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HomeMy WebLinkAboutSW7110608_CURRENT PERMIT_20110804STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ .COMPLIANCE EVALUATION INSPECTION DOC DATE�l�QG�f YYYYMMDD w� NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary Mr. Alan F. Scott Alderbrook Pointe, LP 5309 Transportation Boulevard Cleveland, OH 44125 Subject: Stormwater Permit No. SW7110618 Alderbrook Pointe Multi -Family Housing High Density Commercial Wet Pond Project Beaufort County Dear Mr. Scott: The Washington Regional Office received a complete Stormwater Management Permit Application for Alderbrook Pointe Multi -Family Housing development on June 28, 2011. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Session Law 2008-211 and Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7110618 dated August 4, 2011, for the construction of the subject project. This permit shall be effective from the date of issuance until August 4, 2021, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150E of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. 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 Samir Dumpor, or me at (252) 946-6481. ince el , AI odg Regional Supervisor Surface Water Protection Section AH/ sd: K:\WQS\STORMWATER\SD\SW7110618 North Carolina Division of Water Quality Internet: www,ncwatcrgualitv.orc 943 Washington Square Mall Phone: 252-946-6481 Washington, NC 27889 PAX 252-946-9215 An Equal Opporlunity/ARrmative Action Employer— 50% Reeycled110% Post Consumer Paper None rthCarolina Naturalk Page 2 of 2 cc: Steven Rice, PE, Rice & Associates, PLLC (133 28516) Richard Bailey, Jr. NRP Alderbrook Pointe, LLC, #100, Raleigh, NC 27615) Beaufort County Building Inspections Washington Regional Office Lockhart Drive, Beaufort, NC (8450 Falls of neuse Road, State Stormwater Management Systems Permit No. SW7110618 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Alderbrook Pointe, LP Alderbrook Pointe Multi -Family Housing Beaufort County FOR THE construction, operation and maintenance of one wet detention pond in compliance with the provisions of Session Law 2008-211 and 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until August 4, 2021, and shall be subject to the following specified conditions and limitations: 1. 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 of this permit. The stormwater control has been designed to handle the runoff from 184,476 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated in Section I. of this permit, and per approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 6. The built -upon areas associated with this project shall be located at least 50 feet landward of all perennial and intermittent surface waters. Page 2 of 7 State Stormwater Management Systems Permit No. SW7110618 7. The following design criteria have been provided in the wet detention pond and must be maintained at design condition: a. Drainage Area, ft2: 368,953 b. Total Impervious Surfaces, ft2: 184,476 C. Design Storm, inches: 1.5 d. Pond Depth - average, feet: 3.50 e. TSS removal efficiency: 90% f. Permanent Pool Elevation, FMSL: 8.00 g. Permanent Pool Surface Area required, ft2. 18,448 h. Permanent Pool Surface Area provided, ft2: 30,471 i. Min. Volume required, ft : 23,060 J Permitted Storage Volume, ft3: 23,516 k. Temporary Storage Elevation, FMSL: 8.70 I. Controlling Orifice: 2.50"0 pipe M. Permitted Forebay Volume, ft3: 21,911 n. Receiving Stream/River Basin: Cherru Run o. Stream Index Number: 28-103-17 P. Classification of Water Body: "C;Sw;NSW" II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all time provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and re -vegetation of slopes and the vegetated filter strip. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of outlet structure, orifice device, level spreader, filter strip, catch basins and piping. a. Access to the outlet structure must be available at all times. 4. Records of maintenance activities must be kept for each permitted BMP. The records will indicate the date, activity, name of person performing the work and what actions were taken. The permittee shall submit to the Division of Water Quality an annual summary report of the maintenance inspection records for each BMP. The report shall summarize the inspection dates, results of the inspections, and the maintenance work performed at each inspection. 6. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 7. The facilities shall be constructed as shown on the approved plans. This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other Page 3 of 7 State Stormwater Management Systems Permit No. SW7110618 supporting data. 8. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 9. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 10. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The 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. 11. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. 12. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 13. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a completed Name/Ownership Change form, to the Division of Water Quality, signed by both parties, and accompanied by supporting documentation as listed on page 2 of the form. The project must be in good standing with the Division. The approval of this request will be considered on its merits and may or may not be approved 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. 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 Page 4 of 7 State Stormwater Management Systems Permit No. SW7110618 accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 4. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 5. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 6. The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 7. The permit issued shall continue in force and effect until revoked or terminated. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 9. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2008- 211, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al. 11. The permittee shall notify the Division of any name, ownership or mailing address changes at least 30 days prior to making such changes. 12. This permit shall be effective from the date of issuance until August 4, 2021. Application for permit renewal shall be submitted 180 days prior to the expiration date of this permit and must be accompanied by the processing fee. Permit issued this the 4th day of August, 2011. NORTH.GAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION for Division of Water Quality By Authority of the Environmental Management Commission Stormwater Permit No. SW7110618 Page 5 of 7 State Stormwater Management Systems Permit No. SW7110618 Alderbrook Pointe Multi -Family Housing Stormwater Permit No. SW7110618 Beaufort County Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: Signature Registration Number Date SEAL Page 6 of 7 State Stormwater Management Systems Permit No. SW71 10618 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the 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, and a forebay. 15. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Washington Regional Office Beaufort County Building Inspections Page 7 of 7 State Stormwater Management Systems Permit No. SW7110618 Alderbrook Pointe Multi -Family Housing Stormwater Permit No. SW7110618 Beaufort County Designer's Certification C:P_A— iCV_A Lw #017� I, �O`N • Rlifoa+AA s a duly registered /, y. in the State of North Carolina, having been authorized to observe Tferiodically/ weekly/ full time) the construction of the project, UU (Project) for , Lj41erb1rdWk Pt(N+J. b•P (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: Signature Registration Number JK070 Date 4-1 Io 12 SEA 8293 AG Ntk F f�• ,��_ yif'J•., SEAL Q,•17'�Z RECEIVED APR 1 7 2012 Page 6 of 7 IN, i • Certification Requirements: State Stormwater Management Systems Permit No. SW7110618 V 1, 2 3 4. %00005. V#**06. V 7, y��12. 1/ 13. VO I004 V 15 The drainage area to the system contains approximately the permitted acreage. The drainage area to the system contains no more than the permitted amount of built -upon area. All the built -upon area associated with the project is graded such that the runoff drains to the system. All roof drains are located such that the runoff is directed into the system The outlet/bypass structure elevations are per the approved RECEIVED The outlet structure is located per the approved plans. Trash rack is provided on the outlet/bypass structure APR 17 2012 All slopes are grassed with permanent vegetation. ®��_�q�® Vegetated slopes are no steeper than 3:1. The inlets are located per the approved plans and do not cause short- circuiting of the system. The permitted amounts of surface area and/or volume have been provided. Required drawdown devices are correctly sized per the approved plans. All required design depths are provided. All required parts of the system are provided, such as a vegetated shelf, and a for bay. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Washington Regional Office Beaufort County Building Inspections Page 7 of 7 �pFESslp41 ve % EAL. .S2g3) Z P tqr M N- d1r, /%' /2i �11 -i it , , - 111 U. RICE& ASSOCIATES April 17, 2012 Mr. Scott Vinson SW Express Environmental Engineer Washington Regional Office NCDENR — Division of Water Quality 943 Washington Square Mall Washington, North Carolina 27889 Re: Alderbrook Pointe Multi -family Housing 7.55 Acre Parcel Out of Eskridge Crossing N. Pierce Street Extension — Washington, NC Stormwater Permit No. SW 7110618 High Density Commercial Wet Pond Project Beaufort County Dear Mr. Vinson: RECEIVED APR 17 2012 DWQ-WARD Per our telephone conversation yesterday I am providing a PARTIAL CERTIFICATION for the referenced Stormwater Management Permit. A copy of the permit is attached, including Page 6 of 7, The Designer's Certification, and Page 7 of 7, the Certification Requirements check list. This Partial Certification is provided to allow for the developer to obtain a certificate of occupancy for one of the six apartment buildings and the clubhouse. The Wet Detention Pond has been installed and adjacent areas have been graded to the proper slopes and stabilized. All of the design elements of pond, including surface area, storage volumes, outlet structure and appurtenances, 10:1 vegetated shelf, and pond plant materials meet or exceed the approved designs and plans. Verification of these design elements was determined by conducting asbuilt surveys by a registered land surveyor and calculations by the designer of the project. The Stormwater piping and structures within N. Pierce Street Extension has been installed and all of the onsite stormwater collection system has been installed with the exception of the building roof drains for the individual buildings. The concrete pads of the remaining five building have been poured and vertical construction is incomplete. Approximately 60% of the curb and gutter for the drives and parking have been installed and 50% of the sidewalks have been installed. Fine grading will be completed as additional buildings area finished. 133 Lockhart Drive a Beaufort, NC 28516 a Voice: 252-838-1221 o Fax: 252-838-1227 o Web: riceassociatesplic.com Mr. Scott Vinson, SW Express Environmental Engineer Washington Regional Office, NCDENR— Division of Water Quality Stormwater Permit No. SW 7110618 PARTIAL CERTIFICATION High Density Commercial Wet Pond Project Beaufort County April 17, 2012 Page 2 of 2 Depending on the progress of building construction, including fine grading and stabilizing the entire site it may be necessary to provide one or more addition Partial Certifications prior to the Final Certification. Should you require any additional information or clarification of certification elements please contact me as provided below. You may also reach me on my cell phone — 252-732-6688. Very Truly Yours, RICE & ASSOCIATES, RECEIVE® --none ® APR 11 2012 eve Rice, P.E. W/attachments ®WQ-WAR® CC: Allen Lewis, Public Works Director, City of Washington Cheryl Steigerwald, The NRP Group Matt Regets, The NRP Group Harrison Ellinwood, EDA pa Permit Number: 5 w7/106 (O (to be provided by DPYQ) Drainage Area Number: Wet Detention Basin Operation and Maintenance Agreement I 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 a corrected, repaired or replaced immediately. These deficiencies can affect the integ tY=��i� of structures, safety of the public, and the removal efficiency of the BMP. The wet detention basin system is defined as the wet detention basin, JUN 28 2011 pretreatment including forebays and the vegetated filter if one is provided. W(� 1�I�Fl This system (check one): ❑ does ® does not incorporate a vegetated filter at the outlet. This system (check one): ❑ does ® does not incorporate pretreatment other than a forebay. Important maintenance procedures: — Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). — No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. — Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. — If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the maximum extent practical. — Once a year, a dam safety expert should inspect the embankment. After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.3 inches if in a Coastal County). Records of operation and maintenance should be kept in a known set location and must be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblem: How I will remediate theproblem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the wet Areas of bare soil and/or Regrade the soil if necessary to detention basin 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. I approximately six inches. Form SW401-Wet Detention Basin O&M-Rev,4 Page 1 of 4 Permit Number: 5w 7 110 61 S (to be provided by DWQ) Drainage Area Number: BMP element: Potentialproblem: How I will remediate theproblem: The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the swale sediment off -site. The pipe is cracked or Replace the pipe, otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to swale. smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. The forebay Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design depth for possible. Remove the sediment and sediment storage. 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 revent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The vegetated shelf Best professional practices Prime according to best professional show that pruning is needed practices to maintain optimal plant health. 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. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The main treatment area Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design sediment possible. Remove the sediment and storage depth. dispose of it in a location where it will not cause impacts to streams or the BMP. Algal growth covers over Consult a professional to remove 50% of the area. and control the algal growth. Cattails, phragmites or other Remove the plants by wiping them invasive plants cover 50% of with pesticide (do not spray). the basin surface. Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4 Permit Number: (to be provided by DWQ) Drainage Area Number: BMP element: Potentialproblem: How I will remediate theproblem: The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. Evidence of muskrat or Use traps to remove muskrats and beaver activity is present, consult a professional to remove beavers. 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. if applicable) 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 local NC Division of damage have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 919-733- 1786. The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 5.0 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 5.0 feet in the forebay, the sediment shall be removed. Sediment Removal Bottom BASIN DIAGRAM (fill in the blanks) Permanent Pool Elevation 8.0 3_0 Pe manen Pool ------------------ Volume Sediment Removal Elevation 3_0 Volume i 2_0 -ft Min. -------------------------------------------- ----`-,-/ Sediment Bottom Elevation 2.0 2 1-ft,Vrr Storage Sedimei Storage FOREBAY MAIN POND Form SW401-Wet Detention Basin O&M-Rev.4 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 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:Alderbrook Pointe Multi -Family Housing BMP drainage area number:, Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, A l(J4Ja- 11 I. KIMOW 4 , a Notary Public for the State of ft i 0 J , County of , do hereby certify that Y . IcA personally appeared before methislWh day ofand acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, AMANDA M. LOHO6= Nctary Public. late of OW My Commiss on EAIbVS April 6 2014 SEAL My commission expires Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4 �2 DWQ USE ONLY Date Received Fee Paid Permit Number 8 Applicable Aules: (select all that apply) ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction ❑ Non -Coastal SW- I-IQW/ORW Waters ❑ Universal Stormwater Mal 11 nt Pla r ❑ Other WQ M mt Plan: UAI k 6 c2 State of North Carolina RIMEOVEP Department of Environment and Natural Resources Division of Water Quality JUN 2 8 2011 STORMWATER MANAGEMENT PERMIT APPLICATION FORM �v � This form may be photocopied for use as an original a I. GENERAL INFORMATION 1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Alderbrook Pointe Multi -Family Housing (7.55 Acre Parcel out of Eskridge Crossing) 2. Location of Project (street address): 140 Alderbrook Circle (Future address of protect clubhouse - Alderbrook Circle not yet constructed) City: Washington County: Beaufort Zip: 27889 3. Directions to project (from nearest major intersection): Starting at US Hwy. 17 Bypass & US Hwy 264 travel east toward the City of Washington on US FIwy 264 for a distance of 6,000 ft, turn left on Washington Street and travel a distance of 3,600 ft to W. 15th St, turn right and travel 400 ft to N. Pierce St, turn left and travel 700 ft to the end of the existing pavement Project on Right 4. Latitude:35* 33' 36" N Longitude:77° 03' 02" W of the main entrance to the project. it. PERMIT INFORMATION: 1. a. Specify whether project is (check one): ®New ❑Modification b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit number , its issue date (if known) and the status of construction: ®Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification 2. Specify the type of project (check one): ❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other 3. If this application is being submitted as the result of a previously returned application or a letter from DWQ requesting a state stormwater management permit application, list the stormwater project number, if assigned, and the previous name of the project, if different than currently proposed, 4. a. 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: 9.1 ac of Disturbed Area ❑NPDES Industrial Stormwater 0404/401 Permit: Proposed Impacts b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number, issue date and the type of each permit: FonnSWU-I01 Version07Jun2010 Page I of III. CONTACT INFORMATION 1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee, designated government official, individual, etc. who owns the project): Applicant/Organization: Alderbrook Poitne L.P. Signing Official & Title: Alan F. Scott, by:NRP Alderbrook Pointe LLC, Managing Member b.Contact information for person listed in item la above: Street Address: 5309 Transportation Blvd. City: Cleveland State:OH Zip:44125 Mailing Address (if applicable): Phone: (216 ) 475.8900 Email: ascott@nrpgroup.com Fax: ( ) c. Please check the appropriate box. The applicant listed above is: ® The property owner (Skip to Contact Information, item 3a) ❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below) ❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and 2b below) ❑ Developer* (Complete Contact Information, item 2a and 2b below.) 2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the person who owns the property that the project is located on): Property Signing Official & b.Contact information for person listed in item 2a above: Street Address: Zip: Mailing Address (if applicable): City: State Phone: ( ) Fax: Email: 3. a. (Optional) Print the name and title of another contact such as the projects construction supervisor or other person who can answer questions about the project: Other Contact Signing Official & Title: b.Contact information for person listed in item 3a above: Mailing Address: City: State: Phone: ( ) Fax: ( ) 4. Local jurisdiction for building permits: City of Washington Point of Contact: Allen Lewis, Public Works Director Phone #: (252 ) 975-9302 Form S WU-101 Version 07Jun2010 Page 2 of 6 IV. PROJECT INFORMATION 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. The stormwater from the site (7.55 Ac) and a portion of N. Pierce St (0.92 Ac offsite - proposed & future) will be collected by an onsite stormwater system and treated in a single Wet Detention Pond designed to remove 90% TSS which will discharge to an existing drainage ditch. Upstream offsite stormwater runoff (excluding N. Pierce St frontage) will bypass the site and be rerouted to the existingdrainage rainage ditch without treatment. 2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved: ❑ Approval of a Site Specific Development Plan or PUD Approval Date: ❑ Valid Building Permit Issued Date: ❑ Other: Date: b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with: ❑ Coastal SW - 1995 ❑ Ph II - Post Construction 3. Stormwater runoff from this project drains to the Tar -Pamlico River basin. 4. Total Property Area: 7.55 acres 5. Total Coastal Wetlands Area: 0.0 acres 6. Total Surface Water Area: 0.0 acres 7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project Area': 7.55 acres Total project area shall be calculated to exclude the following the nornml pool of impounded structures, the area between the banks of streams and rivers, the area below the Nonnal High Water (NHW) line or Mean High Water (MHW) line, and coastal wetlands landward from the NHW (or MHM line. The resultant project area is used to calculate overall percent built upon area (BL1A). Non -coastal wetlands landeoard of tune NHW (or MHW) line pray be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 50 9. How many drainage areas does the project have? one 1 (For high density, count 1 for each proposed engineered stonnroater BMP. For low density and other projects, use 1 for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9. If there are more than four drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. Basin Information Draina e Area 1 Draina e Area Draina e Area Draina e Area Receiving Stream Name Cherry Run Stream Class * C; Sw, NSW Stream Index Number * 28-103-17 Total Drainage Area (so 368,953 On -site Drainage Area (so 328,878 7,5 <1r- Off-site Drainage Area (so 40,075 Proposed Impervious Area**(so 184,476 % Impervious Area** total 50 Impervious— Surface Area Draina e Area 1 Draina e Area _ Draina e Area Draina e Area On -site Buildings/Lots (so 51,497 On -site Streets (so 24,125 On -site Parking (so 25,938 On -site Sidewalks (so 19,476 Other on -site (so 34,891 Future (so 17,487 (N. Pierce Street Ext. Off -site (so 11,062 Existing BUA*** (so 0 Total (so: 184,476 * Streams Class and Index Number can be determined at: luttu://aortal.ncdenr.orghvebAvq&,slcsulclassifications Form SWU-101 Version 07Jun2010 Page 3 of 6 " Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. 'Report only that arnounrt of existing BUA that will remain after development. Do not report any existing BUA that is to be removed and which will be replaced by new BUA. 11. How was the off -site impervious area listed above determined? Provide documentation. The off -site impervious area is for 255 lineal feet of N. Pierce St. pavement & sidewalks - See drawing C.6.0 Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened & F,ndangered Species watershed that may be subject to more stringent stornmater requirements as per NCAC 028.0600. V. SUPPLEMENT AND O&M FORMS The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded from http://portal.ncdetir.org/web/wq/ws/su/bmp-manual. 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. A detailed application instruction sheet and BMP checklists are available from http://portal.iicdenr.org/web/wq/ws/su/statesw/forms does. The complete application package should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating project on the interactive online map at http://portal.ncdennorg/web/ wq/ws/su/maw.) Please indicate that the following required information have been provided by initialing in the space provided for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for each submitted application package from http://portal.ncdenr.org/web/wq/ws/su/statesw/forms does. I ' 'als 1. Original and one copy of the Stormwa ter Management Permit Application Form. 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants Form. (if required as per Part VII below) 3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M agreement(s) for each BMP. 4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to http://www.envhelp.org/pages/otiestopexi2ress.html for information on the Express program and the associated fees. Contact the appropriate regional office Express Permit Coordinator for additional information and to schedule the required application meeting.) 5. A detailed narrative (one to two pages) describing the stormwater treatment/managementfor the project. This is required in addition to the brief summary provided in the Project Information, item 1. 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the lh mile radius on the map. 7. Sealed, signed and dated calculations. 8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: a. Development/Project name. b. Engineer and firm. c. Location map with named streets and NCSR numbers. d. Legend. e. North arrow. f. Scale. g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevation of impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal waters, and any coastal wetlands landward of the MHW or NHW lines. • Delineate the vegetated buffer landward from the normal pool elevation of impounded structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters. i. Dimensioned property/project boundary with hearings & distances. j. Site Layout with all BUA identified and dimensioned. k. Existing contours, proposed contours, spot elevations, finished Floor elevations. 1. Details of roads, drainage features, collection systems, and stormwater control measures. Form SWU-101 Version 07Jun2010 Page 4 of 6 9. m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the main set of plans, not as a separate document). p. Vegetated buffers (where required). Copy of any applicable soils report with the associated SHWT elevations (Please identify elevations in addition to depths) as well as a map of the boring locations with the existing elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs, the report should also include the soil type, expected infiltration rate, and the method of determining the infiltration rate. (Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verifij the SHWT prior to submittal, (910) 796-7378.) A copy of the most current property deed. Deed book: 1753 Page No: 519-521 For corporations and limited liability corporations (LLC): Provide documentation from the NC _ Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of State, otherwise the application will be returned. http://www.secretary.state.nc.us/Corporatiotis/CSearcli.aVx VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and protective covenants forms can be downloaded from http://portal.ncdenr.org/web/wq/ws/su/statesw/forms clocs. Down load the latest versions for each submittal. In the instances where the applicant is different than the property owner, it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, 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. VIII. CONSULTANT INFORMATION AND AUTHORIZATION Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as addressing requests for additional information). Consulting Engineer: Steven M. Rice, P.E. Consulting Firm: Rice_& Associates, PLLC (SITE CIVIL ENGINEER) Mailing Address: 133 Lockhart Drive City: Beaufort State: NC Zip: 28516 Phone: (252 ) 838-1221 Email: steve.rice©riceassociatespllc.com Fax: (252 ) 838-1227 IX. PROPERTY OWNER AUTHORIZATION (if Can tact Information, item 2 has been filled ont, complete this section) I, (print or hjpe name of person listed in Contact Information, item 2a) , certify that I own the property identified in this permit application, and thus give permission to (print or hjpe ntame of person listed in Contact Information, item 1a) with (print or hjpe name of organization listed in Contact Information, item 1a) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. Form SWU-101 Version 07Jun2010 Page 5 of As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6. a Notary Public for the State of . County of do hereby certify that before me this _ day of personally appeared and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission X. APPLICANT'S CERTIFICATION I, (print or hjpe name of person listed in Contact Information, itent la) Alan F. Scott certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be c tructed in conformance with the approved plans, that the required deed restrictions and protective coven is ill be recorded, and that the proposed project complies with the requirements of the applicable stormw er rul unciv 15A NCAC 2H.1090,SL 2006-246 (Ph. II -Post Construction) or SL 2008-211. Signatu Date: G/244 k I, Amm_- y A. "T` ueR a Notary Public for the State of ck'tlz) Comity of C MAAko�A do hereby certify that AuAtA F. se-o-Tr personally appeared before me this Atay of —TV.t4E 'abI k , and acknow dge the due �� execution/of the application for a stormwater permit. Witness my hand and official seal, SEAL M 1 /� 9� ANNE M. IYLER /s Notary Public, State of Ohio �i�riigi�i� ,.� ✓ *°`��`'A"� Recorded in Lorain County My Commission Expires %i"/�©/.✓"/N�,os?�� July 5, 2014 My commission Form SWU-101 Version 07Jun2010 Page 6 of 6 ! K A , Permit No. 5 t'`% % 1) 0 61 (to be provided by Dw0) II. DESIGN INFORMATION Surface Areas Area, temporary pool 35,680 ft' Area REQUIRED, permanent pool 18,448 ft2 SAIDA ratio 5.00 (unidess)' Area PROVIDED, permanent pool, Ap..,w 30,471 ft' V OK Area, bottom of 10ft vegetated shelf, Ad,_,, y 26,784 ft Area, sediment cleanout, top elevation (bottom of pond), Ab,,y„ d 16,552 ft` Volumes , Volume, temporary pool 23,516 ft' " / OK Volume, permanent pool, Vp,,,,y,d 110,809 ft2 V Volume, forebay (sum of forebays if more than one forebay) 21,911 ft' Forebay % of permanent pool volume 19.8% % OK SAIDA Table Data Design TSS removal 90 % Coastal SAIDA Table Used? Y (Y or N) Mountain/Piedmont SAIDA Table Used? N (Y-or SAIDA ratio 5.00 (umiless) Average depth (used in SAIDA table): Calculation option 1 used? (See Figure 10-2b) Y (Y or N) Volume, permanent pool, Vp.„ 06 110,809 ft' Area provided, permanent pool, Apra„ -„a 30,471 fte '' // Average depth calculated 3,63 ft OK Average depth used in SAIDA, d„, (Round to nearest 0.5ft) V 3.5 ft y/ OK Calculation option 2 used? (See Figure 10-2b) N (Y or N) Area provided, permanent pool, A,,,,,_p,a 30,471 ft` Area, bottom of 10ft vegetated shelf, Ado.,,m 26,784 fte ✓ Area, sediment cleanout, top elevation (bottom of pond), Ay,_,o, 16,552 ft2 t/ 'Depth' (distance b/w bottom of 1 Oft shelf and top of sediment) 4.50 ft Average depth calculated ft Average depth used in SAIDA, d„, (Round to nearest MR) ft Drawdown Calculations Drawdown through odfce? Diameter of odfce (if circular) Area of orifice (if -non -circular) Coefficient of discharge (Co) Driving head (H,) Drawdown through weir? Weir type Coefficient of discharge (Cw) Length of weir (L) Driving head (H) Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Storage volume discharge rate (through discharge orifice or weir) Storage volume drawdown time Additional Information Vegetated side slopes Vegetated shelf slope Vegetated shelf width Length of flowpath to width ratio Length to width ratio Trash rack for overflow 8 orifice? Freeboard provided Vegetated filter provided? Recorded drainage easement provided? Capures all runoff at ultimate buildout? Drain mechanism for maintenance or emergencies is: Form SW401-Wet Detention Basin-Rev.e-9/17/09 Y (Y or N) 2.50 in in' 0.60 (unless) 0.70 It N (Y or N) (unifess) (unifess) ft ft 3.05 fts/sec 1.64 ft3/sec 0.07 fts/sec 3.45 days 3 :1 10 :1 OK, draws down in 2-5 days. OK OK EGFIV� V JUN 28 2011 .NOfNEF-F •^N M . 10.0 it OK 3:1 OK 2.5 :1 OK Y (Y or N) OK 1.0it OK N (Y or N) OK Y (Y or N) OK Y (Y or N) OK manual pump Pans I. a It. Design Summery, Page 2 of 2 Permit No. 5W7tI()6j1,2 fto be Prowled by DWQ) ��ii Orot W ATf97 ti NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part III) must be printed, filled out and submtted along with all of the required information. Project name Alderldrook Apartments- Washington, NC Contact person Steven M. Rice, P.E. Phone number 252-838-1221 Date 26-Apr-11 Drainage area number #1 II. DESIGN INFORMATION ' Site Characteristics Drainage area 368,953 ft' ✓ Impervious area, post -development 184.476 ft' %impervious 50.00 % Design rainfall depth 1.5 In ✓ Storage Volume: Non-SAWaters Minimum volume required Its Volume provided Storage Volume: SA Waters 1.5' runoff volume Pre -development 1-yr, 24-hr ronoff Post -development 1-yr, 24-hr runoff Minimum volume required Volume provided Peak Flow Calculations Is the preipost control of the tyr 24hr stone peak flow required? 1-yr, 24-hr rainfall depth Rational C, pre -development Rational C, post -development Rainfall intensity: 1-yr, 24-hrstorm Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak flow control Elevations Temporary pool elevation Permanent pool elevation SHWT elevation (approx. at the pen. pool elevation) Top of 1 Oft vegetated shelf elevation Bottom of 10ft vegetated shelf elevation Sediment cleanoul, top elevation (bottom of pond) Sediment cleanoul, bottom elevation Sediment storage provided Is there additional volume stored above the state -required temp. pool? Elevation of the top of the additional volume Forth SW401-Wet Detention Basin-Rev.8-9/17/09 Y (Y or N) 3.5 in 0.10 (unilless) 053 (unidess) 0.15 in/hr OK 3,05 ft3/sec 1.64 ft3/sec -1.41 113/sec QQFESS/Q119 SEAL 8293 F'YCr 1,10 .0r rN M `' final I --*.d fmsl final (/ fmsl tmsl Data not needed for calculation option #1, but OK if provided, fmsl fmsl Data not needed for calculation option #1, but OK if provided. G6lG CCG mG Parts I. & It. Design Summery, Page 1 of 2 Permit No. 5 W 711o6 (0 (to be provided by DWO) III. REQUIRED ITEMS 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 belo%'4t1a rrrr,r, requirement has not been met, attach justification. .1%T\� �AkO Pagel Plan Initials Sheet No. 0.3.0 c�4'I Plans (1" - 50' or larger) of the entire site shoving: - Design at ultimate build -out, - Off -site drainage (if applicable), - Delineated drainage basins (include Rational C coefficient per basin) Basin dimensions, Pretreatment system, High flow bypass system, Maintenance access, Proposed drainage easement and public right of way (ROW), Overflow device, and Boundaries of drainage easement. 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing: - Outlet structure with trash rack or similar, - Maintenance access, - Permanent pool dimensions, - Forebay and main pond with hardened emergency spillway, fJIA - Basin cross-section, - Vegetation specification for planting shelf, and - Filter strip, 3. Section view of the wet detention basin (1" = 20' or larger) showing: - Side slopes, 3:1 or lower, - Pretreatment and treatment areas, and Inlet and outlet structures. Cr 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified on the plans prior to use as a wet detention basin. 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for Forebay, . ' to verify volume provided. Pq-Cty ¢(o d rvV �' 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the 7 // entire drainage area is stabilized. 7. The supporting calculations. t?ogT Do11, CA(,5 per. Q"f — pc,:73 &T&IJO-119 8. A copy of the signed and notarized operation and maintenance (0&M) agreement. (�{ _MA 9. A copy of the deed restrictions (if required). �Vw✓ � ttVV 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County f45 soil maps are not an acceptable source of soils information. 5yf►f8t i s t y -7-, 43 Form SW401-Wet Detention Basin-Rev.9-9/17/09 Part III. Required Items Checklist, Page 1 of 1 5� ,hL+1Y .'��� *: � ��a :t� �'t Y :i��2 '': la 5 .KV :Z �� 'i