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SW8080527_HISTORICAL FILE_20081216
PERMIT NO DOC TYPE DOC DATE STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS SW8 �$05Z1 ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION ()() rd 17-. u YYYYMMDD Michael 1 I asley Governor William G Ross Jr Secretar) North Carolina Department of Environment and Natural Resources Coleen H Sullins Director Division of Water Quality December 16, 2008 Mr Brian McCall, Member and Organizer East Coast Entertainment of Shallotte, LLC 205 8th Avenue North North Myrtle Beach, SC 29582 Subject State Stormwater Management Permit No SW8080527 Family Entertainment Center of Shallotte High Density Commercial Wet Pond Project Brunswick County Dear Mr McCall The Wilmington Regional Office received a complete State Stormwater Management Permit Application for Family Entertainment Center of Shallotte on November 7, 2008 Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Session Law 2006-246 and Title 15A NCAC 2H 1000 We are forwarding Permit No SW8080527, dated December 16, 2008, for the construction and operation of the subject project This permit shall be effective from the date of issuance until December 17, 2018, 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 Aisha Lau, or me at (910) 796-7215 Sincerely, A�"� c.S"j`t Georgette Scott Stormwater Supervisor Division of Water Quality GDS/ahl S \WQS\STORMWATER\PERMIT\080527 dec08 cc Mr Jay R Houston, P E — Houston and Associates, P A Brunswick County Inspections Jeff Phillips, Brunswick County Engineering (Wilmington Regional Office Central Files N,�p�}�`thnCarolina �vWum/!y North Carolina Division of Water Quality 127 Cardinal Drive Extension Wdmmgion NC 28405 Phone (910) 796 7215 Customer Service Wilmington Regional Office Internet www,ncwgterguality.org Fax (910) 350 2004 1877 623 6748 An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper State Stormwater Management Systems Permit No SW8080527 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL 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 Mr Brian McCall and East Coast Entertainment of Shallotte, LLC Family Entertainment Center of Shallotte Whiteville Highway— NC130, Shallotte, Brunswick County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of Session Law 2006-246 and 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 17, 2018, 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 in Section 17 of this permit The stormwater control has been designed to handle the runoff from 345,431 square feet of impervious area, of which 135,545 square feet of built -upon area is for future development 3 The tract will be limited to the amount of built -upon area indicated in Section 17 on page 3 of this permit, and per approved plans 4 All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans 5 The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system 6 The built -upon areas associated with this project shall be located at least 30 feet landward of all perennial and intermittent surface waters Page 2 of 8 State Stormwater Management Systems Permit No SW8080527 7 The following design criteria have been provided in the wet detention pond and must be maintained at design condition a Drainage Area, acres Onsite, ft Offsite, ftZ b Total Impervious Surfaces, ftZ Buildings, ftZ Roads/Parking, ftZ Sidewalk & Concrete, ftZ Offsite, ftZ c Average Pond Design Depth, feet d TSS removal efficiency e Design Storm, inches f Permanent Pool Elevation, FMSI g Permanent Pool Surface Arel, ft h Permitted Storage Volume, ft i Storage Elevation, FMSL I Pre-dev 1 year 24 hour rate, cfs k Controlling Orifice 1 Permanent Pool Volume, ft3 m Forebay Volume, ft3 n Maximum Fountain Horsepower o Receiving Stream / River Basin p Stream Index Number q Classification of Water Body it SCHEDULE OF COMPLIANCE 1220 230,432 301,000 345,431 50,000 159,886 0 135,545 5 90% 15 55 26,889 45,401 7 21 3" O pipe 136,905 26,588 1/2 Mulberry Branch / Lumber 12-25-2-7 "C, S W" 1 The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface 2 During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately 3 The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to a Semiannual scheduled inspections (every 6 months) b Sediment removal c Mowing and re -vegetation of slopes and the vegetated filter strip d Immediate repair of eroded areas e Maintenance of all slopes in accordance with approved plans and specifications f Debris removal and unclogging of outlet structure, orifice device, level spreader, filter strip, catch basins and piping g Access to the outlet structure must be available at all times 4 Records of maintenance activities must be kept for each permitted BMP The records will indicate the date, activity, name of person performing the work and what actions were taken The permittee shall submit to the Division of Water Quality an annual summary report of the maintenance inspection records for each BMP The report shall summarize the inspection dates, results of the inspections, and the maintenance work performed at each inspection Page 3 of 8 State Stormwater Management Systems Permit No SW8080527 Access to the stormwater facilities shall be maintained via appropriate easements at all times The facilities shall be constructed as shown on the approved plans This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation Any deviations from the approved plans and specifications must be noted on the Certification 9 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 10 The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below a Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc b Project name change c Transfer of ownership d Redesign or addition to the approved amount of built -upon area or to the drainage area e Further subdivision, acquisition, lease or sale of all or part of the project area The protect area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought f Filling in, altering, or piping of any vegetative conveyance shown on the approved plan 11 The 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 12 The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction 13 A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction Page 4 of 8 State Stormwater Management Systems Permit No SW8080527 III GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director In the event of a change of ownership, or a name change, the permittee must submit a completed Name/Ownership Change form, to the Division of Water Quality, signed by both parties, and accompanied by supporting documentation as listed on page 2 of the form The protect must be in good standing with the Division The approval of this request will be considered on its merits and may or may not be approved 2 The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request 3 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 4 The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction 5 In the event that the facilities fail to perform satisfactorily, 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 6 The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility 7 The permit issued shall continue in force and effect until revoked or terminated The permit may be modified, revoked and reissued or terminated for cause The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition 8 Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual 9 Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit 10 The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2006- 246, Title 15A NCAC 2H 1000, and NCGS 143-215 1 et al 11 The permittee shall notify the Division of any name, ownership or mailing address changes at least 30 days prior to making such changes Page 5 of 8 State Stormwater Management Systems Permit No SW8080527 12 The permittee shall submit a permit renewal application at least 180 days prior to the expiration date of this permit The renewal request must include the appropriate documentation and the processing fee Permit issued this the 16th day of December 2008 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION %r Coleen N Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission Page 6 of 8 State Stormwater Management Systems Permit No SW8080527 Family Entertainment of Shallotte, LLC Stormwater Permit No SW8080527 Brunswick County Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications The checklist of items on page 2 of this form is included in the Certification Noted deviations from approved plans and specification Signature Registration Number Date SEAL Page 7 of 8 State Stormwater Management Systems Permit No SW8080527 Certification Requirements 1 The drainage area to the system contains approximately the permitted acreage 2 The drainage area to the system contains no more than the permitted amount of built -upon area 3 All the built -upon area associated with the protect is graded such that the runoff drains to the system 4 All roof drains are located such that the runoff is directed into the system 5 The outlet/bypass structure elevations are per the approved plan 6 The outlet structure is located per the approved plans 7 Trash rack is provided on the outlet/bypass structure 8 All slopes are grassed with permanent vegetation 9 Vegetated slopes are no steeper than 3 1 10 The inlets are located per the approved plans and do not cause short- circuiting of the system 11 The permitted amounts of surface area and/or volume have been provided 12 Required drawdown devices are correctly sized per the approved plans 13 All required design depths are provided 14 All required parts of the system are provided, such as a vegetated shelf, and a forebay 15 The required system dimensions are provided per the approved plans cc NCDENR-DWO Regional Office Brunswick County Building Inspections DWQ USE ONLY Date RLcewCd Fee Paid Permit Numbi.r soyt1a6 sws "4 �/ a'"� 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) East Coast Entertainment of Shallotte, LLC 2 Print Owner/Signing Officials name and title (person legally responsible for facility and compliance) Brian McCall, Member/Manager/Organizer 3 Mailing Address for person listed in item 2 above City North Myrtle Beach State SC Zip29582 Phone (843 ) 249-4562 Fax (843 ) 249-4562 Email bm80allstarOaol com 4 Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc ) Family Entertainment Center of Shallotte 5 Location of Project (street address) Whiteville Highway - NC130 City Shallotte County Brunswick Zip 28459 6 Directions to project (from nearest major intersection) From intersection of US-17 South Bypass and NC130, exit right onto NC130 offramp turn left on NC130 East Projext is on left next to and behind Lowe s 7 Latitude 33' 58' 28" N Longitude 78° 23' 46" W of project 8 Contact person who can answer questions about the project Name Brian McCall telephone Number Email bm80allstar@aol com II PERMIT INFORMATION 1 Specify whether project is (check one) ®New ORenewal P"'. cwn -ini nz o7 nv vas,. i . f n 2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit numbern/a and its issue date (if known)n/a 3 Specify the type of project (check one) ❑Low Density ®High Density ❑Redevelop ❑General Permit [-]Universal SMP ❑Other 4 Additional Project Requirements (check applicable blanks, information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748) ❑LAMA Major MSedimentation/Erosion Control ❑404/401 Permit ❑NPDES Stornn"ater 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 Stormwater runoff will be collected and treated in one (1) stormwater pond which will have extra capacity for treatment of future impervious area 2 Stormwater runoff from this project drams to the Lumber River basin 3 I otal Property Area 5 29 acres 4 I otal Wetlands Area 0 acres 5 100 Wide Strip of Wetland Area n/a acres (not applicable if no wetlands exist on site) 6 Total Project Area" 5 29 acres 7 Project Built Upon Area 91 1 8 How many drainage areas does the project have?l 9 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 For high density projects, complete the table with one drainage area for each engineered stormwater device Basin Information Drainage Area 1 Drainage Area 2 Receiving Stream Name Mulberry Branch Stream Class & Index No C Sw 15-25-2-7 Total Drainage Area (sf) 531,432 On -site Drainage Area (sf) 230,432 Off -site Drainage Area (sf) 301,000 Existing Impervious* Area (sf) 0 Proposed Impervious*Area (sf) 345,431 °„ Impervious` Area (total) 65% Impervious` Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings (sf) 50,000 On -site Streets (sf) 159,886 On -site Parking (sf) On -site Sidewalks (sf) Other on -site (sf) Off -site (sf) 135,545 Total (sf) 345,431 Pn'm cwn_I nI nc 17 nR va,,,. 1 ,CA Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sideroa/ks, gravel areas etc **Total project area shall be calculated based on the current policy regarding Inclusion of wetlands in the built upon area percentage calculation This is the area used to calculate percent project built upon area (BUA) 10 How was the off -site impervious area listed above derived?311 acres (311.545 SF) is future development considered to be offsite to this pond IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following 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 Forms can be downloaded from htlu / /h2o enr state nc us/su /bmp formti Min - deed restrictions Form DRPC-1 Hugh Density Commercial Subdivisions Form DRPC-2 Hugh Density Developments with Outparcels Form DRPC-3 Hugh Density Residential Subdivisions Form DRPC-4 Low Density Commercial Subdivisions Form DRPC-5 Low Density Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required in the above form, 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 I he 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 Forms can be downloaded from httn//h2ocnrstate ncus/su/bmp torms Min Form SW401-Low Density Form SW401-Curb Outlet System Form SW401-Off-Site System Form SW401-Wet Detention Basin Form SW401-Infiltration Basin Form SW401-Infiltration French Form SW401-Bioretention Cell Form SW401-Level Spreader Form SW401-Wetland Form SW401-Grassed Swale Form SW401-Sand Filter Form SW401-Permeable Pavement Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Wet Detention Basin Supplement Infiltration Basin Supplement Underground Infiltration Trench Supplement Bioretention Cell Supplement Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Constructed Wetland Supplement Grassed Swale Supplement Sand Filter Supplement Permeable Pavement Supplement Pn'm Q\All iJnI nz o7 na 13,,, 2 nrd VI • SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ) A complete package includes all of the items listed below The complete application package should be submitted to the appropriate DWQ Office (Appropriate office may be found by locating project on the interactive online map at hill-) //h2o.cnr slate nc us/siihmi malts htm) 1 Please indicate that you have provided the following required information by initialing in the space provided next to each item Is • Oi igiiml and one copy of the Stormwater Management Permit Application Form • Or iguial and om copy of the Deed Restrictions & Protective Covenants Form (if »pip requned as per Part IV above) • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP _ • Permit application processing fee of $505 (Express $4,000 for HD, $2,000 for LD) 46i'w� payable to NCDENR j t gt, IA11TO • Calculations & detailed narrative description of stormwater treatment/management • Copy of any applicable soils report • Two copies of plans and specifications (sealed, signed &dated), including ow - 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 (ex designing engineer or firm) Designated agent (individual or firm) Houston and Associates. P A Mailing Address Post Office Box 627 City Shallotte State NC Zip 28459 Phone (910 ) 754-6324 Fax (910 ) 754-2121 Email tayhouston@atmc net VIII APPLICANT'S CERTIFICATION I, (print or type name of person listed in General Infointation, item 2) Brian McCall 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 regmreme Signature nts of 15A NCAC 2H 1000 Q " / Date U �9 8- P„rm IM111-1ni rA9'inR n'�, a..ra HOUSTON and ASSOCIATES, P.A. Consulting Engineers SHALLOTTE NORTH CAROLINA 28459 Telephone (910) 754 6324 Facsimile (910) 754-2121 117 Pine Street Post Office Box 627 Friday, November 7, 2008 1:ZF1 Ms Aisha H Lau, Environmental Engineer Division of Water Quality I NwV 0 7 Z006 NC Department of Environment and Natural Resources 127 Cardinal Drive Extension $Y,o- Wilmington, North Carolina ,28405 Subject Family Entertainment Center - East Coast Entertainment of Shallotte, LLC , Stormwater Permit SW8 080527 - Revised Sheet 1 of 5 Dear Ms Lau Per our recent telephone conversation, we have revised Sheet 1 of 5 of the plans to be more consistent with the other plan sheets The outlet structure was shown at an elevation 0 5 feet lower than the detail of the outlet structure which stated the correct elevation All elevations stated in the plans should now match Enclosed are two complete copies of the revised plans for your use We look forward to the immediate issuance of this permit , We appreciate your attention and assistance im this matter Should you have any comments or require any additional information, please do not hesitate to contact our office at your convenience S Enclosures Sincerely, Houston, P E on, and Associates, P A pc Mr Brian McCall, East Coast Entertainment of Shallotte, LLC Dr John D Ward File, 07-1084 (Family Entertainment Center - SW) Telephone (910) 754 6324 Facsimile (910) 754 2121 HOUSTON and ASSOCIATES, P A. Consulting Engineers SHALLOTTE NORTH CAROLINA 28459 Transmittal To % 4 Lat- Er\f 117 Pine Street Post Office Box 627 Date: q 3D .1oo-1�s From- no.q }oua4z-,-, Houston and Associates, P A Consulting Engineers SHALLOTrE, NC 28459 PROJECT Cam�L.� ��ler�atwn1en��1�BJECT c1 Copies c lL-e, + tk Acu Shca to- l�rY1'�Qr �rp)(eG}' RFCEIVEl3 BY: COMMENTS. PC FILE LOS -IosiA OCT 0 1 2008 Re SW8 080527 Farmly Entertainment Center of Shallotte - Request Subject Re SW8 080527 Family Entertainment Center of Shallotte - Request for Extension From Aisha Lau <Aisha Lau@ncmail net> Date Mon, 29 Sep 2008 13 55 39 -0400 To Jay Houston <jayhouston@atmc net> CC Brian McCall <bm80allstar@aol com> Hello Jay, Attached you should find a copy of a Word file with the modified deed restrictions Prior to talking to you last week I didn't realize that a manipulatable format wasn't available online Take care, Aisha Jay Houston wrote Hi Aisha - 1 have tried in vain to "unlock" the High Density Commercial Subdivisions Deed Restrictions and Protective Covenants form you have requested to be modified to include a future development impervious area figure This was contained in your September 15, 2008 Request for Additional Information letter Please allow us some additional time to resolve this issue If you could, could you please email me back a password to unlock the Word document so that I can modify it or send me an unlocked version? I have Mr McCall available today only to get this resigned Otherwise, I will be forced to have it written in by hand and have him initial it Thank you Jay Jay R Houston P E Houston and Associates P A Consulting Engineers Post Office Box 627 117 Pine Street Shallotte North Carolina 28459 (910)754-6324 This e-mail may be privileged and/or confidential and the sender does not waive any related rights and obligations Any distribution use or copying of this a mail or the information it contains by other than an intended recipient is unauthorized If you received this a mail in error please advise me (by return e-mail or otherwise) immediately Aisha Horak Lau Environmental Engineer State Stormwater Program NC Division of Water Quality 127 Cardinal Drive Ext Wilmington NC 28405 Phone (910) 796-7331 Fax (910) 350-2004 "Don't worry Be happy " - Bobby McFerrin 1 of 2 9/29/2008 1 57 PM Michael F Easley Governor William G Ross Jr Secretary North Carolina Department of Environment and Natural Resources September 15, 2008 Mr Brian McCall East Coast Entertainment 205 8th Avenue North North Myrtle Beach, SC 29582 Subject Request for Additional Information Stormwater Project No SW8 080527 Family Entertainment Center of Shallotte Brunswick County Dear Mr McCall Coleen H Sullins Director Division of Water Quality Ih�Z" " Vz A"m 91t4_og The Wilmington Regional Office received additional information regarding a State Stormwater Management Permit Application for Family Entertainment Center of Shallotte on August 28, 2008 A preliminary review of that information has determined that the application is not complete The following information is needed to continue the stormwater review The Seasonal High Water Table (SHWT) in the vicinity of the pond needs to be clearly documented on either the plans or the Wet Detention Basin Supplement I have enclosed a copy of the appropriate page of the provided supplement for this information to be added (FYI -The most recent version of the wet detention basin supplement has a line for this information included in it When completing stormwater permit applications in the future please download the most current application forms from the Division's website since changes occur to the forms periodically ) Enclosed is a copy of the provided deed restriction language for this project Please delete the highlighted section and add in its place, "Future development to the current drainage area of the permitted pond will be limited to 135,545 sf " Please note that this request for additional information is in response to a preliminary review The requested information should be received in this Office prior to September 29, 2008, or the application will be returned as incomplete The return of a project will necessitate resubmittal of all required items, including the application fee If you need additional time to submit the information, please mail, email or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter The request must indicate the date by which you expect to submit the required information The Division is allowed 90 days from the receipt of a completed application to issue the permit The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215 1 and is subject to enforcement action pursuant to NCGS 143-215 6A 127 Cardinal Drive Extension Wilmington, North Carolina 28405 3845 One Phone 910 796 72151 Fax 910 350 20041 Internet h2o enr state nc us NorthCarohna An Equal Opportunity/Affirmative Action Employer — 50% Recycledl10% Post Consumer Paper Naturally East Coast Entertainment September 15, 2008 Stormwater Application No SW8080527 Also, since the area listed in the "Off -site" section of the supplement, 135,545 sf is owned by the same entity I have moved it up to the "Other on -site" section with "- future" added afterward If the current owner will not actually be developing this future allocated area please let me know so that I will leave it as is For future reference please be aware that the average head used to calculate the discharge rate and drawdown time from the pond should be calculated based on Section 3 5 2 of the 2007 BMP manual The September 28, 2007 version of the BMP Manual changed the average head equation from H/2 to H/3 I noticed that the enclosed calculations utilized H/2, but since the pond was oversized it still discharged within an acceptable amount of time when the H/3 head was utilized, making resubmitted calculations unnecessary for this submittal Please reference the State assigned project number on all correspondence Any original documents that need to be revised have been sent to the engineer or agent All original documents must be returned or new originals must be provided Copies are not acceptable If you have any questions concerning this matter please feel free to call me at (910) 796-7331 or email me at aisha lau@ncmail net Sincerely, Aisha H Lau Environmental Engineer ENB/ahl S\WQS\STORMWATER\ADDINFO\2008\080527 sep08 Enclosures Copies of Deed Restrictions and Wet Detention Basin Supplement CC Mr Jay Houston, P E w/ enclosures Wilmington Regional Office Page 2 of 2 HOUSTON and ASSOCIATES, P.A. Consulting Engineers SHALLOTTE NORTH CAROLINA 28459 Telephone (910) 754 6324 Facsimile (910) 754 2121 117 Pine Street Post Office Box 627' Wednesday, August 27, 2008 Ms Aisha H Lau, Environmental Engineer `C C Division of Water guality NC Department of Environment and Natural Resources QUG 8� 127 Cardinal Drive Extension ?QOg Wilmington, North Carolina 28405 Subject Family Entertainment Center - East Coast Entertainment of ' Shallotte, LLC Stormwater Permit SW8 080527 - Additional Information Submittal Dear Ms Lau In response to your additional information letter of July 30, 2008: received on August 4, 2008, we are submitting for your review and approval two (2) copies each of the revised stormwater plans (Sheet 3 of 5 was revised), revised stormwater application, sheet 3 of 4 (Basin Diagram) of the- Pond Supplement, and a soils report that was recently completed All other documents, including the stormwater calculations, remain unchanged With regard to the numbered comments in your letter, we offer the following responses in the same order 1 Please find the revised and executed application included within this submittal 2 Per comment 1 above, the Mr McCall's title is included on the application 3 This project is NOT under a common plan of development at this time We are not sure of how it "came to your attention" but this is simply not true It is true that this project will eventually be surrounded by other commercial interests and/or projects but those interests or projects have not been defined at this time , There have been several conceptual master plans prepared but we are not aware of any final masterplan and none has been submitted to the Town of Shallotte for approval The submittal and approval of a masterplan by the Town of Shallotte must precede any further development on this property since the town has determined that any further building requires such,a plan The present project, The Family Entertainment Center of Shallotte (FEC),, is the only definitive project that exists in reality at this point in time and therefore does not qualify as being under a common plan of development under the regulation 15A NCAC 2H 1003(b) This regulation was created to prevent owners and developers from "piecemealmg" a large tract of, land into smaller projects to avoid compliance with the regulations This is not the case here Ms Lau August 27, 2008 Page Two Family Entertainment Center Stormwater Permit SW8 080527 4 The proposed stormwater pond has been designed with excess capacity in it and was maximized in the area where it is sited The pond will treat all pervious and impervious surfaces draining into it as designed At a future time, when a development masterplan is finalized, submitted, and approved by the Town of Shallotte, a stormwater masterplan will be developed Future areas draining into this pond will be justified by stormwater calculations and submitted for offsite permit(s) up to the impervious surface area which can be treated in this pond Since it is unknown at this time, as to what the future uses are and configuration of the impervious surfaces will be, it is impossible to determine where the project boundaries (for stormwater treatment purposes) for this pond will be It is possible to grade future projects and to,collect stormwater and pipe it into this system as needed Simply to "assume" some arbitrary percentage at build -out is not *fair, not realistic, and does not apply efficient design principles A general statement of how the entire tract boundary will likely be approached for stormwater management can be described as follows - During the preliminary planning stages, we have identified several existing large ponds on property owned by Dr Ward on the opposite side of NC130 which will be used for a portion of the stormwater management program Additionally, our plan is to encourage LID techniques and the whole gamut of BMP techniques, including the construction of additional stormwater ponds, where needed This can -only -be -quantified= and--developed-further_when_the-overall masterplan-has-been-completed tsubmftted-and--a`ppioved-y-the Town-of-Shallotte 5 We have revised Sheet 3 of 5 of the plans to reflect the correct elevations as reflected on the application supplements and in the calculations We lowered the first rectangular weir (control of the post- contstruction 1- year, 24-hour storm to preconstruction runoff flow rate required by local ordinances) to an elevation of 7 0 feet 6 The soils report is attached 7 All impervious surface drams to the stormwater pond Please note the spot elevations on Sheet 1 of 5 of the plans along the gutter and the grades of the top of the drop inlet grates indicating that stormwater runoff will easily drain into the drop inlets 8 We have attached only the revised sheets and pages Also enclosed is the soils report which indicates the same information previously provided on another soils report but which did not specifically address the Seasonal High Water Table (SHWT) This report does address the SHWT and it is clear that the proposed stormwater `pond will not adversely affect adjacent wetlands while operating as designed without adverse influence from the SHWT Ms. Lau Page Three Family Entertainment Center August 27, 2008 Stormwater Permit SW8 080527 We appreciate your attention and assistance in this matter Should you have any comments or require any additional information, please do not hesitate to contact our office at your convenience Sincerely, Houston, P E Houston and Associates, P A Enclosures pc Mr Brian McCall, East Coast Entertainment of Shallotte - Dr John D Ward File, 07-1084 (Family Entertainment Center - SW) r r , Telephone (910) 754 6324 Facsimile (910) 754-2121 HOUSTON and ASSOCIATES, P.A. Consulting Engineers SHALLOTTE NORTH CAROLINA 28459 117 Pine Street Post Office Box 627 Wednesday, August 27, 2008 Ms. Aisha H. Lau, Environmental Engineer Division of Water Quality NC Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington, North Carolina 28405 Subject Family Entertainment Center - East Coast Entertainment of Shallotte, LLC Stormwater Permit SW8 080527 - Additional Information Submittal Dear Ms Lau In response to your additional information letter of July 30, 2008, received on August 4, 2008, we are submitting for your review and approval two (2) copies each of the revised stormwater plans (Sheet 3 of 5 was revised), revised stormwater application, sheet 3 of 4 (Basin Diagram) of the Pond Supplement, and a soils report that was recently completed All other documents, including the stormwater calculations, remain unchanged With regard to the numbered comments in your letter, we offer the following responses in the same order 1 Please find the revised and executed application included within this submittal 2 Per comment 1 above, the Mr McCall's title is included on the application 3 This project is NOT under a common plan of development at this time We are not sure of how it "came to your attention" but this is supply not true It is true that this project will eventually be surrounded by other commercial interests and/or projects but those interests or projects have not been defined at this time There have been several conceptual master plans prepared but we are not aware of any final masterplan and none has been submitted to the Town of Shallotte for approval The submittal and approval of a masterplan by the Town of Shallotte must precede any further development on this property since the town has determined that any further building requires such a plan The present project, The Family Entertainment Center of Shallotte (FEC), is the only definitive project that exists in reality at this point in time and therefore, does not qualify as being under a common plan of development under the regulation 15A NCAC 2H 1003(b) This regulation was created to prevent owners and developers from "piecemealing" a large tract of land into smaller projects to avoid compliance with the regulations This is not the case here Ms Lau r August 27, 2008 Page Two Family Entertainment Center Stormwater Permit SW8 080527 4 The proposed stormwater pond has been designed with excess capacity in it and was maximized in the area where it is sited The pond will treat all pervious and impervious surfaces draining into it as designed At a future time, when a development masterplan is finalized, submitted, and approved by the Town of Shallotte, a stormwater masterplan will be developed Future areas draining into this pond will be justified by stormwater calculations and submitted for offsite permit(s) up to the impervious surface area which can be treated in this pond Since it is unknown at this time, as to what the future uses are and configuration of the impervious surfaces will be, it is impossible to determine where the project boundaries (for stormwater treatment purposes) for this pond will be It is possible to grade future projects and to collect stormwater and pipe it into this system as needed Simply to "assume" some arbitrary percentage at build -out is not fair, not realistic, and does not apply efficient design principles A general statement of how the entire tract boundary will likely be approached for stormwater management can be described as follows During the preliminary planning stages, we have identified several existing large ponds on property owned by Dr Ward on the opposite side of NC130 which will be used for a portion of the stormwater management program Additionally, our plan is to encourage LID techniques and the whole gamut of BMP techniques, including the construction of additional stormwater ponds, where needed This can only be quantified and developed further when the overall masterplan has been completed, submitted and approved y the Town of Shallotte 5 We have revised Sheet 3 of 5 of the plans to reflect the correct elevations as reflected on the application supplements and in the calculations We lowered the first rectangular weir (control of the post-contstruction 1- year, 24-hour storm to preconstruction runoff flow rate required by local ordinances) to an elevation of 7 0 feet 6 The soils report is attached 7 All impervious surface drams to the stormwater pond Please note the spot elevations on Sheet 1 of 5 of the plans along the gutter and the grades of the top of the drop inlet grates indicating that stormwater runoff will easily drain into the drop inlets 8 We have attached only the revised sheets and pages Also enclosed is the soils report which indicates the same information previously provided on another soils report but which did not specifically address the Seasonal High Water Table (SHWT) This report does address the SHWT and it is clear that the proposed stormwater pond will not adversely affect adjacent wetlands while operating as designed without adverse influence from the SHWT Ms. Lau Page Three Family Entertainment Center August 27, 2008 Stormwater Permit SW8 080527 We appreciate your attention and assistance in this matter Should you have any comments or require any additional information, please do not hesitate to contact our office at your convenience Sincerely, JHWouston,�P E Houston and Associates, P A Enclosures pc Mr Brian McCall, East Coast Entertainment of Shallotte Dr John D Ward File, 07-1084 (Family Entertainment Center - SW) PROTOCOL SAMPLING SERVICE, INC. iuuna attr % F� P O Box 31133, Raleigh, NC 27622 • (919) 210-6547 / Fax (919) 326-0738 CERTIFIED cwu August 26, 2008 Mr Jay R Houston, P E Houston & Associates, P A Consulting Engineers Post Office Box 627 Shallotte, North Carolina 28459 Re Storm Water Retention Ponds Soil Investigation Proposed Family Entertainment Center Shallotte, Brunswick County, North Carolina Protocol Project 408-48 Dear Mr Houston The following Soil Investigation Is submitted to assist in a site assessment for a proposed storm water retention pond located adjacent to NC Highway 130, Shallotte, Brunswick County, North Carolina SITE HISTORY AND PHYSICAL CHARACTERISTICS The tract is currently developed and is adjacent to a Lowes Building Supply Warehouse and directly adjacent to Mulberry Branch west of Shallotte, North Carolina Protocol Sampling Service, Inc of Raleigh, North Carolina was hired to perform a cursory investigation to identify the depth to seasonal high water table and if any restrictive layers are present in and around the storm water pond currently under construction Surface elevations range from 20 to 4 feet msl across the study area SOIL INVESTIGATION The field survey was conducted on August 13, 2008 Two (2) soil borings were advanced to 84 inches below land surface (bls) with a hand auger outside, inside and down gradient of the construction area Sod color was determined with a Munsell Sod Color Chart The presence of fill or other disturbances, the depth to the seasonal high water table, soil structure and consistence were noted All boring locations were marked in the field using the Site Plan as a guide The borings were also checked for reduced colors, an anaerobic smell or obvious soil wetness (typical Sod Profiles — attached) FINDINGS • The subject property contains sod belonging to the Marvyn series This series is a Kanhapludult or a sod in which throughout one or more horizons with a thickness of 18mm within 75 min of the mineral sod surface a fine earth fraction containing 30% or more particles 0 02 to 2 0 mm in diameter is present A sandy loam and loamy sand aquifer was found underneath the clay (Bt) horizons in all three borings The sod was found to have an apparent depth Lcseasonal high water -table of 30:inches bls in both bormgsD The adjacent ditches have altered the depth to the seasonal high water table to below this depth which was evidenced by a static water table depth below 84-inches bls in the soil borings outside and inside of the construction area The static water table was found at an elevation of approximately 1 0' msl between the constructed pond and the floodplam of the adjacent creek The Bt layers would be considered restrictive, but since they have been removed dunitg-th_ po�� construction the static water table should equilibrate with the loamy sand layer tound at 45-mches bls or b even deeper DIRECT PUSH TECHNOLOGY (EARTHPROBE 200) • MONITOR WELL INSTALLATION • SOIL MAPPING WETLAND DELINEATION • NC LICENSED WELL CONTRACTOR • NC LICENSED SOIL SCIENTIST • NGWA CERTIFIED WELL DRILLER • The estimated infiltration rate through the subsurface sand is expected to exceed 1/2 mch/hour Recommendations • Since the restrictive clay layers have been removed during pond construction, lateral flow to the line sink (Mulberry Branch) as well as the underlying sands has been created which will provide proper drainage of the constructed pond and should keep the water level well below the seasonal high water table depth The findings and recommendations presented herein are based on the site conditions observed during performance of the field survey on August 13, 2008 Please call me at (919) 210-6547 if you have any questions or need further assistance Sincerely, Protocol Sampling Service, Inc a David E Meyer, L S S President SP 1044 ��:; �i Ili *7. --1 I I I I I I I f LOwE$ HOME CENTEHO JN0 / DO I. TE Z .np CABINET 22 PAOE 2"2 TAF.1 IN Alp ZONE HO I i i 1 I I OJECT RE na� Fi V. VICINITY MAP Ni9 ,l Soil Profile Description Family Entertainment Center - Profile 1 A 0 to 4 inches, brown (I OYR 5/3) loamy fine sand, granular, friable BE 4 to 13 inches, yellowish brown (1 OYR 5/4) loamy sand, granular, friable E' 13-16 inches, brownish yellow (I OYR 6/6) loamy coarse sand, granular, friable Btl 16-30 inches, brownish yellow (1 OYR 6/6) sandy clay loam, subangular blocky, friable with many, distinct red (2 5YR 4/8) concentrations BC 30-45 inches, brownish yellow (1 OYR 6/6) sandy clay subangular blocky, firm with many, distinct (2 5YR 4/8) concentrations and many, prominent gray (1 OYR 6/1) depletions C 45-84 inches, multi -colored sandy loam and loamy sand subangular blocky, friable Sol] Series Marvyn Landscape Coastal Plain Landform Marine terrace Parent Material Marine sediments Drainage Class Moderately Well Particle Size Class Loamy Temperature Regime thermic Subgroup Classification Typic Kanhapludults Examination Method auger boring Date August 13, 2008 Weather Overcast with light rain Investigator David Meyer Official Series Description - MARVYN Series Page I of 3 I LOCATION MARVYN AL+NC Established Series Rev RBM-PGM 03/97 MARVYN SERIES The Marvyn series consists of deep, well drained, moderately permeable soils that formed in loamy marine sediments on Coastal Plain uplands Slope ranges from 0 to 15 percent TAXONOMIC CLASS Fine -loamy, kaolinitic, thermic Typic Kanhapludults TYPICAL PEDON Marvyn loamy sand, on a smooth convex 2 percent slope, in a cultivated field (Colors are for moist soil ) Ap--O to 7 inches, dark grayish brown (I OYR 4/2) loamy sand, weak fine granular structure, very friable, many fine roots, 5 percent rounded gravel less than one inch in diameter, medium acid, abrupt smooth boundary (5 to 12 inches thick) BtI--7 to 15 inches, yellowish brown (I OYR 5/6) sandy loam, weak medium subangular blocky structure, very friable, common fine roots, sand grains bridged and coated with clay, strongly acid, clear smooth boundary Bt2--15 to 30 inches, strong brown (7 5YR 5/6) sandy clay loam, weak medium subangular blocky structure, friable, few fine roots, thin patchy clay films on faces of peds, strongly acid, clear smooth boundary Bt3--30 to 44 inches, brownish yellow (1 OYR 6/6) sandy clay, many medium prominent red (2 5YR 4/8) mottles, moderate medium subangular blocky structure, friable, few fine roots, thin patchy clay films on faces of peds, very strongly acid, clear smooth boundary (Combined thickness of the Bt horizon is 25 to 50 inches) BC-44 to 53 inches, yellowish red (5YR 5/8) sandy clay, common medium prominent brownish yellow (1 OYR 6/6) mottles in discontinuous bands, weak medium subangular blocky structure, friable, few fine roots, thin patchy clay films on faces of peds, few fine flakes of mica, very strongly acid, abrupt smooth boundary (4 to 12 inches thick) C--53 to 60 inches, mottled red (2 5YR 4/8, 5/8), light olive brown (2 5Y 5/6) and light gray (10YR 7/2), average texture is sandy clay loam, red and brown parts are sandy loam and sandy clay loam, gray parts are clay and sandy clay, colors and textures are in bands about one centimeter thick, massive, grading to weak platy, friable, few to common flakes of nuca, very strongly acid, abrupt smooth boundary (5 to 15 inches thick) 2C--60 to 72 inches, reddish yellow (7 5YR 6/8, 7/8) sandy loam, common medium prominent red (2 5YR 4/8) mottles, massive, friable, few pockets of white clay, very friable, common to many flakes of mica, very strongly acid http //www2 ftw nres usda gov/osd/dat/M/MARVYN html 8/20/2008 Official Series Description - MARVYN Series Page 2 of 3 TYPE LOCATION Lee County, Alabama, 2 5 miles west of Marvyn on U S Highway 80, 375 feet southwest of the northeast corner of the SW IASE1/4 sec 23, T 17 N , R 26 E RANGE IN CHARACTERISTICS Solum thickness ranges from 40 to 60 inches The soil is medium acid to very strongly acid throughout, except where lime has been added There are few to common flakes of nuca in the lower part of the Bt horizon and few to many in the BC and C horizons The Ap or A horizon has hue of 1 OYR, value of 3 to 5, and chroma of 2 or 3 It is loamy sand, loamy fine sand, sandy loam, or fine sandy loam The E horizon, present in some pedons, has hue of I OYR, value of 5 or 6, and chroma 3 or 4 It is 3 to 8 inches thick and is loamy sand, loamy fine sand, sandy loam, or fine sandy loam The BA or BE horizon, present in some pedons, has hue of 7 5YR or 1 OYR, value of 4 or 5, and chroma of 4 to 8 Texture is sandy loam or sandy clay loam The Bt horizon has hue of 7 5YR or 1 OYR, value of 5 or 6, and chroma of 4 to 8 It is distinctly or prominently mottled with yellow, brown, or red in the lower part Texture is dominantly sandy loam or sandy clay loam in the upper part, but ranges to sandy clay in the lower part of the Bt horizon The upper 20 inches of the kandic horizon averages less than 20 percent silt the BC horizon has hue 1 OYR to 5YR, value of 5 or 6, and chroma of 4 to 8 , or it has no dominant matrix color and is mottled in shades of yellow, brown, red, and gray Texture is mainly sandy clay or sandy clay loam but ranges to sandy loam and is often stratified The C horizon is generally thinly stratified and has no dominant matrix color Strata range in color from red to gray and in texture from sandy loam to clay The coarser textured strata are generally reddish or brownish in color, while the finer textured strata are generally grayish in color The 2C horizon, where present, has yellow, red, brown, or white colors It is sandy loam or loamy sand COMPETING SERIES These include the Cowarts and Springhill series in the same family and the Apison, Cahaba, Durham, Empona, Euharlee, Granville, Hartsells, Kemnsville, Linker, Nauvoo, Pirum, Smithdale, Spadra, Stnn tg own, Suffolk, and Vaucluse series in similar farrulies The Cowarts series have a solum thickness of less than 40 inches The Cahaba, Smithdale, and Springhill series have hue of 5YR or redder throughout the Bt horizon The Apison, Hartsells, Linker, Nauvoo, and Pirum soils are underlain by bedrock at a depth of less than 60 inches Durham and Granville soils have saprohte within 40 to 60 inches of the surface Emporia soils have mottles with chroma of 2 or less between a depth of 30 and 50 inches Euharlee soils have more than 30 percent silt in the control section Kempsville soils have subsoil layers in which 20 to 60 percent of the matrix is brittle Spadra soils have Bt horizons with hue redder than 7 5YR or have color value less than 5 Suffolk soils have moderately rapidly permeable to rapidly permeable C horizons Stringtown soils contain fragments or strata of shale and sandstone in the BC and C horizons Vaucluse soils have a dense, brittle horizon within 36 inches of the surface GEOGRAPHIC SETTING Marvyn soils are on nearly level to strongly sloping topography of the Coastal Plain uplands Dominant slope gradients are 2 to 5 percent but slopes range from 0 to 15 percent The soil formed in marine sediments Mean annual temperature near the type location is 65 degrees F, and mean annual precipitation is 54 inches GEOGRAPHICALLY ASSOCIATED SOILS These are the competing Cowarts Senes and the http //www2 ftw nres usda gov/osd/daVWMARVYN html 8/20/2008 Official Series Description - MARV YN Series Page 3 of 3 Marlboro, Rumford, Uchee, and Wagram series on similar positions as the Marvyn soils and the Wickham series on adjacent stream terraces Marlboro soils have a clayey particle -size control section Rumford soils have a coarse -loamy particle -size control section Uchee and Wagram soils have a sandy epipedon 20 to 40 inches thick Wickham soils have mixed mineralogy DRAINAGE AND PERMEABILITY Well dramed, slow to medium runoff, permeability is moderate in the subsoil and moderate to moderately slow in the substratum USE AND VEGETATION Mostly cleared and used for the production of row crops, mainly cotton Small areas are in pasture or in forests of mixed hardwoods and pines DISTRIBUTION AND EXTENT Coastal Plain of Alabama, Georgia, North Carolina and South Carolina It is moderately extensive MLRA OFFICE RESPONSIBLE Auburn, Alabama SERIES ESTABLISHED Lee County, Alabama, 1979 REMARKS This revision (6/89) changes the classification from Typic Hapludults to Typic Kanhapludults in recognition of the low activity clay of the kandic horizon Diagnostic horizons and features recognized in this pedon are Ochric epipedon - the zone from the surface of the soil to a depth of approximately 7 inches (Ap horizon) Kandic horizon - the zone from approximately 7 to 53 inches (Btl, Bt2, 130, and BC horizons) ADDITIONAL DATA Laboratory data for typifying pedon from Auburn University, Sample Number S73AL-041-3-(1-7), and from the Alabama Highway Department S73AL-041-3-(1, 4, 7) National Cooperative Soil Survey USA http //www2 ftw nres usda gov/osd/dat/M/MARVYN html 8/20/2008 Michael F Easley Governor William G Ross Jr Secretary North Carolina Department of Environment and Natural Resources Coleen H Sullins Director Division of Water Quality July 30, 2008 Mr Brian McCall East Coast Entertainment 205 8th Avenue North North Myrtle Beach, SC 29582 Subject Request for Additional Information Stormwater Project No SW8 080527 Family Entertainment Center of Shallotte Brunswick County Dear Mr McCall The Wilmington Regional Office received a State Stormwater Management Permit Application for Family Entertainment Center of Shallotte on May 30, 2008 A preliminary review of that information has determined that the application is not complete The following information is needed to continue the stormwater review The signatures on the application and associated documents, such as O&M and supplements, must be from either a member of a member -managed LLC, or from a manager of a manager -managed LLC, per NCAC 2H 1003(e) To ensure the applicant is a member or manager of the LLC, they must be either registered with the NC Secretary of State or official supporting documentation from the LLC must be provided If signatures by other persons are desired, then a signed letter of authorization from the applicant (member or manager) must be provided which includes the name, title, mailing address and phone number of the applicant The owner found on the NC Secretary of State's website under East Coast Entertainment did not list yourself in its articles of incorporation However, there was a LLC found with a name similar to that on the application with you listed as a member organizer Please correct the application accordingly (East Coast Entertainment of Shallotte, LLC) 2 Please provide your title within the LLC in section 12 of the application 3 Under regulation 15A NCAC 2H 1003(b) "Projects under a common plan of development shall be considered as a single project and shall require stormwater management in accordance with this Section " It has come to my attention that this development is a portion of a development that is being planned for a contiguous 119 acre tract of land Please provide a master plan submitted for the entire development so that this portion can be viewed in context with its surroundings 127 Cardinal Drive Extension Wilmington North Carolina 28405 3845 Phone 910 796 7215 / Fax 910 350 2004 / Internet h2o enr state nc us An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper NorthCarohna ;Vaturallry East Coast Entertainment July 30, 2008 Stormwater Application No SW8080527 4 Under regulation 15A NCAC 2H 1008(c)(1) "The size of the system must take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage " Since the 301,000 sf of offsite area draining to the pond is zoned similarly, it can be assumed to have the same percentage of build -out —91 %), as the proposed development Please provide at least one of the following to account for the discrepancy of the actual potential build -out for the facility versus what was shown in this application, a Account for all of the potential build -out in all of the affected application materials b Divert some or all of the water around the project and account for it appropriately in all affected application materials c Provide recorded deed restrictions showing that the adjacent offsite parcels have been deed restricted appropriately 5 Please ensure that the temporary pool elevation is shown consistently in all application materials The temporary pool is shown at 7 0 msl in both the supplement and calculations, but shown at 7 2 and 6 5 (Storage Pool) on the plans 6 A soils report for all engineered systems is required The report should contain the estimated Seasonal High Water Table (SHWT) elevation at each proposed BMP location The soils report provided with this application showed no information at the location of the proposed stormwater pond The SHWT must be at or below the proposed permanent pool elevation to assure that the necessary volume will be available above the permanent pool 7 Please ensure that all BUA is draining to the treatment system A couple of corners of the project, one of which shows dumpsters on it, don't appear to be graded to drain to the treatment system 8 Please note that a revision to one number may have a domino effect on other numbers, which may require revision of the applications, calculations, supplements, plans, details, and associated documentation Please verify all numbers are correct to ensure consistency in the application documents Please note that this request for additional information is in response to a preliminary review The requested information should be received in this Office prior to August 27, 2008, or the application will be returned as incomplete The return of a project will necessitate resubmittal of all required items, including the application fee If you need additional time to submit the information, please mail, email or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter The request must indicate the date by which you expect to submit the required information The Division is allowed 90 days from the receipt of a completed application to issue the permit Page 2 of 3 East Coast Entertainment July 30, 2008 Stormwater Application No SW8080527 The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215 1 and is subject to enforcement action pursuant to NCGS 143-215 6A Please reference the State assigned project number on all correspondence Any original documents that need to be revised have been sent to the engineer or agent All original documents must be returned or new originals must be provided Copies are not acceptable If you have any questions concerning this matter please feel free to call me at (910) 796-7215 or email me at aisha lau@ncmail net Sincerely, Aisha H Lau Environmental Engineer ENB/ahl S\WQS\STORMWATER\ADDINFO\2008\080527 ju108 CC Mr Jay Houston, P E Wilmington Regional Office Page 3 of 3 SOSID 1054371 Date Filed 7/18/2008 11 12 00 AM State of North Carolina Elamn F Marshall North Carolina Secretary of State Department of the Secretary of Stat C200818900460 Limited Liability Company ARTICLES OF ORGANIZATION Pursuant to §57C-2-20 of the General Statutes of North Carolina, the undersigned does hereby submit these Articles of Organization for the purpose of forming a limited liability company The name of the limited liability company is En a r 6"s r •f S/,.t//, vre, 6GG If the limited liability company is to dissolve by a specific date, the latest date on which the limited liability company is to dissolve (If no date for dissolution is specified, there shall be no limit on the duration of the limited liability company) The name and address of each person executing these articles of organization is as follows (State whether each person is executing these articles oforganization in the capacity ofa member, organizer or both Note This document must be signed by all persons listed here) The street address and county of the initial registered office of the limited liability company is Number and Street City, State, Zip Code ✓Slate. 1 4T/t NG 2milty /J/ynlsa ICk. The mailing address, if different from the street address, of the initial registered office is 40 9.X zti!, i4,/1,>� , Nc 7-"S9 6 The name of the initial registered agent is Principal office information (Select either a orb) a ❑ The limited liability company has a principal office The street address and county of the principal Kai office of the limited liability company is Number and Street .3y 9 1-14irrolle, City, State, Zip Code ,S/.//orle , NL 7-8'Y74 County aN1i✓icK The mailing address, if different from the street address, of the principal office of the corporation is 37-S E l{,'Sr (ems.. Ss/e b ❑ The limited liability company does not have a principal office Checkoneof the following V (1) Member -managed LLC all members by virtue of their status as members shall be managers of this limited liability company (u) Manager -managed LLC except as provided by N C G S Section 57C-3-20(a), the members of this limited liability company shall not be managers by virtue of their status as members Any other provisions which the limited liability company elects to include are attached 10 These articles will be effective uvon filme unless a date and/or time is specified This is the Lirday of f� , 2008 ,pp Signature RIER"1'FR /:r,4A/'�c ✓ ORGANIZER Type or Print Name and Title NOTES I Filing fee n S125 Thu document must be filed with the Secretary of State. CORPORATIONS DIVISION P 0 Box 29622 RALEIGH, NC 27626-0622 HOUSTON and ASSOCIATES, P.A. Consulting Engineers ` 1 I' SHALLOTTE NORTH CAROLINA 28459 `v Teivid Telephone (910) 754 6324,,,yyy 117 Pine Street Facsimile (910) 754 2121 Post Office Box 627 Wednesday, May 28, 2008 Ms L><nda Lewis, Environmental Engineer III Division of Water Quality NC Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington. North Carolina 28405 PROJ # MAY 3 0 2008 DWQ Subject Family Entertainment Center - East Coast Entertainment of Shallotte, LLC Stormwater Permit - Additional Submittal Dear Ms. Lewis In response to your email message of May 20, 2008, we are submitting for your review and approval two (2) copies each of the revised stormwater plans, revised stormwater calculations, revised stormwater application, proposed deed restriction sheet, and supplement sheets You already have a check in the amount of $505 00 to cover the cost of the application fee With regard to the numbered comments in your email, we offer the following in the same order 1 The 3/27/2008 application has been used and we have presented the information as you requested into onsite and offsite drainage areas 2 We normally use the BMP Manual to design ponds and the manual still lists the design storm as 1 5" of runoff We have revised the calculations and have made adjustments to the plans to reflect the 1 5" of runoff per Session Law 2006-246 3 Attached are two pages from a soils report done for the project site in late December, 2007 It is clear that the proposed permanent pool level Is well above the SHWT and will actually recharge the groundwater table in the vicinity of the pond The wetland finger that extends from Mulberry Branch into the project site is surrounded on three sides by a proposed bulkhead to protect the wetlands from the adjacent proposed fill This bulkhead will create a basin effect whereby rainfall will be "trapped" by the bulkhead The sheet piling for the bulkhead will extend approximately 6' to 8' below the existing ground surface level which will aid in preventing exfiltratron out of the wetland finger Ms Lewis Page Two Family Entertainment Center May 28, 2008 Stormwater Permit We appreciate your attention and assistance in this matter Should you have any comments or require any additional information, please do not hesitate to contact our office at your convenience Sincerely, Houston, P E Houston and Associates, P A Enclosures pc Mr Brian McCall, East Coast Entertainment of Shallotte Dr John D Ward File, 07-1084 (Family Entertainment Center - SW) NCDENR Storm Water Calculations for Family Entertainment Center Stormwater Pond #1 aj 'SEAL r: 818 _ C ;°,yGiNEOAR -\N Prepared By MDM Lois to(2 polo CONSULTING ENGINEERS Shallotte, North Carolina May 2008 Family Entertainment Center SW Pond May 2008 Stormwater Pond Design i Total Drainage Area OAcres 1N%W Impervious Area Buildings 1=5Q0' Acres Pavement/Sidewalk 'C' FUTURE/OFFSITE -4300 3�3500 Acres Acres Total 79300 Acres % Impervious 65 % SF 50:000 SF K19305- SF 1146J 2 _ SF 345431 SF Permanent Pool Average Depth _15 1 < — Average Depth Used % TSS Removal - 90% SA/DA ° `4 6S Required SA 24,712 SF Runoff J- T-15 Inches "Simple Method" Rv 064 Required Storage Volume 42,182 CF Actual Normal Pool SA 26t88 SF (@ 5 5' MSL) OK Depth of Storage 1 39 Feet USE° T' Feet SA @Storage Pool « 33,645SF (@ 7 0' MSL) Provided Storage 45,401 CIF OK Pond Elevations Sediment Storage Elevation -2 MSL Bottom Elev '�0 09d MSL Permanent Pool 5 5 MSL Storage Pool 700 MSL Emergency Spillway 1060 MSL Top of Pond 11 20 MSL PP Average Depth = PP Volume/PP Surface Area PP Average Depth = 509 ft USE -> 5 Family Entertainment Center Drawdown Calculations May 2008 Family Entertainment Center Stormwater Pond Drawdown AREAS (FTA2) ORIFICE DIA NUMBER OF ORIFICES INCHES 1 2 3 4 hX`e31 0 049 0 098 0 147 01961 TA INPUT 4AL POOL AREA = -S OF RAINFALL = 4 AREA = ZVIOUS AREA = 4AL POOL ELEVATION = CE AREA = AGE POOL AREA = INCREMENT OF ROUTING = CE COEF = RESULTS 0 617 ACRES INCHES 12 20 ACRES 7 93 ACRES 5 50 FEET 0 049 FEET' 07724 ACRES 2,0 HOURS F COEF (Rv) = 064 TION OF POOL AT STORAGE = 700 FEET 1L POOL AREA = 26,889 FEET' 4E OF RUNOFF FROM RAINFALL = 42,182 FEET' 4E OF STORAGE = 45,401 FEET' Orifice Sizma 1 5" Runoff Volume = 42,182 CF Q, 2-day h 0`24�4 cfs Q, 5-day s ;#p0'8i,�,'''cfs 3 0 inch Orifice Area = 7 06%inA2 0 049„ ftA2 Average Head = z"7,» ° .-"8 25tin v 0 69 ft Qactual= Ca(2gh)A(1/2)= 0.196 cfs Q 2-day >= Qactual>=,Q,S-day Orawdown,Time'=,$) i1`2 as d, ?-1`49f Da STORMWATER POND DATA SUMMARY Total Built -Upon Area (Ac ) 793 Total SW Drainage Area (Ac) 1220 Impervious Area Computed Runoff from 1 5" Rainfall (CF) 0 42,182 Provided Storage (CF) 45,401 712 Required Surface Area (SF) , 26 26,645 Surface Area of Pond @ Normal Pool (SF) Surface Area of Pond @ Storage Pool (SF) SW Storage Depth (Feet) 1 S Number of Orifices 1 3 Diameter of Orifice (Inch) 5 50 Elevation of Orifice Bottom (MSL) Storage Pool Elev (MSL) 700 249 Approx Time for Drawdown (Days) 10-Year Routed Flowrate (CFS) r"v' Flood Pool Elevation @ Q10 -2 1,932 10 267 12 199 1 2 300 11 363 13,663 05 2 491 11 923 14,414 0 2 689 12 489 15 178 1 3 107 13 639 16 746 2 3 554 14 818 18 372 3 4 028 16 026 20 054 4 4 531 17,265 21 796 5 5 062 18,533 23 595 26�88949" ' fivil 6 5,885 24 947 30 832 65 6 196 25 751 31 947 y � `s`6,b63-a i66 - 7 26,98Z" 33,645 75 7 077 27 951 35 028 8 7 503 29 067 36 570 85 7 874 30 067 37 941 9 8 228 31 048 39 276 10 8 957 33 033 41 990 11 9 714 35 050 44 764 11 2 9 867 352459 45 326 Volumes Volume Between FOREBAY MAIN POND Total Forebay and Main Pond (Ft- Ft) (CF) (CF) (CF) bottom ()1 2116 10815 12931 -1 -0 2495 11926 14421 0'S 19378 77555 96933 bottom -5 23988 100296 124284 <- 5 5 5 2600 10021 12621 5 5-6 2806 11625 14430 bottom -6 29394 121942 151335 <- bottom - 5 5 26588 110317 136905 < 5 5' - 7' , 9001 36400 '45401 <- 7 8' 7083 28025 35108 ' TOTAChWVOLUME`,� 136905 CF , TOTAL FOREBAY VOLUME 26588 CF % FOREBAY 1942 % — OK CALCULATE AVERAGE DEPTH = PP VOLUME/PP SURFACE AREA 509 FEET — USE 5 FEET Sediment Storage Elev PP Elevation SP Elevation Volume at Bottom of Shelf Volume at Top of Shelf PP Volume 1 S" Storage Volume STATE Drainage Area Site DATA -- 1 Year Storm rlandUseF ^ F-21 1, -(,.AC.„1 `E l�lc. ,.G Cr•A3 CI e V vy CNYywlt�Yrq PILET Inn',1... 0 000 095 0 98 0 Worts/Forest Good 531432 1220 03 366 70 854 0 0 00 04 000 89 0 Totals 531432 1220 366 854 c 0 30 I CN = 70 �+land Use��j-y'a"_XFI{-2 kh sY, q �AC4�y;5�,�± i'r yC = Ilc'#Ei75"ri l'rF -„x r< <C�AP_ -,. r _.1•CN- J"g"- CNxAg L+ l� h� rV f�":,-�A�aiS a�YPEi .nil 2F'iF'f ,r t� SWer"Pfi AI POST ImpeMous 345431 793 095 75335 98 777 Open Space Goad 186W 1 427 03 1 28M98623 74 316 0 000 04 0 80 0 Total 531432 1220 8 8r 3093 a = 0 72 I CN = 90 DA _531432 FT 2 ImpeMous Area rrir Di AC ImpeMous Area a 1°Oa !1jjI7 2 %Imp 0 AC Hydraulic Ixogth �_-I000 c PT Height Change' r.;115` -'^ iT WATERSHED SLOPE %, 1'5 „ K % C 030 Te 80 Min 11 5 742 in/hr DA 53[432-. FT 2 ImpeMous Area 7 93 J AC ImpeMous Arrs> 34543I .} FT•2 %Imp 65 0 AC Hydmuec Length Height Change ` (i 151", Ff WATERSHED SLOPE -- �-I 5i� i % C 072 To 80 Mtn II 5 742 In/hr PRE Runoff Depth P= 37 I.I I 24hr Storm IPREI CN= 70 S- 429 DEPTH IDI= (P 0 2S) 2AP10 BSI D= 1 13 Inches EsOmate Required Storage Volume = (Qpwt Qpm)•Tp 1 39 60 = 68218 Ft 3 S.KSZ b POST Runoff Depth P. 37 Inches 1yr 24hr Storm (POST) CN. 90 S= 1 11 DEPTH IDI= (P 0 2S) 21p.0 8S) D. 264 Inches Time to Peak Tp Tp- (435 D DA)/Qpost Tp. 2764 Min S Z Contour Arta Incr Accum In S In Z Zest 3 20054 0 9 U 0 0 ow 4 21796 20925 20925 1 9 948699895 0 181 5 M595 22696 43621 2 t0 6832825 069315 258 6 30832 27214 70834 3 Il 16809439 109861 326 7 1 M645 1 3=9 103073 4 11 5431879 138629 3 90 75 1 i35028 'IM337 i 137409� 45 11183071716 150408 449 8 36570 _'_ 1 '35799 173208 5 1 12 OB224846 160944 5 02 8 5 37941 13MS6 210464 5 5 12 25706752 IF 1 7M75 5 51,' 9 '39276 386M 249072 6 '12.42549729 r4-1 79176 598,4 t0 41990 40633 289705 7 12 57661844 194591 644 11 44764 43377 333082 8 12 71614398 2 07944 688 Slope m . 2 067686356 b = 207 Y Intercept, 8 727019083 Ks . e IY Intercept) Ka = 6167 R . 0 999591465 STATE Cbt.i—.- Method for Boutin¢ 1 Yenr Storm slue/Storm Dote flare = 21 M efs Ks = 6167 g➢ost= 5061 cis b= 207 T, = 27 64 min PP Eltvatlon = f 5l54 Time Increment= 14 ` ndn Starting Elcvatlnn= it{�55 Riser IBnaI Hsmel Om OHflee Leng0r III) = t241 Diameter- <3R Diameter llvl f Clv= 3 Length litl=>`4T"'2 Inv Elev=,hE"r5b Weir Ell 10.5 CC= 06 0011 We Inv In =ft $Stiy4 Lcngth(in)- 24 Inv Out _ iw4 51 ' Length (RI =" ..532 4M ' i a Inv Elev= >'�T2 it t Wd, Hclght (in)= 1 5 i Ememgmey 9PO —Y Lengm IRI •i�J�`40 �� Elevevon ="Tc< I0.� } TOP of Pend •Sfas"F 1_lg2{ vY Cd• 06 w= 3 am O (in),I Diameterer (In1= o Inv Elev= 0 2od WEIR Icnglh hnl • 84 Inv El, --14 94'92t ^e Weir Hclght(in)= 16r4 r 1' Tim, IN. St.ni a Sr Outflow Rlx, Barrel Orlflcc 2nd WEIR coO We4 Emer en S Iliw Imml Icfal IR 31 (R)B Ie61 legal legal legal Icfal Iefsl Ida) 0 0 0 550 000 000 28 000 000 ON 0 4 26 0 550 000 000 28 000 000 000 0 8 98 617 583 014 000 61 014 0W 000 0 12 201 2928 620 020 000 105 020 000 000 0 16 315 7707 661 025 000 165 025 000 000 0 20 417 15212 705 029 000 235 029 000 000 0 24 485 25140 747 1 19 000 313 033 000 086 0 28 588 36490 786 307 000 389 036 0w 270 0 32 488 49878 825 407 000 449 039 000 368 0 36 404 (MM SM 464 000 483 041 0w 423 0 40 335 69184 872 502 000 506 042 000 459 0 44 277 76011 887 528 000 523 043 000 485 0 48 230 81397 808 548 0 00 535 044 0 00 503 0 52 190 855% 907 562 000 545 045 000 517 0 56 158 80815 9 13 5 n 000 55 1 045 0 00 527 0 60 13 1 91226 9 18 579 000 556 045 0 00 534 0 64 108 92971 921 585 000 560 046 000 539 0 68 90 94165 024 588 000 562 046 000 543 0 72 74 94905 925 590 000 564 046 000 545 0 76 62 95270 926 592 000 564 046 000 546 0 80 5 1 95329 926 592 000 564 046 000 5 46 0 84 42 95131 926 591 000 564 046 000 545 0 88 35 94726 925 6w 000 563 046 000 544 0 92 29 941M 924 588 0M 562 046 000 543 0 % 24 gum 922 586 0M 561 046 000 541 0 100 20 926M 921 584 000 559 046 000 538 0 104 16 91681 919 Sal 000 557 045 000 535 0 108 14 Wilm 917 578 0M 555 045 0IN) 532 0 112 11 89624 9is 574 000 553 045 0IN 529 0 116 09 88517 913 571 000 551 045 000 526 0 120 08 87371 910 567 000 548 045 000 523 0 124 08 86196 908 564 000 546 045 000 519 0 128 05 84998 906 560 000 543 045 000 515 0 132 04 83783 903 556 000 54 1 044 0 00 S it 0 136 04 B2555 901 552 000 538 044 000 507 0 140 03 81319 898 547 000 535 044 000 503 0 144 03 80078 896 543 000 532 044 000 499 0 Time Infl. Store S OuwB Blxr Barrel Or9te 2nd O 119 0001PIY We4 Emer en Spillway (mini IcW IR 31 (M W. I Icfa) Ief41 Icf41 (e51 (cf41 W.1 148 02 78835 $93 539 000 530 044 000 495 0 152 02 77593 890 534 000 527 044 0 00 491 0 156 OI 76352 888 530 000 524 043 000 486 0 160 0 1 75115 885 525 000 52 1 043 000 482 0 164 0 1 738M 882 520 000 51 8 043 000 477 0 168 0 1 72658 880 5 16 000 515 043 000 473 0 1n 01 71440 877 5it 000 512 043 000 468 0 176 01 70230 874 506 000 509 043 000 464 0 180 00 61M9 872 501 000 506 042 000 459 0 184 00 67837 869 496 000 503 042 000 454 0 I88 00 66655 866 491 000 500 042 000 449 0 392 00 65484 863 486 000 497 042 0 00 4 44 0 196 00 64323 861 481 000 493 042 000 439 0 200 00 63174 858 476 000 490 041 000 434 0 204 00 620M 955 471 000 487 041 000 429 0 208 00 60909 853 466 000 48 4 041 000 424 0 212 00 59795 850 460 000 481 041 000 419 0 216 00 58693 847 455 000 477 041 000 414 0 220 00 576M 845 449 000 474 041 000 409 0 224 00 56527 842 444 000 47 1 U 40 000 4 06 0 228 00 55463 839 438 0 00 468 040 0 00 398 0 232 00 54412 837 433 000 464 040 000 393 0 236 00 53374 834 427 000 461 040 000 387 0 240 00 52350 831 421 000 458 040 000 382 0 244 00 51339 829 4 16 000 454 039 0 00 376 0 248 00 50343 826 4 tO 000 45 1 0.39 0 00 370 0 252 00 49360 823 404 000 448 039 000 365 0 256 00 48391 821 398 000 444 039 000 359 0 260 00 47437 8 is 392 000 441 039 000 353 0 264 00 46497 8 16 386 ow 437 039 ow 347 0 268 00 455n 813 379 000 434 038 000 341 0 2n 00 44862 8 it 373 000 431 038 000 335 0 276 00 43766 808 367 000 427 038 0 00 329 0 280 00 428W 805 360 0 00 424 038 000 323 0 284 00 42021 803 354 000 420 GM 0 00 3 16 0 288 00 411M 800 347 000 417 037 000 310 0 292 00 4W39 798 341 000 413 037 000 303 0 296 00 39521 796 3.34 000 408 037 000 297 0 300 00 38720 793 327 000 403 037 000 290 0 304 00 37935 791 320 000 398 037 000 283 0 308 00 37167 788 313 000 393 036 000 277 0 312 00 36415 786 306 000 389 036 000 270 0 316 00 35681 284 299 000 384 036 000 263 0 320 00 3490 781 292 000 379 036 000 256 0 324 00 U264 779 244 000 375 036 000 248 0 328 00 33581 777 2]] 000 370 036 0w 241 0 332 00 32917 775 269 000 366 035 000 234 0 336 00 32271 773 262 000 362 035 000 226 0 340 00 31643 771 254 000 358 0 35 000 2 19 0 344 00 31034 768 246 000 353 035 000 211 0 348 00 30444 766 2]8 000 349 035 000 203 0 352 00 29873 764 230 000 346 035 000 195 0 356 00 29322 ) 63 221 000 342 034 ow 187 0 360 00 28791 761 190 000 338 034 000 156 0 364 00 28335 759 ]At 000 335 034 000 146 0 368 00 2nOl 758 1 n 000 332 034 000 138 0 3n 00 27489 756 164 000 329 034 000 130 0 376 00 27096 ] 55 156 000 326 034 ow 122 0 380 00 26M 753 149 000 324 034 000 115 0 3" 00 26365 752 1 42 0 00 32 1 034 ow I OB 0 388 00 26025 7S] 1 35 000 319 033 000 102 0 392 00 25701 749 129 000 317 033 0 00 096 0 398 00 25391 ] 48 123 000 31 4 033 000 090 0 400 00 25095 747 1 18 000 312 033 ow 085 0 404 00 2"11 746 113 000 310 033 000 080 0 498 00 24540 ) 45 1 08 000 308 OM ow 075 0 (year - 2'i &(, from NOA�- �ur�w:C�' CCLAMY �Onrr � I-Yf- i ein) I -vim ;n r �n Kr O E'q G•q$ 10016 tLS7 5 ZZ 00 0 4 15 m, n 1.08 14, 3Z Co 3o m:n 141 2.qg 60m.\ 185 1,85 Z h� Z 21 1,10 3 kr Z 3Co 0 ° t� &kr z 98 0. 5 IZhr 3kQ O. Z9 2 qk,- 4107 O 177 — Precipitation Frequency Data Server Page 1 of 4 Precipitation Frequency Estimates inches) ARI* (years) into t0 min 15 min 30 min 60 min 120 3 hr ❑❑❑❑❑j� 6 hr 12 hr 24 hr 48 hr d d 10 day11 ZO day 30 day 45 day 60 dad min �1 0 54 0 87 1 08 D9 E5 E2fl 2 36 2 98 3 49 4 07 4 67 5 13 5 80 6 50 8 72 10 81 13 40 16 26 0 0 65 1 03 1 30 180 2 25 2 70 2 88 3 63 4 25 4 93 5 65 6 18 6 99 7 78 10 39 12 84 15 83 19 13 F5 0 75 1 20 1 52 2 16 2 76 3 41 3 65 4 60 5 44 6 39 7 25 7 83 8 79 9 64 12 66 15 40 18 76 22 38 10 0 84 1 34 1 69 2 45 3 19 4 02 4 34 5 49 6 51 7 66 8 64 9 24 10 28 I 1 20 14 54 1748 2 ] 14 2494 25 0 94 1 50 1 90 2 82 3 76 4 86 5 33 6 75 8 08 9 63 10 75 11 35 12 48 13 44 17 20 20 36 24 39 28 39 50 102 163 2 07 3 11 4 22 575 9 6 20 7 88 9 48 11 37 12 61 13 IS 14 32 15 33 19 41 22 66 26 99 31 06 100 1 I l 1 76 2 23 3 41 4 70 6 38 Efl 97127 11 04 13 36 14 72 15 l6 16 33 17 36 21 73 25 04 29 64 33 74 200 1 1- 1 89 2 38 3 71 5 20 7 23 8 20 l0 51 12 80 15 63 17 09 17 38 18 53 19 56 24 19 27 50 32 35 36 42 500 1 30 2 06 2 59 4 12 5 91 8 47 9 78 12 60 15 49 19 14 20 73 20 88 21 72 22 75 27 70 30 90 36 06 39 99 1000 1 39 2 19 2 75 4 46 6 51 9 56 11 18 14 48 17 93 22.26 23 91 23 93 24 43 25 40 30 55 33 59 38 97 42 70 'These preapdabon frequency estimates are based on a oartW duration senes ARI Is the Average Recurrence Interval Please refer to the documentation for mare infomwbon NOTE Fonnathng forces estimates near zero to appear as zero * Upper bound of the 90% confidence interval Precipitation Frequency Estimates (inches) ARI** ❑5 10 15 30 60 120 3❑❑6 12 24 �❑4 ❑7 10 20 30 45 60 (years) min min min min min min hr hr hr hr hr day day day day day day day �059 094 117 161 200 242 261 329 390 448 512 557 623 697 934 1151 1421 1 116 0 70 1 12 1 40 1 94 2 43 2 95 3 17 4 00 4 73 5 44 6 19 6 7 52 8 36 11 14 13 68 16 80 20 24 F5 081 129 l64 232 298 371 400 507 6OS 703 797 853 946 1036 1358 1643 1993 2368 10 0 90 1 44 1 82 2 64 3 44 4 38 4 76 6 04 7 24 8 43 9 49 I0 07 Fl1 07 12 04 15 58 F18 64 22 45 2638 25 1 01 1 61 2 05 3 03 4 04 5 30 5 83 7 42 8 96 10 57 11 83 12 36 13 45 14 47 18 44 21 70 25 - 30 OS 50 1 10 1 76 2 22 3 35 4 54 6 09 6 - 8 65 10 50 12 49 13 93 14 36 15 45 16 52 20 83 24 22 28 71 32 92 100 1 19 1 90 2 40 3 67 5 OS 6 95 7 81 ] 0 00 12 22 14 71 16 30 16 59 17 69 18 77 23 44 26 84 31 59 35 83 200 l 28 2 04 2 57 4 00 5 61 7 87 8 95 11 52 14 16 17 26 19 00 19 13 20 12 21 25 26 24 29 61 34 63 38 81 500 1 41 2 22 2 80 4 45 6 38 9 24 10 69 13 84 17 15 21 27 23 18 23 41 23 80 24 92 30 30 33 51 38 89 42 87 1000 1 51 2 38 2 98 4 83 7 OS 10 46 12 25 15 93 19 83 24 93 26 95 27 22 27 49 28 04 33 64 36 62 42 32 46 03 The upper bound of the confidence interval at 90%cen11dence level is the value which 5%of the srnulated quanale values for a given frequency are greater than "These preopdabon frequency estimates are based on a partial duration sense. ARI is the Average Recurrence Interval please refer to the dowmentabon for more informabon NOTE Fomratbng prevent; estimates near zero to appear as zero * Lower bound of the 90% confidence interval Precipitation Frequency Estimates (inches) ARI** F 10 15 30 60 120 �[h hr ���� 10 20 30 45 60 (years) min min mtn min min min hr hr hr hr hr day day day day 11 day 11 day 11 day httn //hdgr nwq noaa unv/rai-htn/hdgr/hntldnut nerl?tvne--lf&nmtc=iiq&gPnrq=nri>atena 5/9 i/2008 lot Al 4 till'- ` Soil Classification Sod Classification r Sulmhle for Septic Systerrs _a kbdMaWs for Septic Systo LhuubW for Septic Systems water -t} US Highways -0- State Highways -- County Roads NW %a Remurm mew kr min SlteTech Systems The data hermn a IreseraA to he aocumm Mm offer m gtmmft�a mm or "Pied made aabb aosrary Pleam; mwto om due source n(ommtbn are d¢cbmerat tn�./Mwr at�rtoystemscom C.; mw •msmmr7 hsy, m iarvt�v En4erAatnn ten, Omlc. 7 TS Pn Into no n D 1970MO SH HB Wmd John D Fi BodyR ddress POBox229 sh.uddaNC e 29459 VPM� ssa 11917 Value 5430974000 Valuel Value $4.309 740 0D e Soldese LUMBER RIVER BASIN Name of Stream Subbasm Stream Index Number Map Number Class Meadow Branch LBR51 14-12-6-2 123NW7 Meares Millpond LBR56 15-2-6-3-2 J25NW7 Meetinghouse Branch LBR59 15-25-2-6 L25NW3 Mercer Branch LBR53 14-22-1-3-3 H23SW4 Middle Branch LBR55 14-34-11-2 I21NES Middle Dam Creek LBR59 15-25-2-13 L25NW6 Middle River LBR59 15-25-1-12-2 K25SE5 Middle Swamp LBR58 15-4-1-1-2-4 J24NE5 Middle Swamp LBR59 15-25-1-6-4 K26SE4 Midway Branch LBR59 15-25-1-6-1 L26NW3 M111 Branch LBR51 14-6 I22NW4 Mill Branch LBR52 14-10-6 6 I22NE1 Mill Branch LBR51 14-12-5 I22NE9 Mill Branch LBR54 14-30-5 J22NW3 Mill Branch LBR54 14-30-10 J22SE1 Mill Branch LBR51 14-31-1 K23NW5 Mill Branch LBR57 14-31-1 K23NW5 M111 Branch LBR58 15-4-1-1-2-3 I24SE7 Mill Branch LBR58 15-4-1-3 J24NW5 Mill Branch LBR58 15-4-4 J24NW7 Mill Branch LBR58 15-4-11-1 J24SW8 Mil Branch LBR57 15-7-7 K24NE9 Mill Branch LBR57 15-14-1 K25SW7 Mill Branch LBR57 15-17-1-12-1-6-1 K23NE3 Mill Branch (Mill Pond) LBR51 14-27-7 J23SW4 Mill Branch Swamp LBR57 15-17-1-12-3-1 K23NE5 Mill Creek LBR59 15-25-1-18-(1) L26NW1 Mill Creek LBR59 15-25-1-18-(2) L26NW4 Mill Creek (MCLeods Lake) LBR55 14-32-3 H20NW6 Mill Race LBR58 15-4-1-1-1-1 124SWB Mill Swamp LER51 14-18 I23SWB Mill Swamp LER53 14-22-9 123NE7 Milliken Swamp LBR57 15-14-3 K25SW4 Mire Branch LBR58 15-4-8-5 J23SE9 Mirey Branch LBR53 14-22-2-1 H22SE5 Miry Branch LBR54 14-30-7-5 J22NE1 Kitchell Swamp LBR55 14-35 I21SEB Moccasin Branch LBR53 14-22-11-5 123SE2 Mollie Branch LBR58 15-4-8-8 J24SW1 Mollie Swamp LBR57 15-17-1-12-4 K24NW7 Monte Swamp LBR57 15-17-1-12 K24NW8 Morgan Ponds LBR54 14-30-11-2-1 J22MW8 Moss Gill Lake LBR50 14-2-12-3 G21SW7 Moss Neck Swamp LBR51 14-9-3-(1) I22NW2 Moss Neck Swamp LBR51 14-9-3-(2) I22NW2 Mountain Creek LBR50 14-2-16-(2) G21SE4 Mountain Creek (Mountain Lake) LBR50 14-2-16-(1) G21SE7 Muddy Branch LBR57 15-7-2 K25SW6 Mulberry Branch LBR59 15-25-2-7 K25SE7 Mullet Creek LBR59 15-25-1-19 L26NW5 Muster Branch LBR50 14-2-11-2-1-2 G21NW5 Naked Creek LBR50 14-2-6 G20NW1 Nucxtt Branch LBR59 15-25-1-9 K26SW8 Old Field Branch LBR53 14-22-3-3 123NW1 C Sw C Sw + C, Sw C, Sw C, Sw SC, HQW C, Sw C, Sw C Sw C, Sw C WS-IV,Sw C, Sw C, Sw C Sw C, Sw C Sw C, Sw C Sw C, Sw C, Sw C, Sw C Sw C, Sw C, SW C, Sw C, Sw, HQW SA, HQW C C. Sw C, Sw C, SW C, Sw C, Sw C. Sw C, Sw C, SW C, Sw C, Sw C, Sw C, Sw B, SW C C, Sw WS-IV, Sw C if R/o= I B C, SW C,Sw $A, HQW @ C WS-II, ORW C,Sw C, Sw Page 8 of 12 Family Entertainment Center Drainage Basin Data April 2008 BASIN 10 BAPERVIOUS AREA BUILDING PAVEMENT OFF SITE TOTAL AREA TOTAL IMPERVI US WEIGHTED C. 5 s S S 5 SW POND #1 100 0 0 0 71487 0 020 102 0 6467 0 G677 6467 093 103 0 4892 0 4892 4892 095 104 0 6600 0 6600 6600 095 105 0 7796 0 8134 7796 092 106 0 6681 0 7444 GG81 087 107 0 2450 0 2662 2450 089 108 0 3293 0 3937 3293 083 109 0 3293 0 3937 3293 083 110 0 3293 0 3937 3293 083 ill 0 3293 0 3937 3293 083 112 0 3293 0 3937 3293 083 113 0 3293 0 3937 3293 083 114 0 2696 0 3279 2696 082 115 0 4264 0 4476 4264 091 116 0 4288 0 4500 4288 091 117 0 4288 0 4500 4288 091 118 0 3597 0 3809 3597 091 119 0 9412 0 10869 9412 085 120 0 3293 0 3937 3293 083 121 0 3293 0 3937 3293 083 122 0 3293 0 3937 3293 083 123A 0 3293 0 3937 3293 083 1238 0 3293 0 3937 3293 083 124 0 2929 0 3459 2929 084 125 0 0 2996 3459 2996 085 126 0 3293 0 3937 3293 083 127 0 2578 0 3000 2578 084 128 0 0 2325 3000 2325 076 129 0 3293 0 3937 3293 083 130 0 3293 0 3937 3293 083 131 0 3293 0 3937 3293 083 132 0 3293 0 3937 3293 083 133 0 2578 0 3000 2578 084 134 0 0 2518 3000 2518 083 135 0 3293 0 3937 3293 083 136 0 3293 0 3937 3293 083 137 0 3293 0 3937 3293 083 138 0 3293 0 3937 3293 083 139 0 250B 0 3000 2508 083 140 0 0 2593 3000 2593 085 141 0 3293 0 3937 3293 083 142 0 2651 0 3968 2651 070 143 0 3477 0 3934 3477 086 150 12500 0 0 12500 12500 095 151 12500 0 0 12500 12500 095 152 12500 0 0 12500 12500 095 153 12500 0 0 12500 12500 095 FamOy Entertainment Center TOTALS TOTALS (SF) 50000 149305 10432 304826 209737 072 TOTALS(AC) 115 343 024 700 48 072 Family Entertainment Center Totals Off Site includes Parlang and drive areas in basins 125 128 134 140 TOTALS FOR STORMWATER POND INO i101NG ALL PHASES ( FAMRy ENTERTAINMENT CENTER AND ALL FUTIM) BASIN IMPERVIOUS AREA TOTAL TOTAL WEIGHTED I D BUILDING PAVEMENT OFF STTE AREA IMPERVIOUS C (Sf) (sf) (sf) (sf) (5f) SW POND #1 (Including all Future/ORmte Drainage) TOTALS SF) 50000 149305 14612G 531432 345431 069 TOTALS(AQ 115 343 335 122 793 069 Family Entertainment Center AREA - 230432 sf Total Family Entertainment Center Impervious Area = 209737 sf Project % Imp = 910 % Total Pond Dmiruge Area = 531432 sf Total Pond Impervious Area = 345431 sf PaW % Imp - 65 % Family Entertainment Center Stone Drainage Flowrate Calculations Apnl 2008 Storm Dram ID Contn6uting Area DMInage Area Impervious Area Weighted 'C' Length Slope T� hQ QIQ SF SF ft ft/ft min In/hr cfs SW POND #1 SD100** TOTAL DRAINAGE AREA 531432 345431 069 800 0 005 5 16 70 '24 42 SO101 ^ 102 143 150 153 232423 209886 088 711 0 005 4 71 7 0 398 36 5D102** 102-106 150 153 58747 57436 093 590 0 005 408 7 0 158 24 SD103** 103 106 150 153 52070 50969 093 485 0 005 351 7 0 148 24 SD104`* 104-106 150 153 47178 46077 093 358 0 005 278 7 0 141 24 SD105** 105 106 150 153 40578 39477 093 212 0005 1 85 70 731 24 SO106. 106 7444 6681 087 100 0 005 1 04 7 0 80 24 SD107** 107-143151-152 173676 152450 086 699 0005 465 70 310 36 SD108** 108-142151-152 177186 155654 686 614 0005 421 70 31 5 30 S0109 109-112 151-152 40748 38172 090 193 GODS 1 73 7 0 5 9 15 SD110 110-112 151-152 36811 34879 091 131 0 005 1 28 7 0 54 15 SDI 11 111 112 151-152 32874 31586 092 122 0 005 1 21 7 0 49 15 SD112 112 151-152 28937 28293 093 60 0 005 0 70 70 4 3 15 SDI 13— 113-119 151 152 60370 56838 091 498 0 005 358 7 0 158 24 SD114** 114-119 151 152 56433 53545 091 478 0 005 3 47 70 153 24 SD715** 115-119 151-152 53154 50849 092 406 0 005 306 7 0 148 24 SD116** 116-119 151-152 48678 46585 092 334 0 005 263 7 0 142 24 SD117** 117-119 151-152 44178 42297 0 92 262 0 005 2 18 70 13 5 24 SDI 18** 118 119 152 39678 38009 0 92 190 0 005 1 70 7 0 129 24 SD719** 119 10869 9412 085 100 0 005 1 04 7 0 8 5 24 S0120** 120-142 87025 73220 083 502 0 005 3 60 7 0 186 30 SD121 121-125 18748 15750 033 193 0 005 1 73 7 0 2 5 15 SDI22 122-125 14811 12457 083 131 0 005 1 28 7 0 20 15 SD123A 123A B 7874 6586 083 122 0 005 1 21 7 0 1 0 12 SD123B 123E 3937 3293 083 60 0 005 070 7 0 05 12 SD124 124 125 6000 5225 085 87 0 005 0 93 7 0 08 12 SD125 125 3000 2647 086 60 0 005 070 7 0 04 12 SD7 26** 126-142 61340 51530 083 440 0 005 325 7 0 15 2 24 SD127 127 128 6000 4903 081 87 0 005 093 7 0 08 12 SD128 128 3000 2325 078 60 DOGS 070 7 0 04 12 SD129** 129-142 51403 43334 083 431 0 005 3 20 7 0 13 9 24 SD730** 130 142 47466 40041 0 83 369 0 005 284 7 0 13 4 24 SD131— 131-142 43529 36748 0 83 360 0 005 279 7 0 128 24 SD132** 132-142 39592 33455 083 298 0 005 2 41 7 0 123 24 SD133 133 134 6000 5096 084 87 0 005 093 7 0 08 12 SD 134 134 3000 2518 083 60 0 005 070 7 0 04 12 SD135'* 135-142 29655 25066 083 289 0005 235 70 110 24 SD736** 136-142 25718 21773 083 227 0005 195 70 105 24 SD137— 137-142 21781 18480 084 218 0 005 1 89 7 0 99 24 SD738** 138-142 17844 15187 084 156 0 005 1 46 7 0 94 24 SD 139 139 140 6000 5101 084 87 0 005 093 70 08 12 SD140 140 3000 2593 Gas 60 0 005 070 7 0 04 12 SDI 41 *' 141 142 7905 6793 084 147 0 005 1 40 70 81 24 SD142** 142 3968 3500 086 85 0 005 092 7 0 75 24 SD143 143 3934 3477 086 70 0 005 079 7 0 05 12 • SD 100 Q10 is the Routed Flow •• NOTE Q10 VALUES INCLUDE AN ADDITIONAL 7 CFS FOR POSSIBLE FUTURE FLOW Family Entertainment Center Storm Drainage Inverts April 2008 Storm Dram Length Inv In Inv Out Throat Elev, Culvert Diam I D (Feet) msl (msl) at Inv In (inches) SW POND #1 SDI 00 47 580 Soo 600 36 SD101 54 900 700 1750 42 SD102 78 947 900 1740 30 SD103 105 1000 947 15 98 24 SD104 127 1071 1000 15 73 24 SD105 146 11 44 1071 1573 24 5DI06 112 1200 1144 1648 24 SD107 12 1000 '9 50 1740 36 SD108 85 1060 1000 1750 36 SD109 9 11 00 1060 1750 15 SDI 10 62 1290 11 00 1750 is SDI 11 9 1300 1290 1750 15 SDI 12 62 13 50 1300 1750 15 SDI 13 62 1095 10 60 1750 24 SDI 14 20 11 09 1095 1800 24 SDI 1 5 73 11 47 11 09 182 24 SDI 16 72 11 83 11 47 182 24 SDI 17 72 12 19 11 83 182 24 SDI 18 72 12 55 12 19 182 24 SDI 19 90 13 1255 179 24 SDI 20 112 11 09 106 18 30 SDI 21 9 11 2 11 09 18 15 SDI 22 62 127 11 2 18 is SD123A 9 13 5 127 18 12 SD123B 62 14 135 18 12 SDI 24 56 13 3 127 179 12 SDI 25 27 13 5 133 179 12 SD126 62 114 1109 18 24 SD127 56 133 11 4 179 12 SD128 27 13 5 133 179 12 SD 129 9 11 49 11 4 18 24 SDI 30 62 11 8 11 49 18 24 SD131 9 11 89 11 8 18 24 SDI 32 62 122 11 89 18 24 SDI 33 56 133 122 179 12 SDI 34 27 13 5 133 179 12 SDI 35 9 1229 122 18 24 SDI 36 62 126 1229 18 24 SDI 37 9 12 69 126 18 24 SD138 62 13 1269 18 24 SDI 39 56 13 3 13 179 12 SD140 27 13 5 13 3 179 12 SD141 9 132 13 18 24 SD142 62 14 132 18 24 SD143 73 14 10 174 12 SD100 HEADWATER ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 ffiMgx'241 NANNINGS n )IA FOR CULVERT PIPE = INCHES )IA FOR RISER = INCHES _ENGTH OF CULVERT PIPE = 47 FEET NV IN ELEV OF CULVERT = S 80 FEET NV OUT ELEV OF CULVERT = 5 00 FEET NLET COEF FOR CULV PIPE FLOW = 6rsl" v� NLET COEF FOR CULVERT INLET CONTROL Cx USER WEIR ELEVATION = (© FEET NEIR FLOW COEF = FAILWATER ELEVATION = 0 FEET /FI OCITY= 3 40 FPS 101 ELEVATION CALCULATIONS =LOWRATE = 8 CFS HANNINGS n = )IA FOR CULVERT PIPE = 42 INCHES )IA FOR RISER = INCHES -ENGTH OF CULVERT PIPE = 54 FEET NV IN ELEV OF CULVERT = 900 FEET NV OUT ELEV OF CULVERT = 700 FEET NLET COEF FOR CULV PIPE FLOW = NLET COEF FOR CULVERT INLET CONTROL =1391,1 21SER WEIR ELEVATION FEET HEIR FLOW COEF = iAILWATER ELEVATION = 6 00 FEET VELOCITY= 4 14 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 050 HEADWATER ELEVATION = 780 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 0 32 HEADWATER ELEVATION = 6 32 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/OI HEADWATER ELEVATION ASSUMING INLET HEAD = 074 HEADWATER ELEVATION = 11 49 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 047 HEADWATER ELEVATION = 647 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/OI HEADWATER ELEVATION = #DIV/OI Family Entertainment Center P � Subject Family Entertainment Center From Linda Lewis <lmda lewis@ncmail net> Date Tue, 20 May 2008 13 42 56 -0400 To Jay Houston <Jayhouston@atmc net> CC Brian McCall <BM80allstar@aol com> The Division received an incomplete stormwater permit application for the subject project on May 12, 2008 Please submit the following information in order to accept the application for review 1 Please use the newest version of the application form dated 3/27/2008, which provides the ability to breakdown the drainage area into onsite and offsite Since this application has offsite drainage, this would be a simple way to report the offsite drainage area 2 Brunswick County is a Phase II county, therefore, unless the proposed project has a vested development right dated prior to July 1, 2007, the project is subject to the design criteria set forth in Session Law 2006-246 This will increase the design storm to 1 5" and restrict outlet flow from the pond to no more than the 1 year 24 hour pre -development discharge rate 3 Please provide soils information in regard to the SHWT elevation The permanent pool of the pond should be set within 6" of the SHWT to avoid draining off adjacent wetlands Please submit the requested information within the next 5 business days, or the application will be returned Linda 1 of 1 5/20/2008 1 43 PM HOUSTON and ASSOCIATES, P.A. t Consulting Engineers SHALLOTTE NORTH CAROLINA 28459 Telephone (910) 754 6324 117 Pine Street Facsimile (910) 754 2121 Post Office Box 627 Wednesday, May 7, 2008 Ms Linda Lewis, Environmental Engineer III Division of Water Quality NC Department of Environment and Natural Resources 127 Cardinal Drive Extension Wilmington, North Carolina 28405 Subject Family Entertainment Center - East Coast Entertainment of Shallotte, LLC Brunswick County, North Carolina Stormwater Permit Submittal Dear Ms Lewis On behalf of East Coast Entertainment of Shallotte, LLC, and' its managing member, Mr Brian McCall, we are submitting for your review and approval two (2) copies each of the stormwater plans, stormwater calculations, stormwater application, proposed deed restriction sheet, and supplement sheets Enclosed is a check in the amount of $505 00 to cover the cost of the application fee We appreciate your attention in this matter Should you have any comments or require any additional information, please do not hesitate to contact our office at your convenience MAY 1 � 2U08 Enclosures Sincerely, Houston, P E to and Associates, P A pc Mr Brian McCall, East Coast Entertainment of Shallotte, LLC Dr John D Ward File, 07-1084 (Family Entertainment Center - SW) HOUSTON and ASSOCIATES, P.A. Consulting Engineers SHALLOTTE NORTH CAROLINA 28459 Telephone (910) 754-6324 Facsimile (910) 754 2121 117 Pine Street Post Office Box 627 Narrative/Project Description, (Family Entertainment Center, Shallotte) The Family Entertainment Center project is located in southeast Brunswick County, in Shallotte, North Carolina The Family Entertainment Center is being developed now as Phase I Phase I will include a Stormwater Pond that is engineered to treat future Impervious Area Development of The Family Entertainment Center will be accompanied with a curb and guttered entrance with catch basms/drop inlets and piping The parking areas will include catch basins and piping One Stormwater Pond has been enMo—rml eatment The SW pond 1s designed to store the required one of runof nd to meet all of NCDENR's requirements The proposed er on out tnto the nearby wetlands through a level spreader The design of each BMP was done according to the NCDENR Stormwater BMP Design Manual The project area to be disturbed is slightly rolling with a consistent slope from the southern project boundary to the northern project boundary The Soil Survey of Brunswick County classifies the soil types within the project boundaries as Foreston Runoff drains to the Mulberry Branch This submittal is for a High Density Stormwater Permit for The Family Entertainment Center �JSEAL 9616 HION TER ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apn1 2008 FLOWRATE= CFS MANNINGS nDIA 01,116 FOR CULVERT PIPE= INCHES DIA FOR RISER=INCHES LENGTH OF CULVERT PIPE = 78 FEET INV IN ELEV OF CULVERT = 947 FEET INV OUT ELEV OF CULVERT = 9 00 FEET INLET COEF FOR CULV PIPE FLOW =rosoloo INLET COEF FOR CULVERT INLET CONTROL RISER WEIR ELEVATION = FEET WEIR FLOW COEF = TAILWATER ELEVATION = 11 49 FEET VELOCITY= 3 22 FPS 03 TER ELEVATION CALCULATIONS HEADWATER ELEVATION ASSUMING INLET HEAD — 045 HEADWATER ELEVATION = 11 17 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 034 HEADWATER ELEVATION = 11 83 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 NRATE = CFS NINGS n = 1-1-oa HEADWATER ELEVATION ASSUMING INLET CON FOR CULVERT PIPE =INCHES FOR RISER = INCHES HEAD = 096 ;TH OF CULVERT PIPE = 105 FEET HEADWATER ELEVATION = 11 96 IN ELEV OF CULVERT = 10 00 FEET OUT ELEV OF CULVERT = 947 T COEF FOR CULV PIPE FLOW = ELEVATION ASSUMING PIPE FLOW T COEF FOR CULVERT INLET CONTROL =WEIR ELEVATION = MHEADWATER FEET HEAD = 090 FLOW COEF = HEADWATER ELEVATION = 12 73 WATER ELEVATION = 11 83 FEET )CITY= 471 FPS HEADWATER ELEVATION ASSUMING WEIR FLOW 211BIM BlIff ➢ I SD 104 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 CFS MANNINGS n = DIA FOR CULVERT PIPE= INCHES MI DIA FOR RISER = INCHES LENGTH OF CULVERT PIPE = 127 FEET INV IN ELEV OF CULVERT = 10 71 FEET INV OUT ELEV OF CULVERT = 10 00 FEET , INLET COEF FOR CULV PIPE FLOW = I INLET COEF FOR CULVERT INLET CONTROL =A RISER WEIR ELEVATION = q FEET WEIR FLOW COEF = TAILWATER ELEVATION = FEET VELOCITY= 4 49 FPS TAII WATER IiNKNAWN = 7FRn (0) SD105 TER ELEVATION CALCULATIONS HEADWATER ELEVATION ASSUMING INLET HEAD = 087 HEADWATER ELEVATION = 12 58 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 089 HEADWATER ELEVATION = 13 62 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/OI HEADWATER ELEVATION = #DIV/01 NRATE = CFS NINGS n = HEADWATER ELEVATION ASSUMING INLET CON FOR CULVERT PIPE = INCHES IMINCHES FOR RISER = HEAD — 075 ;TH OF CULVERT PIPE = 146 FEET HEADWATER ELEVATION = 13 19 IN ELEV OF CULVERT = 11 44 FEET OUT ELEV OF CULVERT = 10 71 FEET T COEF FOR CULV PIPE FLOW = 0?5 HEADWATER ELEVATION ASSUMING PIPE FLOW T COEF FOR CULVERT INLET CONTROL = Q°n 2 WEIR ELEVATION = �0 FEET HEAD = 082 t FLOW COEF = w HEADWATER ELEVATION = 1444 WATER ELEVATION = FEET )CITY= 417 FPS HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/OI HEADWATER ELEVATION = #DIV/OI 106 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 FLOWRATE = CFS MANNINGS n = Ab DIA FOR CULVERT PIPE = INCHES DIA FOR RISER = 0- . 9 INCHES LENGTH OF CULVERT PIPE = 112 FEET INV IN ELEV OF CULVERT = 1200 FEET INV OUT ELEV OF CULVERT = 17 44 FEET INLET COEF FOR CULV PIPE FLOW =mwzo INLET COEF FOR CULVERT INLET CONTROL RISER WEIR ELEVATION = FEET WEIR FLOW COEF = TAILWATERELEVATION = 14 44 FEET VELOCITY= 2 55 FPS 107 ELEVATION CALCULATIONS CFS IANNINUS n = "^'`g,wu 1, IA FOR CULVERT PIPE = r 43t INCHES IA FOR RISER = 13 INCHES ENGTH OF CULVERT PIPE = 12 FEET IV IN ELEV OF CULVERT = 10 00 FEET IV OUT ELEV OF CULVERT = 950 FEET ILET COEF FOR CULV PIPE FLOW ILET COEF FOR CULVERT INLET CONTROL =0 6 ISER WEIR ELEVATION = Q FEET IEIR FLOW COEF = + AILWATER ELEVATION = t t FEET ELOCITY= 439 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 028 HEADWATER ELEVATION = 13 28 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 027 HEADWATER ELEVATION = 1471 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 083 HEADWATER ELEVATION = 12 33 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 047 HEADWATER ELEVATION = 11 96 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 I SD 108 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apn1 2008 FLOWRATE _ CFS MANNINGS n = &IN DIA. FOR CULVERT PIPE = INCHES DIA FOR RISER =INCHES LENGTH OF CULVERT PIPE = 85 FEET INV IN ELEV OF CULVERT = 10 60 FEET INV OUT ELEV OF CULVERT = 1000 FEET ' INLET COEF FOR CULV PIPE FLOW = INLET COEF FOR CULVERT INLET CONTROL =E RISER WEIR ELEVATION = FEET WEIR FLOW COEF = TAILWATER ELEVATION = 12 33 FEET VFI OCITY= 4 46 FPS SD109 TER ELEVATION CALCULATIONS NRATE _ CFS NINGS n = L47�INCHES FOR CULVERT PIPE = FOR RISER = INCHES ;TH OF CULVERT PIPE = 9 FEET IN ELEV OF CULVERT = 11 00 FEET OUT ELEV OF CULVERT = 1060 FEET T COEF FOR CULV PIPE FLOW — T COEF FORCULVERT INLET CONTROL2 WEIR ELEVATION = R FEET I FLOW COEF = WATER ELEVATION = 12 95 FEET )CITY= 481 FPS WATER IINKNr1WN = 7FRn (01 HEADWATER ELEVATION ASSUMING INLET HEAD = 086 HEADWATER ELEVATION = 12 96 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 062 HEADWATER ELEVATION = 1295 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/OI HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 1 00 HEADWATER ELEVATION = 12 62 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 060 HEADWATER ELEVATION = 13 56 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD — #DIV/OI HEADWATER ELEVATION = #DIV/01 110 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apn1 2008 FLOWRATE = CFS MANNINGS n = DIA FOR CULVERT PIPE= 1-11INCHES INCHES DIA FOR RISER= LENGTH OF CULVERT PIPE = 62 FEET INV IN ELEV OF CULVERT = 12 90 FEET INV OUT ELEV OF CULVERT = 11 00 FEET INLET COEF FOR CULV PIPE FLOW = INLET COEF FOR CULVERT INLET CONTROL RISER WEIR ELEVATION = EFEET FEET WEIR FLOW COEF = TAILWATER ELEVATION = VELOCITY= 4 40 FPS 111 ELEVATION CALCULATIONS CFS 4ANNINub n = )IA FOR CULVERT PIPE = W INCHES )IA FOR RISER = INCHES _ENGTH OF CULVERT PIPE = 9 FEET NV IN ELEV OF CULVERT = 13 00 FEET NV OUT ELEV OF CULVERT = 12 90 FEET NLET COEF FOR CULV PIPE FLOW = NLET COEF FOR CULVERT INLET CONTROL 21SER WEIR ELEVATION = 0" FEET NEIR FLOW COEF = I-AILWATER ELEVATION = 14 38 FEET IELOCITY= 3 99 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 084 HEADWATER ELEVATION = 1436 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 082 HEADWATER ELEVATION = 1438 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD - #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 069 HEADWATER ELEVATION = 1431 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD - 042 HEADWATER ELEVATION = 1479 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 112 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 FLOWRATE = CFS MANNINGS n = 1 DIA FOR CULVERT PIPE = INCHES DIA FOR RISER = ti '0 INCHES LENGTH OF CULVERT PIPE = 62 FEET INV IN ELEV OF CULVERT = 13 50 FEET INV OUT ELEV OF CULVERT = 1300 FEET INLET COEF FOR CULV PIPE FLOW = 0 INLET COEF FOR CULVERT INLET CONTROL = _ Q RISER WEIR ELEVATION = 0(3 FEET WEIR FLOW COEF = 0 TAILWATER ELEVATION = 14 79 FEET VELOCITY= 3 50 FPS SD113 TER ELEVATION CALCULATIONS HEADWATER ELEVATION ASSUMING INLET HEAD = 053 HEADWATER ELEVATION = 14 65 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 052 HEADWATER ELEVATION = 15 31 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 VRATE =a CFS NINGS n = Q_'01 HEADWATER ELEVATION ASSUMING INLET CON FOR CULVERT PIPE _, INCHES FOR RISER = INCHES HEAD = 1 09 ,TH OF CULVERT PIPE = 62 FEET HEADWATER ELEVATION = 1304 IN ELEV OF CULVERT = 10 95 FEET OUT ELEV OF CULVERT = 10 60 FEET T COEF FOR CULV PIPE FLOW = HEADWATER ELEVATION ASSUMING PIPE FLOW T COEF FOR CULVERT INLET CONTROL =2 WEIR ELEVATION = FEET j HEAD = 085 I FLOW COEF = HEADWATER ELEVATION = 13 80 WATER ELEVATION = FEET )CITY= 5 03 FPS HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/Oi HEADWATER ELEVATION = #DIV/01 14 TER ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apn1 2008 FLOWRATE = CFS HANNINGS n = 0 DIA FOR CULVERT PIPE = h5 INCHES DIA FOR RISER = INCHES LENGTH OF CULVERT PIPE = 20 FEET NV IN ELEV OF CULVERT = 11 09 FEET NV OUT ELEV OF CULVERT = 10 95 FEET NLET COEF FOR CULV PIPE FLOW = 0� 5 NLET COEF FOR CULVERT INLET CONTROL = 16 dISER WEIR ELEVATION = §O"0 FEET HEIR FLOW COEF = 0 FAILWATER ELEVATION = M FEET ✓ELOCITY= 487 FPS rAll WATFR IINI(N(1WN = 7FRn (Ol SDI 15 HEADWATER ELEVATION CALCULATIONS FLOWRATE— f4 CFS MANNINGS n =�01 DIA FOR CULVERT PIPE = 2 INCHES DIA FOR RISER = INCHES LENGTH OF CULVERT PIPE = 73 FEET INV IN ELEV OF CULVERT = 11 47 FEET INV OUT ELEV OF CULVERT = 11 09 FEET INLET COEF FOR CULV PIPE FLOW =OS INLET COEF FOR CULVERT INLET CONTROL = 0 RISER WEIR ELEVATION = 1 0 OD FEET WEIR FLOW COEF = �0 TAILWATER ELEVATION = 14 43 FEET VELOCITY= 4 71 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 1 02 HEADWATER ELEVATION = 13 11 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD — 063 HEADWATER ELEVATION = 1443 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 096 HEADWATER ELEVATION = 1343 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 078 HEADWATER ELEVATION = 15 21 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 Family Entertainment Center Culvert Hydraulics April 2008 SD116 HEADWATER ELEVATION CALCULATIONS FLOWRATE = R2 CFS MANNINGS n = 0?Q112 DIA FOR CULVERT PIPE = _ INCHES DIA FOR RISER = O INCHES LENGTH OF CULVERT PIPE = 72 FEET INV IN ELEV OF CULVERT = 11 83 FEET INV OUT ELEV OF CULVERT = 11 47 FEET INLET COEF FOR CULV PIPE FLOW = INLET COEF FOR CULVERT INLET CONTROL RISER WEIR ELEVATION = a FEET WEIR FLOW COEF = TAILWATER ELEVATION = 15 21 FEET VELOCITY= 452 FPS TAII WATER IINKNOWN = 7FRO (0) 17 TER ELEVATION CALCULATIONS :LOWRATE = CFS AANNINGS n = I)IA J,4JINCHES FOR CULVERT PIPE= )IA FOR RISER = INCHES _ENGTH OF CULVERT PIPE = 72 FEET NV IN ELEV OF CULVERT = 12 19 FEET NV OUT ELEV OF CULVERT = 11 83 NLET COEF FOR CULV PIPE FLOW = S NLET COEF FOR CULVERT INLET CONTROL 6 USER WEIR ELEVATION = 0 FEET NEIR FLOW COEF = 0 FAILWATER ELEVATION = 15 93 FEET /ELOCFFY= 430 FPS HEADWATER ELEVATION ASSUMING INLET HEAD - 088 HEADWATER ELEVATION = 1371 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 072 HEADWATER ELEVATION = 15 93 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 080 HEADWATER ELEVATION = 13 99 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 065 HEADWATER ELEVATION = 1658 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 ISD118 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 VRATE = CFS NINGS n = FOR CULVERT PIPE _ V07�-'.4 INCHES FOR RISER = INCHES rH OF CULVERT PIPE = 72 FEET IN ELEV OF CULVERT = 1255 FEET OUT ELEV OF CULVERT = T2 19 FEET F COEF FOR CULV PIPE FLOW = Q F COEF FOR CULVERT INLET CONTROL = 106 I WEIR ELEVATION = ua;0 FEET FLOW COEF = WATER ELEVATION = L65& FEET )CITY= 411 FPS WATFR IINI(NOWN = 7FR0 (0) SD119 HEADWATER ELEVATION CALCULATIONS FLOWRATE = CFS MANNINGS n = DIA FOR CULVERT PIPE= INCHES MINCHES DIA FOR RISER = LENGTH OF CULVERT PIPE = 90 FEET INV IN ELEV OF CULVERT = 13 00 FEET INV OUT ELEV OF CULVERT = 12 55 FEET INLET COEF FOR CULV PIPE FLOW = INLET COEF FOR CULVERT INLET CONTROL = 0 RISER WEIR ELEVATION = M ;OQ FEET WEIR FLOW COEF =0 +.xx TAILWATER ELEVATION = 17 FEET VELOCITY= 2 71 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 073 HEADWATER ELEVATION = 1428 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 059 HEADWATER ELEVATION = 1717 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 032 HEADWATER ELEVATION = 1432 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 028 HEADWATER ELEVATION = 1745 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 ISM 20 TER ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 LOWRATE = CFS IANNINGS n = F�Aw HEADWATER ELEVATION ASSUMING INLET IA FOR CULVERT PIPE=INCHES IA FOR RISER = INCHES HEAD = 062 ENGTH OF CULVERT PIPE = 112 FEET HEADWATER ELEVATION = 1296 JV IN ELEV OF CULVERT = 11 09 FEET JV OUT ELEV OF CULVERT = 1060 FEET JLET COEF FOR CULV PIPE FLOW =El JLET COEF FOR CULVERT INLET CONTROL = ISER WEIR ELEVATION = FEET IEIR FLOW COEF = AILWATER ELEVATION = 12 95 FEET ELOCITY= 3 79 FPS SD121 HEADWATER ELEVATION CALCULATIONS FLOWRATE _ CFS HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 0 53 HEADWATER ELEVATION = 1348 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 NINGS n = HEADWATER ELEVATION ASSUMING INLET CON FOR CULVERT PIPE _ WINCHES INCHES FOR RISER = HEAD = 044 �T H OF CULVERT PIPE = 9 FEET HEADWATER ELEVATION = 12 14 IN ELEV OF CULVERT = 11 20 FEET OUT ELEV OF CULVERT = 1109 FEET T COEF FOR CULV PIPE FLOW = {Ot5 HEADWATER ELEVATION ASSUMING PIPE FLOW T COEF FOR CULVERT INLET CONTROL = 0�6 R WEIR ELEVATION = 0 FEET HEAD = 027 t FLOW COEF = HEADWATER ELEVATION = 1376 WATER ELEVATION = T FEET )CITY= 3 18 FPS HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 ISD122 TER ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 NRATE = CFS ININGS n = NIINCHES HEADWATER ELEVATION ASSUMING INLET CON FOR CULVERT PIPE _ INCHES FOR RISER = HEAD = 028 ;TH OF CULVERT PIPE = 62 FEET HEADWATER ELEVATION = 1348 IN ELEV OF CULVERT = 1270 FEET OUT ELEV OF CULVERT = 11 20 FEET T COEF FOR CULV PIPE FLOW = HEADWATER ELEVATION ASSUMING PIPE FLOW T COEF FOR CULVERT INLET CONTROL =R WEIR ELEVATIONFEET r�-Q HEAD = 032 FLOW COEF = HEADWATER ELEVATION = 1408 WATER ELEVATION = 13 76 FEET YF Y= 2 55 FPS SD123A ELEVATION CALCULATIONS NRATE - CFS NINGS n = EIINCHES FOR CULVERT PIPE _ INCHES FOR RISER = TH OF CULVERT PIPE = 9 FEET IN ELEV OF CULVERT = 13 50 kEET OUT ELEV OF CULVERT = 12 70 FEET T COEF FOR CULV PIPE FLOW = Q 5 T COEF FOR CULVERT INLET CONTROL tN6 R WEIR ELEVATION = 0(Q FEET I FLOW COEF = 0 WATER ELEVATION = 1408 FEET )CITY= 1 27 FPS WATER IINIMMIN! = 7FRn (n) HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 007 HEADWATER ELEVATION = 1407 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 004 HEADWATER ELEVATION = 14 12 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 CFS MANNINbi) 11 = DIA FOR CULVERT PIPE= INCHES Ek' DIA FOR RISER= INCHES LENGTH OF CULVERT PIPE = 62 FEET INV IN ELEV OF CULVERT = 1400 FEET INV OUT ELEV OF CULVERT = 13 50 FEET - INLET COEF FOR CULV PIPE FLOW = 0` INLET COEF FOR CULVERT INLET CONTROL = 10--- 0 m 6 RISER WEIR ELEVATION = 0.0, FEET WEIR FLOW COEF =0 TAILWATER ELEVATION = V12 FEET VELOCITY= 0 64 FPS 24 ELEVATION CALCULATIONS CFS IANNINhJ n = "''SY 1'4 IA FOR CULVERT PIPE = 2 INCHES IA FOR RISER = 0 INCHES ENGTH OF CULVERT PIPE = 56 FEET JV IN ELEV OF CULVERT = 1330 FEET JV OUT ELEV OF CULVERT = 1270 FEET JLET COEF FOR CULV PIPE FLOW = Q^5 JLET COEF FOR CULVERT INLET CONTROL =„ , ISER WEIR ELEVATION = tk"Od FEET IEIR FLOW COEF = AILWATER ELEVATION = 14 08 FEET 'ELOCITY= 1 02 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 002 HEADWATER ELEVATION = 14 52 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 002 HEADWATER ELEVATION = 1414 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 004 HEADWATER ELEVATION = 13 84 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 005 HEADWATER ELEVATION = 14 12 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/OI HEADWATER ELEVATION = #DIV/OI Family Entertainment Center Culvert Hydraulics Apn1 2008 SD125 HEADWATER ELEVATION CALCULATIONS NRATE = CFS ININGS n = FOR CULVERT PIPE _� E2 INCHES HEADWATER ELEVATION ASSUMING INLET CON FOR RISER = Y _ ? INCHES HEAD = 001 3TH OF CULVERT PIPE = 27 FEET HEADWATER ELEVATION = 1401 IN ELEV OF CULVERT = 1350 FEET OUT ELEV OF CULVERT = 1330 FEET , T COEF FOR CULV PIPE FLOW = fY5 HEADWATER ELEVATION ASSUMING PIPE FLOW T COEF FOR CULVERT INLET CONTROL =� _6 - - R WEIR ELEVATION = FEET HEAD = 001 t FLOW COEF = 0 HEADWATER ELEVATION = 14 13 WATER ELEVATION = 14 12 FEET )CITY= 0 51 FPS SD126 HEADWATER ELEVATION CALCULATIONS FLOWRATE _ CFS MANNINGS n = JM4 DIA FOR CULVERT PIPE= INCHES DIA FOR RISER = INCHES LENGTH OF CULVERT PIPE = 62 FEET INV IN ELEV OF CULVERT = 11 40 FEET INV OUT ELEV OF CULVERT = 11 09 FEET INLET COEF FOR CULV PIPE FLOW = - INLET COEF FOR CULVERT INLET CONTROL = RISER WEIR ELEVATION = Ot FEET 3 WEIR FLOW COEF =`s TAILWATER ELEVATION = 5 FEET VELOCITY= 4 84 FPS HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 101 HEADWATER ELEVATION = 1341 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 078 HEADWATER ELEVATION = 1427 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD - #DIV/01 HEADWATER ELEVATION = #DIV/01 27 TER ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 CFS MANNINGS n = IX DIA FOR CULVERT PIPE = INCHES DIA FOR RISER = , INCHES LENGTH OF CULVERT PIPE = 56 FEET INV IN ELEV OF CULVERT = 13 30 FEET 1NV OUT ELEV OF CULVERT = 11 40 FEET INLET COEF FOR CULV PIPE FLOW = INLET COEF FOR CULVERT INLET CONTROL =LEMIFEET RISER WEIR ELEVATION = FEET WEIR FLOW COEF =TAILWATER ELEVATION = VELOCITY= 1 02 FPS TAII WATFR IINKN(1WN = 7FRn (0) w ELEVATION CALCULATIONS CFS AANNINUb n = t'3siz' AA FOR CULVERT PIPE = INCHES ff AA FOR RISER = INCHES _ENGTH OF CULVERT PIPE = 27 FEET NV IN ELEV OF CULVERT = 13 50 FEET NV OUT ELEV OF CULVERT = 1330 FEET NLET COEF FOR CULV PIPE FLOW = NLET COEF FOR CULVERT INLET CONTROL =;yi USER WEIR ELEVATION = ! FEET NEIR FLOW COEF = FAILWATER ELEVATION = 14 32 FEET /ELOCITY= 0 51 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 004 HEADWATER ELEVATION = 1384 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 005 HEADWATER ELEVATION = 1432 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 001 HEADWATER ELEVATION = 1401 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 001 HEADWATER ELEVATION = 1433 HEADWATER ELEVATION ASSUMING WEIR FLOW #DIV/01 ISD129 TER ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 =13a91 CFS IANNINGS n = og HEADWATER ELEVATION ASSUMING INLET IA FOR CULVERT PIPE_ INCHES IA FOR RISER = INCHES HEAD = 084 ENGTH OF CULVERT PIPE = 9 FEET HEADWATER ELEVATION = 13 33 JV IN ELEV OF CULVERT = 11 49 FEET JV OUT ELEV OF CULVERT = 11 40 FEET JLET COEF FOR CULV PIPE FLOW = JLET COEF FOR CULVERT INLET CONTROL = ISER WEIR ELEVATION = OF00 FEET IEIR FLOW COEF = AILWATER ELEVATION = 14 27 FEET FI OCITY= 4 42 FPS SD130 HEADWATER ELEVATION CALCULATIONS FLOWRATE _ 3a CFS MANNINGS n = Okfl1j DIA FOR CULVERT PIPE = r+ 2 INCHES DIA FOR RISER = INCHES LENGTH OF CULVERT PIPE = 62 FEET INV IN ELEV OF CULVERT = 11 80 FEET INV OUT ELEV OF CULVERT = 11 49 INLET COEF FOR CULV PIPE FLOW - 0 f INLET COEF FOR CULVERT INLET CONTROL = O RISER WEIR ELEVATION = (i10 FEET WEIR FLOW COEF = TAILWATER ELEVATION = 1475 FEET VELOCITY= 427 FPS TAII WATFR IINI(NOWN = 7FRn (n) HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 048 HEADWATER ELEVATION = 1475 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 078 HEADWATER ELEVATION = 13 58 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 061 HEADWATER ELEVATION = 1536 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/OI 131 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apn1 2008 CFS MANNINGS n DIA FOR CULVERT PIPE =s INCHES DIA FOR RISER = INCHES LENGTH OF CULVERT PIPE = 9 FEET INV IN ELEV OF CULVERT = 11 89 FEET _ INV OUT ELEV OF CULVERT = 11 80 FEET ' INLET COEF FOR CULV PIPE FLOW = INLET COEF FOR CULVERT INLET CONTROL RISER WEIR ELEVATION = F1,6136 FEET WEIR FLOW COEF = TAILWATER ELEVATION = FEET VELOCITY= 407 FPS 132 ELEVATION CALCULATIONS CFS MANNINGS n = - VShi G DIA FOR CULVERT PIPE = , INCHES DIA FOR RISER = INCHES LENGTH OF CULVERT PIPE = 62 FEET INV IN ELEV OF CULVERT = 12 20 FEET INV OUT ELEV OF CULVERT = 11 89 FEET INLET COEF FOR CULV PIPE FLOW INLET COEF FOR CULVERT INLET CONTROL — �6 RISER WEIR ELEVATION = @ FEET WEIR FLOW COEF = U TAILWATER ELEVATION = C FEET VELOCITY= 3 92 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 072 HEADWATER ELEVATION = 1361 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 041 HEADWATER ELEVATION = IS 77 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/Oi HEADWATER ELEVATION — #DIV/Oi HEADWATER ELEVATION ASSUMING INLET HEAD = 066 HEADWATER ELEVATION = 1386 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 051 HEADWATER ELEVATION = 1629 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = ELi7Pl of Family Entertainment Center Culvert Hydraulics Apnl 2008 ISD133 HEADWATER ELEVATION CALCULATIONS LOWRATE = 0 CFS IANNINGS n = +cbd HEADWATER ELEVATION ASSUMING INLET CONTROL IA FOR CULVERT PIPE= 010 INCHES IA FOR RISER= INCHES HEAD = 004 ENGTH OF CULVERT PIPE = 56 FEET HEADWATER ELEVATION = 1384 JV IN ELEV OF CULVERT = 13 30 FEET JV OUT ELEV OF CULVERT = 12 20 FEET JLET COEF FOR CULV PIPE FLOW =2-0111 HEADWATER ELEVATION ASSUMING PIPE FLOW JLET COEF FOR CULVERT INLET CONTROL ISER WEIR ELEVATION = FEET HEAD = 005 IEIR FLOW COEF = HEADWATER ELEVATION = 1634 AILWATER ELEVATION = 1629 FEET ELOCTTY= 1 02 FPS HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 SD134 HEADWATER ELEVATION CALCULATIONS NRATE _ - Q�4 CFS NINGS n = � 0 012 HEADWATER ELEVATION ASSUMING INLET FOR CULVERT PIPE = i INCHES FOR RISER = * p INCHES HEAD = 001 TH OF CULVERT PIPE = 27 FEET HEADWATER ELEVATION = 1401 IN ELEV OF CULVERT = 1350 FEET OUT ELEV OF CULVERT = 1330 FEET T COEF FOR CULV PIPE FLOW = TP,094 T COEF FOR CULVERT INLET CONTROL2 WEIR ELEVATION =FEET I FLOW COEF = WATER ELEVATION = Z—J 3 j4 FEET )CITY= 0 51 FPS HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 001 HEADWATER ELEVATION = 1634 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = HEADWATER ELEVA #DIV/0f 135 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 FLOWRATE = CFS MANNINGS n = IIINCHES DIA FOR CULVERT PIPE =INCHES DIA FOR RISER = LENGTH OF CULVERT PIPE = 9 FEET INV IN ELEV OF CULVERT = 1229 FEET INV OUT ELEV OF CULVERT = 1220 FEET INLET COEF FOR CULV PIPE FLOW = INLET COEF FORCULVERT INLET CONTROL =RISER Evoll WEIR ELEVATION FEET WEIR FLOW COEF = TAILWATER ELEVATION = 16 29 FEET VELOCITY= 3 50 FPS TAR WATER IINKNOWN = 7FRn fm r-1 ELEVATION CALCULATIONS CFS AANNINGS n = - U:F7 r )IA FOR CULVERT PIPE = INCHES )IA FOR RISER = INCHES -ENGTH OF CULVERT PIPE = 62 FEET NV IN ELEV OF CULVERT = 12 60 FEET NV OUT ELEV OF CULVERT = 12 29 FEET INLET COEF FOR CULV PIPE FLOW = INLET COEF FOR CULVERT INLET CONTROL =21SER WEIR ELEVATION FEET M NEIR FLOW COEF = FAILWATER ELEVATION = 16 59 FEET /FLOCITY= 3 34 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 053 HEADWATER ELEVATION = 13 82 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 030 HEADWATER ELEVATION = 16 59 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 048 HEADWATER ELEVATION = 1408 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD - 037 HEADWATER ELEVATION = 1697 HEADWATER ELEVATION ASSUMING WEIR FLOW oll-2 #DIV/01 #DIV/01 Family Entertainment Center Culvert Hydraulics Apni 2008 SD137 HEADWATER ELEVATION CALCULATIONS FLOWRATE — CFS MANNINGS nDIA FOR CULVERT PIPE _INCHES MIINCHIES DIA FOR RISER= LENGTH OF CULVERT PIPE = 9 FEET INV IN ELEV OF CULVERT = 12 69 FEET INV OUT ELEV OF CULVERT = 12 60 FEET ' INLET COEF FOR CULV PIPE FLOW = Oa5 INLET COEF FOR CULVERT INLET CONTROL = o6 RISER WEIR ELEVATION = u©'0Q FEET WEIR FLOW COEF = �0 TAILWATER ELEVATION = 1i6 9r FEET VELOCITY= 3 15 FPS TAII WATER IINKNnWN = 7FRn (Ol U." ELEVATION CALCULATIONS CFS MANNING) n = V" F4 DIA FOR CULVERT PIPE = ; INCHES DIA FOR RISER = K " INCHES LENGTH OF CULVERT PIPE = 62'FEET INV IN ELEV OF CULVERT = 13 00 FEET INV OUT ELEV OF CULVERT = 12 69 FEET INLET COEF FOR CULV PIPE FLOW = 6i" INLET COEF FOR CULVERT INLET CONTROL = 0 RISER WEIR ELEVATION = JVQ FEET WEIR FLOW COEF = 0 TAILWATER ELEVATION = 17 21 FEET VELOCITY= 2 99 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 043 HEADWATER ELEVATION = 1412 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 025 HEADWATER ELEVATION = 1721 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET HEAD = 039 HEADWATER ELEVATION = 1439 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 030 HEADWATER ELEVATION = 17 51 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 39 TER ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apn1 2008 "AAM` BICFS MANNINUi > n = fJzu I,G DIA FOR CULVERT PIPE = INCHES ,, DIA FOR RISER = INCHES LENGTH OF CULVERT PIPE = 56 FEET INV IN ELEV OF CULVERT = 1330 FEET INV OUT ELEV OF CULVERT = 1300 FEET INLET COEF FOR CULV PIPE FLOW = ,0. INLET COEF FOR CULVERT INLET CONTROL - }� = _ RISER WEIR ELEVATION = 0 4Q FEET WEIR FLOW COEF = u a TAILWATER ELEVATION = 1751 FEET VELOCITY= 1 02 FPS 40 TER ELEVATION CALCULATIONS CFS AANNINL3b n = ! ' e-I v )IA FOR CULVERT PIPE = 1 INCHES )IA FOR RISER = INCHES _ENGTH OF CULVERT PIPE = 27 FEET NV IN ELEV OF CULVERT - 13.50 FEET NV OUT ELEV OF CULVERT = 13 30 FEET INLET COEF FOR CULV PIPE FLOW = .T� INLET COEF FOR CULVERT INLET CONTROL - 0 USER WEIR ELEVATION = i1gQ4 FEET NEIR FLOW COEF = ffi' rAILWATER ELEVATION = 1Sy FEET /ELOCITY= 051 FPS HEADWATER ELEVATION ASSUMING INLET HEAD = 004 HEADWATER ELEVATION = 1384 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 005 HEADWATER ELEVATION = 1756 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD - #DIV/OI HEADWATER ELEVATION = #DIV/01 HEADWATER ELEVATION ASSUMING INLET CONTROLI HEAD = 001 HEADWATER ELEVATION = 1401 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD - 001 HEADWATER ELEVATION = 1757 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/01 HEADWATER ELEVATION = #DIV/01 14 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 NRATE _ CFS NINGS n = HEADWATER ELEVATION ASSUMING INLET CONTROL FOR CULVERT PIPE = INCHES MINCHES FOR RISER = HEAD = 029 3TH OF CULVERT PIPE = 9 FEET HEADWATER ELEVATION = 1449 IN ELEV OF CULVERT = 1320 FEET OUT ELEV OF CULVERT = 1300 FEET T COEF FOR CULV PIPE FLOW = 0 5 HEADWATER ELEVATION ASSUMING PIPE FLOW T COEF FOR CULVERT INLET CONTROL = :6 R WEIR ELEVATION = * FEET HEAD = 0 16 FLOW COEF = `� t HEADWATER ELEVATION = 1768 WATER ELEVATION = V7155 FEET )CITY= 2 58 FPS 142 ELEVATION CALCULATIONS HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/Oi HEADWATER ELEVATION = #DIV/Oi NRATE = CFS NINGS n = HEADWATER ELEVATION ASSUMING INLET CON FOR CULVERT PIPE _ W7— INCHES FOR RISER = INCHES HEAD = 025 NTH OF CULVERT PIPE = 62 FEET HEADWATER ELEVATION = 15 25 IN ELEV OF CULVERT = 14.00 FEET OUT ELEV OF CULVERT = 13.20 FEET T COEF FOR CULV PIPE FLOW = 0 5 HEADWATER ELEVATION ASSUMING PIPE FLOW T COEF FOR CULVERT INLET CONTROL = x R WEIR ELEVATION = 6" FEET HEAD = 019 t FLOW COEF = HEADWATER ELEVATION = 1787 WATER ELEVATION = 1768 FEET )CITY= 239 FPS HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/Oi 143 ELEVATION CALCULATIONS Family Entertainment Center Culvert Hydraulics Apnl 2008 FLOWRATE CIRRI ;rQCFS MANNINGS n = O�fl'T _ DIA FOR CULVERT PIPEsil INCHES DIA FOR RISER = INCHES LENGTH OF CULVERT PIPE = 73 FEET INV IN ELEV OF CULVERT = 1400 FEET INV OUT ELEV OF CULVERT = TO 00 FEET INLET COEF FOR CULV PIPE FLOW = Q INLET COEF FOR CULVERT INLET CONTROL = 0�6 RISER WEIR ELEVATION = 00 FEET WEIR FLOW COEF = f TAILWATER ELEVATION = 11 96 FEET VELOCITY= 0 64 FPS HEADWATER ELEVATION ASSUMING INLET HEAD — 002 HEADWATER ELEVATION = 1452 HEADWATER ELEVATION ASSUMING PIPE FLOW HEAD = 002 HEADWATER ELEVATION = 11 98 HEADWATER ELEVATION ASSUMING WEIR FLOW HEAD = #DIV/Oi HEADWATER ELEVATION = #DIV/01 Outlet Plpe d50 La 3Do W dmax Apron Size (Do) Thickness All Rip -Rap at Pipe Outlets 36 06 18 9 21 09 1 35 42 08 22 105 25 5 1 2 1 8 Stormwater Pond Emergency Spillways 40' Weir 08 18 40 60 1 2 1 8 I SEDIMENT BASINS Family Entertainment Center Sediment Basin April 2008 Sediment Area of Volume of Volume of Max Pool Required 75% Surface Area Volume of BASIN I D Disturbance Q10 Sediment Storage Storage Required Depth Surface Area Provided Storage Provides (AC) (cfs) per Acre (CF) (Ft) (SF) (SF) (CF) 697,:c, x y 4= 1171 1 * Area of Disturbance is taken to be the entire Pond/Sediment Basin Drainage Area ** The required surface areas given correspond to Sediment Traps with effiency of 75% *** Bottom of pond taken to be at 1' MSL, above the SW required 1 foot of sediment storage ighted "C" 11 SW Pond No 7 * Total Imoervious Area used is the Total for all Phases drainino to the nond ** Provided Storage Volume given is the volume between the PP and the SP elevations r• '� t`'rttiv '�y� M < r wVy ^iG dk sr4 s ! v v s>•:-x. :"i :a 'Y q, rvJ"'3b <° ,yr..{`d �Itixt^`aRiir7x i� aft^` tr 00r}lli+l ia`G d 11 11 11 4 i ,ut M.a F t ;, „fi•'F u� 'Y'r xs / a ++�4.A kF a f�," - 6i"rTr�'Y 'M vs • i x #. Ap > 3 1 r7+ +. oil e r, t r (• i k t F� 9 1� �� f t -'� r . �i F 1 a 'ten nr r u y i + M1 " jjIk roy+ th rL °f 1 k e;::i F A 1y S 1 yN ��,�t�fi _p, k 1� ,,.at-�r.,• is 1 9.1 t �h3 y C`L rF SSr a hk•v tAM 13� M� rY 1 A{.1' tt trk;k4r t, it, f_ r i� ` tV } •� a � 1 f>1 tx t h zl�`Y' �v♦ F st k +�� �i I � � T r '� rt a F Yc. `{, ,j'St1t r • 1 t i t* f�'_'{<< ka, A x µ�� +q•F' •x '.i + 'tom ti rt �� tt c5w,t4 ! Tp1 4 9g9 }S a`4a /:.It'}°j"'+, r s\ f "05, t ja:v, r. �'v' rk + M t .. a h i✓r?I,. -„ y� ara gie'1F�s`. v rsv -,st.1 555... a Y}., • t f '1' � 3 `� r �" � �•k r R.h: � . trttti+" _ � S ` _ � r, a r 'r�� r }i�5�• N v r vv o} y j x� � �tM 't i'W t"tk, r ° 4}n +• �` yat fit��� . t .F"�4 v ,y, � `:Y3•.y f l A� w ,� r ;fe ¢ a v y s ,t c t �i ` ,a'�, i'p� F`5 ,t�A r r c � � x . ay. �� I :�� v +.: � 1 _ • from four to six feet below the surface Proper site drainage is critical to the long-term performance of foundation and pavement elements 2 2 Subsurface Conditions The site is generally level and slopes toward the creek north of the site The majority of the soil strata consisted generally of loose to very dense sands The upper and lower sand strata are separated by a layer of very soft to soft sandy clays and silts at a depth of approximately 5 feet and extending to approximately 11 feet beneath existing ground surface The materials of these strata were deposited in a backbarner depositional environment Although the soundings were planned for target depths of from 30 to 50 feet the cone refused to advance at a depth of approximately 20 feet The soils exhibited point stress values ranging from 2 10 tons per square foot (tsf) in the clay layer and to 758 84 tsf in the sands The sleeve friction ranged from —0 02 tsf to 8 20 tsf and the pore pressure was recorded at from -8 22 psi to 584 13 psi 21 Groundwater Analysis of the CPT records indicates the phreatic surface of groundwater to be at an approximate depth of 7 to 9 feet Groundwater depths will be largely controlled by climate and seasonal conditions The groundwater surface is subject to rise on a regular basis as a result of precipitation and/or infiltration Capillary action within the sod pore spaces also affects the moisture content of soils above the groundwater phreatic surface The effects of shallow and/or fluctuating groundwater can be minimized by establishing good site drainage prior to construction and maintaining good site drainage during and after construction 3 0 SEISMIC CONSIDERATIONS The southeastern United States has a complex geologic history Specific geologic structures or faults capable of generating large seismic events have not been well identified The Charleston Epicentral Area includes the area around Charleston and Bowman, South Carolina An abnormally high historic seismic activity level distinguishes this area from the remainder of the Coastal Plain, which has virtually no recorded seismic activity In August, 1886, one of the most destructive seismic events in U S history struck the Charleston area This seismic event had an epicenter approximately one -hundred (100) miles southwest of the project site This earthquake of epicentral intensity of Mercalli Magnitude X was perceptible over an area of over two million (2,000,000) square miles More than four hundred (400) seismic events of lesser intensity have been recorded in the Charleston/Summerville area The earthquake ground motion parameters used in this report were obtained from maps published by the U S Geological Survey which take into consideration the Charleston Epicentral Area seismic history The Charleston Epicentral Area is considered mid -plate of the North American Plate The North American Plate, spans from the Mid -Atlantic Ridge to the Pacific Plate in Southern California and the Juan da Fuca Plate in Washington and Oregon The basic characteristic of the Charleston Epicentral Area is the integrity (intactness) of the underlying rock Earthquakes are typically felt over very large areas (millions of square miles) According to §1615 2 1 of the 2002 North Carolina State Building Code (2002 NCSBC), a seismic event having a two percent probability of exceedance in fifty years (2%/50yrs) is the "standard" design seismic event This seismic event is also termed the Maximum Considered Earthquake (MCE) by the 2002 NCSBC It should be noted that such an event has a return period of approximately 2,500 years Based on seismic maps published by the U S Geologic Survey the peak ground acceleration for this site is assigned a value of 0 16g T IGeorechnicahtYP EC07 GIM Ward's Preserve Phase AReporAWP EC07 GIM Report doe 2