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HomeMy WebLinkAboutSW7011002_CURRENT PERMIT_20020222STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW'%,6�0 DOC TYPE � CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE DOC DATE 49 6-06,/7�0�, YYYYMMDD Wa:Rn Michael F. Easley Governor William G. Ross Jr„ Secretary Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D., Acting Director Division of Water Quality DIVISION OF WATER QUALITY February 22, 2002 Shore Flyte Marina Attn: Mr. Tony Wooddise 168 Hwy 158 West Camden, NC 27921 Subject: Stormwater Permit No. SW7011002 Shore Flyte Marina High Density Stormwater Project Perquimans County Dear Mr. Wooddise: This office received your completed stormwater application on February 21, 2002. After reviewing your application and supporting information it has been 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., SW7011002 dated February 22, 2002 to Shore Flyte Marina. This permit replaces. SW7990807, and shall be effective from the date of issuance until February 22, 2012, 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 lirnitatioris 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 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. 943 Washington Square Mall Washington, NC 27889 252-946-6481 (Telephone) 252-946-9215 (Fax) Shore F'lyte Marina February 22, 2002 Page Two If you have any questions, or need additional information concerning this matter, please contact Bill Moore at (252) 946- 6481, extension 264. Sincerely, ,h-Jim Mulligan Water Quality Regional Supervisor Washington Regional Office cc: McKim & Creed -'Elizabeth City, NC Perquimans County Inspections Washington Regional Office Central Files State Stormwater Management Systems Permit No. SW7011002 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 1.43, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Shore Flyte Marina Perquimans County FOR THE construction, operation and maintenance of stormwater management systems 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 for (2)infiltration systems to serve Shore Flyte Marina located at Hertford, NC. This permit replaces SW7990807, and shall be effective from the date of issuance until February 22, 2002, 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 4 of this permit, the Project Data Sheet. 3. Approved plans and specifications for this project are incorporated by reference and are 'enforceable parts of the permit. 3 DIVISION OF WATER QUALITY PROJECT DATA Project Name: Permit Number: Location: Applicant: Mailing Address: Application Date: Water Body Receiving Stormwater Runoff: Classification of Water Body: Total. Site Area: Total Impervious Surfaces Allowed: Pond/Basin Depth: Required Surface Area (SA/DA): Provided Surface Area: Required Storage Volume: (based on 1.0-inch) Provided Storage Volume: Controlling Orifice: Shore Flyte Marina SW7011002 Perquimans County Mr. Tony Wooddise 168 Hwy 158 West Camden, NC 27921 10/01/2001; original 02/21/2002; complete Perquimans River Sc 9.9 acres 2.9 acres 1.0 ft - Basin 1 1.0 ft - Basin 2 N/A 8126 sf - Basin 1 4088 sf - Basin 2 8467 cf - Basin 1 2131 cf - Basin 2 8753 cf - Basin 1 5275 cf - Basin 2 5.0 ft - Basin 1 Bypass Structure 12.5 ft - Basin 2 Overflow Swale 4 4. No homeowner/lot owner/developer shall be allowed to fill in, alter, or pipe any vegetative practices (such as swales) shown on the approved plans as part of the stormwater management system without submitting a revision to the permit and receiving approval from the Division. 5. 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. Change of ownership, d. Redesign or addition to the approved amount of built -upon area e. Further subdivision of the project area. In addition, the Director may determine that other revisions to the project should require a modification to the permit. 6. 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. II. SCHEDULE OF COMPLIANCE 1. The permittee will comply with the following schedule for construction and maintenance of the stormwater management system. a. 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 surfaces except roads. b. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 2. The facilities must be properly maintained and operated at all times. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency including, but not limited to: 5 a. Semi-annual 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 outlet structure, orifice device and catch basins and piping. 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. S. 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 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. Mail the Certification to the Washington Regional Office, 943 Washington Square Mall, Washington, North Carolina, 27889, attention Division of Water Quality. 7. A copy of the approved plans and specifications shall be maintained on file by the-Permittee for a minimum of five years from the date of the completion of construction. 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 143-215.6(a) to 143-215.6(c). 1.1 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 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 22 nd day of February, 2002. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION ,�---Gregory J. Thorpe, Ph.D., Acting Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW7011002 7 Shore Flyte Marina Hertford, NC Stormwater Permit,No. SW7011002 Designer'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, for (Project) (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. Signature Registration Number Date X i Permit No (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division -of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form may be pbotocopied for use as an original DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes a stormwater management permit application, an infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details. 1. PROJECT" INFORMATION Project Name : Si�cze. _FL-�rE- Miar-II,3A Contact Person: KazwsLL I utr=NPs7e- Phone Number: (ZSZ) 330" Z9Z9 1 This workshect applies to: Basin No. Z in Drainage Area z (as identified on plans) (from ror•rir SIYU-!U!) 1I. DESIGN INFORMATION - Attach supporting calculations/documentation. The soils report must be based upon an actual field investigation and soil borings. County soil snaps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Soils Report Summary Soil Type Infiltration Rate SHWT Elevation Basin Design Parameters Design Stonn G Design Volume A.-O Drawdown Time Basin Dimensions Basin Size Basin Volume Provided Basin Elevations Bottom Elevation Storage Elevation Top Elevation 1p CON ETOE !n/h or cf/hr/ (circle appropriate units) ' i fnlsl (Seers to fi = {rajlerr T le 'le5�/ nS {� n V inch (f.5 inch event for SA wulers, l inch event for others) 01 zJ-31 c.f. days Y 159 ft. x Z •—% ft. = 8 -- sq. ft. (bolioni dimensions) E 1 •S 0 fins] I Z-Z5 finsl 12.7S fins] Dorm 5WU-103 Rev 3.99 Page l of 3 111. REQUIRED ITEMS CHECKLIST The following checklist- outlines design requirements per the Stormwater Best Management. Practices Manual (N.C. Department of Environment, I-lealth and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 21-1 .1008. Initial in the space provided to indicate that the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. Attach justification if a requirement has not been met. Applicants Initials a. System is located 50 feet from class SA waters and 30 feet from other surface waters. I b. System is located at least 100 feet from water supply wells, 1 c. Bottom of system is at least 2 feet above the seasonal high water table. 1 d. Bottom of the system is 3 lect above any bedrock or impervious soil horizon. 1 e. System is not sitcd on or in fill material or DWQ approval has been obtained. f. System is located in a recorded drainage easement for the purposes of operation and f maintenance and has recorded access easements to the nearest public right-of-way. r�� g. Drainage area for the device is less than 5 acres. h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is attached. 1L 1 i. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event for areas draining to SA waters ). Design volume and infiltration calculations attached. System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage. Calculations attached. k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (]-I:V). N 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed Swale or sediment trap is provided. KIT in. Bottom of the device is covered with a layer of clean sand to an average depth of inches or dense vegetative cover is provided. n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimum length is 50 feet for SA waters, 30 feet for other waters). o. Flow distribution mechanism within the basin is provided. p. A benchmark is provided to determine the sediment accumulation in the pretreatment device. S Ez< PLAK) q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided). K-F r. System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days. A soils report and all pertinent draw -down calculations are attached. KIT _ s. Plans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized. Form SWU-to3 Rev 3.99 Page 2 of 3 IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT 1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash accumulation, vegetative cover, and general condition. 2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated cover to maintain a maximum height of'six inches, and remove trash as needed. I After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow structures for blockage and deterioration. Remove any blockage and repair the structure to approved design specifications. 4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the original design depth without over -excavating. Over -excavating may cause the required water table separation to be reduced and may compromise the ability of the system to perform as designed. Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.). A benchmark shall be established in the pretreatment unit. The benchmark will doCtmlerrt the original design depth so that accurate sediment accumulation readings can be taken. The measuring device used to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the design depth reads __Lo feet in the pretreatment unit, the sediment shall be removed from both the pretreatment unit and the infiltration basin. 5. If the Division determines that the system is failing, the system will immediately be repaired to original design specifications. 1 f the system cannot be repaired to perform its design function, other stormwater control devices as allowed by NCAC 21-1 .1000 must be designed, approved and constructed. I acknowledge and agree by my signature below that 1 am responsible for the performance of the five maintenance procedures listed above. I agree to notify DWQ of any problems with the systern or prior to any changes to the system or responsible. party. Print Name and Title:_ _T�NY OoDD 5SI< CWNEiZ Address: 1(_0 b H W Y 15 �2) Inl F ST p F 27 9 2 i Phone: 33 8 - 7 7 7-4 Date:�9 Signature: ]Vote: The legally res])onsible party should not be a homeowners association unless more than 50% of the lots huve been sold and a resident of the subdivision has been named the president. �� f �� /}�yot. ?Q� a Notary Public for the State of , County of ern-rlrls do hereby certify that l personally appeared before me this day of : t 000l , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official seal, Sh,wL My commission expires ! Form SWti-1,03 Rev 3.99 Page 3 of 3 a rn r i M��clri�'. f;,a?r . �..yx��:ias��?'� 3 � .��,s,�;% ��`�:.�;_� �r©F,I'1Cf.�U51 ONLY �,���._�L�r.,:���_�?�� ��.����,.,�3..r�::�..�.,:�� .�i' �s�•.�`� Date Received Fee Paid Permit Number ' OCT 1 2001 �Fr� awe L►�aR� State of North Carolina DepaYffient of Eriviromnew and Natural Resources (� Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM � �j l^ 1 77iis form may be photocopied for use as an original J s r`' D I. GENETAL INFORMATION 1. Applicants �name �(specify [lie nauee of [lie corporation, individual, etc. who owns the project): 2. Print Owrter/Signing Official's name and title (person legally responsible for facility and cot upliaiice): 3. Mailing Address for person listed in item 2 above: WC�-� City —CA- Ml.pE State; N C— Zip: 279.-1 Telepliorte Number: Z5 Z,� 3 �� Z4 4. Project Name (subdivision, Facility, or establishment name - should be consistent with project name oil plans, specifications, letters, operation and maintenance agreements, etc.): 5. Location of Project (street address): City: ep--r O 1) County: PIE P--- (P—U% T''itarl�3S 6. I)irectioris to project (from nearest major intersection): _1_l�Ay 9" — Nd-� f3o u� P o NJ US 1�7 1 U �rJ � l G HT o r 3 S R l 3�b � ti Eto N�1 oE lZ. mAk � IUF . 7. Latitude: ' (0 1 O C Longitude: 7G, Z% Z.O _ of project 8. Contact person who can answer questions about [he project: Nante:_� �ALL 1 U Ei�tJ Telephone Number: { Z52 mc.K l mi- G am ❑ I1. 1"ERMIT INFORMATION: 1. Specify whether project is (check one): New renewal Modification � � moo, 47G +$"S Form SWU-101 Version3.99 Page 1 of 31s / ht!° hQs AO AY06�r;,� ,.r/ .te sc,"cl.;�f sW 7W 0Bo 7 2. If this application is being submitted as the result of a renewal or modification to an existing permit., list the existing permit number SW 7gq_a&Q7 and its issue elate (if known)_Sl 3_'[jO 3. Specify the type of project (check one): Low Density X FI1gh Density Redevelop General Permit Other 4, Additional Project Requir�emenls (check applicable blanks): ✓EAMA Major /Sedimentation/Erosion Control 404/401 Permit -"�NPDES SIOrInWater' Information on required state permits can be obtained by contacting the Customer Service Center at. 1-877-623-6748. M. PROJECTINFORMATION 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-\LL P-OOF Dlz&.&3A_GF To_r �r1z�cT�c� 2. Stormwater runoff from this project drains to the lv S River basin. 3. Total Project Area: 1. g E acres 5. How many drainage areas does the project have? Z-. 4. Project Built Upon Area: Z6 • 99 % 6. Complete the following iufurrnation 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. Basra lnfolmatlon r ,Drainage F1rea 1 `h s r# �a Y'�Dralna erAiea 2 Receiving Stream Name PELZROINMIL � 5 Receiving Stream Class SG. SC_ Drainage Area A,71c_zZ� z . O Existing Impervious* Area 0 0 Proposed Impervious`Area Z. 33 • SA % Impervious* Area (total) 49._5 a/ 1PgIVIOUs.-v;Slllfcice_Area. tlq,AIIF.Y,r=r ,� r DItill ageAi,edtlwl ..'.'. ' sb,ek!,�r�`t�` 4iFDId1f18gf,ACec12i P°c'i'.r�,,. On -site Buildings j 4, S -r " X 7. 0 On -site Streets VEL On -site Parking (t"ESP L . C) On -site Sidewalks Other on -site Off -site Total: Total: lurpe!'vious area is defined as the built upon area including, but not liniiied to, buildings, roads, parkin; arras, sidewalks, gravel areas, etc:. Forst SWU-101 Version 3.99 Page 2 of 4 Z • 87 7. How wits the off -site impervious area listed above derived? IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS The 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. 1. The following covenants arc intended to ensure ongoing compliance with state stornrwater marragerrrent permit number as issued by the Division of Water Quality. These covenants may not be changed or deleted without lire consent of the State. 2. No more than square feet of my lot shall be covered by structures or impervious materials. Impervious materials include asphall, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or (lie water surface of swimming pools. 3. S'wales shall not be filled in, piped, or altered except as necessary to provide driveway crossings. 4, Built -upon area in excess of (he permitted amount requires a stale stor•rnwalcr' rrianagerrrerat permit modification prior to Construction, 5. All permmtled runoff from outparcels or future development shall be directed into the permitted storm watel* control system. 77rese connections tothe stormwater control system shall be performed in a manner (hat maintains the integrity and performance of the system as permitted. 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 he 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 forrn(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Fort SWU-102 Wet Detention Basin Supplement Form SWU-I03 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 "french Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement. Form SWU-101 Version 199 Page 3 of 4 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 iterns 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. Initials • Original and one copy of the Stormwater Management Permit Application Form ___N ffF • One copy of the applicable Supplement Forni(s) for each BMP mHF • Permit application processing fee of $420 (payable to NCDI;NR) ml+1:'- • Detailed narrative description of stormwater treatment/management �yjkF • 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 snap with named streets or NCSR numbers Original contours, proposed contours, spot elevations, finished floor elevations Details or 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):_��.Np�L'L�U�N�4C�_]yiG��1 �" Mailing Address:O� E • ��� S�T • ��L State:_NC, Zip:� Z.796q Plione: ( Z_55Z 338- 2-9 Z9 Fax: L1 U-7 VIII. APPLICANT'S CERTIFICATION I, (print or type dame of person listed in General Information, item 2) l a y Moo I'ssa 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 15A NCAC 21-1 .1000, Signature: Form SWU-101 Version 3.99 Page 4 of 4 Date:_O 4�?- - 2- , >s7� , _ 0,2/21I2002 17115 2523391117 MCKIM AND CREED PAGE 01 504 East Elizabeth Street Suite 1 Elizabeth City, North Carolina 27909 TEL (252) 338-2929 FAX: (252) 338-1117 FACSIMILE TRANSMITTAL�s� RECIPIENT: �y �{ FAX NO: 716 COMPANY: C DATE: Z o� SENDER: L4aL( TIME: NUMBER OF I RANSMISSION PAGES (including this page): r PROJECT NV BER 0 /-S- ` 0 as 3 E a rCG�,�yrd j'1 a r ".,_'".,_°� PROJECT NA THIS IS YOUR ORIGINAL [] HARD COPY TO FOLLOW COMMENTS: 'IF NOT CORRECTLY RECEIVED OR PAGES FAULTY, PLEASE rALL.SENDERAT(252) 338-2929 " REMARKS: ATTENTION T14L, INFOANWTION CON INEQ IN THIS FACSIMILE MESSAGE 13 PRIVILEGED AND CONFIDENTIAL INFORMATION INTENOEO ONLY FOR THE USE OF THE INDMOCIAL OR ENTITY NAMED I59OVt=. If THE FADER OF 11113 ME89AGE IS NOT THEfNTE1YDt=0 REGIPIEIIT. OR TF1E EMPLOYEE OFIOR AGENT flE9P014519LE T4 Uf11VER IT Tp THE INTENDED RECIPIENT, VOU AR6 HE fsBV NOTIFIED THAT ANV OIBBEMINATION, 01BTR1gUTION OR COPYING DF THIS COMMUNICATION Ib STRICTLY PROHIBITED. IF YOU NAVE RECEIVED TH1$ 4 4OMMUN14 aAroiJ w ER' h, PLEASE P49TIFY V5 UY TELEPNQNE AND RETURN THE QQIGII+AL M9,55AGE TO 0 AT T11E APOVE AQDAESS Va THE V S POSTAL SERVICE WE WLLREIM45VRBC YOU F ANY COSTS INCURRED. VANEWFAX.DOC I REV, -05M97 02/21/2002 171 15 2523381117 MCKIM AND CREED PAGE 02 Pert it No. (to be provided by DWO State of North Cayolltla Department of Envifonment and Natural Resources Divis ton of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This fotn;;nay be photocopied for use as an original A complet stormwater Management plan submittal iwcludes a stormwater management permit application, an infiltration asin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details, I, Project N Contact F This INVORMATION Mp�lzl1JA u: E Phone Number' (ZaZ ) applies to, Basin No. Z _ in Drainage Area Z �(ar 1da-lifed on pldA4) {from Form SWU 101) H. 13K, SIGY INFORMATION - Attach supporting calculaduns/docurnentation, The soils report Mast be basef upon an actual held investigation and soil bgxiogs- County soil maps are not an acceptable source 9f sc#ls information. All elevations shall be hi feet %mean, sea level (Tmsl), Soils Repcir Summary Soi I Type Infiltration l,ate SHWT P-lev ition Basin Desig i Psirometers Design Sto Design VQlu,,ne Drawdowia Ime Basin Dime aions Basin Size Basin Volu Provided GoN e-Toe in/ or cf/hr/sf (circle appropriate units) finsl (Seasonal High Water Table eieva ion) illeh (1:5 inch event jar SA waters, 1 inch event for others) days Y 51 sq_ ft. (bottom diTentions), Basin Eleval Ions Uottorn Elev Lion find �p Err preft Storage ,Elev ktiou 12. SD _.� frnsl Z.rZ 1�O I. Top Elevatiei- 1 Z • 7 � find Farm S Wu-104 Rev 3.99 i'ago I of 3 02/21/2002 17 15 25233B1117 MCKIM AND CREED PAGE 03 HL RE, QVIREU ITEMS CHEOCLIST The Follo" Itag checklist outlines dcsign regiairenients per the Storrnwater Best Management Practices Manual (N.C. Dep rtment of Environment, Health and Natural Resources, February 1999) acid Administrative Code Section. I A►. NCAC 2H -I008. Initial in t'space ,provided to itadlcate that the following design requirements have been met and supporting docuinema on is attached. If the applicant has designated an agent in the Stormwater Managew-nt .Permit Applicatio4 lrorm, the agent may initial below. Attach justiflestipn if a requirement has not been met. Appticant4initials 45 a. System is located 50 feet from class SA waters atid 30 feet from other surface waters. b, Systern is located at least 100 feet from water supply wells. c. Boltorn of system is at least 2 feet above the seasonal high water table. r--F d. Bottom of the system is 3 feet above any bedrock or irtipervious soil horizon. 1 e- System is not sited on or in f1d material or DWQ approval has been obtained. f. System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public right -of -way - 'IF _ g. Drainage area for the device is less than 5 acres. h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is attached: i. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event for areas draining to SA waters ). Design volume and infiltration calculations attached. System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage. Calculations attached. _ k. A0 aide slopes stabilized with vegetated cover are no steeper than 3:1 (H;V). 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed $wale or 3cdiment trap is provided, iti. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or dense vegetative cover is provided. n. Vegetated filter is provided for overflow and detail is shown on plans (Required ii inj num length is 50 feet for SA waters, 30 feet for other waters). o. Flow distribution mechanism within the basin is provided. p. A benchmark is provided to determine the sediment accumulation in the pretreatment device. q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided). r. System is designed to draw down the design storage voltune to the proposed bottom elevation under seasonal high water conditions within five days, A soils report and all pertinent draw -down calculations are attaclied. s. Plans ensure that the installed system will ineet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized. corm $WU-103 Pov 3.99 Page 2 of 3 02/21/2002 17115 2523381117 MCKIM AND CREED PAGE 04 IV, INikLTRATION'DASI N OPERATION AND MAINTENANCE AGREEMENT 1. After a cry runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash a cumulation, vegetative cover, and general condition- 2. Repair roded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegeta d cover to maintain it maximum height of six incites, and remove trash as needed. 3. Enter a ery runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow sLructui as for blockage and deterioration- Remove any blockage and repair the structure to approved design specific ations. 4. Remov accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the etreatment unit is reduced to 75% of the original design depth. The system shall be zestored to the origin design depth without over-cxcavating, Over -excavating may cause the required water table separat n to be reduced and may comproimise the ability of the system to perform as designed. Removed sedim t shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversej; impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.). A bencl mark shall be established in the pretreatment unit. The: benchmark will document the original design i epth so that accurate sediment accumulation readings can be taken. The measuring device used to determ; ie the depth at the benchmark shall be such that it will give an accuzate depth reading and not rcadily enetrate into accumulated sediments, When a design depth reads _ feet in the pretreatment unit, the sediment shall be removt front both the pretreatment unit and the infiltration basin. 5. if the D ision determines that the system is failing, the system will iinmediately be repaired to original design 5 ecifications. If the system cannot be repaired to perform its design function, other stormwater control etvices as allowed by NCAC 2H ,1000 must be designed, approved and constructed. l ackirowled a and agree by my signature below that 1 atn responsible for the performance of the live ntaintenaAce rocedures listed above. I agree try ,notify DWQ of any problems with the system or prior to any changes to system or reTsponsible. party. Print Name d Title;16 Y n 0 b-- Address; w Y Phone:_ 7 � 7� Date: M Signature:eggs.�7 �tara�a•�r�� ._ IVOiC, The leg illy reyponsibie party should not he u hameorners association unless more than 50% of the tars have been sold and a residen of the aubdivtslorr has been named ,he pri.;$rtlenL A. fil"'}10J a Notary public f r ttie State of ,Countyof rA, ri 16 , 44 hereby certify d4c ii f personally appeared before me thjrl� day of , and ack�tOwledge H►e due execution of the forgoing irrfiltratiQn basin mainletiance requirements. Witness my li=4 and vflicial seal, 5L3r,,L ror,ti SWU-1o3 zev 3-99 r1 �� My coin Mimi on expires 1.1 1't7—' .rJ� L,,,,.` Page 3 of 3 Ln m <1 a 3' HAN I AP PARKING N. T.S. N C] w w " U x Z ( i 2: H_D.P.E. ~ *A DI 02) 77 m IL t~ IR N g co a rn 11 C14 CW Ir1 �Q V4 o Ln r- a� V4 4 m m C4 8 lV _m 0. 24' H.p.P.E. (BY-PASS) X 18' WO-P.E. (TO BASIN) 12' DIP WN THi MECHANICAL JOINT 4PLAN - -4" CONCRE TE COVER RIM = 4,:50' —f 24' H.D.P.E. BYPASS a INV. OUT= 5.00' (FROM 01 J2) INV. IN .6.53' 15' H_O_P.E_ (TO BASIN) 5EcnoN x-x INV. OUT=4.13' JUNCTION BOX wr.s. NO COVER STO, 840.54 R. MIN, GENERAL JIQTES, 1. MORTAR JOINTS SHOULD 8E BETWEEN 3/8" AND 5/8' THICK. 2. ALL CONCRETE TO BE 3600 P.S1 COMPRESSIVE STRENGTH_ 3. THE 6' OPENING SHOW4 MAY BE INCREASED TO E" MAX. IF DEEDED TO BE- NECESSARr BY THE ENGINEER. 4. ALL CATCH 9ASIN OVER V-6" IN DEPTH SHALL BE PROOOE❑ TOOTH STEPS V-2' ON CENTERS. STEPS SHALL B-E IN ACCORDANCE OATH KCDOT STD. 840.68 5_ CONCRETE BRICK MAY BE USED IN LIEU OF HARD C011M{IN CLAY BRICK. 6. JUMBO BRICK 1A4LL BE PERUITTED. 7_ FOR IF-0" IN HEIGHT DR LESS USE B" WALL. OVER 6'-D" IN HEIGHT USE 12" ONALi 10 **-0" FROM TOP OF WALL, AND W WALL FOR THE REWAINING 5'-0". 8. ALL EXPOSED JOINTS VdLL BE CONCAVE TOOLED. 9. ALL PIPE. IN STORM DRAIN STRUCTURE SHALL BE STRUCK EVEN WITH 1HE INSIDE WokLL, GROUTED AND BRUSHED SHDOTH. 10. REFER TO NCDOT STD. S<4.54 FOR COVER UEFAFL. 11. WEEP HOLES SHALL BE PLACED IN BACK WALL WI:H FILTER FABRIC OR STONE ON BACK SIDE. 12. THIS CATCH BASIN IS MDT TO BE USED WITHIN STREET RIGHT OF VAY UNLESS OTHERNK APPROVED BY CITY/COUNTY ENGINEER, DIAIEN%DNS OF REINFORONC COVER BOY AND PIPE DIMENSION PIPE SPAR 'MOTH HEICHT BARS - X BARS - Y OTAL D A B H(MIN.) NO. LENGTH NO. LENGTH LBS. F G 24' 4'-0" 2'-9" 3'-5" 2 3'-4" 8 1 5'-1" 33 02/21/2002 17: 5 2523381117 MCKIM AND CREED PAGE 06 • I I J I, � j' •I' k y � N k IV I •1•• � I I � � � •1 E O 1 � ••� A I•I � � mLn ����gmi i m I i u ;cz a o?Li ego 6a upkq�/t �iq"' I I I 1LOF u LA I I s m in (M/a .o) aeoa a3sodoac • I � Ifo �I, a ti tn N m m N N N TATIVE COVER 13.0' SLOPE SLOPE 1 i.5' 1 STORM WATER BASIN #2 CROSS SECTION NO M SCALE VEGETATIVE COVER 12.5' 02/21/2002 17:�5 2523381117 MCKIM AND CREED PAGE 08 A cemplete infiltration showing ail I. Permit No_ (to be provided by DWQJ State of Nortb Carolina Department of Envi,c9nment and Natural. Resources Divislon cif Water Quality S TORMWA'TER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form may be photocepled for use as an original water management plan subinittal includes a stormwater management permit application, an supplement for each systeFn, desigtj calculations, soils report and plans and specifications water conveyancer and system details, INFORMATION project Name a u-cm MAzio Co,ulact Persv UAA,OF _ Phone Number': (ZSZ. ) a3 S - Z9Zq This workshee applies to: Basin No. in Drainage Area -— (ar identified urr ptaers) (from Forst SWU-1OR It. DESIGN I� Q4�1v.MATION - Attach Supporting calculations/documentation. The soils report must be hosed on axle actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Soils Report utntnary Soil Type FIPJFa Infiltration Ra rt 0 _ or cf/l1r/sf (circle appropriate units) SHWT krleVatt n 9,0 fmS1 (Seasonal High WaLar Table elevation) Basin Design arain,eters i Design Storm + . Inch (1.5 inch event for SA walera, 1 inch evunf fur Wher3) Design VQlurn Drawdown Ti e 0. n9 days Basin Ditnem Basin Size Basin Volume Basin Elevado Bottom F.levati Stoxage .i levati 'I'vp Elevation ft. J Z(sq. ft. (bottom dimenstow) V A. D fmsl $ find fmsl Faan SWU-103 j Rev 3.99 Page I of 3 0212112002 17115 2523381117 MCKIM AND CREED PACE 09 .i[;<. RJEQU1 ED ITEMS Q1ECYLxST The followlll checklist out -tines design requilemeiits per the Storinwater Best Management practice,$ Manual (N.C. Depart ent of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H .1008. Fttitial in die pace provided to indicate that the following design requirements have been met and supporting dgcumentdtiotrm, is attached. if the applicaltt has designated an agent in the Stormwater Management Permit Application F the agent may initial below. Attach justification if a requirement has not been met. Applicants Iljitials ,T a. Systcm is located 50 feet from class SA waters and 30 feet from other surface waters_ b. System is located at least 100 feet from water supply wells. c. BQtLQtii of systerrl is at least 2 feet above the seasonal high water table. d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon. e. System is not sited on or in fill material or DWQ approval has been obtained. f. System is located in a recorded drainage easement for the purposes of operation and inaintcaanca and has recorded access easements to the nearest public right-of-way. �T g. Drainage area for the device is less than 5 acres_ h_ Soils have a minimum hydraulic conductivity Qf 0.52 Wche$ per hour and soils report is attached. i. Systern captures and infiltrates the -runoff from the first L0 inch of rainfall (1.5 inch event for areas draining to SA waters ). Design volume and infiltration calculations attached. j. System is sued to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage: Qalculations attached. f� t k. All side slopes stabilized with vegetated cover are no steeper thaia 3:1 (H:V). 'T 1. A pretreatment device such as a catch basin, grease trap, flltcr strip, grassed Swale or sediment trap is provided_ �yi m. Hottoin of the device is covered with a layer of clean sand to an average depth; of 4 inchcs or dense vegetative cover is provided. n_ Vegetated filter is provided for overflow and detail is shown on plans (Required minimum length is 50 feet for SA waters, 30 feet for other waters). o. Plow distribution inechanisni within the basin is provided, p. A benchmark is provided to deteeinine the sediment accumulation in the pretreatment device. q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided). r. 5ysLem is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water coaditions witlljn bve days. A soils report and all pertinent draw-dowi) calculations are attached. 1 _ s. flans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized. Form SWIJ-1031 Rev 3.99 Page 2 Cr 3 02121/2002 17 15 2523381117 MCKIM AND CREED PAGE 10 IV.. INFIL TRATION BASIN OPERATION AND MAINTENANCE AGREEMENT 1. After eve y runogproducitig rainfall event and at least mgrithly inspect the tttfiltlation system for -erosion, trash acci nulation, vegetative cover, and gene Kai. condition. 2. Repair er ded areas immediately, re -Seed a$ Becessary to mai..ntaW adequate vegetative cover, mow vegetate cover to maintain a maximurn height of six inches, and remove trash as needed. 3. Ater eve#y runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow st.ruct=4 for blockage and deterioration_ Remove any blockage and repair the structure to approved design specilical 4. Kemove • ccumulated sediment from the pretreatment system and infiltration basin annually or when depth in the pre reatment unit is reduced to 75% of the original design depth. The system shall be restored to the original dAign. depth without over -excavating. Over -excavating may cause the required water table separatiod to be reduced and may compromise the ability of the system to perform as designed. Removed sediment Phall be disposed of in an appropriate Wanner and shall not be handled in a manner that will adversely wapact water quality (i.e_ stockpiling near a stonnwater treatment device or stream, etc.). A berichr iark shall be established in the pretreatment unit. The benchmark will document the original design dc pthso that accurate sediment accumulation readings can be taken. The measuring device used to determini the depth at the benchmark shall be such that it will give an accurate depth reading and not readily P etrate into accumulated sediments_ When th design depth reads �` feet. in the pretreatment unit, the sediment shall be removed rom both the pretreatment unit and the infiltration basin. 5. If the Di sion determines that the system is failing, the system will immediately be repaired to original design sp ciftcations. if the system cat.not be repaired to perform its design function, other stormwater control d ices as allowed by NCAC 2k1.1000 .must be designed, approved and constructed. I acknowledg and agree by my signature below that i am rdsponsible for the performance of the five maintenance ocedures listed above. J agree to notMlfy .DWQ of any problems with the system or prior to any changes to th system or responsible, party. Print Nalnc at f Title: f O ('� D �} 1IS E I*,S e- 4, Address: Phone:_L Signature: Note: The day of Witness my SEA-1 "`7-74A r Dste: �28.�81 respons[ble par[y should nos be a hpmeowners association unless more than 50% pflhe tors have been sold and a [he subdivLsion has been nanted thepresident. I xj ll�fV , a Notary Public.,, for,,__t)h��er/State oF�Y�31`>t` LLtf���> Coui►ly t1F L_ , do hereby certify that's t X&j( F personal ly appeared before ine this ou and acknowledge the duo execution of the forgoing infiltration basin maintenance requirements. Umcial seal, My comini55ion expires_.,�� i%orro SWU-103 l Rev 3.99 Page 3 of 3