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HomeMy WebLinkAboutSW8981232_HISTORICAL FILE_19991222STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO SW8 (1V 123� DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS �] HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE \qq°I 122Z. YYYYMMDD State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office James B Hunt, Jr., Governor Bill Holman, Secretary Division of Water Quality December 22, 1999 Mr Leroy Taylor, Chairman of the Board of Trustees First Baptist Church of Leland 517 Village Road Leland, NC 28451 Am, NCDENR NORTH GROLINA DEPARTMENT OF ENVIRONMENT AND N4 RAL RESOURCES Subject Permit No SW8 981232MOD First Baptist Church of Leland High Density Stormwater Project Brunswick County Dear Mr Taylor The Wilmington Regional Office received a complete Stormwater Management Permit Application for First Baptist Church of Leland on December 22, 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 981232MOD dated December 22, 1999, for the construction of First Baptist Church of Leland This permit shall be effective from the date of issuance until December 22, 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 wlthrn 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 Scott Vinson, or me at (910) 395-3900 Sincerely, Rick Shiver Water Quality Regional Supervisor RSS/sav S \WQS\STORMWAT\PERMIT\981232 DEC cc Donald Covil, P E Delaney Aycock, Brunswick County Inspections Scott Vinson Wilmington Regional Office Central Files 127 Cardinal or 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 981232MOD 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 First Baptist Church of Leland Brunswick 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 December 22, 2009 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 on page 3 of this permit, the Project Data Sheet The stormwater control has been designed to handle the runoff from 180,164 square feet of impervious area This pond must be operated with a vegetated filter Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit The tract will be limited to the amount of bwlt-upon area indicated on page 3 of this permit, and per approved plans 2 State Stonnwater Management Systems Permit No SW8 981232MOD DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Project Name Permit Number Location Applicant Mailing Address Application Date Name of Receiving Stream/Index # Classification of Water Body If Class SA, chlonde sampling results Pond Depth, feet Permanent Pool Elevation, FMSL Total Impervious Surfaces, ftz Offsite Area entering Pond, ft2 Required Surface Area, ftz Provided Surface Area, ftz Required Storage Volume, ft3 Provided Storage Volume, ft' Temporary Storage Elevation, FMSL Controlling Orifice First Baptist Church of Leland SW8 981232MOD Brunswick County Mr Leroy Taylor, Chairman of the Board of Trustees First Baptist Church of Leland 517 Village Road Leland, NC 28451 December 22, 1999 Sturgeon Creek / CFR17 (18-77-1) "C Sw" n/a 600 1200 180,164 none, per Engineer 7,746 8,200 14,731 15,215 13 70 1 75" � pipe 3 State Stormwater Management Systems Permit No SW8 981232MOD II SCHEDULE OF COMPLIANCE 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 except roads During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately 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 outlet structure, onfice device and catch basins and piping g Access to the outlet structure must be available at all times h The vegetated filter will be kept grassed with no erosion The spreader mechanism will be kept free of sediment and trash, and must distribute the runoff evenly over the width of the filter 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 Decorative spray fountains will not be allowed in the stormwater treatment system 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 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 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 The following items will require a modification to the permit Any revision to the approved plans, regardless of size Project name change Transfer of ownerstup Redesign or addition to the approved amount of built -upon area Further subdivision of the project area Filling in, altering, or piping of any vegetative conveyance shown on the approved plan 10 The Director may determine that other revisions to the project should require a modification to the permit State Stormwater Management Systems Permit No SW8981232MOD 11 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 12 Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale of any portion of the property 13 The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built -upon area 14 The runoff from all built -upon area on the project must be directed into the permitted stormwater control system 15 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 mimmum 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 accompamed 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 22nd day of December, 1999 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Kerr T Stevens, Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 981232MOD 5 State Stormwater Management Systems Permit No SW8981232MOD First Baptist Church of Leland Stormwater Permit No SW8 981232MOD Brunswick County Designer's Certification 1, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications The checklist of items on page 2 of this form is included in the Certification Noted deviations from approved plans and specification SEAL Signature Registration Number Date State Stormwater Management Systems Permit No SW8981232MOD Certificatipn Requirements 1 The drainage area to the system contains approximately the permitted acreage 2 The drainage area to the system contains no more than the permitted amount of built -upon area 3 All the built -upon area associated with the project is graded such that the runoff drains to the system 4 The outlet/bypass structure elevations are per the approved plan 5 The outlet structure is located per the approved plans 6 Trash rack is provided on the outlet/bypass structure 7 All slopes are grassed with permanent vegetation 8 Vegetated slopes are no steeper than 3 1 9 The inlets are located per the approved plans and do not cause short-circuiting of the system 10 The permitted amounts of surface area and/or volume have been provided 11 Required drawdown devices are correctly sized per the approved plans 12 All required design depths are provided 13 All required parts of the system are provided, such as a vegetated shelf, and a forebay 14 The overall dimensions of the system, as shown on the approved plans, are provided cc NCDENR-DWQ Regional Office Delaney Aycock, Brunswick County Building Inspector „t OFFICE USE ONLY. Date Received Fee Paid Permit Number / - 9 ff UD io s 2:24!kZ2 Z2 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) First Baptist Church of Leland 2 Print Owner/Signing Offical's name and title (person legally responsible for facility and compliance) 3 Mailing Address for person listed in item 2 above City Leland State Telephone Number ( 91 n ) -471 —29 24 Zip 4 Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc) Stormwater Plan for Leland Baptist Church 5 Location of Project (street address) : erT, 6 Directions to project (from nearest major intersection) From intersection of Village Road and Navas --.a Road, go NF ahmit 1/2 m,_ Church is on left. 7 Latitude 30014'26” N Longitude 78000'45" W of project 8 Contact person who can answer questions about the project Name Tar z Tn�riny Telephone Number ( 910 ) 371-2933 EL PERMIT INFORMATION- 1 Specify whether project is (check one) New Renewal X Modification Form SWU-101 Version 3 99 Page 1 of 4 ORIGINAL 2 If this application is being submitted as the result of a renewal or modification to an existing penrut, list the existing penrut number SWR 9A1 9'19 and its issue date (if lmownl; /19 /99 - 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 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 Collected in catch basins and storm drains and directed to a stormwater detention 2 Stormwater runoff from this project drams to the Gape Fear River basin 3 Total Project Area. 8.617 acres 5 How many drainage areas does the project have? 1 4 Project Built Upon Area 48.0 % 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 alillavVie m ¢ �^�' x Lei �p wWa,p..rr�Dm�m—Sou�fl�tii a Receiving Stream Name Receiving Stream Class r SW Drainage Area 6.717 ac. Existing Impervious* Area Proposed Im ervious'Area 3.011 ac. Im envious' Area (total) 41.6 % . �,vi4Wa,�.y"YS MW On-site Buildings 1 On -site Streets On -site Parking Drives 2.523 ac On -site Sidewalks 0-191 ac- Other on -site Off -site Total 4.136 ac. Total Impervious area is defined as the built upon area mch ding, but not limited to, buildings, roads, parkrng areas, sidewalks, gravel areas, etc. Form 5WU!IOl ''Verst� 9 -JriLf, VIit Page 2 of 4 How was the off -site impervious area listed above derived? T 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, sue and the allowable built -upon area for each lot must be provided as an attachment 1 The following covenants are intended to ensure ongoing compliance with state stormwater management permit number nie 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 n/a square feet of any lot shall be covered by structures or impervious materials Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the water surface of swimming pools 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 permitted amount requires a state stormwater management permit modification prior to construction 5 AlI permitted runoff from 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 manner that 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 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 (919) 733-5083 for the status and availability of these forms 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 Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-101 Version 3 99 Page 3 of 4 VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQI A complete package includes all of the items listed below The complete application package should be submitted to the appropriate DWQ Regional Office Please indicate that you have provided the following required information by initialing in the space provided next to each item • 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 storinwater 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, 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) VII- 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) East Coast Engineering Company, PA Mailing Address O City, 4hallntta State D1C Zip 2@459 )�II�itYL• VIIL APPLICANT'S CERTIFICATION I, (print or type name of person listed in General Information, item 2) Leroy Taylor certify that the information included on this pernut 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 2H 1000 Date // —) c ' 9 c/ Form SWU-101 Version 3 99 Page 4 of 4 Fax 910 754 8049 Office 910 754 8029 December 21, 1999 East Coast Engineering Company, P.A. Consulting Engineers Mr. Scott Vinson Water Quality Section NC Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington, North Carolina 28405-3845 Re Leland Baptist Church Stormwater Plan Modification DWQ Project Number SW8 981232 Dear Mr. Vinson: 4918 Main Street Post Office Box 2869 Shanotte, NC 28459 �TORMHgTE.R (�ECE6yE- 'Ynu( DEC 2 2 1999 D PAW # 2*0 ?�P�7,3 nq) We have revised Plan Sheet # 6 as discussed during our telephone conversation today The "Pond Outlet Structure" detail specified a 3/4" orifice whereas the correct orifice diameter is 1 - 3/4" (as presented in the "Stormwater Pond Data Summary" and calculations) Two copies of the revised plan sheet are enclosed for your review Your continued assistance and consideration on this project is appreciated Sincerely, Donald M Covil, P E Enclosures pc: Mr Leroy Taylor, First Baptist Church of Leland File 99-0349 (Leland Baptist Church) Fax 910 754 8049 Office 910 754 8029 December 14, 1999 East Coast Engineering Company, P.A. Consulting Engineers Mr. Scott Vinson Water Quality Section NC Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington, North Carolina 28405-3845 Re Leland Baptist Church Stormwater Plan Modification DWQ Project Number SW8 981232 Dear Mr. Vinson: 4918 Main Street Post Office Box 2869 Shallotte NC 28459 RECEIVED DEC 1 5 1999 We have revised Plan Sheet # 6 as discussed during our telephone conversation today The revision entailed adding a screen to the top of the trash guard at the stormwater detention pond outlet Two copies of the revised plan sheet are enclosed for your review During our telephone conversation we also agreed that you make the following rumor revisions to the application forms • Under Item # III 6 of the main application, change 4 136 ac to 61 58 (%) • Under Item #I114 of the "supplement', change 7 5 and 8 3 (representing elevation) to 4 5 and 3 7 respectively (representing depth) Your attention to this matter is appreciated Please do not hesitate to contact our office should you have any further questions or comments about this project Sincerely, Donald M Covil, P E Enclosures pc: Mr Leroy Taylor, First Baptist Church of Leland File 99-0349 (Leland Baptist Church) DETENTION POND ANALYSIS PROJECT # SW8 981232 PROJECT NAME First Baptist Church of Leland FILE NAME S \WQS\POND\981232 WK1 REVIEWER sav DATE 13-Dec-99 Receiving Stream Sturgeon Creek Class C Sw Chlorides n/a Drainage Basin Cape Fear Index No CPF 17 (18-77-1) Site Area 862 acres Drainage Area 292592 52 square feet needs to be verified Area in Acres 672 acres IMPERVIOUS AREA Rational C-list beside each item below in E15 to E20 On -Site Buildings 6194232 square feet On -Site Parking/Drives 109901 88 square feet On -Site Sidewalks 831996 square feet square feet square feet square feet TOTAL 1 180164161 Cc= 008 % IMPERVIOUS 61 58% Pond Depth 6 0 TSS 85 SURFACE AREA CALCULATION Rational ? If Rational is used put a SA/DA 2 65% "1" in box E26 If not, leave it blank Req SA 7746 square feet Prov SA 8200 square feet [From plan Contours] 11WAI Bottom 6 00 MSL Perm Pool 12 00 MSL Design Pool 1370 MSL Design SA 9700 square feet Req Volume 14731 cubic feet Prov Volume 15215 1 cubic feet Avg Head = Flow Q2, cfs 0 085 Flow Q5, cfs 0 034 No of Orifices ODiameter, in Q, cfs = Pool Volume= Forebay Volume= Jed Volume= Storm 081 ft Area, in 283 Area, in2 1 13 25950 5190 5820 inches 1 75 Area = 2 405 in2 0 073 Drawdown 2 4 days COMMENTS Surface Area, Volume and Onfice are within Design Guidelines r Fax 910 754 8049 Office 910 754 8029 November 19, 1999 East Coast Engineering Company, P.A. Consulting Engineers Delivery By Hand Ms. Linda Lewis Water Quality Section NC Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington, North Carolina 28405-3845 Re Leland Baptist Church Stormwater Plan Modification DWQ Project Number SW8 981232 Dear Ms. Lewis: 4918 Main Street Post Office Box 2869 Shallotte, NC 28459 E C E I V E NOV 19 1999 D PROi a EA'?,Z3Z ROO The First Baptist Church of Leland currently has a low density development stormwater approval for their initial phase of expansion The original approved stormwater management plan was approved under the above referenced DWQ project number Since the construction of future phases of the project will exceed the impervious surface allowance under the low density approach, the enclosed plans have been prepared to address a modified high density stormwater management plan which covers the project at complete build -out The enclosed high density plan entails conversion of the previously approved stormwater management systems from surface flow to a stormwater collection and piping system, with treatment provided by a stormwater detention pond Please find enclosed the following documents which constitute a high density stormwater submittal for the ultimate "built -out' of this project 1 Two sets of Plan Sheets 1 thru 7, 2 Two copies of the hydrologic and hydraulic calculations, 3 One original and one copy of the executed "Stormwater Form", 4 One on coal and one copy of the Wet Detention Basin Supplement with executed Operation and Maintenance Agreement, and, 5 A check in the amount of $420 00 to cover the required application fee The board of trustees of the church are encouraged by the growth within their church body, and have requested that we relay to you that they would appreciate any assistance you could provide as related to your review and ultimate approval of this project Ms. Linda Lewis Page 2 Leland Baptist Church November 19, 1999 Modified Stormwater Plan Please be aware that we are making the required Erosion and Sedimentation Control submittal today under separate cover to Mr Dan Sams of the Land Quality Section regarding the additional land disturbing activities associated with the enclosed high density stormwater submittal As always, your attention to this matter is greatly appreciated Please do note hesitate to contact Mr Don Covil at our office should you have any questions or comments and we will be happy to respond immediately Sincerely, Al wis, Vice President Donald M Covil, P E Enclosures pc- Mr Leroy Taylor, First Baptist Church of Leland File 99-0349 (Leland Baptist Church) H J1 ri t ti y� r r tY� � 0 LELAND BAPTIST CHURCH Leland, North Carolina HYDROLOGIC AND HYDRAULIC CALCULATIONS for Erosion Control and Stormwater Management November 1999 c 9499 0011t. ��1�, M �o East Coast Engineering Company, P A Shallotte, North Carolina Sur""RMWATER j�ECEIVED uunnuuff NOV 19 1999 owa PFIDJ a LELAND BAPTIST CHURCH DRAINAGE SUB -BASIN DATA Sub -Basin I D Draina a Area Rational 'C" Value sf ac and 24400 0 5601 I 0 65 a 7920 0 1818 0 85 b 15260 0 3503 I 0 75 c I 14860 0 3411 0 70 d 14670 0 3368 0 70 e 10180 0 2337 0 85 f 6170 0 1416 I 0 70 9 6310 0 1449 0 70 h 6500 0 1492 0 65 1 22340 0 5129 0 50 18630 0 4277 0 85 k 6890 0 1582 0 85 1 I 6210 0 1426 0 75 m 25590 0 5875 0 85 n 4670 0 1072 0 85 0 8470 0 1944 0 70 p 8100 0 1860 0 55 q 16610 0 3813 0 75 r 13540 0 3108 0 85 s 16470 0 3781 0 65 t 6820 0 1566 0 60 u 6050 0 1389 0 60 v 10240 0 2351 0 60 w 9750 0 2238 0 65 x 7510 0 1724 0 70 LELAND BAPTIST CHURCH 010 HYDROLOGY FOR STORM DRAINS AND CATCH BASINS STORM DRAIN OR BASIN I D CONTRIBUTING SUB -BASINS TOTAL D A ac WBGHTED "C" VALUE BASIN RAINFALL INTENSITY (m1hr) Of 0 PEAk FLOWRATE (cfs LENGTH ft SLOPE ft/ft ADJ FATCTOR TIME OF CONC tmm I a thru x_ 6 1 SD -POND 6 19 0 72 (time of concentration calculated by hand) 7 00 27 2 SDI bcdfghilmnopgrstuvwx 528 068 1020 00050 - 050 622 64_ _ 231 90 SD2 bcdfghi 19768 065 - <50 70 SD3 c d h i 1 3400 0 8496 0 62 0 58 - - - - - - < 5 0 < 50 7 0 7 0 5 8 3 4 SD4 di SD5 1 _ 0 5129 0 50 - - < 5 0 7 0 1 8 SD6 Imnopgrstuvwx 32146 072 880 _ 00040 050 600 67 155 SD7 f g 0 2865 0 70 - - - < 60 7 0 1 4 SD8 g 0 1449 0 70 - - - < 50 7 0 0 7 SD9 h 0 1492 0 65 - - - < 50 7 0 0 7 SD 10 e I k 0 8196 0 85 - - - < 50 7 0_ 4 9 SDII e k 0 3919 0 85 - - - < 5 0 7 0 2 3 SD13 _ mn,o,pgrstuvwx 30721 072 - - - <50 _ 70 155 SD14 nopqrstuvwx 2 4846 0 69 - - - < 50 _ 7 0 12 0 SD15 opqrs,tuvwx 23774 068 - - - < 5 0 70 113 SD16 pqrs 12562 072 - - - < 5 0 70 63 SD 17 q r s 1 0702 0 74 - - - < 50 7 0 5 6 SD18 deleted SD 19 s 0 3781 0 65 - - - < 5 0 7 0 1 7 SD20 _ t u v w x_ _ 0 9268 _ 0 63 - - - < 5 0 7 0 4 1 SD21 deleted _ _SD22 vwx _ 06313 065 - - - <50 70 29 SD23 _ w x 0 3962 0 67 - - < 5 0 7 0 1 9 SD24 x 0 1 724 1 0 70 1- - < 5 0 7 0 _ 0 8 LELAND BAPTIST CHURCH 010 HYDROLOGY FOR STORM DRAINS AND CATCH BASINS C 1 e 0 1818 _ 0 85 - - < 5 0 7 0 1 1 C2 b 0 3503 0 75 - - - < 5 0 7 0 1 8 C3_ _ _ c _ _ 0 3411 0 3368 0 70 0 70 - _ - - - < 5 0 7 0 / 7 C4 d - < 5 0 7 0 1 7 C5 _ 0 5129 0 50 - - - < 5 0 7 0 1 8 C6 deleted _ _ _C7 f 01416 070 ----- - < 5 0 70 07 C8 9 0 1449 0 70 — - - - < 50 7 0 --- 0 7 C9 h 0 1492 0 65 _ - - - < 5 0 7 0 0 7 C10 1 04277 085 - - - < 5 0 70 25 C 11 e k 0 3919 0 85 - - - < 50 7 0 2 3 C12 1 01426 075 - - - < 5 0 70 07 C13 m 05875 085 - _ - - <50 70 35 C 14 n 0 1072 0 85 - - - < 5 0 7 0 0 6 C15 o,q,t 0 7323 0 70 - - - < 5 0 7 0 3 6 C16 P 01860 055 - - - <50 70 07 C17 r 03108 085 _ - - < 5 0 70 1 8 C18 deleted _- C19 s _ 0 3781 0 65 < 50 0 1 7 C20 deleted _7 C21 u 0 1389 0 60 - - - < 5 0 7 0 0 6 C22 v 0 2351 0 60 < 50 7 0 1 0 C23 _w _ 0 2238 0 65 < 5 0 7 0 1 0 C24 X 1 0 1724 1 0 70 - - - < 5 0 _ 7 0 0 8 LELRND BflPTIST CHURCH - STORM OWN BOTH TRBLE PROJECT NAME Designer Date LELAND BAPTISTCHURCH DMC 1118199 STRl1MRE ID Pond SD SDI SD2 SD3 SD4 SD5" SOB SD7 SDS SD9r SDIO SDII SDl2 SD 13 FLOWRATE (cfs) 5 8 27 2 23 1_ 9 0 _ 3 4 1 8 15 5 1 4 07 0 7 4 9 2 3 15 5 PIPE DIAMETER m 30 30 24 18 15 12 30 12 12 _ 12 15 12 E 24 INVERT IN ELEV 45 0 16 4 18 0 192 19 7 20 5 17 1 21 1 21 7 _ 22 0 16 8 17 8 E 17 7 INVERT OIfT ELEV 9 5 15 0 17 3 _ 18 0 _ 19 2 20 0 16 4 20 7 21 1 _ 21 3 160 168 T E 17 1 — —HOPE _— D —_ __ — TYPE PIPE FDPE HOPE HOPE HOPE HOPE HDPE HOPE HOPE FIDPE FDPE HOPE FEE _ _MANNINGSNVALUE 0012 0012 0012 0012 _ 0012 0012 0012 0012 0012 0012 0012 0012 0012 PIPE LENGTH It 140 140 115 235 95 _ 95 135 70 120 135 130 70 110 _ _ Ctl Dlschar a Coef 0 62 0 62 062 0 62 0 62 0 62 0 62 0 62 0 62_ 0 62 0 62 0 62 0 62 _ RISER DIAMETER In 0 0 0 0 0 0 0 0 0 0 0 0 _p _ ill SER ELEVATION 0 0 0 0 0 0 0 0 0 0 0 0 _ _ WEIR ROW COEF 40 40 40 40 _ 40 40 40 40 40 40 40 N— 40TAILWATER ELEV 14 55 17 50 19 30 19 79 20 83 21 36 1890 21 70 22 10 22 30 17 25 19 47 --4 _ Pipe Area s0 9094 4 9094 3 1420 17674 12273 0 7855 4 9094 0 7855 0 ]855 0 7a55 1 2273 0 7855 3 1420 _ W,tted Pr nmoter (i0 7 855 7 855 6 284 4 713 3 9275 3 142 7 855 3 142 3 142 3 142 3 9275 3 142 _ _ 6 2E4 _ _ HpdrauhL Radius 0 63 063 0 50 0 38 0 31 025 063 0 25 0 25 0 25 0 31 025 _ 0 50 Pipe' Head (It) 1 76 1 27 0 49 1 04 0 53 0 42 0 57 0 22 0 07 008 1 28 059 _ 1 42 Pipe Backwater Elev 1631 18 77 19 79 20 83 21 36 21 78 19 47 21 92 22 17 22 38 18 53 1912 20 89 Weir Head (It) 0 00 0 00 000 000 0 00 000 0 00 000 000 000 0 00 000 0 00 Weir Backwater Elev 0 00 000 0 00 000 0 00 0 00 0 00 000 000 0 00 0 00 000 000 ACCEPTED BW ELEV "' t16 37 18 77 19 79 r j ,,n20 83y=z,p,e2 P36' "" Y' 2,1-78 + �'x{B 47,E .,�p+� + '-'v .e'` e vU..i g� j;1ai' qr"' -,21�92 `„ E-, 22 17 r .1 22 38-�yi p,,a„+f`^118 53 5, 19^12�rC'+'�rr�20 89jrr T BW f Structure Elev 27 39 23 70 4 93 22 710 21 670 22 04 40 1 262,020 0 22 �23 03 2 50 23 20 23 03 �� 2I 20 57 210 60 20 162 8810 REFERENCE CMIEnotn ednn Referenm Manial pages}198620 TYPE41PIPEFLOW (submerged outlet) Is consewabvehr assumed due to the fact Dal flood condnlons are being considered N NYvv W p r] Ipr rmwN mY XDVE or [wxnY Sv mruN[Ynn IYnb� br Q.IP GE VYnv Uu Ot}bp.Ynnbge TnYVv wLn Mam qY ^Y^^YMM mmYCa gcgNq wMn TJn�br EbnMr TIY Ytl�W an�kp n qW b M CVYwVYr Yrnhn q Yy ppPrn rq pv rrvnl W arr�Y-n q yy anw iq qe En pp Jnnur 14n b pp bn twq mnuLMl �v W4eb YII\Inl eM1Wvn n pxb LEUNO 8flPTIST CHURCH - STORM ORRIN OflTR TOLE __- SiAUCil1RE ID SUM SD15 SD16 SD17 SD 18 SD19 SD20 SD21 SD22 SD23 SD24 FLOWRATE (cam 12 0 11 3 1- 6 3 56 1 7 _ 4 1 2 9 1 9 O B D D _ PIPE DIAMETER (I� 24 24 18 E 15 18 E 15 15 12 —24 L __L E INVERT IN ELEV 18 2 19 1 19 5 20 2 E 20 5 19 3 20 3 20 7 21 0 INVERT Ol7T ELEV _ T T E 17 7 _ 18 2_ _19 1 19 5 E 20 2 _ 19_1 199 20 3 20 7 HDPE D D _ TYPEPIPE FOPE HDPE FIDPE HOPE HOPE FDPE - FOPE FOPE MANNING VALUE 0012 0012 0012 0012 0012 0012 0012 0012 0012 PIPE LENGTH R 95 175 80 140 60 140 70 85 65 Ctl Discharge Coef 0 62 0 62 _ 062 0 62 0 62 0 fit 062 0 62 062 RISER DIAMETER in 0 0 0 0 0 0 0 0 0 RISER ELEVATION 0 0 0 0 0 0 0 0 0 WEIR FLOW COEF 40 40 4 0 4 0 40 1 4 0 4 0 4 0 4 0 _ TAILWATER ELEV 20 89 21 70 22 59 22 81 23 55 22 59 22 99 23 34 23 50 -Pipe Area (si) 3 1620 3 1420 3 1420 1 7674 1 2273 1 7674 _ 1 2273 1 2273 0 7855 Welted Panmoler �11) 6 284 8 284 6 204 4 ] 13 3 9275 4 713 3 9275 3 9275 3 142 Hydraulic Radius 0 50 0 50 0 50 0 38 0 31 0 38 0 31 0 31 025 Pipe Head (ft) 0 82 089 0 21 0 74 _ 0 11 040 0 34 0 16 0 07 Pipe Backwater Elev 21 70 22 59 22 81 23 55 23 66 22 99 _ 2334 23 50 23 57 Weir Head (ft) 0 00 0 00 0 00 0 00 0 00 000 000 000 0 00 Weir Backwater Elev 0 00 0 00 0 00 000 0 00 ACCEPTED BW ELEV F1tY21=70, uu 22"59L`"2-2 81-�jQ%23 SS�r! ;,�i;23 6'6& TBW i Structure Elev �21 00 I 20 311 20 59 0 25 0 66 I 0 00 —Wl 2'99x.?.'t@5„H1 20 29 -� _ 0 00 000 0 00 23'3 ;; 1�1�q�,„23 50r sy 235'7,q„» 0 34 0 50 0 170 CATCH BASINS CALCULATIONS SUMMARY Curb Inlet ID010 PeakHead E Allowable @ ft Minimum Value Required at Allowable Head T e Inlet Neenah Inlet Selected Orifice Flow Open Area sf Weir Flow Perimeter ft Flat Concave C1 1 1 0 35 0 39 1 61 X R-3345 C2 1 8 0 30 0 68 3 32 X I R-3345 C3 1 7 0 30 0 64 3 14 X R-3345 C4 1 7 0 30 0 64 3 14 X R-3345 C5 1 8 0 50 0 53 1 54 X R 3403 C6 deleted C7 0 7 I 0 40 0 23 0 84 X R-3402 C8 0 7 0 40 0 23 0 84 X I R-3402 C9 0 7 0 35 0 25 1 02 X R_3402 C10 2 5 0 35 0 88 3 66 X R-3403 C11 2 3 0 30 0 87 4 24 X R-3345 C12 0 7 0 30 0 27 1 29 X R-3402 C13 3 5 0 30 1 33 6 45 X R-3348 C14 O 6 0 30 0 23 1 11 X R-3402 C15 3 6 0 30 1 37 6 64 X R-3348 C16 0 7 0 40 0 23 0 84 X R-3402 C17 1 8 0 30 0 68 3 32 X R-3403 C18 deleted C19 1 7 0 40 0 56 2 04 X R-3403 C20 deleted C21 0 6 0 40 0 20 0 72 X R-3402 C22 1 0 0 40 0 33 1 20 X R-3403 C23 1 0 1 0 40 0 33 1 20 I X I _ R 3403 C24 0 8 1 0 40 I 0 26 I 0 96 1 X I R 3402 T 4 1 stings CONCAVE GUTTER INLETS R-3341 to R-3351 Series Concave ' ' , - I Gutter Inlet Frames and Grates - Heavy Duty Catalog Dimensions in inches Wt No A AA I B D I DD E EEI F I 1 Lbs R-3341 7'h 1 Ph 1'/a 8 11'h 15'/2 19 6 s: 85 R-3342' 111h 15 1 10 15 18 23 9'h 1 270 R-3344tt 13 24 2 13 24 23 34 9'h 1 26C R-3345 15 26 1''h 12 26 20 34 6 1'/c 280 R-3346 15 38'h 111 16'h 40 23 47 7Vo 1 395 R-3347 22': 22i4 2V2 20'/a 20'h 36 D. 8 Vi 47C R-3347 A 22 re 39s5 2 18'Fi 35'/. 29s4 46'h 6 1 810 R-3348 24 24 2 261/6 26'h 35 35 7 1 495 R-3350 28 28 1!/4 29 29 35 35 6 1s/ 43C R-3351t 28 28 1/i 29 29 35 35 6 1' 500 R-3350 Frame and Grate R-J342 Frame and Grate Also avadable with 30 diameter base tFurmshed with openings parallel with gutter tfGrate supported by lLgs -J— ® Not mcommended for bicycle traffic For safety standardsoo— see pages 88 to 93 R-3349-A Concave Gutter Inlet Frame and Grate Heavy Duty Total Weight 350 Pounds i l- 2B Ir 716 x LZ R-3402-3 Gutter Inlet Frames and Grates Heavy Duty r j_A pl �la fEE5EE _ _I �E--+ Catalog Dimensions in inches Wt No A B D E F I G H Lb Square R-3402 77%azll%a lYe ll�xll%a 77z17 a lY2xlys 75 R 3402E 24x24 lyi 2ax2a 29Yx29Y. 5 2%x6u, 1 3n0 Rectangular R 3403 16Y.x22Y• 1'a/.e 16Yx22Y. 25x3044 57A INx4V.. 1 225 R-3403-A1 Gutter Inlet Frame and Grate `_" Heavy Duty Total Weight 445 Pounds Its _WTI R-3403-F Gutter Inlet Frame and Grate Heavy Duty Total Weight 485 Pounds R-3404-5 Gutter Inlet Frames and Grates Heavy Duty A 11r� ter -�-, m Catalog Dimensions in inches Wt No A B C 1 D 1 E F G H Lbs R 34a4 21'/rx21'h I'h 20Ysx205L 229ax22%a w0 30ya 5' 242 '35a 275 R3" 23yax23yo 1'/a 22x22 2aa/x24Y 32%x32% 6 2;bx25y I 345 R 3404A 23 %ax23 %a 2 22s22 24%az24%a 32%ax321A 6% 2'/.x2'/a I%1a 460• R 3404E 23yax23ya 2 22x22 24%ax24� 32'Az29 6ya 2'/.x2'/ 1%1a 440• •5ame as R 3405 A except base flange on 3 sides only -Also a.ailable wah Type E grin. See R 3588 E Illustrating R 3402 E Illustrating R-3405 ;- 155 Q1O PIPE HYDRAULICS PROJECTNAME'Leyland Baptist ptlst Church --- Designer; DMC/SMH 1 � --- � -- --- - Date 1 1 / 9 / 9 9 BACKWATER STRUCTURE ID SD -Pond TYPE FLOW HEAD ELEV I I FLOWRATE cfs c,` -° 29 4 PPE 1 60 13 601 1 PIPE DIAMETER m _,` 30 WBR 0 85 14 55 INVERT -IN ELEV ," 11 21 1-- ACCEPTED BACKWATER ELEVATION IS THEHIGHEROFTHETWOCALCULATED INVERT -OUT ELEV = .,11 0 I TYPEPIPE a ` HDPE I I MANNING'S N VALUE 0 012 1 PIPE LENGTH ft 35 I I _ I I Cd (Discharge Coef 0 62 RISER DIAMETER m 36 Pipe Area sf 4 909375 1 I 1 I RISER ELEVATION ` ",,13 701 1 Wetted Perimeter ft) 7 855 WEIR FLOW COEF 41 1Hydraulic Radius 0 63 1 TAILWATER ELEV v -12 0 REFERENCE CM Engineering Reference Manual pages 5-19 & 5 20 TYPE4 PIPEFLOW (submerged outlet) is conservatively assumed due to the fact that flood conditions are being considered N Values Use 0 12 for smooth wall HDPE or concrete See manufacturers literature for CMP Cd Values Use 0 62 for square -edged openings unless know that opening will be rounded or projecting outward STORMWATER POND DRAWDOWN CALCULATIONS PROJECT NAME Leland Baptist Church POND I D (Only one pond) DESIGNER DMC/SH DATE 11/17/99 NORMAL POOL I elevation 12 00 I surface area 8200 sf I I STORAGE POOL I elevation 13 70 ft msl I surface areal 9700 sf I I I ORIFICE elevation 12 00 ft ms1 diameter 1 75 inches # of ORIFICES 1 Time Increment for Drawdown 2 hr Begin Water Orifice Incremental Drop in Water End_Water Time Hr 0 Elev ft msl 13 70 Head ft 1 70 O cfs 0 1049 Vol(of) 755 Surface ft 0 0844 _ Elev _(Ltmst) 13 62 2 13 62 1 62 0 1022 736 0 07 55 _ 13 54 4 13 54 1 54 0 0998 718 0 0752 13 46 6 13 46 1 46 0 0973 701 0 0738 13 39 8 13 39 1 39 60948 683 0 0724 13 32 10 13 32 1 32 0 0923 665 0 0710 13 25 12 13 25 1 25 0 0898 647 0 0695 13 18 14 13 18 1 18 0 0873 628 0 0680 13 11 16 13 11 1 11 0 0847 610 0 0664 13 04 18 13 04 1 04 0 0821 591 0 0648 12 98 20 12 98 0 98 0 0795 573 0 0632 12 91 22 12 91 0 91 0 0769 554 0 0615 12 85 24 12 85 0 85 0 0743 535 0 0597 12 79 26 12 79 0 79 0 0716 516 0 0580 12 74 28 12 74 0 74 0 0690 497 0 0561 12 68 30 12 68 0 68 0 0663 477 0 0542 12 63 32 12 63 0 63 0 0636 458 0 0523 1 _ 12 57 34 12 57 0 57 0 0609 438 0 0503 12 52 36 12 52 1 0 52 0 0581 419 0 0483 12 47 38 12 47 1 0 47 0 0554 399 0 0463 12 43 40 12 43 0 43 0 0526 379 0 0442 _ 12 38 42 12 38 0 38 0 0498 359 0 0420 _ 12 34 44 12 34 0 34 0 0470 339 0 0398 12 30 46 12 30 0 30 0 0442 318 0 0376 12 26 48 12 26 1 0 26 0 0414 298 0 0353 12 23 50 12 23 0 23 0 0385 277 0 0330 12 20 52 12 20 0 20 0 0356 256 0 0306 12 17 54 12 17 0 17 0 0327 1 236 0 0282 1 12 14 56 12 14 0 14 0 0298 215 0 0258 12 11 58 12 11 0 11 0 0269 193 0 0233 12 09 60 12 09 0 09 0 0239 172 0 0208 12 07 62 12 07 0 07 0 0209 150 0 0182 1 12 05 64 12 05 0 05 0 0178 128 0 0156 12 03 66 12 03 0 03 0 0147 106 0 0129 12 02 68 1202 002 00116 83 00101 1201 70 12 01 0 01 0 0083 1 60 0 0073 12 00 FOREBAY VOLUME COMPARED TO TOTAL POND VOLUME ELEVATION SURFACE AREA S INCREMENTAL VOLUME C ACCUMULATED VOLUME C FT MSL FOREBAY MAIN POND FOREBAY MAIN POND FOREBAY MAIN POND 6 2023 2203 0 2203 7 504 2384 613 2578 613 4782 8 722 2772 847 2979 1460 7760 9 972 3186 1 114 3405 2574 11165 10 1255 3625 1413 3858 3987 15023 11 1 1570 4090 1833 5108 5820 20131 12 2095 6125 2271 6333 I 8090 26464 13 2446 6541 1827 1 4736 9917 31200 13 7 i 2773 6992 FOREBAY VOLUME/TOTAL POND VOLUME = 0 241 PROJECT NAME Leland First Baptist CHANNEL I D Vegetated filter downstream of SW Pond outlet Designer ONC Date 11/18/99 22MP(/7ED O (CFS) Target O (cfs) 294 29 7 Left Bank Sloe HN 3 Right Bank Slo a HN 3 Bottom Witlth ft 5 Manning' n 003 Channel Sloe ft/ft 0004, FLOW DEPTH 1 23 AVERAGEVELOCITY FPS 278 Flow Area (s/) 10 6887 Wetted Perimeter (R) 12 779 Hydraulic Radius (R) 0 836 a STORMWATER DETENTION POND CALCULATIONS SUMMARY Project Name Leland Baptist Church Designer DMC/SMH Date 11/16/99 Area Draining to Pond ADP -Contingencyfor Current Proect 292600 SF 6 717jAC Future Growth SF 0 000JAC Total 292600 SF 1 6 717JAC Built -Upon Area BUA Current Project Buildings 61930 SF 1 422 AC Parkin Roads 109900 SF 2 523 AC Walkwa 8340 SF 0 191 AC Contin enc for Future Growth SF 0 000 AC Total 180170JSF 4 136JAC I IBUA/ADP I 1 0 6161 j i -- Runoff from 1" Rainfall 147321CF 185% or 90% TSS Removal 85I 1 Pond Depth 6 FT �SA/ADP Ratio 0 0265 Water Surface Areas Minimum Re cared at Normal Pool I 77541SF Amount Proposed at Normal Pool I 8200 Sc Amount at Storage Pool I 9700 SF Elevations Bottom 6 I FT MSL Normal Pool 121 FT MSL Storage Pool 13 71 FT MSL Flood Pool 1 14 7 FT MSL