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HomeMy WebLinkAboutSW8060802_HISTORICAL FILE_20060921STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO SW8 Oh0$02 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS 4 HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 2ooO p Oq 2k YYYYMMDD o�oF w/,rF9oG 1 September 21 2006 Tommy Davis President Tommy Davis Construction 6423 Hawksbill Drive Wilmington NC 28409 Subject Stormwater Permit No SW8 060802 Durango Place High Density Project New Hanover County Dear Mr Davis M chacl I Easl , G I ri o N II am G Ross Jr Secretary North C I Olt is Dep Intat It of Lnvi onmc I and Natural Res u c s Alan W Klimek I C Director Di Isi of N mu Quaht) The Wilmington Regional Office received a complete Stormwater Management Permit Application for Durango Place on August 22 2006 Staff review of the plans and specifications has determined that the protect as proposed will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H 1000 We are forwarding Permit No SW8 060802 dated September 21 2006 for the construction of the subject protect This permit shall be effective from the date of issuance until September 21 2016 and shall be subject to the conditions and limitations as specified therein Please pay special attention to the Operation and Maintenance requirements in this permit Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems If any parts requirements or limitations contained in this permit are unacceptable you have the right to request an adtudicatory hearing upon written request within sixty (60) days following receipt of this permit This request must be in the form of a written petition conforming to Chapter 150E of the North Carolina General Statutes and filed with the Office of Administrative Hearings P O Drawer 27447 Raleigh NC 27611 7447 Unless such demands are made this permit shall be final and binding If you have any questions or need additional information concerning this matter please contact Linda Lewis or me at (910) 796 7215 Slncer I � E and Bec Regional Supervisor Surface Water Protection Section ENB/arl S \WQS\STORMWATER\PERMIT\060802 sep06 cc Phil Tripp P E Tripp Engineering Tony Roberts New Hanover County Building Inspections City of Wilmington Development Services Beth E Wetherill New Hanover County Engineering Linda Lewis Wilmington Regional Office Central Files Nonh C of na D a on of N ater Qual 1) 1 7 Ca d nal Dirt Gt ns o Nil in ton NC 8405 1 hone (910) 796 7215 N ih nbt R Li I Olt i.e Internet Hew It n it qt if IN k Fax (910) 350 0004 NorthCarolma Naturally CnSlemL Set ee 1 877 623 6748 An Equal Opportunity/Affirmative Action Employer— 50 / Recycied/10 / Post Consumer Paper State Stormwater Management Systems Permit No SW8 060802 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143 General Statutes of North Carolina as amended and other applicable Laws Rules and Regulations PERMISSION IS HEREBY GRANTED TO Tommy Davis & Tommy Davis Construction Durango Place 222 Lullwater Drive Wilmington New Hanover County FOR THE construction operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H 1000 (hereafter referred to as the stormwater rules and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit This permit shall be effective from the date of issuance until September 21 2016 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 This stormwater system has been approved for the management of stormwater runoff as described in Section 16 on page 3 of this permit The stormwater control has been designed to handle the runoff from 45 057 square feet of impervious area The tract will be limited to the amount of built upon area indicated on page 3 of this permit and per approved plans This permit provides no allocation for any future built upon area All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements The final plats for the project will be recorded showing all such required easements in accordance with the approved plans 5 The runoff from all built upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system Page 2 of 7 State Stormwater Management Systems Permit No SW8 060802 0 The following design criteria have been provided in the wet detention pond and must be maintained at design condition a Drainage Area acres 2 35 Onsite ft 102 171 Offsite ft2 0 b Total Impervious Surfaces ft2 45 057 c Design Storm inches 1 0 d Pond Depth feet 60 e TSS removal efficiency 90% f Permanent Pool Elevation FMSL 440 g Permanent Pool Surface Area ft2 3 105 h Permitted Storage Volume ft3 5 775 1 Temporary Storage Elevation FMSL 455 I Controlling Orifice k Permitted Forebay Volume ft3 1 Receiving Stream/River Basin m Stream Index Number n Classification of Water Body II SCHEDULE OF COMPLIANCE 0 75 0 pipe 1 917 UT Smith Creek / Cape Fear 187463 C SW 1 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 2 During construction erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately 3 The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including but not limited to a Semiannual scheduled inspections (every 6 months) b Sediment removal c Mowing and revegetation of slopes and the vegetated filter d Immediate repair of eroded areas e Maintenance of all slopes in accordance with approved plans and specifications f Debris removal and unclogging of outlet structure orifice device flow spreader catch basins and piping g Access to the outlet structure must be available at all times Page 3 of 7 State Stormwater Management Systems Permit No SW8 060802 4 Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ The records will indicate the date activity name of person performing the work and what actions were taken 5 Decorative spray fountains will be allowed in the stormwater treatment system subject to the following criteria a The fountain must draw its water from less than 2 below the permanent pool surface b Separated units where the nozzle pump and intake are connected by tubing may be used only if they draw water from the surface in the deepest part of the pond c The failing water from the fountain must be centered in the pond away from the shoreline d The maximum horsepower for a fountain in this pond is 1/8 horsepower 6 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 8 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 9 Access to the stormwater facilities shall be maintained via appropriate easements at all times 10 The permittee shall submit to the Director and shall have received approval for revised plans specifications and calculations prior to construction for any modification to the approved plans including but not limited to those listed below a Any revision to any item shown on the approved plans including the stormwater management measures built upon area details etc b Project name change c Transfer of ownership d Redesign or addition to the approved amount of built upon area or to the drainage area e Further subdivision acquisition lease or sale of all or part of the project area The project area is defined as all property owned by the permittee for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought f Filling in altering or piping of any vegetative conveyance shown on the approved plan 11 The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans prior to construction 12 A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction Page 4 of 7 State Stormwater Management Systems Permit No SW8 060802 13 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 III GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director In the event of a change of ownership or a name change the permittee must submit a formal permit transfer request to the Division of Water Quality accompanied by a completed name/ownership change form documentation from the parties involved and other supporting materials as may be appropriate The approval of this request will be considered on its merits and may or may not be approved The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality in accordance with North Carolina General Statute 143 215 6A to 143 215 6C 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 In the event that the facilities fail to perform satisfactorily including the creation of nuisance conditions the Permittee shall take immediate corrective action including those as may be required by this Division such as the construction of additional or replacement stormwater management systems 5 The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility 6 The permit may be modified revoked and reissued or terminated for cause The filing of a request for a permit modification revocation and reissuance or termination does not stay any permit condition 7 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 8 Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit 9 The permittee shall notify the Division any name ownership or mailing address changes within 30 days Permit issued this the 21st day of September 2006 NORTH CAROtINA ENVIRONMENTAL MANAGEMENT COMMISSION forHlan vv IVImeK V t Ulrecior Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 a OFFICE USE ONLY Date Received Fee Paid Permit Number p� Hoto ©a �531 5w 0/o0 O State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I GENERAL INFORMATION 1 Applicants name (specify the name of the corporation individual etc who owns the project) Tommy Davis Construction 2 Print Owner/Signing Official s name and title (person legally responsible for facility and compliance) Tommy Davis, President 3 Mailing Address for person listed in item 2 above City Wilmington State NC Zip 28409 Telephone Number 4 Project Name (subdivision facility or establishment name — should be consistent with project name on plans specifications letters operation and maintenance agreements etc ) 5 Location of Project (street address) City Wilmington County New Hanover 6 Directions to project (from nearest major intersection) from the intersection of NCI 32 and US 17 travel 0 75 mile west to Lullwater Drive Turn left onto Lullwater and travel aporox 0 39 miles Site is on the right 7 Latitude N 34 14 24 Longitude W 77 52 41 of project 8 Contact person who can answer questions about the project Name Charles Cazier Telephone Number 910 763 5100 II PERMIT INFORMATION 1 Specify whether project is (check one) X New Renewal Modification Form S W U 101 Version 3 99 Page 1 of 4 2 If this application is being submitted as the result of a renewal or modification to an existing permit list The existing permit number and its issue date (if known) 3 Specify the type of project (check one) Low Density X High Density Redevelop General Permit Other 4 Additional Project Requirements (check applicable blanks) CAMA Major X Sedimentation/Erosion Control _ 404//401 Permit _NPDES Stormwater information on required state permits can be obtained by contacting the Customer Service Center at 1 877 623 6748 III PROJECT INFORMATION 1 In the space provided below summarize how stormwater will be treated Also attach a detailed narrative (one to two pages) describing stormwater management for the project i S-?4-G3 2 Stormwater runoff from this project drams to the Cape Fear River basin 3 Total Project Area 235 acres 5 How many drainage basins does the project have? 1 4 Project Built Upon Area 450 % 6 Complete the following information for each drainage area If there are more than two drainage areas in the project attach an additional sheet with the information for each area provided in the same format as below Basin Information Drainage Basin I Drainage Basin 2 Receiving Stream Name UT to Smith Creek Receiving Stream Class C Sw Dramage Basin Area 102 171 sf/ 2 35 ac Existing Impervious * Area 0 Proposed Impervious * Area 45 057 sf / 1 03 ac % impervious* Area (total) 45 0% Impervious * Surface Area Dramagel3asm 1 Drainage, Basin 2 On site Buildings 17 616 sf / 0 0 40c On site Streets 0 On site Parking 21 506 sf / 0 49 ac On site Sidewalks 5 935 sf / 0 14 ac Other on site 0 Off site 0 Total Y=45 057 sf/ 1 03 ac E_ * Impervious area is defined as the built upon area including but not limited to buildings roads parking areas sidewalks gravel areas etc Form SWU 101 Version 3 99 Page 2 of 4 How was the off site impervious area listed above derived N/A IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS I he following italicized deed restrictions and protective covenants are required to be recorded for all subdivisions outparcels and future development prior to the sale of any lot If lot sizes vary significantly a table listing each lot number size and the allowable built upon area for each lot must be provided as an attachment I The following covenants are intended to ensure ongoing compliance with state stormwater management permit number as issued by the Division of Water Quality These covenants may not be changed or deleted without the consent of the State 2 No more than square feet of any lot shall be covered by structures of impervious materials Impervious materials include asphalt gravel concrete brief stone slate or similar material but do not include wood decking or the water surface ofswimmuigpools 3 Swales shall not be filled in piped or altered except as necessary, to provide driveway crossings 4 Built upon area in excess of the permated amount requires a state stornwater management permit modificationprior to construction 5 Allpermitted runofffrom outparcels or future development shall be directed into the permitted stormwater control system These connections to the stormwater control system shall be performed in a mariner that maintains the integrity and performance of the system aspermitted By your signature below you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above that the covenants will be binding on all parties and persons claiming under them that they will run with the land that the required covenants cannot be changed or deleted without concurrence from the State and that they will be recorded prior to the sale of any lot V SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project Contact the Stormwater and General Permits Unit at (910) 733 5083 for the status and availability of these forms Form SWU 102 Form SWU 103 Form SWU 104 Form SWU 105 Form SWU 106 Fonn SWU 107 Form SWU 108 Form SWU 109 Wet Detention Basin Supplement Infiltration Basin Supplement Low Density Supplement Curb Outlet System Supplement Off Site System Supplement Underground Infiltration Trench Supplement Neuse River Basin Supplement Innovative Best Management Practice Supplement Form SWU 101 Version 3 99 Page 3 of VI SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ) A complete package includes all of the items listed below The complete application package should be submitted to the appropriate DWQ Regional Office 1 Please indicate that you have provided the following required information by initialing in the space provided next to each item s Initials Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable Supplement Form(s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment/management Two copies of plans and specifications including Development/Project name Engineer and firm Legend North arrow Scale Revision number and date Mean high water line Dimensioned property/project boundary Location map with named streets or NCSR numbers Original contours proposed contours spot elevations finished floor elevations Details of roads drainage features collection systems and stormwater control measures Wetlands delineated or a note on plans that none exist Existing drainage (including off site) drainage easements pipe sizes runoff calculations Drainage areas delineated Vegetated buffers (where required) VIl AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf please complete this section Designated agent (individual or firm) Tripp Engineering, P C Mailing Address City WdminZon State NC Zip 28401 Phone (910)763 5100 Fax (910)763 5631 VIII APPLICANT S CERTIFICATION 1 (print or type name of person listed in General Information item 2) Tommy Davis 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 Apd7that the proposed project complies with the requirements of 15A NCAC 2H 1000 Date Form SWU 101 Version 3 99 Page 4 of TRIPP ENGINEERING, P.C. 0 419 Chestnut Street Wilmington North Carolina 28401 Phone (910) 763 5100 • FAX (910) 763 5631 August 22 2006 NCDENR Division Water Quality 127 Cardinal Drive Wilmington, NC 28405 3845 Attn Ms Linda Lewis Re Durango Place SW8 060802 TE 06005 Dear Linda In response to your correspondence dated August 8 2006 we offer the following 1 Signed sealed calculations are enclosed 2 Dimensioning of buildings parking sidewalks and normal pool have been completed 3 Plans etc have been corrected to 45 5 4 Supplement has been corrected to 0 75 5 A corrected vicinity map has been provided Please review for approval and contact us with any questions comments or if you need additional information Thank you Sincerely, Tripp Engineering, P C arles D Cazier, E I CDC dcb Eric 822/2006 Dur ngo Place 06005 JWH P nd Calcul bons Total Drama a Area s ft acres 101 930 1 234 Ira ervious Area Land Use sq ft acres buildings 17 616 040 ren / s haft 21 506 049 sidewalks 5 935 014 Total 45 057 1 03 St anwater Calculat Tim of Concentration Hydraulic Length (L) 368 ft change in H ight(H) 6 ft T (L /H) 1128 360 min Flow for 2 y r 6 hour Storm (02) Q E (C E) x (I ) x (Area) 2 49 cfs QP ,r (C osr) x (I ) x (Area) 5 57 cfs CN (98)(A imp) (60)(1 b mp) 77 P 3 30 in for2yr 6 hr storm S 1000/CN 10 299 Depth (D) [P (0 2)(S)] / [P (0 8)(S)] T in t Pe k Flow T [(43 5)(D)'Area)1/0 y7 23 46 min Detenb P nd Design P d Size Elev a n R Surface Area ft N rm I Pool 4400 3 105 Flood Pool 4550 4 595 Top of Bank 4800 7 354 B R in f Pool 3800 133 Pr vid d Star ge Volume Vol [(Normal p of SA Flood Pool SA) / 2] x (F P el v N P elev ) 5 775 cu ft b imp ry us 0 442 442,6 say 450A CPRE 025 Crow (A imp)(95) (i b imp)(25) 056 4 25 m/h o 4 92 in/hr Flow f 10 year 6 h Storm (Q o) Q E (CP E) x (1a) x (Area) 2 88 cfs 0 sr (C sr) x (IZE) x (Area) 6 45 cfs CN (98)(,6 imp) + (60)(1 A mp ) 77 P— 482 for 10 yr 6h form S 1000/CN 10 299 Depth (D) [P (0 2)(S)]2 / [P (0 8)(S)] T in t Peak Flow T [(43 5)(D)(A )] / Q sr 3905 mI State Surf A Re um me t t normal pool P nd side slop 3 1 De th be[ w N P 6 R SAIDA 00258 (Chart f 90 b TSS R in I for Wet D t nt Pond with t V g tative Fiite Required SA (SA/DA) x (Total D g A ea) 2 630 q It t� FARO Ii- �FESs/o %i'yY SEAL 4 Z 17374 �OVGINE� oORE 'fill f r t 1 f unoff 05 009(A imp) 0447833 V (D gn rainfall)(Rv)(D g Area) OM- 06005pond 1 of 2 Pam- , t 1 9 JAw3 �1s iCCCt ��� "ell 8/22/2006 Durang Place JWH Pond Calculate s P nd V lum Bottom SA 133 sq ft No" I Pool SA 3 105 q ft Vol [(N P SA Bottom SA) / 2] x (N P I Bottom el) 9714 cu ft For Required Volume Vol 20,6 of storage volume 943 cu ft Outlet Structure D sign Flow for 2 day drawdown f r1st1 f t rm%ater Q — Requ red V I / 172 800 se (2 days) 0022 f 71 R quired Area of Pip fo 2 day drawdown A Q/ [Cd x SQRT(2 x g x h)] Cd 06 9 322 ft/ h (F P ele N P elev) /2 0 75 It A 0 0053 sq ft D meter of Pipe f r 2 d y dr wd win DIA SQRT[(A x 4) / pi] 0 0820 ft 098 in Use 0 75 in diameter p pe Outlet Structure Ch k U ng 4 x 4 Basin Perimeter L 16 ft Q CIA C (,6 mp)(95) (1 bimp)(25) 056 I 4 92 in for a 25 yr St m A 2 34 A 645 f Q Cwx LxH H IQ / (Cw L)]v0 Cw — 3 0 26 ft P k etevathon 0 d p I I t o+ H 45 76 ft Pr vided V lum Bottom SA 105 sq ft N m I Pool SA 1 173 sq ft Vol [(N P SA Bottom SA) / 21 x (N P el B ttom I ) 1 917 cu ft Flow for 5d y dr wdown f 1 t t of stormwat r Q R quued Vol 1432000 (5 days) 0 009 cfs Required A f Pipe for 5 day or wd wn A Q/[Cd x SQRT(2 x g x h)] Cd 06 9 322 ft/s h (F P elev, N P lev) 12 0 75 ft A 00021 so ft Diameter f P p f r 5 day drawdow DIA SQRT((A x 4) / pi] 00519 ft 062 n 06005 06005p nd 2 of 2 SW8 060802 Express Review comments Durango Place Subject SW8 060802 Express Review comments Durango Place From Linda Lewis <lmda lewts@ncmail net> Date Tue 08 Aug 2006 17 49 05 0400 To Phil Tripp <PTnpp@ec rr com> Phil Attached please find my Express review comments for this project Linda 060802 aug06 doe Content Type appltcation/msword Content Encoding base64 I of 1 8/8/2006 5 50 PM wArF9 J1 � 1 August 8 2006 Mr Tommy Davis President Tommy Davis Construction 6423 Hawksbill Drive Wilmington NC 28409 Subject Request for Additional Information Stormwater Project No SW8 060802 Durango Place New Hanover County Dear Mr Davis M chael F Easley Go mo Will am G Ross 1 S etary North Carolina Department of En t onment and Nat al Resou ces Alan W Klimek P E Di to Dt tsion of Wate Q ally The Wilmington Regional Office received a Stormwater Management Permit Application for Durango Place on August 8 2006 A preliminary review of that information has determined that the application is not complete The following information is needed to continue the stormwater review 1 Please seal the detention pond sizing calculations 2 Please provide dimensions for the buildings parking lot sidewalks and for each line and arc of the permanent pool contour 3 The pond statistics listed at the bottom of sheet C1 indicate that the State Flood Pool elevation is 46 0 however the pond section detail the calculations and the supplement all list it as 45 5 4 The calculations and the plan details indicate that the orifice size is 0 75 fd however the supplement reports an orifice of 1 0 5 Please add the nearest intersection of two major roads to the vicinity map A major road is any 1 2 or 3 digit NC US or interstate highway Ideally the vicinity map should be geared toward driving to the site from Wilmington Please note that this request for additional information is in response to a preliminary review The requested information should be received in this Office prior to August 22 2006 or the application will be returned as incomplete The return of a project will necessitate resubmittal of all required items including the application fee If you need additional time to submit the information please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter The request must indicate the date by which you expect to submit the required information The construction of any impervious surfaces other than a construction entrance under an approved Sedimentation Erosion Control Plan is a violation of NCGS 143 215 1 and is subject to enforcement action pursuant to NCGS 143 215 6A on rCarolina ura/!y No th C I D son of Watcr Quahty 127 Ca dmal D e E t so W Im gin NC 28405 Phone (910) 796 7215 Cast in S iv ce R Im gto Regional Office I temet '. cwat as I tv o e Fax (910) 350 2004 1 877 623 6749 An Equal Opportunity/Affirmative Action Employer 50 / Recycled/10/ Post Consumer Paper ILV,MB August 8 2006 Stormwater Application No SW8 060802 Please reference the State assigned project number on all correspondence Any original documents that need to be revised have been sent to the engineer or agent All original documents must be returned or new originals must be provided Copies are not acceptable If you have any questions concerning this matter please feel free to call me at (910) 796 7335 Sincerely Linda Lewis Environmental Engineer ENB/arl S\WQS\STORMWATERWDDINFO\2006\060802 aug06 cc Phil Tripp P E Tripp Engineering Linda Lewis Page 2 of 2 aqP SS- LL $-F6�9 TRIPP ENGINEERING, P.C. ivL%: / -H9 419 Chestnut Street kr Wilmington North Carolina 28401 Phone (910) 763 5100 • FAX (910) 763 5631 August 4 2006 NCDENR Division Water Quality 127 Cardinal Drive Wilmington, NC 28405 3845 Attn Mr Cameron Weaver Re Durango Place — EXPRESS REVIEW Wilmington, NC TE 06005 Dear Cameron RECEIVED AUG 0 8 2006 5 '8 o�ogU 2 Enclosed please find two (2) sets of plans one (1) signed original and one (1) copy of the application form with narrative one (1) wet detention basin supplement two (2) sets of calculations and one check for the express review fee Please review for approval and contact us with any questions or comments Thank you Sincerely, Tripp Engineering P C jmql�Vt� Jennifer Rohde JLR dcb Enc JUL 03 2006 09 19A Tripp Engineering 9107635631 page 1 1%7 Date 07/03/06 TRIPP ENGINEERING, P.C. 419 Chestnut Street, Wilmington NC 28401 Phone (910) 763 5100 FAX (910) 763 5631 Lmail tnppeng@ec rr com A�CeI�l • . LETTER OF TRANSMITTAL Attention Cameron Weaver Subject EXPRESS PERMIT REVIEW - Duranoo Place X FAX TRANSMITTAL NUMBER OF PAGES INCLUDES COVER 4 I am sending you ( X ) ATTACHED ( ) UNDER SEPARATE COVER ( ) Prints ( ) Tracings ( ) Copy of letter ( ) Specifications ( X ) Other Copies Item No Description -- 1 Express Permit Review Reouest 1 S ormwater Narrative t Vicinity Map These are transmitted as checked below ( ) For Approval ( X ) For Your Use ( ) Sign & Return ( ) Review Remarks Please let us know the time and date for the pre aR2lcatfon meeting cc Signed Charlie Cazler JUL 63 2006 09 20A Tripp Engineering 9107635631 page 2 MXWA NCDENR North Carolina Department of Environment and Natural Resources 127 Cardinal Drive E tension Wilmington NC 26405 (910)3953900 FAX (910)350-2004 Request for Express Permit Review FILL IN sll information below and CHECK required Pormrt(s) FAX or small to Cameron Weaver@ncmail net along with a narrative and vicinity map of the project location Protects must be submitted by 9 00 A M of the review date unless prior arrangements are made APPLICANT Name Tommy Davis owner Company Tommy Davis Construction Address 6423 Hawksbill Drive City/State Wilmington NC Zp 28409 County New Hanover Phone 910 350.0425 Fax Email PROJECT Name Durango Place PROJECT SYSTEM(S) TRIBUTARY TO Smith Creek (STREAM NAME) C Sw RIVER BASIN ENGINEER/CONSULTANT Chades Cazier Company Tripp Engineering State or National Environmental Policy Act (SEPA NEPA) — EA or EIS Required ❑ STREAM ORIGIN Determination, # of stream calls Stream ® STORMWATER ❑ Low Density ® High Density Detention Pond ❑ High Density Other Wetlands MUST be addressed below ❑ Low Density Curb & Gutter ❑ High Density Infiltration ❑ Off Site ❑ COASTAL ❑ Excavation & Fill _ ❑ Bridges & Culverts Q Structures Information MANAGEMENT ❑ Upland Development ❑ Manna Development ❑ Urban Waterfront ❑ LAND QUAUTY ❑ Erosion and Sedimentation Control Plan with acres to be disturbed WETLANDS (401) Wetlands on Property ® Yes ❑ No Isolate Wetlands on Property ❑ Yes ®,No Check all that apply Wetlands Will Be Impacted ❑ Yes ® No Wetland Impacts Acres) Wetlands Delineation has been completed Yes El No ❑ Buffers Impacted Acre(s) USACOE Apporval of Delineation completed Yes ® No 404 Application in process w/USACOE ❑Yes ®No / Permit received from USACOEQYes ❑No 401 Application required Q Yes,L No If Yes ❑ Regular ❑ Express Additional fees not to exceed 50% of the original Express Review permit application fee may be charged for subsequent reviews due to the insufficiency of the permit applications For DENR use only SUBMITTAL DATES Fee Split for multiple permits SW $ CAMA $ LQS $ 401 $ Total Fee Amount $ JUL b3 2006 09 20A Tripp Engineering 9107635631 page 3 June 22 2006 Stormwater Narrative Durango Place Wilmington NC TE 06005 Durango Place is an existing vdcant 2 35 acre tract proposed as a multi family residential subdivision The Subdivision is compnscd of duplexes and will be desibned as high density and tmdted by wet detention Each pond will be designed to meet the State s 1 and the City s 10-year pre post requirement Outflow from the basin drams to Smith Creek classilicalion C Sw JUL 03 2006 09 20A Tripp Engineering 9107635631 page 4 _t emu►-c�� o �IaC�. nue FrankUn ma Randoll Avenue S�m Park N W E S I LOCATION MAP I NOT TO SCALE are,7yc3 P12CC INFILTRATION SITE VISIT REQUEST Name of the Project Lullwater Duplexes Location (attach a clear vicinity map) 222 Lullwater Drive, Wilmington, NC Street address SR number community etc Directions from the nearest major intersection +/ 1 mile northeast of intersection of Kerr Avenue and Randall Parkway Owner/Applicant Name Tommy Davis Construction, 6423 Hawksbill Drive, Wilmington, NC, 28409 Consultant Name Withers & Ravenel, Inc — Mark Hargrove Consultant Contact Information 256 9277, fax 256 2584, mhargrove@withersravenel com Phone fax email etc #1 #2 #3 #4 #5 #6 #7 #8 Existing ground elev @basin/trench= SHWT elev = rL b ) V / SHWT plus 2 (max bottom elev )= Date/Time of Soils Investigation A Summary/Comments All proposed infiltration areas and existing active utility lines located within the proposed basin/trench must be marked and flagged If these areas are not flagged the Soils Scientist reserves the right to decline to do the investigation If the proposed infiltration system will be located in an area of existing pavement and there is no open area nearby equipment capable of breaking through the impervious layer must be provided The soils investigation does not take the place of a soils report prepared by an appropriate professional The Soils Scientist will only verify the soil conditions that are reported in the Soils Report and make a determination as to the suitability of the site to meet the infiltration design requirements under NCAC 2H 1000 and assumes no liability should the system fail rF ZP Vineyard I nnte L L G 1 B 4176 675 1 ng MF L (SD) Lord use `lult Fo ly Res dent of 50 N Lullwater Drive. J x I w / (60 Public R/W) :,57 _-_____ / / /- I________________________________________49 ________________________________________ 517200'E 395.67___________________________________________49 \ L�ur'cn Circle- (Private) � r X I .e I CO N 2"100' W 9d , i i l 0 ' / / / / i e A, pIoAwN / A' -AA 'AD