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HomeMy WebLinkAboutSW8070935_Historical File_20081205 ., �OF W AT�9Q Michael F.Easley,Governor ' • �O G y William G.Ross Jr.,Secretary r North Carolina Department of Environment and Natural Resources Coleen H.Sullins Director Division of Water Quality December 5, 2008 Michael Greene MDI MGT INC 1381 Old Mill Circle Winston Salem, NC 27114 Subject: Stormwater Permit No. SW8 070935MOD Two- Eleven Midway High Density Subdivision Project Brunswick County Dear Mr. Greene: The Wilmington Regional Office received a complete Stormwater Management Permit Application for Two- Eleven Midway on December 5, 2008. 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 070935MOD, dated November 24, 2008, for the construction of the project, Two- Eleven Midway. This permit shall be effective from the date of issuance until April 17, 2018, and shall be subject to the conditions and limitations as snecified.therein. Please pal special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within sixty (60) 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 Chris Baker, or me at (910) 796-7215. Sin erely, George a Scott Stormwater Supervisor Division of Water Quality GS/csb: S:IWQSISTORMWATERIPERMIT1070935MOD.dec08 cc: Robin Austin, P.E., Withers and Ravenel Brunswick County Inspections Brunswick County Engineering real Off-one Central Files N,,°�," Carolina dvatura!!g North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone(910)796-7215 Customer Service Wilmington Regional Office Internet: www.ncwaterqualiiy.org Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer—50%Recycled110%Post Consumer Paper State Stormwater Management Systems Permit No. SW8 070935MOD STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY SUBDIVISION 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 Michael Greene, MD/MGT INC Two- Eleven Midway NC Highway 211, Brunswick County FOR THE construction, operation and maintenance of a wetlands detention system 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 April 17, 2018 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.7 on page 3 of this permit. The development is permitted for 9 outparcels, each limited to a maximum amount of built-upon area as indicated in Section 11.16 (f of this permit. 3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 4. The runoff from all built-upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 5. This pond must be operated with a 30' vegetated filter. 6. Each parcel or future development area within the subdivision whose ownership is not retained by the permittee; must submit a separate Offsite Stormwater Management Permit application package to the Division of Water Quality and receive a permit prior to any construction on the lot. Pana9nfa State Stormwater Management Systems Permit No. SW8 070935MOD 7. The following design elements have been permitted for this wetlands detention stormwater facility, and must be provided in the system at all times. a. Drainage Arp, acres: 39.47 Onsite, ft : 1,719,313 Offsite, ft2: None b. Total Impervious Surfaces, ft2: 1,216,200 Buildings, ft2: 86,800 Streets, ft2: 235,000 Parking, ft2: 120,000 Sidewalks ft2: 37,300 Other onsite ft2: 2,700 Outparcel #1, ft2: 58,610 Outparcel #2, ft2: 50,145 Outparcel #3, ft2: 64,330 Outparcel #4, ft2: 91,349 Outparcel #5, ft2: 62,123 Outparcel #6, ft2: 48,703 Outparcel #7, ft2: 50,397 Outparcel #8, ft2: 106,797 Outparcej#9, ft2: 80,000 BEMC, ft : 43,560 Future, ft2: 78,387 c. Deep Pool Depth @ PP, feet: 3 d. TSS removal efficiency: 85 % e. Design Storm: 1 f. Permanent Pool Elevation, FMSL-- 39.0 g. Permitted Surface Area @PP ft2: 126,325 h. Permitted Storage Volume, fts: 111,399 i. Storage Elevation, FMSL: 39.75 j. Controlling Weir: 18" Wide X 9" High k. Permanent Pool Volume, ft3: 110,156 I. Forebay Volume, ft3: 28,397 m. Receiving Stream / River Basin: River Swamp / Lumber n. Stream Index Number: 15-25-1-6 o. Classification of Water Body: "C; Sw" II. SCHEDULE OF COMPLIANCE 1. No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales) shown on the approved plans as part of the stormwater management system without submitting a revision to the permit and receiving approval from the Division. 2. The permittee is responsible for verifying that the proposed built-upon area for the entire lot does not exceed the maximum allowed by this permit. Once the lot transfer is complete, the built-upon area may not be revised without approval from the Division of Water Quality, and responsibility for meeting the built-upon area limit is transferred to the individual property owner. 3. If an Architectural Review Board or Committee is required to review plans for compliance with the BUA limit, the plans reviewed must include all proposed built-upon area. Any approvals given by the Board do not relieve the homeowner of the responsibility to maintain compliance with the permitted BUA limit. Page 3 of 9 State Stormwater Management Systems Permit No. SW8 070935MOD 4. 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. 5. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built-upon surface. 6. 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 the approved plans, regardless of size. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built-upon area. e. Further subdivision, acquisition, or sale of all or part 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. 7. The Director may determine that other revisions to the project should require a modification to the permit. 8. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 9. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 10. 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. 11. 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. 12. Permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. Page 4 of 9 State Stormwater Management Systems Permit No. SW8 070935MOD 13. The permittee shall at all times provide the operation and maintenance necessary to assure that all components of the permitted stormwater system function 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 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 structures, orifice, catch basins and piping. g. Access to all components of the system must be available at all times. 14. 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. 15. This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 16. Prior to the sale of any lot, the following deed restrictions must be recorded: a. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW8 070935MOD, as issued by the Division of Water Quality under NCAC 2H.1000. b. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the Stormwater Management Permit. C. These covenants are to run with the land and be binding on all persons and parties claiming under them. d. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. e. Alteration of the drainage as shown on the approved plans may not take place without the concurrence of the Division of Water Quality. Page 5 of 9 State Stormwater Management Systems Permit No. SW8 070935MOD f. The maximum built-upon area for the outparcel(s) or future development areas shown on the approved plan is as follows: Description of Area BUA (ft) Outparcel 1 581610 Outparcel 2 50,145 Outparcel 3 64,330 Outparcel 4 91,349 Outparcel 5 62,123 Outparcel 6 48,703 Outparcel 7 50,397 Outparcel 8 106,797 Outparcel 9 80,000 BEMC 43,560 This allotted amount includes any built-upon area constructed within the lot property boundaries, and that portion of the right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas; but does not include-raised, open wood decking, or the water surface of swimming pools. g. Lots within CAMA's Area of Environmental Concern may be subject to a reduction in their allowable built-upon area due to CAMA regulations. h. The runoff from all built-upon area within the outparcels or future development areas must be directed into the permitted stormwater control system. i. Built-upon area in excess of the permitted amount will require a permit modification. j. The connection from the outparcel's collection system into the stormwater control shall be made such that short-circuiting of the system does not occur. k. For those outparcels or future development areas whose ownership is not retained by the permittee, the new owner shall submit a separate Offsite Stormwater Management Permit application to the Division of Water Quality and receive a permit prior to any construction on the lot. 17. A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of recording the plat, and prior to selling lots. The recorded copy must contain all of the statements above, the signature of the Permittee, the deed book number and page, and the stamp/signature of the Register of Deeds. 18. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ personnel. The facility must be in compliance with all permit conditions. Any items not in compliance must be repaired or replaced to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 19. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. 20. Permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. Page 6of9 State Stormwater Management Systems Permit No. SW8 070935MOD III. GENERAL CONDITIONS 1. This permit is not transferable to any person or entity except after notice to and approval by the Director. In the event there is either a desire for the facilities to change ownership, or there is a name change of the Permittee, a completed "Name/Ownership Change Form" must be submitted to the Division of Water Quality, signed by the parties involved, along with the applicable documents as listed on page 2 of the form. The project must be in good standing with DWQ. The approval of this request will be considered on its merits and may or may not be approved. 2. The permittee is responsible for compliance with all of the terms and conditions of this permit until such time as the Director approves the transfer request. 3. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 4. The issuance of this permit does not preclude the Permittee from complying with .any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal), which have jurisdiction. 5.. In the event that the facilities fail to perform satisfactorily, including the creation of. nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and re-issuance or termination does not stay any permit condition. 7. Permittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the stormwater facilities during normal business hours. 8. The permittee shall notify the Division in writing of any name, ownership or mailing address changes within 30 days. 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. Permit issued this the 5th day of December, 2008 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION or Coleeff H. Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 070935MOD Page 7 of 9 State Stormwater Management Systems Permit No. SW8 070935MOD Two- Eleven Midway Page 1 of 2 Stormwater Permit No. SW8 070935MOD Brunswick Counly Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (period ically/weekly/fuii time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is a part of this Certification. Noted deviations from approved plans and specifications: SEAL Signature Registration Number Date Page 8 of 9 State Stormwater Management Systems Permit No. SW8 070935MOD Certification Requirements: Page 2 of 2 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built-upon area. 3. All the built-upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The outlet/bypass structure elevations are per the approved plan. 6. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet/bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as a vegetated shelf, a forebay, and the vegetated filter. 15. The required dimensions of the system are provided, per the approved plan. cc: NCDENR-DWQ Regional Office Brunswick County Building Inspections Page 9 of 9 Permit Number: y / (to be provided by DWQ) Drainage Area Number: Stormwater Wetland Operation and Maintenance Agreement 1 will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected,repaired or replaced immediately. These deficiencies can affect the integrity of structures,safety of the public, and the removal efficiency of the BMP. Important maintenance procedures: — Immediately after the stormwater wetland is established,the wetland plants will be watered twice weekly if needed until the plants become established (commonly six weeks). — No portion of the stormwater wetland will be fertilized after the first initial fertilization that is required to establish the wetland plants. — Stable groundcover will be maintained in the drainage area to reduce the sediment load to the wet detention basin. — Once a year,a dam safety expert will inspect the embankment. After the wet detention pond is established,I will inspect it once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential problem How I will remediate theproblem: The entire BMP Trash/debris is present. Remove the trash debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to wetland erosive gullies have formed. remove the gully,and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application Vegetation is too short or too Maintain vegetation at a height of long. approximately six inches. The inlet device: pipe or The pipe is clogged(if Unclog the pipe. Dispose of the swale applicable). sediment off-site. The pipe is cracked or Replace the pipe. otherwise damaged (if applicable). Erosion is occurring in the Regrade the swale if necessary to swale (if applicable). smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. Form SW401-Wetland O&M-Rev.3 Page 1 of 4 NOV 2 4 2008 BMP element: Potentialproblem: How I will remediate the problenr. The forebay Sediment has accumulated in Search for the source of the the forebay to a depth that sediment and remedy the problem if inhibits the forebay from possible. Remove the sediment and functioning well. dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to -prevent future erosion problems. Weeds are present. Remove the weeds,preferably by hand. If a pesticide is used,wipe it on the plants rather than spraying. The deep pool,shallow Algal growth covers over Consult a professional to remove water and shallow land 50% of the deep pool and and control the algal growth. areas shallow water areas. Cattails,phragmites or other Remove the plants by wiping them invasive plants cover 50% of with pesticide(do not spray)- the deep pool and shallow consult a professional. water areas. Shallow land remains flooded Unclog the outlet device more than 5 days after a immediately. storm event. Plants are dead,diseased or Determine the source of the dying. problem: soils,hydrology,disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Best professional practices Prune according to best professional show that pruning is needed practices. to maintain optimal plant health. Sediment has accumulated Search for the source of the and reduced the depth to 75% sediment and remedy the problem if of the original design depth possible. Remove the sediment and of the deep pools. dispose of it in a location where it will not cause impacts to streams or the BMP. Form SW401-Wetland O&M-Rev.3 Page 2 of 4 BMP element: Potentialproblem: How I will remediate theproblem: The embankment A tree has started to grow on Consult a dam safety specialist to the embankment. remove the tree. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. Evidence of muskrat or Use traps to remove muskrats and beaver activity is present. consult a professional to remove beavers. The micropool Sediment has accumulated Search for the source of the and reduced the depth to 75% sediment and remedy the problem if of the original design depth possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Plants are growing in the Remove the plants,preferably by micropool. hand. If a pesticide is used,wipe it on the plants rather than spraying. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 733-1786. Form SW401-Wetland O&M-Rev.3 Page 3 of 4 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the NOV 2 4 200$ performance of the 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. Project name: Two-Eleven Midway BMP drainage area number- 1 Print name: Michael Greene Title: Vice President Address: 1381 Old Mill Circle, Suite 200, Winston-Salem NC 27114 Phone: 336 775-3005 Signature: s :ii- -j rf/P dam®I M Date: 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. a Notary Public for the State of /r/C'. , County of � ,�� , do hereby certify that personally appeared before me this /00&, day of ADO , and acknowledge the due execution of the forgoing stormwater wetland maintenance requirements. Witness my hand and official seal, 1 SEAL My commission expires Form SW401-Wetland O&M-Rev.3 Page 4 of 4 r r DWQ USE ONLY Date Received Fee Paid Permit Number --trimA 16,v>-'):2 020 '13nLI) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORV This form may be photocopied for use as an original V 2 4 zn0$ I. GENERAL INFORMATION - 1. Applicants name(specify the name of the corporation,individual,etc.who owns the project): MDI Management,Inc. 2. Print Owner/Signing Official's name and title(person legally responsible for facility and compliance): Michael Greene-Vice President 3. Mailing Address for person listed in item 2 above: 1381 Old Mill Circle Suite 200 City: Winston-Salem State: NC Zip: 27114 Phone: ( 336 ) 775-3005 Fax: ( 336 ) 659-2434 Email: rhenderson@alexlee.com 4. Project Name (subdivision,facility,or establishment name-should be consistent with project name on plans, specifications,letters,operation and maintenance agreements,etc.): Two-Eleven Midway 5. Location of Project(street address): Located at the northwest corner of the intersection of Midway Road SE and NC Hwy 211 City: N/A County: Brunswick Zip: N/A 6. Directions to project(from nearest major intersection): Project site located at the northwest corner of the intersection of Midway Road SE and NC Hwy 211 7. Latitude:33°58'30"N Longitude:78°8'6" W of project 8. Contact person who can answer questions about the project: Name:-M.Robin Austin,P.E. Telephone Number: ( 919 ) 256-9277 Email: raustin@withersravenel.com II. PERMIT INFORMATION: 1. Specify whether project is(check one): ❑New ❑Renewal ®Modification Form SWU-101 Version 09.25.08 Page 1 of 4 2 4 Z008 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 070935 and its issue date(if known) Agril 17,2008 3. Specify the type of project(check one): []Low Density ®High Density ❑Redevelop ❑General Permit ❑Universal SUP ❑Other 4. Additional Project Requirements (check applicable blanks;information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ❑CAMA Major ®Sedimentation/Erosion Control ®404/401 Permit ❑NPDES Industrial Stormwater 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. Stoirnwater management to be handled via three interconnected extended detention wetlands which function as a single unit. A vegetated filter strip has been incorporated at the systems sole outlet 2. Stormwater runoff from this project drains to the Lumber River basin. 3. Total Property Area: 39.91 acres 4. Total Coastal Wetlands Area:N/A acres 5. Total Property Area(3) - Total Coastal Wetlands Area(4) = Total Project Area**: N/A acres 6. (Total Impervious Area/Total Project Area)X 100 = Project Built Upon Area(BUA): N/A % 7. How many drainage areas does the project have? 1 8. Complete the following information for each drainage area. If there are more than two drainage areas in the project,attach an additional sheet with the information for each area provided in the same format as below. For high density projects,com lete the table with one drainage area for each engineered stormwater device. Basin Information Drainage Area 1 Drainage Area 2 Receiving Stream Name River Swamp Stream Class&Index No. C;Sw 15-25-1-6 Total Drainage Area(sf) 1,719,313 On-site Drainage Area(sf) 1,719,313 Off-site Drainage Area(sf) 0 Existing Impervious*Area(sf) 19,166 Proposed Impervious*Area(sf) 1,137,813 Impervious*Area(total) 66.15 % Impervious*Surface Area Drainage Area 1 Drainage Area 2 On-site Buildings(sf) 86,800 On-site Streets (sf) 235,000 On-site Parking (sf) 120,000 Or.-site Sidewalks (sf) 37,300 Other on-site (sf) 2,700 .. Off-site (sf) 656,013 (See Attachment"A") Total (sf): 1,137,813 Form SWU-101 Version 09.25.08 Page 2 of 4 Impervious area is defined as the built upon area including, but not limited to, buildings,roads,parking areas, sidewalks,gravel areas,etc. "Total project area shall be calculated to exclude Coastal Wetlands from use when calculating the built upon area percentage calculation. This is the area used to calculate overall percent project built upon area(BUA). 9. How was the off-site impervious area listed above derived? No off-site area drains to proposed stormwater wetland. Projects in Union County: Contact the DWQ Central Office staff to check to see if you project is located within a Threatened&Endangered Species watershed that may be subject to more stringent stormwater requirements. IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following property restrictions and protective covenants are required to be recorded for all subdivisions,outparcels and future development prior to the sale of any lot. If lot sizes vary significantly,a table listing each lot number,size and the allowable built-upon area for each lot must be provided as an attachment. Forms can be downloaded from http://l12o.(,pr.state.nc.us/su/bm.p forms.htm-deed restrictions. Form DRPC-1 High Density Commercial Subdivisions Form DRPC-2 High Density Developments with Outparcels Form DRPC-3 High Density Residential Subdivisions Form DRPC-4 Low Density Commercial Subdivisions Form DRPC-5 Low Density Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below,you certify that the recorded proper-ti restrictions and protective covenants for this project shall include all the applicable items required in the above form,that the covenants will be binding on all parties and persons claiming under them,that they will run with the land,that the required covenants cannot be changed or deleted without concurrence from the NC DWQ 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 Permitting Unit at(919)807-6300 for the status and availability of these forms. Forms can be downloaded from http://h2o.enr.state.nc.us/su/bml2 forces htm. Form SW401-Low Density Low Density Supplement Form SW401-Curb Outlet System Curb Outlet System Supplement Form SW401-Off-Site System Off-Site System Supplement Form SW401-Wet Detention Basin Wet Detention Basin Supplement Form SW401-Infiltration Basin Infiltration Basin Supplement Form SW401-Infiltration Trench Underground Infiltration Trench Supplement Form SW401-Bioretention Cell Bioretention Cell Supplement Form SW401-Level Spreader Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Form SW401-Wetland Consiructed Wetland Supplement Form SW401-Grassed Swale Grassed Swale Supplement Form SW401-Sand Filter Sand Filter Supplement Form SW401-Permeable Pavement Permeable Pavement Supplement Form SW401-Cistern Cistern Supplement Form SWU-101 Version 09.25.08 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 Office. (Appropriate office may be found by locating project on the interactive online map at htln:l/h2o.enr.state.ne.Li.sisu�msi maps.htm) 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 • Original and one copy of the Deed Restrictions&Protective Covenants Form(if required as per Part IV above) • Original of the applicable Supplement Form(s)and O&M agreement(s)for each BMP • Permit application processing fee of$505(Express:$4,000 for HD,$2,000 for LD) payable to NCDENR ✓° • Calculations&detailed narrative description of stormwater treatment/management• Copy of any applicable soils report • Two copies of plans and specifications(sealed,signed&dated),including: �AtR -Development/Project name -Engineer and firm -Legend -North arrow -Scale -Revision number&date -Mean high water line -Dimensioned property/project boundary -Location map with named streets or NCSR numbers -Original contours,proposed contours,spot elevations,finished floor elevations -Details of roads,drainage features,collection systems,and stormwater control measures -Wetlands delineated,or a note on plans that none exist -Existing drainage(including off-site),drainage easements,pipe sizes,runoff calculations -Drainage areas delineated Vegetated buffers(where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf(such as additional information requests),please complete this section. (ex. designing engineer or firm) Designated agent(individual or firm): Withers&Ravenel Mailing Address: 1410 Commonwealth Drive,Suite 101 City: Wilmington State: NC Zip: 28403 Phone: ( 910 ) 256-9277 Fax: ( 910 ) 256-2584 Email: raustin@withersravenel.com VIII. APPLICANT'S CERTIFICATION I,(print or type name of person listed in General Information,item 2) Michael Greene 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 2H.1000. � a Signature: Af N Date: Form SWU-101 Version 09.25.08 Page 4 of 4 Two-Eleven Midway Proposed Project Data 12/31/2008 Out Parcel# Parcel Area Parcel Area Maximum (sf) (acre) BUA(sf) 1 73,262 1.68 58,610 2 62,681 1.44 50,145 3 80,412 1.85 64,330 4 114,186 2.62 91,349 5 77,654 1.78 62,123 6 60,879 1.40 48,703 7 62,996 1.45 50,397 8 133,496 3.06 106,797 9 100,000 2.30 80,000 BEMCI 106,044 2.43 43,560 871,610 656,013 20.011 1 15.06 75 Onsite Buildings 86,800 1.99 Onsite Streets 235,000 5.39 Onsite Parking 120,000 2.75 Onsite Sidewalks 37,300 0.86 Onsite Services(Pump Station) 2,700 0.06 Outparcels 656,013 15.06 Total Impervious 1,137,813 26.12 acres Future Impervious 78,387 1.80 acres Permit Numba6,0 �0. 0 )3�#L�A) (to be provided by DWG) AVA jr14 } r_ STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WETLAND SUPPLEMENT This form must be tilled out,printed and submitted. The Required Items Checklist(Part 111)must be printed,filled out and submitted along wlfh all tho required information. !. PROJECT INFORMATION Project name !� �'utrti-�ievetr f+ }way Contact name Nutter Freeman,P.E. Pitons mttller 1€ 4s9 34a Oats.. Novenftr 20,2008 Drainage.area number i IL DESMN t ORAIATION Site Characteristics Drainage area 1,719,313.00 fe Impervious area 121C.200,00 fe Percent impervious 70,7%% Design rainfall depth _1,00 ink, Peak Flow Calculations 1-yr,24-hr rainfall depth 3.60. in 1-yr,24-hr intensity 0.15 Injltr Pre-development 1-yr,24-hr runoff 426 felm Post-development 1-yr,24-hr runoff 41.65 ft3hw. Pre/Post 1-yr,24-hr peak control -0�1 Storage Volume: Non-SA Waters Minimum required volume 98,378,00 Volume provided(temporary pool volume) 111,399.00 ft3 OK Depth of temporary poollponding depth(Dpl.tj 9.00 in OK Drawdown time 4.30 days OK Diameter of orifice 18.00 in Drawdown orifice diameter may be insufficient.Please provide adequate supporting calculations. Coefficient of discharge(Co)used in orifice diameter 60iti IS J$rr i;9" L'g*' 0. (uness) s-OL6,T(tds calculation CA- Driving head(HJ used In the orifice diameter calculation 0.38 ff OK Storage Volume: SA Waters Parameters 1.5"runoff volume Pre-development 1-yr,24-hr runoff volume Post-development 1-yr,24-hr runoff volume {l? Minimum volume required fe Volume provided f __ 9 t Form SW401-Wetland-Rev.3 Parts I and 11.Project Design Summary,Page 1 of 3 NOV 2, 4. zoos (7013s� Permit Numb (to be provided by DINQ) Surface Areas of Wetland Zones Surface Area of Entire Wetland 126,325.00 fe Insufficient wetland surface area. ST�tT GAS Shallow Land 42,325.00 ft2 OK The shallow land percentage is: �0.34% ` Shallow Water _ 45,000.00 fe Insufficient shallow water area. The shallow water percentage is: 0.36% Deep Pool Forebay portion of deep pool(pretreatment) 14,000.00 fe OK The forebay surface area percentage is: . 0.11 % Non-forebay portion of deep pool 25,000.00.le Insufficient non-forebay deep pool area. The non-forebay deep pool surface area percentage is: 0.20% Total of wetland zone areas 126,325.00 It' OK Add or subtract the following area from the zones 0.00 ftz Topographic Zone Elevations Temporary Pool Shallow Land(top) 39.75 fmsl Permanent Pool Shallow Water(top) 39.00 fmsl . .. ... ...... Deep Pool(top) 39.00 fmsl Most shallow point of deep pool's bottom 36.00 fmsl Deepest point of deep pool's bottom 36.00 fmsl Design must meet one of the following two options: This design meets Option#1, Y (Y or N) Deep pool is 61inches below SLWT,If yes: _ SLWT(Seasonally Low Water Table) 37.00 fmsl OK This design meets Option#2, Has a clay liner If yes: Depth of topsoil above clay liner 0.00 in Insufficient topsoil depth 1J0 i.gv.;� Topographic Zone Depths Temporary Pool Shallow Land 9.00 In OK Permanent Pool Shallow Water 0.00 in Deep Pool(shallowest) 36.00 in OK ._.._...... ....... ..... . .. .. Deep Pool(deepest) 36.OQ in OK Planting Plan Are cattails included in the planting plan? N. (Y or N) OK Number of Plants in planting plan recommended: Herbaciotls(411nch diameter) 3192 Shrubs/small trees(1 gallon or larger) 2 . Trees(1.5"dbh) 632 Number of Plants in planting plan provided(several species of each plant type are recommended): Herbacious(411nch diameter) i!a OK Shrubs/small trees(1 gallon or larger) 641 Higher density is recommended, Trees(2.5"dbh) IO Higher density is recommended. Form SW401-Wetland-Rev 3 Parts I and II.Project Design Summary,Page 2 of 3 Permit Numb, t�%0-7 63 3-�ty-i (to be provided by DM) Additional Information Can the design volume be contained? Y... (Y or N) OK Does volume in excess of the design volume flow evenly Y (Y or N} OK distributed through a vegetated filter? What is the length of the vegetated filter? 30.00 ft Are calculations for supporting the design volume provided in the Y (Y or N) OK application? Is BNIP sized to handle all runoff from ultimate build-out? Y (Y or N) OK Is the BMP located in a recorded drainage easement with a Y (Y or N) UK recorded access easement to a public Right of Way(ROW)? 9 The length to width ratio is: 18.00:1 OK Approximate wetland length 900 00 ft Approximate wetland width 50.00 ft Approximate surface area using length and width provided 45,000.00 ft' This approx.surface area is within this number of square feet of the entire wetland surface area reported above: Will the wetland be stabilized within 14 days of construction? Y (Y or N) OK Form SW401-Wetland-Rev.3 Parts I and 11.Project Design Summary,Page 3 of 3 i . I N O V 2, 4 2008 1 Permit (to be provided by DINQ) I. Ft;IrQUEE?ITS CHECKLIST Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent,the agent may initial below. If a requirement has not been met,attach justification. Initials Pagel Plan Sheet No. 1. Plans(1"-50'or larger)of the entire site showing: Design at ultimate build-out, Off-site drainage(if applicable), Delineated drainage basins(include Rational C coefficient per basin), Wetland dimensions(and length to width ratio), -Pretreatment system, -Maintenance access, -Proposed drainage easement and public right of way(ROW), -Overflow device,and -Boundaries of drainage easement. 2. Plan details(1"=50'or larger)for the wetland showing: Wetland dimensions(and length to width ratio) Pretreatment system, Maintenance access, -Proposed drainage easement and public right of way(ROW), -Design ai ultimate build-out, -Off-site drainage(if applicable), -Overflow device,and Boundaries of drainage easement. 3. Section view of the wetland(1"=20'or larger)showing: Side slopes,3:1 or lower Wetland layers All wetlands: Shallow land depth,shallow water depth,deep pool depth Option 1,no clay liner: SLWT depth Option 2,clay liner: Depth of topsoil on top of liner,liner specifications 4. A detailed planting plan(1"=20'or larger)prepared by a qualified individual showing: -A variety of suitable species(not including cattails), -Sizes,spacing and locations of plantings, -Total quantity of each type of plant specified, -A planting detail, -The source nursery for the plants,and -Fertilizer and watering requirements to establish vegetation. _.... 5. A construction sequence that shows how the wetland will be protected from sediment until the entire drainage area is stabilized. 6. ftte supporting calculations(including drawdown calculations). 7. A copy of the signed and notarized operation and maintenance(O&M)agreement. B. A copy of the deed restrictions(if required). 9. A soils report that is based upon an actual field investigation,soil borings,and infiltration tests. County soil maps are not an acceptable source of soils information. SW401-Wetland-Rev.3 Part III,page 1 of 1 High Density Developments with Outparcels NOV 2 4 ZOOS Deed Restrictions & Protective Covenances In accordance with Title 15 NCAC 2H.1000, the Stormwater Management Regulations, deed restrictions and protective covenants are required for High Density Developments with Outparcels where outparcel lots will be subdivided from the main tract and sold. Deed restrictions and protective covenants are necessary to ensure that the development maintains a "built-upon" area consistent with the design criteria used to size the stormwater control facility. i, Michael Greene acknowiedge, affirm and agree by my signature below, that I will cause the following deed restrictions and covenants to be recorded prior to the sale of any outparcel or future development area: 1. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number as issued by the Division of Water Quality under NCAC 2H.1000. 2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the stormwater management permit. 3. These covenants are to run with the land and be binding on all persons and parties claiming under them. 4. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. 5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence of the Division of Water Quality, 6. The maximum allowable built-upon are for the outparcel(s) shown on the approved plans is as follows: Outparcel# BUA Outparcel# BUA Outparcel# BUA 1 58,610 sf 2 50,145 sf 3 64,330 sf 4 91,349 sf 5 62,123 sf 6 48,703 sf 7 50,397 sf 8 106,797 sf 9 80,000 sf BEMC 43,560 sf These allotted amounts include any built-upon area constructed within the property boundaries, and that portion of the right-of-way between the lot lines and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. 7. The runoff from all built-upon area within the outparcel or future development area must be directed into the permitted stormwater control system. 8. Built-upon area in excess of the permitted amount will require a permit modification. 9. The connection from the outparcel's collection system into the stormwater control shall be made such that short-circuiting of the system does not occur. 10. For those outparcels or future development areas whose ownership is not retained by the permittee, the new owner shall submit a separate offsite stormwater permit application to the Division of Water Quality and receive a permit prior to construction. '00, Signa -r ; ,- v 1�/'///7 �� ���, Date: //-40�aciF a NotaryPublic in the S f , County of , do hereby cartify that personally appeared before me this the 71W, day of 0,0?, a d acknowledge the due execution of the fgregoinq instrument. Witness my and and official seal, SEAL Signature My Commission expires Form DRPC-1 Rev. 1 Page 1 of 1 :K:K�(ltXiXX�I(l(l(l<l(Xt��KI(l<7K:K:K:KI<Xl<�l<l<l(1Kl<lil(�C:K:KXt�IKI(l<l(l<X:K��(7Kl<X�(l<l<l<l<�IK:KI<�C�7Kl<��Kl(l<l(1C:KXtI(l(l<l<�l(�CIC:KX��7Kl(l(Xtl(�C:KI<7K>K�l<l(�C:KIK l( TRANSACTION REPORT P, 01 DEC-05-2008 FRI 02:40 PM :K FOR: NCDENR 910 350 2004 SEND :K DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP �c :K DEC-05 02:38 PM 913366592434 1'53" 10 FAX TX OK 706 �c TOTAL : 1M 53S PAGES: 10 N Norttl Carolina pePartinent or Envirownent and Natural Resources (NCAENR) 'Wilmington Regional Office (910)796-721 S NLehael F.Easley,Governor William G.Ross Jr.,Secretary FAX COVER SHEET Date;---- ='��._2�----- ____#pases- --a.�.- -- -- -------------._.____�. __ . --�---------------------------------- To• -----%�-�—Cs--2� Fs�________ ______ _ 1;'rcm' rc�S Division:-----_-__--.___---- Fax: _F'ax: # 910-350�2004 1Z7 Cardiasl Drive Eat.Wilmington North Carolina 2$405-3845*Fz -910-35C-2fl04� lK1<�>I(isX<>KIKI<I<I(I<1KlK�>II<I<1<>K>K1(lKI<>K>K>KX�Y�KI<I(>K�(1(1<XX�1I(>KisY1(lKI<>KI<I(�(�>K�K>K1<XXX1<1K�1(�(It���I(>KI<1(�(>K�KI<IcX;>K1K1<1K�>K�c:K>KI(XtI<I<����l;I(��l; P. 01 TRANSACTION REPORT >Ic DEC-05-2008 FRI 02:38 PM �c >K FOR: NCDENR 910 350 2004 :K SEND DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP k >K DEC-05 02:36 PM 92562584 1'28" 10 FAX TX OK 705 �c TOTAL 1M 28S PAGES: 10 �K ������c>Ic>Ic�>Icxt>Ic�c�c>Ic>Ic>K>Icx����>Ic>Icxtxtx<>Ic>Ic>Ic>Ic>Ic>Ic�K�c���c�c�c���>Ic>Ic>Ic>Ic��x�>Ic>Ic��c�Xt>Ic�c>Ic�c�c>Icxt>I:��c>Ic>Ic��>Ic�x���c>Ic>Ic�c�KX�x�>K��>Ic�c>Ic�>Ic�c�>K��>Ic��c�c�K�K r D" North Carolina Department of Environment and Natural Resources(NCOEHR) - Wilmington Regional Office (910) 796-7215 NYichael F.Easley,Governor William G.Ross Jr.,Secretary FAX COVER SHtET v � Date:----- ---�-�.a.-----_00------------#pages---( Ci-_�------------- 'o:--� --1 -4__-----------. From: -_-.__mT__ 5Scr _Co:, —--- �9.n._`1c..w -------- - -- .2 � I�ivis2on:--�GIB __-------�...... Fax: Fax: # 910- 350-2004 Remarks: 127 Cardinal Drive Eat.Wilmington,North Carolina 28405-3845*Fit .910-350-2004.. Revised MA09 WITHER' & R"ENEL LETTER OFT NSMMAL ENGINEERS 1 PLANNERS I SURVEYORS i!}io Commonwealth Drive,Suite io1 DATE 12/0 /08 JoB No. O o806 8 ATTENTION WILMINGTON,NORTH CAROLINA,28403 Chris Baker PHONE# 6- O (910)256-9277 RE: FAX(g1o)256-256E1 Two-Eleven Midway Stormwater Permit No. SW8 0 0935 To: Chris Baker NC Division of Water Quality � 227 Cardinal Drive Extension Wilmington, NC 28405 WE ARE SENDING YOU E Attached ❑ Under separate cover via the following items: ❑Shop Drawings ❑ Prints ® Plans ❑Samples ❑Specifications ❑Copy of Letter ❑ Change order ❑ Diskette ❑ COPIES DATE NO. DESCRIPTION 2 12/4/08 - Sealed engineering plans THESE ARE TRANSMITTED as checked below: ❑ For approval ❑Approved as submitted ❑ Resubmit _ copies for approval ❑ For your use ❑Approved as noted ❑Submit copies for distribution ®As requested ❑ Returned for corrections ❑ Return corrected prints ❑ For review and comment ❑ ❑ FORBIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US REMARKS: COPYTO: Fle SIGNED: - Robin Austin If enclosures are not as noted,kindly notify us at once. WITHERS & RAVENEL TER OFTRAN5MMAL ENGINEERS I PLANNERS I SURVEYORS �- DATE 1 2 /08 JOB NO. O o806 1410 Commonwealth Drive,Suite ios ��; TTENTIo WILMINGTON,NORTH CAROLINA,28403 Chris Baker PHONE 6-7 0 (910)256-9277 RE: FAX(yzo)256-2584 Two-Eleven Midway Stormwater Permit No. SW8 o7o935 TO: Chris Baker NC Division of Water Quality I 127 Cardinal Drive Extension Wilmington, NC 284o5 WE ARE SENDING YOU ®Attached ❑ Underseparate covervia the following items: ❑Shop Drawings ❑ Prints ® Plans ❑Samples ❑ Specifications ❑ Copy of Letter ❑Change order ❑ Diskette ❑ COPIES DATE NO. DESCRIPTION 2 11/18/o8 03o8o678 Sets of plans for State Stormwater Permit (Sheets Cover, C-2.0, 4.0-4.2, 5.0, 10.0, and L-1.2-1.3) 2 Stormwater calculations 2 Stormwater Management Permit Application Form (SWU-1o1) 1 Wetland Supplement Form (SW-401) 1 Stormwater Wetland Operation and Maintenance Agreement 1 High Density Developments with Outparcels Deed Restrictions & Protective Covenances 1 Fee check in the amount of$2,000 THESE ARE TRANSMITTED as checked below: ® For approval ❑Approved as submitted ❑ Resubmit 2 copies for approval ❑ For your use ElApproved as noted ❑Submit copies for distribution ❑As requested ❑ Returned for corrections ❑ Return corrected prints ❑ For review and comment ❑ ❑ FOR BIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US REMARKS: For review and approval of a modification to the State Stormwater Permit No SW8 o7o9 5 Please contact us with any questions or comments. Thank you COPYTO: File SIGNS -Lisa J.�Thoas, E.I. /fenclosures are notasnoted,kindlynotifyusatonce. WITHERS c. RAVENEL ENGINEERS I PLANNERS I SURVEYORS November 24, 2008 North Carolina Division of Water Quality Wilmington Regional Office NOV 2, 4 7008 127 Cardinal Drive Extension Wilmington, NC 28405 Attn: Mr. Chris Baker Re: Two-Eleven Midway (SW8 070935) W&R Project No. 03080678 Dear Mr. Baker: This letter regarding the revised stormwater management permit for Two Eleven Midway is in response to the pre-application meeting held on November 20, 2008 at your office. At your request, we have provided revised plan sheets, supplement forms and additional calculations to document the stormwater management design at the site. The original permit for this project includes design information for 3 interconnected wetlands, which will act as one connected pond system. The original permit application was submitted by Kimley-Horn and Associates and the approved permit was dated April 17, 2008. The owner of the project has since hired Withers & Ravenel to produce plans for a revised site design; however no changes to the ponds were made. At this time, Withers & Ravenel has performed a check of the data prepared by the previous engineer and has found no major discrepancies with the information listed in the previously approved permit. For this reason, Withers & Ravenel has prepared updated documents using the same data listed in the previously approved permit. Due to modifications in the Coastal Stormwater Rules, which went into effect on October 1, 2008, this stormwater permit does not meet current design standards. Because there is no change to the pond design, we believe the owner is entitled to use the old design standards. The main difference is that this system was designed to control and treat runoff from 1" of rainfall, as it is a high density site and outside of 16 mile from SA waters. 111 MacKenan Drive I Cary,North Carolina 27511 I tel:919.469.3340 1 fax:919.467.6088 I www.withersravenel.com 7040 Wrightsville Avenue,Suite 101 1 Wilmington,North Carolina 28403 1 tel:910.256.9277 1 fax-910.256.2584 1027 Sabbath Home Road SW I Sunnly.NC 28462 1 tel:910-842-9392 1 fax:910.842.8019 Ws'II-HERS RAVENEL Mr. Chris Baker ENSINEERS I PLANNERS 1 SURVEYORS November 24, 2008 At your request, we have completed a Wetland Supplement Form for this project. The form, and the error messages within it, is based on the current stormwater regulations which require treatment of runoff from the first 1.5" of rainfall. Therefore, where errors are reported on the supplement form, we have added notes explaining why the pond is actually in compliance with the regulations which were in effect at the time of the original permit. At your request, we have included a copy of the soils report on site. Seasonal Water Surface Elevations were derived from borind S-8 and S-9. Although elevations are not listed for seasonal high or low water table elevations, a note in the text of the report reads "'groundwater depths were observed to range from 1.0 to 2.2 feet below the grade in the CPT borings...and our current groundwater observations are expected to be near or representative of the seasonal maximum water table." Based on existing topographic information and the soil boring map included in the report, we estimate that the seasonal high water table is at approximately 39.0 FMSL. Due to the presence of nearby wetlands in the areas adjacent to the ponds, we do not expect the seasonal low water table to exceed 3 feet of depth below the surface. Therefore we estimate that the seasonal low water table is at 37.0 FMSL. This should ensure that the wetlands remain saturated throughout the year. In addition, we have included calculations for drawdown time. Unlike a typical pond riser, this design uses a notched weir to control the water quality event. Extended drawdown is achieved by using a 1.5' wide, 0.75' tall weir. Drawdown time was calculated using the PondPack software program. Stage-storage information was entered based on proposed pond grading, and the weir variables were entered. The program computed a rating curve for the outlet structure and performed a time step elevation-discharge calculation to compute total drawdown time. Based on routing results, the pond will return to normal pool in 104.25 hours. We have also revised Sheet 10.0 to add critical elevations as requested. The sheet includes call outs on the section views, as well as a summary table for your convenience. The data is also represented on the revised supplement form. Finally, we have included a revised permit application documenting the proposed impervious surfaces on site. Per our discussion, we have included approximately 78,000 sf of"future impervious." This can be apportioned to any area of the site drainage to the wetlands at the owner's discretion; however changes to any aspect of the drainage area summary or deed restrictions may require a permit revision at a later date. Page 2 of 3 4"b'3THER8 &- 14AVENEL Mr. Chris Baker ENGINEERS I PLANNERS I SURVEYORS November 24, 2008 Should you have any questions tggardin thissubmittal please do not hesitate to call me. 9 Thank, you for taking 'the time to meet last week, 1. hope that we have answered all of your questions. Sincerely, WITHeFia &RAYENEL, INC. NOV 2 4 2008 H u nter C. Freeman, P.E. Page 3 cif 3 WITHERS RAVER EL -- NOV 2 4 zoos _.. Tv o*E.-boVe r Itdw �r rmwa tr Ma a em lint Pl l Brunsdareck 0 . IVor Ca r �o Prepared:Fir. :M01.Management i t r i38a Old 111 W Circle. Winston-Salem, NC 27103 Prepared By6 WITHERS & RAVENEL, INC 1 y t a' cKenan Drive nary, North Carolie�;a2.51`1 r �I (Mvember 2008' kt, - ..» ,. INTRODUCTION Two-Eleven Midway is a proposed high density commercial development consisting of 39.9i-acres; located in Brunswick County, North Carolina. The site is located within the Lumbar River Basin. The site as proposed is approximately 70.73%impervious. The purpose of this report is document the site's continued compliance with the State and:County of Brunswick's stormwater regulations. The original site plan and permit application was prepared by Kimly-Horn and Associates Inc. The DWQ.p,ermit number is SW8 07o935,and,was issued forthe site on April 17, 2008. Subsequent to stormwater approval the owner contracted with Withers&Ravenel to develop a new site plan..The site name has remained Two-Eleven Midway and the owner has remained MDI Management Inc. The original stormwater management plan forthe site proposes three interconnected extended detention wetlands that operateas.a:single.unit to meet applicable stormwater regulations. The wetland design will not be modified forthe new:site plan. Per the original stormwater permit the site area is 39.91 ac., overall impervious area is 27.92 ac., and the proposed drainage area to the wetlands is 39.47 ac. The new site plan has a site area of 39.91 ac., overall impervious area of 26.12 at., and a prarposed drainage area to the<wetlands of 39.47 ac. Forthe.purposes of the revised permit,we have included an future impervious area of i.8o ac within the wetland drainage area to preserve the amounts previously permitted. Therefore,the site area, overall impervious,and drainage-area to the wetlands have remained the same from the original permit to ensure the continued compliance of the project. METHODOLOGY The stormwater study was conducted using the natural.drainage features as depicted by field survey, and proposed development within the drai:nageareas. The scope of work included the following ana yses: Hydroloay o Simulation of the 1-year,io yoar, rainfall events for the Brunswick County area o Formulation of'the,-i�.year,io7year,flood hydrographs for the pre-and post•development drainage areas Hydraulic p Routi:ngthe i-year, lo=year,and flood h:yd:rographs for post development runoff through the proposed wetland basin The results of the hydrology calculations are used in the hydraulic analyses. The hydraulic design requiresAhe development of stage-storage and stage dis.charge,functions forthe wetland..The rainfallfrurtoff h drographs,.stage-storage and stage discharge functions have been compiled to create a routing.computer simulation model using;Haestad Methods Pon dPackvlo.o software. This PondPack model was then used to assess the impact of the peak discharges forthe design rainfall events. Two Eleven Midway WO Ordlect 3o8o6T8 November goo$ Stormwater Management Report 1` HYDROLOGY The SCS:Method was used to develcyp runoff hytiftrapht for the Type Ill, 24.hour duration, 'v-year and so-year:storm events. This m ethdd requires three basic pdratndters: a curve number(CN)j time of concentration (Q, and drainage area. Curve numbers were based on soil type and land use. Soil types were delineated from the Web Soil Surv6y for Brunswick.County, North C.".'rolin.a.. Land: use for ex.being. con.d.1flons was based on the inust �d=on4he-ptGpose.d-site.-plan. Times :of concentration were calculated using methods described in the SCS publication "Urban Hydrology for Small Watersheds,TR.S!i"and based on Brunswick County topographic maps, n4 field I aps.A survey data. The post-development time of concentration was estimated at 5 mirfutes-due to the: effect of piped drainage systems. The curve number data, time of concentration calculations and PondPack output summaries are included in the appendices of this report. HYDRAuucs Computer simulated reservoir routing ofthe i-year,and so-yeardesign storms utilized stage-storage and stage discharge functions.Stage-storage functions were derived from the proposed contours for the wetlands. A non-Ilnear:regressloh relation for sutface area versus elevation.was derived forlhe detention basin.This relation estimates the incremental volumeof the basin to the stage or elevation of that basin.Stage-discharge functions were developedlo size the outlet structure for the wetlands. CONCLUSIONS By keep i.hgthe site area,drainage area, impervio"surfaces, and BMP design consistent with the approved permit.,the conditions in permit.DWQ$W8 070935 are maintained,and also Meet Biunswick County regulations; no revisions should be necessary. Storm Event Pre-Development Post-Development Post wl Porid to, 1-Year 42.66 cfs '104i,'19 C& 41.65 cfs -year ............... 138-41 ch 219-05 d-5 14142.cfs Two Eleven Midway WAR Palest 368o678 Stor.mwater Management Report November 2o68 e Background information t Hydrologic Soil Group—Brunswick County,North Carolina r �r n 1 N -. Melers - ioo �o . .. ::....: eRo k in USDA h18Wral Ramuram Web Soil Survey 2.0 11l10=08 e>m Conservation Service National Cooperative Sol{Survey Page 1 of 4 Q �N W � R - 0. � R a ' 4 io lu � Q �o co ju U iw: J . � � � � r Mydi*OC Sol Group-Murrswldc COUnly,Nam Csrelins. Hydrologic .Soil Group Morrologle dolt Group--swMary:by.PRO WIN -amnaa kit COUnty,Norm VIli'm Wp unitt<yrtidel Y ranit narse RaasA Hera In:A01 pnerrrtatA01 '. . Pa —.. pion°loamy B .... Gil Wilton>ri o sandy loam D 4A 10 7% MH ty Lynchburg fine sandy C 3541 60% loam NoB Norfolk loamy line sand, $ 0 4 2 to 6 percent scopes. Pn Pantega mucky loarrr BID 1.1 Total;for Area'of Interest(AM 41-6.� . .. ,:.. fi0,il♦ Description Hydrologic soil-groups are based on Xxifing6jil.of r0nof1 potenial.Ste:are assigned to:one of four groups accardit to wits oE•ae.-1or' O when the soils are not protected by vegetation,,aro ma my rlv , ntftoasi �+ecipitation fmm long-duration storms. The sails in the United States are assigned to lour groups(A,B,C,and Q)and three.dual classes(A Q,B/D,and ClD).The groups are defined as.folleyrs: Group A.Soils having a high infiltration rate(low runoff potential)when thoroughly wet.These consist mainly of deep;well drained to excessively drained sands or gravelly<sands.These soils have a high rate of water transmission: droup 8.Soda having a moderate infiltration rate when.thoroughly wet.These consist ehiefiy®f modeiteir>deep ordeep,moderately well drained orwell drained soils that have nodetaitely fine,taxture to;moderately coarse.#sexture Tlsese soils have:a moderate:rate of water transmission. Group C.Se1ls having a slowtnfiWtiorl rate when thoroughly wet.Thess consist chl.*of soils hsaiving;.a lq.w that impedes the ddwrtward movement of water or .soil$of noderateiy fine texture otfnetexture,these soils have a siowrate otwater transmission. G.Muo:0.Sofis having a very�Iow,infltrsetiQn rate(high runoff potential)when thoroughly wet.These cola c Telly of trait too srltlgh shrinl-swell potential,soils that have a W wmW tOK-. that hsi e-o claypan or slay layer , at or near the surface,and a0 #Wt OM$all t Suer rJmpervious material. These soils have,a very slow rate of water transmission. If soil Is,assignod to a:dual hydrologic group(A/G,ISM,or CM),thefirst letter Is for drainedareas and the second is for undrained areas.Only the soda-Mat in their rtator`l condition are In group Q arwassigned to dual classft rspral l4ee esl... web:..bN Wxvoy, :Q Ctftervatlar waUOYr10 Cooperavve$oN Surrey Pipe 9 of4 Hydrdogia W firoW4kunswkk County,Rath Cw*Nns Rating Options Aggregation Method: Dominant CondMe n Component Pem of Cutoff, None Specified T'i rask Rule: Lower .. .... Eel LQ ii trM OM SurNsy s�i.Of '�i�va�ra tia�!ise N,�tloirml� . f i Pond Pack Routings 1 Job File: C:\Documents and Settings\dhopkins\Desktop\211 Midway\211 MIDWAY.PPW Rain Dir: C:\Documents and Settings\dhopkins\Desktop\211 Midway\ JOB TITLE Project Date: 10/22/2008 Rrn:lprt Engineer: DZQpkins Project Title: 211 Midway Project Comments: k 1 ... .... . Bentley Systems, Inc. SIN: 11.li0/200¢ Bentley PDndPack (10.00.027.00) 11:21 AM I Table of Contents, Table of Contents * ** wft** *****f**w** MASTER SUMMARY W.atershed:c:.i.,. Master Network Summary 1.01, TC CA.iCCIiATION$ Pt5T -9.FpgP! , Tc Cakes ... ... . .. ... ........... .. .. 2.01 RT. Tc CalcS 2.03 * ******************** CN CALCULATIONS POST TO POND.... Runoff CN-Area . .. ... ..... .. .... .... 3.01 PRE-DSVELOPMBNT Runoff CN-Area ... ... ..... .. .... .... 3.02 **yrvs*********xvt****** POND VOLUMES WETLANDS...,...; Vol; Elev—Area . .. .. . ... .... 4.01 ****r*rt**r*******#* OUTLET STRUCTURES *►********#t*tares***ter Outlet I........ Outlet Input Data ............... .... 5.01 Composite Rating Curve ..... ........ 5.03 i SIN. Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 11:21 AM 11:,/10/2008 Type. ... Master Network Summary Page 1.01 Name... . Watershed File.... C:\Documents and Settings\dhopkins\Desktop\211 Midway\211 Midway.ppw MASTER DESIGN STORM SUMMARY Network Storm Collection: New Hanover Total Depth Rainfall Return Event in Type RNF ID y�1 3.7000 Synthetic Curve TypeIII 24hr 10 7.0000 Synthetic Curve TypeIII 24hr MASTER NETWORK SUMMARY SCS Unit Hydrograph Method (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Max Return HYG Vol Qpeak 4peak Max WSEL Pond Storage Node ID Type Event ac--ft Trun hrs cfs ---ft--- ac-ft *HOST _ JCT 1 8.633 R 12.3500 41.65 *POST JCT 10 19.111 R 12.2000 141.42 POST TO POND AREA 1 8.669 12.1000 104.19 POST TO POND AREA 10 19.153 12.1000 219.05 *PRE-DEVELOPMENT JCT 1 3.924 12.1500 42.66 *PRE-DEVELOPMENT JCT 10 12.247 12.1500 138.41 PRE-DEVELOPMENT AREA 1 3.924 12.1500 42.66 PRE-DEVELOPMENT AREA 10 12.247 12.15.00 138.41 WETLANDS IN POND 1 8.669 12.1000 104.19 WETLANDS IN POND 10 19.153 12.1000 219.05 WETLANDS OUT POND 1 8.633 R 12.3500 41.65 4.0.25 3.760 WETLANDS OUT POND 10 19.111 R 12.2000 141.42 40.93 5.96.2. Bentley Systems, Inc. SIN: Bentley PondPack (10.00.027.00) 11:21 AM 11/10L2008 Type.... TC WCS i.ox POST TO POND File.... C:\Documents and Bettinqs\dhx)pkins\D6.4ktb!D\211 Midway\211 Midway.ppw . ........... ..... .............. 'TIME OF 00=NTAATION -CliTAUIATOR: Viij- Segment #1: Tc: User Defined Segment #1 Time. .083S hra Total Tc: .0833 hrs Calculated Tc < Min.Tc: Ube Minimum Tc. .. Use Tc .0833 hrs ... .. .............. M5 ...i .......fw li t� SIN: Bentley Systems, inc. Bentley PondPack (10.00.027.00) 11:21 AM 11/10/2.D09 Type.... Tc Calcs Page 2.02 Name.... POST TO POND File.. .. C:\Documents and Settings\dhopkins\Desktop\211 Midway\2.11 Midway.ppw Tc Equations used... ------------------------ Tc = Value entered by user Where: Tc = Time of concentration Bentley Systems, Inc. SIN* 11./10/2008 Bentley PondpaCk (10.00.027.00) 11:2.1 AM Type,.., .p T.c Calcs Page 2.03 Name.... PRE-DEVELOPMENT File.... C:\Documents and Settings\dhopkins:\Deakt.c)p\211 Midway\Zll Midway-ppw 4. TIte. pp CONCENTRATION CALCULATOR V Tc- user Defined Segment #1 Time: ,1667 hre Total Tc: .1667 hra Bentley Systems, Inc. Bentley PondPack (10.00.027-00) 11;'21 AM 11/10/2008 Type...- Tc Calcs zkQ# 2'04 Name.... PRE-DEVELOPMENT File.... C:\Documents and 8ettings\dhopkins\Desktop\211 Midway\211 Midway.ppw _ Tc Equations used.. . ------------------------------------------------------ To = Value entered by user Where: Tc = Time of concentration Bentley Systems, Inc. SIN. Bentley PondPack (10-00.027.00) �,.1:.21 11/1.0/200a Type.... RunoffCN-Area page 3.01 Name.... POST TO POND File.... C:\Documents and Settings\dhopkins\Desktop\211 Midway\:gll Midway.ppw ..................................... ....... .. .. .... .... ... RUNOFF CURVE NUMBER DATA Impervious Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN 00. 0 W T--k1TZVP1 "A. SIN: :Bentley Systems, Inc. Bentley PondPack (10-00-027-00) 11:21 AM 11-11.0/2008 Type.... Runoff CN-Area Page 3.02 Name.... PRE-DEVELOPMENT File.. .. C:\Documents and Settings\dhopkins\Desktop\211 Midway\211 Midway.ppw RUNOFF CURVE NUMBER DATA impervious Area Adjustment Adjusted Sail/Surface Description CN acres %C *UC CN -------- ---- --------- -- Open space .(Lawns,parks etc.) - Goo 79 1.9.00 74.00 impervious 98 .40 98.00 Woods - good 70 37.130 70.00 COMPOSITE AREA & WEIGHTED .CN 39.470 70.50 (71). . . . . . . . . . .... .. . . .. . .. . ..... .. .. . . .. .... . . . . . Bentley Systems, Inc. SIN: 11/10/2008 Bentley POndPack (10.00.027.00) 11:21 AM 'ty *;...; Vol: Elev-Area P @� 4.02 ,. WETLANDS C:\Documents and Settings\dhopkins\besktog\211 Midway\211 Midway.ppw 77, Elevation Planimeter Area Al+A2+sgr(A1*A2) Volume Volume Sum (ft) (sq.in) (sq.ft) (sq,ft) (at-ft) (ac-tt) --- --------------------------------------------- -. 39.00 ----- 1263,25 0 .000 .000. 134276 390041 2.991 2..991 41.00 - 14390 417317 3.193 42.00 - -- 153961 446046 3.419 9.664 43.00 ----- 164123 477045 3.6.50 13-254 POND VOLUME EQUATIONS * Incremental volume computed by the Conic Method for Reservoir Volumes. Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt. (Areal*Area2)) where: ELI, EL2 = Lower and upper elevations of the increment Areal,Area2 = Areas computed for EL1, EL2, respectively Volume = Incremental volume between EL1 and EL2 SIN: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 11:21 AM 11-1,10/2008 Type.... Outlet Input Data Page 5.01 Name.... outlet 1 File.... c:\D.ocuments and Settings\dhopkins\Desktop\211 Midway\211 Midway.ppw REQUESTED POND WS ELEVATIONS: Min. Elev.= 39.00 ft Increment = .10 ft max. Eiev.= 43.00 ft �- -- -•-. OUTLET CONNECTIVITY ---> Forward Flow Only (UpStream to DnStream) <---- Reverse Flow Only (DnStream to UpStre.am) <---> Forward and Reverse Both Allowed Structure No. Outfall El, ft E2, ft Weir Rectangular WO ---> TW 39.000 43.000 Weir-Rectangular W1 --=> TW 39.750 43..0;00 TW SETUP, DS Channel I f ;I I 'Bentley Systems. Inc. SIN: 11/10/2008 Bentley PondPack (10.00.027..00) 11:21 AM Type.:.. Outlet Input Data: Page .5.02. Name... . Outlet 1 File.... C:\Documents and Settings\dhopkins\De9ktop\211 Midriay\2.11 Midway.ppw OUTLET STRUCTURE INPUT DATA _ 3tr tare FD = WO Structure Type = Weir-Rectangular # of Openings - 1 Crest Elev. = 39.00 ft Weir Length 1.50 ft Weir Coeff. = 3.000000 Weir TW effects (Use adjustment equation) Structure ID - W1 Structure Type = Weir-Rectangular # of Openings = 1 Crest Elea. = 39.75 ft Weir Length = 33.50 ft Weir CQeff. = 3.000000 Weir TW effects (Use adjustment equation) Structure ID = TW Structure Type = TW SETUP, DS Channel ------------------------------------ FREE OUTFALL CONDITIONS SPECIFIED CONVERGENCE TOLERANCES... Maximum Iterations= 40 Min. TW tolerance = .01 ft Max. TW tolerance = .01 ft Min. HW tolerance = .01 ft Max. HW tolerance - .01 ft Kin. Q tolerance = .00 cfs Max. Q tolerance = .00 cfs ........ .......... .., . SIN: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 11.21 AM 11/10/2008 Type.... Composite Rating Curve Page 5.03 Name.... Outlet 1 File... . C:\Documents and Settings\dhopkins\Desktop\211 Midway\211 Midway.ppw ***** COMPOSITE OUTFLOW SUMMARY **** WS E1ev, Total Q Notes Converge ------------------ - - Elev ..Q . TW E1.ev Error - - --- ft cfs ft +/-ft Contributing Structures 39.00 -.00 Free OutfallTT WO 39.10 .14 Free Outfall WO 39.20 .40 Free Outfall WO 39.30 .74 Free Outfall WO 39,40 1.14 Free Outfall WO 39.50 1.59 Free Outfall W0 39.60 2.09 Free Outfall WQ 39.70 2.64 Free Outfall WO 39.75 2.92 Free Outfall WO +W1 39.80 4.34 Free Outfall WO +W.1 39.90 9.68 Free Qutfall WO +W1 40-00 17.06 Free Outfall WO +W1 40.10 26.00 Free Outfall w0 +W1 40.20 36.25 Free Outfall WO +Wl 40.30 47.66 Free Outfall W0 +W1 40.40 60.12 Free Outfall WO +W1 40.50 7.3.54 Free Outfall wo +W1 40.60 87.87 Free Outfall ➢]0 +W1 40.70 103.03 Free Outfall WO +W1 40.B0 119.00 Free Outfall WO +W1. 40.90 135.13 Free Outfall W0 +W1 41.00 153.18 Free Outfall WO +W1 4.1.10 171.33 Free Outfall WO +W1 41.20 190.16 Free Outfall WO +W1 41.30 209.63 Free Outfall W0 +W1 41.40 229.74 Free Outfall WO +Wl 41.50 250.45 Free Outfall WO +W1 41.60 271.75 Free Outfall WO +W1 41.70 293.63 Free Qutfall WO +W1 41.80 316.07 Free Outfall WO +W1 41.90 339.05 Free Outfall WO +W1 42.00 362.57 Free Outfall WO +Wl 42.10 386.61 Free Outfall WO +W1 42.20 411.16 Free Outfall Wo +W1 42.30 436.21 Free Outfall WO +W1 42.4.0 461.76 Free Outfall WO +W1 42.50 487.78 Free Outfall WO +Wl 42.60 514.28 Free Outfall WO +W1 _. Bentley Systems, Inc. SIN: 11/10/2008 Bentley PondPack (10.00.027.00) 71:21 AM Type.. .. Composite Rating Curve page 5.04 NaMe.... outlet 1 File.. .. C:\Documents and Settings\dhopkins\Desktop\211 Midway\211 Midway.ppw ***** COMPOSITE OUTFLOW SUMMARY **** WS E.lev, Total Q Notes -------- Converge ----------=-------------- • TW E1ev Error. ft cfs ft +%-ft Contributing Structures 42.70 541.24 Free Outfall No +W1 42.80 565.66 Free Outfall WO +w.l 42.90 596..52 Free Outfall w0 +W1 43.00 624.83 Free Outfall WO +W1 S/N: Bentley Systems, Inc. Bentley PondPadk (10.00.027.00) 11:21 AM 11/10/2009 Appendix A A-1 Index of Starting Page Numbers for ID Names ----- 0 ----- Outlet 1... 5.01, 5.0.3 ----- P ----- POST TO POND... 2.01, 3.01 P&E,-pFVq+OPMENT. .... 2.03, 3.02----- W ----- Wat.ershed... 1.01 WETLAN.DS. .. 4.01 Bentley Systems, Inc. SIN;. 11/10/2008 Bentley PondPack (10.00.027.00) 11:21 AM raven Time Calcutations �� & Type..... Time-Elev page 1.01 Name..... MDRAIN 1 OUT File.. . . I:\EngUser\Hunter\211 Midway\211 Midway.ppw TIME vs. ELEVATION (ft) Time Output Time increment = .1000 hrs hrs I Time on left represents time for first value in each row- ---------i-------------- ------- -..------------------------ .0000 1 39.75 39.74 39.73 39.73 39.72 .5000 l 39.71 39.7.0 39.70 39.69 39.6E 1.0000 -I 39.68 39.67 39.66 39.66 39.65 1.5000 (. 39.64 39.64 39.63 .39.62 39.62 2.0000 '( 39.61 39.61 39.60 39.59 39.59 2.5000 39.58 39.58 39.5.7 39.57 39.5.6 3.00.00 ;; 39.56 39:55 39.55 39.54 39.54 3..50.00 39.53 39.53 39.52 3.9.52 39.51. 4.00.00 ► 39.51 39.50 39.50 39.49 39.49 4.5000 1 39.4.9 39.48 39.48 39.4.7 39.47 5.0000 ,j 39.47 39.46 39.46 39.45 39.45 5.5000 39.45 39.44 39.44 39.43 39.4.3 6.0000 <j 39.43 39.42 39.42 39.42 39.41 6..5000 1 39.41 3.9.41 39..40 39.40 39.40 7.0000 j 39.39 39.39 39.39 39.39 39.38 7.500.0 1 39.38 39.38 39..37 39.37 39.37 0.00.00 ;) 39.36 39.36 39.36 39.36 39.35 8.5000 :1 39.35 39.35 39.35 39.34 39.34 9.0000 ;) 39..34 39.3:4 .39.33 39.33 39.33 9.5600 j 39.33 39.32 39..32 39.32 39.32 10.0000 :( 39.31 39.31 39.31 39.31 39.31 10..5000 i 39.30 39.30 39.30 39.30 39.30 11.00.06 1 39.29 39.29 39.29 39.29 39.29 11.5000 39.28 39.2E 39.28 39.28 39.28 12.0000 I 39.27 39.27 39.27 39.27 39.27 12.5000 .:' 39.26 39..26 39.26 39.26 39.26 13.0000 1 39.26 39.25 3,9.25 39.25 39.25 13.5000 `1 39.25 39.25 3.9.24 39.24 39.24 14.0000 )° 39.24 39.24 39.24 39.24 39.23 14.5000 39.23 39.23 39.23 39.23 39.23 15.0000 ;:) 39.23 39.22 39.22 39.22 39.22 15.5000 :}_ 39.22 39.22 39.22 39..21 39.21 16.0000 =j 39.21 39.21 39.21 39.21 39.21 16.5000 j: 39.21 3.9.21 39.20 39.20 39.2.0 17.000A {; 39.20 39.20 39..20 39.20 39.20 17.5000 `.)' 39.19 39.19 39.19 39:19 3'9.19 18.0000. j 39.19 39.19 39.19 39.19 39.19 18.5000 < ' 39.1B 39.18 39.18 39.18 39.18 19.0000 :1: 39.18 39.18 39.18 39.i8 39.18 19.5000 ]: 39.17 39.17 39.17 39.17 39.17 20.0000 39.17 39.17 39.17 39.17 39.17 20.50,00 :: 39.16 39.16 39.16 39.16 39.16 2.1..0000 39.16: 39.16 39.16 39.16 39.16 I S/N:: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7.:28 AM 11d2:4/.2.008 f Type.... Time-Elev Page 1.02 Name.... MDRAIN 1 OUT File.. . . I:\Enc3User\Hunter\211 Midway\211 Midway..ppw TIME vs, ELEVATION (ft) Time I Output Time increment = .1000 hrs hrs I Time on left represents time for first value in each raw. 2.1..5000 1 39..16 39.16 39.15 39.15 39.15 :22` *000 '1 3.9:.15-- - ._ 39.15 39.is 39.15 39.15 _ 22.5000 I. 39.15 39.15 39.15 39.15 39.15 T 23.0000 I(: 39.14 39.14 39.14 39.14 39.14 23.5000 1 39.14 39.14 39.14 39.14 39.14 24.0.000 1: 39.14 39.14 39.14 39.14 39.13 24.5000 ,, 39.13 39.13 39.13 39.13 39.13 25.0000 I 39.13 39.13 39.13 39.13 39.13 25.5000 39.13 39.13 39.13 39.13 39.13 26.0000 j`. 39.12 39.12 39.12 39.12 39.12 26.5000 39.12 39.12 39.12 39.12 39.12 27.0000 f 39.12 39.12 39.12 39.12 39.12 27.5000 I 39.12 39.12 3.9.12 3.9.11 3:9.11 28.0000 1 39.11 3.9.11 39.11 39.11 39.11 28.5000 39.11 39.11 39.11 39.11 39.11 29.0000 j, 39.11 39.11 39.11 39.11 39.11 29.5000 I 39.11 39.11 39.11 39.11 39.10 30.0000 { 39.10 39.10 39,10 39.10 39.10 30.5000 j; 39.10 39.10 39.10 39.10 39.10 31.0000 I. 39.10 39.10 39.10 39.3.0 39.10 31.5000 ( 39.10 39.10 39.10 39.10 39.10 32.0000 j 39.10 39.10 39.10 39.09 39.09 32.5000 1 39.09 39.09 39.09 39.09 39.09 33.0000 39.09 39.09 39.09 39.09 39.09 33.5000 j 39.09 39.09 39.09 39.09 39.09 34.0000 .1 39.09 39.09 39.09 39.0:9 39.09 34.5000 .j 39.09 39.09 39.09 39.09 39.09 35.0000 .) 39.09 39.08 39.08 39.08 39.08 35.5000 ) 39.08 39.08 39.08 39.08 39.08 3.6.0000 39.08 39.OB 39.08 39.Oe 39.08 36.5000 j 39.08 39.00 39.08 39.08 39..08 37.0000 39.08 39.08 39.08 39.08 39.08' 37.5000 39.08 39.08 39.08 39.09 39.08 30.0000 39.OB 39.07 39.07 39.01 39.07 38.5000 11 39.07 39.07 39.07 39.01 39.07 39.0000 ,j 39.07 39.07 39.01 39.67 39.07 39..5000 39.07 39.07 39.0739.0.7 39.07 40.0600 $ 39..07 39.07 39.D7 39.07 39.07 40.50.00 ?t, 39.07 39.07 39.07 39.07 35.07 41.0000 1 39.07 39.07 39.07 39.07 39.07 41.5000 1 39.07 39.06 39.06 39.06 39.06 42.0000 :1'. 39.06 39.06 39.06 39.06 39.06 42.5000 39.06 39.06 39.06 39.05 39.06 43.0000 [ 39.06 39.06 39.06 39.06 39.06 s .9/N: Bentley Systems, Inc. 'Bentley PondPack (10.00.027.00) 7:20 AM 11/24/2.0.08 Type. ..; Time-Elev Page 1.03 Name. . ., MDRAIN 1 OUT File. . .... I:\EngUser\Hunter\211 Midway\211 Midway.ppw TIME vs. ELEVATION (ft) Time I Output Time increment = .1000 hrs hrs { Time on left represents time for first value in eo:ch row. 43.5000 1 39.06 39.06 39.06 39.06 39.06 44J0000_ 39.06 39._06 39.06 39.0E 39.06 _ 44.5000 I 39.06 39.06 39.06 39.06 39.06 45.0000 "( 39.06 39.06 39.06 39.06 39.06 45.5000 :( 39.06 39.06 39.05 39.05 39.05 46.0000 ,1 39.05 39.05 39.05 39.05 39.05 46.5000 ;1 39.05 39.0.5 3.9.05 39.05 39.05 47.0000 39.05 39.05 39.05 39.05 39,05. 47.5000 ;r 39.05 39.05 39.05 39.05 39.05 48.Q000 39..05 39.05 3.9.05 39.05 39.05 48.5000 C 39.05 39.05 39.05 39.05 39.05 49.0060 39.05 39.05 39.05 39.05 39.05 49.50.00 ;j 39.05 39.05 39.05 39.05 39.05 50.0000 I 39.05 39.05 39.05 39.05 39.05 50.5000 1 39.05 39.04 39.04 39.64 39.04 51.0000. 39.04 39.04 39.04 39.0.4 39.04 51.5000 I 39.04 39.04 39.04 39.04 39.04 52.0000 i 39.04 39.04 39.04 39.04 39.04 52.5000 39.04 39.04 39.04 39.04 39.04 53.0000 39.04 39.04 39.04 39.:0.4 39.04 5.3:5000 1, 39.04 39.04 39.04 39.04 39.04 54.0000 1. 39.04 39..04. 39.04 39.04 3.9.04 54.5000 1. 39..04 39.04 39.04 39.0.4 3.9.04. 55.000b 1; 39.04: 39.04 39.04 39.04 39.04 55.5000 39.04 39.04 39.04 39.04 39.04: 56.0000 r: 39.04 39.04 39..04 39.04 39.04 56.5000 1 39.0.4 39.04 39.03 39.03 39.03 5.7.0000 ( 39.03 39.03 39.03 39.03 39.03 57.5000 39.03 39.03 39.03 39.03 39.03 58.0000 39.03 39.03 39.03 39.03 39.03 58.50:00 39.03 39.03 39.03 39.03 39.03 59.0000 1 39.03 39.03 39.03 39.03_ 39.03 59.5000 f 39.03 39.03 39.03 39.03 39.03 60.0000 4, 39.03 39.03 39.03 39.03 39.03 6.0.5000 [ 39.03 39.03. 39.03 39.03 39.03 61.0000 39.03 39.03 39.03 39.03 39.03 61.5000 39.03 39.03 39.03 39.03 39.03 62.0000 1. 39.03 39.03 39.03 39.03 39.03 62.5000 39.03 39.03 39.03 39.03 39.03 63.0000 39.03' 39.03 39.03 39.03 39.03 63.5000 39.03 39.03 39.03 39.03 39.03 64.0000 39.0.3 39.03 39.03 39.03 39.03 64.5000 39.03 39.03 39.03 39.03 39.03 65.0000 ( 39.02 39.02 39.02 39.02 3.9.02 SIN: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:28 AM 11/2.412008 Type. TiMe-Elev Page 1.04 Name. MDRAIN I OUT File.;. . I:\EngUser\Hunter\211 Midway\211 Midwayippw .............. ............... TIME vs. ELEVATION (ft) Time I Output Time increment = lDOO bra 1=9 I Time on left represents time for first value in each raw. -------------- T-T 6.5.5000 1 39.02 39.02 T 39.02. 39.02 39.02 6C0000 J, .3-9-02 39.02 59.102 39.02 39.02 66.5000 J. 39.02. 39.02 39.02 39.02 39.02 67.0000 39.02 39-02 39.02 39.02 39.0.2 67.5000 39.02 39.02 39.02 39.02 68.0000 C 39.02 39.02 39.02 39.02 39.02 68.5000 C 39.02 39.02 39.02 39.02 39.02 69.0000 1: 59.02 39.02 39.02 39.02 39.02 69.5000 1 39.02 39.02 39.02 39.02 39.02 70.0000 39.02 39.02 39.02 39.02 39.02 70.5000 39.02 39.02 39.02 39.02 39.02 71.0000 39.02 39.02 39.02 39.02 39.02 71.5000 39.02 39.02 39.02 39.(Y2 39.02 72-0000 39.02 39.02 39.02 39.02 39.02 72.5000 # 39.02 39.02 39.02 39.02 39.02 73-0000 39.02 39.02 39.02 39.02 39.02 73.5000 39.02 39.02 39.02 39.02 39.02 74-0000 39.02 3.9.02 39.02 39.02 39.02 74..5000 1 39.02 39.02 39,02 39.02 39.02 75.0000 J, 39.02 39.02 39.02 39.02 39.02 75.5000 39.02 39.02 39.02 39.02 39.02 76.0000 39.02 39.02 39.02 39.02 39.02 76.5.000 1 39.02 39.02 39.02 39.02 39.02 77.0000 C 39.02 39.02 39.02 39.02 39.02 77.5000 39.01 35.01 39,01 39.01 39.01 78.00.0.0 39.01 39.01 39.01 39.01 39.01 78.5000 1 39.01 39.01 39.01 39.01 39.01 70.00()0 39.Q1 39.01 39.01 39.01 39.01 7945000 39.01 39.01 39.01 39.01 39.01 80,0000 j 39.01 39.01 39.01 39.01 39.01 8.0i5:000 1 3.9.01 39.01 39.01 39.01 39.01 81,6000; 39.01 39.01 39.01 39.01 39.01 81.50.00 J 39.01 39.01 39.01 39.01 39.01 82.0000= t 39.01 39.01 39.01 39-01 39.01 82.5000 39.01 39.01 39.01 39.01 39.01 83.0000 5:9.01 39.01 39.01 39.01 39.01 8:3.5000 3.9.01 39.01 39.01 39.01 39.01 84.000a 1: 39.01 39.01 39.01 39.01 39.01 84..5400& j 39.01 39.01 39.01 39.01 39.01 MOM 39.01 39.01 39.01 39.01 39.01 85.5000 39.01 39.01 39.01 39.01 39.01 86.0000t, 39.01 39.01 39.01 39.01 39.01 8'6.50 0 0, 39.01 39.01 39.01 39.01 39.01 87.0000 39.01 .39.01 39.01 391.01 39.01 FRig S/19: Bentley Systems, Inc. <Berztley PondPaCk (10.00.027.00) 7:20 AM 11/24/2008 Type. . .. Time-Elev Page 1.05. Name. . . . MDRAIN 1 OUT. File. . . . I:\EngUser\Hunter\211 Midway\211 Midway.ppw TIME vs. ELEVATION (ft) Time I Output Time increment = .1000 hrs hrs I Time on left represents time for first value in each row. ---------I------------ ---_-- 87.5000 1 39.01 39.01 39.01 39.01 39.01 88.0000 l 39-01 39.01 __ 39-01 39.01. 39-01 _. - 88.5000 ) 39.01 39.01 39.01 39.01 39.0.1 89.0000 [ 39.01 39.01 39.01 39.01 39.01 89.5000 39.01 39.01 39.01 39.01 39.01 90.0000 39.01 39.01 39.01 39.01 39.01 90:5000 .r 39.01 39-01 39.01 39.01 39.01 91.0000 J' 39.01 39.01 39.01 39.01 39.01 91.5060 1 39.01 39.01 39.01 39.01 39.01 92.0000 ( 39.01 39.01 39.01 39.01 39.01 92.5000 [ 39.01 39.01 39.01 39.01 39.01 93.0000 1 39.01 39.01 39.01 39.01 39.01 93.5000 j 39.01 39.01 39.01 39.01 39.01 94.0000 1 39.01 39.01 39.01 39.01 39.01 94.5000 1. 39.01 39.01 39.01 39.01 39.01 95.0000 1 39.01 39.01 39.01 39.01 39.01 95.5060 ( 39.01 39.01 39.01 39.01 39.01 96.0000 i 39.01 39.01 39.01 39.01 39.01 96.5000 'I 39.01 39.01 39.01 39.01 39.01 97.0000 ji 39.01 39.01 39.01 39.01 39.01 97.5000 j 39.01 39.01 39.01 39.01 39.01 98.000.0 j, 39.01. 39.01 39.01 39.01 39.01 98.5OD0 {. 39.01 39.01 39.01 39.01 39.01 99.0000 `I' 39.01 39.01 39.01 39.01 39.01 99.5000 j' 39..01 39.01 39.01 39.0.1 39.01 100..0000 ( 39-01 39.01 39..0.1 39.01 39.01 100.5000 I• 39.01 39.03 3.9.01 39.01 39.01 101.0000 4 39.01 39.01 39.01 39.0.1 39.01 101.5000 1 39.01 39.01 39.01 39.01 39.01 102.0000 '{ 39.01 39.01 39.01 39.01 39.01 102.5000 ( 39.01 39.01 39.01 39.01 39.01 103..0000 :[ 39.01 39.01 39.01 39.01 39.01 103.5000 ;[ 39.01 39.01 39.01 39.01 39.01 1.04.0000 39..01 39.01 39.0.1 39.00 39.00 104.5000 3.9.00 39.00 39.00 39.00 39.00 105,0000 ;[ 39.00 39.00 39.00 39.00 39.00 105.5000 [ 39.00 39.00 39.00 39.00 39.00 1.06.0000 39.00 39.00 39.00 39.00 39.00 106.5000 ;[ 39.00 39.00 39.00 39.00 39.00 107..0000 t 39.00 39.00 39.00 39.00 39.00 107.5000 39..00 39.00 39.00 39.00 39.00. 108.0000 .{, 39.00 39.00 39.00 39.00 39.00 108.50.00 j 39.00 39.00 39..00 39.00 39.00 109.0000 39.00 39.00 39.00 3.9.00 39.00 I .. ............... 5I1 : Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:2-8 AM 11124/2008 Type. . .. Time-Elev Page 1.06 MDRAIN 1 WV File. . . . I:\EngUser\Uunter\211 Midway\211 Midway.ppw TIME vs. ELEVATION (.ft) Time { Output Time increment = .1000 hrs hrs is Time on left represents time for first value in each row. i4:----_ _. -��t--- -- 109.5600 #" 39.00 39.00 39.00 39.00 39.00 T _wo."0400_ ( 39.U4 __ 1-9.00 39.00 39.00 39.00 11 .500.0. f. 39.00 39.00 39.00 39.00 39.0 W 111.0000 ( 39.00 39.00 39.00 39.00 39.00 111.5000 ). 39.00 39.00 39.00 39.00 39.00 112.0000 39.00 39.00 39.00 39.00 39.00 112.5000 39.0.0 39.00 39.00 39.00 39.00 113.0000 C: 39.00 39.00 39.00 39.00 39.00 113.5000 j 39.00 39.00 39.00 39.00 39.00 114.0000 39.00 39.00 39.00 39.00 39.00 114.5000 39.00 39.00 39.00 39.00 39.00 115.0000 39.00 39.00 39.00 39.0.0 39.00 115.5000 ` 39.00 39.00 39.00 39.00 39.00 116.0000 39.00 39.00 39.00 39.00 39.00 116.5000 39.00 39.00 39.00 39.00 39.00 117.0000 ( 39.00 39.00 39.00 39.00 39.00 111.6000 39.00 39.00 39.00 39.00 39.00 110.0000 1 39.00 39.00 39.00 39.00 39.00 118.5000 39.00 39.00 39.00 39.00 39.00 119.0.000 ) 39.00 39.00 39.00 39.00 39.00 119.5000 ( 39.00 39.00 39.00 39.00 39..00 120.0000 ) 39.00 39.00 39.00 39.00 39.00 120.5000 39.00 39.00 39.00 39.00 39.00 121.0.0.00 {• 39.00 39.00 39.00 39.00 39.00 121.5000 39.00 39.00 39.00 39.00 39.00 122..0000 ( 39.00 39.00 39.00 39.00 39.00 122.5.0.00 ( 39.00 39.00 39.00 39.00 39.00 123.0000 ) 39.00 39.00 39.00 39.00 39.00 123.5000 r 39.00 39.00 39.00 39.00 39.00 124.0000 'J 39.00 39.00 39.00 39.00 39.00 124.5000 ;f 39.00 39.00 39.00 39.00. 39.00 125.0000 39.00 39.00 39.00 39.00 39.00 Bentley Systems, Inc. Bentllay PondPack (10.0.0.027.00) 7:28 AM ll./24/2008 Soils report Information smmECS CAROLINA S LLP Geotechnical a Construction Material's•261 •Vicilii es February 5,2008 i Mr. Scott Cooke Nick Oar"Development.. 6131 Oleander Drive ,Nt�rrtl�C1 Re: Report of Subsurface.Exploration and Ueotechnieai.Enginaraing Evaluation Midway Road ShoppMg:CWW Midway,North Carolina ECS project No.;22:13740 Dear Mr,Cooke; As authorized by your acceptance of our proposal number 10989R,dated January 18,2008,ECS Carolinas, LLP has completed a subsurface exploration for the subject project. This report presents the results of the freld exploration, .laboratory testing and engineering analysis, along with our reconitnendations for desip of.geoteoWdal related.items. We appreciate the opportunity to be of servioe to ypu durm the dosign phase of this project and look .forward to our continued involvement during tare construction please. If you have any questions concerning the information and recommendations presented in this report, please contact us at(910)686.9.114 for Ruther assistance 1. Respectfully submitted, ECS CAROLINASr LLP Winslow E.'Goins,P.E. Vlltd M.�Sobhr-, Project Engineer Principal Engineer North Carolina License No.33751 fiForth Carolina License No.22983 t; 7211 Ogden Business%k +Suite 201 •Wilmington,NP 28411 •(910)686-9114 Fax(910)686-9666 •wwwxeslimited,com Asheville,NC•Charlottat NC Greensbam,NC•Greenville,SC•Raleigh,NC•3wansbom,NC*•Wiltnington,.NC *testing serums only REPORT OF SUBSURFACE, EXPLORATION AND GEOTECIINICAL ENG NEMPRING ANALYSIS MIDWAY ROAD SHOPPING CENTER MIDWAY,NORTH CAROLINA . , "' Fit MR.SCOTT COOKS, NICK GARRETT DEVELOPMENT 6131 OLEANDERDRIVE WII,MINGTON,NORTH CAROLINA 28403 -:Z .v rnre us.4:a,-rrr-r TICS CAROLINA%LLP 7211 OGDEN BUSINESS PARK SUITE 201 WILNIIN`TGTON,NORTH CAROLINA 28411 LCS CAROLIN,'AS,LLP PROJ'EC�'NO.:22.13740 t. f 11 tt v elon t NcI. O� FEBRUARY 5,2008 j 1 TABLE.OF gQN'IEW F 1. EXECUTIVE SUMMARY.... M.w1YYwNiwl.fM. YIN.Hf!•w1...I.N.!!.l N..N.N�1...lINN11•N.M.Nw1ww.Y.•1` .. N.w.•lNf/. _ ' 10 PROD 4C T OVERVIEW .IMwNNN.�.N�.1.�.1..M.�!N}..u.M�1N...NY.NN.it���NliYYwN:I..Y�..fI.wY.1.YYYY.YY.YYNYI.i:lifi.l:NIN� ?1 Proj ctIri .... ........ A.n1.H1.•1,gby.gV.nwP.................nu ..2 ! 2.2 Soope of Work .................. ...........,. ..2 - - 2..3 Purpose of l location....... ...- ..................A.............: .. ...... 2 7 i 1 3.0 EXPLORATION PRvCEDUMN.............:....N.......oil........w.N....,....1......ill......... ...........91 q:3 3.1 Subsurface Exploration Procedures...................................................................................................3 3.1.1 CPT Borings...........................................:...:::.......:............:......:,:,.,.,...:.;::...........::...:...::.............3 11.2 QcowProbe Bom- gs..... . ..............•......... .............•..................................,...........................3 4.01;3iPLORATION) ESMTS L.Nwbw.uuuN.Nw.N.ww...NY.w.N...Y1.YulN.>:NN..1w•uwu....►u N........NNNN...Yw.Nr4 4.1 Site Conditions.... ................. ..............................•....................I.,. .......................................:.4 4.2 Regional Geology.............................................•.............................................................................•...4 4.3 Soil Conditions... ............. ..............................................,........................................•..4 4.4 Groundwater.Condidons.w................,.................:...A.........................................Y.w.........................,.....5 5;0 ANALYSIS AND RECOMAM,NVATIEONS...................:.NIY...YYNNN.VN.N•NlHINNNR.u/NN.nNN.N.a.HPf 5.1 Cot struction Dowmet rig.,...... ............. .....:........... ...................a...... . ..6 5.2 Excavation Conditions.....................................................w..................:,..:...:::.................,..w.,...,.....,.:6 5.3 Subgrade.Preparadw.........I......................... . . .... , .....................................................................6 5.4 ,Engineered Fill P18C.Ment...................... ..........•..,.,A-........,.......,...............................................7 5.,5 Foundations DeslgnA.w. .. !... ....... .,Ni...... ......A....... ........:....... .� 5.6 Floor Slab Design ....... ..................•.......•.................. ............ .,..... ............... ...............9 5.7 SlteDraiinago. .... .. ... ...................................................•..................................;..............................9 5.8 Coa trttodon Considerations..... .........................................................................................10 6.0:CLOSIl►1G..................Nwww..NN..... ....u. m(a fks..NiiYtw.es.ljiiWYlfiYg NnweY•v. w.iuti.N.lNi....YNN.v.ur.ii:.wiw..i � APPENDICES APPENDIX A-FIGURES APPH MIX B-CRT AND GBo-mom Bommo Loos APPENDIX C-owiHRA.mpmom. Report of Subsurface Bxploration end Geotecluucal Engineering Aunlysis Midway Road Shoppiieg Center Midway,North Carolina ECS Project No.:22.13740 1.0 EXECUTIVE SUMMARY This report contains the results of our subsurface exploration and geoteehnical engineering analysis for the proposed site located at the northwest corner of the intersection of NC Highway 211 and Midway Road in Midway,North Carolina. At the time of our field exploration, the existing.site was partially open and partially wooded, An.existing stream traverses the site from north to south. The site is relatively level. We understand that several detention ponds will be excavated at the site. We understand fire existing stream ' wiIl be re-routed using culverts and pipes. We undetaotd that the existing OWC electrical distributions yard will be moved to the back of the site. Project site information was not available at the time this proposal was:prepared. At S-1 and S-2, approximately b inches of organic topsoil was reported by the drillers::at the boring locations, Beneath the surface to depths of 10 feet, the..test borings typically encountered intermittent layers of loose to medium dense silty sands (SM).and very soft to stiff clays and silts (ML, MH, CL, CH), From 1.0 feet to depths of approximately 15 feet,the test boring.typically encountered intermittent {. layers of loose to medium dense slightly silty,silty and clean sand(SM-SP,SM)SF)and firm to stiff'silts and clays(ML,MH,CL,CH). 9. At S-8 and S-9, approximately 6 inches of organic topsoil.was reported by the..drillers at the boiling � locations, Beneath the surface to depths of 3.5 feet,the test borings typically encountered intermittent layers of loose to medium dense silty sands (SM) and very'► soft.to stiff clays and silts.(ML MH, CL, m CH). From 3:5 feet to depths of approximately 12 feet,the testboring typioally encountered intermittent layers of loose to dense slightly silty, silty and clean sand.(SM-SP,SMP SP) and firm to.verb.stiff silts and clays:(ML,M%CL,CH).. At the goo-probe boring locations, approximately 6 to 10 inches.of organic topsoil was observed. Froin ten inches to 80 feet,the test boring typically encountered intermittent layers of silty sand,:.clayey sand, clean sand,sandy clays(CL)and peat. in summary; the proposed electrical distribution yard can be supported on conventional shallow foundations. Undercutting of the upper 3.5 feet of soil should be anticipated and verified in the field during the proof rolling and foundation evaluation operations. For foundations designed and constructed in.accordance with the recommendations provided in this report,a net allowable soil bearing prossures;O 2,000 pounds:per square foot(psf) is recommended for use in proportionir g.shallow foundationsi We request the opportunity to review out foundation recommendations and make any necessary changes once building location,structural loads,and site design grades are doternined. Specific information regarding the subsurface exploration procedures used, the site and subsurface conditions at the time of our exploration, and our conclusions and recommendations concerning the geotechnical design and construction aspects of the project are discussed in detail in the subsequent sections of this report. Please note this Executive Summary is an important part of this report and should be considered a "sul)gntaey" only. The subsequent sections of this report constitute our findings, } conclusions,and recommendations in their entirety. Prepared By: Reviewed By: Winslow E.C#oins,P.E. Walid M.Sobh,P.E. Project Engineer Principal Engineer ,1:. Report of Subsurface Exploration and Geotechnical EngtneeringAnalyais Midway.Road-Shopping Cwtdr Midway,North Caroilni ECS Project No.:22.13740 1 PROJECT OVERVIEW 2.1 Froiectlnformatioll Our understanding.of the proposed development is based upon our discussions with representatives of stick Garrett Development and a site map provided to BCS by Nick Garrett Development. The proposed ice¢A the A9AWC-0 Omer of werseo . of Im MOWA*111 iow UU-My RW ik lalui ;� North Carolina At:the time. of our field exploration, the a 3. .g site was partially open and partially wooded, An misting.sucam traverses flee:site front north to,south. The site is relatively level. We understand that several detention ponds will be excavated at the mite. We underaiand the existing;stream z will be.ir-muted using::culverts and pipes. We undwstand that the existing HBMC electrical distribution yard will be moved to the back of the site. Project site information was not available at the.time this ' proposal was prepared. 2.2 gebbe oil . ark The conclusions and recommendations contained in this report are based on the results of; • four electronic cone penetration test(CPT)borings 0 five goo-probe soil test borings(locations selected by others), l: a visual examination of the samples obtained during our field exploration, • engineering analyses of the field findings with respect to the provided project information. 2.3 PurMes:of&bloraHoxi The purpose of this exploration program was to doternune the soil and groundwater conditions at the site { and to develop engineering recommendations to assist in the dosign and construction of the proposed i project, We accomplished these objectives by: i • performing a site reconnaissance:to evaluate the existing site conditions, * drilling test borhigs to explore the subsurface soil and groundwater conditions, ■ analyzing the field and laboratory data to develop appropriate geotechnical engineering recommendations. [.. a i i E i Report of Subsurface Exploration and Geotechnical Engineering Analysis Midway Road Shopping Center Midway,North Cacolin s ECS Project No.:22.13740 3.0 EXPLORATION PROCEDURE'S 3.1 Subsurface Axntoration Proved 3.1.1 Cone Penetration Testling +sbr a tt onstratlo�t test fis ri wee ,ri ned darIn ouf 1 e to cry. penetration test sounding was performed in general conformance with ASTM D 5778 by our subcontractor: The soundings were perfonned with a track mounted rig. The approximate location ofthe CPT sounding is indioatcd:on the CPT Location Diagram in Appendix A. of this report. The cone used in:the soundinghas a tip.area of 15 cm2 and a sleeve area of 225 ad. The CPT soundings recorded tip.resistance and sleeve friction measurements to assist ut determining.pertinent index and engineering properties of the site soils. The ratio of the sleeve friction to tip resistance is then used to aid in assessing the soil types through which the tip is advanced, The results of the CPT. are presented in Appendix B. 3.1.2 Geo-Probe Borings Five goo-probe borings were performed. The geo-probe obtains continuous soil satnples by driving four' foot long sainple tubes by means of a pmtussiion hammer. The sample tubes are returned to the soils i laboratory in Wilmington,North Carolina.. .d } 1 F' F.eport of Suh8urboa Exploration and Geotechnical&SIneeriag Analysis Midway Road Shopping Center Midway,North Carolina ECS Frgjeet:No.:22.13740 4.0 UPLOBATION.RE,SULTS 4.1 Site Canditions The proposed sito located 4:the northwest,corner of the intersection of N.C.Highway 211 and Midway Road in.Midway,North Carolina. At the time of our field cptYci s�iae tart existingIMrUUIjYWWULLIPU. An tream-t:triaverst&ft. sift iii co"boa tti smAk roghk-sWo 10.E with typical elevations. 4.2 Resional..Geoloav :site ls.located in the:Coastal Plain Physiographio Province of.North Carolina. The-Coastal Plain is com}osed of sevear terraces,.each representing..a former level of the Atlantic Ocean. Soils in this area generally consist of sedimentary materials transported frorn'other-areas by the ocean orAvers. These: deposits vary in Wol mess ftm.a thin veneer;along the western edge of the region to more than 10,000 feet near the w.PA The sedimentary deposits of the Coastal Plain rest upon-consolidated.rocks similar.to those undedyIng the Piedmont and Mountain Physiographic Provinces. In general, shallow unconfined groundwater:movernent:within the overlying soils is largely controlled by topographic gradients. Recharge occurs primarily by hi filtration along higher elevations and typically discharges into streams or other surface water bodies,. The:elesvat on of the shallow water** Is transient and can vary:greatly with seasonal ffluettiations.in preoiVitation. 4.5 Soil.Conditions CPT Beringer At S-.1 and S-2,approximately 6.inchm of organic topsoil was reported by the drillers at tho boring locations.. Beneath the surface to de)ithe Of 10 feet, dw test boring$ typically encountered 1. interinittent layers of loose to medium dense silty sands(SM)and very soft to stiff clays and silts(ML, MH, CL, CM. Tlie.eouivolent corrected standard penetration test resistances (N4-values)in these soils generally ranged from 2 to 12 blows per foot(bpf). From 10:fed to depths of approximately 15 feet;the test boring typically encountered intermittent layers of loose to medium.dense slightly silty,silty and clean sand(SM-SP,Slid, SP) and firm to stiff silts and clays(NIL,MH,Cl.,CM. The equivalent corrected standard penetration test resistances(Air`values)in these soils generally ranged fl om 6 to.29 bpf. , At S=8.and S-9, approx4ruftly. 6 inches of of%snie topsoil was ,reported by the drillers at the boring locations. Beneath the.surface to depths of 3.5 feet, the test borings typically encountered intermittent layers of loose to medium dense silty sands (SM) and very soft to stiff clays and silts (ML, MH, CL, CH). The equivalent corrected standard penetration.test resistances(N*-values)in these soils generally ranged from 2 to 19 blows per foot(bpf). Flom 3.5 feet to depths of approximately 12.feet,the test boring typically encountered intennittent layers of loose to:dense slightly silty,silty and clean sand(SM-SP, SM,SP)and firm to vary stiff silts and clays (ML,MR CL,CII). The equivalent.corrected standard penetration test resistances(N*-values)in these soils.gencraTly ranged frown 5 to 33 bpf. 1. .4x Report of Subsurface Exploration and Geotechnical Migineering Analysis Midway Road Shopping Center Midway,North Carolina BCS Ptvjcct No.:22.13740 The descriptions provided in this section are a general summary of the subsurface conditions encountered within the CPT test borings. The CPT Boring Records in Appendix B contain detailed information recorded at each of the boring locations. Geoprobe Boring; Approximately d to 10 inches of organic topsoil was observed. From ten inches to 8.0 feet,the test boring typically encountered intermittent layers of silty sand,clayey sand, clean sand, sandy clays(CL)'and peat. 4.4 Groundwatr Conditions Groundwater:observations were made during the.drilling operations at ail boring locations. Furthermore, visual observations of the samples retrieved during drilling exploration were also used in evaluating the groundwater conditions The depths were observed."to.rang;fYom 1.0 to 2,2 feet below the i existing grade in.the CPT borings. In the Goo-probe boring,the groundwater was observed to range from approximately 2.0 to 3.0 feet. Due to the presence of clays in the upper .five feet, perehed water: ; conditions may exist at the.site. Theihighest groundwater observations are nortil9tlly ha tl late winter and r1+;pig,and' our currant groundwater observations are expo)td bo.ri6.alr o#` tative of the seasc ial fmnrn water table. Variations in the location of the long�.wtiter ttlbIt toy`occur as a resuh f e l€gos 1 > precipitation,evaporation,surface water runoff,and other factors not immediately apparent at'the`time of this.exploration. If long term water-levels are crucial to the development of this site,it would be prudent to verify water levels with the use of perforated pipes or plezometers. The a'elattvely shallow groundwater.conditions encountered within the boreholes.are expected to impact utility excavations: hlow.ever,this:will depend on final site design grades. Consequently,the<diversion of surface water.should be expected in order to successfully complete site gradingactivities. 5 Report of Stibm&GO Exploration,and GeotcAnical Enginomrin$Analysis Midway Road.Shoppilig Centcr Midway,North Carolinn ECS Project No.:22.13740 5.0 ANALYSIS AND RWOMMMDATIONS The r000mmendations provided in this report are: based upon our understandffig of the proposed construction,.the information provided to..us during 0* study.4nd'our past experience WA similar conditions. Should any of the inforrnation provided:to us be changed prior to final design,EICS shouldbe notified to review those recommendations-and make.appropfiato revia"on' s,if 00000y. 5A Construction Dewatain De excavations the .I pending on final site::grades,.the sito.w. ill require d"atering for mass excavation .below water table. A series of well pofiWsystom will likely'be required to Mtw down the-wato:tolo arid. Wow for constmedon. 5.2 E,xcavation Conditions Before excavation oporati-ions begin, ft:water., tablo, will require to be lowered as mentioned in the previous section. We:have assumed that excavations for the dotadw.pond win be approx finately 10:to is feet below grade, We recommend budPieting for schedule delays and additional costs aspoci4ted difficult excavation due to the site dewatering in the:areas of proposed deep site cuts. The site soils are OSHA Typo B and C soils for the purpose of temporafy ozoavatian suppott. We recommend that permanent out slopes through undisturipod residual soils be constructed at M (horizontal.,vertical)or flatter. Pernianont fill slopes may be condmoted using compacted onwfito soils:it a slope of 11 or flatter. A slope of 3:1 or flatter may be desirable to p0mit establishment of vegetation, safe mowing, and maintatmoo. The surface of all cut and fill slopes shotild be adequately compacted, All permanent slopes should be protected.using vogo.tation.oroftw. moom to prevent erosion. 5.3 Subi!mde:Preyar The first step in.pre paring the site for the proposed popatruotion should be to ftrAov9 all vewation': roatmat, topsoil, deleterious materials,. and any other.soft or unsuitsible materials from thevxfsting ground surface. These operations should extend at least 10 foot, where possible, beyond the planned lints of the propoSed.construction. After proper clearing,. aWpping,.vubbing, and prfor to fill P:lacc=it. foundation, slab, or roadway construction, the exposed idbgri& soils should ho aftfuily evaluated by:an experiencedgeoteelinical tarl engineer to identify any.loca.Pzed unstable or otherwise unsuitable ma ter evaluating the exposed soils,loose and yielding arm should be IdoWfled by p6did1ling tine-exposed subgrada,-if site and subsurface conditions allow, with an approve.d piece. of eqOpment, such a6 a loaded dump:txucic having a &*a-axto woot of at lomat 10:tons. Any soft or umit.Pble materials Identified during proofrolling operations be either. repaired.in place or removed and repwpd with an approved bookfill placed andsoompaoted in accordance with recommendations of this report. Undercutting of 3.5 feet:of soil may be required atthe BMW relocation.areq. Report of Subsurface Explointion and Geoteolmical Engineering Analysis Midway Road Shopping Center Midway,North Carolina ECS Project No.:22.13740 Site subgrade conditions will be significantly influIOAc04€by we d"' '00� r s• gtada W AM` evaluated after periods of rainfall will not respond as woo to:pt ft' dl In as-SubpadO tit are Ova usted' after periods of more.favorable weather. We stroj oy]r b 't!al tt betutod' if subgrade conditions exhibit elevated moisture 'Condi,90134 'f ' 461M slX44 we try, equipment to minimize the degradation of marginally stable subgrade; The preparation of fill subgrades, as vMl as.p p� b�snbgi o be �r time basis by:a representative of ECS. These observations should be performed by an experienced geoteohnical engineer, or his representative, to ensure that all unsuitable materials have been removed and that the prepared,subgrade,is suitable for support of the proposed construction and/or fills. 5.4 E nainegreg Till Placement Following the removal of deleterious surface and subsurface materials, and after achieving a stable. subgrade,.engineered fills can be placed and compacted to achieve the desired site grades All fill for support of the proposed construction avid for backfll of utility lines within expanded building and 33vertirt bits shcatld cat Af .�a�l of pij�a..inatk and c! cad. greater than 'inches; and l�avc. LAgWJ I t.( }:ate Pl sib � s n 4i?i d A,, rasp ively, t $alp rem that add.fills within s m^W a"hnve..a ata d Pructar.(.AMM D. dry 400* td list 110 pour&per•Cubic foot(pcf). Unsuitable fill materials include topsoil,: materiels(0 OL),and high plasticity clays and silts . _ (CH, MIl). All such materials ieimoved clurnxlg "..,.. operations should be either stockpiled for later use in landscape fills,:or placed in approved on; q Wsit6 disposal.areas• Existing soils containing significant amounts of organic matter will not be suitable for re-usee as engineered fill. As such,the organic content of tl*near surface cultivated soils should be evaluated to determine if some of these soils will be suitable for r64 as Natural fine-grained soils classified as clays or silts (CL, MW with LL.and &W 0 2a., respectively, should be evaluated by the.geoteehnical engineer at the trine of 0"stttu 0*t.*&W-ohie.their suitability for use as engineered fill. Prior to the commencement of fill operations and/or utilization of any Off site borrow materials, the no"i rr.9=0 IOWA&rPit` .U"' m cif thed d � > '• tahriiil tli aa�1's �b#lii fcrosr etd #Ttl[ de lcrp rolafis + thelei► Sl _ ld be ter rlae tid A.. ul lit .tic 5. their lei tlae Add to allow for the appropriate laboratory testing to be pft-ft=bd Fill materials placed within the building and pavement areas should be placed in lifts not exceeding:I inches in loose lift thickness and moisture conditioned to within their working range of Optimum moisture content. The fills should then be compacted to a minimum of 93 percent o the soil's>standard Proctor(ASTM D 698)maximum dry density tt3 vvlthitt l fiteh bei► . 12 inches of fills placed beneath structural devebepwAtlt sl iuid df. sus standard Proctor maximum dry density. The typicdd . 1 tl Coastal Plain soils at the site is expected to be whim#APPMdoWay 3-17t content. Care should also be taken to provide a SM(.:)^W*`�lo� and 'at end of eact�i day's earthwork activities to help reduce the potential for V'Mftg MW 44tt Of t600 were, Report of Subsuriko ftloration and Geotechnical BnSIn6erh)9-AhjtIyd9 Midway Road Shopping.0miter Midway,North Carolina ECS PrQject No.:22.13740 Gradozontrols should also be maintained throughout the filling operations. All filling operations should be observed on a ful-1-fiffie basis by a qualified repiwontative of ECS to detaimine.1hat the required dogt.e66 of compactionI are being aclileve d'. We recommend.that amminimum Oftnozompaction-test per ­ 2,000-square-foot area be performed:for:each lift of controlled AJI. The elevation and location of the tests should be clearly identified at the Ulm of fill Placement. Anas.whirh:-*il to.ao-Weve tho.reqvired --degree ofcompaodw'sbDUld be re-worlod until the:!*6dfIad::dc9M-.of compActionis:achieved. Adlin or :er: g test areas may require moisture adjustments of other III: to iW eve the required compaction. Fill maRtials should not bo placed on.frozen; frost-Imaved, mWor soils which have been. mqqt4 subjected to precipitation. All wet dr-frozen soils should be removed prjor to the.cot.2timanfloh:of sIto grading and fill placement. Borrow fill materials, if required, should not contain excessively wet or frozen materials at the time of placement. .Additionally, if grading operations occur during the winter months, all frost-heaved soils should be removed prior to placement of engineered fill,granular sub-base materials,foundation or-slab concrete,and-aspbalt pavemoat:aw mials. If problem are encountewd during:the,site grading operations, or if the actual site conditions differ from those encountered during our subsurface exploration, the geotechnical engineer should be notified immediately. 5#5:FowW&*ns ommendatloats I Provided the sub de preparation and earthwork operations are completed:in strict accordance with the recommendations of this.report, the proposed BEMC construction can be supported on conventional shallow foundations bowing on approved natural materials muVor properly compacted fill. We recommend a net allowable design soil bearing pressure of 2,000 psf for proportioning continuous and isolated column footings. Undercutting of the upper 3.5 feet of soil should be anticipated and:verlfied in the field during the prooftolling and foundation evaluation operations. To reduce the possibility of foundation bearing failure and excessive settlement due to local, shear or "punching!i failures, we recommod that continuous footings:have a minimum width of to inches and that Isoldod.column footings have a minimum lateral dimension of 30 inches. Furthermore,all footings should beer at a depth to provide adequate frost cover protection. For this region, we recommend the bearing elevation be a minimtma depth of 12 inches below the finished exterior grade:or in accordance with die local building code requirements. We request the opportunity to review our foundation recannnendations and make:any. necoasary:changes once structural loads.and.sitc:dosig gradesared4eindned. go The net allowable soil bearing pressmv refers to that pressure which may bo:traasmitted to the foundation bearing soils In excess of the final minimum suriounding, overburden pressure. The final fooling elevation should be evaluated by ECS personnel to verify that the bearing soils am capable of supporting the recommended not allowable bearing pressure and wit.ablo for foundation construction These evaluations should ineludo visual observations,hand rod probing, and dynamic, cone penetrometer (AS7M STP 599)testing,or other methods deemed appropriate by the gootednicai engineer at the time of construction,in each column footing excavation and at intervals not greater than 20 feet in continuous footing exmvations. 1. If plastic clay(P>20)is encountered below the footing,we recommend the clay be over-axosivated by adepth of at least two Zbot below the footing.and-approved back ffil material dwuld be. placed in t he footing to provide a two foot separation between the bottom of footing and the plosde,clay layw. Report of Subsurface Exploration and Geotechnical Engineering Analysis Midway Road Shopping Center Midway,North Carolina ECS Project No.;22.13740 The settlement of a structure is a function of the compressibility of the bearing materials, bearing pressure;actual structural loads,fill depths,and the bearing elevation of footings with respect to the final ground surface elevation, Estimates of settlement for foundations bearing on. engineered or non- engineered fills are strongly dependent.on the-quality of fill placed. Factors which may affect the quality Of fill include Yxiaximuii:loose.lift thickness of:the fills placed and the amount of coinpactive effort :_ — _ Acid ]�Ii each i t: Prayer the t� dates ou t ln. f e expect that total settlements for the proposed construction are expected to be in the range of 1 inch:or less, while the,differential settlement will be approximately % of the anticipated total settlement. This evaluation is based on our engineering experience:and assumed structural loadings for this type of structure,and is intended to aid the structural engineer with lus design. 5.6 E onr Slab Design Provide a suitable subgrade will be prepared as recommended herein, ground level slabs for the maintenance buildings ran be designed as slabs-on grade. Our findings indicate that .a modulus of subgrade reaction (isa} of 100 poi is appropriate for design provided that upper 12 inches.of the slab subgrade soils_have been uniformly compacted to at least.98 percent of their standard.Pro.rtor maximum dry density. We recommend that all slabs-on-grade.be isolated from the foundations so that potential differential settlement of the structure will not induce shear stresses in the floor slab. Also, to minimize the crack width of any shrinkage cracks that may develop:near the surface:of the slab; wire mesh reinforcement may be included in the slab design. The mesh should be located in the top third of;the slab to be effective. We also recommend that all slabs-on-grade be underlain.by a minimum of inches of clean.granular fill with less than 3 percerit f%nes by weight to help provem the capillary rise of subsurface.moisture from adversely affecting the slab. If floor covering-such as the or carpet:will be utilized for interior finishes,a polyethylene vapor barrier may be used beneath the floor slab for.moisture control considerations. 5.7`Site Draiinaee Positive drainage should be provided around the perimeter of Ihe structure to minimize the potential for moisture infiltration into the fbundatiou and slab subgrade soils. We recommend that landscaped.areas adjacent to these structures be sloped away from the construction and maintain a fail of at least.6 inches for the first 10 feet.outward fl"om.the structures: The parlaixg lots,sidewalks,and any..othe paved areas should also be sloped`to divert surface water awayf coin tho:proposed building. The proper diversion of surface water during site grading and construction will help reduce the potential for delays associated with periods of inclement weather. The proper diversion. of surface water is especially critical since portions of the site soils:are expected to be moisture sensitive. Based upon our past experience,the use of"crowning"large areas of exposed soils should.be useful.to help divert:surface water from the prepared subgrades. y Please note that the need for construction dewatering should be determined at the time of construction. If grading operations are performed during the wet seasons (i.e. fall and winter) the use:of gravity flow is ditches may be necessary to divert precipitation and surface water:awa tion areas y fro the construc • I#: Re.port of StadExploftofi end EnkinWinj Analysis Midway Road Shopping Center Midway,North Carolina ECSProjodNo.:22.13740 Sig:COnstraction Consl§MI[ons Exposure to the environment may weaken.the soils at the foundation bearing.elevation if the%unda. tio.0 excavations remain exposed during periods:of inclement weather. Them bre,foundation concrete should and thadesign,bearing-pressure verified If the beafiiAsre sgfiened.by star se VAOWgbinii ptatnt eqww.to tho tic WU must:be removed from the fcmdaii6mcxcavation-bottom immediately. prior to placement:of conercte, if the excavation must remalft open overnight,or:if inclement weather becomes iminhient while the bearing soils are exposed, we recomniatid that.9 1.to 3:iwh thick"mud-me' of"lean"coner.de be placed.over die exposed bearing soils before the pl9coniefit of raWbroing steel. It is imperative to maintain good site drainage during earthwork operations to help maintain the integrity of the surface soils. The surface of the site should be kept properly graded to enhance drainage of surface water away from the proposed.construction areas during the earthwork phase of this project. We recommend that awfhoe drainage be diverted away from the proposed building and pavements areas without significantly interrupting its flow. Other practices would involve sealing the exposed soils daily with a smooth-drum roller at the end of the day's work to reduce the potential for infiltration of surface water into the exposed soils. The key to minimizing disturbance problems with the soils is to have proper control of the earthwork operations. Specifically,it should be the earthwork contractor's responsibility to maintain the site soils within a workable moisture content range to obtain the required in-place density and maintain a stable subgrade. Scarifying and drying operations should be included in the contractor's price and not be considered an extra to the contract, In addition,constriction equipment cannot be permitted to randomly run across the site, especially once the desired final grades have been established. Construction equipment should be limited to designated lanes slid areas, especially during wet periods to minimize disturbance of the site subgtades. It will likely be.nemsary to utilize tracked equipment during grading operations particularly if the,gubgrade soils exhibit elevated moisture conditions. 10 Report of Subsurface Exploration and Geotechnical Engineering Analysis Midway Road Shopping Center Midway,North Carolina ECS Project No.:22.13740 6.0 CLOSING our geotechnical evaluation of the site has been based on our understanding of the site, the project information provided to us, and -the data obtained during our exploration. The general subsurface conditions utilized in our evaluations have been based on interpolation.of subsurface data between the borings. . If.the project information provided to us is change. ed, please contact us so that our _.::_ .0n{�ill' .e�n•�L�.Ce�i�a .ap��ts x'et+isi'1s v�: �f'riee�sa�. 'lv`he dr� � any site or subsurface conditions during:conatruetion which deviate fi.om the data outlined in this exploration should be reported to us for our evaluation. The assesanent of site.envi omnental conditions. for the presence of pollutants in the soil and :groundwater of the site was beyond the.scope of this geotechnical exploration. 1 4 f. l t I - _. f � • _• ,,,, a�.• Vim. �� �- �� ��• �.;- _ ��; � `,fit.. ul •� ILL 0 �-�. .s�, 1 r,��"?� �� �•j. r.!''� 5.• �. �� �- •�� �� a �"J�� ��, : �� �. ri. y��y"'YY.7uF°' g _ •_ate - y.=` �r v;. "'.�"[ i „s ..-. ? � IMJs F -e .09 i� iiis i f i .. is Q W ti r_ C. adAI UOIAVHgg x � -TIOS 04 "A I �" y� N O . .—L � � - _ c a R y. IL 1115 �cq N M 1-I1.dg(] m IK 0 ...... ------ to LU 777�- - — 11Q:e _ Q 1 � cr 42 I { U o e r — 44no.- It Q Ma — --- I - 41 - - M l rud3a . r .. .. r,.. pp >n ... �,..,�.....:.,::. �:.o:.. ..,_:_. ate......_ ..,..� '....... ;,_.., ,. e - - 120. I ad)a IIOIAVH39 IIQS IWO At im Pri CIA 'D I .. .. - N . � J W OI +w r .__.� ram' w. 7v t In � � I CL I: I + m , l = _ p�a Hid-30 ....... i Y l � 1 Z • 3d ki �-- NOIAVH38 Too q . .. �' 0 tr { ; - �� - ' sx 6 to .A.. 7 CL 13 A ' - - .- -ton -- . a � .r ...... Hld3❑ ■` Re:Two-Eldven Midway(DWQ Permit No. SW8 070935) Subject:Re:Two-Eleven Midway(DWQ Permit No.SW8 070935) From:Christine Nelson<Christine.Nelson@ncmail.net> Date:Thu, 13 Nov 2008 15:43:00-0500 To:Lisa Thomas<LThomas@withersravenel.com> CC:Janet Russell<Janet.Russell@ncmail.net> Lisa, Is Mr.Henderson the VP for MDI Management,Inc? Our rules require a person of at least the VP level to be the applicant and permittee. To verify this,we use the NC Secretary of State's corporation database. If Mr.Henderson is not listed as the VP with the Secretary or State,other official documentation from the Inc must be provided supporting his position as VP. If he is not the VP,then a notarized letter from the VP or Pres.needs to be submitted with the application authorizing Mr.Henderson to sign on their behalf. However the modified permit will be written to the person who signed the letter of authorization and this person should be listed on the first page of the application. I hope this helps. Christine Lisa Thomas wrote: Christine: We have an express submittal setup with you on November 20,2008 for the modification to the project entitled,Two-Eleven Midway(SW8 070935). In the email sent from Janet she indicated that either the President or Vice President of MDI Management,Inc.needs to sign all the required permit applications. Attached is a PDF of the original approved State Stormwater Permit for this project and Roger Henderson,VP Real Estate and Representative,was the signing official for all the permit applications that were previously approved for this project. He is also going to be the signing official for the modification that we will be submitting on Thursday of next week. Please let me know if there is any additional documentation that is required in this particular situation. Thank you. ,IBA THONAS, E.I. WITHERS i�C RAVENEL f�miormnoeareahh Drtva,tRNt.mr ffim,R C.A*3 td 9m 256.92771 1"9.0.254 7534 wwwAthemrayenekam tia^.T ICE OFCGV',D 4%X_Ii:*M Md NB SGOSllfiE this elettonic nnlssage,wfpth inciudes any afllachnnents and other docunenls velened to herein,contains infemration from Wittws li, Rmenel,irn.that may be legally p"leged and coo0denllel.The information is intended fin the use of the addessec(s)only.if you are trot the addressee,notemany rSsclowrc,copying,pdnlir,g,distribution,orusc oflM cxrlents otthis message is prohibited.hfym received Ihis massage in cox,please advise the sender by reply and delete this electronic messes and any allachmcots. COffM111I 11DTICE.Copyright 100 try Wphem&Ravem,Inc.AM Rights Reserved byWilhers 11 Ravend,Inc.This naRec applies la Ihiselecaorric message,adauachnrrents dwelm andalldocmrretlsr*rml totheiefa.This ekclronitnessage,atry alWthtaents thereto aml all dotaareatsrefened to therein aiethe pmprletary peopertyd Withers 6 Ravenel,lM.This electronic message,arty attachments theitto and all dowmenlsreferted b(toxin areprodtled for the recipleal's infamriion anlf,and no rights ate liam. leered try the twnsmissioa d thfstkclronic aresaaltie by Wihers&RmrereB,int.wa ceiptaf thismeaagc by the recipient or any other party- 1 of 1 11/13/2008 4:00 PM RE: Two-Eleven Midway Subject:RE:Two-Eleven Midway From:Lisa Thomas<LThomas@withersravenel.com> Date:Thu, 13 Nov 2008 14:36:06-0500 To:"'Janet Russell"'<Janet.Russell@ncmail.net> Janet: We would like to reserve the scheduled meeting time of 1:30 p.m. on November 20, 2008 for the Express Sto rmwater submittal meeting for the modification to Two-Eleven Midway. Lisa J. Thomas, E.I. Withers & Ravenel -----Original Message----- From: Janet Russell [mailto:Janet.Russell@ncmail.net] Sent: Thursday, November 13, 2008 11:24 AM To: Lisa Thomas; rhenderson@axexlee.com Subject: Two-Eleven Midway November 13, 2008 *TWO-ELEVBN MIDWAY* The Express Stormwater submittal meeting for the modification to Two-Eleven Midway has been scheduled with *Christine Nelson on November 20, 2008 at 1:30* here in the Wilmington Regional Office, 127 Cardinal Drive Ext., Wilmington 28405. The applicant or an assistant must attend the meeting or be available by conference call during the meeting. Please note that the President or Vice President of the Corporation is required to sign the application document(s). The Secretary of State web site lists Boyd George and Michael Green as the President and Vice President. Please email Christine (christine.nelson@ncmail.net) if you have a question about the required signature on the stormwater application. Review the submittal requirements attached. Please note that we prefer the plans to be submitted folded to fit our files, 9"xl4". *Please respond_ within 2 business days to reserve and confirm the submittal meeting date/time. Thanks­ Janet Janet Russell Express Coordinator 1 of 1 11/13/2008 4:00 PM RE:Two-Eleven Midway Subject:RE:Two-Eleven Midway From:Lisa Thomas<LThomas@withersravenel.com> Date:Thu, 13 Nov 2008 08:36:42-0500 To:"'Janet Russell"'<Janet.Russell@ncmail.net> Janet: We can do anytime on Thursday, November 20th or two Mondays from now on November 24th. Lisa J. Thomas, E.I. Withers & Ravenel -----Original Message----- From: Janet Russell [mailto:Janet.Russell@ncmail.net] Sent: Wednesday, November 12, 2008 2:28 PM To: Lisa Thomas Subject: Two-Eleven Midway Lisa: We are in receipt of the Express Request for Two-Eleven Midway. Please send me 3 or 4 days & times that you and your applicant are available to meet for the submittal meeting. We can probably get you in next week but go ahead and give me a couple of days next week and a couple the following week (excluding the 27 and 28th). Normally the reviewers do not like to have meetings on Friday since that is their catch-up day. Thanks, Janet 1 of 1 11/13/2008 9:57 AM For DENR Use ONLY Reviewer:—CIV North Carolina Department of Environment and 1 Submit: 1 2� _ Natural Resources ,30 NCDENR Request for Express Permit Review Time: l Confirm: FILL-IN all the information below and CHECK the Permits)you are requesting for express review. FAX or Email the completed form to Express Coordinator along with a completed DETAILED narrative,site plan(PDF file)and vicinity man(same items exg_ecied in the application package of the project location.Please include this form in the application package • Asheville Region-Alison Davidson 828-2964698;alison.davidsonbncmail.net • Fayetteville or Raleigh Region-David Lee 919-791.4203;daZK.1q@ftcmai1.net • Mooresville&-Patrick Grogan 704-663-3772 or aMck groglaacmail net • Washington Region-Lyn Hardison 252-946-9215 or lyn.hardisoaftcmail net • Wilmington Region-Janet Russell 910-350-2004 or janetrussefiftilcmall.net NOTE.Project application received after 12 noon will be stamped in the following work day. Project Name: TWO-ELEVEN MIDWAY County: BRUNSWICK �k- VN1 N V-y fm1, Applicant: ROGER HENDERSON,VP REAL ESTATE&REPRESENTATIVE Company: MDI MANAdEMENT.INC. Address: 1381 OLD MILL CIRCLE,SUITE 200 City: WINSTON-SALEM,State: NC Zip:27114- Phone:336-775-3005 Fax::336-659-2434 Email:rhenderson@alexlee.com Physical Location:THE NORTHWEST CORNER OF THE INTERSECTION OF MIDWAY ROAD SE AND NC HWY 211 Project Drains into RIVER SWAMP waters—Water classification C:SW (for classification see-hftp://h2o.enr.state.nc.us/bimstrepgrts/repgrtsWB.htmi) Project Located in LUMBER River Basin.Is project draining to class ORW waters?N,within%mile and draining to class SA waters N or within 1 mile and draining to class HQW waters?N Engineer/Consultant:_ LISA J.THOMAS,E.I. Company: WITHERS&RAVENEL Address: 1410 COMMONWEALTH DRIVE.SUITE 101 1 City:WILMINGTON,State:NC Zip 28403 Phone:910-256-9277 Fax::910-256-2584 Email:lthomas@withersravenel.com SECTION ONE: REQUESTING A SCOPING MEETING ONLY ❑Scoping Meeting ONLY❑ DWQ,❑ DCM,-❑DLR,❑ OTHER: SECTION TWO: CHECK ONLY THE PROGRAM(S)YOU ARE REQUESTING FOR EXPRESS PERMITTING ❑401 Unit ❑Stream Origin Determination:_#of stream calls—Please attach TOPO map marking the areas in questions ❑ IntermittentiPerennial Determination:_#of stream calls—Please attach TOPO map marking the areas in questions ❑401 Water Quality Certification ❑ Isolated Wetland(linear ft or_acres) ❑ Riparian Buffer Authorization ❑Minor Variance❑ Major General Variance ®State Stormwater ❑General ❑SFR, ❑Bkhd&Bt Rmp,❑ Clear&Grub, ❑ Utility ❑ Low Density ❑ Low Density-Curb&Gutter _#Curb Outlet Swales ❑ Off-site[SW (Provide permit#)] ❑ High Density-Detention Pond _#Treatment Systems ❑ High Density-Infiltration _#Treatment Systems ❑High Density-Bio-Retention _#Treatment Systems ❑ High Density—Stormwater Wetlands _#Treatment Systems ®High Density-Other 1#Treatment Systems i® MODIFICATION: E Major ❑ Minor ❑Revision SW 935(Provide permir#) ❑Coastal Management ❑Excavation&Fill ❑ Bridges&Culverts ❑Structures Information ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront ❑Land Quality ❑ Erosion and Sedimentation Control Plan with acres to be disturbed.(CK# (for DENR use)) SECTION THREE—.PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT(for both scoping and express meeting request) Wetlands on Site®Yes❑ No Buffer Impacts:® No❑YES: acre(s) Wetlands Delineation has been completed:®Yes❑No Isolated wetland on Property❑Yes® No US ACOE Approval of Delineation completed:®Yes❑No 404 Application in Process w/US ACOE: ®Yes ❑ No Permit Received from US ACOE®Yes❑No For DENR use only Fee Split for multiple permits: Check# 1 Total Fee Amount S �— SUBMITTAL DNI ES I Fee I SUBiMiTTAL DATER Fee CAMA I $ I Variance(LI Maj;Lj Min) 1 $ SW( HD, LD,El Gen) l - $ iTt UOv 401: $ Li3S $ Stream Deter,_ $ NCDENR EXPRESS September 2008 TWO-ELEVEN MIDWAY SW8 070935 STORMWATER NARRATIVE Two-Eleven Midway is a proposed high density commercial development located at the northwest corner of the intersection of Southport-Supply Road, US Hwy 211 and Midway Road SE in Brunswick County,North Carolina. The project area is comprised of four(4) separate tracts that total 39.91 acres. Listed below is parcel data for each tract: Parcel No. Area(acres) Existing Wetlands Proposed Permanent (acres) Impacts(acres) 2030001601 3.90 0.39 0.00 2030001301 29.11 1.25 (wetlands) 0.09 (wetlands) 0.29 (stream) 0.10 (stream) 2030001304 5.64 0.11 0.11 20300015 1.00 NONE NONE The original State Stormwater Permit Application No. SW8 070935 was issued on April 17, 2008 and prepared by Kimley-Horn and Associates, Inc. The owner has now contracted with Withers &Ravenel to redesign the site layout. This redesign resulted in changes that included realigning the Lowes Foods building to run parallel with Midway Road and eliminating the Phase II outparcel. However the total impervious area decreased and the stormwater control system remained the same, as three interconnected extended detention wetlands that operate as a single unit. Below is a summary of the old and new calculations for the property: Old Layout New Layout Total Site Area 39.91 acres 39.91 acres Drainage Area 39.47 acres 39.47 acres Proposed Impervious 27.92 acres 26.12 acres %Impervious Area(total) 71% 66% Therefore by either maintaining or reducing the site areas, drainage areas, and impervious areas, the proposed stormwater wetlands remain the same as previously permitted under State Stormwater Permit No. SW8 070935. E C 1 V pill, DIMS PF'GJ 4 q} s�. N SI TE TO tC 2> S 1,7 W E ro s So(jTHPOR7. VICINITY MAP (N. T. S.) TWO-ELEVEN MIDWAY SW8 070935 REQUEST FOR EXPRESS PERMIT REVIEW NOVEMBER 11, 2008 Express Submittal Request-Two-Eleven Midway Subject:Express Submittal Request-Two-Eleven Midway From:Lisa Thomas<LThomas@withersravenel.com> Date:Tue,11 Nov 2008 14:19:29-0500 To:"Janet Russell(Janet.Russell@ncrnail.net)"GTanet.Russell@ncmail.net> Janet: We would like to formally request an express submitte!date for the state stormwater modificabo:to the Tyro-Eleven Midway project(SW8 070935). Attached are PDFs of all the required documentation. Please contact me if you have any questions. Thank you. t, ,,.:. _..i, WITHER/ - RAVENEL 14v C=rnax:eade 11"lva,Brit t*l N C.2803 W.-9+.15&32771 fu gto.:5e sEty www.withetsravenel.com KQ M. 0FCOI RDEN?MUN AlkD 11i0ti01SC1,0SUBE this ek-twuLk=mse,whit!:ix!udes aryatiachments cad e!turdscan:Nnts re&"ed to item,o"Wa5 Wamorng fmm Within$ Rarme:,IRc.ttrat:Ilay h0legal!y Fli'itieged and tuniieeitlai.7^c in-^rifati:;i iY ti!Ciced fu't!,e usi nr!:Te zjdltl5,-e }mty.li',Ru am nx the a�drrssce,;W!¢tlwl any disdnsre,copying.prir!irg.:tistAha!fott,a use e'.4ce mn?ct,!s nt!h45 message Ys a:�fubit¢3.!f Ymt mcei,v4!hismessage in a j%pkase advise ire xnderbyrey%;aed Cetw U:!sekctrx!c-a¢ssage and awl attachtn¢ats COPYRtfiFei MAr;C'e:Cnsle:gtt!av03:,V:i!i,eq&R:.vtxf,{"=.All Meas Reserjec L,;'Wzthtrs&ft.ta¢!,ine.this t:aUc¢applies to !�tseiec!rork mtssxge,at!aCat>:.:,enis!here!o,¢:�d aft dot�.'tr•¢n:s re`eaeJ to-tl.[n•!n,this tketlrt»!c tnt,sage,airy atachments thmio aad all 6w.unxrts zferrt•G to tnwei n a e tte Inc this ekc:mnic message•aw attachmentstimeto and ail aaeUmett!sttkmdathertow,pmt" fortcer¢cip!en"stnfdaaatianand,andnorightsam!rans kfwd try the tiansmisstsn 3i thisefettrunt menage try NAkhias&ir4rcr..:nt.of mtkipt of this message uy the recipient or airf ogicr patty. FConttent-Description:C4_Overall Site Plan_110708.pdf C4_Overall Site Plan_110708.pdfnt-Type: application/pdf nt-Encoding: base64 Content-Description:Express Request.pdf Express Request.pdf Content-Type: application/pdf j Content-Encoding: base64 Content-Description:Express Stormwater Nairative.pdf Express Stormwater Narrative.pdf Content-Type: application/pdf Content-Encoding: base64 i Content-Description:Express Vicinity Map.pdf :Express Vicinity Map.pdf'Content-Type: application/pdf Content-Encoding: base64 1 of 1 11/12/2008 10:14 AM sms�mw 0' J nau.nr l r�rl ry l+nnu+. sue rsa rviwm ns NV1d 311$ Aymam r ri•uewoiinm ww 1aN3AVl1 QSI9FIlIM rooaa3arana 11d213A0 N3A313-OAkL �0 +N Y oil itIlia e I M 0 ... .............. ' a 1$ j I pj iE i i 7y i!FI—I i—al 9Y i p ^ '� ty I A t I l i I , A �p I I I II—FI Fi 1 i I Y •`.` I I aah i i i i / I Ii i l crl I / ? E J 'e' it SOSID: 0089614 Date Filed: 12/27/2000 4:18 PM Elaine F. Marshall CD-479 (40) North Carolina Annual Repc North Carolina Secretary of State j 1 0-W For Business Corporation: 2000 362 33509 Name of Corporation: ;SDI MANAGEMENT, INC. State of Incorporation:NORTH CAROLINA Secretary of ftte Corp.ID Number: 0089614 Fiscal Year Ending: 0 9-3 0-2 0 0 0 Month I Day I Year Federal Employer ID Number: Check here if information has not changed since most recently filed Annual Report,complete line a only,.y 13 1.Registered agent&registered office mailing address Agent:BOYD L. GEORGE Mailing Address: P.O. BOX 800 HICKORY, NC 28603 2.Street address&county of registered office strest Address: 120 4 TH STREET, SW HICKORY, NC 28602 County: CATAWBA 3.If registered agent changed,signature of new agent: (signature congwas oomsnt to appok.b.-0 4.Enter principal office address here: 120 4 TH STREET, SW HICKORY, NC 28602 5.Enter principal office telephone number here: (8 2 8) 3 2 3-410 0 6.Enter name,title and business address of principal officers here: Name: BOYD L. GEORGE Title: PRE . Address: P.O. BOX 800 City: HICKORY state: HC Zip: 28603 t Name: MICHAEL J. GREENE ride: VICE-PRES . Address: P.O. BOX 800 t city: HICKORY state: NC ztp; 29603 Name: RONALD W. KNEDLIK 'rode; TRES/SEC. Address: P.O. BOX 800 City: HICKORY state: NC zip: 28603 7.Briefly describe the nature of business: REAL ESTATE LEASING S.Certification of annual report must be completed by all corporations /1a-W artrj2- NAME i' 77E.E: �...�.-/�✓,�..� _ /i.�-dam 903e35 2.000 SIGNATURE:(Form must he signed by after of corporation) DATE: DF6216 2175 11/27/2000 11:20 :23 V9.09.01 51 t8 CD- 9(asl Business Corporation Alp at 1606ito1pt -()Is tate Aacbe of Business Corporation: MDI MANAGEMENT, INC a � •flop all Yeaf Ending: 0,9 30 06 6tate of lncorp0ation: NORTH CAROLININ Month!Day!Year , Bret ,ot&to iA Number: 0089614 kder$I Employer ID Number f'rivacyRedactlon Of ad • 'R@'glstei �ent: R$ d 4' ailing a dress: •'PO`-B'OX• 8b 0 City: State: ..s �:. HICBORY, NC 2'8602 ��gysta�ed�.0�'de.•S�re��ejj Address: 4 t�• M0 4TI -STRE'ET SW City: State: HICKgRY, NC :28602 - 'glrtiture of f ow Rbgistered Agent: ' (signature."- !step caosent to the appoinerm q f'FihilpV Bice Telepgoft Number: 828-725-4*494 •. dill 0*e-Mailjgg Address: � .13a* :BOX 800 lr' City: State: rhg: HICKORY, NC 2.86x0.2 # 'Piaibal Office S>:reet Address: r LIe� 120 4TH STREET SW j City: :•State: HIC-XORY, NC 28602 Ple' rf d i ess Ad rinoi al'officeig' We. `� Gfs ETitle.&-O. BOX 800 :. •XYCKORY, NC 2860.3 fr' : State Zi ' '1e':rM CHXEL J. GREENE " Titiec SCE PUSIDE'NT $.ad-ress:, P.O. BOX 8.00 , `H•I,0KORY, WC 2 840�- gi State Zip: �larrief D' W: XEN6VjiC ` Title: SIECRE: 4(rress: BQX > 0 HICKORY ,2.8603 t Sta a Zip: a tioa0bri of-annual repottfiting cbmpfeted bq aftPusitpss corp'orations). Signature(Form must be signed by an officer of corporation) Date .56t;51 t/11-03-05. Type ar Piro N*ne _ .�I..r'�ry.e�l�SS�}S�"'. ..•. 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