth greater than the possible. Remove the sediment and dispose of it in a location where original design depth for it will not cause impacts to streams or the BMP. sediment storage. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The vegetated shelf Best professional practices show that pruning is needed Prune according to best professional practices + rC EVEI �I G to maintain optimal plant health. Q SEP 2 6 2016 Jase, Plants are dead, diseased or Determine the source of the pro : soils, hydrology, etc. dying. Remedy the problem and replac nts Provide - -me fertilizer application to establish the groun cover if a soil test indicates it is necessary. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. STORM-Fl 9/6/2016 Version 1 A O&M Manual Page 3 of 5 I .. �. _1 Wet:Detention Pond Maintenance Requirements Continued I The,main treatment area Sediment has accumulated to Search for the source of the sediment and remedy the problem if a depth greater than the possible. Remove the sediment and dispose of it in a location where original design sediment it will not cause impacts to streams or the BMP. storage depth. Algal growth covers over 50% Consult a professional to remove and control the algal growth. of the area. Cattails, phragmites or other Remove the plants by wiping them with pesticide (do not spray). invasive plants cover 50% of the basin surface. The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. Evidence of muskrat or Use traps to remove muskrats and consult a professional to remove beaver activity is present. beavers. A tree has started to grow on Consult a dam safety specialist to remove the tree. the embankment. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. (if applicable) The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Department of Environment and Natural damage have occurred at the Resources Regional Office. outlet. 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. RECEIVED SEP 2 6 2016 BY: STORM-EZ 9/6/2016 Version IA O&M Manual Page 4 of 5 �h• . . �' f ' �. Wet Detention Pond Design Summary I # Wet Pond Diagram WET POND ID FOREBAY MAIN POND POND A Permanent Pool El. 53 Permanent Pool El. 53 Temporary Pool El: 54.5 Temporary Pool El: 54.5 Pretreatment other No Clean Out Depth: 4 Clean Out Depth: 7 than forebay? Sediment Removal El: 49 Sediment Removal El: 46 Has Veg. Filter? No Bottom Elevation: 48 Bottom Elevation: 45 WET POND ID FOREBAY MAIN POND POND B Permanent Pool El. 54.5 Permanent Pool El. 54.5 Temporary Pool El: 56 Temporary Pool El: 56 Pretreatment other No Clean Out Depth: 5.5 Clean Out Depth: 6.5 than forebay? Sediment Removal El: 49 Sediment Removal El: 48 Has Veg. Filter? No Bottom Elevation: 48 Bottom Elevation: 47 aet o 6 2o�e lt - gV: STORM-EZ 101412016 Version 1.4 O&M Manual Page 4 of 4 MEMORY TRANSMISSION REPORT TIME :10-24-2016 11:33 FAX NO.1 :910-350-2018 NAME FILE NO. 311 DATE 10.24 11:28 TO 97916760 DOCUMENT PAGES 8 START TIME 10.24 11:29 END TIME 10.24 11:33 PAGES SENT 8 STATUS OK % aAG ,_ ._. .�� ...� 11 ;..._. _ -l�s e•_-51 �..... is .:f'S__ _.. �_.; •'..Y_i_`I-f f. ._�.._._�. _... EROSION CONTROL AND GRADING NOTES: 1. SITE CONTRACTOR SHALL STRIP TOPSOIL AND ANY UNSUITABLE MATERIAL AND PROVIDE CUT/FILL. SEE GENERAL NOTES SHEET FOR GRADING, DRAINAGE, AND EROSION CONTROL NOTES AND REQUIREMENTS. IN ADDITION, REFERENCE TECHNICAL SPECIFICATIONS AND DETAIL SHEETS FOR MORE INFORMATION. 2. SEE GRADING AND DRAINAGE PLANS FOR FINISH GRADES AND STORM PIPE SCHEDULE. 3. CONTRACTOR SHALL COORDINATE WITH OWNER OR OWNER'S REPRESENTATIVE REGARDING THE SITE'S EXISTING GRADE. EARTHWORK ACTIVITIES MAY HAVE TAKEN PLACE AFTER THE SURVEYED TOPOGRAPHY. ASPHALT, CONCRETE, AND BUILDING PAD NOTES: 1. SITE CONTRACTOR SHALL STRIP TOPSOIL AND ANY UNSUITABLE MATERIAL AND PROVIDE CUTIFILL OPERATIONS TO PROVIDE A COMPACTED CONTROLLED SUBGRADE IN PAVEMENT AND STRUCTURAL AREAS, IN ACCORDANCE WITH ANY SUBSURFACE GEOTECHNICAL EXPLORATION REPORTS, OR GEOTECHNICAL FIELD ENGINEERING, AND/OR TECHNICAL SPECIFICATIONS. STORM DRAINAGE NOTES: 1.) DRAINAGE EASEMENT AND STORMWATER WET PONDS MAINTENANCE (INCLUDING THE STORM DRAINAGE NETWORK) IS THE RESPONSIBILITY OF THE DEVELOPER OR HOA. 2.) NO OBSTRUCTIONS ARE ALLOWED IN DRAINAGE EASEMENTS, INCLUDING FENCES. 3.) IMPERVIOUS MUST DRAIN TO THE DESIGNED STORMWATER SYSTEM UNLESS APPROVED PLANS SHOW OTHERWISE. 4.) STORM DRAINAGE STRUCTURES WITHIN TRAFFIC AREAS SHALL BE TRAFFIC RATED FOR H-20 LOADS AT A MINIMUM. 5.) CONTRACTOR SHALL ADJUST ALL FRAMES OF EX. UTILITY INFRASTRUCTURE WITHIN ASPHALT AND/OR CONCRETE AREAS TO MATCH PROPOSED GRADES. 6.) PROPOSED SPOT ELEVATIONS SHOWN IN THE PARKING LOT ARE PROPOSED EDGE OF PAVEMENT, UNLESS NOTED OTHERWISE. 7.) RIM ELEVATIONS ARE LISTED AS THE "GUTTER OF FLOWLINE ELEVATION" WITHIN A CURB INLET SECTION. THE CURB INLET RIM ELEVATION GIVEN IS 2 INCHES BELOW EDGE OF PAVEMENT (EP). FOR DROP INLETS, THE RIM ELEVATION IS LISTED AS THE CENTER OF GRATE FOR DROP INLETS. THE CONTRACTOR SHALL MAINTAIN A UNIFORM EDGE OF PAVEMENT (EP) WHEN PLACING THE STORM INLETS WITHIN THE CURB -LINE. 8.) MANHOLE RIM ELEVATION SHOWN ABOVE IS FLUSH WITH PROPOSED GRADE. CONTRACTOR SHALL PROVIDE 3" CLEARANCE ABOVE PROPOSED GRADE WHEN PLACED IN A GRASSIPERVIOUS AREA; AND A FLUSH CONDITION WITH PROPOSED PAVEMENT OR IMPERVIOUS COVER. 9.) PROPOSED BUILDINGS SHALL DIVERT ROOF DRAINAGE TO STORMWATER COLLECTION SYSTEM ONLY. SEE CIVIL OR ARCHITECTURAL DETAILS. 10.) THE CONTRACTOR SHALL USE EITHER RCP (CL. 111) OR HDPE PIPE FOR THE STORM DRAINAGE SYSTEM. IF THE CONTRACTOR CHOOSES TO USE HDPE PIPE, IT SHALL BE ADS N-12 HP STORM PIPE OR APPROVED EQUAL AND SHALL BE INSTALLED TO MANUFACTURER SPECIFICATIONS. AS -BUILT SURVEY NOTE: 1. THE CONTRACTOR WILL EMPLOY A LAND SURVEYOR LICENSED IN THE STATE OF NORTH CAROLINA TO PROVIDE ACCURATE REPRODUCIBLE AS -BUILT DRAWINGS OF THE WET DETENTION BASINS AND INFILTRATION BASIN TO THE OWNER UPON COMPLETION OF CONSTRUCTION. UPON CHECKING BY THE OWNER ANY DISCREPANCIES WILL BE INDICATED, THEN THESE PLANS SHALL BE RETURNED TO THE CONTRACTOR FOR CORRECTION PRIOR TO FINAL PAYMENT AND FINAL INSPECTION. WETLAND DELINEATION NOTE: 1. LAND MANAGEMENT GROUP OF WILMINGTON FLAGGED WETLANDS ON THE SUBJECT PROPERTY AND PROVIDED A PRELIMINARY WETLAND SKETCH. THE DELINEATION SHOWN HEREIN REFLECTS THE SKETCH MAP. PARAMOUNTE ENGINEERING, INC. WILL SURVEY THE WETLAND FLAGS AND LMG WILL SUBSEQUENTLY FILE FOR A JURISDICTIONAL DETERMINATION AND 401/404 USACE PERMITTING. STORM DRAINAGE SCHEDULE: TRADE STREET NE 80' PUBLIC R/W EG�0.97 - EG=60 -- OHE EG=59.77 BRUNSWICK COUNTY COMMUNITY COLLEGE PIN#2188-09-06-6837 DB 1241, PG 266 MB U; PG 235 I II'�• • RIM=60.50 RIM=60.40 60 _ 1-106 \ cl 6 / 56 IPF FM FAA FM M _ - F[G�-� "��Isfi - -- fi 1-- _. - _.._. __._ _.__ �.,..,_. _ - Wiz- _ - - _ _.._ - .__..__ ¢ _ - POND A ._.._ _..._ � Upstream Node Downstream Node Upstream Invert Downstream Invert Diameter (In) Pipe Length [ft] Slope (%) Upstream Rim Elev D1101 E5100 48.50 48.00 36 51.9 0.96% 57.35 D1102 DI101 53.20 52.50 30 1 100.1 0.70% 58.02 DI103 DI102 53.70 53.20 30 1 112.6 0,44% 58.55 DI104 DI103 54.50 53.70 30 1 219.0 0.37% 59.57 DI105 DI104 55.30 54.50 24 157.7 0.51% 60.30 DI106 DI105 55.80 55.30 24 112.5 0.44% 63.40 DI107 01106 56.50 55.80 24 140.0 0.50% 60.50 DI 201 ES 200 49.00 48.00 24 54.8 1.82% 57,39 DI202 DI201 52.50 52.00 18 113.6 0.44% 56.86 DI203 DI202 53.10 52.50 15 148.8 0.40% 56.23 DI 304 E5 300 51.00 50.00 36 58.2 1.72% 59.50 DI301 DI304 54.80 54.50 30 52.8 0.57% 59.80 DI305 DI304 55.30 54.50 30 51.5 1.55% 59.25 DI306 DI305 56.10 55.30 24 124.7 0.64% 60.02 DI302 DI301 56.00 54.80 18 116.4 1.03% 60.00 DI307 DI306 56.50 56.10 18 81.5 0.49% 60.20 DI303 DI302 1 56.50 56.00 18 105.0 0.48% 60.36 -... _ _ - __ _ - - - - _... --..._ _ .._._ __ __......_ ga. FOREBAY ._... �.._�.; �.�� _ -... _ �.�. - - _ .._...........- -- s 60 sa - ..._ - _ .. --so -- - - _ __ _ - ......._ _ 15 RCP POND B OUTFACE _.. - - - --ANQKhW IAi_KJUN HlkjliWAY - POND A EMERGENCY RIP -RAP SPILLWAY U.S. 74-76W (EAST BOUND)- - - - W w W W W W w w W W w W w W W W W w w w W E NOTATION: Cl = CURB INLET DI = DROP INLET CO - CLEANOUT DDI = DOUBLE DROP INLET MH = STORM DRAIN MANHOLE RD = ROOD DRAIN CLEANOUT FIFE = FINISHED FLOOR ELEVATION BPE = BUILDING PAD ELEVATION LEGEND: 6 ... _ 29 EG=25.05 PG=25,05 -� EP=25.05 -� SW=25.05­,,,` TC=25.05 - LOQ D I-102 EXISTING CONTOUR PROPOSED CONTOUR EXISTING SPOT ELEVATION PROPOSED EDGE OF PAVEMENT PROPOSED EDGE OF PAVEMENT PROPOSED SIDEWALK ELEVATION PROPOSED TOP OF CURB ELEVATION INLET PROTECTION LIMITS OF DISTURBANCE SILT FENCE DRAINAGE FLOW PATH DRAINAGE INLET LABEL Z Z n0 I7m �w v^ � N O EG=56.44 j z P. PG=56.66 EG=56.05 00 `) I V N � IC � 0 ATED SHELF Lt� f, ° U ETAILS) - �;x O ° A OUTLET STRUCTURE e )ETAILS) P POND A OUTFALL 4 C/] JT=53.0 FM F -- -W _. W W - -w - w 1— 24 RCP DMH INV(W)=52.67 ! INV(E)=52.61 4 H _ CAt�+� ^w^ ECEIVE z H GRAPHIC SCALE 0 25 50 100 200 SCALE: 1 "=50' 1 E i E z O w tr 0 M J O J LLJ OQ W � N U �: 0 Z Lu 12¢O Z � o CL 0 - LO LL O U c� z to J U wo. Z C00 N� �D 2 4-4 O �� �-1 ) p U w UZ� Q N p �- Z �z o �z � W U C� z 0 v) U 1 � H H � �WW H � P4P-.4U �T7 Fir �I z z c) � WW� Z6 L0» 0)~ iL a. Q Q Z O o0 F�gzo - UI 0 �'� z_ aLuo a -13 W20 W � �ZZY w W-A03: ul C9 CJ d oILMIr 0 dv�io � SEAL ���o W l 111 filii \ �N CARD( /'/. _SSIpti 419 - `0�34354 - 9 �°•. F^rGI tSE�cQ ° A" ',IFS ••••....•••'•g��.• 8RANrx.\ �. 10/18/16 C-3,91 PEI JOB#: 13119.PE .il 1 j ',. .I S -•yi{' •' s� r:' _T 7; '" +, T. 5' -�`r r 'T i „'' 3-s.:r;'F i^T f s'14 ! � ! {' � � � J I. fi � I ,�It• ors. ,. l!„ N... i� I cn C7 m RISE DR -SR 17la .._.: T V m ; yyO O V J 0 33 (OWE) ON) 6I,06 £S abN m ���� //// y PROJECT STATUS CONCEPTUALLAYOUT: �/�/� DRAINAGE AREA MAP CLIENT INFORMATION: REVISIONS: PARAMOUNT Q �``�.aC• ° i r °°°�FINAL o PRELIMINARY LAYOUT: DESIGN: lL}} E .'� o o°°�y' —y:z RELEASED FORCONST: E ^' G N Fz N G. i N �. WCM PROPERTIES LLC DRAWING INFORMATION w o : o � ENTERPRISE DR SELF -STORAGE 122 Cinema Drive 305 COLONIAL DRIVE m =� •. - =,,�� •. a� ,� ��!iy °°°• ` DATE: 9116116 SCALE: 1°=50' ENTERPRISE DRIVE LELAND Wilmin on North Carolina 28403 W I LM I NGTON NC 28403 DESIGNED: RPB/JBS 7 (910) 791�-670'7 {O) (910} 791-G760 (� CHECKED: RPgRPB TOWN CREEK, BRUNSWICK CO., NC NC License #: C-2846 I WET DETENTION 1 SEDIMENT BASIN NOTES: 1. THE PROPOSED WET DETENTION POND SHALL BE USED DURING CONSTRUCTION AS A SEDIMENT BASIN UNTIL THE SITE IS FULLY STABILIZED. 2. THE CONTRACTOR SHALL CONSTRUCT THE SEDIMENT BASIN TO THE PROPOSED DEPTHS OF THE WET DETENTION POND AS ILLUSTRATED ON THE PLANS AND INSTALL THE PROPOSED OUTLET STRUCTURE. ONCE THE OUTLET STRUCTURE IS IN PLACE, THE CONTRACTOR SHALL IMMEDIATELY INSTALL THE SKIMMER TO THE PERMANENT POOL DRAWDOWN ORIFICE. 3. ONCE THE SITE IS STABILIZED THE CONTRACTOR SHALL REMOVE ALL SEDIMENT FROM THE BASIN AND ESTABLISH THE FINISHED GRADES OF THE PROPOSED WET DETENTION POND. 4. REFER TO THE SEDIMENT BASIN DETAIL FOR THE REQUIRED SEDIMENT REMOVAL ELEVATIONS DURING CONSTRUCTION. WET POND SHELF PLANTING NOTES: CONTRACTOR TO INSTALL ON THE 6:1 SLOPED SHELF, EQUAL NUMBERS OF EACH OF THE LISTED SUITABLE PLANTS. DURING INSTALLATION, GROUP SIMILAR SPECIES OF PLANTS TOGETHER. INSTALL PLANTS 24" O.G. IN A CHECKERBOARD PATTERN. SHELF SUITABLE PLANTS: PICKERELWEED (PONTEDERIA CORBATA) DUCK POTATO (SAGGITARIA LATIFOLIA AND SAGGITARIA CARDINALIS) SWAMP ROSE (HIBISCUS MOSHEUTOS) BLUE FLAG (IRIS VIRGINICA) CARDINAL FLOWER (LOBELIA CARDINALIS) WET POND STABILIZATION AND LANDSCAPING: SEE LANDSCAPE SHEET L-1.0 SEE PLANS FOR INLET PIPE LOCATIONS & INVERTS TOP EL. = 56.00 3 3 i 1 20 FT 1 SPWY EL. = 55.00 -_i E RIP -RAP EMERGENCY SPILLWAY* -_ 12" NCDOT CLASS B RIP -RAP (d50 = 8") & 4" NCDOT NO. 57 STONE BEDDING WRAPPED WITH NON -WOVEN FILTER FABRIC (SI GEOTEX 801 OR APPROVED EQUAL) *EXTEND RIP RAP DOWN TO NATURAL GRADE POND EMERGENCY SPILLWAY NOT TO SCALE WET DETENTION 1 SEDIMENT BASIN NOTES: 1. THE PROPOSED WET DETENTION POND SHALL BE USED DURING CONSTRUCTION AS A SEDIMENT BASIN UNTIL THE SITE IS FULLY STABILIZED. 2. THE CONTRACTOR SHALL CONSTRUCT THE SEDIMENT BASIN TO THE PROPOSED DEPTHS OF THE WET DETENTION POND AS ILLUSTRATED ON THE PLANS AND INSTALL THE PROPOSED OUTLET STRUCTURE. ONCE THE OUTLET STRUCTURE IS IN PLACE, THE CONTRACTOR SHALL IMMEDIATELY INSTALL THE SKIMMER TO THE PERMANENT POOL DRAWDOWN ORIFICE. 3. ONCE THE SITE IS STABILIZED THE CONTRACTOR SHALL REMOVE ALL SEDIMENT FROM THE BASIN AND ESTABLISH THE FINISHED GRADES OF THE PROPOSED WET DETENTION POND. 4. REFER TO THE SEDIMENT BASIN DETAIL FOR THE REQUIRED SEDIMENT REMOVAL ELEVATIONS DURING CONSTRUCTION. Know what's below. Call before you dig. 3 1 SEE PLANS FOR INLET PIPE LOCATIONS r3< INVERTS RISER EL. = 56.00 PERMANENT POOL = 54.50 2" SCH. 40 PVC PIPE PENETRATION WITH 1.75" DRILLED ORIFICE IN CAP. 2.50' FOREBAY BERM {{ ' 1 FRONT VIEW PLANTED 6:1 SLOPE SEELANDSCAPE NOTES THIS SHEET BOTTOM OF SHELF ELEV. 53.50 RISER EL. = 54.50 PERMANENT POOL= 53.00 ` 2" SCH. 40 PVC PIPE PENETRATION WET POND SHELF PLANTING NOTES: CONTRACTOR TO INSTALL ON THE 6:1 SLOPED SHELF, EQUAL NUMBERS OF EACH OF THE LISTED SUITABLE PLANTS. DURING INSTALLATION, GROUP SIMILAR SPECIES OF PLANTS TOGETHER. INSTALL PLANTS 24" O.C. IN A CHECKERBOARD PATTERN. SHELF SUITABLE PLANTS: PICKERELWEED (PONTEDERIA CORDATA) DUCK POTATO (SAGGITARIA LATIFOLIA AND SAGGITARIA CARDINALIS) SWAMP ROSE (HIBISCUS MOSHEUTOS) BLUE FLAG (IRIS VIRGINICA) CARDINAL FLOWER (LOBELIA CARDINALIS) WET POND STABILIZATION AND LANDSCAPING: SEE LANDSCAPE SHEET L-1.0 .role 01RIOTLI Z �-J FRONT VIEW RISER EL. = 56.00 PERMANENT POOL = 54.50 2" SCH. 40 PVC PIPE TURNDOWN WITH 1.75" DRILLED ORIFICE IN CAP GALVANIZED BAR GRATING 1" x 118" BEARING BARS. FASTEN WITH J-CLIPS, ATTACH TO A 1 114" x 1 114" x 114" GALVANIZED ANGLE FRAME. MORTOR FRAME TO TOP OF OUTLET STRUCTURE. OUTLET BARREL (1) 15" RCP CLASS III < 551 LF @ 0.27% - - - - INV=54.50 MINA -FT SUMP 5'x5' I.D. RISER OPENING SIDE VIEW (RISER O.D.+6") x 6" EXTENDED BASE POND B OUTLET STRUCTURE DETAIL NOT TO SCALE RISER EL. = 54.50 PERMANENT POOL = 53.00 2" SCH. 40 PVC J PIPE TURNDOWN 5'x5' I.D. RISER OPENING FES OUT=53.00 SEE PLAN AND DETAILS FOR RIP -RAP APRON. NOTE: 1. FOR MAINTENANCE EFFORTS OR IN CASE OF EMERGENCY, STORMWATER STORED BELOW PERMANENT POOL SHALL BE PUMPED. 2. ALL STORMWATER (INCLUDING ROOF DRAINAGE) MUST BE CONVEYED TO THE STORMWATER BMP. 'll�P."i►i W OUTLET BARREL SEE SECTION ABOVE OUTLET STRUCTURE DETAIL SEE SECTION ABOVE GALVANIZED BAR GRATING 1" x 118" BEARING BARS. FASTEN WITH J-CLIPS, ATTACH TO A 1 114" x 1 114" x 114" GALVANIZED ANGLE FRAME. MORTOR FRAME TO TOP OF OUTLET STRUCTURE. _ OUTLET BARREL (1) 15" RCP CLASS III < INV=53.00 MINA -FT SUMP SIDE VIEW (RISER O.D.+6") x 6" EXTENDED BASE POND A OUTLET STRUCTURE DETAIL NOT TO SCALE PLANTED 6:1 SLOPE SEE LANDSCAPE NOTES THIS SHEET 1.5" WSEL = 54.50 (TEMP. POOL VOLUME) FOREBAY BERN r - 6' PERMANENT POOL = 53.00 I - MAIN STORAGE POND 1Z 2 3 Go - BOTTOM OF SHELF � ELEV. HELL � ���� t1 � FTC POND BOTTOM ELEV. 45.0 1 = W 111 YI 1 I. 11 I .. WET RETENTION POND A (PHASE I EC SEDIMENT BASIN) NOT TO SCALE FES OUT=53.00 SEE PLAN AND DETAILS FOR RIP -RAP APRON. NOTE: 1. FOR MAINTENANCE EFFORTS OR IN CASE OF EMERGENCY, STORMWATER STORED BELOW PERMANENT POOL SHALL BE PUMPED. 2. ALL STORMWATER (INCLUDING ROOF DRAINAGE) MUST BE CONVEYED TO THE STORMWATER BMP. 10' t TOP OF POND ELEV. 56.0 - 3 3 - 1 EM. SPWY _V. 55.00 OUTLET BARREL SEE SECTION ABOVE OUTLET STRUCTURE DETAIL SEE SECTICN ABOVE ECEIVE Z O U) W W U M °J O J W 't W M CV U I•--_ Z ¢ 0- O Z � O 0 � �OZ 0 - o U Lr) z_ co r Z W J U W0- Z O r- _ 00 N t` Z . !�:j C, t� N _ Qf I C� W oo ci U _Q 0 O Q U � �ZU CHI W � �T7 ICI C/a P � o z� C% WWO �o!5mma. Z am`m O X0� Q U Q z 00 0 O LL L) x Z W aZ UJ Z w o O U JJW Uj ll.iWiU-'-' ¢U d 0aF� ❑ OUd0000i SEAL CARD( L 034354 •ENGINE \ `_ 10/06/16 C-402 PEI JOB#: 13119.PE _� - _. _ _ _ _._ �I ' �. �' - _ T.r •!"'. a•f T:"'i f. T'[C:�' -T•,. -.. ENTERPRISE DR SELF STORAGE BRUNSWICK COUNTY, NORTH CAROL.INA STORMWATER AND EROSION CONTROL NARRATIVE Prepared for: WCM Enterprises, LLC 305 Colonial Drive Wilmington, NC 28403 Prepared by: PAaA1\4"U-T'--,TTE L " C-. 1 N L- F= 11 1 " G. 1 N C. 122 Cinema DriNre Wilmington, NC 28403 (910) 791-6707 NC License #: C-2846 Project # 13119.PF September 2016 Revised October 2016 ECEIVE OCT 18 20''3 SY: CARO :cL SEAL 034354 -4/G I QRAN��'���� ENTERPRISE DR SELF STORAGE BRUNSWICK COUNTY, NORTH CAROLINA Table of Contents PROJECTNARRATIVE' PROPOSED EROSION CONTROL I`-I.1 ASUR.I S PROPOSED STORNIVIATE'R CONTROL NIEASURES A'I"FACHMENTS: ProPerry Deed Soils Map USGS Nhp Storrnwater/F-rosion Control CalClllatlons PROJECT NARRATIVE WCI.1 Enterprises is developing a proposed self -storage facility located on US 74/76 at the intersection of i---nterprise Drive, which is Leland Industrial Park or Windsor Commercial Park. It is further identified by Brunswick County PIN #: 218809062699, Parcel ID 0280000842 (10.70+/- ac), and coordinates: Lat: 34' 15' 33.39"N, Leung: 78' 4' 22.94" W. The site is adjoined by US 74/76 to the south, a Duke Energy substation and shop to the west, Isnterprise Drive to the east, and Trade Street to the North cleared property except the east, which is residential use. A Duke Energy "Transmission 70-ft 1 0\V (Sutton Line 230Kv South) runs across the property. The current site consists of 0-1% sloped terrain xvith part woods. The existing soils on the site are predominantly Leon fine sand (Lo) according to the Well Soil Sun'e�' of NRCS. According to the attached USGS map, the site drains to Banton Branch, which is classified as C; SW in Cape hear River 13asin. PROPOSED EROSION CONTROL MEASURES A. TEMPORARY CONSTRUCTION ENTRANCE (DENR PRACTICE 6.06) TNvo temporary gravel constniction entrances are installed on the two proposed state road driveways. B. TEMPORARY SILT (SEDIMENT) FENCE (DENR PRACTICE 6.62) Temporary silt fence will be used to control sediment runoff from fill areas, and prevent antiy construction sediment or trash from leaving the site. C. RIP -RAP OUTLET PROTECTION (DENR PRACTICE 6.41) One outlet protection is shown within the sediment basin (future wet detention basin) and will prevent scour and erosion from Nvashing the inside of the storage basin as Nvell as future vet pond slopes. D. TEMPORARY SKIMMER SEDIMENT BASIN (DENR PRACTICE 6.64) Two sediment basins will be used to control all disturbed area sediment -runoff with a skimmer dewatering device attached to the outlet for the future permanent wet pond. *Note: baffles are not included within the sediment basin details since water will be retained within the basin therefore submerging the baffles. An emergency overflow spillway is designed in accordance to the wet pond design. E. TEMPORARY INLET PROTECTION (DENR PRACTICE 6.51) Inlet protections arc shown for most of the storm drainage inlets and is intended to be installed after construction of the inlets unless the ground surrounding the inlets is stabilized with pavement or vegetation. Otherwise, the details indicated prevent most of the sediment -runoff from depositing and potentially clogging the proposed storm pipe networks. F. TEMPORARY TREE PROTECTION FENCING (DENR PRACTICE 6.05) 'Temporary tree protection fencing is shown for the significant trees CEWE OCT 18 201B BY:� PROPOSED STORMWATER CONTROL MEASURES Two wet retention ponds will be used to treat the 1.5-inch rainfall -runoff per NCDF_Q State Stornixvater Coastal Rules and provide peak discharge control below pre -developed runoff for the I -jar and 10-yr design storms per the Brunswick Count), Storm water Ordinance. The wet pond was calculated utilizing SCS 'iR-20 hydrograph routing simulations through use of I-IydroCAD modeling software. The treatment requirements for the 1.5-inch rainfall runoff were calculated using the Simple Method Runoff Calculation and the 90% TSS removal requirements of a vet detention pond as described in the NCIDiuQ Stormwater BMP Manual. The seasonal high water table for this project was determined using good engineering judgment as referenced on pages 10-9 and 10-10 of the NCDEQ Stormwater BIVIP Manual. "Therefore, the normal pool of the Pond A was determined from the water level and the NCDOT ditch invert. Pond A permanent pool matches the NCDOT ditch invert and corresponds to the seasonal water level observed in the ditch. Pond B's normal pool was determined from the adjacent ditch water level and invert. Based on survey, the invert is about elevation 54.00 and water level was observed at the inert; therefore, the permanent pool of Pond B was set to maximum 54.50. both of these ponds are set above or equal to the ditch groundwater thereby maintaining positive hydraulic conductivity. Storm conveyance calculations have been performed utilizing the Rational Method for the 10-yr and 100-yr design storms to check for flood control within the pipe system. The hydraulic grade line (I-IGL) calculations were performed through the Carlson Drainage Software using 1-II-C22 I-nergy-Loss Method. The published Brunswick County 1DF 'fables have been used for the design storms. ECEBI F " OCT 18 Z 1u 4 t:XCt:e Tax n@t o ° FILDATEOR REGISTRATION TIM 98 MAY 20 AN 9: 33 ROBERT J. &(IBINSON REGISTER OF DEEDS BRUNSWICK COUNTY. liC. M., ,rdn)4 Tittle. JLl ..► and 1'dt;r Tax 1A.1 \n. Parc,l l,lentir,er tin. See attached Exhibit "Are Verified by ['„note on tkte d+r of 19 by o° ns Mail after recording to 305 Culu ] 1)r11P, I ] u, tiC _8:.U3-1207 TO 0 ° This instrument wus prepared by lingua , Ill I I , Jouus. :,ash S Lynch, L. L. P. Brief dearriplion for the Intiex Ai] property owned in 8runsuick Cou ity NOR,r -I C11I OLINA DEED THIS DKED made this duy of April El 98 . I,y- and hetweell GRANTOR IICM L•_NTERPRISES. A NORTH CAROL.IHA CENERAL PARTNERSHIP 'Tl;t:v� ��► c �. CASH GRANTF;E WCH ENTF.RPRISF.S. C A NORTH CAROLINA (F�}4 "'� �4131!.ITY COMPAk% �O ° 11J1 u t:nirr In appropriate black for rarh party: mmr, addrr,%. and. It approptiate. character ut eotlty, r.y. rurpuration or partnmhip. The deaicnution Grantor and Grantee as u.ed herein shalt include ,aid i-al-Lies. their brim. stmee.snr.•,, and :,.:it a+, and shalt include singular, plural, masculine, femtnkite ur nrnler as ir,li iced by context. W1TNESSETII, that the Grantor, f„r a ralttahle c,.nxideration quid by the Grattlee, the receipt of wltickr is her..-hy- aekn,mledged, has and hy- these prescntS doe grant, h:,rgain..;01 :,nd Concey- unto the Grantt:e ill fee simple, all that .•retain L,.t or l,arM Of laud .ituated in the City of Tau nnhil,, Brunswick ('uunlp, forth ('arolia:, Will 111„rc 1,:u1i, ut,rly' tEorrril,ed a. f+.11,.t::: 1 Being all of that property described In a deed recorded In Book„age 37 of the Brunswick County Registry. �\ 1� IT tU1 V Sting all of that property de ri ,Zf��io ceOds on In Book 945 pages 236, 240,244,248 nd 2� v w ck County Registry_ n uuU ILI Being all of tiLvi�qv 3escribed in the follloving deed recorded in Book 1067, page 230 of the runswiek County Registry. LY Being all of that property described in the following deed recorded in Book 1091. page 750 of the Brunswick County Registry. V Being all of that property described In n deed recorded in Book 1189. page 0830 of the Brunswick County Registry_ V1 Being all of that property described in a deed recorded In Book 652, page 918 of the Brunswick County Registry. VI1 no Using; all of Hutt prnperty d wcrlTnt� �� f-i-Jirfl 7f7 Book 1036, palc 1041 of the Brunswick County Re stryO There is exclu d$ operatlnn of this deed and the Grantor does not purport to convey hereby a3Ty portion or part of Lite above described property already conveyed by the Grantor by deeds duly recorded in the Brunswick County Registry prior to the date of Elie recording; of this; deedo it being the intent of this conveyance and the Grantor dnes hereby convey to the Grantee all property located within the boundaries: of Brunswick County, North Carolina. that is now owned by the Grantor. The pri,perty herL•telab vc described wad acquird•d by Grantur br irt.lrunwza rc•r,.rdrd in (See Ahuve) A nrrp .Awtl ing lite :rbure dr-.eribell prnpd•rly i.c rea—rdrd ill fiat 11.u,k pa);e TIP MACH ANIP TO I101.11 the afures:dd gut r.r parcel of 1:.nll altll all g.rivilrtira atld :%ppurI A- Iwt•; therein helwlging to like Grantee is fcc ainlple. And ill.- Giarilur r,..avlants with iht• I;r:uNrr•. 111:11 I:rafltur i. Srizr.l �fj-�-Ir� (� •mhJ.�r•.4lL0yl m •. ham Ibe !•iFh[ lu r..nrey' 1be .:.ner iillf.•e ain.plt•, shot lit le in Illarl;elable '.hd free 1 r :Lk_hl 1•T, :rod Ilt::1 I;rautr.r kill W.'.0" tilt and defend the title . g; kilest the I:na'fuI t lai ti of a l�y 'ryy1. 'I. t yIt r the rsr. p[i..u. h.•r.•ivaftd•r .: Glted. Title 1n the prnperty Ila!rcilltr b..vc dotbcd i�[}�,q 1,i S fe. lu.a'rnF c'rri.l lr.u-: 1. The lien of l99 c valorem taxes due to Brunswick County_ 2. Rights of way and easements for public utilities granted by the Crantor and previous owners in the chain of title. 3. Covenants and Restrictions affecting; tha use and enjoyment of the property placed on the property by the Grantor and previous owners in the chain of title. 4_ All matters that would be revealed by an on the spot inspection of the property. IN N7r Nl]!! NlikkIara'. the a: rJr•1..r I..♦ Lrr,uuN. .,I hb h.nd+nd .r+t...r ,t . �.r•o.—, h+.. +rd llm n..lrun....t lu he utnrd V Its rwpura/r none bf n. Arr17 aull.url1. ul hr rr. and ... —1 1.. nr hrrrunt.. afh.rd rn +uer...r... .-1 ... 11.,ud .�f u.. er r..r., Ihr d+y and )gar lual at..%, an I Ira. r YCH Eh7ERPRISES_ A aft CARQI.1N4 c�1:A1.P l l'url•ur.tr .sa.r! GEN£RAI. PARTN;Tl6 u7: .. tSY' f71 '-- Ld�l�` la/atl rre..drnt 1 {11 �.fjk ii NE. 1I1. GeiERA1. PARTNER . ,,`',aylt�•r��H`l1frll�,l .hrr rrlarY td'ury.uulr tir+n =. `,, ��� 11•lY aflw �,,' Z�4f �r'i..an•• • •'T.j/i4 ''� ••nr rrl t•..ItuLl�w, 1QCCJ C7 1\VL-P. 1. a v tar7 Pamir ..r a.. r..aatt and at.le .fw—Akd, .rrl.f. ll..r u- CARTER HE:BANi;, 111, A CEHERAI__PARTHER OF. YCM ENTERPRISES, A NC GE:NERAI..PARTNFRSHIP- rl • �� 4a ��V ti r yrr,r.asll7 .Npr.trd urr..re n.r !hh d.) .hd a.►n—l.do�d .t.t ....anus 1113.r l.-rrCu.a.r tn\Iruraenl- W tat.. gar �,•' • r ;i hand and uftuta[ tamp oe ara [. 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([ 'This Insirtsulc m was filed fur ltcgistralion on this Day of lr�lrj , 191K, in the (lank ;Ind P.ige s.hriwn on lite First Page: helcuf. 6tr.r+•d RnrlElt TJ. 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'-1l�� � 1•I 1 912&2016 Corporations Division Click Here To: North Carolina Elaine F. Marshall DEPARTMENT OF THE Secretary SECRETARY OF STATE PO Box 29622 Raleigh, NC 27626-0622 (919)807-2400 View Document Filings File an Annual Report Amend a Previous Annual Report Print a Pre -Populated Annual Report form Corporate Names Legal: WCM Enterprises, LLC Limited Liability Company Information Sosid: Status: Annual Report Status: Citizenship: Date Formed: Fiscal Month: State of Incorporation Registered Agent: Corporate Addresses 0446516 Current -Active Current Domestic 1/611998 December NC Schoettelkotte, William W Account Login Register Reg Office: 2912 Hydrangea PI Wilmington, NC 28403 Reg Mailing: 2912 Hydrangea PI Wilmington, NC 28403 Mailing: 305 Colonial Dr Wilmington, NC 28403 Principal Office: 305 Colonial Dr Wilmington, NC 28403 Company Officials All LLCs are managed by their managers pursuant to N.C.G.S. 57D-3-20 Member: Harry D Atwood PO Box 1062 Dayton VA 22821 Member: Roxana Mebane Atwood 1236 Glenside Drive Harrisburg VA 22801 Member: R Mebane Atwood Boyd 226 Colonial Drive Wilmington NC 28403 Member: Pauline M Endo 7414 Lucky Fish Lane Wilmington NC 28411 Member: Pauline M Endo 7414 Lucky Fish Lane Wilmington NC 28411 Member: Tetsuhiko Endo 7414 Lucky Fish Lane httpsalwww.so5nc.gov/SearctVprofcorp/4625654 112 A 912812p16 -• Wilmington NC 28411 Member: Tomohiko Endo 1338 2nd Ave, Apt 4A New York NY 10021 Member: Elizabeth M Farmer 160 Huntley Place Charlotte NC 28207 Member: Susan M Franco 3901 N Stratford Drive Atlanta GA 30342 Co Manager: W Carter Mebane , III 305 Colonial Drive Wilmington NC 28403 Manager: W Carter Mebane , III 305 Colonial Dr Wilmington NC 28403 Member: William C Mebane 7465 Thais Trail Wilmington NC 28403 Member: William C Mebane , IV 305 Colonial Dr Wilmington NC 28403 Corporations Division Member: Roxana Mebane Atwood Rev Trust U/A 2/23198 1236 Glenside Drive Harrisonburg VA 22801 Member: Patricia M Schoettelkotte 2912 Hydrangea PI Wilmington NC 28403 Member: William W Schoettelkotte 2912 Hydrangea Dr. Wilmington NC 28403 https:l/www.sosnc.gov/SearctVprofcorp/4625654 212 ra Enterprise Dr. Site ! ' i r Leland Industrial Park � ` � O r ' Op DO r: + "� • . 40 y IL w `*fk4 t''.1 �♦ a A.M. w • Legend Enterprise Self -Storage • Leland • 4 Hydrologic Soil Group -Brunswick County, North Carolina Hydrologic Soil Group Hydrologic Soil Group— Summary by Map [snit — Brunswick County, North Carolina (NC019) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI Lo Leon fine sand j AID Totals for Area of Interest 10.5 10.5 100.0% 100.0% Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long -duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (AID, BID, and CID). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink -swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (AID, BID, or CID), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff., None Specified Tie -break Rule: Higher USDA Natural Resources Web Soil Survey Conservation Service National Cooperative Soil Survey 2/1312013 Page 3of3 Hydrologic Soil Group —Brunswick County, North Carolina MAP LEGEND MAP INFORMATION Area of Interest (A01) Map Scale: 1'2,020 if printed on A size (8.5" x 11") sheet, Area of Interest (AOl) The soil surveys that comprise your ADi were mapped at 1:24,000. Soils Soil Map Units Warning: Soil Map may not be valid at this scale. Soil Ratings Enlargement of maps beyond the scale of mapping can cause 0 A i misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting [] AID soils that could have been shown at a more detailed scale. 0 B Please rely on the bar scale on each map sheet for accurate map 0 BID measurements. 0 C Source of Map: Natural Resources Conservation Service [] C/D Web Soil Survey URL: http:/lwebsoilsurvey.nres.usda.gov Coordinate System: UTM Zone 17N NAD83 Q D This product is generated from the USDA-NRCS certified data as of Not rated or not available the version date(s) listed below. Political Features Soil Survey Area: Brunswick County, North Carolina p Cilies Survey Area Data: Version 14, Jun 15, 2012 Water Features Date(s) aerial images were photographed: 712/2005 Streams and Canals The orthophoto or other base map on which the soil lines were Transportation compiled and digitized probably differs from the background +++ Raifs imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Interstate Highways US Routes Major Roads Local Roads , Natural Resources Web Soil Survey 2/13/2013 0111111111111111 Conservation Service National Cooperative Soil Survey Page 2 of 3 34' 15 28' 769360 768400 769440 A Hydrologic Soil Group --Brunswick County, North Carolina 769520 N Msp Srsle, 1:2,030 if ported on A size (8.5" x 1f") sheet N McSers m 0 25 50 100 150 A F8el 0 100 200 400 600 USDA Natural Resources Web Soil Survey Conservation Service National Cooperative Soil Survey 34` 15 37 34.15' 28" N v n 2/13/2013 Page 1 of 3 Enterprise Dr Self Storage Pond A NCDEQ Wet Retention Basin Requirements Objective: Design a wet retention basin with the following characteristics: a permanent water pool depth between 3- and 6-feet, a surface area that meets TSS removal requirements (values set by NCDEQ and included here), a forebay that is approximately 20% of the total pond volume, a temporary water pool sized to detain the initial 1.5 inch of rainfall runoff, an outlet device that drains the temporary water pool within 2-5 days, and a length -to -width ratio of approximately 3:1. Step 1: Determine the surface area required for 90% TSS removal Post -Development Conditions Total Drainage Area 4.75 ACRE Value from CAD Impervious Drainage Area 3.13 ACRE Value from CAD Impervious Cover 65.9% Impervious Cover=(Impervious Drainage Area)/(Total Drainage Area) *100% Elevation of Permanent Pool Surface 53.0 FT Value selected by designer Avg. Depth of Permanent Pool 4.6 FT Value from Avg. Depth Calculation Option 2 Elevation of Wet Detention Pond Bottom 45.0 FT (Bottom Elevation)=(Permanent Pool SurfaceElevation)-(Depth of Permanent Pool) Approximate Pond Length 223 FT Value from CAD A roximate Pond Width 77 FT Value from CAD Len th:Widih Ratio 3:1 Ratio= Len th Width :1 Required SA/DA Ratio for 90% TSS Removal 5.22 Value from chart. Reference: 90% TSS Removal Required Permanent Pool Surface Area 10,795 SF Required Surface Area=(Required SAIDA Ratio)*(Total Drainage Area) Provided Permanent Pool Surface Area 12,273 SF From stage -storage calculations Average Depth Calculation: (option 2 per Errata) Pond #1 Asotmm shert = 8,459 sf main+forebay Asottom pond = 2,079 sf main excluding sed storage Ap, po.,= 12,173 sf main+forebay Depth = 6.0 ft Bottom of shelf to sed storage _ ft Based on 6-ft shelf (0.50 not 0.2, SA/DA 5.22 Step 2: Determine the 1.5-inch runoff elevation within the wet detention pond. Runoff Coefficient, Rv 0.643 IN/IN Rv=0.05+0.009*(% Impervious) Required 1.5" Runoff Volume 16,622 CF 1.5" Runoff Volume=1.5 inch*Rv*1 foot/12 (Volume of Temporary Pool) inch '(Total Drainage Area) Permanent Pool Volume 38,536 CF Value from stage -storage calculations (cumulative pond volume at permanent pool elevation) Total Volume to be Controlled 55,158 CF Total Volume to be Controlled=(Volume Below Permanent Poo!) + 1.5" Runoff Volume Storage Elevation at Required Volume 54.25 FT Value is interpolation based upon stage -storage e Elevation Provided 0 3a: Calculate the required fore&ry volurf PPool Volume Required Forebay Volume 54.50 FT Value chosen by designer 18-22% ofperm. 38,536 CF 7,707 CF and compare to the forebay volume Total PPool Volume Forebay Volume=(Total Pond Volume) *20% Provided Forebay Volume 7,735 CF Value from stage -storage calculations Provided Forebay Volume:Total Pond Volume 20.1% (Provided Forebay Volume)/(Total Pond Volume) *100% Step 4. Verify that time required to drawdown the 1.5-inch runoff volume is within 2 to 5 days. Diameter of Proposed Low -Flow Orifice 2.00 IN Value chosen by designer Elevation of Temp Pool 54.50 FT Provided Storage Vol Elev. Total Elevation Head Above Orifice 1.50 FT (Total Elevation Head Above Orifice)=(Weir Elevation) - (Elevation of Permanent Pool Surface) (Average Elevation Head Above Orifice)=[(Storage Average Elevation Head Above Orifice 0.50 FT Elevation at Required Volume)+(Elevation of Permanent Pool Surface)]/3-(Storage Elevation at Required Volume) Cd, Coefficient of Discharge 0.60 Value chosen by designer Q, Flowrate Through Low -flow Orifice 0.06 CFS Q=Cd*(Pi)*[(Diameter ofOrifrce)*(1 ft/12 in)]12/4*[2*32.2*(Average Head)]^1/2 Drawdown Time for 1.5-inch Runoff 3.11 DAYS (Drawdown Time) =(1.5" Runoff Volume)/Q*(1 day186400 seconds Enterprise Dr Pond A Stage -Area -Storage Calculations Stage/Storage Above Permanent Pool (Including Forebay) Cumulative Contour Incremental Volume, S Contour Area (SF) Volume (CF) (CF) 63.0 12,173 0 0 --Permanent Pool 54.0 13,798 12,986 12,986 55.0 15,516 14,657 27,643 56.0 17,290 16,403 44,046 -Top of Pond Stage/Storage Total Pond (Including Forebay) Cumulative Contour Incremental Volume, S Contour Area (SF) Volume (CF) (CF) 45.0 1 607 0 0 46.0 47.0 48.0 49.0 50.0 51.0 52.0 53.0 54.0 55.0 56.0 Forebay Contour 2,079 2,613 3,207 3,851 6,060 7,220 8,459 12,173 13,798 15,516 17,290 1,843 2,346 2,910 3,529 4,956 6,640 7,840 10,316 12,986 14,657 16,403 0 2,346 5,256 8,785 13,741 20,381 28,220 38,536 51, 522 66,179 82,582 Cumulative Contour Incremental Volume, S Area (SF) Volume (CF) (CF) 48.0 777 0 0 49.0 1130 0 0 50.0 1,509 1,320 1,320 51.0 1,915 1,712 3,032 62.0 2,345 2,130 5,162 53.0 2,802 2,574 7,735 --Pond Bottom • -Sediment Storage -Bottom of Shelf •Permanent Pool -Top of Pond +-Forebay Bottom. Sediment Storage ­Forebay Volume k " 9 tV OCT 18 20to Enterprise Dr Self Storage Pond B NCDEQ Wet Retention Basin Requirements Objective: Design a wet retention basin with the following characteristics: a permanent water pool depth between 3- and 6-feet, a surface area that meets TSS removal requirements (values set by NCDFQ and included here), a forebay that is approximately 20% of the total pond volume, a temporary water pool sized to detain the initial 1.5 inch of rainfall runoff, an outlet device that drains the temporary water pool within 2-5 days, and a length -to -width ratio of approximately 3:1. Step 1: Determine the surface area required for 90% TSS removal Post -Development Conditions Total Drainage Area 2.66 ACRE Value from CAD Impervious Drainage Area 1.94 ACRE Value from CAD Impervious Cover 72.8% Impervious Cover=(Impervious Drainage Area)/(Total Drainage Area) *100% Elevation of Permanent Pool Surface 54.5 FT Value selected by designer Avg. Depth of Permanent Pool 4.0 FT Value from Avg. Depth Calculation Option 2 Elevation of Wet Detention Pond Bottom 47.0 FT (Bottom Elevation)=(Permanent Pool SurfaceElevation)-(Depth of Permanent Pool) Approximate Pond Length 170 FT Value from CAD A roxie Pond Width 4 63 FT Value from CAD Length .W,I Ratio 3:1 Ratio = Len th Width :1 Required SA/DA Ratio for 90% TSS Removal 6.30 Value from chart. Reference: 90% TSS Removal Required Permanent Pool Surface Area 7,308 SF Required Surface Area=(Required SA/DA Ratio) *(Total Drainage Area) Provided Permanent Pool Surface Area 7,546 SF From stage -storage calculations Step 2: Determine the 1.5-inch runoff elevation within the wet detention pond. Runoff Coefficient, Rv 0.706 IN/IN Rv=0.05+0.009*(% Impervious) Required 1.5" Runoff Volume 10,231 CF 1.5" Runoff Volume=1.5 inch*Rv*1 foot/12 (Volume of Temporary Pool) inch*(Total Drainage Area) Permanent Pool Volume 21,493 CF Value from stage -storage calculations (cumulative pond volume at permanent pool elevation) Total Vo!u ,,e to be Centrened 3 724 CF Total Volume to be Controlled=(Volume Below Permanent Pool) +(1.5" Runoff Volume) Storage Elevation at Required Volume 55.71 FT Value is interpolation based upon stage -storage values. See stage -storage calculations Storage Elevation Provided 56.00 FT Value chosen by designer Step 3a: Calculate the required forebay volume (18-22% of perm. pool volume) and compare to the forebay volume provided PPool Volume K V 21,493 Cf Total PPool Volume Required Forebay volume C) 1 t i 4,299 CF Forebay Volume=(Total Pond Volume)*20% n C E3 Average Uepth Calculation: (Option 2 per Errata) Pond #1 A5._. shm.= 5,324 Sf main+forebay AB__ Pmd = 707 sf main excluding sed storage APe1,,, pcw = 7,546 sf main+forebay Depth = 5.5 ft Bottom of shelf to sed storage d,,,9 = ,4.0- ft Based on 6-ft shelf (0.50 not 0.2. SA/DA 6.3 Provided Forebay volume 4,159, CF Value from stage -storage calculations Provided Forebay Volume:ToYal Pond Volume 19.4 (Provided Forebay Volume)1(Total Pond %u Volume) 100 /o Step 4. Verify that time required to drawdown the 1.5-inch runoff volume is within 2 to 5 days. Diameter of Proposed Low -flow Orifice 1.75. IN Value chosen by designer Elevation of Temp Pool 56.00 FT Provided Storage Vol Flev. Total Elevation Head Above Orifice 1.50 FT (Total Elevation Head Above Orifice)=(Weir Elevation) - (Elevation of Permanent Pool Surface) (Average Elevation Head Above Orifice)=((Storage Average Elevation Head Above Orifice 0.50 FT Elevation at Required Volume)+(Elevation of Permanent Pool Surface)]/3-(Storage Elevation at Required Volume) Cd, Coefficient of Discharge 0.60 Value chosen by designer Q, Flowrate Through Low -flow Orifice 0.05 CFS Q=Cd*(Pi)*((Diameter of Orifice)*(1 ft112 in)]-214*(2*32.2*(Average Head)]A112 Drawdown Time for 1.5-inch Runoff 2.50 DAYS (Drawdown Time)=(1.5" Runoff Volume)/Q*(1 day186400 seconds Enterprise Dr Pond B Stage -Area -Storage Calculations StagelStorage Above Permanent Pool (Including Forebay) Cumulative Contour Incremental Volume, S Contour Area (SF) Volume (CF) (CF) 54.5 7,546 0 0 •Permanent Pool 55.0 8,243 3,947 3,947 56.0 9,565 8,904 12,851 57.0 10,943 10,254 23,105 58.0 12,378 11,661 34,766 59.0 13,868 13,123 47,889 -Top of Pond Stage/Storage Total Pond (Including Forebay) Cumulative Contour Incremental Volume, S Contour Area (SF) Volume (CF) (CF) 47.0 363 0 0 +Pond Bottom 48.0 707 0 0 Sediment Storage 49.0 1,125 916 916 50.0 2,047 1,586 2,502 51.0 2,851 2,449 4,951 52.0 3,766 3,309 8,260 53.0 4,779 4,273 12,532 53.5 5,324 2,526 15,058 •Bottom of Shelf 54.5 7,546 6,435 21,493 +-Permanent Pool 55.0 8,243 3,947 25,440 56.0 9,565 8,904 34,344 57.0 10,943 10,254 44,598 58.0 12,378 11,661 56,259 59.0 13,868 13,123 69,382 'Top of Pond Forebay Cumulative Contour Incremental Volume, S Contour Area (SF) Volume (CF) (CF) 48.0 97 0 0 -Forebay Bottom 49.0 218 158 0 +Sediment Storage 50.0 428 323 323 51.0 663 546 869 52.0 936 800 1,668 53.0 1,239 1,088 2,756 53.5 1,404 661 3,416 54.5 1,569 743 4,159 -Forebay Volume NOTE: This is not a survey. All boundaries and distances are considered approximate. This represents a preliminary sketch prepared from field notes. A survey of delineated areas and review and approval by the US Army Corps of Engineers is recommended prior to specific site planning. Numbers represent approximate flag lccalicns. M , qr Areas considered to be uplands - 10.0 ac or 937 Flogged wetlands (pending review and approval E by the U.S. Army Corps of Engineers - 0.7 ac or 7 Andrew Jackson HWy NE �"--•�_' _ UWETL.ANDS;rr 9yt@tandwe0andske r Map Source: 2010 GIS Wortd limageAM1111111111111111L ]italGlob* round. IGN SR#1723 i N SCALE 1" = 200' r � A � Earthstar Geographics, CNESIAirbus DS, USOX-13SCaS, AEX;-" Enterprise Driv TAWTh- IE IV LMG Brunswick Cou y, NC nti�>�,tnnn',Emr,[V,n�•�1F Preliminary OCT 0 6 2016 www.lmgro�.net UplandlWetland Sketch October 2 1 3805 Wrightsville Avenue LMG # 40-16-20f: Wilmington, NC 28403 Phone:910.452.0001 Fax:910-452.0060 PARAMOUNTE i--- N G I N E t= FZ I N G, 1 N G. October 18, 2016 ECEIVG Mrs. Christine Hall OCT 1: 8 2016 NCDEQ— DEMLR — Land Quality 127 Cardinal Dr. Ext BY: Wilmington, NC 28405 RE: Request for Additional Information 2 aE C-_rj j-\7 E D Express Stormwater Permit SW8 160910 OCl 18 2016 Enterprise Drive Self -Storage, Brunswick County, NC Dear Mrs. Hall, On behalf of WCM Enterprises, LLC, we are submitting a response to the above -referenced as e- mailed on October 10, 2016. Please find your comments below with our response provided in bold. 1. 15A NCAC 021-1. 1 003(g)(4): a. In response to Item 1 of the previous request for additional information, proposed contours and spot elevations were added to C-3.1. However, the indented grading plan in the vicinity of DI- 203 and the entrance off Enterprise Drive is not clear. For instance, the rim elevation of DI-203 appears to be set higher than the surrounding areas. Please provide additional grading information to support the delineated drainage area along the entrance road off- EFiterprise Drive. Response: I added a few more spots to show the inverted crown of the driveway more clearly. I subsequently tighten up the drainage area and revised applications, etc. b. As requested in Item 1 of the previous request for additional information, please provide the drainage information associated with the proposed collection system including elevations. Response: The storm drainage collection system has grade provided in a storm schedule table. 15A NCAC 021-1.1008(e)(10) and Reeotr mendation her Figiwe 10-2b and Section 10.3.4 of the 2007 BMP manned: In response to Item 3 of the previous request for additional information, the forebay for both ponds were deepened by one foot to provide sediment storage. However, the Stage/Storage Total Pond (Including Forebay) table for Pond A appears to include the volume associated with this sediment storage from the forebay in the determination of the permanent pool volume. For instance, at the new forebay bottom elevation of 48 ft, the associated surface area and incremental volume presented in this table both increased from the previous set of calculations. Please confirm that the sediment removal elevation in both the main pond and the forebay have been excluded from the main pond calculations. If these revised calculations are correct, please confine that the permanent pool volume is presented consistently between the application documents. Response: Volumes have been updated to reflect the exclusion of the sediment storage volume. 15A NCAC 0211.1003(1,)(5): In response to IteFn 5 of the previous request for additional information, a preliminary upland/wetland sketch was provided. Since wetlands have been located within the site boundary, please delineate the wetlands on the plans. Response: Wetlands have been shown and preliminary permit impact areas shown. 1 2 2 C I N E M A D R I V E, W I L M I N G T ❑ N, N C 2 9 4 ❑ 3 H . ( 9 F 0) 7 9 1 - 5 7 0 7 F A X [ 1 9 1 0 1 7 9 1 - 6 7 6 0 r� 1r ,� _.. �..L ... , 4 t��i'f l �i„ j` 4�` 9 �, ,,� Mrs. Christine Hall Page 2 of 2 4. Recommendation: In response to Item 6 of the previous request for additional information, revised GPS coordinates were provided in Section I.4 of the application. However. these coordinates appear to locate a spot in Macon County instead of Brunswick County. Please confine the latitude and longitude provided in Section 1.4 of the application for accuracy. Accurate coordinates lielp to improve the pennit mapping tools available on the DI --MLR website. Response: The lat and long have been corrected. 5. "I'he express additional infonnation review fce has been waived for this request. Response: We appreciate that. Sincerely, Paramounte Engineering, Inc. J. ranch Smith, PE bsmith@paramounte-eng.com Cc: Bill Schoettelkotte, WCM Enterprises Encl: (2) Grading and Drainage Plans (C-3.1) & Drainage Area Map (DA-Map) (2) Revised Appl. Page 1 and 3 (1) Supplements for Pond A &B (1) Revised Narrative & Pond Calcs F-CEIVE OCT 18 2016 BY: 1 2 2 C 1 N E M A D R 1 V E, W I L M I N C T ❑ N, N C 2 8 4 ❑ 3 P H 1 9 1 0 1 7 9 1 - 6 7 0 7 F A X: f 9 1 ❑ 1 7 9 1 , 6 7 G 0 �r PAT McCRORY Governor DONALD R. VAN DER VAART Secretary Energy, Mineral & TRACY DAVIS Land Resources Director ENVIRONMENTAL QUALITY October 10, 2016 William W. Schoettelkottc, Manager WCM Enterprises, LI.,C 305 Colonial Dr. Wilmington, NC 28403 Subject: Request for Additional Information Stormwater Project No. SW8 160910 Enterprise Drive Self -Storage Brunswick County Dear Mr. Schoettelkottc: The Wilmington Regional Office received and accepted an Express State Stormwater Management Permit Application for Enterprise Drive Self -Storage on September 26, 2016 with additional information received on October 6, 2016. A preliminary in-depth review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: 15A NCAC 021-I.1003(g)(4): a. In response to Item 1 of the previous request for additional information, proposed contours and spot elevations were added to C-3.1. However, the indelacd grading plan in the vicinity of I7I-203 and the entrance off 13nterprise Drive is not clear. For instance, the rim elevation of DI-203 appears to be set higher than the surrounding areas. Please provide additional grading information to support the delineated drainage area along the entrance road off Enterprise Drive. b. As requested in Item 1 of the previous request for additional information, please provide the drainage information associated with the proposed collection system including elevations. /2. 15A NCAC 021-1.1008(e)(10) and Recommendation per Figure 10-2b and Section 10.3.4 of the 2007 BMI' manual : In response to Item 3 of the previous request for additional information, the Forebay for both ponds were deepened by one foot to provide sediment storage. However, the Stage/Storage Total Pond (Including Forebay) table for Pond A appears to include the volume associated with this sediment storage from the Forebay in the determination of the permanent pool volume. For instance, at the new Forebay bottom elevation of 48 ft, the associated surface area and incremental volume presented in this table both increased from the previous set of calculations. Please confirm that the sediment removal elevation in both the main pond and the forebay have been excluded from the main pond calculations. If these revised calculations are correct, please confirm that the permanent pool volume is presented consistently between the application documents.- 15A NCAC 021-1.1003{g)(5): In response to Item 5 of the previous request for additional information, a preliminary upland/wetland sketch was provided. Since wetlands have been located within the site boundary, please delineate the wetlands on the plans. ✓ 4. Recommendation: In response to Item 6 of the previous request for additional information, revised GPS coordinates were provided in Section I.4 of the application. However, these coordinates appear to locate a spot in Macon County instead of Brunswick County. Please confirm the latitude and longitude provided in Section I.4 of the application for accuracy. Accurate coordinates help to improve the permit mapping tools available on the DEMI,R website. 5. The express additional information review fee has been waived for this request. State of North Carolina I Environmental Quality I Energy. Mineral and Land Resources Wilmington Regional office 1127 Cardinal Drive Extension I Wilmington. NC 28405 W 7% 7215 i State Storrnwater Permit No. S%V8 160910 ]'age 2 of2 Please keep in mind (hat changing one number may change other numbers and require the calculations; supplements, and other supporting documentation to be updated. 'Verify all numbers are correct to ensure consistency in the application documents. 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 October 18, 2016, or the application will be returned as incomplete. Please note that only Avo letters requesting additional information is allowed in the State Stormwater Program. If the infornzatiO17 is not satisfactorily provided after the second request, Ithe project will be returned. If the project is returned and you wish to re -submit to the Express Program, you will need to reschedule the project through the Express Coordinator for the next available review date and will need to resubmit all of the required items at that time, including the application fee. If you need additional time to submit the information, please email or fax your request for a time extension to the Division at the email address or fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information, which shall be no later than 5 business days past the original due date. 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 label all packages and cover letters as "Express'' and reference the project name and State assigned project number on all correspondence. If you have any questions concerning this matter, please feel free to call me at (910) 796-7215 or email me at christine.hall@ncdenr.gov. Sincerely, U�,�. W4 Christine 1-fall Environmental Engineer GDSlcanh: I11StormwaterlPermits & Project.s120161160910 1-1D12016 10 addinfo 160910 cc: Branch Smith, Paramounte Engineering Wilmington Regional Off -ice Stormwater File State of North Carolina I Environmental Quality I Energy. Mineral and Land Resources Wilmington Regional office 1 127 Cardinal Drive Extension I wlmington. NC 28405 910 796 7215 :V Hall, Christine From: Hall, Christine Sent: Monday, October 10, 2016 3:31 PM To: 'Branch Smith'; bschoettelkotte@gmail.com Cc: Weaver, Cameron Subject: 2nd request for additional info - Enterprise Drive Self -Storage, SW8160910 Attachments: 2016 10 addinfo 160910.pdf Gentlemen, Attached is the second request for additional information regarding the subject project. As always, please let me know if you have any questions or concerns. Christine Christine Hall Environmental Engineer Division of Energy, Mineral and Land Resources — State Stormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7335 direct christine.hall@ncdenr.gov 127 Cardinal Drive Ext. Wilmington, NC 28405 —Nothing Compares--, C.-I.- Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Branch Smith [maiito:bsmith@paramounte-eng.com] Sent: Thursday, October 06, 2016 4:42 PM To: Hall, Christine <Christine.Hall@ncdenr.gov>; bschoettelkotte@gmail.com Cc: Weaver, Cameron <cameron.weaver@ncdenr.gov> Subject: RE: request for additional info - Enterprise Drive Self -Storage, SW8160910 Christine: See attached. We're delivering now. We were waiting to see about the wetlands and they picked them up for us. We thought they were none, but found an isolated pocket as such. We'll permit the impacts as stated in the letter. Kind Regard;; leirandi From: Hall, Christine[mailto:Christine.Hall@ncdenr.gov] Sent: Thursday, October 06, 2016 8:29 AM To: Branch Smith <bsmith@paramounte-eng.com>; bschoettelkotte@gmail.com t PARAMOUNTE E N G 1 iV E E Ft 1 IN G, I " C. October 6, 2016 Mrs. Christine Hall a r NCDEQ— DEMLR — Land Quality EC EI �I E 127 Cardinal Dr. Ext Wilmington, NC 28405 OCT 0 6 2016 IV.I~'..t D RE: Request for Additional Information BY: Express Stormwater Permit SW8 160910 OCT 0 6 2016 Enterprise Drive Self -Storage, Brunswick County, NC Dear Mrs. Hall, On behalf of WCM Enterprises, LLC, we are submitting a response to the above -referenced as e- mailed on September 29, 2016. Please find your comments below with our response provided in bold. 15A NCAC 021-1.1003(g)(4): Provide a topographic map or grading plan of' the project area showing the proposed contours for the proposed built -upon area and drainage information including the elevations associated with the proposed collection syslem. Recommendation: In the case where the contour interval on cr '7opngraphic"Harp is too large to adequately reflect the c-Yisthw and proposed ch-ahrage patterns ufa relatively flat property, spot elevations anellor a site-spec4k'l elevation survev ma}, he needed. - Response: Contours have been generated for the spot shots previously provided on the grading and drainage plan. 2. 15A NCAC 021-1.1003(g)(7): a. In Section IV.10 of the application, the suns of the impervious area allocated to Drainage Area B is inconsistent with the total presented. Please conf irrn Ilse amount of built -upon area allocated to Drainage Area B. Response: The Future Amount was not entered correctly. The permit application now shows the correct values that total to 84,500 sf. b. The calculations for Pond A list the depth used in the Option 2 calculation for determining pond average depth as being 7 ft. However, the distance between the bottom of the shelf (elevation reported as 52 ft) and the bottom of the pond / top of' tile sediment removal (elevation reported as 46) is 6 R. Please cotifirtn the intended design of the pond. Response: The depth was re -calculated to be 6.0 ft as stated, and average depth values changed from 5.2 to 4.6 ft therefore changing SA/DA from 4.51 to 4.94. The required pool surface area increased, but it would not require Pond A to be changed. c. The supplement for Pond A indications that the vegetated side slopes will have a slope of 4:1; however, the pond cross-section shows the side slopes will be 3:1. Please conf nil. Response: Supplement SS revised to 3:1. d. The Post -Development Calculations for Pond B list the bottom elevation as 46 ft.. however, the remaining application documents list this elevation as 47 ft. Please confirm. Response: The calculations have been revised to reflect bottom of 47 ft for Pond B. 1 2 2 G I N G M A b R I V E, w I L M I N G T❑ N, N G 2 B 4 ❑ 3 P H: 1 9 1 0 1 7 9 1 - 6 7 0 7 F A X: 1 9 1 O I 7 9 1 - 6 7 6 ❑ Mrs. Christine Hall Page 2 of 2 3. 15A NCAC 021-1.1008(c)(10) and Recommendation per l=igrrre I0-2h and .Section I0.3.4 offhe 00713AIP manual: The permanent pool rolume is considered to he hcltreen the per m nrerrt pool elevation and the top elevation of the sediment storage and does not include the recommended rrrirrimurn l-fuot sedirrrenl rrccumulalion depth. The stage -storage tables for the forebays in both ponds appear to indicate that the forebay volumes include the recommended 1-foot sediment accumulation depth. Please demonstrate that the appropriate volumes have been considered and/or that the wet detention ponds have been designed to account fc)r sufficient sediment storage to allow the proper operation and maintenance of the facility between scheduled clean outs. Response: The forebay volumes have been added and pond bottom elevations are revised. 4. 15A NCAC 021-I.1008(e)(2): Sheet C-4 lists the discharge outlet elevation for the 24" outlet pipe for Pond 13 as being set at 52.5 fi. However, the contours shown on C-3.1 in the vicinity of the proposed outlet indicate that the drainage feature this pipe discharges to has an elevation of approximately 57 fi. Please confirm the design or provide additional details demonstrating that the pond will be able to drawdown as intended. Response: The outfall pipe was relocated to avoid major ditch re -grading subject to NCDOT's approval, therefore, the pipe outfall drains to elevation 53.0. 5. 15A NCAC 021-1.1003(g)(5): As discussed in the submittal meeting on September 23. 2106 and noted in my e-mail dated September 26, 2016, please cithcr delineate the onsite Wetlands or include a note on the plans that none exist within the site area. ]fa note is already on the plans, please provide a citation of -where the note can be found. Response: Wetlands have been found on the property and will be permitted as impacts. 6. Recommendation: Please check the latitude and longitude provided in Section 1.4 of the application for accuracy. Accurate coordinates help to improve the permit mapping tools available oil the DI MI-R website. Response: The lat and long have been corrected. 7. The express additional information review fee has been waived for this request. Response: We appreciate that. Sincerely, Paramounte Engineering, Inc. YBranch Smith, PE bsmitFt.�paramounte-eng com Cc: Bill Schoettelkotte, WCM Enterprises Encl: (2) Grading Plans (C-3.1) k tkslw IS (2) Revised Appl. Page 1 and 3 (1) 0&M Page 4 (1) Supplements for Pond A &B (1) Revised Narrative & Pond Calcs (1) EMG Wetland Sketch V'Oewr% oct o 6 zoos 1 2 2 C I N E M A D R I V E, W I L M I N G T ❑ N, N C 2 B 4 ❑ 3 P H 1 9 1 0 1 7 9 1 - C. 7 ❑ 7 F A %: (9 1 ❑ ) 7 9 1 - 6 7 6 4 Hall, Christine From: Branch Smith <bsmith@paramounte-eng.com> Sent: Thursday, October 06, 2016 4:42 PM To: Hall, Christine; bschoettelkotte@gmail.com Cc: Weaver, Cameron Subject: RE: request for additional info - Enterprise Drive Self -Storage, SW8160910 Attachments: C-3.1.pdf; C-4.2.pdf; 161006 SW Resgonsel_.pdf Christine: See attached. We're delivering now. We were waiting to see about the wetlands and they picked them up for us. We thought they were none, but found an isolated pocket as such. We'll permit the impacts as stated in the letter. Kind Regards. F3ranch From: Hall, Christine[mailto:Christine.Hall@ncdenr.gov} Sent: Thursday, October 06, 2016 8:29 AM To: Branch Smith <bsmith@paramounte-eng,com>; bschoettelkotte@gmail.com Cc: Weaver, Cameron <cameron.weaver@ncdenr.gov> Subject: RE: request for additional info - Enterprise Drive Self -Storage, SW8160910 Branch, The requested information for this project was due back prior to today. I haven't seen anything come in yet on this project. Can you advise on its status? Thanks, Christine Christine Hall Environmental Engineer Division of Energy, Mineral and Land Resources — State Stormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7335 direct christine.hall(d.ncdenr clov 127 Cardinal Drive Ext. Wilmington, NC 28405 K..C- Nothing Compares_.. Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Hall, Christine Sent: Thursday, September 29, 2016 12:31 PM To:'Branch Smith' <BSmith@paramounte-eng.com>; 'bschoettelkotte@gmail.com' <bschoettelkotte@gmail.com> Energy, Mineral & Land Resources ENVINONMENTAL QUALITY September 29, 2016 William W. Schoettelkotte, Manager WCM Enterprises, I.LC 305 Colonial Dr. Wilmington, NC 28403 Subject: Request for Additional Information Stormwater Project No. S` N'8 160910 Enterprise Drive Self -Storage Brunswick County Dear Mr. Schoettelkotte: PAT McCRORY Governor DONALD R. VAN DER VAART Secretary �/a,�/('0 TRACY DAVIS Director 'I'he Wilmington Regional Office received and accepted an Express State Stormwater Management Permit Application for Enterprise Drive Self -Storage on September 26, 2016. A preliminary in-depth review of thal information has determined that the application is not complete. The following information is needed to continue the stormwater review: r\,J 1. 15A NCAC 021-1.1003(g)(4): Provide a topographic map or grading plan of the project area showing the proposed contours for the proposed built -upon area and drainage information including the elevations associated with the proposed collection system. Recommendation: In the case where the contour interval bn a "'topographic " map is too large to adequately reflect the existing and proposed drainage patterns of a relatively flat property, spot elevations andlor a G• a`�� site -specific elevation survey may be needed. IpJ 2. 15A NCAC 0214.1003(g)(7): ,o 4/a. In Section IV.10 of the application, the sum of the impervious area allocated to Drainage 4,r. Area l3 is inconsistent with the total presented. Please confirm the amount of built -upon area allocated to Drainage Area 13. Vb "fhe calculations for Pond A list the depth used in the,Option 2 calculation for determining pond average depth as being 7 ft. However, the distance between the bottom of the shelf (elevation reported as 52 ft) and the bottom of the pond / top of the sediment removal (elevation reported as 46) is 6 ft. Please confirm the intended design of the pond. "I'he supplement for Pond A indications that the vegetated side slopes will have a slope of VdI-_ 4:1; however, the pond cross-section shows the side slopes will be 3:1. Please confirm. "fhe Post -Development Calculations for Pond 13 list the bottom elevation as 46 ft, however, the remaining application documents list this elevation as 47 ft. Please confirm. 3. 15A NCAC 021-1.1008(e)(10) and Recommendation per Figure 10-2b and Section 10,3.4 of the 2007 BMP manual: The permanent pool volume is considered to be benveen the permanent pool elevation and the top elevation of the sediment storage and does not include the recommended minimum 1-foot sediment accumulation depth. The stage -storage tables for the forebays in both Ponds appear to indicate that the forebay volumes include the recommended 1-foot sediment accumulation depth. Please demonstrate that the appropriate volumes have been considered and/or that the wet detention ponds have been designed to account for sufficient sediment storage to allow the proper operation and maintenance of the facility between scheduled clean outs. State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources Wilmington Regional Office 1 127 Cardinal Drive Extension I Wilmington, NC 28405 910 796 7215 State Stormwater Permit No. SW8 160910 Page 2 of 2 ✓ 4. 15A NNCAC 021-1.1008(e)(2): Sheet. CA lists the discharge outlet elevation for the 24" outlet pipe for Pond 13 as being set at 52.5 ft. However, the contours shown on C-3.1 in the vicinity of the proposed outlet indicate that the drainage feature this pipe discharges to has an elevation of approximately 57 ft. Please confirm the design or provide additional details demonstrating that the pond will be able to drawdown as intended. 5. 15A NCAC 021-1.1003(g)(5): As discussed in the submittal meeting on September 23, 2106 and noted in my c-mail dated September 26, 2016, please either delineate the onsite wetlands or include a note on the plans that none exist within the site area. If a note is already on the plans, please provide a citation of where the note can be found. 6. Recommendation: Please check the latitude and longitude provided in Section 1.4 of the application for accuracy. Accurate coordinates help to improve the permit mapping tools available on the DEIMLR website. T The express additional information review fee has been waived for this request. Please keep in mind that changing one number may change other numbers and require the calculations, supplements, and other supporting documentation to be updated. Verify all numbers are correct to ensure consistency in the application documents. 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 October 6, 2016, or the application will be returned as incomplete. If the project is returned and you wish to re -submit to the Express Program, you will need to reschedule the project through the Express Coordinator for the next available review date and will need to resubmit all of the required items at that time, including the application fee. If you need additional time to submit the information, please email or fax your request for a time extension to the Division at the email address or fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information, which shall be no later than 5 business days past the original due date. 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 label all packages and cover letters as "Express" and reference the project name and State assigned project number on all correspondence. If you have any questions concerning this matter, please feel free to call me at (910) 796-7215 or email me at christine.hall@ncdenr.gov. Sincerely, r CL& , p , 0 Q Christine Hall Environmental Engincer GDSlcanh: 111Stormwatcr\Permits & 1'rojects120161160910 HM2016 09 addinfo 160910 cc: Branch Smith, Paramounte Engineering Wilmington Regional Office Stormwater File State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources Wilmington Regional Office f 127 Ca rdinal Drive Extension I Wilmington, NC 28405 910 796 7215 Hall, Christine From: Hall, Christine Sent: Thursday, September 29, 2016 12:31 PM To: 'Branch Smith'; 'bschoettelkotte@gmail.com' Cc: Weaver, Cameron , Subject: request for additional info - Enterprise Drive Self -Storage, SW8160910 Attachments: 2016 09 addinfo 160910.pdf Gentlemen, Attached is a pdf of the request for additional information on the subject project. Please let me know if you have any questions or concerns. Thanks, Christine Christine Hall Environmental Engineer Division of Energy, Mineral and Land Resources - State Stormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7335 direct christine.hall@ncdenr.gov 127 Cardinal Drive Ext. Wilmington, NC 28405 -::::-`-Nothing Compares--,,, Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Hall, Christine From; Hall, Christine Sent: Monday, September 26, 2016 1:44 PM To: 'Branch Smith' Cc: 'bschoettelkotte@gmail.com'; Weaver, Cameron Subject: Enterprise Dr. Self Storage Branch, I received the revised submittal this morning and it looks like all of the items discussed in the meeting were addressed except I still can't find the wetland note on the plans. Where I can find this note? If the wetland note was inadvertently left off the plans, it will need to be addressed. Since this is a minor item, I will go ahead and accept the submittal as received this morning. Thanks, Christine Christine Hall Environmental Engineer Division of Energy, Mineral and Land Resources — State Stormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7335 direct christine.hall@ncdenr.gov 127 Cardinal Drive Ext. Wilmington, NC 28405 —/'Nothing Compares. — Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. 1 For DEQ Use ONLY Reviewer: �� � North Carolina Department of Environmental Quality \' 4` _ sU�mic Request for Express Permit Review N-A Time: _Ir Confirm; FILL-IN all the information below and CHECK the Permit(s) you are requesting for express review. Call and Email the completed form to the Permit Coordinator along with a completed DETAILED narrative, site plan (PDF file) and vicinity map (same items expected in the application ap ckape of the project location. Please include this form in the application package. • Asheville Region -Alison Davidson 828-296-4698;alison.davidson@ncdenrgov • Fayetteville or Raleigh Region -David Lee 919-791-4203, david.Iee@ncdenrgov • Mooresville or Winston Salem -Marcia Allocco 704-235-2107, marcia.allocco@ncdenr.gov • Washington Region -Lyn Hardison 252-948-3842 or lyn.hardison@ncdenr.gov • Wilmington Region -Cameron Weaver 910-796-7303 or Cameron. weaver@ncdenr. ov NOTE. Project application received after 12 noon will be stamped in the following work day, Project Name: ENTERPRISE SELF STORAGE County: BRUNSWICK Applicant: BILL SCHOETTELKOTTE Company: WCM ENTERPRISES Address: 305 COLONIAL DR City: WILMINGTON, State: NC Zip: 28403- Phone: 919.880-0063, Fax: _ , Email: bschoettelkotie@pmail.com Physical Location: ENTER PRISE AND TRADE DR Provided Existing Permits related to this Project SW SW SW NPDES NPDES Wo Wo — E&5_ _ E&S _ Other \1,ojecl Drains into C waters — Water classification SW (DWR Surface Water Classifications Map) Project Located in CAPE FEAR River Basin. Is project draining to class QRW waters? N, within 112 mile and draining to class SA waters N or within 1 mile and draining to class HOW waters? N Engineer/Consultant: BRANCH SMITH PE Company: PARAMOUNTE ENGINEERING Address: 122 CINEMA DR City: WILMINGTON, State: NC Zip: 28403-_ Phone: 910-791-6707, Fax: _ _ , Email: bsmith@paramounte-eng.com ®� PLEASE PROVIDE ESTIMATED INVESTMENT AND EXPECTED EMPLOYMENT, IF AVAILABLE $# JOBS SECTION ONE: REQUESTING A SCOPING MEETING ONLY ❑ Scoping Meeting ONLY ❑ DWR, ❑ DCM, ❑ DEMLR, ❑ OTHER: SECTION TWO: CHECK ONLY THE PROGRAM (S) YOU ARE REQUESTING FOR EXPRESS PERMITTING ❑ 401 Unit ❑ Stream Origin Determination: _ # of stream calls — Please attach TOPO map marking the areas in questions ❑ IntermittentlPerennial Determination: _ # of stream calls -- Please attach TOPO map marking the areas in questions ❑ 401 Water Quality Certification ❑ Isolated Wetland (_linear ft or _acres) ❑ Riparian Buffer Authorization ❑ Minor Variance ❑ Major General Variance �® Stake Stormwater ❑ General ❑ SFR, ❑ SFR < 1 ac. ❑ Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility ❑ Other ❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Outlet Swales ❑ Off -site [SW (Provide permit #)] ®'High Density -Detention Pond )# Treatment Systems ❑ High Densily-Infiltration _ #Treatment Systems ❑ High Density -Bio-Retention _ # Treatment Systems ❑ High Densily-SW Wetlands _ # Treatment Systems ❑ High Density -Other _ # Treatment Systems /❑ MOD:❑ Major ❑ Minor ❑ Plan Revision ❑ Redev. Exclusion SW (Provide permit n) ❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront t®'Land Quality ® Erosion and Sedimentation Control Plan with 11 acres to be disturbed. (CK # & Amt. (for DEO use)) SECTION THREE - PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT (for both scoping and express meeting request). Wetlands on Site ❑ Yes ® No Buffer Impacts: ❑ No ❑ YES: _acre(s) Wetlands Delineation has been completed: ❑ Yes ❑ No . Isolated wetland on Property ❑ Yes ❑ No US ACOE Approval of Delineation completed: ❑ Yes ❑ No 404 Application in Process wl US ACOE: ❑ Yes ❑ No Permit Received from US ACOE ❑ Yes ❑ No Poi DI"Q use or)iy Fee Split for multiple permits: (Check # ] Total Fee Amount $ SUBMITTAL DATES Fee SUBMITTAL DATES Fee CAMA $ Variance (❑ Mai; ❑ Min) $ SW (❑ HD, ❑ LD, ❑ Gen) $ 401: $ LQS 1$ Stream Deter. $ NGDEQ EXPRESS March 2016 dtla! aS y �� n wwwww � 11 R w� e�ac• PNocr�u.Ir,c a.b.m»+sera 4 g ! �I I I 11 f:l I OIL _► _ — Y e. F\T•RPRISY. I]RIYP. N•r � PRIiLIMINARY DESIGN - NOT RI [.1?,ASPM FOR CONSTRUCTION PRatels elus SITE 131,AI\ ������•"•��• eEvs�Ny. (� pARAM. U_NTTF — elwa�..rv-�yM1FRIN].IiJ.A\bINUU1l'IiIAJ.$1?].U-5'1'ORACJ: N iSRUNSWICK COUNTY I�,,:Wu, NORTH CAROLINA wwowl-aim wlw lul'1'1I-e�mil9 I ENTERPRISE DR SELF STORAGE BP-UNSWJC.K COUN':f'Y, NOR':11-1 CAROLINA STORMWATER AND EROSION CONTROL NARRATIVE Prepared for.: WCM Enterprises, LLC 305 Colonial Drive Wilmington, NC 28403 Prepared by: ... ,--...................... PARA:MC-UNTE 122 Cinerna Drive WITiington, NC 28403 (910) 791-6707 NC License t3: C-2846 Project 413119. 1.)1; September 20"16 ENTERPRISE DR SELF STORAGE BRUNSWICK COUNTY, NORI-1-1 CAROLINA Table of Contents PROJ11C1' NARRATIVE: PROPOSED EROSION CONTROL MLASURES PROPOSED S1'ORMWATEAR CONTROL MHASURES A'l" ACI-IMTNTS: property Deed Soils Map USGS Map Storrnwater/E3rosion Control Calculations PROJECT NARRATIVE WCM Enterprises is developing a proposed self -storage facility located on US 74/76 at the intersection of Enterprise Drive, which is Leland Industrial Park or Windsor Commercial Park. It is further identified by Brunswick County PIN 11: 218809062699, Parcel ID 0280000842 (10.70+/- ac), and coordinates: Isar: 34° 15' 33.39"N, [song: 78' 4' 22.94" W. The site is adjoined by US 74/76 to the south, a Duke I-Inergy substation and shop to the west, FriLcrprise Drive to the east, and Trade Street to the North cleared property except the cast, which is residential use. A Duke Energy Transmission 70-ft ROW (Sutton Linc 230Kv South) runs across the property. The current site consists of 0-1% sloped terrain with part woods. '['he existing soils on the site are predominantly Leon -fine sand (Lo) according to the Web Soil Survey of NRCS. According to tlhe attached USGS map, the site drains to Banton Branch, which is classified as Cl- SW in Cape Dear River Basin. PROPOSED EROSION CONTROL MEASURES A. TE' 'MI'ORARY CONSTRUCTION ENTRANCE (DENK PRACTIC1 6.06) Two temporary gravel construction entrances are installed on the two proposed state road driveways. 11. `I'1?MPORARY SILT (SEDIMENT) FENCE (DENR PRACTICE 6.62) Temporary silt fence will be used to control sediment runoff from fill areas, and prevent any const.ruct.ion sediment or trash from leaving the site. C. RIP -RAP OUI'L E"T PROTECTION (DENK PPACT'ICF" 6.41) One outlet protccdon is shown within the sediment basin (future wet detention basin) and will prevent scour and erosion front washing the inside of the storage basin as well as future wet pond slopes. D. T'I MPORARY'SKIMME.11 SEDINIE..NT BASIN (DENK PRACTICE 6.64) Two sediment basins will be used to control all disturbed area sediment -runoff with a skimmer dewatering device attached to the outlet for the future permanent wet pond. -Note: baffles are not included within the sediment basin details since water will be retained within the basin therefore submerging the baffles. An emergency overflow spillway is designed in accordance to the wet: pond design. E. TEMPORARY INLET PROTECTION (DENK PRACTICE 6.51) Inlct. protections are shown for most of the storm drainage inlets and is intended to be installed after construction of the inlets unless t.hc ground surrounding the inlets is stabilized with pavement or vegetation. Otherwise, the details indicated prevent most of the sediment -runoff from depositing and potentially clogging the proposed storm pipe networks. 1 . '1T'MPOKAKY'1'KL?Is PROTECTION FENCING (DENK PRACTICE 6.05) Tcrnporary t:rcc protcct.ion fencing is shown for. the significant trees PROPOSED STORMWATER CONTROL MEASURES Two wet retention ponds will be used to treat the 1.5-inch rainfall -runoff per NCDEQ State Stormwater Coastal Rules and provide peak discharge control below pre -developed runoff for the 1-yr and 10-yr design storms per the Brunswick County Stormwater Ordinance. The wet pond was calculated utilizing SCS TR-20 hydrograph routing simulations through use of HydroCAD modeling software. The treatment requirements for the 1.5-inch rainfall runoff were calculated using the Simple Method Runoff Calculation and the 909/o TSS removal requirements of a wet detention pond as described in the NCDI?Q Stormwater 13MP Manual. The seasonal high water table for this project was determined using good engineering judgment as'referenced on pages 10-9 and 10-10 of the NC17EQ Stormwater BMP Manual. Therefore, the norrual pool of the ponds was determined from the lowest possible grade elevation in the NCIDOT roadside Swale. Based on this, the permanent pool is set above or equal to the ditch grades thereby maintaining positive hydraulic conductivity. Storrs conveyance calculations have peen per.forrned utilizing tyre Rational Method for the 25-yr and 100-yr design storms to check for flood control within the pipe system. The hydraulic grade line (E-IGI,) calculations were performed (hroul;lr the Carlson Drainage Software using HEC22 13nerhy-Loss Mcthod. The published Brunswick Comity I I)FT,,tbles have been used for, the design storms. Wet Pond Outfall (DA-A� Re ei-e -e Appendi-, 1-iydroCAD Report Pre and Port-Developmew DA A DA = s acre (s SO CN is Impervious and Grass with I-ISG Type B Soils (CNI = y} Tc = s ruin (Based on NRCS Segmental Sheet, Shallow, and Concentrated Flow Lgns.) fond A Routing -Peak l lev: VISEL2 = 31.,1' WS131,10 = 32.3' WSEL25 = 32.6' WS1_.L50 = 32.8' WS11L.100 = 33.3' < 311.0' (Top of Pond) Pond A Routing Peak Discharge: Q2 = 5.7 cfs Q10 = 17.1 cfs Q25 = 20.3 cfs Princitrrl Outlet Blocked — Frner�;ency Overflow Analysis WSLL50 = 33.8' < 34.0' (Fop of Pond) WSI?1.,100 = 33.9' < 3,1.0' (I'op of Pond) / (34.8' FFE Buildings) Pre -Developed DA-A DA = x acre Pre -Development CN is Woods in hair Condition with i-ISG'I'ype C Soils (CN = x) Tc = x min (Based on NRCS Segmental Sheet: and Channel Flow Eqns) The flow path is from the top of the drainage- area into the wetland ditch to the outlet point of interest at the southwest corner of the property. Q2 - 26 cfs Q10 = 63 cfs Q25 - 77 cfs POND A O UTFALL PRE v POST RUNOFF S UMMAR Y.- Pre-Dev (DA-A): 'Total Post-Dev (DA-A) Q2 = 26 cfs <Q2 = 5.7 cfs Q10 = 63 cfs <Q10 = 17.1 cfs Q25 = 77 cfs <Q25 = 20.3 cfs Storm Networks to Vet Pond Min. Tc = 5 min to each inlet. • Rational C Value = 0.95 (average) • Inlet: Drainage Area = 0.25 acre (average) • 25-yr S(ortrr 111ev. = 42.60 ffailwater Condition) • 10-yr 1-1GL < Rim Elevation for all structures • 25-yr I-IGL < Rim Elevation for all structures 0 �wp;) c I FILED FOR BEGISIRA11ON OArF I IME 98 MY 20 AN 9:33 HODERI J. MUSSON REGISIFA OF OLEOS BRUNSWLCK COUN1Y.11C. U—, — M, I'l N, F':"' "I I-111106l" -V" See aLLacfled FhlhiL "A" .1+5' ..f 19 Ly C,h, Mail aft" —'di"g joS 0411 II . "! %[: -1201 0 J-115- Kash & I-Y-11, wia d—lij-6--n 1— 11- [Alt property 0,no,d -n—lironswick Cos ty NORTH CAROLINA C-FNI-RAL WARRANT)' D1--1--D ,r[Ll.'; PEED ..J. 0j. d.1- •d Apli I . V. 98 . to —'i C.1m."TOR w r-M KW S RPRISE NORTH Nut,)NA GLNEiW,EPA KTNEW�A CA i I I P C'0 I t: 1: A N WLM EHTfRPAl SE C�1�tCAN0HT1' c kiL,. A ITY ., . .,u, h, . , W ., r 1, , .... I I., -- p., I , — ­ , 14 1, 1 -1 11 1 111- 11 J, tr. rh.rannI -.. I Tbn d-ic—Li— Cr.0— ..,.I hA dull Vurlude singular. 1,1—), %%TrNESSPT11. Lbat thl aCl, _"J,dgrd, h- and by 0—. 1-11-01 J-1 V­"k. "41 null ...... . I- uul., [I., (;-"I- in J- simple. 1; that ,..LJm i.-I — ..f ., ... the (',j, ..f Bruns"ck C.."004. %.-[LIP 101.1 1.:­" '0-1, h.— 11-1 I ""or [hat properly described In a deed recorded it. Houk 5 Inpage 3] ,1 "cKiscry. ha i ng all of rt-t —,e, d, O C Q M.k 945 payer16, 740,244.71 k(io, 'Y fte I lig all of tt9-1—c] 1h,Fol1lowl'.P" deed recorded I., 11o.k 300, �f JZ' I v """Cy d.—lb'd 1. thr JoHowinK d-1 Te.—rd,-d In Nook 14191. v.1. I'D -1 B",g all of LIwL p..P—Ey described Jo a d—d recorded In Boot, 1189,. paget5Hjt) (,I B—..�,L C—ty vi Bc'lng ail of Mat property described In a d-4i recorded In flunk 652. page 918 of ti TA ............ . le mc, q,a(8 °��a ig V'a6 3'I,f_%1C\u !TILL MJNLII�t A('CI�I Ih•I' nllnsii C; F�E;JJA-l?ATI In No 1997 014372 1027 2.72-0 8--).97 1 A 02800008 r--'Tk't- s V97 (II4370 HC72.1:-u 8.2o.0 6-02200010Lr— 190 01.i3h3 1027 312-0 _500036 r— C✓� U a°ao 1997 n1.13a91 F-U210001.3 4r- 1997 01-1781 " a� D8 1 15--- L,Su D 8-26.07 �1 � 12600018 lrY 1997 014178 1027 2.12-0 8-26•'77 rrl a-028F:1i013 Z,-- I997 01-1379 1027'-1'-0 8-26-97 t y-028E°1101.1 190 014380 10272.12-0 'r-0281:1101i trT- 1907 n1-07h 1027_i?-0 97 � NFI1003 1907 q3a6 a 7 _xl [so01 !r 1997 01-1369 1027 242.4 x 26-97 r— 02NMot, 19117 01-1371 10272.12-1) S-26.97 r n234>FI031112 V-' 1997 u1a7b5 111::7 212-0 8-26.9'! 1 �02111A011 ar— 0 i�f�.�l a iffi T@ o Chun g@ o n(p Brunswick County NC. GIS 21 Y -,- "V" kq V -1 m I CO? ol' 1 1134 -., " 24 1130, We 121 Ah 1127 -2025 j024 �I (r 0 1118 04 , 2WO j 0 3 4 04 1040-1030 - 1026- M4 03 7 4 (1027-1; 3 '1035- .1c A 206 77 pry y; 8770 '2 605 7�7 7 73 8:�SfIaP81 858V2 8645'11204 �045' .905 �MU, -,--.2010 I ... . -�- - I 1 1 A. A Nq D R E %VAJ J XSOWH�.—� "76 % a iCS�ww 2031 ANDREW, 03 2065 03 2075JAL F4,7, 0 20511' !21 t'i -7- IN 7 A' rn; It 980 2 09�, 4.0, Qfi 897 - J"�,D GC2 5 71987,3- q55 1687 1' X7 1-145 'M(j 48 7 2 L-7 94 T &MC September4, 2016 1 = 400 Feet ti V.- -C ..—I Cap — t .. .—r.!e t� a=raw i, .e. g—Yatd The 1, : i , 1a,l —.— I .,WO — ., fy . tAw ­. ­.-L -,.Y. o, fe' ­11V —1.1— PAR) AM E N G I N E E F2 I N G, I N C. 1 2 2 CINEMA DRIVE W I L M I N G T O N, N C 2 8 4 0 3 9 1 0- 7 9 1- 6 7 0 7( O) 9 1 0- 7 9 1- 6 7 6 0 ( F) L E T T E R O F T R A N S M I T T A L To: NCDENR — DE,%fLR — Land Quality Date 1 09/26/2016 127 Cardinal Drive Ext. Wilmington, NC 28405 Re: Ente rise Dr Self Storage Express Stormwater Permit Review Attn: Christine Hall Project No. I 15379.PE e ate sendin ® Originals ® Prints ❑ Shop Drawings ❑ Calculations he following items: ❑ Correspondence ® Plans ❑ Specifications ® Other as listed below Quantity Date Dwg. No. Description 1 Check #2257 for $4000.00 1 Stormwater Narrative 2 Stormwater Application Form SWU-401 2 Pond A & B Supplements SWU-101 1 E7 Operation and Maintenance Agreement 2 9/22/16 24"x36" (Prelim — NFC) - Stormwater Plan Sheets Issue Status: ❑ For Approval ❑ As Requested ❑ Construction ❑ Bid ❑ For Your Use ® For Review and Comment ❑ Approved as Noted ❑ Remarks ction Taken: ❑ No Exceptions Taken ❑ 'Make Corrections Noted ❑ Am Ri Rejected -See Remarks 0 Approved as Submitted Other Remarks-1 \ ?0J6+ Cc: Bill Schoettelkotte, WCM Properties Signed: Branch Smith Weaver, Cameron From: Branch Smith <bsmith@paramounte-eng.com> Sent: Wednesday, September 21, 2016 9:21 PM To: Weaver, Cameron Subject: Fri express sw mtg Cameron, Can we reschedule this project to the following week? I was out sick today and need some more time on the submittal. Thanks Branch Sent Mobile 910-264-1071 ' �a qav-4'� bD) oil, CA`-47