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HomeMy WebLinkAboutSW8880910_HISTORICAL FILE_20160115STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO SW8 g g 0°I l0 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 20W 0115 YYYYMMDD PAT MCCRORY Gommor DONALD R VAN DER VAART Energy, Mmeral and Land Resources ENVIRONMENTAL QUALITY January 15, 2016 Mr Rene Stiegelman, President MA Works, Inc 2635 Northchase Pkwy, SE Wilmington, NC 28405 Subject- State Stormwater Management Permit No SW8 880910 IKA Works North America Expansion and Renovation High Density Wet Detention Pond Project New Hanover County Dear Mr Stlegelman Secretary TRACY DAVIS Director The Wilmington Regional Office received a complete, modified Stormwater Management Permit Application for IKA Works North America Expansion and Renovation on January 11, 2016 Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H 1000 and Session Law 2008-211, as applicable We are forwarding Permit No SW8 880910 dated January 15, 2016, for the construction, operation and maintenance of the BMP's and built -upon areas associated with the subject project This permit shall be effective from the date of issuance until January 25, 2020, 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 BMP(s), recordation of deed restrictions, procedures for changes of 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 transfer the permit, or to renew the permit, will result in future compliance problems The following modifications are included and covered by this permit • The expansion of the project on to the adjoining property, which was previously permitted under SW8 130724, which has been rescinded effective January 15, 2016 The desire is to now more closely connect the development on these two parcels • The expansion of the existing wet detention pond Please note that the original design was based on the NGVD29 datum which is approximately 1 foot higher than NAVD88, which is why the elevations appear 1 foot lower than initial permit • The expansion of the drainage area for the wet detention pond to handle both the additional parcel as well as offsite runoff that cannot be routed around the stormwater collection system The offsrte areas have been considered at the maximum build out potential 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 OAH within thirty (30) days of receipt of this permit You should contact the OAH 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 NCOAH corn Unless such demands are made this permit shall be final and binding State of North Carolina I Enwonmental Quality I Energy Mmetal and Land Resources 127 Cardinal Drive E# non I Wilmington, NC 28405 910 796 7215 T 1 910 350 2004 F I htm floortalnedemord b/Ir/ State Stormwater Permit No SW8 880910 Page 2 of 2 If you have any questions, or need additional information concerning this matter, please contact Christine Hall in the Wilmington Regional Office, at (910) 796-7215 Sincerely, *IY�r ,Director Division of Energy, Mineral and Land Resources GDS/canh \\\Stormwater\Permits & Pro9ects\1988\880910 HD\2016 01 permit 880910 cc Rick Moore, McKim & Creed, Inc New Hanover County Building Inspections Beth E Wethenll, New Hanover County Engineering Wilmington Regional Office Stormwater File State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources 127 Cardinal Dave Fxtenvon I Wdmmgton NC 29405 910 796 7215 T 1910 3502004 F I httn//oortal.ncdeur.orn/web/Ir/ State Stormwater Management Systems Permit No SW8 880910 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 IKA Works, Inc IKA Works North American Expansion and Renovation 2635 Northchase Pkwy SE, Wilmington, New Hanover County FOR THE construction, operation and maintenance of one (1) wet detention pond in compliance with the provisions of 15A NCAC 2H 1000 and Session Law 2008-211, as applicable (hereafter collectively 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 January 25, 2020, and shall be subject to the following specified conditions and limitations I DESIGN STANDARDS 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 18 of this permit The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system The stormwater control has been designed to handle the runoff from 344,541 square feet of impervious area 3 The maximum built -upon area allowed for the entire project is 344,541 square feet 4 The drainage area will be limited to the amount of built -upon area indicated in Sections 12 and 18 of this permit, and per approved plans This permit does not provide any allocation of built -upon area for future development 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 6 A vegetated filter strip is not required for this pond as it has been designed for a 90% total suspended solids removal efficiency Page 1 of 7 State Stormwater Management Systems Permit No SW8 880910 7 All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans Access to the stormwater facilities for inspection and maintenance shall be maintained via appropriate recorded easements at all times The following design criteria have been permitted for the wet detention pond and must be provided and maintained at the design condition a Drainage Area, acres Onsite, subject to 15A NCAC 2H 1000, Onsite, subject to SL 2008-211, ft2 Offsite, subject to 15A NCAC 2H 1000, Offsite, subject to SL 2008-211, ft2 b Total Impervious Surfaces, ft2 Onsite, subject to 15A NCAC 2H 1000, Onsite, subject to SL 2008-211, ft2 Offsite, subject to 15A NCAC 2H 1000, Offsite, subject to SL 2008-211, ft2 c Design Storm 15A NCAC 2H 1000, inches SL 2008-211,inches d Pond Design Depth, feet e TSS removal efficiency f Permanent Pool Elevation, FMSL g Permanent Pool Surface Area, ft2 h Temporary Storage Volume, ft3 i Temporary Storage Elevation, FMSL j Controlling Orifice k Orifice flowrate, cfs I Permanent Pool Volume, ft3 m Permitted Forebay Volume, ft3 n Fountain Horsepower o Receiving Stream/River Basin p Stream Index Number q Classification of Water Body II SCHEDULE OF COMPLIANCE 1608 ft2 186,214 178,605 ft2 235,834 99,906 344,541 ft2 99,207 116,436 ft2 78,945 49,953 10 15 30 90% 3000 40,537 35,637 3080 3 0" 0 pipe 11 86,863 17,252 1/3 Smith Creek / Cape Fear 18-74-63 "C, Sw" 1 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 During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility 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 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 880910 6 If the permanent pool volume 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 1/3 horsepower 7 The facilities shall be constructed as shown on the approved plans This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation Any deviations from the approved plans and specifications must be noted on the Certification A modification may be required for those deviations 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 10 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 11 Prior to transfer of the permit, the stormwater facilities will be inspected by Division personnel The protect 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 Approved plans 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 Page 3 of 7 State Stormwater Management Systems Permit No SW8 880910 III GENERAL CONDITIONS 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 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, 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, e Dissolution of the partnership or corporate entity, f A name change of the current permittee, g A name change of the project, h A mailing address change of the permittee, 2 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 3 Any individual or entity found to be in noncompliance with the provisions of this storrmwater management permit or the requirements of the Stormwater rules is subject to enforcement procedures as set forth in G S 143 Article 21 4 The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction 5 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 6 The permittee grants Division 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 remains 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 Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual 9 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 Page 4 of 7 State Stormwater Management Systems Permit No SW8 880910 10 The permittee shall submit a permit renewal request at least 180 days prior to the expiration date of this permit The renewal request must include the appropriate documentation and the processing fee Permit modified and reissued this the 15t' day of January, 2016 CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION LO)C-z-7 i( Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Permit Number SW8 880910 Page 5 of 7 State Stormwater Management Systems Permit No SW8 880910 IKA Works Stormwater Permit No SW8 880910 New Hanover 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 880910 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 drams to the system 4 All roof drams 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 Regional Office New Hanover County Building Inspections Page 7 of 7 >( DEMLR USE ONLY Date Received Fee Paid Permit Number zz/xi— 1-5-4;6y gge52 V1 Applicable Rules ❑ Coastal SW - f595 ❑ Coastal W - 2008 ❑ Ph II - Post Construction (select all that apply) ❑ Non -Coastal SW- HQW/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 be photocopied for use as an original GENERAL INFORMATION 1 Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc ) IKA Works North American Expansion and Renovation 2 Location of Project (street address) 2635 Northchase Parkway SE City Wilmmgton County New Hanover Zip 28405 3 Directions to project (from nearest major intersection) From the intersection of North College Road and Murrayville Road, travel north on N College Road approximately 1 mile Turn right on to Northchase Parkway E The site is approximately 018 miles on 4 Latitude 34' 18' 12" N Longitude 77' 52' 27" W of the main entrance to the project II PERMIT INFORMATION 1 a Specify whether project is (check one) ❑New ®Modification ❑ Renewal w/ Modificationt tReneioals troth modifications also requires SWU-102 - Renewal Application Form b If this application is being submitted as the result of a modification to an existing permit, list the existing permit numberSW8 880910 , its issue date (if known)lanuary 25, 2012 , and the status of construction ❑Not Started ❑Partially Completed* N Completed* *provide a designer's certification 2 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 _ ❑NPDES Industrial Stormwater ❑404/401 Permit Proposed Impacts ac of Disturbed Area b If any of these permits have already been acquired please provide the Project Name, Project/Permit issue date and the type of each permit 5 Is the project located within 5 miles of a public airport? ❑No NYes If yes, see S L 2012-200, Part VI htta //aortal ncdenr org/web/Ir/rules-and-reLulations Form SWU-101 Version Oct 31, 2013 Page I of 6 A h� 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 protect) Applicant/Organization IKA_W_orks, Inc t� Signing Official & Title Refika Bilgic, Managing Director '�i cVx%N "T �ehp i pqQ` MctdQ��(PStrJt+ v� b Contact information for person listed in item la above Street Address 2635 Northchase Parkway SE City Wilmington State NC Zip 28405 Mailing Address (if applicable) Same as above City State Zip Phone (910 ) 452-7059 Ext253 Fax (910 ) 452-7693 Email refika bilgic@ika net 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 mformabon for person listed in item 2a above Street Address City Mailing Address (if applicable) State Zip City State — CEII(Pa Phone ( ) Fax Email BY 3 a (Optional) Print the name and title of another contact such as the projects construction superv— isor c rTer person who can answer questions about the project Other Contact Person/Organization IKA Works, Inc Signing Official & Title Refika Bilgic, Managing Director b Contact information for person listed in item 3a above Mailing Address 2635 Northchase Parkway SE City Wilmington State NC Zip 28405 Phone (910 ) 452-7059 Ext253 Email refika bilgic@lka net Fax (910 ) 452-7693 4 Local jurisdiction for building permits New Hanover County Point of Contact Tony Roberts Phone # (910 ) 798-7308 Form SWU-101 Version Oct 31, 2013 Page 2 of 6 IV PROJECT INFORMATION 1 In the space provided below, bnefly summarize how the stormwater runoff will be treated Existing and Proposed BUA will be be conveyed through a stormwater collection system or sheetflow to the proposed wet detention basin 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 Pernut 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 8 45 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 Area" 8 45 acres Total project area shall be calculated to exclude the followingg the normal poot of impounded structures, the mea between the banks of streams and rivers, the area below the NormHigh Wal Hi ater (NFIW) line or Mean High Water (MHIM tine, and coastal wetlands landward from the NFIW (a)MHW) line The resultantpproject area is used to calculate overall percent built upon area (BUA) Non -coastal uietlards landward of the NHW (m MHW) tine )iiay be included in the total project area 8 Project percent of impervious area (Total Impervious Area / Total Project Area) X 100 = 4918 % 9 How many drainage areas does the project have?1 (For high density, count I for each proposed engineered stormwater BMP I -or low 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 Drama a Area 1 Drama a Area _ Drama a Area Drainage Area _ Receiving Stream Name Smith Creek Stream Class * C,Sw 1E Stream Index Number * 18-74-63 f Total Drainage Area (so 700,559 1 N 9 ZUlb On -site Drainage Area (so 364,819 Off -site Drainage Area (so 335,740 IN Proposed Impervious Area' (so 344,541 % Impervious Area** (total) 4918 Impervious" Surface Area' Drama a Area 1 Drainage Area ' iDrama a Area _ Drainage Area_ On -site Buildings/Lots (so 36,000 „ On -site Streets (so 0 "' On -site Parking (so 66,514MMA On -site Sidewalks (so 2,809 v Other on -site (so -EA Future (so Off -site (so 128,898 1 r Existing BUA*"* (so 110,320 ` Total (sf) 344,541 ""iuu' "'� " Stream Class and Index Number can be determined at h //natal ncdenr o� ioeb/ma/Ve%,rtldas"ificahnns '* linJwrvious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidczoalks, gravel areas, etc 'Report only that amount of existing BUA that will remain after development Do not report any existing BUA that is to be removed and which will be replaced by new BUA Form SWU-101 Version Oct 31, 2013 Page 3 of 6 Project Name IKA Works, Inc Project Number 1683-0003 Date 1/6/2016 Subject Drainage Area and Impervious Area Accounting Drainage Area `Subject to 1" Subject to 1 5" Total Onsite 186,214 178,605 364,819 Mite 235,834 99,906 335,740 Total 422,048 278,511 700,559 Impervious Area 1 Onsite 99,207 116,436 215,643 Mite 78,945 49,953 128,898 Total 178,152 166,389 344,541 Drainage Area impervious Area _ Onsite 1"y Onsite 1" Ong IKA minus 186,214 Existing 1988 IKA 99,207 2012 Expansion Onsite -1 5" Onsite -1 5" 2012 Expansion 11,113 2012 add 11,113 2015 Expansion 167,492 2015 add 105,323 Offsite 1" Offsite 1" Residential 117,603 Residential 35,281 Roads -R/W 99,752 Roads 39,253 Dentist 18,479 Dentist 4,411 Mite 1 5" Offsite 1 5" church 35,088 church 17,544 medical center 64,818 medical center 32,409 n%=CF t11ltt j JAN 1 1 2016 BY 11 How was the off -site impervious area listed above determined? Provide documentation Aerial photos, field visits and New Hanover County GIS P_rolects in Union County Contact DEAlLR Central Office smjjto check if the pi oject is located within a Threatened d Endangered Species watershed that nrnv be subject to moi a sit urgent stoi nni,ater requu ements as pet 15A NCAC 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 ncdeni org/web/wq/ws/su/bmp-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 littLi //portal ncdenr org/web/wq/ws/su/statesw/forms dots 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 http //portal ncdenr org/web/wq/ws/su/niaI2s ) 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 oig/web/wq/ws/su/statesw/forms_docs itials 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 01A Form (if required as per Part VIl below) 3 Original of the applicable Supplement Forrn(s) (sealed, signed and dated) and O&M 'L/sue__ - agreement(s) for each BMP 4 po 4 Permit application processing fee of $5 pailable to NCDENR (For an Express review, refer to lift / /www envhelp org[pa¢es/o storexyress 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 aim 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 _ W1 receiving stream drams to class SA waters within 1/2 mile of the site boundary, include the'/z mile radius the map 7 Sealed, signed and dated calculations (one copy) 8 1 wo sets of plans folded to 8 5" x 14" (sealed, signed, & dated), including 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 elevation of impounded structures, the banks of streams and rivers, the MHW or NHW lme of tidal waters, and any coastal wetlands landward of the MHW or NHW linesLU • Delineate the vegetated buffer landward from the normal pool elevation of impounded L91) structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters > cw i Dimensioned property/project boundary with bearings & distances 1'' u1 I Site Layout with all BUA identified and dimensioned W P k Existing contours, proposed contours, spot elevations, finished floor elevations V I Details of roads, drainage features, collection systems, and stormwater control measures LAJ G on 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 co 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) Form SWU-101 Version Oct 31, 2013 Page 4 of p Vegetated buffers (where required) ^ 9 Copy of any applicable soils report with the associated SHWT elevations (Please identify 1�r/�^'� 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"xll" copy of the NRCS County Soils map with the project area clearly delineated For projects with infdtrahon 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 Sdiedide a site visit for DEMLR to verify the SHWT prior to submittal, (910) 796-7378 ) 10 A copy of the most current property deed Deed book 5682/5006 Page No 0141 /1223 11 For con porations 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 la, 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 http //www secretary state nc us/Corporations/CSearch aspxx VII DEED RESTRICTIONS AND PROTECTIVE COVENANTS 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 http //portal nedenr org/web/Ir/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 websrte, 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 individual and/or firm (such as a consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as addressing requests for additional information) Consulting Engineer Richard A Moore, PE Consulting Firm McKim & Creed, Inc Mailing Address 243 North Front Street City Wilmington State NC Zip 28401 Phone (910 ) 343-1048 Email ramoore®mckimcreed com Fax (910 ) 251-8282 IX PROPERTY OWNER AUTHORIZATION (if Contact Information, iteni 2 has been filled out, complete this section) I, (print or hjpe name of person listed 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 la) with (print or type nante of organization listed in Contact Information, mein l a) 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 nECEI V E DEC 152015 BY Form SWU-101 Version Oct 31, 2013 Page 5 of 6 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 143-2151 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 a Notary Public for the State of do hereby certify that before me this _ day of Date County of personally appeared and acknowledge the due execution of the application for a stormwater permit Witness my hand and official seal, SEAL My commission X APPLICANT'S CERTIFICATION I, (pnnt or type nanie of person listed in Contact Infortnatzon, item ln) Re aka 1311,gtc, Mannguig Director 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 i 1 yy do beerreeby certify that before me this air of � a stormwater permit Witness my hand and official Form SWU-101 Version Oct 31, 2013 SEAL Date f z - / f /,I State of n County of 1 JL4 It,- personally appeared Ige the due execution of the application for and A, or My commission expires o I I V' f L�y l I 14 r CEIVE DEC 15 2015 Page 6 of 6 BY MEMORY TRANSMISSION REPORT TIME 01-19-2016 14 42 FAX NO 1 NAME FILE NO DATE TO DOCUMENT PAGES START TIME END TIME PAGES SENT STATUS 651 01 19 14 40 e 92518282 10 O1 19 14 40 O1 19 14 42 10 OK `SUCCESSFUL TX NOTICE' Stun ai NntYh Carolina MpafYmeat oT 6nHemmeataf QnaHty wumtaataa R�mw onkn l'btJkfaGlotT. (:oraraar Fl\X COVER SHi:ST oono/J Ii vm. de vmOrt see_rctn.y Dafa /�/ 9 /�G No Pages (otcl corer) / To � �/�///✓/o/ �i%00/C- F�.a.t Is_�luun Fax ZS/'�'O ��� Fax to1m 350-2009 127 Catd.pnl Dtive E[fufuon. W f... --- NC 26 5 /bane BmDHfYa State of North Carolina Department of Environmental Quality Wilmington Regional Office Pat%Crory, Governor FAX COVER SHEET Donald R van der Vaart, Secretary Date/J�/ j`/ No Pages (excl cover) / To �7/� From JoCasmer Co //%I1 fz0/�/;,1"2 f t Phone (910) 796-7336 Fax -6 / ` O 2 Fax (910) 350-2004 Re L-JD ✓ / /7 /!'7 Cr i Y C � - 127 Cardmal Dnve Extension, Wilmington, NC 29405 • (910) 796-7215 9 An Equal Opportunity Afinmative Actlnn EmPloyer MEMORY TRANSMISSION REPORT i TIME 01-19-2016 14 44 FAX NO 1 NAME FILE NO 652 DATE 01 19 14 41 TO a 94527693 DOCUMENT PAGES 10 START TIME 01 19 14 42 END TIME 01 19 14 44 PAGES SENT 10 STATUS OK —SUCCESSFUL TX NOTICE' ' S[a[c of North Carol.na Mpa.Ymevt nr EVHwaumm.W QuaYty wnm.nOan maan.� o.ea[r FM At'aL'laaY� (:oYervor / FAX COVER 3HFET Lonv/dR wv day Vr.f 6ccrafary Uaic �9' �b No Pa . (.1 cover) nn _L—it'"A /lam /�Ys - � <Sl" ��O 9io o• .., �— Iis[fmY®- w.mipp[un.....I . (9W) ") 111 . M fl —' O.ryovvn.b AlHnvnt. ve Actlon Bv+PaoYg .r State of North Carolina Department of Environmental Quality Wilmington Regional Office Pad McCrory, Governor FAX COVER SHEET Donald R van der Vow-4 Secretary Date �/% �7 "/tz,;, No Pages (excl cover) ToJT/E9cL/`/11;7.J From JoCasmer Co n �Zln �� S Phone (910) 796-7336 Fax % �� — %�i Fax (910) 350-2004 Re r/r 74 . c_ 127 Cardinal Drive Extension, Wilmington, NC 28405 a (910) 796-7215 a An Equal Opportunity Affirmative Action Employer v,McIQM&CREED HAND DELIVER 7O NCDENR Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 ATTENMON Christine Hall WE ARE SENDING ® Originals ® Prints n Suecifications Calculations LETTER OF TRANSMITTAL DATE January 11, 2016 PROJECT NO 1683-0003 TASK NO 10 RE IKA Works, Inc Western Expansion TRANSMITTAL NO PAGE 1 OF 1 ❑ Shop Drawings ❑ Samples n Other — Quantity Drawing No Rev Description Status Issue Status Code A Preliminary B Fabrication Only C For Information D Bid E Construction F For Review & Comments G For Approval H See Remarks Action Status Code 1 No Exceptions Taken 2 Make Corrections Noted 3 Other 4 Amend & Resubmit 5 Rejected -See Remarks REMARKS 243 NORTH FRONT STREET WILMINGTON NC 28401 (910) 343-1 D48 FAX (910) 251-8282 cc ,McKIM & CREED, Inc. Signed OT 4 Richard A Moore, PE, LEED AP Senior Project Manager Richard (Rick) A. Moore From: Richard (Rick) A Moore Sent: Wednesday, January 06, 2016 3 54 PM To: 'Hall, Christine' Cc Weaver, Cameron Subject- RE request for additional info - IKA, SW8 880910 Attachments IKA - Forms and Calcs pdf, DA Map with BUA Summary info pdf, 10_CG502 pdf, 03 _CS101 pdf, 06_CG101 pdf Christine - Please see below and the attached for my responses to your questions I know it seems messy - if a phone call will help, please try my mobile at 386-6359 Also glad to come meet with you to discuss if necessary Changes on the attached plans CS-101 shows the revised parking layout - loss of 1 space - and slight change to permanent pool CG-101 shows the revised grading plan with lost parking space and slightly increased pond size CG-501 is the revised pond detail sheet (only the pond itself changed) Please let me know if you agree with the changes - if you do, I will have hardcopy delivered for your records Otherwise, let me know what additional questions or comments you may have Thank you, Rick nE G E From. Hall, Christine [madto Christine HalKalncdenr gov] V Sent, Monday, January 04, 2016 4 52 PM By To- Richard (Rick) A Moore Cc: Weaver, Cameron Subject: RE request for additional info - IKA, SW8 880910 Rick, I've had a chance to look through the items submitted on December 30a' in response to the Request for Additional Information dated December 18, 2105 1 have a few follow up questions / concerns relating to the revised items submitted in response to Item 1 of this request Per 15A NCAC 02H 1003(g)(7) 1 It appears that the reported on -site built -upon area as well as the reported onsite and offsite drainage areas have decreased However, it doesn't appear that the onsite layout or drainage area have changed Can you explain the decreases? [RAM] It appears that the total onsite and offsite drainage area numbers listed in our DA map were not changed from our first attempted express submittal (this submittal that wasn't accepted for review) Our redesign between that time and the accepted express submittal incorporated an offsite bypass and revised drainage areas based upon offsite permit file reviews However the total drainage areas on the DA map mistakenly were not updated The revised DA plan sheet is attached [RAM] The onsite built upon areas are a little more difficult to explain - and I understand your confusion and desire to make sure this is correct because I'm having a hard time making all the numbers work In an effort to eliminate the negative numbers in the application on the first submittal, I have now reported all currently existing BUA at IKA as "existing" - this includes the 1988 permitted BUA of 99,207 5F and the "net add" in 2012 of 11,113 SF for the total existing reported of 110,320 SF I then measured everything in AutoCAD to ensure 100% capture of all proposed BUA I measured again this morning and realized there was a "miss" of pavement - apparently the edge of pavement line was used to come up with the 59,931 SF of onsite parking I have also incorporated the loss of 1 parking space in the NW corner by the driveway (NHC Planning required this loss due to landscaping requirements) Therefore I have revised the onsite parking number to 66,514 SF to reflect the area to the back of curb This resulted in a required treatment volume slightly higher than what we had proposed - therefore we regraded the southern side of the pond to gain the additional treatment volume required Revised application, supplement, BMP calc sheets and the revised plan sheets are attached I'm not 100% sure that you can recreate the numbers previously submitted but I can tell you that the onsite existing BUA (what is on the ground today) and the onsite proposed BUA in the attached are accurate based upon our cad files and have been triple checked for accuracy 2 The revised calculations appear to use a composite percent impervious value to determine a single Rv value This is atypical from the method often used to determine the minimum required storage volume when multiple design storms are applied Often, the Rv value is determined for each design storm based on the percent impervious for each portion of the drainage area Please demonstrate that the method used results in a more conservative approach per 15A NCAC 02H 1008(c)(1) [RAM] Please see the attached revised calculations showing the Rv associated with a 1" rainfall depth and 1 5" rainfall depth as detailed in previously submitted accounting of the areas required for each storm This did result in a slightly higher required treatment volume and the changes discussed in Item 1 above address it A revised SA/DA ratio was also calculated based on the revised BUA and a composite Rv number and applicable forms/calcs have been updated It appears that the permanent pool volume of the pond is being determined based on the current design standards by excluding the 1 foot depth of sediment accumulation Based on the previous agreement for expanding this pond, the permanent pool design, including the determination of the permanent pool volume, was "vested" under the older design criteria Please confirm that permanent pool design criteria (depth, volume, sediment removal) are consistent with one set of guidance - either the older design criteria or the new design criteria [RAM] Please see the revised calculations and supplements showing the revised permanent pool volume with removal of the sediment storage I zeroed out the sediment storage in the calculations to reflect this change This also resulted in a change to the forebay size, the revised plan sheet showing the larger forebay is attached for your review I'll be happy to put these items into a formal request for additional information, if that would be helpful Please let me know if you have any questions Thanks) Christine Christine (Nelson) 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 chnsbne hall(a)ncdenr gov 127 Cardinal Drive Ext Wilmington, NC 28405 -5::�'Nothm9 Compares ecoEIV E JAP1 1 1 2016 BY �� Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties From Richard (Rick) A Moore [madto RAMoore@mckimcreed coml Sent Wednesday, December 30, 2015 114 PM To Hall, Christine <Chnstme Hall@ncdenr gov> Subject RE request for additional info - IKA, SW8 880910 Thanks Christine - I have adjusted everything and am dropping it off this afternoon Let me know if you have any other comments when you review it and we will get them addressed ASAPI Happy New Year to you - Rick From. Hall, Christine [mailto Chnstme HallCla ncdenr govl Sent: Wednesday, December 30, 2015 11 08 AM To: Richard (Rick) A Moore Subject RE request for additional info - IKA, SW8 880910 Rick, As I was writing this e-mail, I thought I would call to discuss I am battling a cold so my head is a bit foggy and it seemed easier to talk through this than trying to write it down, but you were away from your desk and the system did not allow me to leave a voice mad message On that note, here it goes Is the 17 6% considering the entire pond DA or just for the contnbutmg DA? In my letter, I was trying to advise that the forebay only needs to be sized for the contributing drainage area If I remember correctly, there is a portion of drainage area that is previously permitted to directly discharge into the pond without a forebay That is why I referred you to that section of the BMP manual, to help design a forebay for just the contributing drainage area Depending on how the numbers work out, I would just write underneath the "error" a justification that the forebay is only sized for the new contributing drainage area and that the remaining portions of the pond are previously approved without a forebay I hope this makes sense Please let me know if you have anymore questions Christine Christine (Nelson) 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 chnstine hallOncdenr oov Cardinal Drive ECERVE m Wilmington, NC 28405 05 JAN 9 9 2016 fp,I p �Nothmg Compares. _ 8Y Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties From- Richard (Rick) A Moore [mailto RAMoore@mckimcreed coml Sent. Wednesday, December 30, 2015 8 50 AM To Hall, Christine <Chnstme Hall@ncdenr gov> Subject FW request for additional info - IKA, SW8 880910 Chnstine- I hope you had a nice Christmas and are ready for a Happy New Year One quick question on your comment letter - first, 1 did have to make some revisions to our permanent pool/temporary pool volumes After I did that, my forebay size came down to 17 6% Before I submit with 17 6% and say that this is "approximately 20%" as required in the BMP manual, I wanted to get your opinion I know the supplement says 18%- 22%, trying to determine whether 17 6% is close enough since it would roundup However the cell in the supplement 1! protected and rounds to the tenths and therefore reports insufficient volume Last on your forebay comment -you mentioned sizing multiple forebays We only have a single forebay -however there is existing drainage area on the old IKA site that bypasses the forebay (previously permitted as such) - are you indicating you want me to size the forebay taking this existing area that bypasses the forebay out of those talcs? I will have the revised information to you before noon tomorrow - maybe even today depending on the answers to the above Thanks for your continued assistance Rick From Hall, Christine [mailto Christine Hall(alncdenr govl Sent: Friday, December 18, 2015 12 59 PM To: Richard (Rick) A Moore, Richard Christensen Cc: refika bdgic(@ika net, Weaver, Cameron Subject request for additional info - IKA, SW8 880910 All, The request for additional information on the modification to the Stormwater permit for IKA, SW8 880910, is attached If you have any questions, I'll be around today until 3 pm Otherwise, I'll be back in the office on the 28`h I hope everyone has a wonderful holidays Christine Christine (Nelson) 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 chnstine hallna ncdenr gov 127 Cardinal Drive Ext Wilmington, NC 28405 -:5"Nothmg Compares, I C& Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed If you have received this e-mail in error please notify the system manager Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the company Finally, the recipient should check this e-mail and any attachments for the presence of viruses The company accepts no liability for any damage caused by any virus transmitted by this e-mail This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed If you have received tlus e-mail in error please notify the system manager Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the company Finally, the recipient should check this e-mail and any attachments for the presence of viruses The company accepts no liability for any damage caused by any virus transmitted by this e-mail EGEIVE JAN 1 1 28% BY 9 Hall, Christine From Hall, Christine Sent Thursday, January 07, 2016 9 45 AM To 'Richard (Rick) A Moore' Cc Weaver, Cameron Subject RE request for additional info - IKA, SW8 880910 Rick, I wish I had time to review projects multiple times, but we are being challenged to be as efficient as possible In order to be efficient, we cannot provide additional extensive reviews However, at a quick glance through your response below and at the calculations, you look to be on the right track I you have specific questions or concerns, I'll be happy to go over those with you Thanks, Christine Christine (Nelson) 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 chnstine hall@ncdenr gov 127 Cardinal Drive Ext Wilmington, NC 28405 �Nothmg 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 Richard (Rick) A Moore [mailto RAMoore@mckimcreed com] Sent Wednesday, January 06, 2016 3 54 PM To Hall, Christine <Chnstme Hall@ncdenr gov> Cc Weaver, Cameron <cameron weaver@ncdenr gov> Subject RE request for additional info - IKA, SW8 880910 Christine - Please see below and the attached for my responses to your questions I know it seems messy - if a phone call will help, please try my mobile at 386-6359 Also glad to come meet with you to discuss if necessary Changes on the attached plans CS-101 shows the revised parking layout - loss of 1 space - and slight change to permanent pool CG-101 shows the revised grading plan with lost parking space and slightly increased pond size CG-501 is the revised pond detail sheet (only the pond itself changed) v,MMIQM&CREED HAND DELIVER TO NCDENR Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 ATTENTION Christine Hall LETTER OF TRANSMITTAL DATE December 30, 2015 PROJECT NO 1683-0003 I ASK NO 10 RE IKA Works, Inc Western Expansion TRANSMITTAL NO PAGE 1 OF 1 WE ARE SENDING ® Originals ® Prints ❑ Shop Drawings ❑ Samples n Specifications M Calculations n Other — Quantity Drawing No Rev Description Status Issue Status Code A Preliminary B Fabricahon Only C For Information D Bid E Construction F For Review & Comments G For Approval H See Remarks Action Status Code 1 No Excephons Taken 2 Make Corrections Noted 3 Other 4 Amend & Resubmit 5 Rejected -See Remarks T2 I%4 A u uc 243 NORTH FRONT STREET WILMINGTON NC 2&101 (910) 31i-1048 FAX (910) 251A282 McKIM & CREED, Inc. .i y� Signed?:=c (3 F IVF D Richard A Moore, PE, LEED AP DEC d U Co15 Senior Project Manager 46 MCIQM&CREED 243 North Front Street Wilmington, NC 28401 910 343 1048 Fax 910 251 8282 w mckimcreed com December 30, 2015 ENGINEERS SURVEYORS P L ANNE R S M&C 1683-0001(10) Mrs Christine Hall ECE IVE NCDENR-DEMLR $ 127 Cardinal Drive 3 0 2015 ve 1 Wilmington, NC 28405 BY RE Request for Additional Information Response IKA Works North American Expansion and Renovation -SW8 880910 Dear Mrs Hall In response to your comment letter dated August 4, 2014 for the above referenced project we offer the following responses as shown in bold 1 15A NCAC 02H 1003(g)(7) Provide technical information showing final numbers, calculations, assumptions, drawings and procedures associated with the stormwater management measures including Please provide additional supporting documentation and calculations demonstrating the split in drainage area and built - upon area between the 1" design storm and the 1 5" design storm as well as how the required storage volumes for each design storm were determined For instance, based on the provided documentation, it appears that the following portions of the drainage areas and impervious areas are onsrte, offsne, subject to the 1" design storm, and subject to the 1 5" design storm [ rauiage Area _'. t Sub3e-6eto 1 ",� Sublect;foxl 5" =Total- Onsrte 197,327 169,717 367,044 Offsrte 252,034 99,906 351,940 Total 449,361 269,623 718,984 Impervlous'Area 'o- Onslte 99,207 116,644 215,851 Offsrte 78,945 49,953 128,898 1'oial 178,152 166,597 344,749 However, the minimum required storage volumes presented for the 1" storm and the 1 5 ' storm do not appear to be based on the numbers presented above Please keep in mind that per 15A NCAC 02H 1008(c)(1) the size of the system must take into S \1683\0003\10-Comm\2015 12-30 RESPONSL LETTER to C Hall NCDENR doc Ms Christine Nelson Aagt�sT7Yi0Y ia/Tv/#s Page 2 account the runoff at the ultimate build -out potential from all surfaces draining to the system, including any off -site drainage Response Please see the attached data table, presented as you have presented yours above It also include individual breakdowns of how the totals were derived The 1" and 15" storm data has been revised according to this data and the revised pond supplement and calculations are also attached Please re -consider how the impervious area is presented to avoid the negative numbers This is an uncommon way of presenting the information and adds confusion to a project that already has several different aspects If the goal is to present the amount of permitted impervious area that has been re -purposed from the originally issued permit that can be accomplished through the existing BUA row, with a discussion in the narrative, or with more detailed information presented in a separate table Response The negative numbers have been removed from the application The "existing BUA" data now includes the net BUA permitted and built in the 2012 modification as "existing" The 2012 permit data is broken down into I" and 15" areas in the supplemental area breakdown tables c Please provide additional documentation demonstrating how a permanent pool volume of 44,115 ft was determined The stage storage table presented in the calculations ap ears to indicate that the permanent pool volume will be 85,013 ft Response The permanent pool volume is revised to 62,439 CF This is the permanent pool volume (85,013 CF) mmus the sediment storage volume (22,574 CF) d Please provide calculations demonstrating that the forebay has been sized to handle the respective drainage area If necessary, Section 10 3 3 of the NC BMP manual provides additional details on sizing multiple forebays Response The forebay sizing calculations are Included in both the pond supplement and attached wet pond spreadsheet calculations The revised calculations for the single forebay are based upon the contributing drainage area to the forebay, not the entire drainage area going through the pond In EOEIVE DEC 3 0 2015 BY S\1683\0003\10 Comm\2015-12-30 RESPONSE LETTER to C Hal IN ANM�IQM&CREED Ms Chnstme Nelson � la/3%c Page 3 previously issued permits (and in accordance with the rules at the time), portions of the existing drainage area behind the existing IKA facility were allowed to flow into the pond without discharging through a forebay first The contributing drainage area flowing into the proposed forebay represents 91 8% of the entire drainage area 2 If the project is within 5 statute miles of a public airport, please note that the Division cannot require the use of a BMP with a permanent pool of water per Session Law 2012-200 Part VI Section 6 Response Noted 3 Due to the potentially minor nature of these comments, the express additional information review fee has been waived Response Thank you 4 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 Response The revisions per this letter have been made throughout the applicable documents If you have any questions, please do not hesitate to contact me at 910-343-1048 Sincerely, I C EED, INC Richard A Moore, PE, LEED AP Attachments Revised permit drawings Revised permit application forms, supplements and calculations Revised Engineering calculations cc File Bob Hardin, IKA Works, Inc ECEIVE DEC 3 0 2015 BY �— S \1683\0003\10 Comm\2015 12-30 RESPONSE LETTER to C Hall NANR doc MCIQM&CREED Hall, Christine From Richard (Rick) A Moore <RAMoore@mckimcreed com> Sent Wednesday, December 30, 2015 114 PM To Hall, Christine Subject RE request for additional info - IKA, SW8 880910 Thanks Christine - I have adjusted everything and am dropping it off this afternoon Let me know if you have any other comments when you review it and we will get them addressed ASAPI Happy New Year to you - Rick From: Hall, Christine [mailto Christine Hall@ncdenr gov] Sent Wednesday, December 30, 2015 11 08 AM To: Richard (Rick) A Moore Subject RE request for additional info - IKA, SW8 880910 Rick, As I was writing this e-mail, I thought 1 would call to discuss I am battling a cold so my head is a bit foggy and it seemed easier to talk through this than trying to write it down, but you were away from your desk and the system did not allow me to leave a voice mail message On that note, here it goes Is the 17 6% considering the entire pond DA orjust for the contributing DA? In my letter, I was trying to advise that the forebay only needs to be sized for the contributing drainage area If I remember correctly, there is a portion of drainage area that is previously permitted to directly discharge into the pond without a forebay That is why I referred you to that section of the BMP manual, to help design a forebay for just the contributing drainage area Depending on how the numbers work out, I would just write underneath the "error" a justification that the forebay is only sized for the new contributing drainage area and that the remaining portions of the pond are previously approved without a forebay I hope this makes sense Please let me know if you have anymore questions Christine Christine (Nelson) 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 pov 127 Cardinal Drive Ext Wilmington, NC 28405 1Nothmg 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 Richard (Rick) A Moore [madto RAMoore@mckimcreed com] Sent Wednesday, December 30, 2015 8 50 AM To Hall, Christine <Chnstme Hall@ncdenr aov> Subject FW request for additional info - IKA, SW8 880910 Chnstine- I hope you had a nice Christmas and are ready for a Happy New Year One quick question on your comment letter - first, I did have to make some revisions to our permanent pool/temporary pool volumes After I did that, my forebay size came down to 17 6% Before I submit with 17 6% and say that this is "approximately 20%" as required in the BMP manual, I wanted to get your opinion I know the supplement says 18%- 22%, trying to determine whether 17 6% is close enough since it would round up However the cell in the supplement is protected and rounds to the tenths and therefore reports insufficient volume Last on your forebay comment -you mentioned sizing multiple forebays We only have a single forebay- however there is existing drainage area on the old IKA site that bypasses the forebay (previously permitted as such) - are you indicating you want me to size the forebay taking this existing area that bypasses the forebay out of those calcs? I will have the revised information to you before noon tomorrow - maybe even today depending on the answers to the above Thanks for your continued assistance Rick From Hall, Christine [madto Christine Hall(cancdenr qov] Sent Friday, December 18, 2015 12 59 PM To: Richard (Rick) A Moore, Richard Christensen Cc refika bilgic@ika net, Weaver, Cameron Subject request for additional info - IKA, SW8 880910 All, The request for additional information on the modification to the Stormwater permit for IKA, SW8 880910, is attached If you have any questions, I'll be around today until 3 pm Otherwise, I'll be back in the office on the 28" 1 hope everyone has a wonderful holiday) Christine Christine (Nelson) 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 chnshne hall(a)ncdenr qov 127 Cardinal Drive Ext Wilmington, NC 28405 - �'Nothung Compares Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed if you have received this e-mail in error please notify the system manager Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the company Finally, the recipient should check this e-mail and any attachments for the presence of viruses The company accepts no liability for any damage caused by any virus transmitted by this e-mail This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed If you have received this e-mail in error please notify the system manager Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the company Finally, the recipient should check this e-mail and any attachments for the presence of viruses The company accepts no liability for any damage caused by any virus transmitted by this e-mail 3 PAT MCCRORY ("mm" DONALD R VAN DER VAART Energy, Mineral and Land Resources ENVIRONMENTAL QUALITY December 18, 2015 Rene Stiegelmann, President k\� IKA Works, Inc (� 2635 Northchase Parkway, SE C 2 4� Wilmington, NC 28405 Subject: Request for Additional Information Stormwater Project No. SW8 880910 IKA Works North American Expansion and Renovation New Hanvoer County Dear Mr Stlegelmann ti�rmtnry TRACY DAVIS DI2Uor The Wilmington Regional Office received and accepted a modified Express State Stormwater Management Permit Application for IKA Works North American Expansion and Renovation on December 15, 2015 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 I 15A NCAC 02H 1003(g)(7) Provide technical information showing final numbers, calculations, assumptions, drawings and procedures associated with the stormwater management measures including ti a Please provide additional supporting documentation and calculations demonstrating the split in drainage area and built -upon area between the 1" design storm and the 1 5" design storm as well as how the required storage volumes for each design storm were ✓b determined For instance, based on the provided documentation, it appears that the following portions of the drainage areas and impervious areas are onsde, offsite, subject to the 1" design storm, and subject to the 1 5" design storm Drainage Area Subject to V Subject to 1 So Total Onsite 197,327 169,717 367,044 Offsite 252,034 (?) 99,906 351,940 Total 449,361 269,623 718,984 impervious Area Onsite 99,207 116,644 215,851 Offsite 78,945 49,953 128,898 Total 178,152 166,597 344,749 However, the minimum required storage volumes presented for the 1" storm and the 1 5" storm do not appear to be based on the numbers presented above Please keep in mind that per 15A NCAC 02H 1008(c)(1), the size of the system must take into account the runoff at the ultimate build -out potential from all surfaces draining to the system, including any off -site drainage Please re -consider how the impervious area is presented to avoid the negative numbers This is an uncommon way of presenting the information and adds confusion to a project that already has several different aspects If the goal is to present the amount of permitted impervious area that has been re -purposed from the originally issued permit that can be accomplished through the existing BUA row, with a discussion in the narrative, or with more detailed information presented in a separate table Suite o(Nonh Carolina I Environmental Quality 1 Energy Mineral and Land Resources 127 Cardinal Dnve Extension I Wilmington NC 28405 910 796 7215 T 1 910 350 2004 F I hum Uoonalmcdenr mg/web/1 State Stormwater Permit No SW8 880910 Page 2 of 2 c Please provide additional documentation demonstrating how a permanent pool volume of 44,115 ft' was determined The stage storage table presented in the calculations appears to indicate that the permanent pool volume will be 85,013 ft3 Dk d Please provide calculations demonstrating that the forebay has been sized to handle the respective drainage area If necessary, Section 10 3 3 of the NC BMP manual provides additional details on sizing multiple forebays 2 If the project is within 5 statute miles of a public airport, please note that the Division cannot require the use of a BMP with a permanent pool of water per Session Law 2012-200 Part VI Section 6 3 Due to the potentially minor nature of these comments, the express additional information review fee has been waived 4 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 December 31, 2015, or the application will be returned as incomplete The return of a project will necessitate resubmission of all required items, 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 address and fax number at the bottom of this letter The request must indicate the date by which you expect to submit the required information, 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 ofNCGS 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 chnstme hall@ncdenr gov Sincerely, in� �.-Ylu V1 Christine Hall Environmental Engineer GDS/canh \\\Stormwater\Permits & Projects\1988\880910 HD\2015 12 addlnfo 880910 cc Rick Moore, McKim & Creed Wilmington Regional Office Stormwater File State of North Carolina I Environmental Quality I Energy Mineral and Land Resources 127 Cardinal Drive Extension I Wilmington NC 28405 910 796 7215 T 1910 350 2004 F I htm //portal ncdenr oriJweb/lr/ Hall, Christine From Hall, Christine Sent Friday, December 18, 2015 12 59 PM To Moore, Rick A, Richard Christensen Cc 'refika bdgic@ika net', Weaver, Cameron Subject request for additional info - IKA, SW8 880910 Attachments 2015 12 addinfo 880910 pdf All, The request for additional information on the modification to the Stormwater permit for IKA, SW8 880910, is attached If you have any questions, I'll be around today until 3 pm Otherwise, I'll be back in the office on the 281h I hope everyone has a wonderful holiday) Christine Christine (Nelson) 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 chnstine 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 v,McIQM&CREED HAND DELIVER TO NCDENR Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 ATTENTION Christine Hall WE ARE SENDING ® Originals ® Prints n Snecifications 171 Calculations LETTER OF TRANSMITTAL DATE December 16, 2015 PROJECT NO, 1683-0003 TASK NO 10 RE IKA Works, Inc Western Expansion TRANSMITTAL NO PAGE 1 OF 1 ❑ Shop Drawings ❑ Samples n Other — Quantity Drawing No Rev I Description Status 2 Revised Data Sheets (revised offslte and total DA numbers) 2 Revised Pond Detail Sheet with Littoral Shelf Detail 1 Permit Rescission Request Letter from IKA Works, Inc SJ' Issue Status Code A Preliminary B Fabrication Only C For Information D Bid E Construction F For Review & Comments G For Approval H See Remarks Action Status Code 1 No Exceptions Taken 2 Make Corrections Noted 3 Other 4 Amend & Resubmit 5 Rejected -See Remarks REMARKS RBY ECEIVE DEC 16 2015 _ 243 NORTH FRONT STREET WILMINGTON NC 29401 (910) 343-1048 FAX (910) 251 8282 McKIM & CREED, Inc. Signed O6W Richard A Moore, PE, LEED AP Senior Project Manager v,WKIM&CREED HAND DELIVER TO, NCDENR Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 ATTENTION Christme Hall WE ARE SENDING ® Originals ® Prints n Soecifications 71 Calculations LETTER OF TRANSMITTAL DATE December 15, 2015 PROJECTNO, 1683-0003 TASK NO 10 RE IKA Works, Inc Western Expansion TRANSMITTAL NO PAGE 1 OF 1 ❑ Shop Drawings ❑ Samples n Other — Quantity Drawing No Rev Description Status 1+1 Original and Copy of SWU-101 F 2 Wet Pond Supplement F 1+1 Operation and Maintenance Agreement F 2 Project Narrative and Supporting Documents F 2 Project Permit Drawings F 1 ECS Geotechnical Investigation F 1 Permit Processing Fee $4000 Issue Status Code A Preliminary B Fabrication Only C For Information D Bid E Construction F For Review & Comments G For Approval H See Remarks Action Status Code 1 No Exceptions Taken 2 Make Corrections Noted 3 Other 4 Amend & Resubmit 5 Rejected -See Remarks REMARKS a McKIM & CREED, Inc. Signed tchard A Moore, PE, LEED AP Senior Project Manager IKA WESTERN EXPANSION NEW HANOVER COUNTY, NC NCDENR-DWQ-STATE STORMWATER DESIGN NARRATIVE Prepared for IKA WORKS, INC. 2635 Northchase Parkway SE Wilmington, NC 28405 Prepared by ENGINEERSclQM&CREED 243 North Front Street Wilmington, NC 28401 (910)343-1048 Project #1683-0003 (40) DECEMBER 2015 ECEIVE DEC 15 2015 BY „A,R,% i SEAL 0255031 D IKA WESTERN EXPANSION Project #1683-0003 (40) NEW HANOVER COUNTY, NC DESIGN NARRATIVE EXISTING CONDITIONS The existing IKA site is located on a 4 53 acre site with a wet pond treating the built upon area The original site was permitted on September 26, 1988 with a major expansion permitted on January 25, 2012 The 2012 permit modification resulted in a hybrid stormwater permit with portions of the project area being treated to 1988 standards and remaining portions being treated to current standards at the time of permitting PROPOSED PROTECT IKA Works, Inc's North American Headquarters located in the North Chase Industrial Park in New Hanover County is proposing to expand their existing facility to the west A 36,000 square foot building addition will be constructed on the western side of the existing building For connection of the 2 buildings, the existing wet detention pond needs to be modified In addition to the building expansion, the existing asphalt employee parking lot in front of the existing building will be modified/expanded, a truck turn -around, loading dock and additional parking will be constructed on the west side, a loop driveway connecting the expansion on the western side with the existing facility will be installed, and concrete sidewalks will be installed in various places around the site for pedestrian access Part of this project is also a recombination plat which will join 3 parcels of land into a single parcel with revised drainage easements The project will be contained within the recombined parcel of land having an area of 8 45 acres PROPOSED IMPROVEMENTS This project proposes to fill in a portion of the existing wet pond that currently bisects the lots proposed for recombination and install a larger pond behind the proposed facility to treat the runoff from the proposed onsite improvements, the existing onsite built upon area (BUA) as well as offsite drainage areas and their BUA Hydrologically and hydraulically the pond is designed to treat the first 1 5" of rainfall from the BUA installed during the 2012 IKA expansion, the BUA proposed in this expansion and potential future BUA on 2 parcels located within the drainage area (portions of SW8 000720 and SW8 101018) It is also designed to treat the first I" of runoff from the BUA permitted for the original IKA site as well as the existing offsite BUA (the offsite BUA was constructed prior to the rules revisions requiring treatment of the first 15") The proposed pond expansion geometry is designed in accordance with current rules including the provision of a forebay (sized for the entire drainage area), littoral shelf and 3 1 side slopes The existing riser will require minor modifications to maintain a 2-5 day drawdown time for the increased runoff resulting from the offsite drainage area and proposed BUA The pond bottom elevation and permanent pool elevation are proposed to stay as designed and permitted in 1988 and modified in 2012 resulting in a 3' depth For further clarification of the offsite drainage areas, BUA, rainfall treatment depths, etc please see the Offsite Drainage Area and BUA figure herein and Plan Sheet 13, DA-101 SUPPORTING DOCUMENTS • Offsite Drainage Areas and BUA • USGS Quad Map • USDA NRCS Sods Map • Wet Pond Spreadsheet Calculations • Secretary of State Information • Property Deeds • Drainage Area and Impervious Coverage Map (see plans, DA-101, Sheet 13) (ROCKYPOINO MLtop 93+' 19'SR Od"N (CASTLE HAYNE) On'Ra+; N UT"5:1' (WILMINGTON) Produced by MyTopo Tenam Navigator Tar.,Qrephy based on US3C' 1 2,1 OIXI ma . NodhAmenaW n 1982 DOm LAD93) P01Ycnne Pheeapn to place on the predicted Nodl'i rinrereat 142'! move the projection lines 19M N and 27M G ✓ * SCALE 1 24000 � o + MILE D 1W0 YARDS 0 1 KILOMETER GN 1.61" W CONTOUR INTERVAL 5 FEET MN 9.05" W MEAN SEA LEVEL S(C011 S 11I1L(NCI01 ADRANGI.I NOR I 1 i CA ROI.I NA T(11'(16RAPHR SI-RIGS (TOPSAIL) ...... ..'oaerw (HAMPSTEAD) on, 11 0a n. ry 096"Yo (Unavailable) SCOT'TS HILL (NC). NC 1970 ,,: 1= u a Soil Map —New Hanover County. North Carolina gKA Works Inc) 235 235380 235a20 2351 235500 2315 2355 2356 0 235Wl 235700 3 } MaV`-�: 1: 1.800 ffiu68e0 or,A`05c� (ll"x6.4")shceL N 0 25 � I(A) --� 150 A 0 e x W Map p )edrron: Web Menator Cwner rm,,ox me WC,-&1 IF,* tom: U(M Zone i6N VJCW L5U1 Natural Resources Web Soil Survey 10/12/2015 Conservation Service National Cooperative Soil Survey Page 1 of 3 Soil Map —New Hanover County, North Carolina (IKA Works Inc) MAP LEGEND MAP INFORMATION Area of Interest (A0f _. Spoil Area The soil surveys that comprise your AC I were mapped at 1:15,800. Area of Interest fA0h Stony Spot l Warning: Sod Map may not 6e valid at this scale.. Soils Soil Map un t Polygons Very Stony Spot Enlargement of maps beyond the scale of mapping can cause Wet Spot misunderstanding of the detail of mapping and accuracy of soil line — Soil Map Uoi Lines placement. The maps do not show the small areas of contrasting Q Soil Map Unit Points .. other soils that could have been shown at a more detailed scale. + Special Line Features Special Point Feat— Please rely on the bar scale on each map sheet for map e i Biowouf Water Features measurements. Borrow Pit Streams and Canals Source of Map: Natural Resources Conservation Service transportation Web Soil Survey URL, http:Uwebsoilsurvey.mics.usda.gov ?i Ctay Spot — Rats Coordinate System Web Mercator (EPSG3857) Closed Depression — Interstate Highways Maps from the Web Soil Survey are based on the Web Mercator Gravel Pit projection, which preserves direction and shape but distorts US Romes distance and area. A projection that preserves area. such as the .. Gravelly Spot Major Roads Albers equal-area conic projection, should be used if more accurate iD Landfill Local Roads calculations of distance or area are required Lava Flow This product is generated from the USDA-NRCS certified data as of Background groan the version date(s) listed below. March or swamp Aerial Photography Survey Area New Hanover County, North Carolina Mine or Cranny Survey Area Data: Version 15. Sep 12, 2014 Survey fj� Miscellaneous Water Soil map units are labeled (as space allows) for map scales 1,50,000 Poronnial Water or larger. ,F Rock Outcrop Date(s) aerial images were photographed: Data not available. + Saline Spot The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background Sandy Spot imagery displayed on these maps. As a result, some minor shifling Ya Severely Eroded Spot of map unit boundaries may be evident. Sinkhole Side ar Slip Sodic Spot u," Natural Resources Web Soil Survey 10112/2015 -90 Conservation Service National Cooperative Soil Survey Page 2 of 3 Soil Map —New Hanover County North Carolina Map Unit Legend IKA Works Inc New Hanover County, North Carolina (NC129) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI Le Leon sand 5 3 I 62 8 Mu Murville fine sand I 31 I 37 2% Totals for Area of Interest 841 100 0% USDA Natural Resources Web Soil Survey 1011212015 Conservation Service National Cooperative Soil Survey Page 3 of 3 IKA Works, Inc NCDENR Wet Pond Spreadsheet Calculations Detention Pond Site Data On Site Drainage Area 8 38 ACRE Value Irom CAD Off -Site Drainage Area 771 ACRE Value from CAD Total Drainage Area 1609 ACRE Drainage Area Subject to 1 Rainfall Treatment 422,048 SF Dnanage Area Subject to 1 5' Rainfall Treatment 278 511 SF Existing BUA 110 320 SF Value from CAD Proposed BUA 105 323 SF Value from CAD OHsde BUA 128 898 SF Total Net BUA 344,541 SF Existing BUA - Demo BUA +Proposed BUA Permitted BUA-Treated to 1" Rainfall Depth 178152 SF Proposed/Offsile BUA -Treated to 1 5' Rainfall Depth 166 389 SF Composite Impervious Cover 49 18% Impervious Cover -(Total Net BUA)/(Total Drainage Area) 1' Rainfall Impervious Cover 42 21% 1 5' Rainfall Impervious Cover 59 74% Treatment Volume 1" Runoff Coefficient Rv (Net Increase BUA) 0 430 INIIN Rv=O 05+0 009'(% Impervious for Composite Impervious Cover) 1 5" Runoff Coefficient Rv (Net Increase BUA) 0 58B INIIN Rv=O 05+0 009'(°h Impervious for Composite Impervious Cover) Required l 5' Runoff Volume 20459 CF 3630"Rd'Rv"DA(scm) Required 1 0' Runoff Volume 15 120 CF 3630 Rd' Rv DA(acro) Total Required Runoff Volume 35 579 CF 1 5'Volume + I' Volume Provided Treatment Volume 35 637 CF Volume between permanent pool B next -highest onfice Stormwater Pond Bottom of Pond Elevation 270 FT Value selected by designer Sediment Storage Elevation 270 FT Value selected by designer Sediment Storage Volume 0 CF Pond volume below sediment storage elev Permanent Pool Elevation 3000 FT Value selected by designer Temporary Pool Elevation 3080 FT Elevation of the next -highest onfice Average Depth (PREVIOUS PERMIT) 300 FT Value from PERMIT SW8 880910 Required SAIDA Ratio for 90% TSS Removal 5 51 % % Value them 90% TSS removal chart based on Composite % Imp Required Permanent Pool Surface Area 38619 SF (Req d SAIDA Ratio) "(iota/Drainage Area) Provided Permanent Pool Surface Area v 40 637 NSF Value Imm stage -storage calculations Forebay r'" _ m Total pond volume between permanent pool elevation 8 Permanent Pool Volume 86,863 CF sediment storage elevation Required Forebay Volume 17 373 CF 20%of Permanent Pod Volume ' Provided volume between permanent pool elev B sediment Provided Volume - Forebay . 17,252 CF ,4 s: c storage elevation Total Forebay % of Permanent Pool 19 8fi % Total between 18 - 22%- OK Drawdown Diameter of Low -flow Orifice 300 IN Value selected by designer Invert of a PVC (2 50" Low -Flow Orifice) 3000 FT Invert elevation of drowdown onfice Invert of 24" RCP weir box (Outlet Pipe) 3080 FT Elevabon of the next highest onfice Total Elevation Head Above Orifice 068 FT Total elevation head above center of onfice Average Elevation Head Above Weir Invert 023 FT 113 of total elevation head Cd Coefficient of Discharge 060 Value selected by designer O Flowrate Through Low -flow Onfice Oil CFS O=Cd'(Pi)'((Drenwterof Onfice)'(1102m))A214'j2"322'(Averge Head))M2 Drawdown Time 368 DAYS I I -,— °w"""" "' —,,, -1, p� drowdownbetween 2- tla ngrU CAY"1, O SEAL -,� = 0255031 gV McKim Creed Inc C'NEE� 243 N Front St .� , rr.Q Wilmington NC 29409 A M` ��..` 1 of 2 IKA Works, Inc Stage Storage Calculations for Wet Detention Pond Stage/Storage Above Permanent Pool Cumulative Contour Incremental Volume S Contour Area (SF) Volume (CF) (CF) 3000 40537 0 0 •Permanent Pool 3050 45 946 21 621 21 621 • Top of Shelf 3075 47 239 11,64B 33 269 3080 47 498 2 368 35 637 Temporary Pool 3100 48,534 9 603 45 241 3200 53 691 51 112 96 353 3300 59 021 56,356 152 709 3400 64 408 61,714 214 423 3500 69 852 67,130 281 553 3600 75 354 72 603 354 157 -Top of Pond StagelStorage Below Permanent Pod Main Bay Cumulative Contour Incremental Volume S Contour Area (SF) Volume (CF) (CF) 2700 16 036 0 0 fond Bottom 2800 20 600 18 318 18 318 2900 25 220 22 910 41 228 2950 27 552 13 193 54 421 -Bottom of Shelf 3000 33209 15190 69611 -Permanent Pool Forebay Cumulative Contour Incremental Volume S Contour Area (SF) Volume (CF) (CF) 27 00 4 444 0 0 forebay Bottom 2800 5 272 4 858 4 858 2900 6 156 5 714 10 571 2950 6 619 3 194 13 765 -Top of Forebay 3000 7 328 3 467 17 262 Permanent Pool Stage/Storage Below Permanent Pool Total (main ear• Fa q) Cumulative Contour Incremental Volume S Contour Area (SF) Volume (CF) (CF) 2700 20 479 0 0 -Pond Bottom 2800 25 871 23 175 23 175 2900 31 376 28 624 51 799 2950 34 171 16 387 68 186 -Bottom of Shelf 3000 40 537 18 677 86 863 -permanent Pool BAN 1 12016 BY McKim Creed, Inc 243 N Front St Wilmington NC 28409 2 of 2 r''•} �i^'� �." 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Marshall DEPARTMENT of THE Secretary SECRETARY OF STATE PO Box 28622 RsieVi, NC 2/626-0622 (919)8074WO Account Login Register View Document Filings File an Annual Report Print a Pre -Populated Annual Report form Amend a Previous Annual Report Corporate Names Legal IKA-WORKS, INC Business Corporation Information Sosld 0356253 Status Current -Active Annual Report Status Current Citizenship Foreign Date Formed 11/18/1994 Fiscal Month December State of Incorporation DE Registered Agent Bilgic, Refika Corporate Addresses Reg Office 2635 North Chase Pkwy Se Wilmington, NC 28405-7419 Reg Mailing 2635 North Chase Pkwy Se Wilmington, NC 28405-7419 Mailing 2635 Northchase Pkwy SE Wilmington NC 28405-7419 Principal Office 2635 Northchase Pkwy Se Wilmington NC 28405-7419 Officers Secretary Refka Bilgic 2635 Northchase Pkwy SE Wilmington NC 28405-7419 Treasurer Thomas Eberle Jankle & Kunkle Sir 10 Staufen XX 79219 NC President Rene Sliegelmann 2635 Northchase Pkwy SE Wilmington NC 28405-7419 Stock http Hvv% r secretary state nc us/Search/profcorp/4990007 10/8/2015 Basic Map 31JN3o06--�o250Fi2. 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City Limits i r �T 1 Schools 0 005 01 Parcels d Landmarks 10 Parks WwH�vwCOMY NC rg Cemeteries 013 ml -T-i 02 km cis So�'� New Hanover County Page 1 of 1 PARID R02620-003.015-000 IKA WORKS INC 2717 NORTHCHASE PKY SE Parcel Alt ID 323016 93 8081 WO Address 2717 SE NORTHCHASE PKY Urn City WLMINGTON Zip Code Ne,heomood CGCC1 Class IND-Industrial Lard Use Code 958-Unused Land Lmng Units Acres 221 Zoning PO PLANNED DEVELOPMENT Legal Legal Desrnpbon TR D-2R SEC 3 NORTHCHASE PARK OF COMMERCE Tax Oland FO Owners Owner IKA WORKS INC City WILMINGTON Slate NC Country LIP 28405 THE DATA IS FROM 2015 Sales Sale Data Sale Pnoe Grantee Grantor Bank Page Sale Key 22-0CT 12 SEW 000 IKA PARKS INC 5C INVESTMENTS LLC 5652 0141 A78261 09JAN-07 5C INVESTMENTS LLC GILBERT THOMAS M MONIQUE R M 6127 1010 A14WI 30 NOV 95 $165 C00 GILBERT THOMAS M MONIQUE R M AMMONS NORTHCHASE CORP 1958 (NIN 18686 01AUGA $0 AMMONS NORTHCHASE CORP AMMONS NORTHCHASE CORP 1425 1516 18595 Sale Details 1 of 4 Sale Date =CT 12 Sale Key 478261 Sale Pnce $550 000 OD Grantee IKA NARKS INC Grantor 5C INVESTMENTS LLC Sale Source Book 5682 Page 0141 Sale Type IMPROVED Sale Validity Sale Flag STEB Instrument N Instrument Type Waaenty Deed Aft Reason Adt Pnce Aft Amount Link Click Here In rew, the deed for this parcel Values Year 2015 Total Land $115 500 Total Buildings s0 Appraised Total $115 500 MARKET VALUE SHOWN EXEMPTIONS TO BE REFLECTED IN AUG BILLS THE DATA IS FROM 2015 http //etax nhegov com/Datalets/PnntDatalet aspx9pin=R02620-003-015-000&gsp=PROFI 10/8/2015 New Hanover County Page 1 of 1 PARID R02620-003.009 000 IKA WORKS INC Parcel All ID 324013 03 0169 000 Address 2701 BE NORTHCHASE PKY Until City WLMINGTON Zip Code Neighloornom CGCC1 Class IND mustnal Lam Use Cade 956 Unused Land Living Units Acres 1 W81 Zoning PD PLANNED DEVELOPMENT Legal 2701 NORTHCHASE PRY SE Legal Desorption TR C NORTHCHASE PARK OF COMMERCE SECTION 3 Tm District FD Owners Owner IKA WORKS INC City WILMINGTON State NO Country Zip 28405 THE DATA IS FROM M15 Sales Sale Dale Sale Price Grantee Grantor Book Page Sale Key 22-OCT 12 $550000 IKA WORKS INC 5 C INVESTMENTS LLC 5662 0141 478260 2&MAR 96 $124 000 &C INVESTMENTS LLC AMMONS NORTHCHASE CORP 2332 0115 18677 01 AUG4 $100 AMMONS NORTHCHASE CORP AMMONS NORTHCHASE CORP 1426 1516 18676 Sale Details 1 or 3 Sale Dale 22-OCT 12 Sale Key 4712 0 Sale P. $550 o00 00 Grantee IKA WORKS INC Grantor 5-C INVESTMENTS LLC Sale Source Book 5682 Page 0141 Sale Type IMPROVED Sale Validity Sale Flag STEB Insaurrent Il Insitument Type Warranty Deed Act Reason Act Pnce Adl Artnunt Link Click Here to Hew line all for this parcel Values Year 2015 Tell Lam IN 200 Total Buildings $0 Appraised Total SBB 200 MARKET VALUE SHOWN EXEMPTIONS TO BE REFLECTED IN AUG BILLS THE DATA IS FROM 2015 hup //etax nhcgov com/Datalets/PrmtDatalet aspx?pm=R02620-003-009-000&gsp=PROPI 10/8/2015 New Hanover County Page I of 2 PARIO R02620-003-002.000 IKA WORKS INC Parcel Alt ID 324013 03 n71 000 Address 2635 BE NORTHCHASE PKY Un4 City VALMINGTON Lp Code Neighborhood CGCC1 Class COM-Commerual Lane Use Cade 73 13usmess Living Uluts Arles 4 6309 Zoning PD PLANNED DEVELOPMENT Legal 2635 NORTHCHASE PKV SE Legal Desorption (4 53 ACRES) TR A NORTHCHASE PK COMMERC Tax District FD Owners Owner IKA WORKS INC City W LMINGTON State NC Country Lp 28405 THE DATA IS FROM 2015 Sales Sale Date Sale Price Grantee Grantor Book Page Sale Key 13-APR-06 51 825000 IKA WORKS INC SOUTHSIDE HOLDINGS LLC 5006 1223 402778 29-OCT-0 s0 FORREST ROBERT J FORREST PLAZA ASSOCIATES LLC 4074 0249 181 29-0CT-03 $1 600000 SOIIFHSIDE HOLDINGS LLC FORREST ROBERT J 4074 0253 18649 05 OCT43 50 FORREST ROBERT J ETAL FORREST PLAZA ASSOCIATES LLC 4043 0005 18647 12 APR 95 SO FORREST PLAZA ASSOCIATES LLC FORREST PLAZA ASSOCIATES 1871 1016 18646 01-0CT-88 $0 FORREST PLAZA ASSOCIATES FORREST PLAZA ASSOCIATION 1434 1411 18645 Ot JUL 88 $91 ODD FORREST PLAZA ASSOCIATION AMMONS NORTHCHASE CORP 1424 0309 18644 01 MAR-87 EO AMMONS NORTHCHASE CORP NOT IN SYSTEM 1367 0108 18643 Sale Details idly Sale Date 13 APR416 Sale Key 402778 Sale once s1 825 MID 00 Grantee IKA WORKS INC Grantor SOUTHSIDE HOLDINGS LLC Sale Source S Signed Verification Letter Book 5006 Page 1223 Sale Type IMPROVED Sale Validity V Vie fed for Use Sale Flag STEB Instrument# Instrument Type Warranty Used Adt Reason Adt Price Act Amount Link Click Here to vim the dead for this parcel Commercial Card 1 Building Number 1 Structure COW/Desorption OFW-0FW Imprevment Name IKA WORKS Units Year Built 1989 Effective Year Built 2012 Grade B Class C COM Other improvements Other Imp Value http //etax nhcgov com/Datalets/PrmtDatalet aspx?pm=R02620-003-002-000&gsp=PROFI 10/8/2015 New Hanover County Page 2 of 2 Total Under Roof 49650 Building Factor 1 Percent Complete % Percent Good 97% Noles Other Feature Details 1 of4 Card InOExl Line 1 Area Measurement 1 1 Measurement 2 3264 Identical Unts 1 Summary of interlorlExterior Data Card Line Numoer Sedion From Floor To Floor Area 1 1 1 01 01 32 940 1 2 1 1 1 6 562 1 3 1 2 2 10148 Interior/Exterior Details 1 of Cara 1 Line Numoer 1 Section 1 From Fluor 01 To Floor 01 Area 32 940 Use Group OF Class Physical Condition G Construction 4-0 Mil Height 20 Interior Wall 22 Art 1 1 Plumung 0-0 UMs Functional Dew Emromic Depr Summary of All Other Features Cara InVEN Line Area 1 1 1 1 0 1 1 THE DATA 15 FROM 2015 Misc Improvements Cold Desc Year Built Grade Width Length Area 1 UB-UB M14 D 24 W 1 "0 1 PA PA 1969 C 120 300 W 000 1 YL YL 1969 C 6 1 1 THE DATA IS FROM 2015 Values Year 2015 Total Lana $2W 800 Total Buildings $4 416 500 Appraised Total $4 653 300 MARKET VALUE SHOM EXEMPTIONS TO BE REFLECTED IN AUG BILLS THE DATA IS FROM 2015 http //etax nhcgov com/Datalets/PrmtDatalet aspx?pm=R02620-003-002-000&gsp=PROF] 10/8/2015 2012036567 0120316567 d11 INJl U91 2812036567 �aa RE RATIO PER � t rear Ores, �lv2012 OCT 22 R4 8K 5682 PS 141-143 FEE $25 op hC REV STPfp v iW OB ISTW J 2D1�zp Erase To $ { 100 �/ Return after rewrdmg10 The Law Off.ce of .'aso- r (� -Va�gh ;, PLLC Tax Map IDi Repared by 5552 B Caro_ no Beach Road R2620-0 Ill _, hC 28412 ParchIDi Il 0 RC2620-003--000 ja5an a.c`n BRIEF DESCRIPTION FOR INDEX -) TR C AN' TR D-2 \ORTdC-1ASE PARK OF CO VERCE SECTION 3 STATE OF NORTH CAROLINA DATE WARRANTY DEED COUNTYOF New Haro�er 16/1612012 5-C Investments, _LC 4917 Castle .akes Road Castle Hayre, NC 26429 "GT,"te ItA-4ror es, Inc 2635 Norirchase Parkway SE ,4_ vircto-, NC 28405-74.9 "Grantee" emm, fog carporatan parmersmp mat unmcarpsrareo asscuatan erc/ NOTE When nlference hereat a made to the GRAATOR and/orfhe GRANTEE the smgNarshaR vapxle Mre plural, the neuter shall ffwA a the masculine as wart as the femme WITNESSETH FOR VALUABLE CONSIDERATION RECEIVED receipt of which is hereby acknowledged the GRANTOR hereby has bargained sold and conveyed in fee sumps unto the GRANTEE all NI certain at ct parcel of lead the Cm/ of_, _ Township of New Hanover County more pancoularly described as follows BEING all of eareel C Sections 3 of the 4ORT9C-ASE -ARK OF CO :PERCH, as the sane is shown an a map thereof recorced in Map Bocx 21 at page 293 of the dew banorer Co-nty Reg-Stry Tax parcel IDil B02620-003-009-000 9eing all of Revised Parcel D-2' as loans _n Vas Baox 49 at Page 53 of tqe New lanover County Registry, reference to which hereby rcce fcr a ^,ore particular descripticr Together with and sab;ect to that cer_a_n ➢eclaratron of Cc enants for tie Nort-iChase Park of Commerce recorded _n Boos 149" at Pace 2550, arc Grantor its successors and assigns hereby waive and release .Pro t,e Grantee, t­ieir -e_rs and assigns a --I r-ghts to buy back t"e real property descr_bee here-n, which rights were reserved oy Gra,tor, its successors ane assigns by Artic_e X31I of the said Declarat_on recorded _n Bootr 149_ at "age _558 of said Registry Subject to easements of record and as sioin on the abcoa-referenced recorded plat Tau parcel ID AR02620-003-015-000 Also knon as 2701 5 27=7 Nort:chase ear<weg, Nilw_ng=o^ Nortb Carc_ina knw,. kh .rm 1 TO HAVE AND TO HOLD this realty and all penal ges and appurlenances thereto belonging unto the GRANTEE its heirs successors and/or assigns in fee simple And the GRANTORoovenants with the GRANTEE Nat GRANTOR rs seized of the premises In fee sanpe has the right to covey the same In fee simple, that the We is marketable and free and clear of all encumbrances and that GRANTOR wit forever warrant and defend the We against the lawful claims of all persons whomsoever, other then the following exceptions 0 Point available tv Lawyer -Members of Mpt Wla t 5a, rt &ro Yp- "Alwal s the Point of BeV,Onag" 1-800-575-3066 0 CFI 1 FR'C `RFS1pFNC ET DISC LOSDRE cps If checked, m the propetV dwcnbed Herein includes the pnmary residence m V of at least one of the GranWO pursuant to N C Gen Stet 105.317 2 IN WETNESS WHEREOF, the Cran or Tits duly ex ted Me -pe9w,, 5-C Tnvea�ents, IJZ tENdf A's—) Sy Arthon T Dxnbresb A Ala --�lemter T4L y Ely -'CPtyf/.15SrpN V, F �OTgq w t"��81tG � eER 21 20 ,•C m Pnth-1, 1 GonbresY>, Jr Ha�acerlu�+�:.er 5 my H i {Sea11 �o STATE OF North Carol_na, New Hanover COUNTY 3 redly Nzt A,�fStr•�T4ot NnsY Sf , svagy ce ,e beVe z fhm day and ackwOedged Mat hz is 91e R9aager+h�^firer or GranmrSC nestzrs t <C a Ncnh Caroi.na hm1Ed I,abdCy ccmpsy and 01a1 ny auta ly d tr grten end as fheaUef S_C- en4'y he signed th fomg mg mshm�t -n (is ra?e en As oehall a5 t5 act aT1 deer Name ofNofary 8/3/)z Data 0 Potm m-Ad blew Law er-Niembers of MIIft 36la tta trt &r oap-"Always the Point of Begrastag" 1-600-575-1066 JENNIFER H MACNEISH REGISTER OF DEEDS, NEW HANOVER 216 NORTH SECOND STREET WILMINGTON, NC 28401 RR1Rn if RRRi1iRRRf ttf R!!f!lfflrlRlRRlffrtf\ifRRiRflii011MlRrtlrff.RiilRRRM1f..Rl.fnfRiRfitlR•I1R ... R1RRRROif ff liR f if ff V A. Filed For Registration, 10127J2012 04 16 05 PM Book. RE 5662 Page- 141.143 Dricument No 2012036567 3 PGS $26 00 NC REAL ESTATE EXCISE TAX $1,100.00 Recorder. JOHNSON, CAROLYN State of North Carolina, County of New Hanover PLEASE RETAIN YELLOW TRAILER PAGE WITH ORIGINAL DOCUMENT. *2012036567* 2012036567 ®0, o I litioli ill FOR REGISTRRT ION REGISTER OF DEEDS R NEW HRNOVVEERPCOUNTY, NC 2006 APR 13 09 35 25 AM BK 5006 PG 1223-1225 FEE.$17 00 NC REV STAMP $3,650 00 15MI12092H Prepared by and Return to Anthony A San'o SAI FO I AW FIRM, P 1508 Military Cutoff Road, Suite 203 TAX PARCFI, NO P02620-003-002-000 Wilmington. NC 2UO3 The attorney preparing this instrument has made no record search or title examination as to the property herein described unless the same is shown by his written signed opinion STATE OF NORTI f CAROLINA WARRANTY DEED COUNT Y OF NEW HANOVER STAMPS $3,650 00 18riefDeseriprion for Index. NORTHCHASE PARK Parcels A & B THIS DEED, made this JI:!I'day of April, 2006, by and between SOUTHSIDE HOLDINGS, LLC, GRANTOR and IKA Works, Inc., a North Carolina corporation, whose address is 91r7A kferlo CLictSr PhvU SE Wilhilkiafnvi . AIL 2P'i05_.GRANTEE, WITNESSETH: THAT the said GRANTOR, for and in consideration of the sum of TEN DOLLARS ($10 00) and other valuable considerations to it in hand paid by GRANTEE, the receipt of which is hereby acknowledged, has granted, bargained, sold, and conveyed, and by these presents does hereby grant, bargain, sell and convey unto the said GRANTEE, its successors and assigns, the property lying and being in the County of New Hanover, North Carolina, ("Subject Property") and more particularly described as follows A CERTAIN parcel of land lying and BEING in Cape Fear Township New Hanover County, North Carolina, containing 4.5345 acres, and BEING ALL of Parcel "A" 93 shown on a map entitled "Redivision of Parcel A and Parcel B - NORTHCHASE PARK OF COMMERCE SECTION I," said map being recorded in Map Book 28 at Page 183 of the New Hanover County Registry. Subject Property was acquired by SOUTHSIDE HOLDINGS, LLC by instrument recorded on the 291b day of October, 2003 in Book 4074 at Page 253 of the New Hanover County Registry Vw-T 61 TO HAVE AND TO HOLD the Subject Property and all privileges and appurtenances thereto belonging to the GRANTEE, in fee simple AND the said GRANTOR, for itself, its successors and assigns, does covenant to and with the said GRANTEE, its successors and assigns, that it is seized in fee of said premises and that it has good right to convey the same, that the title is marketable and free and clear from any and all encumbrances, except as set forth herein, and that it will, and its successors and assigns shall, WARRANT AND DEFEND the title to the same against the lawful claims and demands of any and all persons whomsoever Notwithstanding the foregoing, the warranties herein recited are subject to 2006 ad valorem taxes, all applicable zoning and land use ordinances, rules, regulations, laws and statutes, and all restrictive covenants, easements and rights -of -way of record iN TESTIMONY WHEREOF, the said GRANTOR has caused this Deed to be signed and sealed, all on the day and year first above written SOUTHSIDE HOLDINGS, LLC, a North Carolina limited liability company y. EAL) a h Manager STA rF, Of NORTH CAROLINA COUNTY OF NEW 14ANOVER 1, V 1 G 'T a Notary Public for said County and State, do hereby certify that R(3uty 11 e yk M personally appeared before me this day and acknowledged the due execution of the foregoing instrument in his/her capacity as Member/Manager of SOUTHSIDE HOLDINGS, LLC, a North Carolina limited liability company Witness my hand and official seal, this t kll"- day of F'cYJV 1 i 2006 My Commission Expires ' dg REBECCA P. SMITH REGISTER OF DEEDS, NEW HANOVER 216 NORTH SECOND STREET WILMINGTON, NC 28 401 Filed For Registration. 0411312006 09.35:25 AM Book: RE 5o06 Page: 1223.1225 Document No.. 20060205VO DEED 3 PGS $17.00 NC REAL ESTATE EXCISE TAX' $3,650 00 Recorder: STORER, MARVIS ANN State of North Carolina, County of New Hanover YELLOW PROBATE SHEET IS A VITAL PART OF YOUR RECORDED DOCUMENT. PLEASE RETAIN WITH ORIGINAL DOCUMENT AND SUBMIT FOR RE-RECORDING. *2006020590* 2006020590 Hall, Christine From Hall, Christine Sent Wednesday, October 14, 201S 3 41 PM To 'Richard (Rick) A Moore' Cc. Weaver, Cameron Subject RE IKA - existing pond revisions Rick, Thanks for the e-mail In regards to the SHWT, when there is an established pond or other drainage feature that is in the vicinity of the proposed BMP, then the argument / justification could be made that the SHWT soil indicators are of a relic elevation and that the pond or other drainage features have lowered the SHWT to a level at or below the existing outlet This is assuming that the pond does in fact stay at that elevation and there is no groundwater entering during times when the SHWT is in play (in other words, the pond doesn't discharge groundwater between rain events) On to how to design an expanded pond I have reviewed notes on past projects and hopefully have some better and clearer information for you If you have to increase the pond surface area to handle the additional drainage area and impervious area, then only the part of the pond that is being expanded needs to meet the current requirements (forebay, vegetated shelf, slopes, etc) The previously constructed slopes that are not being touched or expanded can remain as is Now which method of determining the depth of the pond will depend on if you are having to increase the depth If you are using the previously permitted depth, then you can continue to use the method previously approved However, if you are having to increase the depth, then the average depth must be used for the entire pond As for the adjacent permits, these are the ones I came up with Cape Fear Dialysis — SW8 101018 Cornerstone Baptist Church — SW8 000720 Dominion Park Section I — SW8 940714 I think that covers the properties you are concerned about In reading the follow up e-mail you just sent It probably would be wise to consider the density allowed per the permit for that residential development (likely 30%) I will get with Cameron to provide my next available date Christine Christine (Nelson) 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 chnstine 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 From Richard (Rick) A Moore [mailto RAMoore@mckimcreed com) Sent Tuesday, October 13, 2015 2 15 PM To Hall, Christine <Chrstine Hall@ncdenr gov> Subject IKA -existing pond revisions Since I know you are going to be discussing upgrades to our existing pond once we increase the BUA coming to it, I wanted to give you a little more info The existing pond is in a 60' drainage easement The existing top of bank is roughly 36 and the bottom of pond is 27 Therefore there is 9 vertical feet on each side At 3 1 side slopes, that leaves a 6' "base" in the center (see attached) If we try to get any more depth in this section it will essentially become a v-ditch with a bottom elevation of 26' One other thing we didn't discuss but I think needs to be brought up We were proposing to use the same permanent pool elevations as the existing pond - 30 69' However our SHWT determination showed SHWT to beat an approximate elevation of 34' Does this come into play at all with our required upgrades? Richard (Rick) A Moore, PE, LEED AP I Senior Project Manager Tel 910 343 1048 1 Cell 910 386 6359 243 North Front Street I Wilmington, NC 28401 RAMooreamckimcreed com 1 http 11www mckimcreed com `i! ENGINEERSq<B4&O�EDRS E RS Follow us on YouTube 1 twitter 1 facebook I Linkedin Visit our NEW website, www mckimcreed com To send me a file larger than 20MB or a zip Me please click here This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed If you have received this e-mail in error please notify the system manager Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the company Finally, the recipient should check this e-mail and any attachments for the presence of viruses The company accepts no liability for any damage caused by any virus transmitted by this e-mail N 'IVY (VACl Vc eA, 5N T 1*0 � G S -vim\ 1 �tCN (�Y\�i� i�..5�v� Or Hall, Christine From Richard (Rick) A Moore <RAMoore@mckimcreed com> Sent Wednesday, October 14, 2015 2 23 PM To Hall, Christine, Weaver, Cameron Cc: Richard Christensen Subject IKA Submittal date Christine and Cameron - We came back yesterday and looked at a couple options for dealing with the offsite drainage and meeting the requirements as discussed in our submittal meeting We found that by installing a bypass for the undeveloped lot adjacent to College Road (to our west) we were able to treat what we consider to be the ultimate buildout potential for the remainder of the offsite drainage area Our assumptions for this ultimate bwldout included using the existing BUA in the residential section and a 50% allocation for the remaining portions of the 2 parcels that front Northchase Parkway SE That determination Is made considering zoning, front and side yard setback requirements and landscaping requirements (including streetyard buffers) However we would still like to do file reviews on the adjacent developments to ensure using the existing BUA is suitable In those developments All that said, I don't see any reason why this will not work and IKA wants to get back on the submittal calendar as soon as possible If submittal dates are already into December, there Is no reason we will not be able to have this all ironed out and detailed in our plans and calculations by that time Thank you - Richard (Rick) A Moore, PE, LEED AP I Senior Project Manager Tel 910 343 1048 1 Cell 910 386 6359 243 North Front Street I Wilmington, NC 28401 RAMoorepmckimcreed com I htto //www mckimcreed com v MNIQ�4&CREED ENGI Follow us on YouTube I twitter I facebook I Linkedln Visit our NEW websde, www mckimcreed com To send me a file larger than 20MB or a zip rile please click here This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed If you have received this e-mail in error please notify the system manager Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the company Finally, the recipient should check this e-mail and Hall, Christine From. Hall, Christine Sent Thursday, October 08, 2015 4 36 PM To 'Richard (Rick) A Moore' Subject RE signature authority Rick, There is no standard language but the letter has to either be general enough that it allows Mr Hardin to sign any documents on her behalf (it doesn't specify the type of document) or the letter can specifically call out what he can sign on her behalf But if the letter gets too specific and calls out that he can sign on her behalf for erosion control approvals (as an example), I can't take it since stormwater permits are listed Hope that helps) Christine Christine (Nelson) Hall Environmental Engineer NC DEQ Division of Energy, Mineral and Land Resources -State Stormwater Program 127 Cardinal Drive Ext , Wilmington, NC 28405 Direct 910-796-7335 / Main 910-796-7215 / Fax 910-350-2004 / christine hall ncdenr Rov http //portal ncdenr orR/web/Ir/stormwater Email correspondence to and from this address is subject to the North Carolina Public Records taw and may be disclosed to third parties unless the content is exempt by statute or other regulation From Richard (Rick) A Moore [mailto RAMoore@mckimcreed com] Sent Thursday, October 08, 2015 146 PM To Hall, Christine <Christine Hall@ncdenr gov> Subject signature authority Christine - The person at IKA (Refika Bilgic) who can sign documents (according to the Secretary of State website) for them is out of the country until October 26 (IKA is a German company and she is out of the country a lot) Is there some standard language you require when she is giving someone else at the company signature authority for the stormwater permit? Bob Hardin is going to sign on her behalf - he has signature authority for financial and banking documents but I don't think that is good enough for you Thanks, Rm Richard (Rick) A Moore, PE, LEED AP I Senior Project Manager Tel 910 343 1048 1 Cell 910 386 6359 243 North Front Street I Wilmington, NC 28401 RAMoore@mckimcreed com I http //www mckimcreed com 46 V CIZ-EEYD ENGINEERS SURVEYORS Hall, Christine From Hall, Christine Sent Tuesday, September 29, 2015 3 23 PM To 'Richard (Rick) A Moore' Cc Richard Christensen Subject RE IKA Rick, As long as you are still able to collect the runoff from the on -site built -upon areas that are adjacent to the proposed offsite & permeable onsite DA collection system, then you should be fine Christine Christine (Nelson) Hall Environmental Engineer NC DEQ Division of Energy, Mineral and Land Resources - State Stormwater Program 127 Cardinal Drive Ext , Wilmington, NC 28405 Direct 910-796-7335 / Main 910-796-7215 / Fax 910-350-2004 / chnstme hall@ncdenr Rov http //portal ncdenr orR/web/Ir/stormwater Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties unless the content is exempt by statute or other regulation From Richard (Rick) A Moore [mailto RAMoore@mckimcreed com] Sent Tuesday, September 29, 2015 9 58 AM To Hall, Christine <Christine Hall@ncdenr gov> Cc Richard Christensen <RChristensen@mckimcreed com> Subject IKA Christine - Got your message We do not have room on our 8-acre +/- site to treat the runoff from a 12-acre +/- offsite drainage area -and still have room to develop the site to meet our client's needs So we are going to look to bypass the offsite drainage areas as shown in the attached There are 2 cross pipes that bring runoff from north of Northchase Parkway to the NCDCT ditch along our frontage We plan to divert this flow around our system in a conveyance ditch We also plan to install a conveyance ditch along our western boundary to capture any runoff from the parcel west of ours Both of these ditches will flow into a proposed pipe system, isolated from our onsite collection system, and discharge into the downstream conveyance in the same location as the existing pond outlet We will provide a drainage easement along the entire path of the bypass for future access and maintenance Please let me know if this will address the concerns for offsite drainage and limit our pond design criteria to treatment of onsite runoff only Thank you - Rick Richard (Rick) A Moore, PE, LEED AP I Senior Protect Manager -' Tel 910 343 1048 1 Cell 910 386 6359 243 North Front Street I Wilmington NC 28401 RAMoore(a)mckimcreed com I htto //www mckimcreed com 44vk ` ENGINES1�11V1C7 CREED Follow us on YouTube I twitter I facebook I Unkedln Visit our NEW website, www mckimcreed com To send me a file larger than 20MB or a zip file please click here This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed If you have received this e-mail in error please notify the system manager Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessanly represent those of the company Finally, the recipient should check this e-mail and any attachments for the presence of viruses The company accepts no liability for any damage caused by any virus transmitted by this e-mail ra -• 1/ ♦-- a 8- 6 B y 6 � �� e� I - I - ' I j a _ PROPOSED BVL IM t I �� � � 08000 •1 I I� I --- ---_—.__—_-------_------_I ---------- L----------- I r 1 I. I �yy I Z_I II I � � I111 9�EMTA.�• e...d.. �...e.� Ri¢t6%6-- Ux _ ZZA IKA WORK7HCHASEB405 IKA WORKS INC°= cs-1o�4NnIQN &CREEDWESTERN EXPANSION _• PARK NORNEW MANOVER COVNTY NC 0��S•°u �:° IKA PARKWAY°"`°" _ "'°"" ° W7LIAINGTOSITE AND UTILITY PLAN • % ha D1,NRUse NLY FWA ReviewerAfiFA North Carolina Department of Environment and Submit Natural Resources NCDENR Request for Express Permit Review GDnr,rm 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 5 a Permit Coordinator along with a completed DETAILED narrative, site plan (PDF file) and vicinity map (same Items expected In t6e'application y ap ckape of the project location Please include this form in the application package • Asheville Region -Alison Davidson 828-296-4698,allson davfdsonamcdenr pov • Fayetteville or Raleigh Region -David Lee 919-791-4204, david Iaeralncdenr goJ • Mooresville & Winston Salem Region - Marcia Allocco 704.235.2107 or,marcle-elloccordncdenr.gov • Washington Region -Lyn Hardison 252-948.3842 or lyn,hardiscirlo icdenr joy • Wilmington Region -Cameron Weaver 910-796-7303 or cameron weaveroricdenr goy NOTE Project application received after 12 noon will be stamped in the following work day Project Name IKA WESTERN EXPANSION County NEW HANOVER Applicant BOB HARDIN Company IKA WORKS, INC Address 2635 NORTHCHASE PKWY SE City WILMINGTON, State NC Zip 28405-_ Phone 910-452-7059, Fax 910-452-0932 Email bob hardiri fta net Physical Location 2635 NORTHCHASE PKWY SE SW_ NPDES - NPDES _ Wo WO _ E&S , E&S _ Other Project Drams into SMITH CREEK waters - Water classification C SW (for classification see- http.1/tiortai ncdenr crqtweltlwo/pslcsulatassifcations) Project Located in CAPE FEAR River Basin Is project draining to class ORIN waters? N, within Y2 mile and draining to class SA waters N or within 1 mile and draining to class HOW waters? N Engineer/Consultant RICHARD A MOORE, PE Company MCKIM & CREED, INC Address 243 N FRONT STREET City WILMINGTON, Stale NC Zip 28401-_ Phone 910-343-1048, Fax 910-251-8282, Email ramoore@mckimcreed com ffn AUG ® 5 2M PLEASE PROVIDE ESTIMATED INVESTMENT AND EXPECTED EMPLOYMENT, IF AVAILABLE $_ #_JOBS SECTION ONE REQUESTING A SCOPING MEETING ONLY ® Scoping Meeting ONLY ® DWO ❑ DCM, ❑ DLR, ❑ OTHER SECTION TWO CHECK, ONLY THE PROGRAMUS) YOU ARE REQUESTING FOR EXPRESS PERMITTING ❑ 401 Unit ❑ Stream Ongin Determination _ # of stream calls — Please attach TOPO map marking the areas in questions ❑ intermittent/Perennial Determination _ # of stream calls — Please attach TOPO map marking the areas in questions ❑ 401 Water Quality Certification ❑ Isolated Welland (_linear it or _acres) ❑ Riparian Buffer Authorization El Minor Variance ❑ Major General Variance ® State Stormwater ® General ❑ SFR, ❑ SFR < 1 ac ❑ Bkhd & Bl Rmp, ❑ Clear & Grub, ❑ Utility ❑ Other ❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Outlet Swales ❑ Off -site [SW _ (Provide permit #)] ® High Density -Detention Pond i # Treatment Systems [:]High Density-Infiltrabon _ #Treatment Systems '1i07AJ ❑ High Density -Blo Retention _ # Treatment Systems ❑ High Density —SW Wetlands _ # Treatment Systems t1� tt1 ❑ High Density -Other _ # Treatment Systems / ® MOD ® Major ❑ Minor ❑ Plan Revision ❑ Redev Exclusion SW 8$1p91�� de� nntt #) ❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information ❑ Upland Development ❑ Manna Development_ ❑ Urban Waterfront ❑ Land Quality ❑ Erosion and Sedimentation Control Plan with _ acres to be disturbed (CK # (for DENR use)) SECTION THREE —PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECTffor both scoging and express meeting request) Wetlands on Site ❑ Yes ® No Buffer Impacts ❑ No ❑ YES _acre(s) Wetlands Delineation has been completed ❑ Yes ❑ No Isolated weland on Property ❑ Yes ® No US ACOE Approval of Delineation completed ❑ Yes ❑ No 404 Application in Process w/ US ACOE ❑ Yes ❑ No Permit Received from US ACOE ❑ Yes ❑ No For DLNR imr only Fee Splaformuhiple permits (Check#= d Total Fee Amount _ __ - SUBMITTALDATES Fee SUBMITTAL DATES Fee CAMA - _- 0 — $ 1 Variance ( Ma), Min) 1 $ SW (❑ HD, ❑ I.D. ❑ Gen) i $ 401 - $ LQS __ _ — $ Stream Deter— $ NCDENR EXPRESS Auoust 2015 r IKA WESTERN EXPANSION NEW HANOVER COUNTY, NC NCDENR-DWQ-STATE STORMWATER DESIGN NARRATIVE Prepared for IKA WORKS, INC. 2635 Northchase Parkway SE Wilmington, NC 28405 Prepared by 46 `! ENGINEERS StJRV CREED 243 North Front Street Wilmington, NC 28401 (910)343-1048 Pro)ect #1683-0003 (40) AUGUST 2015 IKA WESTERN EXPANSION Project #1683-0003 (40) NEW HANOVER COUNTY, NC DESIGN NARRATIVE PROPOSED PROTECT IKA Works, Inc's North American Headquarters located m the North Chase Industrial Park in New Hanover County is proposing to expand their existing facility to the west A 36,000 square foot budding addition will be constructed on the western side of the existing building In addition the existing asphalt front employee parking lot currently containing 52 parking spaces will be expanded to accommodate 33 additional spaces for a total of 85 parking spaces A loop driveway will also be installed connecting the existing facility with the western part of the tract along with an employee asphalt parking lot containing 20 spaces, concrete sidewalks and an asphalt truck parking/loading/unloading area on the western side of the proposed expansion This project will be contained within the existing parcel of land having an area of 4 53 acres PROPOSED IMPROVEMENTS This project proposes to reconfigure the existing wet detention pond and bringing the new section up to current standards to treat all of the onsite BUA installed/proposed since the original development in the late 1980's This includes a provision of a forebay and littoral shelf, a temporary water quality volume sufficient to treat the 1 5" runoff volume from the permitted site using the newly proposed average depth and construction of a new spillway system for meeting the 2-5 day detention requirements of NCDENR f - . J " 1° 1•) Op° ju °» IKA WESTERN c r '3 ' � t, ey���' EXPANSION SITE 77 O C O I tv`iI, �a © a n e 9 ey7 bn0 a t 19 TI o y r a of ®i . 0 • 00 � • s 0 ° m I/I/' 2AlSo• 0 11V �. 31J W � ��,,,,• •�l (?l I , , NpRTNCH E I � 1 I I -- 1 I I u I I 1WdLx..1 1 m w ., ./'P.,•�`t"��q'�L }, IKA WORKS, CH IKA WORKS, INC "mm� . WESTERN EXPANSION /�2835 NORTHCHASE NEW HANOVER COUNTY NC InN PARKWAY SE exm WILMINGTON NC 28405 SITE PLAN An X 1 �S Lp U �e5V 7 7 v,MCIQM&CREED TO NCDENR Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 ATTENTION Christine Nelson LETTER OF TRANSMITTAL DATr September 24, 2013 PROJECT NO 4853-0012 TASK NO 10 RE IKA Works, Inc North American Headquarters Expansion TRA\SNITTAL NO PAGF I OF 1 WE ARE SENDING ® Originals ❑ Prints ❑ Shop Drawings ❑ Samples n Specifications n Calculations n Other - Quantity Drawing No Rev Description I Status Issue Status Code A Preliminary B Fabrication Only C For Information D Bid E Construction F For Review & Comments G For Approval H See Remarks Action Status Code 1 No Exceptions Taken 2 Make Corrections Noted 3 Other 4 Amend & Resubmit 5 Rejected -See Remarks REMARKS 243 NORTE FRONT STRUT NTI MINGTON NC 28401 (Y10) 3Ai-1048 FAX (910) 251 8282 �c Jason Clark, New Hanover County MCKIM & CREED, Inc. File. McKim and Creed Est EIVE SEP 2 5 2013 BY 5 \4853\0012\ lOLomm\2013 09 24 C Nd,.n Cemfi.w., T,,. Doc Signed Richard A Moore, PE Senior Project Manager Casmer, Jo From Nelson, Christine Sent Tuesday, September 24, 2013 12 26 PM To Casmer,Jo Subject FW IKA Works (SW8 880910) They say the originals are being mailed I have saved the pdf to the server and added the event to BIMS Anything else I need to do? I figured I wouldn't print it out for the file if they are mailing a copy too Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties unless the content is exempt by statute or other regulation From: Richard (Rick) A Moore [marlto RAMoore(o)mcklmcreed com] Sent Tuesday, September 24, 2013 10 57 AM To Nelson, Christine, TClark(a)nhcgov cam Cc: refika bilglcCahka net, bhardm(a)ika net, dannyadamscd)ls3p com Subject IKA Works Christine and Jason - Attached please find a scanned copy of the engineer's certification for the subject stormwater permit Original will follow in the mail to Christine and a copy to Jason Please let me know if you have any questions or need additional information Thanks, Rick Richard (Rick) A Moore, PE, LEED AP I Senior Project Manager Tel 910 251 6665 ext 214 1 Cell 910 386 6359 243 North Front Street I Wilmington, NC 28401 RAMoore aC�mckrmcreed com I http llwww mckimcreed com v� M M&CREED ENGINEERS Follow us on YouTube I twitter I facebook I L nkedln To send me a file larger than 10MB please click here This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed If you have received this e-mail in error please notify the system manager Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the company Finally, the recipient should check this e-mail and any attachments for the presence of viruses The company accepts no liability for any damage caused by any virus transmitted by this e-mail gSy 1 v 0 For DEN Use ONLY lJ ` l Reviewer �• )"' © North Carolina Department of Environment and Submit sft� t� /3 .._ FA Natural Resources t 1 oA NCDENR Request for Express Permit Review Time Confirm FILL-IN all the information below and CHECK the Permits) 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 appbcatio, package of the project location Please include this form in the application package • Asheville Region -Alison Davidson 828-196.4698,alison davidsono_ncdenr qov • Fayetteville or Raleigh Region -David Lee 919-791-4203, david lee(c ncdenr qov • Mooresville & Winston Salem Region - Patrick Grogan 704-235.2107 or Detrick grogan@ncdenr qov • Washington Region -Lyn Hardison 252.948.3842 or Ivn hardisonOncdenr qov • Wilmington Region -Janet Russell 910-796-7302 orlanet russell(cDncdenr qov • Wilmington Region -Cameron Weaver910-796-7303 orcameron weavei@ncdenrgov NOTE Project application received after 12 noon will be stamped in the following work day Permits of Request SW SW — Still SW SW _ Project Name IKA DOMBROWSKI PROPERTY EXPANSION County NEW HANOVER Applicant _ Company IKA WORKS INC Address 2635 NORTHCHASE PARKWAY SE City WILMINGTON, Slate NC Zip 28405-_ Phone 910-452-7059, Fax 910-452-7693, Email refika bilgic@ika net Physical Location 270112717 NORTHCHASE PARKWAY SE, WILMINGTON NC 28405 Project Drains into SMITH CREEK waters — Water classification C SW (please visit here to look up stream classification) Project Located in CAPE FEAR River Basin Is project draining to Glass ORIN waters? N, within'/0 mile and draining to class SA waters N or within i mile and draining to class HOW waters? N Engineer/Consultant RICHARD MOORE, PE Company MCKIM&CREED. INC ••� Address 243 NORTH FRONT ST City WILMINGTON, State NC Zip 28401-_b Phone 910-343-1048, Fax 910-251-8282, Emailramoore@mckimcreed com SECTION ONE REQUESTING A SCOPING MEETING ONLY MAR 1 1 2013 ❑ Scoping Meeting ONLY ® DWO, ElDCM, ❑ DLR, ❑ OTHER SECTION TWO CHECK ONLY THE PROGRAM (S) YOU ARE REQUESTING FOR EXPRESS PERMITTING BY ❑ 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 ® State 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 1 # Treatment Systems ❑ High Density -Infiltration _#Treatment Systems ❑ High Density -Bio-Retention _ # Treatment Systems ❑ High Density —SW Wetlands _ # Treatment Systems ❑ High Density -Other _ # Treatment Systems / ❑ MOD ❑ Major ❑ Minor ❑ Plan Revision ❑ Redev Exclusion SW (Provide Perris) ❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront ® Land Quality ® Erosion and Sedimentation Control Plan with 3 9 acres to be disturbed (CK # (for DENR 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 LENR Lilt Fee Split for multiple permits Check # Total Fee Amount SUBMITTAL DATES Fee III SUBMITTAL DATES Fee CAMA $ Variance (❑ Mal, ElMin) $ SW (❑ HD, ❑ LD, ❑ Gen) $ 401 $ LDS $ Stream Deter,_ $ NCDENR EXPRESS June 2011 TT 9 I I I I vICIN1Tv curl II I I 0 a mo•ma,�n,e � •-ftl i..X �nATe. II II II II asem m.mwie. � I I PROPOSED FUTURE BUILDING av I FFE = 40 5 II II � I I a ,`u � �1&�� IAA SKI OWNTY PROPERTY EXPANSION l _ T NEW HANOVER COUNTY INCNC VEER 13 ��,.' A'a�'��InoW m sm lnopa� ve: a SITE AND UTILITY PLAN NCDENR-DWQ-STATE STORMWATER DESIGN NARRATIVE For NCDENR Wilmington Regional Office - Division of Water Quality 127 Cardmal Drive Wilmmgton NC 28405 (910)796-7215 Owner IKA WORKS, Inc. Dombrowski Property Expansion 2635 Northchase Parkway SE Wilmington, New Hanover County, North Carohna 28405 46. Mt�PE�rree-p+�aa��r•/e,��d By ED V ENGINEERS SURVEYORS PLANNERS 243 North Front Street Wilmington, NC 28401 (910) 343-1048 Project #1683-0002 (40) MARCH 2O13 CA S 0 %- EAL fj 18 � - 02550503 J A IKA Works, Inc. Project #1683-0002 (40) DESIGN NARRATIVE PROPOSED PROTECT IKA Works, Inc's North American Headquarters, located in the Northchase Industrial Development Park of New Hanover County, is proposing to expand their current facility with an additional building and parking on the adjacent Dombrowski property The proposed building is anticipated to be approximately 30,000 total square feet In addition to the new building a new front parking lot will be constructed and contain 65 parking spaces, a rear parking lot will be constructed to accommodate an additional 21 parking spaces and 14 - 18'x60' trailer parking spaces for a total of 100 parking spaces This project will be contained within the two adjacent tracts of land having a total area of 3 92 acres EXISTING SITE The project address is 2701/ 2717 Northchase Parkway SE in Wilmington, NC The project is located directly west of the existing IKA office and butler building 1'he area is currently vacant with intermittent fields and wooded areas within an industrial park The site drains to the west, toward an existing ditch system along Northchase Parkway and ultimately to Smith Creek Smith Creek is classified as a C, Sw stream (Index 18-74-63) The New Hanover County SCS Soil Survey indicates that the soils on the parcel are a mixture of primarily Leon (Le) and Murville (Mu) There are no existing utilities present on the site PROPOSED IMPROVEMENTS This project will be permitted as a high -density project with one wet detention pond to be used for stormwater treatment Wet Pond #1 will capture runoff from the proposed project site All runoff will be piped to this stormwater facility Me proposed pond was designed to treat the proposed built -out condition of a 3 92 acre drainage area with a 59 8% composite impervious area The wet pond treatment volume was calculated using the 15 " design runoff volume required by the NCDENR coastal stormwater regulations Ihis volume will be controlled and released over a 2-5 day period In addition, the pond was designed to reduce peak flows to pre -developed conditions for the 2-, 10-, and 25-yr storm events The pond was designed with a surface area designed for 90% TSS removal The Wet Pond will outlet to an existing ditch draining to the existing pond on the adjacent IKA property SUPPORTING DOCUMENTS 1. Vicinity Map 2. Site Plan 3. USDA Soil Survey 4. SW401 Wet Detention Basin Supplement 5. Wet Pond Retention Calculations The Wet Pond will outlet to an existing ditch draining to the existing pond on the adjacent IKA property. SUPPORTING DOCUMENTS 1. Vicinity Map 2. Site Plan 3. USDA Soil Survey 4. SW401 Wet Detention Basin Supplement 5. Wet Pond Retention Calculations nU 7 Custom Soil Resource Report Soil Map (IKA Adjacent Parking) m�r:>icri 3 1W6" Msp Sr a 11.1706p lWon As¢e16Sxtt"Ie,mN. N M.W" A o o zo 40 60 Fcet 0 45 90 180 270 W 16' 14" 14 ja v jt av 1 J .771 n t a a s k MAP LEGEND Area of Interest (AOIJ Area of Interest(AO1) Salts J Soil Map Units Special Point Features W Blowout ® Borrow Pit Clay Spot 0 Closed Depression )( Gravel Pit Gravelly Spot ® Landfill A. Law Flow as, Marsh or swamp R. Mine or Quarry ® Miscellaneous Water ® Perennial Water V Rock Outcrop + Saline Spot Sandy Spot _ Severely Eroded Spot Sinkhole 3> Slide or Slip f Sodic Spot a Spoil Area a Stony Spot Custom Soil Resource Report Very Stony Spot Wet Spot Other Special Line Features Gully Short Steep Slope Other PaaBcal Features Cihea Water Features I Streams and Canals Transportation M. Rails N Interstate Highways N US Routes Major Roads 0 Loral Roads MAP INFORMATION Map Scale: 1:1,170 if printed on A size (8.5" a 1 V) sheet. The soil surveys that comprise your AOI were mapped at 1:15,840. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shorn at a more detailed scale. Please rely on the bar scale on each map sheet for accurate map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: htlp://websoiSurvey.nres.usda.gov Coordinate System: UTM Zane 18N NAD83 This product is generated from the USDA-NRCS certified data as of the version dates) listed below. Soil Survey Area: New Hanover Courtly, North Carolina Survey Area Data: Version 13, Jul 6, 2012 Date(s) aerial images were photographed: 6/1712ODS The orthophoto or other base map on which the sal lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Custom Soil Resource Report Map Unit Legend (IKA Adjacent Parking) New Hanover County, North Carolina (NCI 29) Map Unit Symbol I Map Unit Name Acres In A01 Percent of A01 Le Leon sand 2.0 50.9% Mu Murville fine sand 20 49.1% Totals for Area of Interest 4.0 100.0% Map Unit Descriptions (IKA Adjacent Parking) The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If 10 Custom Soil Resource Report intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas An identifying symbol precedes the map unit name in the map unit descriptions Each description includes general facts about the unit and gives important soil properties and qualities Soils that have profiles that are almost alike make up a soil senes Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use On the basis of such differences, a soil series is divided into sod phases Most of the areas shown on the detailed soil maps are phases of soil series The name of a soil phase commonly indicates a feature that affects use or management For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series Some map units are made up of two or more major sods or miscellaneous areas These map units are complexes, associations, or undifferentiated groups A complex consists of two or more sods or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas Alpha -Beta complex, 0 to 6 percent slopes, is an example An association is made up of two or more geographically associated sods or miscellaneous areas that are shown as one unit on the maps Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar Alpha - Beta association, 0 to 2 percent slopes, is an example An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them Alpha and Beta soils, 0 to 2 percent slopes, is an example Some surveys include miscellaneous areas Such areas have little or no soil material and support little or no vegetation Rock outcrop is an example Permit No (robirpmridedbyOWCh TA O`er U� WAfp4 �G NCDENR 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 panted, fified out and submitted along with all of the required information I- PROJECT INFORMATION r, - e;, '` ' Protect name IKA Works Inc - Dombrowskl Property Expansion Contact person Richard A Moore PE Phone number 910-M3.1048 Date 302013 Drainage area number 1 II DESIGN INFORMATION - P Site Characteristics Drainage area 170.760 fe Impervious area, post -development 102.074 f? % impervious 59 78 % Design rainfall depth 15 in Storage Volume NonSA Waters Minimum volume required 12,551 Its Volume provided 14,937 ft' OK volume provided is equal to or in excess of volume required Storage Volume SA Wafers 1 5' argot volume it Pre development 1 yr, 24 hr nnlofi t1 Post development 1 yr, 244hr runoff it, Minimum volume required 10 Volume provided it, Peak Flow Calculations Is the prelpost control of the tyr 24hr storm peak flow requuedl N (Y or N) 1 yr, 24 hr rainfall depth 3 8 in Rational C, pre development (witless) Rational C, post development (unttless) Rainfall intensity 1-yr, 24 hr storm m1hr Pre -development 1-yr, 24 hr peak flow t'isec Post -development 1 yr, 24-hr peak fiow fl'lsec Pre/Post 1-yr 24 hr peak flow control RI/sec Elevations Temporary pool elevation 34 70 but Permanent pool elevation 34 00 fmsl SHIAT elevation (approx at the perm pool elevation) 34 00 fmsl Top of tot vegetated shelf elevation 3450 hnsl Bottom of 1011 vegetated shelf elevation 33 50 fmsl Sediment deanout, top elevation (bottom of pond) 30 00 feast Sediment clearrout bottom elevation 2900 fmst Sediment storage provided 100 it Is there additional volume stored above the state -required temp pool? N (Y or N) Elevation of the top of the additional volume frost Foam SW401 Wei Detention Dusm Rev 9<118112 Parts I ti 11 Design Sianmory Pape 1 of 2 Permit No _ no,be'provkled by DWO) II' DESIGN INFORMATION Surface Areas Area temporary pool 23184 fe Area REQUIRED permanent pool 11 953 ft' SAIDA ratio !Dou(m0ess) Area PROVIDED permanent pool, A�y ,roy 18 701 ft' OK Area, bottom of 10111 vegetated shelf Ate, i„m 14,234 ft' Area, sediment ceanoul top elevabon (bottom of pond). Abk pert 6,636 ft' Volumes Volume, temporary pool 14 937 ft1 OK Volume permanent pool Vpe„ r, you 49,676 ft' Volume, forebey (sum of forebays If more than one forebay) 9161 ft' Forebay % of permanent pool volume 18 4% % OK SAIDA Table Data Design TSS removal 90 % Coastal SAIDA Table Used? Y (Y or N) MountamlPiedmont SAIDA Table Used? N (Y or N) SAIDA ratio 7 DO (umtiess) Average depth (used In SAIDA table) Calculation option 1 used? (See Figure 10 21b) N (Y or N) Volume permanent pool V.,, 49676 ft Area provided permanent pool, Ap„..,, 18 701 tt' Average depth calculated 301 If OK Average depth used in SAIDA dr, (Round to nearest 0 511) 3 0 ft OK Calculation option 2 used? (See Figure 10 21b) Y (Y or N) Area provided, permanent pool An,i,ym 18,701 tt' Area, bottom of 10ft vegetated shelf 14,234 ft' Area sediment cleanout lop elevation (bottom of pond), Aw pen,, 6636 ft' 'Depth (distance b/w bottom of If ft shelf and top of sediment) 3 50 ft Average depth calculated 301 it OK Average depth used in SAIDA, it., (Round to down to nearest 0 511) 3 0 ft OK Drawdown Calculations Drawdown through onfice? Y (Y or N) Diameter of onfice (d circular) 2 00 in Area of orifice (if non circular) in Coefficient of discharge CO) 060 (umlless) Driving head (He) 021 it Drawdown through weir? N (Y or N) Weir type (unitiess) Coefficient of discharge (G.) (undless) Length of weir (L) It Driving head (H) ft Pre-0evelopment 1 yr 24 hr peak flow ft'Isec Post development 1 yr, 24-hr peak flow ft'/sec Storage volume discharge rate (through discharge orifice or wen) 005 RP/sec Storage volume discharge rate greater than pre-dev 1y24hr Storage volume drawdown time 3 05 days OK draws down in 2 5 days Additional Information Vegetated side slopes 3 1 OK Vegetated shelf slope 10 1 OK Vegetated shelf width 100ft OK Length of nowpath to wifth ratio 5 1 OK Length to width ratio 50 1 OK Trash rack for overflow & onfice? Y (Y or N) OK Freeboard provided 23 It OK Vegetated filler provided? N (Y or N) OK Recorded drainage easement provided? Y (Y or N) OK Capures all runoff at ultimate build -out? Y (Y or N) OK Dram mechanism for maintenance or emergencies is Temporary pump out form SW401 Wet Detention Basin Rev 9 41IW12 Pads 1 & 11 Design Summary Page 2 of 2 IXA Adpcent Property NC Retention Requirements Pond 01 Ssm Dala Total DA 392 ACRF VnNe from CAD On Site Drainage, Am ?w ACRE Vdarfree, CAD Off 9,k Drama, Ana ow ACRE Vdorfrom CAD lmpernous 2M ACRE Vduefrmn CAD Buddai" 0 SF Vclaefram CAD straeu 0 SF Vdrnfrcm CAD Parinng I@Wa 5F Valinfrrrn CAD Sidewalks a SF Vdarfmm CAD Drutre (kl%r o SP Vduefmm CAD FUNre a SF Vda.fmm CAD Eusnng WA 0 SF Vdwfrom CAD Impenneas C,(Ienaev n.f Drainage hn I:IFC[ perrroua 5918ry A.Mam Diming, And'IM Tnalmrnt Volume Runoff Corfhcumt. Rv 0510 WIN Rr-O a9.0 fhol Klmpmrruur2 Regmmi In Runoff Volume 12,551 a I S nu t Re 1,01/22 m (Told DA) Vdumr h,,norm rynnomnr, Pt! G nezl hl(sw mounded Tlinaal Volume 11,937 Cr orifice lormwater Pon Banamof Pond FJevnM1nn Mom Nay 290 FI t'due relied by Jargorr aa(omaf Ymui LRwaleon Font», vo IT SMementstarage Flevauon Main Bay 10.o FT Vdur erienrd by desrgmr `sdemem 9ongu Flevahon Fwrbay 310 Fr Sc6menl s(oragr Volanx 5295 CI Pond urinrm brlmu uQrmml amugr ilia Pemrnr nat Foal Flewahon 31A0 FT Valae eef,cleff by dwrn Temporary Ynol Elevation 34 20 IT Flemlrmr igthriiee"hril onfue Avrai, Deplit Provd,k 301 IT Snformula Maur Reguiead SA(DA 1I for 90%155 Nanwvai 7M Vulurfemn 90. In rrmmW Bran Regmnd Pennaemt Pool Sarfnce Aeon 11953 SF (ft q it SAIDA Ratio) ITdal Drainage Anel Pr —de,] Neniroent Pao) Soe(are Ana IBM SF Vdurfrnm nngnsloragr'ahsiweens Fiow Pat flaw. I�lh FT Vdnrfien CAD Navn Milde A Fr Vdaefrren CAD fnrrage) Nasml IN ralla 5 Bafnrleng/h l lmm uulih Now lan,h 360 FP Dnhrni fmrn min Pipe to wlln slur ion Flow path width 75 Fr RrgvreW sv./m mml/lmu MrgrX Flow path W-Ila 5 Floa length/flmnpathundrh Nrebav Tobt pored Wd nw kJoern pnrnauenl pn9 elewlmn Yermnmm Poni Volume Jq NN CF b ndrmmf mm�gr Ae•mrirn Tnlal Reymnd Fonhay Nalama 72J0 CF 1O%nf l'n'nnnnem lwlenlume Prwdrd rWumrteruenr p.mmrrQ 2sW rirvb Pmvtdrrl Valama Fan -bay 2252 Cp srdrmrnf wa,., dew' ar l nIA lontwy %oI Peemrnem Nat 21% Tald he. id 22% Ok Dnwdow Uamekr of pno'ce iow 0e. Chrfica 21a1 IN War rrbrredhy it.", Onhee Elevation 3aoff Fr Ine"rimm�m o)JrmWrmm onfae Wine[levanon of t3ullet Strum, JFm FI Eleanw. of am nerl hghefuor Total tlevanon Head Above Nor lnven 062 FT Total 'j,an: n lead M1me rmfn ofm5firr Average Fkvaeon Hmd AMve Wen lnven 021 FT U3of... aldrwnmrhmd Cd, Cexfhcrem of Drschmgr 0w Ndae clelw by drarenrr t}Cd(Pd i(Onneeferof Urrfm) O f(1tII Q Floweae Through Low Oow Onfiae 0(A CFS enll^'/e 12 32 2 fAarge HnalWIR Diawdawn Tane(I5 renoff palwnq 105 DAYS 15 Runuf/ Vo1uneIT1.0r flon,h Wvr18610a Drawdown TimeD ye runali vohmu) 2.Yd DAYS 15 yr Runoff W.—M.." rhrit hWbla6400 Average Depth fumn.la it., Avmge depth of perrnanent pool to uw intie SA rDA tables (R) A =025%II+Aaa_r+.Y + ' rwy 2"aa..wre�x Depth A,,, rw l` S kl6CnoWM0.TaeJa=l3_02 19 W al Dolenlbn Patella IKA Adjacent Property I Stage -Storage Calculations for the Proposed Wet Detention Pond Pond 91 Stage/Storage Above Permanent Pool Cumulative Contour Incremental Volume, S Contour Area (SF) Volume (CF) (CF) 340 18 701 0 0 —Permanent Pool 345 22 695 10,349 10,349 —Top of Shelf 3470 23,184 4,588 14 937 '-Temporary Pool 350 23,923 7,066 22003 360 26,423 25,173 47,176 370 28,980 27702 74 K7 —Top of Pond SlagelStorage Below Permanent Pool Total(M. s.r. ron�.,) Cumulative Contour Incrernentot Volume,S Contour Area(SF) Volume(CF) (CF) 290 3,954 0 0 Pond Bottom 300 6616 5,295 5,295 -Sed Storage 310 8 665 7 651 12,946 320 101808 9,737 22682 330 13,064 11936 34,618 335 14234 6825 41,443 Bottom of Shelf 340 18,701 8,234 49676 —Permanent Pool rorebay Cumulative Contour Inremental Valium, S Contour Area (SF) Volume (CF) (a) 300 1,186 0 0 Pond Bottom 310 1663 1425 1,425 ^Sed Storage 320 2197 1,930 3,355 330 2 788 2,493 5,847 335 3,104 1,473 7,320 '-Bottom of Shelf 340 4,261 1941 9161 Permanent Pool S %168310602120-Teah12013_02 13 Wet Detention Pond As