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HomeMy WebLinkAboutSW8940120_HISTORICAL FILE_19990125 (2)STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 g4olm DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE lg99okas YYYYMMDD State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor Wayne McDevitt, Secretary Division of Water Quality January 25, 1999 Mr. Jerry Porter, Owner Jerry Porter Lincoln, Mercury, Isuzu 5501 Market Street Wilmington,NC 28403 4 IT NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Subject: Permit No. SW8 940120 Modification Jerry Porter Parking Lot Expansion High Density Stormwater Project New Hanover County Dear Mr. Porter: The Wilmington Regional Office received a modification to the Stormwater Management Permit Application for Jerry Porter Parking Lot Expansion on September 24, 1998, with final information on November 24, 1998. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. S W8 940120 Modification dated January 25, 1999, for the construction of Jerry Porter Parking Lot Expansion. This permit shall be effective from the date of issuance until January 25, 2009, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative He P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at (910) 395-3900. Sincerely, Rick Shiver Water Quality Regional Supervisor RSS/arl: S:\WQS\STORMWAT\PERMIT\940120.JAN cc: Phil Tripp, P.E. Tony Roberts, New Hanover County Inspections Beth Easley, New Hanover County Engineering Linda Lewis Wilmington Regional Office Central Files 127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50% recycled/]0% post -consumer paper State Stormwater Management Systems Permit No SWS 940120 Modification STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Jerry Porter, Owner Jerry Porter Lincoln, Mercury, Isuzu Parking Lot Expansion New Hanover County FOR THE construction, operation and maintenance of a detention pond in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until January 25, 2009 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described on page 3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from 94,360 square feet of impervious area. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 2 State Stormwater Management Systems Permit No SW8 940120 Modification DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Project Name: Jerry Porter Parking Lot Expansion Permit Number: SW8 940120 Modification Location: New Hanover County Applicant: Mr. Jerry Porter, Owner Mailing Address: Jerry Porter Lincoln, Mercury, Isuzu 5501 Market Street Wilmington, NC 28403 Application Date: September 24, 1998 Water Body Receiving Stormwater Runoff: Spring Branch (CF 18-74-63-1) Classification of Water Body: "C Sw" If Class SA, chloride sampling results: n/a Pond Depth, feet: 6.5 Permanent Pool Elevation, FMSL: 36 Total Impervious Surfaces, ft': 94,360 Offsite Area entering Pond, ft': none, per Engineer Required Surface Area, ft': 4,749 Provided Surface Area, ft': 4,977 Required Storage Volume, ft': 7,552 Provided Storage Volume, ft': 8,478 Temporary Storage Elevation, FMSL: 37.5 Controlling Orifice: 1"$ pipe 3 State Stormwater Management Systems Permit No. SW8 940120 Modification H. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in it's entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface except roads. 2.. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and revegetation of side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping. g. Access to the outlet structure must be available at all times. 4: Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. 5. Decorative spray fountains will not be allowed in the ponds. 6. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 7. 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. 8. 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. 9. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale of any portion of the property. 10. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built -upon area. 11. The runoff from all built -upon area on the project must be directed into the permitted stormwater control system. 12. 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. 0 State Stormwater Management Systems Permit No. SW8 94012n Modification 13. The following items will require a modification to the permit: a. Any revision to the approved plans, regardless of size. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area. e. Further subdivision of the project area. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. In addition, the Director may determine that other revisions to the project should require a modification to the permit. 14. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. III. GENERAL CONDITIONS 1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality accompanied by an application fee, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. 2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143- 215.6C. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all components of the permitted stormwater management facility. 6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. Perin it issued this the 25th day of January, 1999. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION A. Preston Howard, Jr., P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 940120 Modification State Stormwater Management Systems Permit No. SW8 940120 Modification Jerry Porter Parking Lot Expansion Stormwater Permit No. SW8 940120 Modification New Hanover County Engineer's Certification 1, , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. Noted deviations from approved plans and specification: Signature Registration Number Date SEAL 0 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 1. GENERAL INFORMATION Applicants name (specify the name of the corporation, individual, etc. who owns the project): 2. Print Owner/Signing Official's name and title (the person who is legally responsible for the facility and its compliance): Jerry Porter, Owner 3. Mailing Address for person listed in item 2 above: City: Wilmineton State: NC Zip: 28403 Telephone Number: (910) 313-3200 4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Jerry Porter Lincoln, Mercury, Isuzu Parking Expansion 5. Location of Facility (street address): 5501 Market St. City: Wilmington County: New Hanover 6. Directions to facility (from nearest major intersection): approx. 500 If East from the intersection of U.S./ Hwy 17 and NC Hwy 132 7. Latitude : Longitude: 8. Contact person who can answer questions about the facility: of facility Name: Tripp Engineering, P.0 Telephone Number: (9l0) 763-5100 11. PERMIT INFORMATION: Specify whether project is (check one): New Renewal X_ Modification If this application is being submitted as the result of a renewal or modification to an existing permit, list The existing permit number SW8 940120 and its issue date (if known) Form SWU-101 January 1998 Page 1 of Specify the type of project (check one): Low Density X High Density Redevelop General Permit Other 4. Additional Project Requirements (check applicable blanks): CAMA Major X Sedimentation/Erosion Control 404 Permit ❑l. 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 detention pond 2. Stormwater runoff from this project drains to the Cane Fear River basin. 3. Total Project Area: 2.62 _acres 4. Project Built Upon Area: 83 %. 5. How many drainage basins does the project have? 1 6. Complete the following information for each drainage basin. If there are more than two drainage basins in the project, attach an additional sheet with the information for each basin provided in the same format as below. Bas n'Iiifoitnatton `_ ' D"rams[ eRBasm I a . ; ,Drama `e'Basur 2a "t= Receiving Stream Name Smith Creek Receiving Stream Class C SW Drainage Basin Area 114,127 sf Existing Impervious * Area 83,832 sf Proposed Impervious * Area 10,528 sf % Impervious* Area (total) 83% ��Iiri` rvtpris�*�Sui�c Area,at„? On -site Buildings §°" Urun"ezBasrnl N/A �:�Drauii3'e;}Basin^ On -site Streets N/A On -site Parking 10,528 sf On -site Sidewalks N/A Other on -site existing 83,832 sf Off -site N/A Total: E=94,360 sf E= * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas sidewalks, gravel areas, etc. How was the off -site impervious area listed above derived? IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS Deed restrictions and protective covenants are required to be recorded for all low density projects and all subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded. Form S WU-101 January 1998 Page 2 of 4 By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all die items required by the permit, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot. V. AGENT AUTHORIZATION If you wish to designate submittal authority to another individual or firm so that they may provide information on your behalf, please complete this section: Designated agent (individual or firm): Trion Engineering, P.C. Mailing Address: 507 Chestnut Street City: Wilmin on State: NC Zip: 28401 Phone: 910 763-5100 Fax: (910)763-5631 V11. SUBMITTAL REQUIREMENTS This application package will not be accepted by the Division of Water Quality unless all of the applicable items are included with the submittal. 1. Please indicate that you have provided the following required information by signing your initials in the space provided next to each item. LiVs • Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable Supplement Form(s) for each BMP (see Attachment A) • Permit application processing fee (see Attachment A) • Detailed narrative description of stormwater treatment/management • Two copies of plans and specifications, including: - Development/Project name - Engineer and firm - Legend - North arrow - Scale - Revision number and date - Mean high water line - Dimensioned property/project boundary - Location map with named streets or NCSR numbers - Original contours, proposed contours, spot elevations - Details of roads, parking, cul-de-sacs, sidewalks, and curb and gutter - Wetlands delineated, or a note on plans that none exist - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage basins delineated - Vegetated buffers (where required) VI. APPLICANT'S CERTIFICATION I, (print or type name ofperson listed in General Information, item 2) Jerry Porter certify that the information included on this permit application form is correct, that the project will be constructed in conformance with the approved plans, that the deed restrictions in accordance with Attachment A of this form will be recorded with all required permit conditions, and that to the best of my knowledge, the proposed project complies with the requirements of 15A NCAC 2H ,1000. Signature: Title: Form SWU-101 January 1998 Page 3 of 4 Date: ATTACHMENT A 1. Deed Restriction Language The following statement must be recorded for all low density projects and for all projects that involve the subdivision and selling of lots or outparcels: !. No more than _NIA square feet of any lot, including that portion of the right-of-way between the edge of pavement and the front lot line, shall be covered by impervious structures including asphalt, gravel, concrete, brick, stone, slate or similar material but not including wood decking or the surface ofswimming pools. This covenant is intended to insure continued compliance with the stormwater permit issued by the State of North Carolina. The covenant may not be changed or deleted without the consent of the State. 2. No one may fill in, pipe, or alter any roadside Swale except as necessary to provide a minimum driveway crossing. NOTE: If lot sizes vary significantly, the owner/developer must provide an attachment listing each lot number, size and the allowable built upon area for each lot. For commercial projects that have outparcels or future development, the following statements must also be recorded: 3. The connection from the outparcel or future area into the stormwater system must be made into the forebay such that short-circuiting of the .system does not occur. d. All built -upon area from the outparcel or future development must be directed into the permitted stormwater control system. S. Built -upon area in excess of the permitted amount will require a permit modification prior to construction. For curb outlet systems, the following statement in addition to items I and 2 above must be recorded: 6. No one may pipe, fill in or alter any designated I00 foot long grassed Swale used to meet the requirements ofNC'AC 211.1008(g). 2. Supplement Forms The applicable supplement form(s) listed below must be submitted for each BMP specified for this project: Form SWU-102 Wet Detention Basin Supplement Form SWU-103 Infiltration Basin Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Nutrient Management Strategy Supplement 3. Permit Application Fees (check made payable to NCDENR and submitted to the appropriate Regional Office) Type of Permit Low Density High Density Other Director's Certification General Permit New, Modification, or Late Renewal $225 $385 $225 $350 $ 50 Form SWU-101 January 1998 Page 4 of 4 Timely Renewal Without Modification n/a $225 n/a n/a n/a Permit No. 5U)9 Q4UI20 M013 (to be provided by DWQJ State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT T his form may be photocopied for use as an original DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes a wet detention basin supplement for each basin, design calculations, plans and specifications showing all basin and outlet structure details, and a signed and notarized operation and maintenance agreement. 1. PROJECT INFORMATION (please complete the following information): Project Name: Jerry Porter Lincoln, Mercury, Isuzu Parking Expansion Contact Person: Phillip G. Tripp Phone Number: (910) 763-5100 For projects with multiple basins, specify which basin this worksheet applies to: Basin Bottom Elevation 2.95 N.5 ft. Permanent Pool Elevation .0 ft. Temporary Pool Elevation 37.50 ft. Permanent Pool Surface Area 4,977 sq.ft Drainage Area 2.62 sq.ft. Impervious Area 2.166 ac. Permanent Pool Volume 16,175 cu.ft. Temporary Pool Volume 8,478 cu.ft. Forebay Volume N/A cu.ft. SAIDA I used 0.0424 Diameter of Orifice 1.0 in. Design TSS Removal g0 % H. REQUIRED ITEMS CHECKLIST (average elevation of the floor of the basin) (elevation of the orifice) (elevation of the discharge structure overflow) (water surface area at the orifice elevation) (on -site and off -site drainage to the basin) (on -site and off -site drainage to the basin) (combined volume of main basin and forebay) (volume detained above the permanent pool) (surface area to drainage area ratio) (85% TSS removal required, see item k below) The following checklist outlines design requirements per the Stormwater Best Management Practices manual (N.C. Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Form SWU-102 Rev 1/August 1998 Page 1 of 3 Applicants Initials C(7L a. The temporary pool controls runoff from the 1 inch storm event. t4_A b. The basin length to width ratio is greater than 3:1. c. The basin side slopes above the permanent pool are no steeper than 3:1. d. A submerged and vegetated perimeter shelf at less than 6:1 is provided (show detail). Ci e. Vegetation above the permanent pool elevation is specified. �JQ f. An emergency drain is provided to empty the basin. g. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). h. The temporary pool draws down in 2 to 5 days. [,CX- i. A trash rack is provided for both the overflow and orifice. NA, j. The forebay volume is approximately equal to 20% of the total basin volume. C� k. Sediment storage is provided in the permanent pool. NJ,&— I. A 30-foot vegetative filter is provided at the outlet2 (include erosive flow calculations). m. Recorded drainage easement for each basin including access to nearest right-of-way. Coe,, n. A site specific operation and maintenance (0 & M) plan is provided. �� o. A vegetation managementhnowing schedule is provided in the 0 & M plan. (22 p. Semi-annual inspections are specified in the 0 & M plan. C: QC q. A debris check to be performed after every storm event is specified in the 0 & M plan. r. Specific clean -out benchmarks are specified in the 0 & M plan (elevation or depth). _ a s. A legally responsible party is designated in the 0 & M plan3 (include name and title). t. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified to be performed prior to use as a wet detention basin. Footnotes: I When using the Division SAIDA tables, the correct SAIDA ratio for pennanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 The requirement for a vegetative filter may be waived if the wet detention basin is designed to meet 90% TSS removal. 3 The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention system is defined as the wet detention basin, forebay, non-integrated pretreatment Systems (pretreatment other than forebays), and the vegetated filter if one is provided. This system (check one) ❑ does does not incorporate a vegetated filter. This system (check one) ❑ does Pr'd&es not incorporate non-integrated pretreatment. Maintenance activities shall be performed as follows: I. After every significant runoff producing rainfall event and at least monthly: Fornt SWU-102 Rev 1/August 1998 Page 2 of 3 a. Inspect the wet detention system for sediment accumulation, erosion, trash accumulation, grass cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative Cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth. Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.) The original design depth is: 6.50' The sediment removal benchmark depth is: 4.88' 5. Remove cattails and other indigenous wetland plants when they cover 75% of the basin surface. These plants shall be encouraged top grow along the basin perimeter. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent possible. 7. All components of the wet detention basin system shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the above maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of the project, responsible party, or address. Print name: Jerry Porter Addre Phone Title: Signa Date: ,� L_ C,, a Notary Public for the State of County of do hereby certify that S Rtt t-✓- personally appeared before me this d— dayy� if/c/1J 19 9y and acknowledge the due execution of the forgoing infiltratiopy6et, di,menance requirements. Witness my hand and official seal, SEAL My cgni ission expires Form SWU-102 Rev 1/August I998 Page 3 of 3 State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor Wayne McDevitt, Secretary Division of Water Quality November 14, 1998 Mr. Phil Tripp, P.E. Tripp Engineering 507 Chestnut Street Wilmington, NC 28401 ffTQ8?WFJ or ` zTA ; NCDENR ENVIRONMENT AND NATURAL RESOURCES Subject: ACKNOWLEDGEMENT OF RECEIPT AND REQUEST FOR ADDITIONAL INFORMATION Stormwater Project No. SW8 940120 Modification Jerry Porter Lincoln Mercury Expansion New Hanover County Dear Mr. Tripp: The Wilmington Regional Office received a modification to the Stormwater Management Permit Application for Jerry Porter Lincoln Mercury Expansion on September 24, 1998. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: 1. The calculations indicate a depth of 6' below normal pool, and the pond details show the bottom elevation at 30, but the supplement form indicates a new bottom at 29.5. Please revise the details and calculations to indicate a 6.5' depth. 2. Since the revised plans submitted will replace those currently permitted, please place all dimensions for the asphalt and gravel parking areas and the permanent pool on the plans. 3. Please sign a new Operation and Maintenance Plan with the new benchmark cleanout elevations noted. 4. Delineate all wetlands on site, or note on the plans that none exist. 5. Please provide the Engineer's Certification for the pond. 127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper Mr. Tripp November 14, 1998 Stormwater Project No. SW8 940120 Modification Please note that this request for additional information is in response to a preliminary review. The requested information should be received by this Office prior to December 14, 1998, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. The Division is allowed 90 days from the receipt of a completed application to issue the permit. If you have any questions concerning this matter please feel free to call me at (910) 395-3900. Sincerely, Ms. Linda Lewis Environmental Engineer RSS/arl: S:\WQS\STORMWAT\ADDINFO\940120.NOV cc: Linda Lewis Jerry Porter Central Files TRIPP ENGINEERING, P.C. 507 Chestnut Street Wilmington, North Carolina 28401 Phone: (910) 763-5100 • Pax: (910) 763-5631 November 23, 1998 NCDENR Division of Environmental Management Water Quality Section 127 Cardinal Drive Wilmington, NC 28405-3845 Attn: Ms. Linda Lewis Re: Jerry Porter Lincoln, Mercury Isuzu Parking Expansion SW8 940120 Modification New Hanover County, NC TE 98065 Dear Linda: NOV 2 419% In response to your correspondence dated November 14, 1998, we offer the following: I. Calculations and detail have been adjusted to correlate with plan. 2. Dimensioning for existing areas has been provided. 3. A new O & M with clean out benchmarks has been provided. 4. No wetlands are located on this site. 5. An engineering certification has been provided. Please review for approval and contact us with questions or comments, or if you require additional information. Thank you. Sincerely, Tripp Engineering, P.C. Charles D. Cazier, E.I. CDC:jss Enc. 1 11/18198 CDC Total Draina a Area sq. ft. acres 114,127 1 2.62 Impervious Area Land Use s .ft. acres buildings 0 0.00 arkin /as halt and stone 94,360 2.17 concrete 0 ^ CO Total 94,360 2.17 Stormwater Calculations: Time of Concentration Hydraulic Length (L) = 748 ft. change in Height (H) = Tc = (L' /H) ' / 128 0.68 min. Flow for 2 year, 6 hour Storm (00 OPRE _ (CPRE) x (110) x (Area) = 3.31 cfs OPow = (CPosr) x 010) x (Area) 11.00 cfs Soil Storage Capacity for 2 year Storm: CN = (98)(% imp.) + (60)(1-% imp.) = 92 P = 3.30 in, for2yr, 6 hr storm S - 10001CN - 10 = 0.87 Depth (D)= [P-(0.2)(S)]2 1 [P+(0.8)(S)] 2.45 in. Time to Peak Flow: TP = ((43.5)(D)(Area)) / 42POST 25.33 min. Detention Pond Design: Pnnd Rive Elevation ft. Surface Area .ft. Normal Pool 36.00 4,977 Flood Pool 37.50 6,327 Top of Bank 38.00 6,775 Bottom of Pool 29.50 0 Provided Storage Volume: Vol. _ [(Normal pool SA + Flood Pool SA) / 21 x (F.P. elev. - N.P. elev.) 8,478 cu. ft. JERRY PORTER POND ADDITIONS Stormwater Calculations % impervious = 0.827 = 82.7% cay 41 ^05 CPRE - 0.25 Cam- (%imp.)(.95)+(1-%imp.)(.25) 0.83 Iz = 5.06 in/hr ha- 6.30 inlhr Flow for 10 year, 6 hour Storm (010) DPRE _ (CPRE) x (125) x (Area) 4.13 cfs OPOST = (CPOST) x (hs) x (Area) 13.70 cfs CN = (98)(% imp.) + (60)(1-% imp.) 92 P = 4.82 in. for 10 yr, 6 hr storm S = 1000/CN - 10 = 0.87 Depth (D)= [P-(0.2)(S)12 1 IP+(0.8)(S)] 3.91 in. Time to Peak Flow: TP= [(43.5)(D)(Area)] 1 Om,PoeT 32.56 min. State Surface Area Requirement at normalpool: Pond side slopes = 3 :1 Depth below N.P. = 6.5 ft. SA1DA = 0.0424 (Chart for 90% TSS Removal for Wet Detention Pond without Vegetative Filter Required SA = (SA/DA) x (Taal Drainage Area) 4,839 s . ft. State Volume Required for Stomao of first l' of runoff Vol. = [(1/12) x (DA) x (% imp.)[ + [(1/12) x (DA) x (l-% imp.) x C] C - 0.2 8.193 cu. ft. 98065 D E C E I V E NOV 2 41998 D PHOJ If AMjzamon 98065POND.xis 1 of 2 :� ® � ���� �t � ®�� /+�wm®3 " \ ;& Q� 2g �� ~ 7 ®� e � ��2��� :. » a 11/18/98 JERRY PORTER CDC POND ADDITIONS Stonnwater Calculations Pond Volume: Bottom SA = 97.300 sq. ft. Normal Pool SA = 4,977 sq. ft. Vol. _ [(N.P. SA + Bottom SP.) 121 x (N.P. el. - Bottom el.) 332,400 cu. ft. Forebay; Required Volume Vol.' 2096 of storage volume 66,480 cu. ft. -Pond was designed before forebays were required. Outlet Structure Design: Flow for 2-day drawdown: for 19 1' of stormwater, '0 = Provided Vol./ 172,800 sec. (2-days) 0.049 cfs Required Area of Pie for 2-day drawdown: A- 0/ [Cd x SORT(2 x g x h)) Coll = 0.6 g = 322 11./s2 h = (F.P. elev.- N.P. elev.) /2 0.75 ft. A= 0:0118sq. ft. Diameter of Pie for 2-day drawdown: DIA. = SORT((A x 4) / pi] -= 0.1224 ft. 1.47 in. Outlet Structure Check: Using a 6' x 6' Basin, Perimeter (L) = 24 ft. 0 = CIA C = (% imp)(.95) + (1-% imp.)(.25) 0.83 1 = 6.30 in. for a 25 yr. Storm A = 2.62 Acres 13.70 eta 0= Cwx Lx H' s H= [0/(CwxQj] Cw- 3 0.33 ft. Peak elevation = flood pool elevation + H 37.83 ft. Provided Volume Bottom SA = 0 sq. ft. Normal Pool SA = 0 sq. ft. Vol. _ [(N.P. SA + Bottom SA) / 21 x (N.P. el. - Bottom el.) = 0 cu. ft. depth = 0 ft. Flow for 5-day drawdown: for 1st 1' of stormwater, 0 = Provided Vol./ 432,000 sec.(5-days) 0.020 ch Required Area of Pipe for 5-day drawdown: A= 0/[Cal x SORT(2 x g x h)] Cd - 0.6 9. 32.2 Us h - (F.P, elev. - N.P. elev.) / 2 0.75 ft. A = 0.0047 sq. ft. Diameter of Pie for 5-day drawdown: DIA. = SORT[(A x 4) / pi] 0,0774 ft. 0.93 in. 98065 98065POND.xls 2 of 2 11/18t98 CDC JERRY PORTER- 10 Year Storm Pipe Calculations 98065 LOCATION AREA RUNOFF COEFF. C RAIN INT. I In/er FLOW PIPE DATA FROM TO SUB TOTAL Acre TOTAL Acre OaC1A (C.F.S. REO'D TYPEkNLENGTH N S% SIZE In VEL. (FULL) s O AVAIL. cfs HI INV. LOW INV. ELEV. HEAD ftDro Inlet #1 SDMH 91 0.34 0.84 6.30 1.79 RCP 80 0.31% 12 2.3 2.16 35.50 35.25 0.25 SDMH 01 SDMHY2 0.34 0.84 6.30 1.79 RCP 30 0.33% 112 2.3 2.23 35.25 35.15 0.10 SDMH#2 FES 0.34 0.84 6.30 1.79 RCP 20 0.25% 12 2.3 1.94 35.15 35.10 0.05 i TRIPP ENGINEERING, P.C. 0 507 Chestnut Street Wilmington, North Carolina 28401 Phone: (910) 763-5 100 . Fax: (9 10) 763-5631 September23, 1998 lRIE�tSEp 2 4 1998 NCDENR Division of Environmental Management Water Quality Section 127 Cardinal Drive Wilmington, NC 28405-3845 Attn: Ms. Linda Lewis Re: Jerry Porter Lincoln, Mercury, Isuzu Parking Expansion New Hanover County, NC SW8 940120 TE No. 98065 Dear Linda: Enclosed please find two (2) sets of plans, one (1) signed original and one (1) copy of the application form, two (2) sets of sealed calculations, and one (1) check to cover the application fee. We are applying for a modification to an existing permit as referenced above. you. M� Please review for approval and contact us with any questions or comments. Thank Sincerely, T p Engine ring, P.C. * ' Phillip G. Tripp, P.E. PG,r:iss Enc. T )- E • 39.64 - - • 3 - - -�� •- - - - - - - - TWI4-WAY ACCESS EXIST. MARL AREA----y \ I ..-• 39.10 00 VICINITY MAP • 3@ D3 _ 9 • 38.79 ` NTS EXISTING DETENTION POND as TOP 38.0 FLOOD FPOOL K 377.5 ® oIP . D.I. 1 .38 NORMAL POOL 36.0 / i INV. 35.05 11 / / + BOTTOM 30.0� i j 3s3 j 11 i 1 NEW BO---------------- OM �� 1, 12" F.E.S. INV. 35r1 �\ /I if I 1 �11 1 i , I--7--I--T--1--I--T----T- w/5'x5'x12" E.D. l 3P.9 INV. 35.32 I 'I I I I I I I I I I I 0C I I Ir �I INV 35121j I 38.49 ,/ SDMH NO.12 it / '••• I I 1 TOP 38.0/ INV. 35.15 i ° �3 jd I 1 EXIST. ASPHALT AREA i , _ _ - 1^� � • 3 40 1 � 1 ,• .I '96 j.4V.46 1 \ �!sr 1 IRCP I ;_ __ _ • 37.50�_ \So I I I I I I 1 I ' • 35.423 _ `\ EXIST. SDMH I I I I I I 1 - \ • 36 22'j T 3�.75 TOP 37.71 I I I I I I I 1 I ( I 1 REPLACE ,EXISTING x2OUTLET \ INV. 35.76 - I _ -I - _ I _ I _ _ _I - _ _ I - I_ - - -J I I� STRUCTURE w/4'x4y OUTLET STRUCTU E I I I I I I 18"PIP / EXISTING OP 37.3�i \ J ADJUST T(' P TO 37.5 • 3I 64 L,( Z_ INV. 31 4 T EXISTING TREE AREA , SDMH NO. 1 RBED a 5 ( t I I I I I I I TO REMAIN UNDISTURBED � TOP 37.0 � II •�' 37 87 EXIST. D.I. 9 "M1AI '�INV. 35.25 / / I �I TOP 37.50 i I I I II I / .?4 f I ANY. 35.80 I (PROPOSED SPOTi 1 t • 37.65 JERRY PORTER } TQ COVER PIPE 4V ,� 1 1 I I91 DB. 67 PG. 101 •37.38 / 9 OF EARTH 1 I DB. 1357 PG.1096 DB. 1700 PG. 789 1 - / 1 Q PI E 82 1 I- 'I®j35.4 „ •, 5.sa1'1 - 37.92 Nr0D IMITS t • 37.54 I oF 36.26--_ISIORSANCE - 3N1?b I I _ ._ _._ _- __ I-- . I i I I I I- I 36 2001 uM t4. i I 814 MOO wwwwwwwOONO6DJ.1�3 6.9 RIM12 GM 3sa1 XISTING INV. 3�T�uM f1 {1II , *, 3-11II 09 1IIII _ 1II1�III,-\\I-III _ I _ o O BE JI 1J I --- --- 1 E 's ye6 1 \ �� i I' • 3b.19 I • 318.38 1 1\ 1 I I I I I 1 / -- - • \ p /� 00) `` $ c0 \ < E I;iL D.I. 37.47 Il.7rtih 1� 1 �' � LIMITS ;16 1'^ w 1 �" D STURBANCE !S �� • 37.13 \-EXISTING ASPHAL \ _ I d Fsti 13 44 ° 38.42 � w J� �ITMATS EXII TANG HARRY STOVALL I I!I ASPII T GkADE 8.4E I / DB. 1230 PG. 1072 to ti I 1 - I I \ I ---- 37. 0 0 • 37.75 ss� °.-° ' I¢ 38.691 N • 37 > 38.521 1 I I_ I I i I --- - • 37.61 0 } V - �7h ni CREPE y0' ��� z 1 d3P ® ro 37.1 0 N ,. LIMITS • 37.86 g / DISTURBANCE I �• 3z7a Ty Ii MATCH EXISTING _ : / 'T\ ' 8 3 ASpHAIT GRADE 3)8.3t _ -- N 38.01 ' 1 ' / 1 38.02 • 55 A� •. I I� `?; '' �g� 9.37 39.31 t \ 0 .38 1 I G EPA- I 39.41 11 39.35 39.57 1 I RE E • 7.78 I RTLE 1 ' MYR'�. LE • 3 �}y'�,'A-00 EX8.25D.l. �7.4 (325) .� 8 ' LA y II f 11 11 11 3�5.67 II II II Ii i 1 I I / TOP 336.g�gg ® 6 319� lb CpCb �_V 8. 4 ) .� 1��-.0.:38-97L _I - _.. -1 _ �I 39.52 II II L = -1 _ - I- - INV. 34387 • 37.58 !'� 3 ! 6 \° 37. 4 'M�l 7 Vtc35;= - - 1 II • 38.82 38.6 '70 8' REE7q D TOPS3738- i -' S7 EXIST. SSMH 39.69 11 - - - _ �R _ '-33:97- 9.42 • TOP 39.72 g 3s. rS70 W 1"' �104.409.80•'39.56 • - N1lgp �39.49 ===== 39.58 �39.43 ==='39.63 �39ti=----=�336�r==== MARKET STREET _U.S. HIGHWAY 417 (RIGHT OF WAY VARIES) LEGEND -- -36 - EXISTING CONTOUR PROPOSED SPOT ELEVATION STORMWATER RUNOFF DIRECTION CONCRETE EXTRUDED CURB (325) PROPOSED LANDSCAPING w/AREA SITE PLW 1 = 20 NOTE: "NO WETLANDS ON SITE" SITE DATA TOTAL AREA ZONING PARKING SPACES PROVIDED ASPHALT AREA LANDSCAPING AREA REQUIRED: LANDSCAPING AREA PROVIDED: 0.338 ACRES B-2 35 10,528 SF 842 SF 875 SF GALV. BAR GRATING - 1' x 1//8' TYPE J CLIPS. ATTACH TO 1-1/4- ANGLE FRAME MORTOR FRAME TO TOP OF BANK 38.0 !ill�ti!:7ti m MAv ISE BRICK KW WAX CORBEL 1' PER COURSE MAY USE ECCENTRIC M.H. UNIT R Cm"-h r- PRECAST 4' MISER FIND I DRAIN � 9„ Ivor I runnnr% 12' OC PAVEMENT SECTION - 2X4 WOOD APPROVED NORTH CAROLISA ENVIRONh'.ENTAL MANAGEMENT COMMISSION DIVISION OF WATER QUALITY oms 2S DAI-j (ggq -4-rx Stormwatar Parma N„ SW c�g4Ul�019 ATTACH GALVANIZED WARE CLOTH OCR SMALL DIAMETER ORIFICE (8 MESH .020 WARE) LANDSCAPING IS REQUIRED FOR PARKING LOTS FOR THE PURPOSES OF REDUCING AESTHETIC IMPACTS OF PAVING OR REMOVING THE NATURE VEGETATION FROM LARGE AREAS TO REDUCE THE NOISE, HEAT AND DUST ASSOCIATED WITH PARKING LOTS: AND OTHER PURPOSES AS LISTED IN SECTION 67-1. (1) APPLICABILITY - LANDSCAPING SHALL BE REQUIRED FOR ALL OFF-STREET PARKING FACILITIES WITH FIVE OR MORE SPACES OR THOSE AREAS 2500 SQUARE FEET OF MORE DEVOTED FOR VEHICULAR USE A LANDSCAPING PLAN SMALL Be SUBMITTED N ACCORDANCE WITH SECTION 67-8. (2) DESIGN CRTERW LANDSCAPING SHALL BE REQUIRED FOR PARKING LOT PERIMETERS AND FOR PARKING LOT INTERIORS. (A) PARKING LOT PERIMETERS - A LANDSCAPED STRIP EIGFT (8) FEET IN WIDTH SHALL BE REQUIRED ALONG ANY SIDE OF A PARKING LOT OR RESIDENTIALLY ZONED PROPERTY. THIS LANDSCAPING SMALL CONSIST OF , AT A MINIMUM, ONE EVERGREEN OR DECIDUOUS TREE EVERY EIGHTEEN (18) TO TWENTY-SEVEN (27) FEET. IF A BUFFER STRIP IS REQUIRED N ACCORDANCE w rw SECTION 657-4. THAN THE TEN FOOT WIDTH MAY BE INCLUDED AS PART OF THE BUFFER STRIP. (4/2/90) (B) PARKING LOT INTERIORS - INTERIOR LANCSCAPNG IS DEFINED AS THE LANDSCAPING REQUIRED WITHIN THE PARKING LOT PERIMETERS. INTERIOR LANDSCAPING SHALL BE PROVIDED EQUAL TO OX OF THE TOTAL AREA TO BE USED FOR PARKING, LOADING -AREA, OR FOR OTHER VEHICULAR USE OF PEDESTRIAN USE INTERIOR LANDSCAPING SHN1 BE N THE FORM OF PLANTING ISLANDS, EITHER SEPARATE OR PROTRUDING FROM THE PERIMETER LANDSCAPING. EACH ISLAND SHALL HAVE NO HORIZONTAL DIMENSION OF LESS THAN TWELVE (12) FEET. (4/2/90) EACH ISLAND SHALL HAVE NO LESS THAN ONE PLANTED OR EXISTING TREE PER ISLAND, WITH APPROPRIATE GROUNDCDVER. NO PARKING SPACE SHALL BE LOCATED MORE THAN ONE HUNDRED AND TWENTY FEET FROM A PLANTING ISLAND. ALL PARKING SPACES SHALL BE BLOCKED OR CURBED TO PREVENT VEHICLES ERHE7R FROM OVERHANGING PLANING ISLANDS OR LANDSCAPED YARDS BY AN AVERAGE OF MORE THAN ONE FOOT OR DAMAGING ADJACENT FENCES OR SCEENS. (3/9/E8) MAINTENANCE (1) ALL EXISTING VEGETATION THAT IS USED TO MEET LANDSCAPING REQUIREMENTS, ALL REQUIRED PLANTED LIVING MATERIAL, AND ALL REQUIRED BERMS SHALL BE MAINTAINED BY THE OWNER OF THE PROPERTY ON A CONTINUING BASIS FOR THE LIFE OF THE DEVELOPMENT. (3/9/88) (2) ARTIFICIAL FENCING SHALL BE MAINTAINED, CLEANED AND REPAIRED BY THE OWNER OF THE PROPERTY ON A CONTINUING BASIS FDR THE LIFE OF THE DEVELOPMENT. SUCH FENCING SHALL BE KEPT FREE OF LITTER AND ADVERTISING. ly r PLAN_ FOR PIPE I-' I r-T-T-� I I 00 -t-I' H# fflN ARD INLETS GONG. COLLAR L- - - - -- GONG. 1 .._ i� ASPHALT PAYMENT �n cv UADKM BRICK ,N ,�' , tll a� 'Y a DROP DETAIL ro � II II V U ,�-2M WOOD FRAME SITE WORK NOTES REVISIONS 1. THE CONTRACTOR SHALL VISIT THE SITE AND BECOME FAMILIARIZED WITH EXISTING °• Description B CONDTIONS BOTH ON AND IMMEDIATELY ADJACENT TO THE SITE. 1:eY 2. CLEARING: CONTRACTOR SHALL REMOVE ALL TREES AND VEGETATION WITHIN LIMITS OF CONSTRUCTION UNLESS OTHERWISE DESIGNATED TO REMAIN. 3. GRUBBING AND STRIPPING: CONTRACTOR SHALL RAKE AND REMOVE ROOTS, STUMPS, VEGETATION, DEBRIS, EXISTING STRUCTURES ABOVE AND BELOW GRADE, ORGANIC MATERIAL OR ANY OTHER UNSUITABLE MATERIAL WITHIN LIMITS OF CONSTRUCTION. 4. MUCKING: CONTRACTOR SHALL COORDINATE WITH OWNER AND THEIR GEOTECHNICAL REPRESENTATIVE TO COORDINATE REMOVAL OF ANY SOFT AREAS. 5. DISPOSAL: CLEARED, GRUBBED, STRIPPED OR OTHER WASTE MATERIAL SHALL BE REMOVED FROM SITE AND DISPOSED OF IN A PROPERLY PERMITTED FACILITY. 6. FILL AND COMPACTION SHOULD COMPLY WITH GEOTECHNICAL REPORT. 7. THE CONTRACTOR SHALL NOTE THAT THE GRADING PLAN MAY NOT REPRESENT A BALANCED EARTHANORK CONDITION. THE CONTRACTOR SHALL BE RESPONSIBLE FOR CUT AND FILL QUANTITIES AND COMPLETE INSTALLATION TO SPECIFIED GRADES. 8. THE CONTRACTOR SHALL FURNISH SUITABLE BORROW MATERIAL FROM AN OFF -SITE PROPERLY PERMITTED FACILITY AS REQUIRED. 9. THE CONTRACTOR IS RESPONSIBLE FOR THE LOCATION AND PROTECTION OF ALL EXISTING UTIUTIES DURING CONSTRUCTION. BEFORE COMMENCING ANY EXCAVATIONS IN OR ALONG ROADWAYS OR RIGHT-OF-WAYS, PUBLIC AREAS OR IN PRIVATE EASEMENTS. THE CONTRACTOR SHALL NOTIFY ALL APPROPRIATE PERSONNEL OF THEIR INTENT TO EXCAVATE, IN WRITING, NOT LESS THAN 10 DAYS PRIOR TO EXCAVATING. 10. THE CONTRACTOR SHALL BE RESPONSIBLE TO COORDINATE DISCONNECTION/ RECONNECTION AND/OR THE RELOCATION OF ALL EXISTING UTILITIES WITH APPROPRIATE PERSONNEL. 11. EXISTING SURVEYING PERFORMED BY STOCKS LAND SURVEYING, P.C. AND SUPPLIED BY THE OWNER. F�1 12. THE CONTRACTOR SHALL FIELD VERIFY ALL DIMENSIONS AT THE SITE. FURTHERMORE Fes./ THE CONTRACTOR SHALL REPORT ALL DISCREPANCIES OR QUESTIONS TO THE ENGINEER N PRIOR TO INSTALLATION. 13. THE CONTRACTOR SHALL PROVIDE ANY AND ALL LAYOUT REQUIRED TO CONSTRUCT HIS WORK UNLESS OTHERWISE DIRECTED BY OWNER. 14. ALL PVC UTILITY MANS SHALL BE INSTALLED WITH A MINIMUM OF 36" COVER AT FINAL GRADE. r'/1 15. ALL SERVICE CONNECTIONS SHALL BE INSTALLED TO MEET ALL LOCAL AND STATE CODES. V 1 METERS, TAPS, MATERIALS, WORKMANSHIP AND ALL FEES SHALL BE THE RESPONSIBILITY FBI OF THE CONTRACTOR AND SHALL COMPLY WITH ALL REQUIREMENTS. 16. ALL PAVEMENT, BASE AND SUBGPADE SHALL COMFORM TO NCDOT STANDARDS INCLUDING WORKMANSHIP, MATERIALS AND EQUIPMENT. APPROPRIATE BARRICADES, SIGNS, LIGHTS " w OR OTHER TRAFFIC CONTROL DEVICES SHALL BE PROVIDED IN ACCORDANCE WITH NCDOT TO MAINTAIN SAFETY AND TWO WAY TRAFFIC. 17. ALL AREAS SHALL BE GRADED FOR POSITIVE DRAINAGE. THE CONTRACTOR SHALL REPORT W ANY DISCREPANCIES TO THE ENGINEER PRIOR TO INSTALLATION. ALL AREAS SHALL BE SLOPED TO DRAIN AWAY FROM BUILDINGS AT ALL TIMES. 18. CONCRETE STORM DRAINAGE PIPE SHALL BE CLASS III WITH RUBBER GASKETED JOINTS AND INSTALLED IN ACCORDANCE WITH MANUFACTURER'S REQUIREMENTS. M'7' 19. USE WHITE LANE MARKING PANT FOR ALL PAVEMENT MARKINGS. PANT SHALL BE A z CHLORINATED RUBBER ALKYD, FS TT-P-115, TYPE III, FACTORY MIXED, QUICK DRYING, NON BLEEDING. REFLECTIVE MATERIAL MAY BE ADDED AT OWNER'S OPTION FOR O N NIGHT REFLECTING. �,.1..) 20. DUCTILE IRON SHALL BE CLASS 51. r 21, CONCRETE FOR WALKS, CURBS AND DRIVES SHALL HAVE A MINIMUMN COMPRESSIVE w STRENGTH OF 3000 PSI O 28 DAYS - AR ENTRAINED. z 22. FIELD TESTING SHALL BE DONE BY AN INDEPENDENT TESTING LABORATORY PAD FOR 0 BY THE OWNER. FURTHER TESTING REQUIRED DUE TO A FAILED TEST WILL BE PAD FOR BY THE CONTRACTOR. F••I 23. SEE GEOTECHNICAL REPORT NO. ___, DATED , By M FOR ADDTIONAL REQUIREMENTS. w CONSTR JRL MIN SEQUENCE O E" 1. NO CUT SLOPE OR FILL SLOPE SHALL EXCEED A RISE OR FALL OF ONE FOOT FOR EVERY RUN OF 3 FEET (1 VERTICAL TO 3 HORIZONTAL). 1� 2. NO SEDIMENT WILL BE ALLOWED TO EXIT THE SITE. ALL EROSION SHALL BE CONTROLLED Pq O INCLUDING SIDE SLOPES DURING AND AFTER CONSTRUCTION. 3. INSTALL PRIMARY EROSION CONTROL MEASURES BEFORE BEGINNING CONSTRUCTION INCLUDING r l O O BUT NOT UMITED TO GRAVELLED CONSTRUCTION ENTRANCE, SILT FENCE, CHECK DAMS, ETC. tt�t'w...lIJJJ== N INSTALL ALL SECONDARY EROSION CONTROL MEASURES AS SOON AS POSSIBLE AFTER BEGINNING W 0 W CONSTRUCTION. 4. ALL EROSION CONTROL MEASURES TO BE INSPECTED AFTER EACH RAN. -9:4 SILT FENCE, SILT TRAPS, AND INLET PROTECTION TO BE CLEANED WHEN HALF FULL. ��jjFBI 5. IF APPLICABLE, CONSTRUCT PROPOSED RETENTION POND TO ACT AS A SEDIMENT BASIN L••7► a Z V S. DURING CONSTRUCTION. REMOVE ACCUMULATION OF SILT AS REQUIRED TO ALLOW PROPER Z N FUNCTIONING. RESTORE POND TO DESIGN LEVELS AT THE COMPLETION OF CONSTRUCTION. 6. IF APPLICABLE, INSTALL DROP INLETS WITH INLET PROTECTION TO ACT AS SILT TRAPS FF LQijl, DURING CONSTRUCTION. REMOVE ACCUMULATED SILT AS NEEDED TO PREVENT SILT FROM ENTERING STORM GRAN PIPING. F_I /rWy-I 7. A 4' LAYER OF TOPSOIL SHALL BE APPLIED TO ALL NEW AREAS TO BE GRASSED. B. ALL DISTURBED AREAS SHALL BE SEEDED IN ACCORDANCE WITH SEEDING SCHEDULE AS W SOON AS POSSIBLE BUT NO LATER THAN 30 DAYS AFTER DISTURBANCE. 9. MAINTAINALL EROSION CONTROL MEASURES PROJECT IS COMPLETE. W � r , O 10. MORERESTRINGENT MEASURES MAY BE REQUIREDRED E TO HALT EROSION IF THOSE ON THIS w z PLAN PROVE TO BE LESS EFFECTIVE. 11. REMOVE ALL TEMPORARY EROSION CONTROL MEASURES UPON COMPLETION OF CONSTRUCTION. ALL PERMANENT MEASURES SHALL BE WELL ESTABLISHED PRIOR TO PROJECT COMPLETION. F" PERMANENT GRASSING DETAIL `,Z, O0 SEEDING MIXTURE 0 1­4 MUHL RATE fib/gam)E A' �4 Z PENSA'bLA BAMAORASS �w A' SERICEFI LESPEDE7A so COMMON BERMUDAIRASS 10 T IESC�UIE ET 10 A SEEDING NOTES W �a �1 1. WHEREA MEAT APPEMANx:E S DESIRED, OMIT SERKEA v� 2. USE COMMON BLRIDAGRASS ONLY ON MATED, STIES WHORE IT CANNOT BE- COME A PST. BERMIDAOR/SS MAY BE REPLACED MEIN 5 4/am CENIIPEDEMM& T 1 SEEDING DATES n AUK - JILr 15 ^ vN °OVA IOIL AMENDMENTS w DO APPLY LAE AND FERTILIZER ACCORDING TO SOIL TESTS, OR APPLY 3,000 c/aam C E I V E GROUND AGRICULTURE LIMESTONE AND 500 a/«n 10-10-10 FamUZM E n NOV 2 41998 MULCH .,rl D E M APPLY 4.= ocr* GRAN SIRAROR WUNADR COVER OF M01HER SUITABLE MRaCHL N1CL10R BY TAi`JONG w �•I G(4<XZy WITH ASPHALT. ROVING, OR NETTING OR BY CR M WITH BLADES St:T NEARLY STRAIGHT CAN BE �� T4 w L) ANCHORBLGHORING USED TOOLWIN BL Q) O .-I MAINTENANCE )"") 1 � t REFERIL¢E THE FOLLOWING APRL WITH 50 E/am NITROGEN. REPEAT AS GROYAH REOURES. MAY BE MOWED 0 I I a ALLY ONCE A YEAR. MARE A NEAT APPEARANCE B DESREO, OMIT SERIWA AND MOW 18 OFTEN AS NEEDED. Z H••X z Co Z W t`� C w D IN FALL GRASSING DETAIL a a° I o I o W WPELETSEEDING MIXTURE .4" � W � a RATE a 1'16/acre) RYW (groin) 120i �� a _ SEEDING NOTES E-1 LS) at ro O MOUNTAINS - AUG. 15-DEC. 15 COASTAL PLAN and PIEDMONT - AUG. 15-DEC 30 SOIL AMENDMENTS FOLLOW SOL TESTS OR APPLY 2.000 LB/ACRE GROUND AGRICULTURAL LIMESTONE AD 1.000 LB/ACRE 10-10-10 FERTILIZER. KE MULCH APPLY 4.000 LB/ACRE STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT, NETTED, OR A MULCH ANCHORING TOOL A DISK WITH BLAMES SET NEARLY STRAIGHT GAIN BE USED AS A MULCH ANCHORING TOOL MAINTENANCE a PAIni7opm rm In MarmH�. n L n y ro .o<wlalr• Tiampor«y with 50 lb/we arKaaua (MouMaka) la •Oia in lab F(•Wilalry MNor mv March. NOTES: 1. AS SYNTHETIC FABRIC, USE A PERVIOUS SHEET OF NYLON, 5. TO PROVIDE NEEDED STABILITY TO THE INSTALLATION, FRAME WITH POLYESTER, OR ETHYLENE YARN -EXTRA STRENGTH 2x4-INCH WOOD STRIPS AROUND THE CREST OF THE OVERFLOW (50 LB/ 11NCH MIN.) -THAT CONTAINS ULTRAVIOLET RAY AREA AT A MAXIMUM OF 1.5 FT ABOVE THE DROP INLET CREST. „ INHIBITORS AND STABILIZERS. FABRIC SHOULD BE SUFFICIENTLY POROUS TO PROVIDE ADEQUATE DRAINAGE OF THE TEMPORARY 6. PLACE THE BOTTOM 12 INCHES OF THE FABRIC IN A TRENCH AND 3/8" AIRCRAFT „ SEDIMENT POOL. BURLAP MAY BE USED FOR SHORT-TERM BACKFILL THE TRENCH NTH AT LEAST 4 INCHES OF CRUSHED STONE CABLE, CONT. APPLICATIONS. IT MUST BE REPLACED EVERY 80 DAYS. OR 12 INCHES OF COMPACTED SOIL _ 2. CUT FABRIC FROM A CONTINUOUS ROLL TO ELIMINATE JOINTS. 7. FASTEN FABRIC SECURELY TO THE STAKES AND FRAME. JOINTS MUST BE ASPHALT 3. FOR STAKES, USE 2x4-INCH WOOD(PREFERRED)OR EQUIVALENT OVERLAPPED TO THE NEXT STAKE. • • FILTER METAL WITH A MINIMUM LENGTH OF 3 FT. S. THE TOP OF THE FRAME AND FABRIC MUST BE WELL BELOW THE GROUND 4 BAR L6" 4 -0` 4. SPACE STAKES EVENLY AROUND THE PERIMETER OF THE INLET ELEVATION DOWNSLOPE FROM THE DROP INLET TO KEEP RUNOFF FROM � „ BOTTOM 29.5 A MAXIM GROUND, APPROXIMATELYFTART.AND IN SECURELY DR VE THEM I� DIKE BYPASSING THE INLET. I E MAY E EH STRUCTURE. BUILD A TEMPORARY -0 O.C. x 12 SECTION A - AOF EXTRUDED CURB}:.; DETENTION POND OUTLET STRUCTURE TEMPORARY FABRIC DROP INLET _EROSION CONTROL NTS NOV 9 5 io, NITS NTS r- 12"RbP i (v1�1rv1 /1�/1Q1y��/)CU�,i,/ _: 'l• cC S E A L - 17374 - DATE 11-20-98 DESIGN PGT DRAWN MLV C I SHEET 1 OF 1 98065