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HomeMy WebLinkAboutSW8020622_Historical File_20090902A-""4i1*VA* NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary September 2; 2009 Mr. Cary Newman, Senior VP an GM Coty US LLC (a wholly -owned subsidiary of Coty Inc.) 1830 Carver Drive Rocky Point, NC 28457 Subject: Stormwater management Permit No. SW8 020622 Coty US LLC High Density Stormwater Project Pender County Dear Mr. Newman: The Wilmington Regional Office received a complete Stormwater Permit Transfer of Ownership Application for Coty US LLC (formerly the Del Laboratories Addition) on September 2, 2009. As required by the Stormwater Regulations set forth in Title 15A NCAC 2H.1000 effective September 1, 1995, this site was inspected on March 20, 2009 and found to be in compliance with permit conditions. Therefore, permit SW8 020622 was transferred on September 2, 2009 and shall be effective until October 4, 2012. 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. The plans previously approved on. October 4, 2002 remain in full force and effect. 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 either Angela Hammers or me at (910) 796-7215. Sincerely, Georgette Scott 4 ;` Stormwater Supervisor Division of Water Quality GDS/akh: S:IWQSISTORMWATERIPERMIT1020622.sep09 cc: Anthony Smith, Coty US LLC Pender County Planning Department WiRO; Central Files Wilmington Regional office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 OIIe Phone: 910-796-72151 FAX 910-350-20041 Customer Service:1-877-623-6748 NorthCarolliina Internet www,ncwaterqualigr.org �atura"� An Equal Opportunity 1 Affirmative Action Employer State Stormwater Management Systems Permit No. SW8 020622 STATE OF NORTH CAROLINA DEPARTMENT vl- ENVIRONMENT AND NATURAL RESu1URC.eS DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Cary Newman & Coty US LLC (a wholly -owned subsidiary of Coty Inc.) Coty US LLC 1830 Carver Drive, Rocky Point, Pender County FOR THE operation and maintenance of two (2) wet detention ponds 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 October 4, 2012, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described on page 3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from 374,616 ft2 and 413,294 ft2 of impervious area, respectively. Each pond must be operated with a 30' vegetated filter. 3. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 4. The runoff from all built -upon area within the permitted drainage area of each pond associated with this project must be directed into the permitted stormwater control system. A permit modification must be submitted and approved prior to allowing additional runoff from outside of the approved drainage area to drain into the stormwater control system. 2 State Stormwater Management Systems , Permit No. SW8 020622 DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Project Name: Coty US LLC Permit Number: SW8 020622 Location: Pender County Applicant: Mr. Cary Newman, Vice President Mailing Address: Coty US LLC 1830 Carver Drive Rocky Point, NC 28457 Application Date: October 4, 2002 Receiving Stream Northeast Cape Fear River Index #: 18-74-(47.5) Classification of Water Body: "B Sw" Pond Number: 1 2 Total Drainage Area, acres: 12.6 11.2 Onsite: 12.6 11.2 Offsite: 0 0 Pond Depth, feet: 4 4 Total Impervious Surfaces, ft2: 374,616 413,294 Permanent Pool Elevation, FMSL: 21 22 Required Surface Area, ft2: 24,028@21 26,749 @22 Provided Surface Area, ft2: 29,130@21 26,750 @22 Required Storage Volume, ft3: 30,383 33,030 Provided Storage Volume, ft3: 47,530 62,435 Temporary Storage Elevation, FMSL: 22.5 24 Controlling Orifice: 2.5" cp pipe 2.5" cp pipe II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in it's entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. Icy W State Stormwater Management Systems Permit No. SW8 020622 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. 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, flow spreader, 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 stormwater treatment system. 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. A modification may be required for those deviations. 8. 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. 9. 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, or sale of the project area. The project area is defined as all proper 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. 4 State Stormwater Management Systems Permit No. SW8 020622 10. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. If the proposed BUA exceeds the amount permitted under this permit, a modification to the permit must be submitted and approved prior to construction. 11. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. 12. Prior to the sale or lease of any portion of the property, the permittee shall notify DWQ and provide the name, mailing address and phone number of the purchaser or leasee. 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 or lease of any portion of the property. 13. The permittee must maintain compliance with the proposed built -upon area and ensure that the runoff from all the built -upon is directed into the permitted system. 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. Responsibility for compliance with all permit conditions remains with the Permittee until such time as the Division approves the formal permit request. 2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The permittee grants DENR Staff permission to enter the property during normal business hours 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. 5 State Stormwater Management Systems Permit No. SW8 020622 7. 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. 8. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 9. The permittee shall notify the Division any name, ownership or mailing address changes within 30 days. •Permit issued this the 2"d day of September 2009. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Division of Water Quality By Authority of the Environmental Management Commission 0 w �o�QF ArF4oG 5. 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 WATER QUALITY SECTION STATE STORMWATER PERMIT NAMEIOWNERSHIP C I�RMf)pjtjil I. CURRENT PERMIT INFORMATION: 1. Stormwater Management Permit Number: SW8020622 By' 2. Permit Holder's Name: Del Laboratories, Inc. JAN 2. 0 2009 3. Signing Official's Name: Cary Newman Title: Senior VP of Global Operations (person legally reepo-lble for per 4. Mailing Address: 1830 Carver Drive City: Rocky Point State: NC Zip: 28457 Phone: (910) 602-4184 Fax: (910) 602-3989 li. NEW OWNER I PROJECT / ADDRESS INFORMATION: 1. This request is for: (please check all that apply) X a. Change in ownership of the property/company (Please complete Items #2, #3, and #4 below) X b. Name change of project (Please complete Item #5 below) c. Mailing address change. (Please complete Item #4 below) d. Other (please explain): 2. New owner's name to be put on permit: Coty US LLC (a wholly -owned subsidiary of Coty Inc. 3. New owner's signing official's name and title: Cary Newman Title: Senior VP and GM 4. Mailing Address: 1830 Carver Drive City: Rocky Point State: NC Zip: 28457 Phone: (910) 602-4200 x 4230 Fax: (910) 602-3989 5. New Project Name to be placed on permit: Coty US LLC (a wholly -owned subsidiary of Coty Inc.) Ownership/Name Change-080808 Page 1 of 3 PERMIT NAME/OWNERSHIP CHANGE FORM THIS APPLICATION PACKAGE WILL NOT BE ACCEPTED BY THE DIVISION OF WATERQUALITY UNLESS ALL OF THE APPLICABLE ITEMS LISTED BELOW ARE INCLUDEDWITH THE SUBMITTAL. REQUIRED ITEMS: 1. This completed form. 2. Legal documentation of the transfer of ownership. 3. A copy of the recorded deed restrictions, if required by the permit. 4. The designer's certification, if required by the permit. 5. A signed Operation and Maintenance plan, if a system that requires maintenance will change ownership. 6. Maintenance records. CERTIFICATION MUST BE COMPLETED AND SIGNED BY BOTH THE CURRENT PERMITHOLDER AND THE NEW APPLICANT IN THE CASE OF A CHANGE OF OWNERSHIP. FOR NAME CHANGES, COMPLETE AND SIGN ONLY THE CURRENT PERMITTEE'S CERTIFICATION. Current Permittee's Certification: i, Cary Newman , attest that this application for a name/ownership change has been reviewed and is accurate and complete to the best of my knowledge. I understand that if all required parts o this application are not completed and that if all required supporting information and attachment not included)his application package will be returned as incomplete. Signature: New Applicant's Certification: (Must be completed for all transfers of ownership) i, Cary Newman , attest that this application for an ownership change has been reviewed and is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are not completed and that if all required supporting information and attachments are not included, this application package will be returned as incomplete. Signature: 4Date: Mail the entire pac ge to: NCDENR Division of Water Quality Surface Water Protection Section — Stormwater at the Appropriate Contact Address (see the following page) Ownership/Name Change-080808 Page 2 of 3 State Stormwater Management Systems Permit No. SW8 020622 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Cary Newman & Coty US LLC (a wholly -owned subsidiary of Coty Inc.) Coty US LLC 1830 Carver Drive, Rocky Point, Pender County FOR THE operation and maintenance of two (2) wet detention ponds 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 October 4, 2012, and shall be subject to the following specified conditions and limitations: L 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 374,6161 ftz and 413,294 ftz of Impervious area, respectively. Each pond must be operated with a 30' vegetated filter. 3. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 4. The runoff from all built -upon area within the permitted drainage area of each pond associated with this project must be directed into the permitted stormwater control system. A permit modification must be submitted and approved prior to allowing additional runoff from outside of the approved drainage area to drain into the stormwater control system. State Stormwater Management Systems Permit No. SW8 020622 DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Project Name: Coty US LLC Permit Number: SW8 020622 Location: Pender County Applicant: Mr. Cary Newman, Vice President Mailing Address: Coty US LLC 1830 Carver Drive Rocky Point, NC 28457 Application Date: October 4, 2002 Receiving Stream Northeast Cape Fear River Index #: 18-74-(47.5) Classification of Water Body: "B Sw" Pond Number: 1 2 Total Drainage Area, acres: 12.6 11.2 Onsite: 12.6 11.2 Offsite: 0 0 Pond Depth, feet: 4 4 Total Impervious Surfaces, ft2: 374,616 413,294 Permanent Pool Elevation, FMSL: 21 22 Required Surface Area, ft2: 24,028@21 26,749 @22 Provided Surface Area, ft2: 29,130@21 26,750 @22 Required Storage Volume, fP: 30,383 33,030 Provided Storage Volume, ft3: 47,530 62,435 Temporary Storage Elevation, FMSL: 22.5 24 Controlling Orifice: 2.5" cp pipe 2.5" cp pipe II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in it's entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. M State Stormwater Management Systems Permit No. SW8 020622 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. Mowinq and re -vegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris remove! and unclogging of outlet structure, orifice device, flow spreader, catch basins and piping. g. Access to the cutlet 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 stormwater treatment system. 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 olars 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. A modification may be required for those deviations. 8. 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. S. 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, or sale of the project area. The project 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. 9 State Stormwater Management Systems Permit No. SW8 020622 10. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. If the proposed BUA exceeds the amount permitted under this permit, a modification to the permit must be submitted and approved prior to construction. 11. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. 12. Prior to the sale or lease of any portion of the property, the permittee shall notify DWQ and provide the name, mailing address and phone number of the purchaser or leasee. 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 or lease of any portion of the property. 13. The permittee must maintain compliance with the proposed built -upon area and ensure that the runoff from all the built -upon is directed into the permitted system. 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 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. Responsibility for compliance with all permit conditions remains with the Permittee until such time as the Division approves the formal permit request. 2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The permittee grants DENR Staff permission to enter the property during normal business hours 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. State Stormwater Management Systems Permit No. SW8 020622 7. 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. 8. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. S. The permittee shall notify the Division any name, ownership or mailing address changes within 30 days. Permit issued this the 2"d day of September 2008. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION for Coleen H. Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission i State Stormwater Management Systems Permit No. SW8 020622 DEL Laboratories Addition Stormwater Permit No. SW8 020622 Pender County Designer's Certification I, Michelle S . Clements , as a duly registered Professional- Engineer in the State of North Carolina, having been. authorized to observe (periodically&lam) the construction of the project, DEL Laboratories Inc. (Proj ect) for DEL Laboratories Inc (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. Notcd deviations from approved plans and specification: Signaturea'C.�' Registration Number 2 g y Z Z Date 3 f () 5 �� ti CA i •MEAL 029422 RE E MAR 0 4 2009 State Stormwater Management Systems Permit No. SW8 020622 Certification Requirements: 1' 1. The drainage area to the system contains approximately the permitted acreage. The drainage area to the system contains no more than the permitted amount of built -upon area. Inn 3. All'the built -upon area -associated with the project is' graded such that the runoff drains to the system. MX- 4. The outlet/bypass structure elevations are per the approved plan. _5. The outlet structure is located per the approved plans. 1Y1,5L 6. Trash rack is provided on the outlet/bypass structure. Yyl�7. All slopes are grassed with permanent vegetation. m5e- 8. Vegetated slopes are no steeper than 3:1. /Y)N:, 9. The inlets are located per the approved plans and do not cause short-circuiting of the system. MY- 10. The permitted amounts of surface area and/or volume have been provided. m6c 11. Required drawdown devices are correctly sized per the approved plans. 1y)b(- 12. All required design depths are provided. 1MMSL 13. All required parts of the system are provided, such as a vegetated shelf, and a forebay. MY, 14. The overall dimensions of the system, as shown on the approved plans, are provided. cc: NCDENR DWQ Regional Office Pender County Building Inspections THE EAST LETTER OF TRANSMITTAL GROUP - Engineering - Architecture - Surveying - Technology Sheet 9 324 Evans Street, Greenville, NC 27858 Office:252-758-3746 Fax:252-830-3954 To: NCDENR Date: 3/3/09 Project No. 20020019 Wilmington Regional Office Attention: Angela Hammers 127 Cardinal Drive Extension RE: Designer's Certification Wilmington, NC 28405 Del Laboratories, Inc. , SW8 020622 We are sending you the foil owin Specs e Copy of Letter Payment Application Change Order Plans R E-mailed Copy Copies Date No. Item Description 1 3-3-09 Designer's Certification These items are transmitted as checked below: For Approval Approved For Your Use Approved as Noted X As Requested Revise & Resubmit For Review and Comment Returned No Action Prints returned after Loan to us Remarks: Attached is the Designer's Certification for the Del Laboratories Addition, 7B1. -"V D 0 4 2009Co ies: Architect: X Owner Mr. Cary Newman X Engineer: TEG Other: Contractor: Other: Signed: Michelle S. Clements, PE Q:1General Formslftject RelaatecKetter of Transmittal.doc 08/10/04 BG FILED '08 JUL 15 AN If: 15 jij---CE M. SWICEGOOD REOISTER OF DEEDS PENDER COUNTY, NC 27013 IX3493PG 165 �RTM�CATE QZ ASSUMED NAM FOR CORPORATION The undersigned corporation, proposing to engage in bu#ness in - Pander -county, North Carolina, under an assumed name other than its corporate name, hereby certifies that: 1. The assumed name under which the business is to be conducted is: Del Lalbaratodes 2. The names and address of the owner(s) of the -business is (are): Cory Inc. Two Park Ave. New York, WY 10016 In witness whereof, this certificate is signed in the name of the corporation by its Assistant Secretary (Title) this loth day of July 20 09 Cotyusmc- (Name of Corporation) By: (Signature and Tide) Ertc ombmn j 'q � -e , 3's Mtegn' Recorded and M Joyce I.I. swica Itegisicr of Do pander Countyv,N Revised M012006 P-9 IK3493PG 166 Notary Acknowledgment for the "Certificate of Assumed Name for Corporation" State Of New York County of New York 1, Ofetia G. Custodie a Notary -Public for State Of New York certify that NewYork Eric Bteitn m County, personally appeared before me this day and acknowledged that be/shcJs Assiatent Secretary (Title of Official) Of Coty US LLC Corporation, and that he/she as Assistant Secretary (Name of Corporation) (Title of Official) being authorized to do so, executed the foregoing instrument on behalf of the said corporation. Witness my hand and official seal, this the Loth day of July 2008 Public io = i �w ` AN) ' My Commission 13tpires: July 26. 2008 Month/Day/Year :; .+•�:: OFELIA Lcusm0om HOM4Publb-Stale of New Yak FI*CMnMW8bnEXPIMITWV26%& W OICW113223 OWMed In ftftedw County Codkote Red k1 w Ya Revised 9/20/2006 Eco Express Pond Maintenance Inspection Form Facility Name: Del Labs Date: January 3, 2008 Inspector: Ryan Freeman InsDection Numbering System: I - Functioning properly 1 - Monitoring 2 - Routine maintenance required Immediate repair necessary - Not Applicable 1. Pond Banks - ,V Vegetative Cover 0 1 2 3 N/A Woody Growth 0 1 2 3 N/A Erosion 1 2 3 N/A Rills 0 1 2 3 N/A Sloughing 0 1 2 3 N/A Escarpment 0 1 2 3 N/A Animal Burrows 0 1 2 3 N/A Soil Stabilization 0 1 2 3 N/A Seepage !)� 1 2 3 N/A 2. Outfall Structure Erosion/Undercutting ► 1 2 3 N/A Excessive Sediment Deposits f 1 2 3 N/A Rip Rap Displacement ! 1 2 3 N/A Woody Growth 1 2 3 N/A Weir Trash Rack 0 1 2 3 N/A Leaking Through Structure 1 2 3 N/A Joint Failure 1 2 3 N/A Drawdown Orifice 1 2 3 N/A 3. Intake Structure(s) Erosion/Undercutting 1 2 3 N/A Excessive Sediment Deposits 1 2 3 N/A Rip Rap Displacement R:i 1 2 3 N/A Woody Growth 1 2 3 N/A Joint Failure E 1 2 3 N/A 4. Emerp-encv Snillwav Erosion 1 2 3 N/A Rip Rap Displacement 1 jr 2 3 N/A Woody Growth 1 2 3 N/A 5. Forebav Separator Erosion 1 2 3 N/A Ri Ra Dis lacement 1 2 3 N/A Vegetative Cover T 1 2 3 N/A Woody Growth 0 1 2 3 N/A 6. Permanent Pool Excessive Sedimentation 1 2 3 N/A Algae 1 2 3 N/A Invasive Weeds 1 2 3 N/A Floating Debris 1 2 3 N/A 7. Forebav Excessive Sedimentation 1 2 3 N/A Algae 1 2 3 N/A Invasive Weeds 1 2 3 N/A Floating Debris 1 2 3 N/A 8. Miscellaneous Mechanical Components 0 1 2 3 Fence Condition 0 1 2 3 Locks 0 1 2 3 Warning Signs 0 1 2 3 Vandalism 1 2 3 N/A Additional Comments: Eco Express Pond Maintenance Inspection Form Facility Name: Del Labs Date: December 12, 2008 Inspector: Ryan Freeman Inspection Numbering System: - Functioning properly 1 - Monitoring 2 - Routine maintenance required Immediate repair necessary - Not Applicable 1. Pond Banks Vegetative Cover 0 1 2 3 N/A Woody Growth 0 1 2 1 N/A Woody growth needs to be removed. Erosion 1 2 3 N/A Rills 1 2 3 N/A Sloughing 1 2 3 N/A Escarpment 1 2 3 N/A Animal Burrows (1 1 2 3 N/A Soil Stabilization +: 1 2 3 N/A Seepage 1 2 3 N/A 2. Outfall Structure Erosion/Undercutting 1 2 3 N/A Excessive Sediment Deposits 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Woody Growth 1 2 3 N/A Weir Trash Rack 0 1 2 3 N/A Leaking Through Structure 0 1 2 3 N/A Joint Failure 0 1 2 3 N/A Drawdown Orifice 0 1 2 3 N/A 3. Intake Structure(s) Erosion/Undercutting 0 1 2 1 N/A Washout on side of intake. Excessive Sediment Deposits 1 2 3 N/A Rip Rap Displacement t 1 2 3 N/A Woody Growth 1 2 3 N/A Joint Failure 1 2 3 N/A 4. Emereencv Svillwav Erosion 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Woody Growth 1 2 3 N/A 5. Forebav SeAarator Erosion 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Vegetative Cover U 1 2 3 N/A Woody Growth t, 1 2 3 N/A 6. Permanent Pool Excessive Sedimentation 0 1 2 3 N/A Algae 1 2 3 N/A Chemically Treated. Invasive Weeds 1 2 3 N/A Floating Debris i 1 2 3 N/A 7. Forebav Excessive Sedimentation 1 2 3 N/A Algae 1 2 3 N/A Invasive Weeds 0 1 2 3 N/A Floating Debris 0 1 2 3 N/A 8. Miscellaneous Mechanical Components 0 1 2 3 Fence Condition 0 1 2 3 Locks 0 1 2 3 WarningSigns 0 1 2 3 Vandalism 1 2 3 N/A Additional Comments: Tree can be removed for additional charge of $250.00. Eco Express Pond Maintenance Inspection Form Facility Name: Del Labs Date: November 14, 2008 Inspector: Ryan Freeman Inspection Numbering System: - Functioning properly I - Monitoring 2 - Routine maintenance required Immediate repair necessary - Not Applicable 1. Pond Banks Vegetative Cover 0 1 2 3 N/A Cover is thin. Woody Growth 0 1 2 1 N/A Fallen tree needs to be removed. Erosion 0 1 2 3 N/A Rills 0 1 2 3 N/A Sloughing 1 2 3 N/A Escarpment 0 1 2 3 N/A Animal Burrows I 0 1 2 3 N/A Soil Stabilization 1 2 3 N/A Seepage 1 2 3 N/A 2. Outfall Structure Erosion/Undercutting 1 2 3 N/A Excessive Sediment Deposits 1. 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Woody Growth 1 2 3 N/A Weir Trash Rack 1 2 3 N/A Leaking Through Structure 1 2 3 N/A Joint Failure 1 2 3 N/A Drawdown Orifice 1 2 3 N/A 3. Intake Structure(s) Erosion/Undercutting 0 1 2 3 N/A Washout on side of intake. Excessive Sediment Deposits 1 2 3 N/A Rip Rap Displacement 1 1 2 3 N/A Woody Growth 1 2 3 N/A Joint Failure I 1 2 3 N/A 4. Emergencv Spillwav Erosion 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Woody Growth 1 2 3 N/A 5. Forebav Separator Erosion 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Vegetative Cover 1 2 3 N/A Woody Growth 1 2 3 N/A 6. Permanent Pool Excessive Sedimentation 1 2 3 N/A Algae 1 2 3 N/A Invasive Weeds 1 2 3 N/A Floating Debris 1 2 3 N/A 7. Forebav Excessive Sedimentation 1 1 2 3 N/A Algae 1.9 1 2 3 N/A Invasive Weeds �; �, 1 2 3 N/A Floating Debris I S 1 2 3 N/A 8. Miscellaneous Mechanical Components 0 1 2 3 Fence Condition 0 1 2 3 Locks 0 1 2 3 Warning Signs 0 1 2 3 Vandalism M 1 2 3 N/A Additional Comments: Tree can be removed for additional charee of $250.00. Eco Express Pond Maintenance Inspection Form Facility Name: Del Labs Date: October 31, 2008 Inspector: Ryan Freeman Inspection Numbering System: 1- Functioning properly 1 - Monitoring 2 - Routine maintenance required Immediate repair necessary -Not Applicable 1. Pond Banks Vegetative Cover 0 1 2 3 N/A Cover is thin. Woody Growth 0 1 2 3 N/A Erosion 0 1 2 3 N/A Rills 0 1 2 3 N/A Sloughing 0 1 2 3 N/A Escazpment 1 2 3 N/A Animal Burrows 0 1 2 3 N/A Soil Stabilization 0 1 2 3 N/A Seepage q- 1 2 3 N/A 2. Outfall Structure Erosion/Undercutting 1 2 3 N/A Excessive Sediment Deposits 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Woody Growth 1 2 3 N/A Weir Trash Rack 1 2 3 N/A Leaking Through Structure 1 2 3 N/A Joint Failure 1 2 3 N/A Drawdown Orifice 1 2 3 N/A 3. Intake Structure(s) Erosion/Undercutting 0 1 2 3 N/A Washout forming at spillway in pond #2. Excessive Sediment Deposits 1 2 3 N/A _ Rip Rap Displacement 1 2 3 N/A Woody Growth 1 2 3 N/A Joint Failure + 1 2 3 N/A 4. Emergencv Snillwav Erosion 1 2 3 N/A Rip Rap Displacement 1 1 2 3 N/A Woody Growth 1 2 3 N/A 5. Forebav Separator Erosion 1 2 3 N/A Rip Displacement 1 2 3 N/A Vegetative Cover _i 1 2 3 N/A Woody Growth 10 1 2 3 N/A 6. Permanent Pool Excessive Sedimentation 1 2 3 N/A Algae 1 2 3 N/A Invasive Weeds 1 2 3 N/A Floating Debris 1 2 3 N/A 7. Forebav Excessive Sedimentation 1 2 3 N/A Algae 1 2 3 N/A Invasive Weeds 0 1 2 3 N/A Floating Debris 0 1 2 3 N/A 8. Miscellaneous Mechanical Components 0 1 2 3 Fence Condition 0 1 2 3 Locks 0 1 2 3 :a. WarningSigns 0 1 2 3 Vandalism 0 1 2 3 N/A Additional Comments: Eco Express Pond Maintenance Inspection Form Facility Name: Del Labs Date: September 24, 2008 Inspector: Ryan Freeman Inspection Numbering_ System: I - Functioning properly 1 - Monitoring 2 - Routine maintenance required Immediate repair necessary - Not Applicable 1. Pond Banks Vc etative Cover f 1 2 3 N/A Woody Growth 0 1 2 1 N/A Tree down in pond. Erosion 0 1 2 3 N/A Rills d 1 2 3 N/A Sloughing 0 1 2 3 N/A Escarpment 0 1 2 3 N/A Animal Burrows t ► 1 2 3 N/A Soil Stabilization +► 1 2 3 N/A Seepage 1 2 3 N/A 2. Outfall Structure Erosion/Undercutting 0 1 2 3 N/A Excessive Sediment Deposits i 1 2 3 N/A Rip Rap Displacement !'? 1 2 3 N/A Woody Growth 1 2 3 N/A Weir Trash Rack 1 2 3 N/A Leaking Through Structure 1 2 3 N/A Joint Failure 1 2 3 N/A Drawdown Orifice 1 2 3 N/A 3. Intake Structure(s) Erosion/Undercutting 0 1 2 3 N/A Washout forming at spillway in pond #2. Excessive Sediment Deposits 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Woody Growth Ii 1 2 3 N/A Joint Failure 1 2 3 N/A 4. Emergency Spillway Erosion 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Woody Growth 1 2 3 N/A 5. Forebav Separator Erosion 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Vegetative Cover 1 2 3 N/A Woody Growth 1 2 3 N/A 6. Permanent Pool Excessive Sedimentation 1 2 3 N/A Algae 1 2 3 N/A Invasive Weeds 1 2 3 N/A Floating Debris 1 2 3 N/A 7. Forebav Excessive Sedimentation 1 2 3 N/A Algae 1 2 3 N/A Invasive Weeds 1 2 3 N/A Floating Debris 1 2 3 N/A 8. Miscellaneous Mechanical Components 0 1 2 3 Fence Condition 0 1 2 3 Locks 0 1 2 3 WarningSigns 0 1 2 3 Vandalism 1 1 2 3 N/A Additional Comments: Eco Express Pond Maintenance Inspection Form Facility Name: Del Labs Date: August 25, 2008 Inspector: Ryan Freeman Inspection Numbering _System: 1- Functioning properly 1 - Monitoring 2 - Routine maintenance required Immediate repair necessary - Not Applicable 1. Pond Banks Vegetative Cover Q, 1 2 3 N/A Woody Growth 1 2 3 N/A Erosions 1 2 3 N/A Rills 0 1 2 3 N/A Sloughing y 1 2 3 N/A Escarpment 1 2 3 N/A R Animal Burrows 1 2 3 N/A Soil Stabilization 1 2 3 N/A Seepage 1 2 3 N/A 2. Outfall Structure Erosion/Undercutting 1 2 3 N/A Excessivc Sediment Deposits 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Woody Growth 1 2 3 N/A Weir Trash Rack 1 2 3 N/A Leaking Through Structure 1 2 3 N/A Joint Failure 1 2 3 N/A Drawdown Orifice 1 2 3 N/A 3. Intake Structure(s) Erosion/Undercutting 0 1 2 3 N/A Washout forming at spillway in pond #2. Excessive Sediment Deposits 1 2 3 N/A Rip Rap Displacement 1 2 3 N/A Woody Growth 1 2 3 N/A Joint Failure 1 2 3 N/A 4. Emergencv Spillwav Erosion 1 2 3 N/A Rip Rap Displacement �t 1 2 3 N/A Woody Growth 1 2 3 N/A 5. Forebav Separator Erosion a: 1 2 3 N/A Rip Rap Displacement 0 1 2 3 N/A Vegetative Cover 1 2 3 N/A Woody Growth 1 2 3 N/A 6. Permanent Pool Excessive Sedimentation 0 1 2 3 N/A Algae 1 2 3 N/A Invasive Weeds 1 2 3 N/A Was chemically treated. Floating Debris 1 2 3 N/A 7. Forebav Excessive Sedimentation 0 1 2 3 N/A Algae 0 1 2 3 N/A Invasive Weeds 1 2 3 N/A Was chemically treated. Floating Debris t 1 2 3 N/A 8. AUscellaneous Mechanical Components 0 1 2 3 Fence Condition 0 1 2 3 Locks 0 1 2 3 WarningSigns 0 1 2 3 Vandalism 0 1 2 3 N/A Additional Comments: v-eI OCT 0820 02 NAO THE � BYE -- 1ryu LETTER OF TRANSMITTAL Engineering - Architecture - Surveying - Technology P.O. Box 7305 / 324 S. Evans Street, Greenville, NC 27834 Phone 252-758-3746 Fax 252-830-3954 To: NCDENR-Division of Water Quality Date: 10/7/02 1 Proj. No.: 20020019 127 Cardinal Dr. Ext. Attention: Linda Lewis Wilmington, NC 28405-3845 RE: Del Labs D#: We are sending you the folio in : Shop Drawings E Prints Samples Copy of Letter Specs Payment Application Change Order Plans Other Copies Date No. Description 1 Wet Detention Pond Calculations These items are transmitted as checked below: X For Approval Reviewed For Your Use Reviewed as Noted As Requested Revise & Resubmit For Review and Comment Returned No Action Prints returned after Loan to us Remarks: If you have any comments, contact Michelle Clements Co ies: Architect: Engineer: Contractor: Owner Other: Other: Signed: Cerise Jones T-NCDENR-10-7-02 Linda Lewis Wet Detention Pond Worksheet Project Del Laboratories, Inc. Pond # 2 30-Sep-02 1 Determine SA/DA Ratio Enter % impervious From applicable SA/DA table Next lowest % Impervious value Next highest % Impervious value SA/DA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf 84.7 from 85% removal table Percentage Ratio 80 5.2 90 5.8 5.482 11.2 0.613984 26745.14 2 Determine Runoff from 1" Storm Rv, runoff coeff = storm runoff, inches / rainfall, inches Rv = 0.05+0.009(%impervious) Rv = 0.8123 Volume to be controlled I" Rv DA/12 = 0.758 ac-ft 33024.87 cf 3 Determine dimensions Desired length/width ratio 3 Pond width = 94.41953 80 approximate Pond length = 283.2586 240 approximate Depth above permanent pool required, ft 1.234799 2 Depth above permanent pool required, in 14.81758 Actual Pond Provided at Permanent Pool 26750 by planimeter 4 Determine Release Rate - Assume 3 days Volume of Temporary Pool - 33100 cf 33,100.0011day 11 hr 11 min 3 days 124 hrs 160 min 160 sec Release Rate = 0.128 0,010o13081 ape 5 Outlet Pipe Size Required ,��p� E Q=Cd * A * (2gH)1/2 °a Q=.128cfs� Cd = .52 e o g=32.2 ° A = .032 ft sq = 4.61 in sq r=1.21 in d=2.42in(Use 2.5) Calculations By: Michelle Clements, EIT Reviewed By: D. Kermit Smith, PE Wet Detention Pond Worksheet Project Del Laboratories, Inc. Pond # 1 1-Oct-02 1 Determine SA/DA Ratio Enter % impervious From applicable SA/DA table Next lowest % Impervious value Next highest % Impervious value SA/DA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf 68 from 85% removal table Percentage Ratio 60 4.5 70 5.2 5.06 12.6 0.63756 27772.11 2 Determine Runoff from 1" Storm Rv, runoff coeff = storm runoff, inches / rainfall, inches Rv = 0.05+0.009(%impervious) Rv = 0.662 Volume to be controlled 1" Rv DA/12 = 0.695 ac-ft 30278.56 cf 3 Determine dimensions Desired length/width ratio 3 Pond width = 96.21523 80 approximate Pond length = 288.6457 287 approximate Depth above permanent pool required, ft 1.09025 1.5 Depth above permanent pool required, in 13.083 Actual Pond Provided 28890 by planimeter 4 Determine Release Rate - Assume 3 days Volume of Temporary 30300 30,300 11 day 1 hr 11 min 3 days 124 hrs 160 min 160 sec Release Rate = 0.117 5 Outlet Pipe Size Required Q=Cd * A * (2gH)1/2 Q=.117cfs Cd=.52 g = 32.2 H=.69ft A=.033ftsq=4.86insq r = 1.24 in d = 2.48 in (Use 2.5") Calculations By: Michelle Clements, EIT Reviewed By: D. Kermit Smith, PE n W o? r - Or oEn Z Z W d LU O W v � s `- z(LV) U V) F- 0 a M. U U *ZOJ _x OZJ Id- UYQ o Lq o 00 O N N II N II N II w II o O Q Z I m I V) O Z = LLJ W J Q U U<O Q w 0 J Q Qa O X W z z�� CL U) O J J = Q Q LLJ �O m 1 O F\}} CV N tJi Z ii Z U Z W U �a< C-4 9. n Z O CL W w D H U D V) z O H a LLI J W w z O w Cn M m U a zaV) �w 0 w m O to U U � �ZOJ x OM J * UYQ rlq U O 04 N O of r N II N II II IL w II w_ O of of zl m w=�¢z H V) < (f) Q m UU O Hw0 i® co oC.D xZ U.) z n W a. r7 O IL w 0 J Q QX O CD Mw z=3w aim O J J e Q Q � O m W N JZ II zO=z p C.D - W U Lr) d J N a n z I o p z O J CL UJI w Iy D U I D w o Cr) V) F- LLI N J U O z O r z O z z _0 0 H U W Cn N H Z Permit No. (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original WO Stormwater Management Plan Review: . complete stormwater management plan submittal includes an application form, a wet detention basin ippiement for. each basin, design calculations, and plans and specifications showing all basin and outlet ructare details. PROJECT INFORMATION tojectName: Del LaboratoriesInc .ontactPerson: Jim Lawrence Phone Number: (gin ) tin,)_4,)oo nor projects with multiple basins, specify which basin this worksheet applies to: 1 ?levations 3 asin Bottom Elevation 17.0 ft. ?ermanent Pool Elevation 21.0 ft. Temporary Pool Elevation 22.5 ft. areas Permanent Pool Surface Area 28890sq• ft• Drainage Area Impervious Area volumes Permanent Pool Volume Temporary Pool Volume Forebay Volume Other parameters SAMA1 Diameter of Orifice Design Rainfall Design TSS Removal 2 12.6 ac. 8.6 ac. (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) 5 0 , o 0 0 cu. ft. (combined volume of main basin and forebay) 47380 cu. ft. (volume detained above the permanent pool) 20,000 cu. ft. (approximately 20% of total volume) 5.06 (surface area to drainage area ratio from DWQ table) 2.5 in. (2 to 5 day temporary pool draw -down required) i % (minimum 85% required) Form SWU-lot Rev 3.99 Page 1 of 4 i'ZIIILLL iVU. (to be provided by DWO_) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original )WO Stormwater Management Plan Review: L complete stormwater management plan submittal includes an application form, a wet detention basin upplement for each basin, design calculations, and plans and specifications showing all basin and outlet tructure details. PROJECT INFORMATION Project Name: Contact Person: Del Laboratories Jim Lawrence Phone Number: ( 910) 6 0 2— 4 2 0 0 For projects with multiple basins, specify which basin this worksheet applies. to: elevations Basin Bottom Elevation Permanent Pool Elevation Temporary Pool Elevation 18.0 ft. 99 n ft. 94 n ft. 2 (floor of the basin) (elevation of the orifice) (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 2 6', 7 5 0 sq. ft, (water surface area at the orifice elevation) Drainage Area 11.2 ac. (on -site and off -site drainage to the basin) Impervious Area 9 49 ac. (on -site and off -site drainage to the basin) volumes Permanent Pool Volume Temporary Pool Volume Forebay Volume Other parameters SAIDA1 Diameter of Orifice Design Rainfall Design TSS Removal 2 -, 7,7 0 5 cu. ft. (combined volume of main basin and forebay) 62, 4 3 5 cu. ft. (volume detained above the permanent pool) 999 9 4 cu. ft. (approximately 20% of total volume) 5.482 (surface area to drainage area ratio from DWO_ table) 2.5 in. (2 to 5 day temporary pool draw -down required) 1 in. 85 % (minimum 85% required) Form SWU-102 Rev 3.99 Page 1 of 4 Wet Detention Pond Worksheet Project Del Laboratories, Inc. Pond # 2 30-Sep-02 Determine SA/DA Ratio Enter % impervious From applicable SA/DA table Next lowest % Impervious value Next highest % Impervious value SA/DA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf 84.7 from 85% removal table Percentage Ratio 80 5.2 90 5.8 5.482 11.2 0.613984 26745.14 2 Determine Runoff from 1" Storm Rv, runoff coeff = storm runoff, inches / rainfall, inches Rv = 0.05+0.009(%impervious) Rv = 0.8123 Volume to be controlled 1" Rv DA/12 = 0.758 ac-ft 33024.87 cf 3 Determine dimensions Desired length/width ratio 3 Pond width = 94.41953 80 approximate Pond length = 283.2586 240 approximate Depth above permanent pool required, ft 1.234799 2 Depth above permanent pool required, in 14.81758 Actual Pond Provided at Permanent Pool 26750 by planimeter 4 Determine Release Rate - Assume 3 days Volume of Temporary Pool - 33100 cf 33,100.00 1 day 11 hr 11 min 3 days 124 hrs 160 min 160 sec Release Rate = 0.128 �flQo�nJfl90Db 'g*Iw CAI 5 Outlet Pipe Size Required Q=Cd * A * (2gH)1/2 4�E Q=.128cfs o " Cd=.52 3 H = .94 A = .032 ft sq = 4.61 in sq r = 1.21 in d = 2.42 in (Use 2.5") Calculations By: Michelle Clements, EIT Reviewed By: D. Kermit Smith, PE Wet Detention Pond Worksheet Project Del Laboratories, Inc. Pond # 1 1-Oct-02 Determine SA/DA Ratio Enter % impervious From applicable SA/DA table Next lowest % Impervious value Next highest % Impervious value SA/DA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf 68 from 85% removal table Percentage Ratio 60 4.5 70 5.2 5.06 12.6 0.63756 27772.11 2 Determine Runoff from 1" Storm Rv, runoff coeff = storm runoff, inches / rainfall, inches Rv = 0.05+0.009(%impervious) Rv = 0.662 Volume to be controlled 1" Rv DA/12 = 0.695 ac-ft 30278.56 cf 3 Determine dimensions Desired length/width ratio 3 Pond width = 96.21523 80 approximate Pond length = 288.6457 287 approximate Depth above permanent pool required, ft 1.09025 1.5 Depth above permanent pool required, in 13.083 Actual Pond Provided 28890 by planimeter 4 Determine Release Rate - Assume 3 days Volume of Temporary 30300 30,30011 day 1 hr 11 min 3 days 124 hrs 160 min 160 sec Release Rate = 0.117 5 Outlet Pipe Size Required Q=Cd * A * (2gH)1/2 Q=.117cfs Cd=.52 g = 32.2 H = .69 ft A = .033 ft sq = 4.86 in sq r = 1.24 in d = 2.48 in (Use 2.5") Calculations By: Michelle Clements, EIT Reviewed By: D. Kermit Smith, PE �sQ Q Z Q- I- LLI w mON U U �ZOJ x O Z J d 0YQ O Lq o m O N CV II 04 II N II O II w J W J H O Z m = J QZ W N �Q (n Q UUm O H W O O CV _ N J II I- , Z O Z W U Loa- < CV Md Z I O p Z j O J CL W LLI Of D H p I of w F- o (n Cn F— W JS U 0 Z 0 CL Z 0 Z d- F- s `a Q W H ILMON U U �ZOJ .,xOZJ �UYQ *! U M nj O vi O N N II CA II II p II w O D J O H� O ZI m I En Z O x Cam) J4 w U <O Q Q 3J'd CO cD x Z in Z w M O O 04 wZ II J Z =O z w U in a J CV d d Z U H Q W J W w z N 0 U T- ui F- U V J J H O Permit No. (to be provided by DWO) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for. each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION Project Name: Del Laboratories I Contact Person: Jim Lawrence Phone Number: (gin )60!2-4'?00 For projects with multiple basins, specify which basin this worksheet applies to: 1 elevations Basin Bottom Elevation Permanent Pool Elevation Temporary Pool Elevation 17.0 ft. 21.0 ft. 22.5 ft. areas Permanent Pool Surface Area Drainage Area Impervious Area volumes Permanent Pool Volume Temporary Pool Volume Forebay Volume Other parameters SAMA1 Diameter of Orifice Design Rainfall Design TSS Removal 2 28890 sq. ft 12.6 ac. 8.6 ac. (floor of the basin) (elevation of the orif ace) (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) 6a , 800 ca. ft. (combined volume of main basin and forebay) 47380 cu. ft. (volume detained above the permanent pool) 20,000 cu. ft. (approximately 20% of total volume) 5.06 (surface area to drainage area ratio from DWQ table) 2.5 in. (2 to 5 day temporary pool draw -down required) 1 in. % (minimum 85% required) Form SWU-102 Rev 3.99 Page 1 of 4 Permit No. (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM IATET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Storrnwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. L PROJECT INFORMATION Project Name: Contact Person: Del Laboratories Phone Number: ( 910) 6 0 2— 4 2 0 0 For projects with multiple basins, specify which basin this worksheet applies to: 2 elevations Jim Lawrence Basin Bottom Elevation 18.0 ft. (floor of the basin) Permanent Pool Elevation 99 n ft. (elevation of the orifice) Temporary Pool Elevation 94 n ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area Drainage Area Impervious Area volumes Permanent Pool Volume Temporary Pool Volume Forebay Volume Other parameters SAIDA1 Diameter of Orifice Design Rainfall Design TSS Removal Z 26 , 750 sq. ft. 11.2 ac. /-g ac. (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) 5 7 _ 7 n 5 cu. ft. (combined volume of main basin and forebay) 6 9 , 415 cu. ft. (volume detained above the permanent pool) 29,240 — cu. ft. (approximately 20% of total volume) 5.482 2.5 in. 1 in. 85 % (surface area to drainage area ratio from DWQ table) (2 to 5 day temporary pool draw -down required) (minimum 85% required) Form SWU-102 Rev 3.99 Page 1 of 4 Wet Detention Pond Worksheet Project Del Laboratories, Inc. Pond # 2 30-Sep-02 1 Determine SAIDA Ratio Enter % impervious From applicable SA/DA table Next lowest % Impervious value Next highest % Impervious value SA/DA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf 84.7 from 85% removal table Percentage Ratio 80 5.2 90 5.8 5.482 11.2 0.613984 26745.14 2 Determine Runoff from 1" Storm Rv, runoff coeff = storm runoff, inches / rainfall, inches Rv = 0.05+0.009(%impervious) Rv = 0.8123 Volume to be controlled 1" Rv DA112 = 0.758 ac-ft 33024.87 cf 3 Determine dimensions Desired length/width ratio 3 Pond width = 94.41953 80 approximate Pond length = 283.2586 240 approximate Depth above permanent pool required, ft 1.234799 2 Depth above permanent pool required, in 14.81758 Actual Pond Provided at Permanent Pool 26750 by planimeter 4 Determine Release Rate - Assume 3 days Volume of Temporary Pool - 33100 cf 33,100.0011day 11 hr 11 min 3 days 124 hrs 160 min 160 sec Release Rate = 0.128 5 Outlet Pipe Size Required Q=Cd * A* (2gH)1 /2 Q = .128 cfs Cd = .52 g = 32.2 H=.94 A=.032ftsq =4.61 insq r = 1.21 in d = 2.42 in (Use 2.5") IoY Calculations By: Michelle Clements, EIT Reviewed By: D. Kermit Smith, PE �er,Ger_ st. nag Ilei, Wet Detention Pond Worksheet Project Del Laboratories, Inc. Pond # 1 1-Oct-02 Determine SAIDA Ratio Enter % impervious From applicable SAIDA table Next lowest % Impervious value Next highest % Impervious value SAIDA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf 68 from 85% removal table Percentage Ratio 60 4.5 70 5.2 5.06 12.6 0.63756 27772.11 2 Determine Runoff from 1" Storm Rv, runoff coeff = storm runoff, inches I rainfall, inches Rv = 0.05+0.009(%impervious) Rv = 0.662 Volume to be controlled 1" Rv DA/12 = 0.695 ac-ft 30278.56 cf 3 Determine dimensions Desired length/width ratio 3 Pond width = 96.21523 80 approximate Pond length = 288.6457 287 approximate Depth above permanent pool required, ft 1.09025 1.5 Depth above permanent pool required, in 13.083 Actual Pond Provided 28890 by planimeter 4 Determine Release Rate - Assume 3 days Volume of Temporary 30300 30,30011 day 1 hr 11 min 3 days 124 hrs 160 min 160 sec Release Rate = 0.117 5 Outlet Pipe Size Required Q=Cd * A * (2gH)1/2 Q=.117cfs Cd = .52 g = 32.2 H=.69ft A = .033 ft sq = 4.86 in. sq r = 1.24 in d = 2.48 in (Use 2.5") Calculations By: Michelle Clements, EIT Reviewed By: D. Kermit Smith, PE W o¢ O Cr zV) z W a ow 1� z Q Q ZILw rn F- 0 W MOM Y — d Z0 x O z J � UYQ n o Lq O N o N 00 N II N II II p w II J z O O m w I0 0 En w z J Q a- CDo W C9U Uwz vim¢ o z?iw ZN J- II cn �_LLJ J CD cD x Z z z W- IL En Z» O Z = a O in �� OQL Q �OU \mow `nUj ay cqF a J^c�a a000 v¢ z �oF- mLLI v¢¢ O:f J 0 J W W CL �iO�i.II 3 fn � fn 3 Q V) ¢ UUm OHWO z O Q W J W w z O V) 0 w x V) D U 9 I W w D F— L) Z) w w J Z) O Z O 0- Z O F- ,z LLJ F N LLJ F= z0 z p � (�Ts W C:) Q M Z (n Z W i. w CL O w 4' z Q azaEn En �w a a m O cn ou �ZOJ X O Z J * UYQ O It N II L►. O N H W J Z o Z I Q�- X 1 r m LLI JZ Q tmD O LJ C LLI WZN NLLJ ZLLJJ Z Z Z=> 2 JO x Z ��N OZ — OOC� � ID �� �QQ LLJ I-\ NCO NSW aR. J zj Q J U d a000 va Z � 0 �- m U QQ W JpJ W J UI 3 H' U) N Q IC UUm d- Q Q L- �O F-Wo Z O F- `Q W J W w z 0 V) In W En Ir U r- n Z ^O C L LLJ M F- U D F- U) L LI O z O Z O Z Lit H vi z Q z F= ( Pc) Permit No. (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original WO Stormwater Management Plan Review: includes an application form, a wet detention basin complete stormwater management plan submittal ipplement for. each basin, design calculations, and plans and specifications showing all basin and outlet ructure details. PROJECT INFORMATION 'rojectName: Del Laboratories I :ontact Person: Jim Lawrence Phone Number: (q i n ) r n ,?4 ? o o 'or projects with multiple basins, specify which basin this worksheet applies to: 1 ?levations 3asin Bottom Elevation 17.0 ft. Permanent Pool Elevation 21.0 ft. Temporary Pool Elevation 22.5 ft. areas Permanent Pool Surface Area 28890sq. ft. Drainage Area Impervious Area volumes Permanent Pool Volume Temporary Pool Volume Forebay Volume Other parameters SA/DA1 Diameter of Orifice Design Rainfall Design TSS Removal 2 12.6 ac. 8.6 ac. (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) G @', f30 0 cu. ft. (combined volume of main basin and forebay) J / j 47380 cu. ft. (volume detained above the permanent pohl) 20,000 cu. ft. (approximately 20% of total volume) 5.06 (surface area to drainage area ratio from DWQ table) 2.5 in, (2 to 5 day temporary pool draw -down required) 1 in. .25 % (minimum 85% required) Form SWU-102 Rev 3.99 Page 1 of 4 r vtuus. �tiv, (to be provided by DWO) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original )WO Stormwater Management Plan Review: � complete stormwater management plan submittal includes an application form, a wet detention basin .upplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. L PROJECT INFORMATION Project Name: Del Laboratories Contact Person: Jim Lawrence Phone Number: ( 910 ) 6 0 2 — 4 2 0 0 For projects with multiple basins, specify which basin this worksheet applies. to: elevations Basin Bottom Elevation 18.0 ft. Permanent Pool Elevation ? ? n ft. Temporary Pool Elevation 9 z _ n ft. areas Permanent Pool Surface Area 2 6', 7 5 0 sq. ft. Drainage Area 11.2 ac. Impervious Area volumes Permanent Pool Volume Temporary Pool Volume Forebay Volume Other parameters SAMA1 Diameter of Orifice Design Rainfall Design TSS Removal 2 9 4 9 ac. (floor of the basin) 2 (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) 979709 cu. ft. (combined volume of main basin and forebay) 6 9 415 cu. ft. (volume detained above the permanent pool) s 40 cu. ft. (approximately 20% of total volume) a 5.482 (surface area to drainage area ratio from DWO table) 2.5 in. (2 to 5 day temporary pool draw -down required) 1 in.. 85 % (minimum 85% required) Form SWU-102 Rev 3.99 Page 1 of 4 fact' 04 02 08:46a THE EAST GROUP 2528303954 P.1 The East Group, P.A. Engineering/Architecture/ Surveying/Technology PO Box 7305 or 324 South Evans Street Greenville, NC 27834 Phone: (252) 758-3746 Fax: (252) 830-3954 Facsimile Transmittal TO: Linda Lewis FROM: Michelle Clements Company: NC DENR Wilniin tore Office Re: Stormwater Management Permit Phone: 910-395-3900 Date: 10/4/02 Fax: 910-350-2004 Pages including this cover sheet: 7 Project #: 20020019 Project Name: I Del Laboratories Comments: Linda, Here are the revised calcualtions, revised details and revised cover sheet of the Wet Detention Pond Supplements. You should get the originals in the mail on Monday. Thanks for all you help. Have a great weekend. File: o:l ega-Formlfaxcover.doc Oct'04 02 08:46a THE EAST GROUP 2528303954 p.2 Wet Detention Pond Worksheet Project Del Laboratories, Inc_ Pond # 2 30-Sep-02 1 Determine SA/DA Ratio Enter % impervious From applicable SA/DA table Next lowest % Impervious value Next highest % Impervious value SA/DA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf RECEIVED OCT 0 4 2002 DW�j�y PROJ # 4308 0 2z- 84.7 from 85% removal table Percentage Ratio 80 5.2 90 5.8 5.482 11.2 0.613984 26745.14 2 Determine Runoff from V Storm Rv, runoff coeff = storm runoff, inches / rainfall, inches Rv = 0.05+0.009(%impervious) Rv = 0.8123 Volume to be controlled 1" Rv DA/12 = 0.758 ac-ft 33024.87 cf 3 Determine dimensions Desired length/width ratio 3 Pond width = 94A1953 80 approximate Pond length = 283.2586 240 approximate Depth above permanent pool required, ft 1.234799 2 Depth above permanent pool required, in 14.81758 Actual Pond Provided at Permanent Pool 26750 by planimeter 4 Determine Release Rate - Assume 3 days Volume of Temporary Pool - 33100 cf 33,100.00 1 day 11 hr 11 min 3 days 124 hrs. 160 min 160 sec Release Rate = 0.128 an�octur 5 Outlet Pipe Size Required Q=Cd' A' (2gH)1/2 Q= 128 cfs 3 C. Cd = .52 g = 32.2 H = .94 .. A=.032ftsq =4.61 insq r = 1.21 in d = 2.42 in (Use 2.5" ) Calculations By: Michelle Clements, EIT Reviewed By: D. Kermit Smith, PE Oct'04 02 08:47a THE EAST GROUP 2528303954 p.3 Wet Detention Pond Worksheet Project Del Laboratories, Inc. Pond # 1 1-Oct-02 1 Determine SAIDA Ratio Enter % impervious From applicable SAIDA table Next lowest % Impervious value Next highest % Impervious value SAIDA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf RECEIVED 0Ci 0 4 2002 DWQ PRUJ # (A)0'010& Z Z- 68 from 85% removal table Percentage Ratio 60 4.5 70 5.2 5.06 12.6 0.63756 27772.11 2 Determine Runoff from 1" Storm Rv, runoff coeff = storm runoff, inches I rainfall, inches Rv = 0.05+0.009(%impervious) Rv = 0.662 Volume to be controlled 1" Rv DA112 = 0.695 ac-ft 30278.56 cf 3 Determine dimensions Desired length/width ratio 3 Pond width = 96.21523 80 approximate Pond length = 288.6457 287 approximate Depth above permanent pool required, ft 1.09025 1.5 Depth above permanent pool required, in 13.083 Actual Pond Provided 28890 by planimeter 4 Determine Release Rate - Assume 3 days Volume of Temporary 30300 30,30011 day 1 hr 11 min 3 days 124 hrs 160 min 160 sec Release Rate = 0.117 5 Outlet Pipe Size Required Q=Cd ' A " (2gH)1 /2 Q=.117cfs Cd=.52 g = 32.2 H=.69ft A = .033 ft sq = 4.86 in sq r = 1.24 in d = 2.48 in (Use 2.5") Calculations By: Michelle Clements, EIT Reviewed By: D. Kermit Smith, PE Oct•04 02 08:47a THE EAST GROUP 2528303954 p.4 A N WN o N 3� W o A I— U O W P4 a 1LLI F- Q a z a En F-'Lj 0 a m o cn C7 U ¢ Z O J OSe Q O Lo CV II a O F 0 �hUO ¢ er z of m V -cc Q LLI (IfJ pJ W W � O Ln ¢ UUO %tim O H W O WE N N II w J z a Iq OD r II O m J � O N CD W to O:1W z ui II O Z 0 .J Z z d= le Z Q ro �Ofw `n°W OM R- c�iaa z 0 W .J W W z 0 En go Ld in U v Z LLI U D Ln W J O Z O a- Z O H �Z W F- W 0 z Llu Lo Oct' 04 02 08:47a THE EAST GROUP 2528303954 p.5 A �, W N !� N o M/ cC=.� N ^ �..� F— cD 0 o a H sQ Q CL Cn W 0 � m =O Cn CL CJ U -d- Xoz-i �d- C-) Y Q rw oI NI N it w o J ~O o z m z C W J W I V) a a o W 0 U La [O CD W C?gw N Q JZ Q cc Z Ld? II +l 2 EnOC9 ui J x Z zzW- W e ?» Oz_ �' CC) cow � W i OJJ C.0 W Ci \ N)a0 NSW JLd CL \OM- LN J = Q Z CL w Ln }r3Q N Q UUm d QQL� 4tt O F- Ld Z U W Cn I 0 z a W H C3 �J H J LLJ z O CL z C) z LLJ ~ Q Z Oct n0.4 02 OS- 47a THE ERST GROUP ene"Jujua1%I� 4G_ F- Permit No. 5 %, be provided by DWO State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORIv1WATER IvIANAGEMENN T PERIvTIT APPLICATION FORM WET DETENTION BASIN S'L�BLEMENT Ms form may be photocopied fnr use as an original �R Stornawater 1�Ianasement Plan Review: lication form, a wet detention basin complete stormwater management Plan submittal inciudesdan aP showing all basin and outlet supplement for each basin, design calculations, and pspecifications sm:cture de~.ails. I. PRO.IFCT NFORNUTION Del Laboratories-� UO LAB-- L�'� p,oiect Name. 9I0 602-4200 one Number: i Contact Person: 2 For, oza)ects with. multiple basins, specify which baste this worksheet applies to: elevarions 1B.0 ft. Basin Bottom Eleuauon pe. anent pool Elevation _,,orary pool Elevation 2 �- ft. areas permanent pool Surface Area 2 6 , ? 5 0 sq. ft. 11.2 ac. Drainage Area T raper 3ious Axel volumes peirnment Pool VoliMe Temporary Pool Volume Porebay Volume Other parameters SA/DAI ,Diameter of Orifice Design- Rainfal Design TSS Removal Form swu_142 Rev 3.99 o i Q ac. (floor of the basin) (elevation of the orifice) (elevation of the discharge structure wedZow) (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) cu. ft. (combined volume of "I"n basin and forebay) cu. ft. (volume detained above the permanent POOP 5 4r)cu. ft. (approximately 20% of total volume) $ 52 (surface area to drainage area ratio from DWQ table) . r i 2.5 in. (2 to 5 day temporary pool draw -down required) 1 in. 5 % (minimum 85% required) Page 1 of 4 Footnotes: 1 When using the Division SA/DA tables, the correct SA/DA ratio for permanent 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 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BW manual provides design tables for both 85% TSS removal and 90% TSS removal. U. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) 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. Tf a requirement has not been met, attach justification. Applicants Initials t1'1 C a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). ly%-5 C b. The forebay volume is approximately equal to 20% of the basin volume. 11`\ 't-XI c. The temporary pool controls runoff from the design storm event. t11 C d. The temporary pool draws down in 2 to 5 days. \IV=,C- e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) 111\`>C_ f. The basin length to width ratio is greater than 3:1. t11�a[ g. The basin side slopes above the permanent pool are no steeper than 3:1. h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). M1 >c i. Vegetative cover above the permanent pool elevation is specified. j. A trash rack or similar device is provided for both the overflow and orifice. 1t�Ja k. A recorded drainage easement is provided for each basin including access to nearest right- of-way. 1115( 1. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. tj �y m. A mechanism is specified which will drain the basin for maintenance or an emergency. M. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. ..is system (check one) 0 does 0 does not incorporate a vegetated filter at the outlet. This system (check one) 0 does 0 does not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated 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 as designed. 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 (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads feet in the main pond, the sediment shall be removed. When the permanent pool depth reads ' S feet in the forebay, the sediment shall be removed. Sediment Re oval Fl., 20.5 75 -------------- -- Bottom Ele ation FOREBAY BASIN DIAGRAM ( fill in the blanks) Permanent Pool Elevation 2 2 . 0 Sediment Removal Elevation 19 . 0 ---------------------------------- Bottom Elevation 1 R _ fl MAINPOND 75% 25% 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 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 practical. Form SWU-102 Rev 3.99 Page 3 of 4 7. All components of the wet detention basin system shall be maintained in good working order. T acknowledge and agree by my signature below that I am responsible for the performance of the seven maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: �, •�• �; sz �c �r i 1830 Carver DRive, Rocky Point, NC 28547 Note: 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 I, A64.jw.j 61e.-A &'-& 4 , a Notary Public for the State of ArA CA0yI JLA , County of Aft , do hereby certify that S,_i !&g4fAAr-G personally appeared before me this t I` day of Mao , -ZAp-Z—,, and acknowledge the due execution of -the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, SEAL My commission expires r4• Or W � T04 a 42- R. eF�0 IkotNR PUBL.%G z � AVER CO" 4 yr.Lgs t lL=xpr�� �QQtit_li,�1(( Form SW-102 Rev 3.99 Page 4 of 4 LETTER OF TRANSMITTAL Engineering - Architecture - Surveying - Technology P.O. Box 7305 / 324 S. Evans Street, Greenville, NC 27834 Phone 252-758-3746 Fax 252-830-3954 To: NCDENR-Division of Water Quality Date: 10/1/02 1 Proj. No.: 20020019 127 Cardinal Dr. Ext. Attention: Linda Lewis Wilmington, NC 28405-3845 RE: Del Labs I D#: We are sending you the followin : Shop Drawings X Prints Samples Copy of Letter Specs Payment Application Change Order Plans Other Copies Date No. Description 3 C2.1 General Grading, Drainage, Erosion & Sedimentation Control Plan 3 C5.1 Utility Details Storm Water Management Application Form 3 3 Wet Detention Basin Supplement -Pond 1 3 Wet Detention Basin Supplement -Pond 2 3 Revised Erosion Control Spec, These items are transmitted as checked below: For Approval Reviewed X For Your Use Reviewed as Noted As Requested Revise & Resubmit For Review and Comment Returned No Action Prints returned after Loan to us � Remarks: If you have any comments, contact Michelle Clements i V� CEIVED ° OCT 0 2 2002 DWQ Co ies: PROJ # SW� d2C)6022 Architect: Owner Engineer: Other: Contractor: Other: Signed: Sonny Jackson T-NCDENR-10-1-02_Unda Lewls_slj SECTION 02120 - EROSION AND POLLUTION CONTROL PART 1 -GENERAL Related Documents: The general provisions of the contract, including the General and Special Conditions and Division-1 Specification sections apply to work of this section. Description of Work: The extent of the work required under this section is that required to minimize water, air, and noise pollution and soil erosion and siltation. Temporary erosion control measures which may be necessary include, but are not limited to, temporary berms, dikes, dams, drainage ditches, silt basins, silt ditches drains, structures, vegetation, mulches, mats, nettin -Perimeter swaies, slope gor devices that are necessary to control or restrict erosion. Temporary erosion control hme suresdmay include work outside the right-of-way or construction limits where such work is necessary as a result of construction such as borrow pit operations, haul roads, plant sitdaes, equipment storage sites, and disposal of waste or debris. The Contractor shall be liable for all mages to public or private property caused by silting or slides originating in waste areas furnished by the Contractor. A wet detention basin will be installed for stormwater treatment. The aquatic bench indicated on the drawings will be planted with the species indicated at the end of this section. Related Work Specified Elsewhere: Earthwork: Section 02300, Seeding: Section 02228. QUALITY ASSURANCE Codes and Standards: North Carolina Sedimentation Pollution Control Act of 1973 and the Rules and Regulations promulgated pursuant to the provisions of said act. "Standard Specifications for Roads and Structures", North Carolina Department of Transportation (DOT) latest edition. In the event of conflict between the regulations listed above and the requirements of these specifications, the more restrictive requirement shall apply. SANCTIONS Failure of The Contractor to fulfill any of the requirements of this section may result in the Owner ordering the stopping of construction operations until such failure has been corrected. Such suspension of operations will not justify an extension of contract time nor additional compensation. Failure on the part of the Contractor to perform the necessary measures to control erosion, siltations, and pollution will result in the Architect/Engineer notifying the Contractor to take such measures. In the event that the Contractor fails to perform such measures within 24 hours after receipt of such notice, the Owner may suspend the work as provided above, or may proceed to have such measures performed with other forces and equipment, or both. The cost of such work performed by other forces will be deducted from monies due the Contractor on his contract. RECEIVED OCT 0 2 2002 DWQ PROJ # SW �0 ZW. M EROSION AND POLLUTION CONTROL 02120 - 1 PART 2 - PRODUCTS SILT FENCES Posts: Wooden posts shall be a mi„imu;�, of %+;g in diameter and 6' in length. Posts shall b creosote or pentachlorophenol treated southern pine, a of Steel posts shall be 5' in height and be of self -fastener angle steel type. Posts shall be spaced at 10' max. when sift fence is backed with wire mesh, 7' when no wire mesh is used or as required by the Architect/Engineer. Woven Wire: Woven wire fencing shall conform to ASTM Al 1'6 for Class 3 galvanizing. F shall be a minimum of 32" in width and shall have a minimum of 6 line wires with 12" stay spacin p g Fabric g. The to and bottom wires shall be 10 gauge while the intermediate wires shall be 12-1/2 gauge. Wire fabric shall be fastened to wood posts with not less than #9 wire staples 1-1/2" long. Fabric: Provide woven synthetic fiber designed specifically for silt fence conforming to N g specifications, 9 NCDOT DRAINAGE STONE Check Dam: NCDOT Class 8 Stone Rock Silt Check Dam: NCDOT Class B Stone and Glass I material NCDOT No. 57. TEMPORARY SEEDING: Temporary seeding, when required, shall be performed in accordance with the recommend contained in "Guide for Sediment Control on Construction Sites in North Carolina", published by the Soil Conservation Service and Section 02228 of these specifications, recommendations PART 3 - EXECUTION and noise pollution caused by his operationsGeneral: The Contractor shall take whatever measures are necessary to minimize soil erosion siltation, water, air, . The Contractor shall also comply prev With the applicable regulations of all legally constituted authorities relating to pollution and and control. The Contractor shall keep himself fully informed of all such regulations which way affect the conduct of the work, and shall at all times observe and comply with all ention regulations. In the event of conflict between such regulations and the requiremen such in any specifications, the more restrictive requirements shall apply. is of the EROSIONS AND SILTATION CONTROL The Contractor shall exercise every reasonable precaution throughout the life of the project to prevent the eroding of soil and the silting of rivers, streams, lakes, reservoirs, other water impoundments, ground surfaces, or other property. Prior to suspension of operations on the project or any portion thereof, the Contractor necessary measures to protect the construction area, including but not limited to borrow souarces,all soil type base course sources, and waste areas, from erosion during the period of suspension. EROSION AND POLLUTION CONTROL 02120 - 2 Provide diversion ditches and berms as necessary to prevent concentrated flow of water across disturbed areas. Provide a settling basin with a gravel filter outlet for all water pumped from trenches or dewatering equipment. Pumping of that water directly into any stream, pond, or 'p-latercourse is prohibited. Temporarily fertilize, seed and mulch the disturbed areas as soon as practicable and, in all cases, no later than 7 days after completion of the work at a particular site. When construction operations are suspended for more than 30 days, provide temporary seeding and mulching of all disturbed areas including those areas in which further construction is necessary. Erosion control measures installed by the Contractor shall be acceptably maintained by the Contractor. Silt fences shall be provided where shown on the drawings and/or as necessary to prevent erosion. Catch basins shall be protected from silt by placing silt fence around the opening until vegetative cover is established or pavement is placed. WATER AND AIR POLLUTION The Contractor shall exercise every reasonable precaution throughout the life of the project to prevent pollution of rivers, streams, and water impoundment's. Pollution's such as chemicals, fuels, lubricants, bitumens, raw sewage, and other harmful waste shall not be discharged into or alongside of rivers, streams, or impoundments, or into natural or manmade channels leading thereto. A minimum of four distinct plant species, two shrub species and two herbaceous ground covers, shall be planted on the aquatic bench as indicated on the drawings. The plants species must be chosen from the table following this section. The plants shall be spaced according to Table 4.6. DUST CONTROL The Contractor shall control dust throughout the life of the project within the project area and at all other areas affected by the construction of the project, including, but not specifically limited to, unpaved secondary roads, haul roads, access roads, disposal sites, borrow and material sources, and production sites. Dust control' shall not be considered effective where the amount of dust creates a potential or actual unsafe condition, public nuisance, or condition endangering the value, utility, or appearance of any property. NOISE CONTROL The Contractor shall exercise every reasonable precaution throughout the life of the project to prevent excessive and unnecessary noise. The Contractor shall choose his methods so as to minimize the disturbance of area residents. EROSION AND POLLUTION CONTROL 02120 - 3 permanent pool. An extended detention wetland must be also be designed with a forebay, as is a wet detention pond. a- 4 c- The major difference between an extended detention wetland and a wet detention basin is that the allocation of surface area to different pond depths. For the system to function as a wetland, 70% of the area of the permanent pool needs to be designed as a marsh with a depth of 0 to 18", with an almost equal distribution of area (35% and 35%) between 0" to 9" and T" to 18." The other major difference is that there needs to be a small pool (15 % of the surface area) where the outlet is located to prevent sediment from interfering with the outlet. structure functions. The balance of the area is flexible with respect to depth. A most important consideration when designing both extended detention wetland systems and pocket wetland systems is the specification and installation of plants. Tables 4.1, 4.2, and 4.3 in chapter 4 will give a good indication of those plants that can be used in areas that will not be continually inundated. The ponding times, shown in days under Ponding, will give a good indication of what zones of the wetland the species should be planted. Shown below in Table 2.2 are those plants that should do well when planted within the normal, permanent pool of the wetland. Table 2.2 Wetland Plants ScienVwl Name Commercial Inundation Wildlife Value Notes Common Name Form AvaHability Tblegnce Peltaiuim virginia Emergent yes up to I ft. High, Berries are Full son to partial shade Arrow arum eaten by wood ducks Saggitaria ladfolia Emergent yes up to 1 ft. Moderate. Tubers and Aggressive colonizer Arrowhead/ Duck potato seeds eaten by ducks Andropogon virginicus Perimeter yes up to 3 in. High. Songbirds and Tolerant of fluctuating water Broomsedge browsers. Winter food levels dt partial shade and cover Andropogon glomerarus Emergent yes up to 1 ft. Requires full sun Bushy Beartiffrass Typha spp. Emergent yes up to 1 ft. Low. Except as cover Aggressive. May eliminate Cattail otherspecies. Volunteer. High pollutant treatment. Cerarophyllum DWQersum Submergent yes yes Low food value. Good Free floating SAV. Shade Coontail habitat and shelter for tolerant. Rapid growth. fish and invertebrates Scirpus pungens Emergent yes up to 6 in. High. Seeds. cover. Fast colonizer. Can tolerate Common Three -Square Waterfowl, songbirds psriads of dryness. Full sun. ffigh metal removal. Lernna spp• Submergend yes yes High, Food for High metal removal Duckweed Emergent waterfowl. and -fish Saururus cemuus Emergent yes up to I ft. Low, except for wood Rapid growth. Shade Lizard's Tail ducks tolerant. Hibiscus moscheutos Emergent yes up to 3 in. Low. Nectar. Full sun. Can tolerate Marsh Hibiscus Emergent yes up to 1 ft. Moderate. Ducks. mriodic dryness Full sum to partial shade Pontederia cordata Pickerelweed Nectar for butterflies. Poramogeton pectinatus Submergent yes yes Extremely high. Removes heavy metals. Pond Weed Waterfowl, marsh and shorebirds. Leersia orywides Emergent yes up to 3 in High. Food and cover. Full sun although tolerant - Rice cut s shade. Provides some is Carer spp. Emergent Sedges Scirpus valid:sh Emergent Soft -stem Bu Polygonnum spp. Emergent Smartweed Juncus ef,�esus Emergent Soft Rush y' Nuphar lureum Emergent S atterdock ye Panicum vergarum Perimeter Switchgrass ye Acorus calamus Perimeter Sweet Flag ye Elodea canadensis Submergent ye; Waterweed Valisneria americana I Submergent yeS Wild Celery Zhania aquatica Emergent es Wild Rice y Table from: Desier�of Stormwater Wetlands Systems euide Re 'on, Schueler shoreline stabilization es up to 3 in. High. Waterfowl and Many weamd and several birds. u i es up to 1 ft. Moderson ate. Good cover Full sun. Aggressive weedv and food• miens such as P. perfoliaturn es up to I ft. High. Waterfowl. Fast colonies Tolerant of i songbirds. Seeds and fluctuating water levels. cover. :s up to I ft. Moderate. Tolerates wet or dry • conditions. ; s up to 3 ft. Moderate for food but Fast colonizer. Tolerant of hiEh for cover. fluctuating water levels. s up to 3 in. High. Seeds, cover for Tolerates wet and dry waterfowl and conditions. son birds. s up to 3 in. Low. Tolerant of dry periods. Not j a rapid colonizer. Tolerates acidic conditions s yes Low. Good water oxygenator. High nutrient, copper, manganese and chron ium removal. yes High. Food for Tolerant of murky water and waterfowl. Habitat for high nutrient loads. fish and invertebrates. I - up to I ft. High. Food for birds. Prefers full sun. -lines for creating diverse and effective stormwa= wetlands in the mid Atlantic 2.7 Design Requirements for Pocket Wetlands In those situations where a combination of stormwater BMPs will be utilized to achieve the required 85% TSS removal, pocket wetlands in combination with grassed swales or filter strips can provide the needed removal. For design purposes these can be thought of as a special case of the extended detention wetland, or possibly a small wet detention pond with special emphasis placed on the wetland plantings. The sizing process should follow that of the wet detention basin, but with the following table (Table 2.3) used in place of Table 1.1. For example, a development of 4.5 acres, with 3.825 acres of imperviousness (85% imperviousness) would need a pocket wetland that had 0.96% of 4.5 acres of permanent pool. One notable difference between this table and Table i.1 is that no depths are given. An average depth of two feet is assumed. 19 4.12 Number and Size ofplant Species A minimum of three species of trees and three species of shrubs should be selected to insure diversity. in addition to reducing the potential for monoculture mortality concerns, a diversity of trees and shrubs with differing rates of transpiration may ensure a more constant rate of evapotranspiration and nutrient and pollutant uptake throughout the growing season. Herbaceous ground covers are important to prevent erosion of the mulch and the soil la herbaceous ground covers are identified in Table 4.5. yam• Suitable The number of tree and shrub plantings may vary, especially in areas where vital to site development, and should be determined on an individual site basis. on average,thetics and visibility are and shrubs should be planted per acre. For example, a bioretention area1000 trees contain a combination of trees and shrubs totaling 14 individuals. The recommended 15' x 40' would maximum number of individuals and spacing are given in Table 4.6. mmended minimum and Two to three shrubs should be specified for each tree (2:1 to 3:1 ratio of shrubs to trees). Table 4.6 Recommended Tree and Shrub Spacing Tree Spacing Shrub Spacing Total Density (feet) rs e.. Averse " 12 �400 12 8 100t) vl inum 11 7 At installation, trees should be 2.5 inches in caliper, and shrubs 3 to 4 feet in height or 18 to 24 inches in spread. Ground cover may be as seed or, preferably, plugs. The relatively mature trees and shrubs are important to ensure that the installation of cants are y size requirements for bioretention process (i.e., evapotranspiration, pollutant uptake)P readily contributing to the 4.13 Plant Material Layout There are two ,guidelines that. should apply to all bioretention areas. First, woody plant material should not ib placed- within the immediate trees areas of where flow will be entering the bioretention area. Besides Possibly concentrating flows, trees and shrubs can be dams recommended that trees be planted � as a result of the flow. Secondly, it is ter of bioretention shading and sheltering of bioretention areas and to creatperie mierocl mate which will o M ximize the exposure from summer solar radiation -and winter freezes and w the in Figure 14. inds. An example planting plan is shown Often designers will find that the environmental factors such as wind and temperature site but also between bioretention areas. As a result, the designer may need to rer the platconly on ement of each plant. An example would be to con sider placing evergreen trees or other wind tolerant species on the northern end of a bioretention area, against cold winter winds. 53 END OF SECTION 02120 EROSION AND POLLUTION CONTROL 02120 - 10 P. 1 COMMUNICATION RESULT REPORT ( OCT. 3.2002 3:54PM ) FILE MADE 826 MEMORY TX OPTION REASON FOR ERROR E-1) HANG UP OR LINE FAIL E-3) NO ANSWER i Date: OLIaberr 3�1 -21 To: Michelle 9e Company: ThO f FAX ##: 25�Tg r DWQ Stormwa ll 1 Project None; MESSAGE; Dear Michelle: TTI NCDENR WIRO ADDRESS (GROUP) RESULT PAGE ----------------------------------------------------- 8-2528303954 OK P. 1/1 E-2) BUSY E-4) NO FACSIMILE CONNECTION Michael F. Easley, Governor William G. Ross, Jr. Secretary North Carolina Department of Environment and Natural Aisourcas Alan W. Klimek, P,E„ Director Dlvislon of Water Quality Wilmington Regional ,Office FAX COVER SHEET No. of Pages: 1 -� It$ From: Linda Lewis Group Water Quality Section - Stormwater 1954 FAX # 910,350-2004 Phone # 910-395-3000 Number: SW8 020622 Laboratories Why did YOU c hange the volume used to calculate the orifice size? The 3" orifices are too large. The 1" vol ; e I lust be used to calculate the orifice, with the average head associated with the temporgry pool 010 at on specified on the supplement. For Pond 1, that would be 30,279 cubic feet and .69 feet of aveiag head. For Pond 2, it will be 33,025 cubic feet at 0.94 feet of average bead, 0� A`T��' > ' =i Date: October 3, 2002 To: Michelle Clements Company: The East Group FAX #: 252-830-3954 Michael F. Easley, Governor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E., Director Division of Water Quality Wilmington Regional Office FAX COVER SHEET DWQ Stormwater Project Number: SW8 020622 Project Name: DEL Laboratories MESSAGE: Dear Michelle: No. of Pages: 1 From: Linda Lewis �Al Water Quality Section - Stormwater FAX # 910-350-2004 Phone # 910-395-3900 Why did you change the volume used to calculate the orifice size? The 3" orifices are too large. The 1" volume must be used to calculate the orifice, with the average head associated with the temporary pool elevation specified on the supplement. For Pond 1, that would be 30,279 cubic feet and .69 feet of average head. For Pond 2, it will be 33,025 cubic feet at 0.94 feet of average head. Please revise the calculations and details. I see three different surface areas for the permanent pool of Pond 1. The first page of the calculations says the actual pond area by planimeter is 27,800 ft2; the second page of the calculations (the area/volume tables) indicate that the total area at 28,890 ft2; and finally, the supplement form says 29,130 ft2. All three must agree, so please decide which one it will be and revise the appropriate items. You've used the SAND A values for a 3.5' deep pond instead of a T deep pond or Pond 1. The surface area you have provided is in excess of the minimum. Please be aware that the permit I write will not show the same minimum required surface area, since yours is so much higher than is actually required. S:\WQS\STORMWAT\ADDINFO\2002\020622.00T :INFA N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 (910) 395-3900 Fax (910) 350-2004 Customer Service 800-623-7748 Wet Detention Pond Worksheet Project Del Laboratories, Inc. Pond # 1 1-Oct-02 1 Determine SA/DA Ratio Enter % impervious From applicable SA/DA table Next lowest % Impervious value Next highest % Impervious value SA/DA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf 68 from /o removal table Percentage RaticP 60 4.5 70 5.2 5.06 12.6 0.63756 27772.11 2 Determine Runoff from 1" Storm Rv, runoff coeff = storm runoff, inches / rainfall, inches Rv = 0.05+0.009(%impervious) Rv = 0.662 Volume to be controlled 1" Rv DA/12 = 0.695 ac-ft 1C 30278.56 cf 3 Determine dimensions Desired length/width ratio Pond width = Pond length = Depth above permanent pool required, ft Depth above permanent pool required, in Actual Pond Provided 4 Determine Release Rate - Assume 3 days Volume of Temporary 47380 47,38011 day 11 hr 11 min 3 days 124 hrs 160 min 160 sec Release Rate = 0.183 5 Outlet Pipe Size Required Q=Cd * A * (2gH)1/2 Q=.183cfs Cd=.52 g = 32.2 H=.75'It A=.045ftsq=6.6insq r = 1.45 in d = 2.9 in (Use 3.0") q-, 3 S`1v RECEIVED OCT 0 2 2002 DWQ PROJ # SWe0'Z0C0Z2. 3 96.21523 80 approximate 288.6457 287 approximate 1.09025 1.5 13.083 — 27800 by planimeterD ,ram IN �Jrs P /a//MS Del Laboratories, Inc. Stormwater Project No. SW8 020622 1-Oct-02 Pond 1 Surface Area Incremental Cumulative Elevation (sf) Volume (cf) Volume (cf) 17 7624 0 9291 18 10958 9291 12745 19 14532 22036 16519 20 18506 38555 20563 21 22620 59118 23685 22 24750 82803 25870 23 26990 108673 Forebay 19 3000 0 3745 20 4490 3745 5380 21 6270 9125 6940 22 7610 m v-5 16065 ia4v 7940 23 8270 24005 Wet Detention Pond Worksheet Project Del Laboratories, Inc. Pond # 2 30-Sep-02 Determine SA/DA Ratio Enter % impervious From applicable SA/DA table Next lowest % Impervious value Next highest % Impervious value SA/DA Drainage Area, DA, acres Surface Area, SA, acres Surface Area, sf 84.7 from 85% removal table Percentage Ratio 80 5.2 90 5.8 5.482 11.2 0.613984 26745.14 2 Determine Runoff from 1" Storm Rv, runoff coeff = storm runoff, inches / rainfall, inches Rv = 0 .05+0.009(% impervious) Rv = 0.8123 Volume to be controlled 1" Rv DA/12 = 0.758 ac-ft /"33024.87 cf \ J 3 Determine dimensions Desired length/width ratio 3 Pond width = 94.41953 80 approximate Pond length = 283.2586 240 approximate Depth above permanent pool required, ft 1.234799 2 Depth above permanent pool required, in 14.81758 Pond Provided at Permanent Pool yplaniActual (26�75Ome 4 Determine Release Rate - Assume 3 days Volume of Temporary Pool - 62435 cf {, 62,435.00 1 day 11 hr 11 min 3 days 124 hrs 160 min 160 sec Release Rate = 0.241 5 Outlet Pipe Size Required Q=Cd * A * (2gH)1/2 Q = .240 cis Cd = .52 g = 32.2 H=1.0 A=.047ftsq=6.8insq r = 1.47 in d = 2.94 in (Use 3.0") Del Laboratories, Inc. Stormwater Project No. SW8 020622 30-Sep-02 Pond 2 Surface Area Incremental Cumulative Elevation (st) Volume (cf Volume (cfl 18 6480 0 7945 19 9410 7945 10992.5 20 12575 18937.5 14322.5 21 16070 33260 17937.5 22 19805 51197.5 20865 23 21925 72062.5 22837.5 24 23750 94900 Forebay 20 0 0 1517.5 21 3035 1517.5 4990 22 6945 6507.5 7977.5 23 9010 14485 10755 24 12500 25240 Michael F. Easley, Governor OFwATF9 O� QG Mr. Jim Lawrence, Vice President DEL Laboratories, Inc. 1830 Carver Drive Rocky Point, NC 28457 Dear Mr. Lawrence: William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E., Director Division of Water Quality Wilmington Regional Office September 27, 2002 Subject: REQUEST FORADDITIONAL INFORMATION Stormwater Project No. SW8 020622 DEL Laboratories Addition Pender County The Wilmington Regional Office received a Stormwater Management Permit Application for DEL Laboratories Addition on August 16, 2002. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: Whilc the minimum required surface area calculations are now based on the coastal SA/DA tables for both ponds, the calculations for Pond 1 indicate that a minimum of 27,903 ftz must be provided at the permanent pool elevation of 21, but only 17,750 ftz is provided. The supplement, however, reports 18,211 W. In either case, the surface area at permanent pool is deficient by several thousand square feet. For Pond 2, the calculated minimum surface area is 27,199 ftz, but only 25,590 ftz is provided. Please provide the minimum surface areas in each pond at the permanent pool elevation. 2. What is the drainage area for Pond 1? The calculations now use 13.6, but no revised drainage area delineation was submitted to indicate that the original 12.6 acre drainage area has changed. Page 2 of the application still reports 12.6 as the drainage area. If the drainage area is now 13.6 acres, please submit a revised drainage basin delineation map. 3. The percent impervious for Pond 1 has only been changed on page 2 of the application. The calculations still use 63% instead of thocorrect 68%. If the drainage area is 13.6, then the percent impervious is 63.24%, but if it is 12.6, then the 68% is right. Please be consistent and revise the calculation or application as needed to accurately reflect the proposed condition. 4. Please check the built -upon areas for Pond 2. The top part of Section 111.6 indicates a total BIJA of 420,790 ftz, but the bottom area shows a total of 3,757,050 W. However, if you add up the numbers shown in the lower part (proposed building plus parking), they total 435,600 W. Please check and revise as necessary. 5. Rip rap is good at slowing the energy -of the incoming runoff, but it will not do a good job of spreading out the flow across the width of the vegetated filter. Please specify a more suitable device to spread out the flow. ATTWA N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 (910) 395-3900 Fax (910) 350-2004 Customer Service 800-623-7748 Mr. Lawrence September 27, 2002 Stormwater Project No. SW8 020622 6. Please submit a new copy of the specifications with the correct wetlands plants section. 7. The forebay volume, as I just recently was informed, is supposed to be 20% of the total volume in the pond, i.e, permanent pool volume plus temporary pool volume. For Pond 1, the total volume is around 81,000 cubic feet, so the forebay volume should be in the range of 14,500 cubic feet to 17,800 cubic feet. Please revise. 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 October 27, 2002, 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 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 thiai 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) 395-3900. Sincerely, 4, 6&' od" Linda Lewis Environmental Engineer RSS/arl: S:\WQS\STORMWAT\ADDINFO\2002\020622.SEP cc: Linda Lewis Michelle Clements 4 3 2 1 15 14 13 12 10 I 9 0 7 5 SAWCUT JOINT (TYP) 1'-6' 1'-6_ I . z_ 63'-0" (TYP.) 4000 PSI 2 �- NEENAH R-4990-DX-TYPE A CONCRETE 04 I 4000 PS{ 4000 PSI P CONCRE CONCRETE EXISTING EXISTING . " ". v', I ft. . . a' • ' ' :o : • , ' ", . ', . v ' v • » . . v'-.," d, - - v' . PAVEMENT 4 -0 4 -0 4 -0 PAVEMENT BLDG. 4 -0 4 -0 4 -0 BLDG. BLDG. 2 -0 4 -0 2 -0 BLDG• 1 0� �;0� a » `� v WALL WALL WALL �� 12 ;��;�/\ v. v WALL �� 1.09 1.0�° / / \ �`''"`-,., 4 CABC �/� Q„ , o �� 2) #4 REBAR CONTINUOUS I _... I I I - i I �'i '` `"`,.��,,..� .: - � � � `// 'v 6". �TYP EACH SIDE) 4" CABC SG cn �E5 SCpp cn RN�S Sl.pp N P��Es - _ I i . p . OA,E w d P F w �! P F V w �, `I VqR/ pP VAR/ w OPT , qR1 % j / : • .: v w (6) 1�4 REBAR CONTINUOUS FS w c�L ( FS s[ Sti- . , I I I I ES a 5�' .. ' I I-2, CABC BASE COMPACTED SUBGRADE /,' ; . �� TURN BOTTOM BARS UP AND > �" . > . 11�_l___ (1'y') /j vv.: • \ OUT LIKE STIRRUPS AT EACH END s„ ,._s_ .,,.,� (SEE PVMT. DETAILS) / , 4 0 j / , \ #4 STIRRUP 0 16' O.C. o , o.. ' v : v: � 6" 4" 4" ��j��i��/ `1!��%�� TYPICAL TRUCK DOCK SECTION ® ,1 5 CONCRETE SWALE DETAIL CONCRETE SWALE DETAIL 2 CONCRETE SALE DETAIL TYPICAL PACKING BAY P�MT� SECT 1 A 1 TYPICAL TRENCH DRAIN C2.1 N.T.S. N.T.S. N.T.S. 4 N.T.S. C2.1 N.T.S. C2.1 C2.1 C2.1 C2.1 N.T.S. . 1 , �� I I DB 15/1I PG 137 , I 50 STONE - �� , ,,,. 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RIP RAP _ _ __ _w, .--t,f.---,�-._.,..� . w. -:- w .- -_.� .,�.."�..,_ � .. � �_ _. � ..M._ � ..�... w� � g � , f ,� N 67'14 3C W 1706.14 (OLD PROPE LINE) '`� I" I , INV. 19.57 . ,: ti � } c � x�, �/ -- 22 90 ,� IV h' OVERFLOW � ,; '' / 7,2„ LF: �•S ,ta3,p j r t 50' STONE'' b' / , 2� ^PP 04. / A. ��°' A CONSTRUCTION '� DS' `� '�` 1 �` x / ` //. SPOIL AREA ENTRANCE ' - f 7.7� RIP 20' BUFFER , / '� x RAP / I 30' VEGETATIVE '� ''�; -' •ram EXISTING DITCH �J . � � � / � � I FILTER 60' �,.. , JA � 9 s �p �'�,•'� '' ISOLATED WETLAND WETLANDS CFjN1 � /� WETLANDS I WETLANDS ,- TO BE FILLED (0.08 AC.) (TO REMAIN DEL. LABORATORIES �0 \I (TO REMAIN UNDISTURBED) I (TO REMAIN UNDISTURBED) UNDISTURBED) A I 50: 25 0 50' SILT FENCE (TYP.) 1 "= 50'-- 0" / A 3 X X X X THIS DRAWING IS THE PROPERTY OF THE ST GROUP, P.A. ANY USE, REUSE, REPRODUCTION, DISPLAY OR SALE OF THIS DRAWING WITHOUT WRITTEN CONSENT OF E EAST GROUP, P.A. IS STRICTLY PROHIBITED. COPYRIG , THE EAST GROUP. P.A. 2002 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 I N m L = J H G F C C n ��0gd�4tt4i4QtJ o���� 0® ®®, © ' �'�, ®® \�, 42 0 SA m s zI ���-¢�'�a�'�/ 1% ��AI I GRADING NOTES: 1. ALL VEGETATION AND TOPSOIL SHALL BE STRIPPED FROM FILL AREAS PRIOR TO PLACING FILL. ANY QUESTIONABLE OR UNSUITABLE SOIL CONDITIONS SHALL BE BROUGHT TO THE ATTEN11ON OF THE ENGINEER. 2. AFTER STRIPPING TOPSOIL AND PRIOR TO PLACING FILL, IT IS RECOMMENDED THAT ALL BUILDING, PARKING AND DRIVEWAY AREAS BE ROLLED WITH A VIBRATORY ROLLER TO CONSOLIDATE LOOSE SOILS IN THE UPPER SUBGRADE. COMPACTION TEST RESULTS OF AT LEAST 95 PERCENT OF THE STANDARD PROCTOR MAXIMUM DRY DENSITY WILL BE REQUIRED PRIOR TO ENGINEER'S APPROVAL, FOR FILL PLACEMEN 3. ALL FILL SHALL BE COMPACTED TO AT LEAST 95% OF THE STANDARD PROCTOR MAXIMUM DRY DENSITY (ASTM D698). 4. GRADING CONTRACTOR SHALL SEED AND MULCH ALL DISTURBED AREAS IN ACCORDANCE WITH THE SPECIFICATONS WITHIN 30 DAYS COMPLE11ON OF GRADING WORK. UPON COMPLETION OF THE PROJECT, THE GENERAL CONTRACTOR SHALL INSTALL PERMANENT SEEDING AS OUTLINED IN THE SPECIFICATIONS. ALL DRAINAGE PIPES SHALL BE CLEANED BY THE GEN- ERAL CONTRACTOR TQ REMOVE ANY SEDIMENTS THAT HAVE ACCUMULATED. 5. ALL PLANTING AREAS SHALL BE BACKFILLED NTH TOPSOIL AND RAKED DOWN, REMOVING ALL CLODS AND ROOTS, AND LEFT READY FOR SEEDING AND PLANTING. LEGEN D EIP = EXISTING IRON PIPE ECM =EXISTING CONCRETE MONUMENT EB = ELECTRIC BOX PP =POWER POLE GW =GUY WIRE AL =AREA LIGHT SS = SANITARY SEWER MH = MANHOLE DI = DROP INLET RCP = REINFORCED CONCRETE PIPE CMP =CORRUGATED METAL PIPE CP = CONCRETE PAD CDP =CONCRETE DUMPSTER PAD SI = SIGN AC = AIR CONDITIONING UNIT FH =FIRE HYDRANT PIV = POST INDICATOR VALVE MW = MONITORING WELL V =VALVE WV = WATER VALVE GV =GATE VALVE CO =CLEAN OUT GM =GAS METER BLRDS = BOLLARDS ., ----- x-•-•--- CLF = CHAIN LINK FENCE LPT = LIQUID PROPANE TANK EX =EXISTING O = NO POINT SET - - - - - = STORM DRAINAGE LINE ® = NEW STORM DRAINAGE . X = SILT FENCE REVISED PER NCDENR COMMENTS - 3 10/1 /02 SIZE INCREASED FOR DET. POND-1 & PIPE LENGTHS CHANGED POND-1 SLJ 2 8/14/02 REVISED PER NCDENR COMMENTS - SLJ PONDS CHANGED &ADDED R.D.'S 1 8/7/02 ADDED TRUCK DOCK SECTION & SLJ REVISED CONCRETE SWALE DETAILS 0 7/19/02 ISSUE FOR CONSTRUCTION SLJ g 7/12/02 ISSUE FOR CLIENT REVIEW HGN A 5/14/02 ISSUE FOR REVIEW SLJ REV. N0. DATE REVISIONS BY •Engineering ■Architecture ■ Surveying wTechnology Box 7305, 324 S. Evans St, Greenville, NC 27834 252-758-3746, 252-830-3954 (Fax) PROJECT TITLE DEL LABORATORIES, INC. Rock Point Tw Pender Co., NC ., DRAWING TITLE General Grading, Drainage, Erosion & Sedimentation Control Plan SCALE DEPARTMENT 1" = 50' CIVIL DRAWN BY DATE SHEET No. SLJ 4/9/02 3 of 8 CHECKED DRAWING NO. . APPROVED PROJECT NO. 00 0019 2 2 _ + 115 X N In L m K11 I R 19 A 19 70 a I � � I I � � �� I -1 � 15 1 14 1 13 1 12 1 11 I I-- 10 1 9 1 8 1 7 1 - 6 �� 1 5 1 4 1 3 1 2 1 1 - I I . 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I */ I I .N` : ,, ,,!O, 00S . ;�$` / '%-z i I ,�p / / /I I ID/ I . 0 1 i � / / (3/ 1 ; / I I I I . � / 11 / / 4z, 1 1 ; I 7 I I � ,-.�� I I / I I I I I � DEL LABORATORIES . . / I I � I � '� 1 C4 41 1 1 &d!"�!!��---! ____�� U, _ - - ______9r , ....... - ......... - .. __ - " _- I i �_"i I -I,-.-,:- ` S aT - , " I I I -_ - ` I ` _,', , I � I I I . / I � , . / L / . I � I ; h I / f L . I . I . A 50 25 0 50 $ 1 . / f . I i 0 $� 1 , I IN ml� . I i 1 =50$-0 � � . I I I . I I . I I . I � L . I .1 � , . � . � . I I I I L I I 11 . . 11 . I I L I - I � L I ---j - L 14 1 1 -4 7 1 6 5 4 3 2 1 ; I I - I . I . - I THIS DRAWING IS THE PROPERTY OF THE P.A. ANY USE, REUSE, REPRODUCTION. DISPLAJOR SALE OF THIS DRAWING WITHOUT WRITTEN CONSENT OF B14E EAST GROUP, P.A. IS STRICTLY PROHIBITED, ( COPYRI THE EAST GROUP. P.A. 2002 5 . 15 i 1 13 1 12 1 i 10 9 1 8 i r GROUP- I I L . + . - : " L �ft X 2 In 11 21 i 1m G I = m �-= A SEAL , ­-��,;', 'O ,.',1,'1p.nr,_ �,_ �"_��J� 1 _:�6,_o,_ " 13 �_��, . �, _, I = SEAL I � , .. , �, ," - ""��' ,,,�,,,-�,�,,,� `-,,,:�Z�,,,�,O�,,, I 1,�,� if "'i i '­_. �.N ''. , .4 L. . , ,_ ,.,�L .� �� '.. �� .1 '' &L , , ,7,.. "I'll ", , L , . �",_"�, I , V , - . . � �, �'�, �`,, (,., , I L , 'L I . r" �. 1 1�-_ `P .1% r1_1 , .1 �, . . __, 1-1 1�1� - , 11 ,__., ��. o', �- - J, . I 11 ;!'1­1­1 - I ,, �,-,,' _', ,., .1, 11 . ;., ", - �,,:..,. .. 1, ", 1. ., , 11 ... �11 ': , .1 _. , 11. " `� I � . 11, � � I .. . f :. I , (, ;� e�., It L I ­r I ., (� � .1. , " 1, "', -1 k_1 � �, .1 11 " " . 1. '' I � C__ "', % , ,_,il r��` I R� .- 11 __ ,1 ­� ,-. ��, a, 1) �. , '.. �, 5 "s C� %) " " , ; � , j, __ �.", tp - - �,,� " "', ,�'j i� ,�� C I 1, .%.. ,�,� - - A", 1��, , I 1� , "I f , . k,' -Y �� -- ,�, � XPI " 1� ... . I L� I "& �­ �, I kN %,' -- , # 'I � �, . , # -L Go � .. . 1, w � , , % . �_ I "I : '. a , , I I - , kc .11, I ... "I �� I I . oocmo - S: I f, 1) NEW POST INDICATOR VALVE (PIV) LOCATIONS BY OTHERS. 2) GENERAL CONTRA ALL PROVIDE AND INSTALL PROPANE GAS PIPING TO EACH HVAC UNIT AND SHALL PROVIDE AND INSTALL A PLUG COCK SHUTOFF VAVLE AT THE UNIT. THE HVAC CONTRACTOR SHALL INSTALL A PROPERLY SIZED GAS PRESSURE L PIPING TO THE HVAC UNIT GAS CONNECTION. . 3) GAS CONTRACTOR TO PROVIDE 4-5 PSI CONNECTION IN BLDG. LEGENQ EIP = EXISTING IRON PIPE EB = ELECTRIC BOX PP = POWER POLE GW = GUY WIRE AL = AREA LIGHT SS = SANITARY SEWER MH = MANHOLE DI = DROP INLET RCP = REINFORCED CONCRETE PIPE E AL I SI = SIGN I AC = AIR CONDITIONING UNIT FH = FIRE HYDRANT PIV = POST INDICATOR VALVE MW = MONITORING WELL V = VALVE WV = WATER VALVE WL = WATER LINE BLRDS = BOLLARDS X- CLF = CHAIN LINK FENCE LPT = LIQUID PROPANE TANK EX = EXISTING FH ASSY = FIRE HYDRANT ASSEMBLY 0 = NO POINT SET --SS- - = EX. SANITARY SEWER LINE _SSONONssoo R LINE = = = = = = EX. STORM DRAINAGE LINE m m mm-im = NEW STORM DRAINAGE LINE --UG-- = EX. UN -Uc- = --UE-- = EX. UNDERGROUND ELECTRIC LINE -E- = OVERHEAD ELECTRIC LINE - -FOC- - = EX. UNDERGROUND FIBER OPTIC CABLE N­N-­­­­j �-- = NEW WATER LINE 11 . �. - , " . I I I � . . I . A ADDED PUMP STATION, 8" SS LINE 8/7/02 TO MH-1, ADDED 10- ROOF DRAIN SLJ I & 4" PVC ALCOHOL WASTE LINE 0 7/19/02 ISSUE FOR CONSTRUCTION SLJ 7/12/02 DATE I ISSUE FOR CLIENT REMEW REVISIONS I SLJ . BY REV. I NO. I TH �E EAST mEngineering mArchitecture a Surveying w Technology Box 7305, 324 S. Evans St., Greenville, NC 27834 252-758-3746, 252-830-3954 (Fox) . PROJECT TITLE DEL LABORATORIES, INC. Rocky Point TwP., Pender Co., NC DRAWING TITLE Utility Plan SCALE 1 of = 50' CIVIL DRAWNBY DATE SHEET No. SLJ 4/9/02 4 of 8 DRAWING N;. 0 APPROVED � I PROJECT NO. 20020019 C SEAL SEAL o' 0 c �O O 1 8/7/02 7/19/02 REVISED # OF DWGS. ON TITLEBLOCK ISSUE FOR CONSTRUCTION SLJ SLJ p B 7/12/02 ISSUE FOR CLIENT REVIEW HGN A 5/14/02 DATE ISSUE FOR REVIEW REVISIONS SLJ BY REV. N0. THE EAST GROUP, P.A. engineering uArchiteciure a Surveying w Technology Box 7305, 324 S. Evans St, Greenvale, NC 27834 252-758-3746, 252-830-3954 (Fox) PROJECT TITLE DEL LABORATORIES, INC. Rocky Point Tw ., Pender Co., NC DRAWING TITLE Grading, Drainage, Erosion & Sedimentation Control and Pavement Details SCALE' DEPARTMENT N. I�(.S. CIVIL DRAWN BY DATE SHEET No. SLJ 4/9/02 6 of 8 CHECKED DRAWING NO. C4N1 APPROVED PROJECT NO. 20020019 I 11 10 9 8 7 6 5 4SEAL 3 2 1 15 14 13 12 CA ®d! o P P I !0 I i 4" VULCAN MODEL #G8471 4' CLEAN OUT TO BE SET W/G8460 LID MARKED SEWER OPENINGS NOT TO FLUSH W/FINISH GRADE OR 4OPENINGS NOT TO " EXCEED 4" SQUARE 6" EAST JORDEN #1574Z EXCEED 4 SQUARE (TYP.) 0 f 1" TAPER 24" SQUARE �RLID MARKED SEWER (TYP.) CONC. PAD EQUAL 0 GRAB , FINISHED SUS FIN. GRADE 1" GRADE (PVMT.) - RECAST 4t \� \ \\ CONC. N W .P %\°.e c O 0 O r 4 x4 PRECAST / SLOPE SIDES AS + O 0 0 0 0 t CONC. BASIN W/ KNOCKOUT PANELS NECESSARY FOR z FINISHED SUBGRADE �' ALL OC4 SIDES KOUT PANELS ALL 4 SIDES / CONSTRUCTION 3000 PSI CONC. ENCASEMENT OUTSIDE OF PAVED SURFACES)\ ( SANITARY SEWER >K °D •"c `�� i•� CLEANOUT NECESSARY FORELAN UNDISTURBED SOIL NECESSARYCONSTRUCT #4 STEEL REBAR (GALV. E SIDES AS ELAN #4 STEEL REBAR (GALV. N OR ASPHALT COATED) I � \\ 22 1/2' BEND COMBINATION WYE OR ASPHALT COATED) TACKWELDED AT 4" O.C. N \ EACH END OF BOX a' a /� TACKWELDED AT 4 O.C. EACH EACH WAY LAID IN TOP EN - OF BASIN LAID IN TOP ATTACH SCREEN � TOP = 25.0 ATTACH SCREEN TOP - 24.0 W/ GALV. LAG �P \ , OF BASIN W GALV. LAG \ / &WEDGE ANC ( S , lj 12» \,�NG"(N » _ & WEDGE ANCHORS r ' OUTLET = 24.0 STUB OUT 12 § 5? �i. ? 3.75 x 0.66 3.75 x 0.66 ' ,x PAST WYE do PLUG -- n• OUTLET = 22.5 OPENING �} DURING TESTING oo OPENING '%. 45' MAX. 4" SCH. 40 PVC DWV SEWER 10` >!e �� 1 /2 OPENING GALV. INLET = 21.0 1 /2" OPENING GALV. ti . ', > ` R INLET = 22.0 ., 22 1/2' MIN. SERVICE PIPE AT 1X MIN.- g �; Y/ ME ALUMINUM EXPANDED \ GRADE. (ASTM D-2665, D 1785) ay UNDISTURBED SOIL OR ALUMINUM EXPANDED € • METAL SCREEN \/ � � •, BOTTOM = 18.50 � AL SCREEN f,• �, S TAPPING SADDLE AB ' q.D. OF g BOTTOM = 19.35 MAXIMUM SIDE " .�. � �: �. x.. . � ; INSTALL IN ACCORDANCE 12" PIPE 12" "'-" I.D. INLET � I.D. INLE WITH MANUFACTURER'S NOTE: CLEARANCE PIPE GROUT IN ' • • PIPE GROUT IN M 12" O.D. 12" MA)aMUM SIDE RECOMMENDATIONS. MIN. 6" SEWER SERVICE TRENCH PLACE INV. = 22.0 57 STONE BEDDING SHALL BE COMPACTED TO PLACE INV. = 21.0 �? UNDER WYE 95% STANDARD PROCTOR. (�°-_-CRUSHED sT ��U CRUSHED STONE _.LEVA-- --- _ I I .... DETENTION POND OUTLET STR CTURE POND--2 SANITARY SEWER FORCE MAIN TRENCH q. DETENTION POND OUTLET STRUCTURE POND 1 5 SANITARY SEWER SERVICE DETAIL 3 N.T.S. WATER PIPE ,TRENCH 2 N.T.S. C5 C5.T.s. C5 N.T.S. C5 N.T.S. C5 I L I L t -EL.= 6.0-AQ { BENCH AQUATIC r BENCH �• EL 24.0 EL 22.5 - TEMP. POOL --I ' EL. �_ 22.0 m 4 TEMP, POOL�I I EL 21.0 K " I PERM. POOL �'• K I , PERM, POOL I , I I --� BOTTOM EL 18.0 �-` EL. - 18.0 BOTTOM EL 17.0 EL 16.2 WETLAND SPECIES AS INDICATED 1 �- 1 1 I ' I I 1' WEl l AND SPECIES AS INDICATED IN SPECIFICATIONS SHALL BE IN SPECIFICATIONS SHALL BE PROVIDED AROUND ENTIRE PROVIDED AROUND ENTIRE PERIMETER OF POND ON AQUATIC PERIMETER OF POND ON AQUATIC POND--2 SECTION BENCHABEtWEEN ELEVATIONS �„ BENCH BETWEEN ELEVATIONS 6 POND 1 SECTION �p � (�5 N.T.S. � V 5 N.T.S. J i 40' EL = 26.0 40' EL. �26T) BENCH AQUATI AQUATIC-75> I BENCH BENCH 5' NCH 7� 3•r EL 24.0 �� I� � r EL 22.5 �I -'JETEMP. POOLN77 EL = 22.0 '� MP. POOL I� , _ i I TE EL = 21.0 ! EL 21.5 ORIFICE INV. ELEV g•1 EL = 20.5 ORIFICE INV. ELEV \ PERM. POOL H I" I _i s•l .y� ►.... sty PERM. POOL _ BOTTOM 0.20.O 24 GPP H BOTTOM EL. 19.2 ~� '»"� 17.0 36" CPP 4 � I I BOTTOM EL 1$.0 BOTTOM EL I 1 , III 1 i /7"\POND-1 SECTION /'9N"*NPOND-2 SECTION C5 N.T.S. i C5 N.T.S. I GjI 1 G 5'-0" I f I 6u - 10,-6# -- N 0 j 4„ 36p BASE DITCH oo i co�6u SS B STONES Al 10'-0" F CLASS ca FILTER FABRI� \ " Lifters ' 5 WA +IED STONE NOTE: 5 - O `"`�'�� CLASS BSTONE -� CONTRACTOR SHALL MAINTAI EXISTING SEWER r MIN. (1) GRADE RING REWD. 10'-0" j15 WASHED STONE ""'�»"� "" SERVICE. GC TO COORDINATE WITH ENGINEER IN NON -PAVED AREAS. GRADE B��S� 8"0 +� AND OWNER PRIOR TO ABANDONMENT OF EXISTING MANHOLE STEPS , MANHOLE RING & COVER 3 10/1 /02 REVISED VEGETATIVE FILTER DETAIL SLJ FILTER FABRIC `O SEWER SERVICE. 1 g 0. v, RINGS NOT REQ. D. IN PAVED I SIDE EL�,,,�EVATION AREAS UNLESS NEEDED TO I REVISED PER NCDENR COMMENTS -- OVA CUT EXISTING 8 SS &PLUG; MEET GRADE. SLJ ' RING & COVER 2 4 2 4 2 8/14/02 f 2 � MH I G CHANGED DETAILS 4, 5 & 11 ,c, o SECTit�t A -A / " a 1 8/7/02 REVISED DOGHOUSE MANHOLE SLJ 1/2 GROUT _ 6 WATER DETENTION POND - OVERFLOW DETAIL I n n E /'j'ON�STORM- I 0 7/19/02 ISSUE FOR CONSTRUCTION SLJ ' C5 N.T.S. FLOW CHANNEL BENCH SLOPE UP FROM CHANNEL 1 /2" PER FT. I I B 7/12/02 ISSUE FOR CLIENT REVIEW HGN ��-- 5'0 DOGHOUSE STYLE CONCRETE MANHOLE A 5/14/02 ISSUE FOR REVIEW SLJ MANH STEPS 4' I.D. I._._�. AT 16�OC REV. » S w "TM m" NEW 8" SS 24" 0 Cast Iron NO DATE REVISIONS BY NEW 4 PVC S 1, & Covers 30 _. M.._ ,_..� ,_ ; Brought ht To Grade ��0 9 Outlet Tee Punished & A _.._ _ Installed By Contracor ~ '� , r" __ �► JOINT SEALER By Contractor I FLEXIBLE RUBBER SLEEVED THE RIP RAP FLOW CHANNEL BENCH BOOT W/ SST STRAP �. 3 ENERGY ('•) FLEXIBLE RUBBER SLEEVE y: D EAST D SSIPATOR <. WETLANDS I i [3UILD-UP NEW BENCH_ W/ SST STRAP (TYP} a' .• if FLOW < u 4 4. .r. OUTLET SPREADER BOUNDARY I I�� AND FORM NEW CHANNELS a rn SAW -CUT & �Z INTO EXISTING SEWER PIPE. CONCRETE FILL 8 8"0 1 PIPE MECHANISM �y FLOW .�.. _--.- „ c., REMOVE TOP HALFI ,�; CHANNEL ,q •- 3 � � „GROUPP.A. � A OF EX. EXPOSED ! 36 A PIPE INSIDE MH ■Engineering ■Architecture■Surveying ■Technology SST CLAMP Sox 7305, 324 S. Evans St, Greenville, NC 27834 252-75$-3746, 252 830-3954 (Fax) VEGETAT IVE VE 00 a ©4, COMPACTED CRUSHED --- -- --- -- -- -� -- 7 0 N k FILTER AREA r w f- STONE, 1 DEPTH (TYP) » u PROJECT TITLE �, �� 1-1 /2 0 Butyl " 6 - 0 NC DOT NC D�?T © )41 �,� �„ Rubber Sealant PVC y.... 67" C CLASS B�STONE CLASS 8 STONE In Joint 61 36" \\� Tee j ' UNDISTURBED SUBGRADE .�- C INV 12.90 - Lifters N{ 4� DEL LABORATORIES, INC. INV 19.40 '_..� P. SEEM s 12 rr INV. 12.80 a �r INV. 19,30 4 cu N SCALE: "ENLARGED FROM SECTION FOR CLARITY" SCALE: NONE y •4 4 6�� VEGETATIVE FILTER VEGETATIVE FILTER Rock Point Tw ., Pender Co., NC \fir, II OUTLET INV. 19.57 1 1 I OUTLET INV. 13.0 I PIPE " DRAWING TITLE PIPE 1/2 OF A 24 PVC PIPE i,/2 OF A 24 PVC PIPE SFGTION 'A -A' {POND-1) SECTION 'A -A' (POND-2) B B 12 DOGHOUSE MANHOLE 13 2000 GALLON GREASE INTERCEPTER Utility Details 11 VEGETATIVE FILTER DETAIL C5 N.T.S. C5 N.T.S. C5 N.T.S. SCALE DEPARTMENT N.T.S. CIVIL R F_",j] EI r_ D DRAWN BY DATE SHEET No. SLJ 4/9/02 7 of 8 CHECKED DRAWING NO. DWQ A APPROVED :PROD A PROJECT NO. 20020019 THIS DRAWING IS THE PROPERTY OF THE ST GROUP, P.A. ANY USE, REUSE, REPRODUCTION, DISPLA OR SALE OF THIS DRAWING WITHOUT WRITTEN CONSENT OF rE EAST GROUP, P.A. IS STRICTLY PROHIBITED. COPYRI , THE EAST GROUP. P.A. 2002 2 15 14 13 12 11 10 9 8 7 6 5 4 3 1