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HomeMy WebLinkAboutSW8010314_HISTORICAL FILE_20010810STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 G� 031-� DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS ® HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE low 09 to YYYYMMDD North Carolina Department of Environment and Natural Resources Division of Water Qualih Wilmington Regional Office Michael F. Easlcy, Governor William G. Ross Jr., Sccrctar�, August 10, 2001 Mr. Robert G. Martin, President Carolina Eve Associates 2170 Midland Road Southern Pines. NC 28387 Subject: Permit No. SW8 010314 Modification Carolina Eye Associates High Density Stormwater Project New Hanover County Dear Mr. Martin: The Wilmington Regional Office received a complete Stormwater Management Permit Application for Carolina Eve Associates on August 6, 2001. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 010314 Modification dated August 10, 2001, for the construction of Carolina Eye Associates. This permit shall be effective from the date of issuance until August 10, 2011, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicator), 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 2761 1-7447. 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 Noelle Lutheran, or me at (910) 395-3900. Sincerely, Rick Shiver — l Water Quality Regional Supervisor RSS/nml: S:AWQS\STORMWAT\PERMIT\010314.AUG cc: John Tunstall, P.E. Tony Roberts, New Hanover County Inspections Beth E. Wetherill, New Hanover County Engineering Division of Coastal Management Noelle Lutheran Wilmington Regional Office Central Files P1 127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Emplover 50% recycled/10 % post -consumer paper State Stormwater Management Systems Permit No. SWS 010314 Modification 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 Mr. Robert G. Martin, President Carolina Eye Associates New Hanover County FOR THE construction, operation and maintenance of an infiltration basin in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater managem ent plans and specifi cations and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this Penn it. This permit shall be effective from the date of issuance until August 10, 2011 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS I. 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 34,937 square feet of impervious area. 3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. A permit modification must be submitted and approved pri or to the construction of additional built -upon area from outside of the approved drainage area. Project Name: Permit Number: Location: Applicant: Mailing Address: State Stormwater Management Systems Permit No. SW8 010314 Modification DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Carolina Eye Associates SW8 010314 Modification New Hanover County Mr. Robert G. Martin, President Carolina Eye Associates 2170 Midland Road Southern Pines, NC 28387 Application Date: August 6, 2001 Name of Receiving Stream/index #: Classification of Water Body: If Class SA, chloride sampling results: Basin Depth, feet: Seasonal High Water Table, FMSL: Bottom Elevation, FMSL: Top Elevation, FMSL: Drainage Area, acres: Total Impervious Surfaces, ft': Offsite Area entering Pond, ft': Required Storage Volume, ft': Provided Storage Volume, ft': Infiltration Rate, In/hr: Dravedown Time: Cape Fear / .lumpin Run / l 8-76-1-3 "C Sw" n/a 3 23.5 26.6 29.5 1.94 34,937 None, per Engineer 3,940 12,900 30" 02 Days 3 State Stormwater Management Systems Permit No. SWS 010314 Modification 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. 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 (ever), 6 months). b. Sediment removal. C. Mowing and revegetation of side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of catch basins and piping. 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. 5. 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 ofthis permit, the approved plans and specifications, and other supporting data. 6. 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. 7. 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. 8. A modification must be permitted prior to any construction. The following items will require a modification to the permit. The Director may determine that other revisions to the project should require a modification to the permit: a. Any revision to the approved plans, regardless of size. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area. C. 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 was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 9. 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. 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 pemitted amount, a modification to the permit must be submitted and approved prior to construction. 0 State Stornmater Mana_ement Systems Permit No. SWS 010314 Modification 11. The permittee shall submit final site layout and grading plans for any pennitted future areas shown on the approved plans, prior to construction. If the proposed BUA exceeds the pemitted amount; a modification to the permit must be submitted and approved prior to construction. 12. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale of any portion of the property. 13. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built -upon area. 14. The 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 pennnittee 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. 15. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days. 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. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all components of the permitted stormwater management facility. 6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. 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. Permit issued this the 1 Oth day of August, 2001. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION C A�A A-, � Gregory J. Thorpe, Ph.D., Acting Director Division of Water Quality By Authority of the Environmental Management Commission State Stormwater Manaeement Systems Permit No. SW8 0 103 14 Modification Carolina Eye Associates Stormwater Permit No. SW8 010314 Modification New Hanover County Designer's Certification 1, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, ect) for (Project Owner) hereby state that, to the best ofmy abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: SEAL Signature Registration Number Date A&K #00235 State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): Carolina Eye Associates 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Robert G. Martin / President 3. Mailing Address for person listed in item 2 above: 2170 Midland Road City: £ Telephone State: NC Zip: 28387 4. Project Name (subdivision; facility, or establishment name — should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Carolina Eye Associates 5. Location of Project (street address): east corner of 17th Street and Jumpin Run 6. Directions to project (from nearest major intersection): North on 17'h Street from intersection of Glen Meade & 17"' Street located at corner of 17'h & Jumpin Run. 7. Latitude: 341 12' 38" Longitude: 770 55' 28" of project 8. . Contact person who can answer questions about the project: Name: Harvey Hoopes . Telephone Number: (910) 692-5125 I1. PERMIT INFORMATION I. Specify whether project is (check one):.. New Renewal X Modification Form SWU-101 Version 3.99 Page 1 of 4 2. If this application is being submitted as the result of a ienewal or modification to an existing permit, list the Existing permit number SW8 010314 And its issue date (if known)'' July 23, 2001 3. Specify the type of project (check one): Low Density X High Density Redevelop General Permit _Other 4. Additional Project Requirements (check applicable blanks): CAMA Major X Sedimentation/Erosion Control r_ 404/401 Permit _ NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at , 1-877-623-6748. III. PROJECT INFORMATION 1 In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (one to two pages)'describing stormwater management for the project. Infiltration Basin 2. Stormwater runoff from this project drains to the Cape Fear River Basin 3. Total Project Area: 1.35 : - .4. Project Built. Upon Area: 41.24 5. How many drainage areas does the project have? 1 6. Complete the following information for each drainage area. 'If there aie more than two drainage areas in the project, attach an additional sheet with the information for each area provided -in the same format as below. "Basiflnfoemationr" r I' Draina eArea"1 .i. i • 'Drama eJAiea'2: ,"''' " Receiving Stream Name Jum in Run „ .. Receivin 'Stream Class C-SW Drainage Area " " 1.94 acres Existing Impervious * Area Proposed Impervious* Area 0.80 acres %Impervious* Area total 41.24 r vn-sae auuain s i 1,0VU si On -site Streets 19,100 sf On -site Parking I On -site Sidewalks), , .r ;; 4,447 sf Other on -site — Off -site -- Total: 34,937 sf Total: * Impervious area is defined as the built upon area inchuhnz but not, limited to, buildings, roads, parkinx areas sidewalks, gravel areas, etc. Form SWU-101 Version 3.99 Page 2 of 4 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the Existing permit number SW8 010314 And its issue date (if known) July 23, 2001 3. Specify the type of project (check one): Low Density X High Density Redevelop General Permit _Other 4. Additional Project Requirements (check applicable blanks): CAMA Major X Sedimentation/Erosion Control _ 404/401 Permit _ NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748. III. PROJECT INFORMATION 1 In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (one to two pages) describing stormwater management for the project. Infiltration Basin 2. Stormwater runoff from this project drains to the Cape Fear 3. Total Project Area: River Basin. 1.35 . 4. Project Built Upon Area: 41.24 % 5. How many drainage areas does the project have? 1 6. Complete the following information for each drainage area. If there Are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. _DBasininformatiod{ ea'2Aa Rec eiving Stream Name Jum in Run Receiving Stream Class C-SW Drainage Area 1.94 acres Existing Impervious * Area Proposed Impervious* Area 0.80 acres %I ervious* Area (total) 41.24 Im ervious* Surface Area ..i Draina a Area 1; Draina a Area'2 On -site Buildings 11,390 sf On -site Streets 19,100 sf On -site Parking t On -site Sidewalks 4,447 sf Other on -site ----- Off-site Total: 34,937 sf Total: * Impervious area it defined as the built upon area including, but not limited to, buildings, roads, parking areas sidewalks, gravel areas, etc. Form SWU-101 Version 3.99 Page 2 of 4 How was the off -site impervious area listed above derived? N/A IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS The following italicized deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to the sale of any lot, if lot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number as issued by the Division of Water Quality. 7he.se covenants may not be changed or deleted without the consent of the State. 2. No more than .square feel of any lot shall be covered by structures or impervious materials. Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the water surface ofswimming pools. 3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to construction. 5. All permitled runofffrom outparcels or future development shall be directed into the permitted stormwater control system. These connections to the storm water control system shall be performed in a manner that maintains the integrity and performance of the system as permitted By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Form SWU-102 Form SWU-103 Form SWU-104 Form SWU-105 Form SWU-106 Form SWU-107 Form SWU-108 Form SWU-109 Wet Detention Basin Supplement Infiltration Basin Supplement Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Underground Infiltration Trench Supplement Neuse River Basin Supplement Innovative Best Management Practice Supplement Form SWU-101 Version 3.99 Page 3 of 4 VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be submitted to the appropriate DWQ Regional Office. Please indicate that you have provided the following required information by initialing in the space provided next to each item. Initials • Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable supplement form(s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment / management • Two copies of plans and specifications, including: - Development / Project name - Engineer and firm - Legend ' North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property / project boundary - Location'map with named streets or NCSR numbers - Original contours, proposed contours, spot elevations, finished floor elevations - Wetlands delineated, or a note on plans that none exist - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated - Vegetated buffers (where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your., behalf, please complete this section. John S. Tunstall. P. E. Designated agent (individual or firm): Andrew & Kuske Consulting Engineers, Inc. Mailing Address City: Phone: 902 Market Street 343-9653 Vill. APPLICANT'S CERTIFICATION State:.. NC ,Zip: 28401 Fax: (910). 343-9604 1, (print or type name of person listed in General Information, item 2) Robert G. Martin Certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the.required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A NCAC Date: -3— (— 01 Form SWU-101 Version 3.99 Page 4 of 4 VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be submitted to the appropriate DWQ Regional Office. 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. Initials • Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable supplement form(s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment / management • Two copies of plans and specifications, including: - Development / Project name - Engineer and firm - Legend - North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property / project boundary - Location map with named streets or NCSR numbers - Original contours, proposed contours, spot elevations, finished floor elevations - Wetlands delineated, or a note on plans that none exist - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated - Vegetated buffers (where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf, please complete this section. John S. Tunstall. P. E. Designated agent (individual or firm): Andrew & Kuske Consulting Engineers Inc. Mailing Address: 902 Market Street City Wilmington State: NC Zip: 28401 Phone: (910) 343-9653 Fax: (910) 343-9604 VIII. APPLICANT'S CERTIFICATION 1, (print or type name of person listed in General Information, item 2) Robert G. Martin Certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A NCAC 114 1 nnn Date: Form SWU-101 Version 3.99 Page 4 of 4 Andrew & Kuske CONSULTING ENGINEERS, INC. 902 Market St. • Wilmington, North Carolina 28401-4733 • Telephone 9 John R. Andrew, P.E. J. A. Kuske, P.E. J. Phillip Norris, P.E. com i � `G August 6, 2001 �\ \ � I Ao Mr. Rick Shriver NC DENR to 1 Division of Water Quality 127 Cardinal Drive Extension �-�t �1 vQ Wilmington, INC 28405-3845 RE/ CEI 0'�T ED Re: Carolina Eye 'L Stormwater Permit Modification AuG 0 6 2001 SW8 010314 DWQ A&K No. 00235 PROJ # Dear Mr. Shriver: Please find attached the revised plans, calculations, revised application form SWU-101 (pages 1 and 2), Infiltration Basin Supplement form SWU-103, revised narrative and a $420.00 check for the modification fee for the above referenced project. Due to NCDCT denying the stormwater outfall down 171h Street, the site has been redesigned with an infiltration basin. Vincent Lewis visited the site in 8/3/01 and approved the site for an infiltration basin design. The project was originally permitted under SW8 010314 on July 23, 2001. Please review this information for approval and contact us with any questions or comments you may have. Thank you for your assistance on this project. Sincerely, ANDREW & KUSKE CONSULTING ENGINEERS, INC. Z A . 6y� John S. Tunstall, P. E. JST/cif Enclosures EROSION CONTROL / STORMWATER SYSTEM NARRATIVE CAROLINA EYE ASSOCIATES WILMINGTON, NORTH CAROLINA For MTMM Associates 2170 Midland Road Southern Pines, NC 28387 C:A CAR, SSrn:'`$ SEAL ' l!! 19851 �uTO"r. March, 2001 Prepared by: ANDREW & KUSKE CONSULTING ENGINEERS, INC. 902 Market Street Wilmington, North Carolina 28401 (910) 343-9653 (910) 343-9604 — Fax www.andrewandkuske.com NARRATIVE DESCRIPTION The project site is a 1.35 acre tract located on the corner of 17`h Street and Jumpin Run Drive in Wilmington, NC. The site consists of moderately wooded/sandy soils and grades ranging from 1% to 10%. Approximately 1.35 acres will be graded to allow construction of a new office building with paved parking and paved access. The runoff from the site is estimated using the rational method 10 year design storm and rainfall data for the area. Construction is scheduled to begin as soon as all permits and approvals are obtained. The project consists of a10,000 sf office building with associated parking facility. Approximately 1.35 acres will be disturbed and 0.80 acres will be covered by impervious surfaces. EROSION CONTROL MEASURES The attached plans and specifications give the requirements for erosion control measures. Silt fencing will be provided where stormwater would be expected to sheet flow from disturbed areas directly to adjacent property. Gravel check dams will not be provided unless the Contractor has to temporarily discharge into an open ditch instead of the proposed storm drain outfall. A gravel construction entrance will be constructed at the entrance off 171h Street. Maintenance will be provided by the grading contractor and developer. 2 STORMWATER MANAGEMENT MEASURES: The project site is located in New Hanover County. Land disturbing on the site will exceed one acre which requires the site to comply with the City and State Regulations. The stormwater runoff from the development will be directed to the on site stormwater infiltration basin. The infiltration basin is a natural area on site and according to the infiltration test by SoilTech the sands have an infiltration rate of 30" per hour. The infiltration basin is located at the northwest portion of the site. The basin is designed in accordance with State guidelines and will store and infiltrate the 100 year storm event. The proposed infiltration basin will be cleared of all underbrush and the existing large trees will remain. The basin will be supplemented with bio-retention type plants in accordance with the State's BMP for bio-retention areas.. CONSTRUCTION SEQUENCE The Contractor will install the gravel construction entrance and silt fence prior to beginning any clearing and grading operations. Additional silt fence will be installed when and if conditions warrant during construction. During construction, the contractor shall clean low areas of any sediment or debris. Disturbed areas will be landscaped or seeded upon completion. c MAINTENANCE PLAN 1. All erosion and sediment control practices will be checked for stability and operation following every runoff -producing rainfall but in no case less than once every week. Any needed repairs will be made immediately to maintain all practices as designed. 2. Sediment will be removed from the gravel inlet protection device when storage capacity has been approximately 50% filled. Gravel will be cleaned or replaced when the sediment pool no longer drains properly. 3. Sediment will be removed from behind the sediment fence when it becomes about 0.5 ft deep at the fence. The sediment fence will be repaired as necessary to maintain a barrier. 4. Check ditches, swales, and other seeded areas for erosion and sedimentation after runoff producing rains. All seeded areas will be fertilized, reseeded as necessary and mulched according to specifications in the vegetative plan to maintain a vigorous, dense vegetative cover. Sediment producing areas should be treated immediately. 5. Inspect gravel construction roads, entrances, and parking areas periodically for sediment build-up on surface. Topdress with new gravel as needed. E Date Design Andrew and Kuske Sheet 902 Market St. CONSULTING ENGINEERS, INC. Wilmington, IN . 28401 Of Check Job For Job No. 61.4" CAM �I Y�-r Qsscc.,, �I2MInl47tjZ_ CALC-uLATwc, SEAL ` 19851 %I0 I ,41e� # 002-35 Date I Design Andrew and Kuske Sheet 902 Market St. CONSULTING ENGINEERS, INC. Wilmington, N.C. 29401 / Of Check Job �JF/L,O%/Q/J Sy�5,7y For���L�N�Y� Job No. ir,'� nlG k-)l NDT iC�UJ �Tt �cJ --rl-- fr-!G/r�roG�y 7770/n/ Sy6�Ej� !2%/tom p� Ll 7C0/0- 7f>✓� S/T� /N rCCCD�j�i✓C 10/V6I/v WILL ��`h2SONt�L f�/Gf/ GcJ�'f�r� 7✓dLf� �7,i✓C G✓/L� ��� �£�d)GN�t� /� C�NT/O/sv �-�✓�i�r7�or,E TE /i//v /0/�d !/� ��}/,C/v,(��irt7�a/�1/ GDG'�Ttz'b �✓� E-c 5Ti v 72 Vz T. 77co/j ins /NFi LT,L,dT7�N f/,�/G GcJiGL ,P�/ IA/ iu L1 Nn �� S`/�l�irr�.� �Jy /F4--,4/NTLj / AA-J �GGo2pp � !may NG N/L i3/o /C!�F72 /A/770A.) 6y2Tlt5rYl. �19p,f�. T-Nr— //JF/� aT.an/ f-�A��n/ IX)iu Awc> I F-14.Tim'A Tp- 7-H;5-E /o0y2 iilir- 8131011 AND -02 A6J /N)C:-/L7'2A710N �ni5ir� GtF irE �GoPt�`nf— ouS t c? �OQG. 7— /oT�C�oCvr�j �cfTli �G T/�/5 Z-�7_ WIL)- 007 HAVE-:: AtJ 6uTr�,sLL-, 6J, �O �J� 425(0✓T%cc pjCpviWL-'I tfZ) l Z 90D Fri e5)�' I 1�/zT fly �1- /G 72�-'y I Date I Design I Andrew and Kuske Sheet CONSULTING ENGINEERS, INC. 902 Market St. Wilmington, N.C. 28401 of Check IJob For(: r N� ��i✓ Job No. i �bTTo� r o 1.vT/ -7-1 oToti-77) o` o. 0007fr/mac , oe D, 04/7 f'�TiNG ZCo, 6 F3077rt,,,� '�� ' 7 Fr v -r- -;;7 AXi£/� )5G�I/ /l/�s� � rc�y �l ��; f/!r ' — Tom OF G ✓raj fl rV�C��✓T ?b iN fi LT2rG 77Z) n� /� AlONIo �/cr�nGi.✓ ,��✓ �2 /5 GCE ✓. 3 0, o /NTD `/um P N 2uiv �j y2 Tip 7 , Data for CAROL INA EVE ASSOC. Icyc-s mm Pane_ 7 FVPP TIT ?A_urniR RAINFALL= 7.00 IN Preparers by ANDREW R KUSKE CONSULTING ENGINEERS 25 .itil nl H.vdroCAD 5_01 nnn479 _(c)_1985-1998 Aool.ied Microcomputer Svstems WATERSHED ROUTING ____________________________________________________ oOZe',')5 r + I n (�j LJ SUBCATCHHENT REACH /u\ POND I I LINK nata fnr rARniTNA FYF A$$nr, Panp R TYPE TTT 2d-14nlIP PA TNFAI 1 = 7 _ nn TN Prpnarad by ANnPFW R imw rnNClll TTN, FN(_TNFFR$ ?F .hil nl HvrirnrAn ;,of nnnd7Q (rl 1QRF-TQQR Annlipri Mirrnrmmniitpr Cv�tpmc wRrATr"MFNT 1 rAPnlTNA FVF PFAV= 7.24 rF$ !d 12,n7 HRC, vniIIMF= 37 AF ArPFC rN .25 98 dd QR Tn QR an 45 is an 1,QA F5 RTPFrT FNTPY RIITI nTN, A.CPHA,I T rnNr, WAIT( r,RFFN nFFCTTF Nn.TH T>RAT NAr.F CrC TP-?n NFTHnn TVPF T T T ?d-HnIIP RAINFALL- 7_00 TN $PA,N= 11-15 HPC rit=.A2 HPC n nata fnr r4anITRA FVF A$CnC_ pan❑_ q TYPE ITT 24-14nIIR RATNFAII= 7-nn IN Prpnarpri h_v ANRPFW R V11W rnMll TTNr, FNFTNFFPS 9; ,lnl nl Hyrirnran 5_n1 nnnd7q _(rl IgRF-1QQR Annlipri Mirrnrnmmiter Svctemc pnNT) T TNFTI TRATTQN RASTN nin = 7.2d cps 2 i2_n7 HPC VnII-IMF= _37 AF nnt"t= 2_RQ (.PC (d 12.19 HRC_ vnIIIMF= 35 AF FI FVATTQN APFA TNf :CTnR fIIM_CTnR (FT) (SF) (CF1 (rFl �27.0 285n n n 2g,n 7nnn 4Q25 4g95 29.0 895n 7g75 lggnn A.TTFN= FnO/ IA,= I 5 - 1 MTN CTnR-TNn M.FTHnn PFAK STnPArF = dgRS rF PFAK FIFVA. TION= 2R_n FT FI nnn FI EV,ATION= 29_0 FT START FI FV,ATInN= 27_0 FT SPAN= 11-15 HRS. dt=_02 HRS Tdet= 27.7 MIN 1.35 AF) ROUTE INVERT OUTLET DEVICES 1 P 27nr EXFILTRATION - V= .0417 FPM over (SURFACE .AREA. - 2850 SF) n.t., r..w rnnni Tun cvc nccnr rfnr TTT zn unlin nnrurnl i _ o nn ru �yrr A ....... �,,....1 t. ,, nnlnn r6: C VIIQVC rAM Cl II TT slr CMA Tnlr rnP Irinrr.^.curn nnliTTnlr <f7UUI,H ILt11`ir IVI ¢T!prnTruoruT T I .I KC HI_.t1 rnn(TI TkIn rVr / Y l 1141 I •I �I I 114 Y NAM ? = TyrTI TrnTTnni opcTNl > DnNn 1 Data fcr CAROLINA EYE ASSOC. TYPE III 24-HOUR RAINFALL= 8.00 IN Precared by ANDREW 5 KUSKE CONSULTING ENGINEERS vdroCAD 5.01 000479 f_\ 198E-1998 A fill d Mi Uv 1 Vv _, iy hU; Ce" Systems SURC TCHMENT 1 CAROLINA EYE JUUy/Y 1 y PEAK_ 9.14 CFS @ 12 Ern MRS. VOLUME- nc AF ACRES CN .26 98 BUILDING .44 98 ASPHALT .0 98 CONC. WALK .40 45 GREEN .74 40 OFFSTTE NORTH 1.94 55 Pare 5 Au 01 SCS TR-20 METHOD TYPE III 24-HOUR RAINFALL= 8.00 IN SPAN= 11-15 MRS.. dt=.02 Mnc Method Comment Tr Kin) DIRECT ENTRY DRAINAGE AREA. 5.0 Data for CAROLINA EYE ASSOC. Page ; TYPE III 24-HOUR RAINFALL= 8.00 IN Preoared by ANDREW & KUSKE CONSULTING ENGINEERS 6 Aua 01 HydroCAO 5.01 000479 (c) 1986-1998 Aoolied Micrncamout.er Svstems POND 1 INFTI_TRATTON BASIN Qin = 9.14 CFS @ 12.07 HRS, VOLUME= .46 AF Qaut= 3.i8 CFS @ 12.36 HRS. VOLUME= .44 AF. ATTEN= 65%. LAG= 17.8 MTN ELEVATION AREA INC.STOR CUM.STOR STOR-IND METHOD (FT) (SF) (CF1 (CF) PEAK STORAGE = 6681 CF 27.0 2850 0 0 PEAK ELEVATION= 28.2 FT 28.0 7000 4925 4925 FLOOD ELEVATION= 29.0 FT 29.0 8950 7975 12900 START ELEVATION= 27.0 FT SPAN= 11 15 HRS, dt=,02 HRS Tdet= 29.4 MIN (.44 AF) ROUTE INVERT OUTLET DEVICES 1 P 27.0' EXFILTRATION V= .0417 FPM over (SURFACE AREA - 2850 SF), Data for CAROL INA EYE ASSOC. ANvSibmv.-t Pane 4 TYPE M 24—HOUR RAINFALL= 9.00 IN Preoared by ANDRFW R KL-L$KF CONSULTING ENGINEERS 95 jul 01 NvdroCAD 5_01 000479 (r1 198E-1998 Aoolied Mirroromouter Systems WATERSHED ROUTING, ___________________ ________(z7a)5 � � 5ucs�H L LhnLN L v $NBCATCNMFNT 1 KLHLh = (CAROL INA EYE POND 1 = INFILTRATION BASIN 1 /N ram, / \ rUNU 1 L LINK -> POND 1 Data for CARO iNA EYE ASSOC. TYPE 1i1 24-HOUR RAINFALk Q_QQ iN Prepared by ANDREW A KISKE CONSULTING ENGINEERS HyrlrofA[1 5.01 000479 Ir) 1986-1998 Annlied Mirrornmouter Systems SURCATfHMEMT 1 CARO INA EYE PEAK= 11.10 CFS @ 12.07 HRS. ACRES CN ,26 QR BUILDING .44 QR ASPHALT _ 1 Q QA CONC. WALK 40 45 GREEN .74 40 OFFSITE NORTH 1_94 65 VOI TIME= 56 AF Pane 5 75 lul 01 SCS TR-20 METHOD TYPE lil 24-HOUR RAiNFAI 1 = 9.00 IN SPAN= 11_15 HRS, dt=.02 HRS Method Comment Tr /min) DIRECT ENTRY DRAiNAGE AREA 5.0 nata fnr CARQITNA FYF Assoc TYPE ITT 94AMIR RATNFAI I= Q (In TN Pronarart by ANnRFW R. KII$KF CnNQII TTNf_, FNC_,TNFFRC HvrlrnCAn F.n1 nnng7q Irl 1QRFi-1gQR Annliori Mirrnrmmn{Itor Cvct Amc Pana F �5 .1i.11 nt PnNn 1 TNFTI TRATTQN RAUN nin - 11 In CFC 2 19 n7 HRS. VnIIIMF= 5F AF nnllt= i ;i CFC (d 19,ZQ FIR$, VnI IIMF= 5j .AF_ A,TTFN= Aft I_Ar= 1Q,5 MiN FI FVATTnN ARFA INC_STnR MIM,$TnR CTnR-TNn MFTFInn (FTI ($Fl 1rF) /CFI PFAX. CTQRAf_,F - R577 CF 97_n 9g5n n n PFAV FIFVATTnN- 9A.5 FT ?g_n 70nn 4WD 4Q?5 Finnn FI FVATTnN- ?Q.n FT 2Q.n RQSn 7Q75 12gnn CTAR FIFVA. TTnN= 97.n FT CPAN= 11-15 HRC_. fit_ n9 HRC Tdat= I R MTN ! 51 A.P.l Rn_IITF_ TNVFRT MITI FT nFVTCF4 1 P 97 n' FYFTITRATTnN- ---- V= n417 FPM nvor (CIIRFACF ARFA - 9R5n OF nata fnr rARQI TNA FV,F ASSOC_ Pane I )p0#— '3ibRM TYPE III 24-ROUR RATNFALI=TT_nn IN. Pranarad by ANIIPFW R wirw,F rwn 111 TINE FNr_,TNFFPS 95 ,III] n7 HvdrnrAn F.nl nnn47o !r) 1QRF-1QQR Annliad Mirrnrmmnirfar Svctamc EOZ35 WATFPCHFn PnIITTNr_, r— ( )5UbLHICHMLNI I I NLAUH u SIIRr.ATr11MFNT T = rARnl TNA FVF PTINn T = TNFTI TRATMN RASTN A rU / \ YUNU I I LINK PnNn 1 Data for CAROLINA F_YF ASSOC TYPE !!! 24-H UR RAINFAL L_=11 @O IN Prepared by ANORFW R KUSKF CONSULTING ENGINEERS HydrnCAD 5.01 000479 /r) 1985_199R Annlied Mirrorommrter Systems SLLRfATC00T 1 CAROL TNA EYE PEAK= 15.13 CFS @ 12.06 HRS, VOLUME_ .75 AF ACRES CN .25 QR BUILDING_. _Ad QA ASPHALT 10 O QA CONC. WALK .40 45 GREEN _74 dQ OFFSITE NORTH 1_QA 55 Pan? 2 25 Sul 01 SCS TR-20 METHOD TYPE III 24-HOUR RAINFALL=11.00 IN SPAN= 11_15 HRS, dt=.02 HRS Method Comment Tr /min) DIRECT ENTRY DRAINAGE AREA 5 n Data fnr CARnI TNA FVF ASSnr_ TVPF ITT 9A_MtQ- P_ATNFAI1=11 nn IN Pranarari by ANnPFW Y. KIISKF rnNSlll TTNr, FNnTNFFP$ HvrirnrAn 5.n1 nnnA7Q Irl 1QRF_1QQR Annliari Mirrnrmmniitor Svct Amc PQNn 1 TNFTI TPATTnN RAUN nin = 1; 11 Ul; M 19 nF NP$, VnIIIMF= 75 AP on, t= a.2n rF$ (d 12.a9 NPS, VQI tTMF= 7� A.F FI FVATTQN APFA, TNf._CTQP r[IM_CTQP IFTI ISF1 ((IF) fU) 27_0 ?RQn n o 9R_n 7nnn 4Q9F aQ2R qQ_n RQSn 7Q75 1gQnn Pano 1 9; .liil nl ATTFN= 79t. IAr.= 91 a MTN STQR_TNn MFTNnn PFAK $TQPArF . 19F53 rF PFAK FIFVATTnN= "_n FT FI nnn FI FVATTQN. 9Q_n FT STAPT FI_FVATTQN. 27_n FT SPAN= 11-I; HPC_. rit= n9 HP_C_ Triot= 17 T MTN / 79 A.F.l Pn_IITF_ T_NVF_PT nIITI FT nFVT_C_F_S_ 1 P 97 n' F_YFT_I_TPAT_TnN V= n417 FPM nvor /$11PFACF APFA_ _ 9RSn U l 2592 HOPE MILLS ROAD FAYETTEVILLE, NC 28306 ENGINEERING INC. 910-426-2323 Miller Building Corporation Post Office Box 2046 Wilmington, North Carolina 28402 Attention: Mr. Dick Hurst Reference: Infiltration Evaluation Carolina Eye Associates Wilmington, North Carolina Job No: 3528 - 01 Dear Mr. Hurst: JUL 2 0 2001 ANDREW AND KUSKE July 18, 2001 Soil Tech Engineering, Inc. has recently conducted an evaluation of the existing site conditions for the development of the Carolina Eye Associates building and parking areas located on 17th Street in Wilmington, North Carolina. We conducted an investigation of the subsurface soils at the designated storm water infiltration pond indicated on the attached site sketch on July 16, 2001. The purpose of our investigation was to determine the suitability of the in -place soils for the discharge of stormwater runoff. We investigated the subsurface soils to a depth of six feet below the existing ground surface. We also classed each subsurface strata encountered by depth and obtained representative soils samples of each strata at the designated locations. Selected soil samples were tested in our laboratory for grain size structure in accordance with the American Society for Testing and Materials (ASTM) procedures entitled ASTM D-422; 'Particle Size Analysis of Soils". Our sampling indicated that the subsurface soils at the test location to be moderately drainable upper stratas of Dark Gray Silty fine grained sands underlain by a strata of Tan Brown relatively free draining sands. l Infiltration Evaluation Carolina Eye Associates Wilmington, North Carolina Page Two We also conducted an evaluation of the subsurface infiltration at the designated location. The infiltration rate of the in -place soils were determined at a depth of approximately 42 inches below the existing ground surface at the location investigated. The infiltration rate was found to be 0.5 inches per minute, based on our analysis. We encountered groundwater at the location investigated at approximately 4.5 feet below the existing ground surface and in our opinion, the seasonal high groundwater condition should range from 4 to 4.5 feet below the existing ground surface. The infiltration rate presented above reflects the anticipated downward movement of infiltration water but does not reflect any lateral movement. We would anticipate that stormwater will collect in this pond after significant rainfall due to infiltration mounding because of a relatively high groundwater condition. Please find the results of our field and laboratory tests and a sketch indicating the location checked. If you have any questions after reviewing this report, please do not hesitate to contact us. Very truly yours, SOIL TECH ENGINEERING, INC. A.� Parks A. Downing, Jr. Manager w JapCs Pate, P.E. CC: Andrew - Kuske PADjr:JP/ad enclosure ;t%pRTH �••QOFE s. O C. PATS Infiltration Evaluation Carolina Eye Associates Wilmington, North Carolina Job No.: 3528 - 01 Date : July 19, 2001 Location De t(thh #1 0-3" 3" - 30" 30" - 42" 42" - 72" Organics Gray Silty Fine to Medium SAND Brown Silty ine to Medium SAND Tan Brown Silty Fine to Medium SAND Groundwater was encountered at 54" below the existing ground surface. Infiltration Rate : 0.5 inches per minute Test was conducted at 42 inches below the existing around surface. ReCention Pond 17th Street Jurpin Run Wive ® Denotes Icution of infiltration Cestin�. �— Building Site F, MC31"'t, Al.t. Carolina Eye Associates Wilmington, North Carolina Job No.: 3528 - 01 Grain Size Analysis Carolina Eye Associates Wilmington, North Carolina Job No.: 3528 - 01 Location : #1 #1 30" - 42" 42" - 72" Sieve Size # 10 100.0 99.8 # 40 85.7 90.4 # 80 39.5 39.0 # 200 15.8 15.7 Percent Moisture : 18.4% 21.4% Soil Description : Brown Tan Silty Brown Fine to Silty Medium Fine to SAND Medium SAND Andrew & Kuske CONSULTING ENGINEERS, INC. John R. Andrew, P.E. J. A. Kuske, P.E. J. Phillip Norris, P.E. 902 Market St. • Wilmington, North Carolina 28401-4733 • Telephone 910/343-9653 • Fax 910/343-9604 • wvvw.andrewandkuske.com May 14, 2001 Ms. Linda Lewis NCDENR/Div. of Environmental Mgmt. 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: Carolina Eye A&K No. 00235 Dear Ms. Lewis: MAY 1 5 2001 Please find the following responses to your comment letter of May 8, 2001: 1. The nearest major intersection is now shown on the vicinity map. 2. Please find a plan of the highlighting offsite drainage area. 3. The offsite drainage area listed in the calculations is shown on the attached plan. This area contains a previously permitted employee stone parking lot for Wilmington Orthopedic Group permitted under SW 8960807. We originally believed the Wilmington Orthopedic pervious parking lot was outside of the recently subdivided Carolina Eye Associates tract; however, by physically locating the parking lot, it appears that this parking lot slightly infringes into the recently subdivided Carolina Eye Associates site. The permitted stormwater devices for this parking lot is an infiltration system. Subsequently, we will now modify the permit of the pervious parking lot of Wilmington Orthopedic Group SW 8960807. The pervious employee parking lot and infiltration system will be moved back on the now Wilmington Orthopedic Group site. Any additional development of the Wilmington Orthopedic site will be required to be permitted. 4. The requested roof drainage note is shown on Sheet C1 note #2. 5. Wetland plants were specified in a note on the pond detail on Sheet C4. These plants were specified by a landscape architect. 6. Please find a clear copy of the calculations. Ms. Linda Lewis May 14, 2001 Page 2 7. The surface area at elevation 28.45 was generated by interpolating between the computer generated surface area of elevation 28 and elevation 29. The surface area at elevation 28.45 is 4,224 sf.(3.475 + 4224 (0.95) = 3,657 ft31.The storage has l 2 J been revised to 3,657 ft3 on the calculations and the permit application supplement form. 8. Built upon area has been revised to 34,937 sf on the permit application. 9. Building dimensions as well as the ponds normal pool dimensions are shown on Sheet C2. If you should have any further questions or comments on this project, please do not hesitate to contact our office. Sincerely, ANDREW & KUSKE CONSULTING ENGINEERS, INC. John S. Tunstall, P.E. JST/cjf Enclosure CC: David Honeycutt / Miller Building 00235-05-14-01 ftr Wth Carolina artment of Environment and Natural Resources Division ofWater Quality Wilmington Regional Office Michael F. Easley, Governor William G. Ross, Jr., Sceretary May 8, 2001 Mr. Robert G. Martin, President Carolina eve Associates 2170 Midland Road Southern Pines, NC 28387 Subject: REQUEST FOR ADDITIONAL INFORMATION Stormwater Project No. SW8 010314 Carolina eve Associates 17th Street Office New Hanover County Dear Mr. Martin: The Wilmington Regional Office received a Stormwater Management Permit Application for Carolina eye Associates 17th Street Office on March 14, 2001. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: 1 Please show the nearest MAJOR intersection (i.e., NC Highway, US Highway, Interstate, etc.) on the vicinity map. 2. Please provide a map of the offsite drainage area. 3. The application indicates that there is no offsite drainage, even though it is accounted for in the calculations. The rules require you to either account for offsite drainage at it's full build -out potential, or reroute it. Please revise. leercm+ e �4. Please add a note that all roof drains must be directed such that they will drain to the permitted SW control system, or show the roof drainage collection system on the plans. ✓ 5. Please specify the wetland plants to be planted on the vegetated shelf. A list can be found in Chapter 2 of the BMP document. There is no requirement through D WQ for a minimum number of plants, or spacing, however, .you can consult a landscape architect or the Extension Service for details on that. J6. The handwritten calculation sheet is faded and unreadable in places. Please provide a clear copy. ✓ 7. Flow did you determine that 3,752 It' of storage has been provided at elevation 28.45? What is the surface area in the pond at 28.45? 8. The built -upon area listed on the application totals 34,937, not 39.937. Please revise. 9. Please provide dimensions for the building and the permanent pool contour. 127 Cardinal Dr. Ext., WilminVoti, North Carolina 28405 Telephone 910-395-3900 FAX 9111-350-2004 An Equal Opportuniq, Affirmative Action Employer 50 % recycled/101% post -consumer paper Mr. Martin May 8, 2001 Stortnwater Project No. SW8 010314 Please note that this request for additional requested information should be received by this returned as incomplete. The return of project will application fee. information is in response to a preliminary review. The Office prior to .tune 8, 2001, or the application will be necessitate resubmittal of all required items, including the 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 than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 395-3900. Sincerely, L�LGI/ Gx��"y Linda Lewis Environmental Engineer RSS/arl: S:\WQS\STORMWAT\ADDINFO\010314.MAY cc: Linda Lewis John Tunstall. P.E.