Loading...
HomeMy WebLinkAboutSW8980504_Historical File_19990430 State of North Carolina A Department of Environment and Natural Resources • Wilmington Regional Officefr James B. Hunt, Jr., Governor IrItr1 C D EN R Wayne McDevitt, Secretary NORTH CAROLINA DEPARTMENT OF Division of Water Quality ENVIRONMENT AND NATURAL RESOURCES April 30, 1999 Ms. Betty Williamson,Mayor Town of Ocean Isle Beach 3 West Third Street Ocean Isle Beach,NC 28469 Subject: Permit No. SW8 980504 Modification 3rd and 4th Street Extension High Density Stormwater Project Brunswick County Dear Mayor Williamson: The Wilmington Regional Office received the Stormwater Management Permit Application for 3rd and 4th Street Extension on November 9, 1998, with final information on February 12, 1999. Staff review of the plans and specifications has determined that the project,as proposed,will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 980504 Modification dated April 30, 1999,for the construction of 3rd and 4th Street Extension. This permit shall be effective from the date of issuance until April 30, 2009, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty(30)days following receipt of this permit. This request must be in the form of a written petition,conforming to Chapter 150B of the North Carolina General Statutes,and filed with the Office of Administrative Hearings,P.O.Drawer 27447, Raleigh,NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions,or need additional information concerning this matter,please contact Linda Lewis,or me at(910) 395-3900. Sincerely, _ Rick Shiver Water Quality Regional Supervisor RSS/arl: S:\WQS\STORMWAT\PERMIT1980504.APR cc: Don Covil, P.E. Delaney Aycock,Brunswick County Inspections David Thomas,NCDOT Division 3-District 3 Engineer Linda Lewis Wilmington Regional Office Central Files 127 Cardinal Dr.Ext.,Wilmington,North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper State Stormwater Management Systems Permit No. SW8 980504 Modification 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 Town of Ocean Isle Beach - 3rd and 4th Street Extension Brunswick County FOR THE construction,operation and maintenance of roadside infiltration swales 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 April 30,2009 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described on page 3 of this permit,the Project Data Sheet.The stormwater control is a roadside infiltration swale system,and has been designed to handle the runoff from 79,720 square feet of impervious area. 3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 4. No more than 96 driveways, each a maximum of 16'wide, can be constructed within the right-of-way. 5. The swales are designed such that there is no discharge from the 1.5" storm. 6. No culverts are allowed within the swales. 2 State Stormwater Management Systems Permit No. SW8 980504 Modification DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Project Name: 3rd and 4th Street Extension Permit Number: SW8 980504 Modification Location: Brunswick County Applicant: Ms. Betty Williamson, Mayor Mailing Address: Town of Ocean Isle Beach 3 West Third Street Ocean Isle Beach,NC 28469 Application Date: November 9, 1998 Water Body Receiving Stormwater Runoff Eastern Channel (ICWW)(LBR 15-25) Classification of Water Body: "SA" If Class SA, chloride sampling results: n/a Swale dimensions: 14'wide,4.5:1 (H:V)side slopes, 1.5' deep minimum Total Impervious Surfaces,ftz: 79,720 Street,20' wide, ft2: 49,000 Driveways,ftz: 30,720 Offsite Area entering Pond, ft2: none, per Engineer Required Storage Volume,ft3: 9,744 Provided Storage Volume, ft3: 29,152 (Based on full build-out) 14,089(Based on no driveways) Type of Soil: Sand Expected Infiltration Rate: 20" per hour Seasonal High Water Table Elevation: 6 FMSL Expected drawdown Time: 3-6 hours 3 State Stormwater Management Systems Permit No. SW8 980504 Modification II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in it's 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 side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of the swales. 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. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit,the approved plans and specifications,and other supporting data. 6. 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 oti the Certification. 7. 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. 8. The permittee is responsible for verifying that the proposed built-upon area does not exceed the allowable built-upon area. This will be accomplished by restricting the driveway width for each lot to 16', by limiting the number of lots within the project area to 96, and by limiting the road width to 20' within a 60'right-of-way. 9. The runoff from all built-upon area on the project must be directed into the permitted stormwater control system. 10. 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. 11. The following items will require a modification to the permit: a. Any revision to the approved plans,regardless of size. b. Project name change. c. Transfer of ownership. d. Redesign or addition to the approved amount of built-upon area. e. Further subdivision of the project area. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 4 State Stormwater Management Systems Permit No. SW8 980504 Modification 12. The Director may determine that other revisions to the project should require a modification to the permit. 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 1. This permit is not transferable. In the event there is a desire for the facilities to change ownership,or there is a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality accompanied by an application fee,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. 2. 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. 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations,or ordinances which may be imposed by other government agencies(local,state,and federaL)which have jurisdiction. 4. 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 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. Permit issued this the 30th day of April, 1999. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION • Kerr. T. Stevens, Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 980504 Modification 5 State Stormwater Management Systems Permit No.SW8 980504 Modification 3rd and 4th Street Extension Stormwater Permit No. SW8 980504 Modification Brunswick County Engineer's Certification I, ,as a duly registered Professional Engineer 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. Noted deviations from approved plans and specification: SEAL Signature Registration Number Date 6 1-- ''':.:;.''''-'. .: .._ .... ... •-. r5e iVL ._. . ...�::....::.. '�:�^'--.ems �. a-- Date ieceived F _UP ad I P utiv�oe: l/-w-q y _ 4' 365,00 L 5r.'J7 gao50¢ /4OP 1 State of North Carolina RECEIVED[ Department of Environment and Natural Resources Division of Water Quality NOV 0 9 1998 STORMW ATER MANAGEMENT PERMIT APPLICATION F01/3 : This form Tray 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): Town of Ocean Isle Beach 2. P ipt Owner/Signing Official's name and title (the person who is legally responsible for the facility and its compliance): Betty S. Williamson, Mayor 3. Mailing Address for person listed in item 2 above: 3 West Third Street caw Ocean Isle Beach State: NC 28469 TelephoneNumb=f 910 1 579-2166 .-� 4. Project Name(subdivision,facility,or establishment name-should be consistent with project name on plans,spedfications,letters, operation and maintenance agreements,etc.): 3rd and 4th Street Extension 5. Location of Facility (street address): b r1 Strut ��. Ocean Isle Beach county: Brunswick 6. Directions to facility(from nearest major intersection): Take Ocean Tate Beach Causeway across Intracoastal Waterway and turn ricrht on 3rd. street- 7. T atrfnrdP- 11° 53' 17" Inrigitude 26° 40' 00" • of facility 8. Contact person who can answer questions about the facility: Name Alan C. Lewis Telephone Number. ( 910 ) 754-8029 IL PERMIT INFORMATION': 1. Specify whether project is (check one): New Renewal If Modification 2. If this application is being submitted as the result of a renewal or modification to an existing permit,list the existing pexmitrnumber S W R 980 S 0 4 and its issue date(if known). 9/21/9 R Form SWLJ-101 April 1998 Page I of 4 3. SiPe._ ,• the t�•pe of project: check one): Low Density Y High Density Redevelop General Permit Other -. Additional Project Requirements (check applicable blanks): C-��LA.Major , c Sedimentation/Erosion Control 404 Permit - - III. PROJECT INFORMATION I. In the space provided below, summari e how stormwater will be treated. Also attach a detailed narrative (one to two pages) dew-:^ing stormwater management for the project.. . Tnf i 1 tT•a tion into o roadside sstioic ccnstrac t=e' in deep sands. Change reguestecz1 from initial permit c-r rid i t ion in that maximum width of driveways will be 16 feet instead of 12 feet . Luwj 2. Stormwater runoff from this project drains to the €ast'-"r. C'awnnc-. Oro - ver basin. 3. To;a1 P ojert Area: 3.5 ac, acres 4. Project Built Upon Ar=.a: -3 �0, 54.7 . row many drainage bases does the project have? 1 .. 6. Complete the following information for each drainage basin. If there are more than two drainage basins in the project, attach an additional sheet with the information for each basin provided in the same format as below. . _-, y Prdina .. Dsas.. g_$asmh2. I. l BaSLrE���IIIE1I.Tc�LcZOSi""� w""•.:•;;-.�. • -:> -:e Rece_virg Stream Name I ► n1 C c i eceivinz Stream Class I Si I Drainage Basin Area I '�. . 1 � I Fxsrirtz Imvervious* Area I 0.00 ac. I P 000sed Imv2r rious.4.rea I,g 1 0 -. _ 1 a,c. `D'"`.e_ ,” °a Imue^.riots*Area (total) I - e'ci 54-.'7% gsa e��asu�T ::,=eTs�ous~,S-Eirrace:�.l�reaa 4 'n On-site Buildinzs I 0.00 a. q C On-site Streets • I 1•iZac-✓ (44eo00J I I . On-site Parkins j 0.00 ac. On-site Sidewalks �/ I 0.00 a ^ . � xi�^r or-site dr4vet-)r-1i f T - _�. ac rr 7o6) .�_. .., Off-site I 0.00 ac. 20/1,7 I Total: I Z= /.78 mac.. I E_ Im,erbious area is defined as the built upon area including, but not Iimited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. - . How was the off-site imperrious area listed above derived? N/A IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS Deed restrictions and protectve covenants are required to be recorded for all low density projects and all subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded. • Form SWTJ-101 April 1998 Page:of 4 By_your signature below,you certify that the recorded deed restrictions and protective covenants for this project shall include all the items required by the permit,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 daa4eted without concurrence front the State, and that they will be recorded prior to the sale of any lot. V. AGENT AUTHORIZATION _ _ • If you wish to designate submittal authority to another individual or firm so that they may provide information on your behalf,please complete this section: Designatedagent(individualorfimt): East Coast Fngi naari ng rnmranyr P_n_ MailingAddieE 4918 Main Street P.O. Box 2469 City: Shallotte State Nr Tp: 2 84 59 Phone ( 910 ) 754-8029 Fax ( 910 ) Mil-8049 VI. SUBMITTAL REQUIREMENTS This application package will not be accepted by the Division of Water Quality unless all of the applicable items are included with the submittal 1. Please indicate that you have provided the following required information by signing your initials in the space provided next to each item. Appli 's Initials • Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable Supplement Form(s)for each BMP(see Attachment A) • Permit application processing fee(see Attachment A) /.L • Two copies of plans and specifications including: • Detailed narrative description of storntwater treatment/management • Two copies of plans and specifications,including: -Development/Project name -.Engineer and firm ' :Legend -North arrow - Scale -Revision number&date -Mean high water line -Dimensioned property/project boundary -Location map with named streets or NCSR numbers -Original contours,proposed contours,spot elevations,finished floor elevations -Details of roads,parking,cul-de-sacs,sidewalks,and curb and gutter -Wetlands delineated,or a note on plays that none exist -Existing drainage(including off-site),drainage easements,pipe sizes,runoff calculations - Drainage basins delineated - Vegetated buffers (where required) VII. APPLICANTS CERTIFICATION I,(print or type name of person listed in General Information,item 2) Betty Williamson certify that the information included on this permit application form is correct, that the project will be constructed in conformance with the approved plans,that the deed restrictions in accordance with Attachment A of this form will be recorded witivall required permit conditions,and that to the best of my knowledge the proposed project complies with requirements of 15A NCAC 2H.1000. Span= '/3 ''-' ,� iiie-itfra Date: 11-4_qR Title Mayor Form SWU-101 April 1998 Page 3 of 4 ATTACHMENT A • i 1. Deed Restriction Language The following statements must be recorded for all low density projects and for all projects that involve the subdivision and selling of lots or outparcels: 1. No more than square feet of any Iot, including that portion of the right-of-way between the edge of pavement and the front Iot line, shall be covered by impervious structures including asphalt, gravel, concrete, brick, stone, slate or similar material but not including wood decking or the surface of swimming pools. This covenant is intended to insure continued compliance with the stormwater permit issued by the State of North Carolina. The covenant may not be changed or deleted without the consent of the State. 2. No one may fill in, pipe, or alter any roadside swale except as necessary to provide a minimum driveway crossing. NOTE: If lot sizes vary significantly, the owner/developer must provide art attachment listing each lot number, size and the allowable built-upon area for each lot. For commercial projects that have outparcels or future development the following statements must also be recorded: 3. The connection from the outparcel or future area into the stormwater system must be made into the forebay such that short-circuiting of the system does not occur. 4. All built-upon area from the outparcel or future development must be directed into the permitted stormwater control system. 5. Built-upon area in excess of the permitted amount will require a permit modification prior to construction. For curb outlet systems,the following statement in addition to items 1 and 2 above must be recorded: 6. No ore may pipe,fill in or alter any designated 100 foot long grassed swale used to meet the requirements of NCAC 2H .1008(g). 2. Supplement Forms The applicable supplement form(s) listed below must be submitted for each BMP specified for this project: Form SWU-102 Wet Detention Basin Supplement Form SWU-103 '''Infiltration Basin Supplement Form SWU-104 Low Density Supplement Form.SWU-105 Curb Outlet System Supplement Form SWU-106 Off-Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Nutrient Management Strategy Supplement 3. Permit Application Fees (check made payable to NCDENR and submitted to the appropriate Regional Office) Type of Permit New, Modification, or Timely Renewal Without Late Renewal Modification Low Density $225 n/a High Density $385 $225 Other $225 n/a Director's Certification $350 n/a General Permit $50 n/a Form SWTJ-101 April 1998 Page 4 of 4 T; RECEIVED East Coast � 7' Engineering Company, I .A.FEB I 2 1999 4918 M;in Street Fax: 910.754.8049 Consulting Engineers BY: •-- a • :ox 2469 Office: 910.754.8029 Shallotte,NC 28459 February 9, 1999 Ms. Linda Lewis Water Quality Section NC Department of Environment,Health and Natural Resources 127 Cardinal Drive Extension Wilmington,North Carolina 28405-3845 Re: Ocean Isle Beach 3rd and 4th Street Extension DWQ Permit No. SW8 980504 Modification Submittal of Additional Information Dear Ms. Lewis: In response to your February 1, 1999 letter to us relative to the subject project, we have: 1. Revised the built-upon area values on page 2 of the application to include driveways as well as the roadway; and, 2. Typed page 1 of the calculations to provide for ease of reading. Two copies of each of these documents are enclosed for your review and approval. Your attention to this matter is appreciated. Please contact us should you have any further questions or comments. Sincerely, r° ATER RM W CfVE FEB 121999 Alan . wis, Vice President Project Manager D E PRGJ# M Enclosures pc: Mr. Greg Taylor,Town of Ocean Isle Beach with application File: 98-0197 (Ocean Isle Beach 3rd&4th St.) OIB 3rd 4th Street Extension DMC 7/20/98 Revised Cal. per Linda L. 7/15/98 Ltr. Page Number 1 • Background Linda's 7/15/98 letter questioned the effect of future driveways on storage within the roadside swale. These claculations address the storage capacity with the maximum # of driveways in-place. Approach Boundary Conditions (to be imposed by Town Ordinance if necessary): - Minimum lot width = 50' - Maximum driveway width = 16'. Allow 18' for placement of headwalls. - No driveway culverts allowed (to promote storage upstream of driveways). - No driveway drainage outside of R/W shall drain to roadside swale. - Elevation of top of driveway within R/W shall be no lower than roadway centerline elevation less 0.5' (to provide at least 1.5' storage depth immediately upstream of driveway). Calculations Storage volume, V, available within the swale in front of an individual 50' lot can be calculated by: (See previous 5/26/98 calcs.) V = (4.5 dA2) (50' - 18') Where d = avg. depth of swale in front of lot d can be comnputed by (1.5 + (1.5 - 32S))/2 Where S = road grade in front of lot Therefore: V = (4.5) (.75 + .75 - 16S)^2 (32) = (144) (1.5 - 16S)^2 = 36,864 SA2 - 6912 S + 324 ototti e / STORMWATr, CR ''S21999 EAL _ FEB DEB - 9499 5/ gg D E ' ONE PRO.i#__ 11 111 G1 \\. State of North Carolina Department of Environment Al,11 ;11FAI,,7and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor Ittil C DE R N Wayne McDevitt, Secretary NORTH CAROLINA DEPARTMENT OF Division of Water Quality ENVIRONMENT AND NATURAL RESOURCES February 1, 1999 Mr. Don Covil, P.E. East Coast Engineering PO Box 2869 Shallotte, NC 28459 Subject: ACKNOWLEDGEMENT OF RECEIPT AND REQUEST FOR ADDITIONAL INFORMATION Stormwater Project No. SW8 980504 Modification 3rd & 4th Street Extension Brunswick County Dear Mr. Covil: The Wilmington Regional Office received a Stormwater Management Permit Application for 3rd & 4th Street Extension on November 30, 1998. 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 revise the proposed built-upon area on the application to account for the increased driveway widths. 2. I am unable to read page 1 of the revised calculations. Please send in a clean, readable copy. Please note that this request for additional information is in response to a preliminary review. The requested information should be received by this Office prior to March 1, 1999, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. The Division is allowed 90 days from the receipt of a completed application to issue the permit. If you have any questions concerning this matter please feel free to call me at (910) 395-3900. Sincerely, Adn.Otai P6" Ms. Linda Lewis Environmental Engineer RSS/arl: S:\WQS\STORMWAT\ADDINFO\980504.FEB cc: Linda Lewis Betty Williamson Central Files 127 Cardinal Dr.Ext.,Wilmington,North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper .- Ccx ' : So v 2 ) = 3Z 32- 1 2Fto c -F( i'f = �((52 c-F 1¢013 �� � = 50z- -0 - 2-F 23 3o3 0-P/ 1 - = 8 Co24 cE 3 -- Z¢goo c N ci bb = 50 2� 2(, 152- cf r . VOL v ,05f .00 9 Cr) tj T = 54,1 ' 15425 Yoi = ' 64, $4 ` Sq,23 33 g-43SCgc R14-4 c--F Paw. vol. C w/� CO A..)) Prc Area 24 SO` A Coo - ( en, expo = s.S7 2c ( z4.. Z4, 50 V 2c) 49 DOD = 1, 12 2c o(W - Zo' tc x IC,` Luide x 9(0 301`720 w76S 2C. I, z3ZSu iehf 5-. 15 3,3 ) p4 RECEIVED NOV 3 0 1998 L' East Coast 1Y. ir Engineering Company, P.A. r„ tre Fax: 910.754.8049 Consulting Engineers Post Office Box 2869 Office: 910.754.8029 Shallotte,NC 28459 Wednesday, November 25, 1998 Ms. Linda Lewis Water Quality Section NC Department of Environment,Health and Natural Resources 127 Cardinal Drive Extension Wilmington, North Carolina 28405-3845 Re: Ocean Isle Beach 3rd and 4th Street Extension DWQ Permit No. SW8 980504 Request for Modification Dear Ms. Lewis: Please find enclosed the following documents which constitute a request for modification of the existing stormwater permit for the subject project: 1. Two copies of revised stormwater plan Sheets 1 and 2; 2. One original and one copy of the Stormwater Management Application Form which has been revised(from the original application)to reflect the requested modification; 3. Two copies of revised stormwater calculations; and, 4. Check in the amount of $385 to cover the application fee for the modification of high density projects. Your attention to this matter is appreciated. Please contact us should you have any questions or concerns about this project. Sincerely, CP Man C. wis, Vice President Project Manager Donald M. Covil, P.E. Enclosures pc: Mr. Greg Taylor,Town of Ocean Isle Beach with plans and form File: 98-0197 (Ocean Isle Beach 3rd&4th St.) SUPPLEMENTARY CALCULATIONS AND NOTES ADDRESSING THE IMPACT OF FUTURE DRIVEWAY CONNECTIONS Ocean Isle Beach 3rd and 4th Street Extension Stormwater Management Plan ;TORMWATER 6-1 D E C E I V E NOV 3 01998 O. SEAL , It 3 Ag �tcxa 949911 PROD Wfr �evlred tf/20`6. ILO ✓ti laL7- 1 G twi.6 04.-i\.e.s . • East Coast Engineering Company,PA, Shallotte,North Carolina . J am;,, Vzo: - /Project Name Ors "� r '-s i,-, E �-'• Name and Date Sheet Title --ePv;r.i r": / Li---1.- 1_ -7/A•"/ '3 - Page Number i l9 0 I I I 1 i ! ��V�c�� If/�_ iG1-,I YIZJ h dC i i i j i iI I ! i l I f ;1-Al` 7/1 %cr s i - : -L'L ! J `1�./l+ lirrI 1 I 'SDI r)✓ I C� `� '- INI.®(r'•�(i 'aril C ' .1') - �tf Ra. !t�i1Fa t lr•! I; _ .�r1 ! L I I A�� kG- /M)l�y ' G._ Ya..e ,r J.,.._ (^.. 1 1_£14 X/ 4. ,r,._ �v4�f - I I I 1 I i 1 ! I ! I - I. I I I i I • • 111 I I 1l1I I I�,i l i I I I I II 1 It�I l i II JJ�� J) l ,{I'� i y,. 1..i� `Tr�.r P •/h� dsL' Lr.d ram..,. .•zY+�..�p_. irl :•..Lcr a•- --I ; `� I I [ I I , i I I 1 1 .I I ,�,h,R..�2 /L , 744 = 1so I t I 1 I I ... I •--I _I A/d Gh rJ dt G,--, l•-� e ,rJ�s.Y - A „,_,„.. =• 1,i.„... I, .,. .,..�� I rk•Al' I I I 1. 1 4 if ► Ge ,,,ry4. ; „ /i,, dt 1 - _I _ . ._A:_„.._ ...zir4. „,i 064.1___ :„_:4,1, g./,‘, 6( ..L ,i ,e,4- 1:010,1--tit.. ., vid7t.7,,, -1.4 ez c ' ',-A le ii,;,h_. le- li.-J7'-- 1 I Il ' i L : ;r4± i ;,L _, I i ' I 4IGa1 4 -}-ier; r I I I I .. i. 6 ; 3ld ram. V :14G cr ,-�.t `-, XI) -L ",., M'f .. ,s ... I _�y,(J✓f_Jt��•�• /A /1°Q.1-. 'Ht 4.e l!sJ r %i.. h/;'C r.` ". • f, .vi ,v_r (r- c:(5.9 0 r s Ie 1.^,.,. ..,. ,, ..Lw. 1_,.. .1 1-:. --�/ �e 7 S-4?.)(sD'- rT) r•/jh....t'i = Qt►..ry :14jP ''OT - Z.�• '� . 14, } it ',�' t. t..:n.,, 1,,.,y :r?a::.•I1.... t ... . -• ..6.i.' .w+..i` t . �a 1�+� .. ! `{0�T- .7 wT /O`er. j)T.. i ....._ . :-.A tit Y .y , �S i- Y Ili, yet,y}t {R!'�: F-�`k! `5 �•�� J�i �� Gf !�.. 1' 11 ab' j} . A .- _• ` ith ..�s.v;_ l.,: .4.. ill t . it.:;.ii. M 1.,.r .2.ww.... .. ii ,..... �i. j..... • F� .; �e la :Oki.' 3,;), f,Mii C,,�-Ly vF I%-g. C!c.. ►..LS D : :1"- t. . . • ',.., _ma ..., t.. '''''. -.1' II IA* II 2.0 4T IV 41(4..540*/ PI 444 iM14.1-Alilli SE AM ' - --e ' V ''' 4.-. . :f.., is "v #,�' 'r: y 3,1 1tt'7 �" '. CZ--� �. 1 �,. �I i •�.. =r x liz e k e .+ s r� ra:` i .�''.?-a 4:; �. �y* r "" t•� ' -yr 'a'4..-z .�r . �.�yzyy',e. �.,�t ,/I����., ���'� rr A .r se R'�� e'+�.,,.,r� •H. 3. � Ci��. �'Fy �� .v, as,' • , F East CoEngin+C-Engineering ' ' 5I,: . Z,: . S {i`- i. 'M p \ �5 FLU ''.Shall'otte.North Carolina '} • t' ' •"~ Project Name r •_,e;.__3.. --7. .--- ...j,:,,,'- E.---,__if-- Sheet Title 72,;-,---,i -..t -...._ ,_- - - Page Number - .,. 1 : 1 1 I ItRr=VLI j2 IV ii,./34 , i 1 i 1 ' vr-i, , D4.e ;11--;r 0-_,e,0.- 4i1-...< r--.4-ies::, r ,.... I I II 1 1 I I 1 I 1 ,I I I -.,,,t '1.,--7,_,',.141 Jr_/,I, ;L dp,,Li. -1 ,,.. .rt J AL , 1 • —r—h—T"--1 I ! 1 i 4- IT 1 -4 1.1 Er_Ad 44.•1 ETT-, ,,,,,,,,,;,cii Jeli.e...) L•t _r 17 ci.A,-....4.6 r....1- ,--1, =_,. 1-.1-, 4-,, • - III i ! '-f 1 1 • i . ; . I1 Ley_LL.I.AL____IL--.kilf-- e.,_ ,,.! ,1-,i _;z.-; `1-"iiy.-V--- 3',' :-:2 /14.- d-4 14 -'2;;-,!,'"°-"e-1-•'-4:-:i- II ! 1 i 1 1 : 1-ri.! • i 1-';- ..14e• „1 Z. 1 di -ii-1._ 1'7 L,-._11, ..___.._..___4 7_1——--.•:. - d.4 i -... ,., I.,: - ; . . : I ! • i ! 1 I I 1 I V-LIA • . . I I ' • 1 1 . -7 -15'1 '•o( I ;r:, ,i6, - , , , 1 i 1,1 ---7,,[4 .7,tz. 1,4: i I I I 1 g._÷..._ in.,t.L0 e4.0,2. oo t--6, I .1284 i I . i 7_1 3 1 cr- i I I 1 1 I 1 1 ' 1 1 1 1 • i 1 . 1 1 1 LLL S-6_, _9 Lank-) 1144-J3-7 do •'7, 1-N4 I C./1- i .1 I I I I 111111111 I 1 i • _____ 14.4-4.:---,_zr-1,8_0 orn_ L 3iCo i 4 I I •. : 1 I 1 . • I 1 1 ' I 2101144 '67:21e- ,•17" J. -521/ .._/74,.....ff.---4- .071- .,I•ra 4.,/e.-.1"._ fficit0I 1 • 1 1 .1 i I1-j I 1 I 1 1 ; 1 1 I I . I 2-5- C., - A-c/ —, !J-1,.._,wl.41 4 i i .--. al;to'tpt I;... f a 1 I 1 I _ 1 _ 1 1 I i ' I , ! it '71 11 ,,...,717 > ..70..1 •_Se; • I 1 1 1 I . I . I I •e-i -‘20rel R.-----1 ii-.11-1. t ec21—, _____ 11i East Coast Engineering Co.,P.A. Shallotte. North Carolina : .-- . .// s --t., _ ,._ ,. /-111 \ .:. L Z 0 i r4 C...) 0. Cs] 0 t‘ A CC CC b : .‹ •• ‘1 0 li. J.C4 -J • 14.1 j q 7.- 1 -.I - S'4 14 0 1. `C 1 I • :4 )‘'. )4 : i • i. \-4. -\-•,. IL 4 r ? 0 _„ ' -: • __.3.: "'N. `:.. 1 C.1 IV) )••• :11 . -.....- -... '.4 a 1 1= 1 ...14- Zil 1 : \-1 '...). . ;it._.! 0...• ' • 1. • •i St. ...:: .. ! it • - i >1 I li"-V 1 %. ti .11 ,i14 A ‘i ., • i 41 11,9! ' )1 AI - st c:3 r\d ..—Jiiiii . • C -. I --