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SW8190102_Current Permit_20201006
=r r y' M ROY COOPER �o ;` ' ernor MICHAEL S.REGAN Secret ry `\�QUsM , BRIAN` WRENN NORTH CAROLINA Director Environmental Quality October 6, 2020 Hoosier Daddy,LLC Attn:Lisa Beaman,Manager 1833 Avalon Ave. Wilmington,NC 28409 Subject: Approved Minor Modification Stormwater Permit No.SW8 190102 Fisher Landing Villas(formerly West Eleventh Street Multifamily) Southport,Brunswick County Dear Ms.Beaman: On July 16,2020,the Wilmington Regional Office of the Division of Energy,Mineral and Land Resources received and accepted a complete minor modification application for changes to the approved plans for Stormwater Management Permit Number SW8 190102. It has been determined that the nature of the proposed change meets the definition of a minor modification in that it does not result in an increase in the size of the permitted stormwater control measure(SCM)and does not increase the amount of built-upon area. The following minor modifications are included and covered by this permit: • Revision to building footprints and patio dimensions. The revised impervious breakdown has been included within the attached permit text. No changes were necessary for pond drainage area,geometry, or outlet configurations. We are forwarding you an approved copy of the modified plans for your files. Please replace the old plan sheet(s) with the new one(s). Please replace the previously issued permit with the revised permit, dated October 6,2020, attached. This revised permit does not impose new or different terms;it merely restates some of the previous terms to provide you with a better understanding of your obligations under the permit. Please be aware that all terms and conditions of the permit issued on February 21,2019 and modified as attached, remain in full force and effect. Please also understand that the approval of this minor modification to the subject State Stormwater Permit is done on a case-by-case basis. Any other changes to this project must be approved through this Office prior to construction.The approval of this minor modification does not preclude the permittee from complying with all other applicable statutes,rules,regulations or ordinances which may have jurisdiction over the proposed activity,and obtaining a permit or approval prior to construction. If you have any questions concerning this matter,please contact Steve Pusey in the Wilmington Regional Office at(910)796-7215 or steven.pusey@ncdenr.gov. Sincerely, t; r . Brian Wrenn,Director Division of Energy,Mineral and Land Resources Enclosures: Application Documents DES\sgp: \\\Stormwater\Permits&Projects\20191190102 HD\2020 10 permit_minor 190102 cc: Michael House,PE -Cape Fear Engineering Brunswick County Engineering Department Wilmington Regional Office Stormwater File o1' - North Carolina Department of Environmental Quality I Division of Energy.Mineral and Land Resources D Wilmington Regional Office i 127 Cardinal Drive Extension f Wilmington North Carolina 28405 1•10M1-1 CAROIlws Deparbsort a °"1m10*lft 910.796.7215 State Stormwater Management Systems Permit No. SW8 190102 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In compliance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations promulgated and adopted by the North Carolina Environmental Management Commission, including 15A NCAC 02H.1000 amended on January 1, 2017 (2017 Rules) (the "stormwater rules"), PERMISSION IS HEREBY GRANTED TO Hoosier Daddy, LLC West Eleventh Street Multifamily West Eleventh Street, Southport, Brunswick County FOR THE construction, management, operation and maintenance of built-upon area (BUA) and one (1) wet pond ("stormwater control measures" or"SCMs") as outlined in the application, approved stormwater management plans, supplement(s), calculations, operation and maintenance agreement, recorded documents, specifications, and other supporting data (the "approved plans and specifications") as attached and/or on file with and approved by the Division of Energy, Mineral and Land Resources (the "Division" or"DEMLR"). The project shall be constructed, operated, and maintained in accordance with these approved plans and specifications. The approved plans and specifications are incorporated by reference and are enforceable part of this permit. This permit shall be effective from the date of issuance until February 21, 2027 and shall be subject to the following specified conditions and limitations. The permit issued shall continue in force and effect until the permittee files a request with the Division for a permit modification, transfer, renewal, or rescission; however, these actions do not stay any condition. 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 for cause as allowed by the laws, rules, and regulations contained in Title 15A NCAC 2H.1000 and NCGS 143-215.1 et.al. 1. BUA REQUIREMENTS. The following requirements pertain to the BUA on this project: a. PROJECT BUA LIMITS. The maximum amount of BUA allowed for the entire project is 112,085 square feet. b. RUNOFF FROM BUA. The runoff from all BUA within the permitted drainage area of this project must continue to be directed into the permitted SCM. c. SCM BUA LIMITS. The SCM has been designed using the runoff treatment method to handle the runoff from 112,085 square feet of BUA within the delineated drainage area. The BUA for the future development is limited to 444 square feet (sf). Other BUA as follows: Buildings: 53,702 sf, Patios: 2454 sf, Roads / Parking: 18,960 sf, Driveways: 11,845, and Offsite: 24,680 sf. Page 1 of 5 State Stormwater Management Systems Permit No. SW8 190102 2. SCM REQUIREMENTS. The following requirements pertain to the SCMs on this project: a. SCM DESIGN. The SCM is permitted based on the design criteria presented in the sealed, signed and dated supplement and as shown in the approved plans and specifications. This SCM must be provided and maintained at the design condition. b. SCM DISCHARGE. The peak flow from the 10-year storm event shall not cause erosion downslope of the stormwater outlet discharge point. c. PLANTING PLAN. The SCM landscape planting plan shown in the approved plans shall be followed in its entirety during construction. After the plants are established, the operation and maintenance agreement must be followed. d. FOUNTAINS. At this time, a decorative spray fountain has not been proposed within the wet pond. Decorative spray fountains will be allowed in the wet pond if documentation is provided demonstrating that the proposed fountain will not cause resuspension of sediment within the pond or cause erosion of the pond side slopes. e. IRRIGATION. If the wet pond is to be used for irrigation, it is recommended that some water be maintained in the permanent pool, the vegetated shelf is planted with appropriate species that can handle fluctuating conditions, and human health issues are addressed. 3. VEGETATED SETBACKS. A 50-foot wide vegetative setback must be provided and maintained in grass or other vegetation adjacent to all surface waters as shown on the approved plans. The setback is measured horizontally from the normal pool elevation of impounded structures, from the top of bank of each side of streams or rivers, and from the mean high waterline of tidal waters, perpendicular to the shoreline. a. BUA IN THE VEGETATED SETBACK. BUA may not be added to the vegetated setback except as shown on the approved plans. b. RELEASE OF STORMWATER NOT TREATED IN AN SCM. Stormwater that is not treated in an SCM must be released at the edge of the vegetated setback and allowed to flow through the setback as dispersed flow. 4. RECORDED DOCUMENT REQUIREMENTS. The stormwater rules require the following documents to be recorded with the Office of the Register of Deeds. a. ACCESS AND/OR EASEMENTS. The entire stormwater conveyance system, including any SCMs, and maintenance accesses must be located in public rights-of-way, dedicated common areas that extend to the nearest public right-of-way, and/or permanent recorded easements that extend to the nearest public right-of-way for the purpose of inspection, operation, maintenance, and repair. b. OPERATION AND MAINTENANCE AGREEMENT. The operation and maintenance agreement must be recorded with the Office of the Register of Deeds. c. FINAL PLATS. The final recorded plats must reference the operation and maintenance agreement and must also show all public rights-of-way, dedicated common areas, and/or permanent drainage easements, in accordance with the approved plans. d. DEEDS. The permittee shall record deed restrictions and protective covenants prior to the issuance of a certificate of occupancy to ensure the permit conditions and the approved plans and specifications are maintained in perpetuity. Page 2 of 5 State Stormwater Management Systems Permit No. SW8 190102 5. CONSTRUCTION. During construction, erosion shall be kept to a minimum and any eroded areas of the on-site stormwater system will be repaired immediately. a. SCM OPERATIONAL PRIOR TO DEVELOPMENT. During construction, all operation and maintenance for the project shall follow the Erosion Control Plan requirements until the Sediment-Erosion Control devices are converted to SCMs. Once the device is converted to a SCM, the permittee shall provide and perform the operation and maintenance as outlined in the applicable section below. b. SCM RESTORATION. If one or more of the SCMs are used as an Erosion Control device and/or removed or destroyed during construction, it must be restored to the approved state stormwater design condition prior to close-out of the erosion control plan and/or project completion and/or transfer of the state stormwater permit. Upon restoration, a new or updated certification will be required for the SCM(s) and a copy must be submitted to the appropriate DEQ regional office. 6. MODIFICATIONS. No person or entity, including the permittee, shall alter any component shown in the approved plans and specifications. Prior to the construction of any modification to the approved plans, the permittee shall submit to the Director, and shall have received approval for modified plans, specifications, and calculations including, but not limited to, those listed below. For changes to the project or SCM that impact the certifications, a new or updated certification(s), as applicable, will be required and a copy must be submitted to the appropriate DEQ regional office upon completion of the modification. a. Any modification to the approved plans and specifications, regardless of size including the SCM(s), BUA, details, etc. b. Redesign or addition to the approved amount of BUA or to the drainage area. c. Further development, subdivision, acquisition, lease or sale of any, all or part of the project and/or property area as reported in the approved plans and specifications. d. Altering, modifying, removing, relocating, redirecting, regrading, or resizing of any component of the approved SCM(s), stormwater collection system and/or vegetative conveyance shown on the approved plan. e. The construction of any allocated future BUA. f. The construction of any permeable pavement, #57 stone area, public trails, or landscaping material to be considered a permeable surface that were not included in the approved plans and specifications. g. Other modifications as determined by the Director. 7. DESIGNER'S CERTIFICATION. Upon completion of the project, the permittee shall determine if the project is in compliance with the approved plans and take the necessary following actions: a. If the permittee determines that the project is in compliance with the approved plans, then within 45 days of completion, the permittee shall submit to the Division one hard copy and one electronic copy of the following: i. The completed and signed Designer's Certification provided in Attachment A noting any deviations from the approved plans and specifications. Deviations may require approval from the Division; ii. A copy of the recorded operation and maintenance agreement; iii. Unless already provided, a copy of the recorded deed restrictions and protective covenants; and iv. A copy of the recorded plat delineating the public rights-of-way, dedicated common areas and/or permanent recorded easements, when applicable. b. If the permittee determines that the project is not in compliance with the approved plans, the permittee shall submit an application to modify the permit within 30 days of completion of the project or provide a plan of action, with a timeline, to bring the site into compliance. Page 3 of 5 State Stormwater Management Systems Permit No. SW8 190102 8. OPERATION AND MAINTENANCE. The permittee shall provide and perform the operation and maintenance necessary, as listed in the signed operation and maintenance agreement, to assure that all components of the permitted on-site stormwater system function at the approved design condition. The approved operation and maintenance agreement must be followed in its entirety and maintenance must occur at the scheduled intervals. a. CORRECTIVE ACTIONS REQUIRED. If the facilities fail to perform satisfactorily, the permittee shall take immediate corrective actions. This includes actions required by this Division and the stormwater rules such as the construction of additional or replacement on- site stormwater systems. These additional or replacement measures shall receive a permit from the Division prior to construction. b. MAINTENANCE RECORDS. 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. 9. PERMIT RENEWAL. A permit renewal request must be submitted 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 as outlined in Title 15A NCAC 02H.1045(3). 10. CURRENT PERMITTEE NAME OR ADDRESS CHANGES. The permittee shall submit a completed Permit Information Update Application Form to the Division within 30 days to making any one or more of the following changes: a. A name change of the current permittee; b. A name change of the project; c. A mailing address change of the permittee. 11. TRANSFER. This permit is not transferable to any person or entity except after notice to and approval by the Director. Neither the sale of the project and/or property, in whole or in part, nor the conveyance of common area to a third party constitutes an approved transfer of the permit. a. TRANSFER REQUEST. The transfer request must include the appropriate application, documentation and the processing fee as outlined in Title 15A NCAC 02H.1045(2) and must be submitted upon occurrence of any one or more of the following events: i. The sale or conveyance of the project and/or property area in whole or in part; ii. Dissolution of the partnership, corporate, or LLC entity, subject to NCGS 55-14-05 or NCGS 57D-6-07 and (8); iii. Bankruptcy; iv. Foreclosure, subject to the requirements of Session Law 2013-121; b. TRANSFER INSPECTION. Prior to transfer of the permit, a file review and site inspection will be conducted by Division personnel to ensure the permit conditions have been met and that the project and the on-site stormwater system complies with the permit conditions. Records of maintenance activities performed to date may be requested. Projects not in compliance with the permit will not be transferred until all permit and/or general statute conditions are met. 12. COMPLIANCE. The permittee is responsible for complying with the terms and conditions of this permit and the approved plans and specifications until the Division approves the transfer request. a. REVIEWING AND MONITORING FOR COMPLIANCE. The permittee is responsible for verifying that the proposed BUA for the entire project does not exceed the maximum amount allowed by this permit. The permittee shall review and routinely monitor the project to ensure continued compliance with the conditions of the permit, the approved plans and specifications. Page 4 of 5 State Stormwater Management Systems Permit No. SW8 190102 b. APPROVED PLANS AND SPECIFICATIONS. A copy of this permit, approved plans, application, supplements, operation and maintenance agreement, all applicable recorded documents, and specifications shall be maintained on file by the permittee at all times. c. DIVISION ACCESS. The permittee grants Division Staff permission to enter the property during normal business hours to inspect all components of the permitted project. d. ENFORCEMENT. Any individual or entity found to be in noncompliance with the provisions of a stormwater management permit or the requirements of the stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21. e. OBTAINING COMPLIANCE. 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 modified plans and certification in writing to the Director that the changes have been made. f. OTHER PERMITS. The issuance of this permit does not preclude the permittee from obtaining and complying with any and all other permits or approvals that are required in order for this development to take place, as required by any statutes, rules, regulations, or ordinances, which are imposed by any other Local, State or Federal government agency having jurisdiction. Any activities undertaken at this site that cause a water quality violation or undertaken prior to receipt of the necessary permits or approvals to do so are considered violations of NCGS 143-215.1, and subject to enforcement procedures pursuant to NCGS 143-215.6. Permit modified and reissued this the 6th day of October 2020. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION atiotA .; Brian Wrenn, Director Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Permit Number SW8 190102 Page 5 of 5 Burd, Tina J From: Burd,Tina J Sent: Tuesday,July 21, 2020 4:09 PM To: e851isa@gmail.com; michaeLhouse@capefearengineering.com Subject: SW8 190102 - Fisher Landing Villas (formerly West 11th Street Multifamily) The Wilmington Regional Office of the Division of Energy, Mineral and Land Resources(Stormwater Section)accepted the Stormwater Permit Minor Modification Application for the subject project on July 16, 2020. The project has been assigned to Steven Pusey and you will be notified if additional information is needed. Please be advised that the construction of built-upon area may not commence until the Stormwater Permit is issued. Best Regards, Tina Burd Administrative Associate II Wilmington Regional Office Division of Environmental Assistance&Customer Service Phone 910-796-7215 NCDEQ Wilmington Regional Office 127 Cardinal Drive Ext. Wilmington, NC 28405 1:a,I co re,,Dondellce to 3:r6:;; t i:., w adiirf.”3s is North Carolina Public LrJw and.may be 1 Application Completeness Review Checklist(Non-Transfers)-Short Version Project Name: S1. e j2 (,.,Ah)Th 4 liLLA5 ({cN,,tit i1 044 ltk9Avt, Ku lDate Delivered to WIRI: 7/(6/2i,.ac Project County/Location: lB2J P.75vJ;c_x/5':.cl�4-1?o T BIMS Received/Accepted Date: 7//b/Zc,`p Rule(s): I017 Coastal 02008 Coastal 01995 Coastal BIMS Acknowledged Date-: 7/'I1 f ❑Phase II Universal 01988 Coastal { Permit Action: New ❑New Permit#2: Major Mod Minor Mod Renewal Existing Permit#: e) fco/0.z, Permit Type: Hfl/LD/1.0 Overall/HD&LD Combo Expriation [laze': Z,J 7 (' z7 r General Permit/Offsite/Exempt/Rescission 0Offsite to SW8: ••eveiopment Type: Commercial Residenti /Other EL of is in Master Permit? • Subdivided?: Subdivision or Single Lot wtoI�T(Ffte•iir�%-f DPE Cert on File? . Permittee Type&Documents Needed: Property Owner(s) DPurchaser Lessee ri FICA ❑Developer 0Viiabie? Viable? OViabie? ❑Viable? EViable? Deed !s+ rr-can• ®Purchase Agrnt Lease DEiection Minutes ❑Not Subdivided: t)eed • 05uhdroision Cc.rnrnon Area Deed Paperwork ®Application Fee: 05505{within 6mo) Check#(s): „121No Fee ®5upplernent2{I new form or for older forms: I original perSCM) DO&Ma I-u c..L4i-7 El5oils Report{MP or PP) oCalculations(signed/sealed) EiDeed Restrictions,if subdivided` Project Narrative OUSG5 Map(or on fileP) Subject to SA?: Y / N Subject to❑RW? Y / N Plans(2 Sets) ®PE Certification Electronic Copies DEasernents, Recorded(2017 Rules) NOTES: • 'Enter BIMS Acknowledged Date on this Sheet 2For New Projects-Enter New Permit#on Supplements& Deed Restiction Templates. 3lf w/in 6 months and they are requesting a mod,STOP Needs a renewal first. ll �— �^� .� EMA1ILED ENGINEER DATE: Comments: I CX � aP-I&i AP4C- [tCt f?t . REVIEWER NAME: 31 v - L5 G:WQ111Reference Library\Procedures\Checklists\Compiereness Review Checklist 2020 01 31 N DitR USE ONLY Date ecei ed Fee Paid Permit Number STORMWATER PERMITTING FORM 7: MINOR MODIFICATION Standard Permitting Program—No Fee for Minor Modification Express Permitting Program—See Express Fee Schedule Only complete applications packages will be accepted and reviewed. This form and the required items (with original signatures)must be sent to the appropriate DEMLR Regional Office, which can be determined by locating the project on the interactive online map at: http://deq.nc.gov/contact/regional-offices. This form is to only to be used by the current permittee to notify the Division of a minor modification. Pursuant to Rule 15A NCAC 02H.1002, a minor modification is a change to the project that: 1) does not increase the net built-upon area; and/or 2) does not change the size or design of the SCM(s). A. GENERAL INFORMATION 1. State Stormwater Permit Number: SW8 190102 2. Current Permit Holder's Company Name/Organization: Hoosier Daddy, LLC 3. Signing Official's Name: Lisa Beaman 4. Signing Official's Title: Manager 5. Mailing Address: 1833 Avalon Ave. City: Wilmington State: NC ZIP: 28409 6. Street Address(if different): : Same as above City: State: ZIP: 7. Phone: (252) 916-5030 Email: e851isa(c gmail.com 8. Describe the minor modifications that you are requesting, including any revised BUA allocations (attach additional pages or supporting tables similar to Section i V.10 of the original application, if needed): This modification is being requested to capture proposed site plan revisions to buildinq footprints and patio dimensions. The site is currently permitted for 112,085 sf of BUA and no additional BUA is being requested with this modification. The revised impervious breakdown has been included within the attached cover letter and revised pond calculations provided. No modification to pond drainage area, geometry or outlet configurations are required. B. SUBMITTAL REQUIREMENTS Please mark"Y"to confirm the items are included with this form. Please mark"X"if previously provided. If not applicable or not available, please mark N/A.: Y 1. Two hard copies(with original signatures) and one electronic copy of this completed form. Y 2. Two hard copies and one electronic copy of the revised plan sheets (must be a revision of the originally approved plan sheets). N/A 3. If there is reallocation of lot BUA, a copy of the revised recorded deed restrictions and protective covenants OR the proposed recorded deed restrictions and protective covenants documenting the changes and a signed agreement to provide the final recorded document. ; 'E Van N/A 4. !f applicable, the appropriate Express review fee. JUL. 1 6 2020 BY: Stormwater Permit Form 7 Minor Modification Page 1 of 2 July 14. 2017 C. CONTACT INFORMATION 1. The Design Professional who is authorized to provide information on the Applicant's behalf: Design Professional's Name: Michael House, P.E. Consulting Firm: Cape Fear Engineering, Inc. Mailing Address:151 Poole Rd. Suite 100 City:Belville State:NC Zip:28451 Phone: (910) 383-1044 Fax: (910) 383-1045 Email: michael.house(c�capefearengineerinq.com 2. [OPTIONAL] If you would like to designate another person to answer questions about the project: Name&Title: Organization: Mailing Address: City: State: Zip: Phone: ( ) Fax: ( ) Email: : D. CERTIFICATION OF PERMITTEE I, L6' ci 13ea.putn , the current permittee, certify that I have authorized the minor modifications listed in Section A and shown in the attached revised plan sheets. I further attest that this information is accurate and complete to the best o y knowled e. Signature: 0'. eVAVA441 Date:" 15-'2064) I, `I�(11'iGfiCia E, •4 c erne , a Notary Public for the State of Or'e1 Ch(©l)c C, , County of '(U'rTOW\C- , do hereby certify that Lla (2QOcr'lOn personally appeared before me this the 15 day of S .)1k , 20 ZO, and acknowledge the due execution of the forgoing instrument. Witness my hand and official seal, (Notary Seal) y `�OP uE!nn1At 4'kr. Ov NOTARY Z s Notary Signature'\__ " l @ . 0 Oc) ..-. 2 My commission expires o 21 \ -°' - - 1Vi4A, CO0 `` xP LAY f 6 ,� : 2 . BY BY• Stormwater Permit Form 7. Minor Modification Page 2 of 2 Oct 6 017 t-: intenance Project Name: West Eleventh Street Multifamily 94 1?OJO Project Location: Southport, NC 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&corresponding O&M tables will be added automatically): Bioretention Cell Quantity: Location(s): Dry Detention Basin Quantity: Location(s): Grassed Swale Quantity: Location(s): Green Roof Quantity: Location(s): Infiltration Basin Quantity: Location(s): Infiltration Trench Quantity: Location(s): Level SpreaderNFS Quantity: Location(s): Permeable Pavement Quantity: Location(s): Proprietary System Quantity: Location(s): Rainwater Harvesting Quantity: Location(s): Sand Filter Quantity: Location(s): Stormwater Wetland Quantity: Location(s): Wet Detention Basin Quantity: 1 Location(s): Northwestern portion of project site Disconnected Impervious Area Present: No Location(s): User Defined BMP Present: No Location(s): 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: Bryant Spencer Title&Organization: Authorized Agent,Hoosier Daddy,LLC Street address: 6025 Tarin Road City, state, zip: Wilmington,NC,28409 Phone number(s): 910-308-0804 Email: BryantSpencer@hhhomes.com liffp Signature: ,� Date: i t-F I, id jCo lleiPi n / , a Notary Public for the State of A/ dui County of 6nswia. , do hearby certify that -SAt%ctt_. personally appeared before me this 4 day of kepi i4A7 ld/9 and i acknowledge the due execution of the0erations and Maintenance Agreement. Witness my hand and official seal, j/,`G/T� /� i\0l111111111d ,„ GENE I) T JAN09 2019 Trit, .,2 i. " Pi $ STORM-F7 iiiitse4ljII%tt`0 1/3/2019 Version 1.4 O&M Manual Page 1 of 5 Seal My commission expires 3,/Z 7)2sZz.- JAN 0 0 2019 � It ®Y. STORM-EZ 1/3/2019 Version 1.4 O&M Manual Page 2 of 5 Wet Detention Pend d 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 it original design depth for 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 Prune according to best professional practices show that pruning is needed to maintain optimal plant health. Plants are dead, diseased or Determine the source of the problem: soils, hydrology, disease, etc. dying. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground 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-EZ JAN 0 9 2019 1/3/2019 Version 1.4 O&M Manual BY. Page 3 of 5 ifiet Detention Pond Makstenance " . .. 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 it original design sediment 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. STORM-EZ 1/3/2019 Version 1.4 O&M Manual Page 4 of 5 Wet Detention Pond Design Summary Wet Pond Diagram WET POND ID FOREBAY MAIN POND Pond 1 Permanent Pool El. 15 Permanent Pool El. 15 Temporary Pool El: 17.25 Temporary Pool El: 17.25 Pretreatment other No Clean Out Depth: 4 Clean Out Depth: 9 than forebay? Sediment Removal El: 11 Sediment Removal El: 6 I-las Veg. Filter? Yes Bottom Elevation: 10 Bottom Elevation: 5 11:( ?SO FE8 J STORM-EZ 2/14/2019 Version 1.4 O&M Manual Page 5 of 5 0 5IN E > 2Q # 1 I I ' I a) a a I..... , a, ' v o t : I 7 c 4 3 >C I fF I m • C C c Wus Q I ! k To N .! a E o jII fl tI I v)5P Eom ' Ec o w : .� o «� m` e E m m 3p a 03 .0 o t c o! p Z: a 'a� cc of m nO o ° o •-� °) co- E � Enwv G E nw2 =� al x� co E 0= a) o co o m as 0 ; .� ▪ TEmn I da 3♦1 Q V milli ® w > ? cr - v at ma 0 E m �. 0) "'7I SF f i r` • Q' c H m a o o 0 o m no I I a 20I EI1m . o m 4 ai OF me c mw m t ! CO 1 I I l i l z l .4-, 51 .�I E m E •`' c m .� ycc W I 'in i �? m a m D) 1= .212 m (7 1 I I m. CS a) a � = m a) E0 a0 • UI n ameWa) - w ' w.• I a Ec . _cc � E ° m> a o o @w a o iS ✓ II t ) ! I I• 2 }E o : II o N -' al c.)i o J o 1 q a.; a m is O • U) Ica_ • • E lc 0 zl c 0+ O c - .- , 6: ► I I I 40. ou -4, 8 c a) I • fi I I E i c) i \ o 3 ( I col I je o id ' 4 7 • I ILI!' o I g d '�. i. 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N m 1 �'' m s - ¢ a.. a E'r- 'j�z N w; ❑ Q` A;3' m,>' a 3 W• w w'; ❑ Q; ❑ > wl ❑ ❑ ❑' 0 >,0 m ¢; O O O O` m 0 IO E7 1tg i N m rt rt N N N N N' ED I IO I� 2O �O �i7 LL'1'.!O1' m 7 1 C o.r �:F;m'a a t9 rn N ,E7 # # #• #, #r# # # #, # #, #, #. # # 7t # # # at: # #'� a.m N 3 0 N O N N '-I n 2 111.1 rl N > N V W �m C 1 'W� VJ W a) W a) N a S 2 5 b I 2 II a a 2 Z O a ° wg / ,/1,iv S state stormwater Management /� k/ C/ Dr;�/� Permit No. SW8 190102 AS-BUILT DESIGNER'S CERTIFICATION FOR WET DETENTION POND PROJECT I hereby state that I am a licensed professional and I certify by my signature and seal below,that 1 have observed the construction of the project named above to the best of my abilities with all due care and diligence, and that the project meets all of the MDC found in NCAC 0211.1053, in accordance with the permit documents, plans and specifications on file with or provided to the Division, except as noted on the "AS-BUIL1T"drawings, such that the intent of the stormwater rules and the general statutes has been preserved_ Check here if this is a partial certification. Section/phase/SCM ? ldeit Check here if this is part of a Fast-Track As-Built Package Submittal per .1044(3). Check here if the Designer did not observe the construction,but is certifying the project. fttla Lsllos !warded Check here if pictures of the SCM are provided. i Printed NamejI I CAASU-10VSF Signature _ NC Registration Number 116460 Date 5/12/Z.o SEAL: +y`je`e'�ai�e;�' Consultant's Mailina Address: ��®�'�� �� ur g� is) mole s. , S4C 10o JUL 0 6 ?A�0 w 4O $ Ste, rr 3� S. City/State/ZIPF llvill,o/ i 0151 BY: 046980 �' la % 3 Phone Number No) 3g3 - loot ��f4�y G N. . 4' Consultant's Email address: I'1 i GrIl fil.k►ovse ► Cotpe-kev-e,no i neen A .Cde&1 Circle N if the as-built value differs from the Plan/permit. If N is circled, provide an explanation on page 2 C?N./E = not evaluated(provide explanation on page 2) 3N/A = not applicable to this project or SCM. This Certification must be completed in conjunction with the General MDC certification under NCAC 02H.1050 I Consultant's Certification(MDC .1053) OAs-built (NT/E 3N/A A. Forebay/Depths/Fountain 1. The available Sediment storage is consistent with the approved or N • plan and is a minimum of 6 in. ty 2. Water flow over the forebay berm into the main pond occurs at a ; j� or ti non-erosive velocity. (j' • 3. The provided Forebay Volume is 15%-20% of the main pool volume. Y, or N 4. The Forebay entrance elevation is deeper than the exit elevation ; 0 or into the pond. 5. The Average Design Depth of the main pond below the . permanent pool elevation is consistent with the permitted value.7 ;: C• or N • • 6. Fountain documentation is provided. 1 Y or N NPt' B. Side slopes/Banks/Vegetated Shelf 1. The width of the Vegetated Shelf is consistent with the approved l0 plans and is a minimum of 6 feet. or • 2. The slope of the Vegetated Shelf is consistent with the approved or N plans and is no steeper than 6:l. i • C. As-built Main Pool/Areas/Volumes/Elevations • 1. The permanent pool surface area provided is consistent with the • • permitted value. ' or \ • 2. The Temporary Pool Volume provided is consistent with the or ,` • permitted value. _ 3. The permanent pool elevation is consistent with the permitted or '` value. 4. The temporary pool elevation is consistent with the permitted , (,1i or N • value. Page 5 of 6 State Stormwater Management Permit No. SW8 190102 OO As-built C N/E ! c N/A D. Inlets/Outlet/Drawdown I. The design volume draws down in 2-5 days. ; tP or N 2. The size of the Orifice is consistent with the permitted value. or N ' ' 3. A trash rack is provided on the outlet structure. or N ' 4. Hydrologic impacts to the receiving channel are minimized from 0 or N the I yr 24 hr storm discharge? • 5. The inlets and the outlet location are situated per the approved ,�,� or N plan and avoid short-circuiting. (� E. Vegetation { I 1. The vegetated shelf has been planted with a minimum of 3 or N _ diverse species. _ 2. The vegetated shelf plant density is consistent with the approved T _ plans and is no less than 50 plants per 200 sf or no less than 24 l.) or N inches on center. Provide an explanation for every MDC that was not met, and for every item marked "N/A" or"N/E" below. Attach additional pages as needed: R JUL 0 6 2020 ' ` 4 BY: Page 6 of 6 CAPE FEAR JUL 0 6 2020 ENGINEERING 151 Poole Rd.,Scnte 100;Belville,NC,28451 T TEL(910)383-1044;FAX(910)383-1045 ►vww capefearengrneenng.com Transmittal To NCDEQ Date: July 6, 2020 127 Cardinal Drive Extension File: 440-011 "36" Wilmington, NC 28405 Subject: West 11th Street Multifamily Southport, NC Attn: SW8 190102 Certification ❑ As Requested ❑ For Your Files El For Distribution ® For your Review/Action/Approval Quantity Drawing No. Description 1 Copy Designer's Certification for Wet Detention Pond Cape Fear Engineering, Inc CC: File File: 440-011 "36" Signed: Michael House, P.E. Received By: Date: P:1440-00 H&H Homes1440-011 Southport W.MF Eng\ADMIN\STORM\NCDEQ Permit\Certification\2020-07-06 TRANS-NCDEQ.doc