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HomeMy WebLinkAboutSW8100901_HISTORICAL FILE_20110103STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 10 0q Ol DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE toll OI 03 YYYYMMDD NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor January 3, 2011 Mr. Greg Maready, President Parrot Landing, Inc. 126 Phillips Loop Road Swansboro, NC 28584 Division of Water Quality Coleen H. Sullins Director Subject: State Stormwater Management Permit No. SW8 100901 Parrot Landing Subdivision High Density Subdivision Wet Pond Project Onslow County Dear Mr. Maready: Dee Freeman Secretary The Wilmington Regional Office received a complete State Stormwater Management Permit Application for Parrot Landing Subdivision on December 17, 2010. 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. SW8 100901 dated January 3, 2011, for the construction of the subject project. This permit shall be effective from the date of issuance until January 3, 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. As stated in the general conditions, 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. Particular attention should be paid in the construction of the vegetated filter strips to ensure that they are non -erosive for a 10-year, 24 hour storm. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611- 7447. Unless such demands are made this permit shall be final and binding. Wilmington Regional Office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 Phone: 910-796.72151 FAX: 910-350.20041 Customer Service: 1-877-623-6748 Internet: www.ncwaterqualiry.org NorthCaraolina Naturally An Equal Opportunity 1 AI&mauve Action Employer January 3, 2011 Greg Maready Parrot Landing If you have any questions, or need additional information concerning this matter, please contact Steve Pusey, or me at (910) 796-7215. Sincerely, Georgette" Scott Stormwater Supervisor Division of Water Quality GDS/sgp: S:\WQS\STORMWATER\PERMIT1100901.jan11 cc: W. Randall Edens, PE — RSC Engineering, PLLC Onslow County Inspections Steve Pusey Wilmington Regional Office Page 2 ol'2 State Stormwater Management Systems Permit No. SW8 100901 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 Parrot Landing, Inc. Parrot Landing Subdivision Queens Creek Road, Onslow County FOR THE construction, operation and maintenance of two (2) wet detention ponds in compliance with the provisions of Session Law 2008-211 and 15A NCAC 2H .1000 (hereafter separately and collectively referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until January 3, 2021, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.7 on page 3 of this permit. The subdivision is permitted for thirty four (34) lots, each allowed a maximum of 774 square feet of built -upon area. 3. The runoff from all built -upon area within the permitted drainage areas of this project must be directed into the permitted stormwater control systems. The wet ponds designated as Pond A and Pond B, have been designed to treat the runoff from 19,878 and 58,782 square feet of Built -Upon Area, respectively. 4. Stormwater runoff in excess of the design storm must flow overland through a vegetative filter strip with a minimum length of 50'. The filter strip and level spreader shall be designed per NCAC 2H.1008 (f) to pass the peak flow from the 10 year storm in a non -erosive manner. Page 2 of 9 State Stormwater Management Systems Permit No. SW8 100901 A 50' wide vegetative buffer must be provided adjacent all surface waters, measured horizontally from and perpendicular to the normal pool of impounded structures, the top of banks of both sides of streams and rivers and the mean high water line of tidal waters. The buffer may be graded and may contain wetlands. The wet detention ponds may not be located within the buffer and no built -upon area is allowed within the buffer. Within '/z mile of SA waters, a secondary BMP to treat the discharge from the wet detention pond must be provided. The discharge from the secondary BMP shall not be considered a direct discharge to SA waters. The secondary BMPs proposed for these wet detention ponds are level spreader / vegetated filter strips designed to effectively infiltrate the design storm, and bypass the excess flow from a 10-year, 24-hour storm in a non -erosive manner. The following design elements have been permitted for this wet detention pond stormwater facility, and must be provided in the system at all times. Pond A Pond B a. Draina a Area, acres: 0.72 2.86 Onsite, ft : 31,388 106,078 Offsite, ft : 0 18,534 b. Total Impervious Surfaces, ft : 19,878 58,782 Buildings / Lot BUA, ft : 8,667 14,001 Roads / Parking, ft : 10,185 31,384 Sidewalks, ft : 1,026 2,874 Pump station, ft : 0 3,801 Off -site, ft : 0 6,722 c. Average Pond Design Depth, feet: 3.0 4.5 d. TSS removal efficiency: 90% 90% e. Design Storm, inches: 3.8 3.8 f. Permanent Pool Elevation, fmsl: 10.0 5.80 g. Permanent Pool Surface Area, ft : 3,508 4,880 h. Permitted Storage Volume, ft : 5,755 16,915 i. Temporary Storage Elevation, fmsl: 11.24 8.21 J. Permitted Forebay Volume, ft : 1,399 2,415 k. Controlling Orifice, inches: 1.12 1.5 I. Average Orifice Flow Rate, cfs 0.021 0.052 m. Pre-dev.1 r - 24hr discharge rate, cfs: 0.029 0.113 n. Receiving Stream: Parrot Swam o. River Basin: White Oak p. Stream Index Number: 19-41-16-4 Classification of Water Body: SA; HQW It. SCHEDULE OF COMPLIANCE No person or entity shall alter any component of the approved stormwater system shown on the approved plans unless and until the Division has approved of the revised plan. 2. The permittee shall routinely monitor the project's built -upon area and piping. The permittee shall ensure that the proposed built -upon area for the entire project and for each lot does not exceed the maximum allowed by this permit and that the amount of driveway piping does not exceed that minimum length necessary to get under the driveway. Page 3 of 9 State Stormwater Management Systems Permit No. SW8 100901 The permittee shall not exceed the maximum BUA limit and shall not approve any lot plans if they will exceed the maximum lot BUA limit established in this permit, unless and until the permittee has received approval from the Division of Water Quality. If any lot is found to have exceeded the permitted BUA limit for that lot, the permittee shall notify the lot owner in writing and require resolution. Any lot owner found to have exceeded the maximum permitted built -upon area for the lot shall be subject to enforcement action by the Division of Water Quality. 4. If an Architectural Review Board or Committee is set up by the permittee to review new and modified lot plans for compliance with the BUA limit, the plans reviewed must include all proposed built -upon area and driveway piping. Any approvals given by the Board or Committee on behalf of the permittee do not relieve the lot owner of the responsibility to comply with the BUA limit for that lot established by the permit and the recorded deed restrictions. 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. 6. 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. 7. 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 development, subdivision, acquisition, or sale of any, 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. 8. The permittee shall submit for approval, final site layout and grading plans for any permitted future development areas shown on the approved plans, prior to construction. 9. 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. 10. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 11. 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. Page 4 of 9 State Stormwater Management Systems Permit No. SW8 100901 12. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 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. 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 by the permittee. 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 transfer of the permit, the stormwater facilities will be inspected by DWQ personnel. The project and the stormwater facility must be in substantial compliance with all permit conditions. Any items not in substantial compliance must be repaired, replaced or restored to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 17. Decorative spray fountains will not be allowed in the stormwater treatment system. 18. If permeable pavement credit is desired, the permittee must submit a request to modify the permit to incorporate such language as required by the Division of Water Quality. The request to modify must include a soils report identifying the type of soil, the Seasonal High Water Table elevation and the infiltration rate. Upon the successful completion of a permit modification, the individual lot owners that request to utilize permeable pavements shall submit the necessary forms and documentation to the permittee, or a designated agent, and receive approval prior to construction of the permeable pavement. 19. 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 100901, 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 100901 f. The maximum built -upon area per lot is 774 square feet. 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. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be accomplished through providing roof drain gutters, which drain to the pond or to the street, grading the lot to drain toward the pond or street, or grading perimeter swales and directing them into the pond or street. h. Built -upon area in excess of the permitted amount will require a permit modification. i. If permeable pavement credit is requested, the property owner must submit a request, with supporting documentation, to the permittee and receive approval prior to construction of BUA. 20. 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. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. At least 30 days prior to the sale of the property, or a change of ownership, or a name change of the permittee or of the project, or a mailing address change, the permittee must submit completed and signed Name/Ownership Change form to the Division of Water Quality, accompanied by the supporting documentation as listed on the form. The approval of this request will be considered on its merits and may or may not be approved. The permittee is responsible for compliance with all permit conditions until such time as the Division approves a request to transfer the permit. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 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. 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. 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. Page 6 of 9 State Stormwater Management Systems Permit No. SW8 100901 7. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 8. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 9. The 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 2006- 246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al. 10. The permittee shall submit a permit renewal application at least 180 days prior to the expiration date of this permit. The renewal request must include the appropriate documentation and the processing fee. Permit issued this the 3`d day of January, 2011 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 100901 Page 7 of 9 `MEMORY TRANSMISSION REPORT u FILE NO. 877 DATE 12.22 15:48 TO : 8 919198076492 DOCUMENT PAGES 2 START TIME 12.22 15:48 END TIME 12.22 15:49 PAGES SENT 2 STATUS OR "" SUCCESSFUL TX NOTICE TIME :12-22-'10 15:49 FAX NOA :910-350-2004 NAME :DENR Wilmington ttt - 3ta[e of Nortfi Caroling 'I�apnrtmrn[ of Eovironrtvc nt and Na[ural'Reeo urc ea ' W:l ming[on Regional OCfl co Beverly P-nvea Perdue, Governor llee Freeman, Secretary FAX COVER SKEET To: en>1 CO: Jar✓a CO: NC DENR FAX it: - FAKOk 9] 0-350-2004 , REMARKS:rru-f Ln.:�f.S,_ — V ii •lL.— Srir:.�.. - .. r !xl c..a lna ri.w. C. bna.n. women non. rv.c........... T........ nto)1P s-Tlm P.. A[o) ]N-zoa.[ wn p .�4PP..�u nlV w(a.m.o �. wloan lmv[v State of North Carolina f Department of Environment and Natural Resources Wilmington Regional Office Beverly Eaves Perdue, Governor Dee Freeman, Secretary FAX COVER SHEET Date: i 2 - z. z -ip No. Of Pages: (excluding cover) To: leer 12rr/'je From: P is e ti CO: Z) CO: NC DENR FAX #: 9i9- FAX#: 910-350-2004 6707 - 6y9z REMARKS: — V Plea-y c,Il .1%, 127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 Telephone (910) 796-7215 Fax (910) 350-2004 An Equal Opportunity Affirmative Action Employer Pusey, Steven From: Sonya Edens [sonya@rscengineedng.com) Sent: Wednesday, December 22, 2010 9:14 AM To: Pusey, Steven Subject: Possibly spam: RE: Parrot Landing Steve — Just looked at my calcs and compared to what you have below. I am in agreement with what you have below. Thanks so much. From: Pusey, Steven[mailto:steven.ouseyCa)ncdenr.00vJ Sent: Wednesday, December 22, 2010 8:58 AM To: sonvaOrscengineerina.com Subject: Parrot Landing Importance: High Sonya, I reviewed the calculations again yesterday. It appears that a couple of items were wrong on your wet pond supplement. The listing of forebay volume and permanent pool volume for Pond A didn't match your calculations. have made the changes to your Supplement so that it now matches. A summary of these values is listed below: Permanent pool volume = 6,445 cf Forebay volume =1,289 cf Please confirm your agreement or advise if this is not correct. Thanks, Ste✓e yR_11T Environmental Engineer NC DENR - Division of Water Quality Surface Water Protection - Stormwater Tel: (910) 796.7215 Fax: (910) 350-2004 E-mail: Steven. Pusey@ncdenr.gov E-mail correspondence to and from this address may be subject to the NC public Records Law and may be disclosed to third parties. US Highway 17, Hampslead, KC 28443 Engineering, PELC PHONE: 910.270.9599 Fox: 910.270.9592 E-mail: rscengineerin0@charler.nel December 16, 2010 NCDENR — Division of Water Quality Attn: Mr. Steve Pusey 127 Cardinal Drive Extension Wilmington, NC 28405 RE: Parrot Landing Subdivision — Stormwater Response RSC 1t 1002430 Mr. Pusey, This is in response to the email request for additional information email dated 12/8/10. Please see below for information: Show the top of the bank of stream and position the 50' stormwater buffer from that line. Please see attached plans that have been revised to show the stream/property line, the top of the bank of stream (as picked up by surveyor) and the 50'stormwater buffer. In addition, the top of the bank of stream has been flagged in the field. Orifice diameter on Pond A is incorrect— it should be shown as 1.12" on the plans. Please see attached plans that have been revised to show the correction to the orifice diameter. If any additional information is required, please advise. Respectf RSC Engineering W. Randall Edens, PE DEC 1 7 ZOJO -- 4'rr-o/z-3-/o C,4 - - s -- 162(, S,We, ,<�,��_ z�7y 8 r l _ Te 7g1 sF - d-s -oz�,Z� oh9�9 r q�o'� 1 z �►,� �8) r �hx 2- - � Ohi' l CGS x Z = 's�d�! �• � - J OG s s o9L' z = 09h x � = s��) -- g-- RSC EnOlneerino, PLLC NCDENR— Division of Water Quality Attn: Mr. Steve Pusey 127 Cardinal Drive Extension Wilmington, NC 28405 16310 US I lOhway I I. HamOsleod. HC 29443 PHONE: 910.270.9599 Fax: 910.270.9592 E-mall: rseengineerinp@eharler.net RE: Parrot Landing Subdivision — StormwaterResponse RSC # 1002430 Mr. Pusey, December 2, 2010 WD DEC 0 2 2010 This is in response to the email request for additional information email dated 12/1/10. Please see below for information: I calculated that you have 3,900 sf BUA for sidewalks on the project. Your permit application states 3,440 sf. This is less by 460 sf (the equivalent of one building). Did you miscalculate this? Can you take it out of another part of the impervious calculations such as the parking area so that you still have the same overall impervious area. Please check your calculations and advise. After further review of the impervious calculations, it was discovered that there was an error with inclusion/exclusion of the sidewalk from the building that sits on Toucan Way. It was removed from Drainage Basin A, but inadvertently left out of Drainage Basin B. The calculations have been revised (copy attached) and the plans modified to reflect the changes (2 copies of C2 attached). In reviewing the total impervious surface area for Drainage Basin B, it appears that we had over- estimated the existing road (due to on entrance change that was made). This allowed the total impervious value for Drainage Basin B to remain unchanged and no revisions to the pond calculations are required. If any additional information is required, please advise. Respectfully, RSC Engineering W. Randall Edens, PE 8y. C 022010 Pusey, Steven From: Pusey, Steven Sent: Monday, November 29, 2010 3:39 PM To: 'sonya@rscengineedng.com' Subject: Parrot Landing Stormwater Permit Importance: High Sonya, Ireceived 2-sets of plans today as requested. However, it appears that the 50' stream buffer is missing on sheets C1 and C2. Please revise and resubmit two (2) copies of these sheets. Please make sure the buffer extends along the entire length of the stream including the section on the southern end. Also, ensure that the buffer is measured from the top of bank of the stream, not the centerline. Thanks, Ste✓e-Pulley Environmental Engineer NC DENR - Division of Water Quality Surface Water Protection - Stormwater Tel: (910) 796.7215 Fax: (910) 350-2004 E-mail: Steven.Pusey@ncdenr.gov E-mail correspondence to and from this address may be subject to the NC Public Records Low and may be disclosed to third parties. n- ; Pusey, Steven From: Pusey, Steven Sent: Tuesday, November 23, 2010 4:34 PM To: 'sonya@rscengineedng.com' Subject: Parrot Landing Importance: High Sonya, I have reviewed your latest submittal. All is good except the following: 1. On page C2: Under note for Drainage Basin B — Conc. Walk area should = 2,414 sf in lieu of 7,644 sf 2. On page C3: On Emergency Spillway Detail — Crest of Weir Spillway Elev. should be 11.5' in lieu of 11.24'. 3. 1 have only one (1) complete plan set. Pages C1 & CS were received on Oct. 15, and of course, pages C2 — C4, just submitted, were received on Nov. 22. Please make corrections and resubmit two (2) complete plan sets. That should do it. Thanks, StedePwery Environmental Engineer NC DENR - Division of Water Quality Surface Water Protection - Stormwater Tel: (910) 796.7215 Fax: (910) 350-2004 E-mail: Steven.Pusey@ncdenr.Rov E-mail correspondence to and from this address may be subject to the NC Public Records Law and may be disclosed to third parties. RECD NOV 2 2 2010 Enalneerina. PLLC PHONE: 910.270.9599 FOX: NCDENR — Division of Water Quality Attn: Mr. Steve Pusey 127 Cardinal Drive Extension Wilmington, NC 28405 RE: Parrot Landing Subdivision —Stormwater Response RSC # 1002430 Mr. Pusey, 16310 US Niahway 17. Namaslead, NC 28443 592 E-mail: rscenalneerina@charler.nel November 22, 2010 This is in response to the request for additional information email dated 11/18/10. Please see below for information about each item requested: Pond A: 1. The temporary pool elevation should be 11.24' on the plans to match the Supplement. t 4. Pond B: /I. 2. The plan has been revised. The emergency spillway elevation needs to be changed on the plans. The elevation should be between 11.24' (overflow) and 12.15' (top of berm). The plan has been revised. The average depth should be 3.0 ft. Please change on calculations and Supplement. Note that this changes the SA/DA ratio slightly. Should not impact pond design. There was an error in the spreadsheet average depth calculation. That has been corrected and additional verification completed to ensure the average depth is 3 feet. The SAIDA ratio and the required surface area both changed as a result, but Pond A as designed has sufficient surface area and required no further modification. Revised supplement form and calculations are attached. Please note that these changes may require modifications to several notes on the plans. The SA/DA ratio should be around 4.07. Please revise calculations and Supplement. The SAIDA ratio has been revised (see #2 below). The permanent pool area required is approx. 5,076 sf, therefore, the provided amount of 4,880 sf is too low. An additional 1 foot has been added to the bottom of the pond to change the depth to 4.5 feet and the SAIDA to 3.67 (calculations are attached). The required surface area using the revised numbers is 4,573 sf (Pond B has 4,880 sf provided). Other than adding afoot to the bottom of the pond, no additional modifications were required. Revised supplement form and calculations are attached. 3. Inclusion of Queens Creek Road in drainage area depends on drainage ditch alongside road. Please check and revise if necessary. This could impact pond design. The existing ground topographic survey does not indicate a swale or ditch. if this is the case, the runoff will enter the site and make its way to the pond and the pond is sized adequately. 4. Please note that these changes may impact plans as well as several notes on the plans. If any additional information is required, please advise. Respectful. �r RSC Engineering W. Randall Edens, PE Pusey, Steven From: Pusey, Steven Sent: Thursday, November 18, 2010 3:42 PM To: 'sonya@rscengineering.com' Subject: Parrot Landing Sonya, Here are my comments on your latest stormwater submittal for Parrot Landing. The following items need to be addressed: Pond A: 1. The temporary pool elevation should be 11.24' on the plans to match the Supplement. 2. The emergency spillway elevation needs to be changed on the plans. The elevation should be between 11.24' (overflow) and 12.15' (top of berm). 3. The average depth should be 3.0 ft. Please change on calculations and Supplement. Note that this changes the SA/DA ratio slightly. Should not impact pond design. 4. Please note that these changes may require modifications to several notes on the plans. Pond B: 1. The SA/DA ratio should be around 4.07. Please revise calculations and Supplement. 2. The permanent pool area required is approx. 5,076 sf, therefore, the provided amount of 4,880 sf is too low. 3. Inclusion of Queens Creek Road in drainage area depends on drainage ditch alongside road. Please check and revise if necessary. This could impact pond design. 4. Please note that these changes may impact plans as well as several notes on the plans. We look forward to your resubmittal. Please send revised plans and other information by no later than 12/2/2010. Thanks, StevePr'fer, Environmental Engineer NC DENR - Division of Water Quality Surface Water Protection - Stormwater Tel: (910) 796.7215 Fax: (910) 350-2004 E-mail: Steven.Pusey@ncdenr.gov E-mail correspondence to and from this address maybe subject to the NC Public Records Law and maybe disclosed to third parties. :�'_ is Ir' V ..� �.. ., i , t r 7.. l � ' 1 �. _ _ . . !� '� il! ,. .. i. ;� I � i � � � r� t .I. Jr .. .. �. . . .. i _ I 16310 US Highway 17, Hampstead, KC 28443 Engineering. PEEC PHONE: 910.270.9599 Fax: 910.270.9592 E-mail: rscengineering@chaner.net November 9, 2010 NCDENR— Division of Water Quality Attn: Mr. Steve Pusey 127 Cardinal Drive Extension Wilmington, NC 28405 RE: Parrot landing Subdivision — StormwaterResponse RSC # 1002430 Mr. Pusey, This is in response to the request for additional information letter dated 10/29/10. Please see below for information about each item requested: / 1. The permanent pool elevation must be above the lowest elevation of adjacent wetlands, and above V the lowest elevation of adjacent wetlands. Item 4 of your response states that the permanent pool (PP) elevation of Pond A is 5.8' with lowest wetlands elevation at 5', and permanent pool (PP) elevation of Pond B is 10' with lowest wetlands elevation at 8'. 1 believe these numbers should be as follows (fill in blanks), in accordance with your plans: Pond A: PP Elev. =10', lowest wetlands elev. _ _8'_ Pond B: PP Elev. = 5.8', lowest wetlands elev. _ —5'_ The numbers for Pond A were reported for Pond B and the numbers for Pond B were reported for Pond A. The Wet Detention Basin O&M Agreements for both Ponds A & B have incorrect values for permanent pool depth readings on the diagram. Note that this is the depth below the permanent S pool to the sediment removal elevation. It also appears that the elevations are incorrect. Please Lj revise and resubmit. Page 3 of the Wet Detention Basin O&M Agreements of both Pond A and B have been revised and are enclosed for your review. ,/ 3. The Wet Detention Basin Supplement for Pond B appears to have incorrect data compared to the drawing (i.e. —the permanent pool elevation is listed as 7.0'). The calculations also show PP elev. As 7.0'. Please check and revise as necessary. The Wet Detention Basin Supplement and the calculations of Pond B have been revised with the elevations indicated on the drawing and are enclosed for your review. /4. Please correct pond contour lines on plan view of both Ponds A & B. In particular, Pond A does not appear to have vegetated shelf in proper location. The vegetated shelf area of both ponds were not drawn correctly, more so Pond B than Pond A. I have revised both ponds' contouring to insure there is a 10' wide shelf with 6" below the pool elevation and 6" above the pool elevation. The pond dimension and curve tables were also revised to reflect this change, as well as the stage storage calculations. / 5. The 1-yr, 24-hr rainfall depth is incorrect on both Wet Detention Basin Supplements A & B. Please V/ verify against NOAA rainfall data. The Wet Detention Basin Supplements for both ponds A and B have been corrected with the NOAA rainfall depth of 3.8 inches. The revised Wet Detention Basin Supplements are enclosed for your review. Please check your calculations for average pond depths. Make sure the depths used in the calculations are the difference between the top of sediment and the bottom of vegetated shelf. The values submitted seem slightly high. The original average pond depth calculations did incorrectly include the 1'sediment in the calculations. I have revised the calculations by starting the bottom elevation at the top of the sediment storage. This changed the required surface area of both ponds. Pond B is unaffected because the provided area is much G6 larger than required, even after making the shelf modifications. Pond A did required some addition surface area as well, that additional area was also achieved when the shelf contouring was modified. l./ Please explain offsite impervious area included in BUA breakdown. The offsite impervious area shown in the breakdown is the part of the existing road that drains on to our site and to the Pond B. Go If any additional information is required, please advise. Respectfully, RSC Engineering W. Randall Edens, PE w NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor October 29, 2010 Greg Maready, President i)Brt.v44- Parrot Landing, Inc. 1-26-Phflfip9-L-aep-Re9d P, Swansboro, NC 28584 Division of Water Quality Coleen H. Sullins Director Subject: 2nd Request for Additional Information Stormwater Project No. SW8 100901 Parrot Landing Subdivision Onslow County Dear Mr. Maready: The Wilmington Regional Office received and accepted a revised State Stormwater Management Permit Application for Parrot Landing Subdivision on October 15, 2010. A preliminary in-depth review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: Dee Freeman Secretary The permanent pool elevation must be above the lowest elevation of adjacent wetlands, and above the lowest elevation of adjacent wetlands. Item 4 of your response states that the permanent pool (PP) elevation of Pond A is 5.8' with lowest wetlands elevation at 5', and permanent pool (PP) elevation of Pond B is 10' with lowest wetlands elevation at 8'. 1 believe these numbers should be as follows (fill in blanks), in accordance with your plans: Pond A: PP Elev. = 10', lowest wetlands elev. _ Pond B: PP Elev. = 5.8', lowest wetlands elev. _ 2. The Wet Detention Basin O&M Agreements for both Ponds A & B have incorrect values for permanent pool depth readings on the diagram. Note that this is the depth below the permanent pool to the sediment removal elevation. It also appears that the elevations are incorrect. Please revise and resubmit. 3. The Wet Detention Basin Supplement for Pond B appears to have incorrect data compared to the drawing (i.e. — the permanent pool elevation is listed as 7.0'). The calculations also show PP elev. As 7.0'. Please check and revise as necessary. 4. Please correct pond contour lines on plan view of both Ponds A & B. In particular, Pond A does not appear to have vegetated shelf in proper location. 5. The 1-yr, 24-hr rainfall depth is incorrect on both Wet Detention Basin Supplements A & B. Please verify against NOAA rainfall data. 6. Please check your calculations for average pond depths. Make sure the depths used in the calculations are the difference between the top of sediment and the bottom of vegetated shelf. The values submitted seem slightly high. Wilmington Regional Office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One Phone: 910-796-72151 FAX: 910-350-20041 Customer Service: 1-877-623.6746 North Caroti na Internet: wwvv.ncvvaterqualily.org An Equal Opportunity l Affirmative Action Employer Parrot Landing, Inc. October 29, 2010 Stormwater Application No. SW8 100901 Please explain offsite impervious area included in BUA breakdown. 8. Please remember that a change to one number may have a domino effect on other numbers. Please check all plans, calculations and forms and make changes as needed. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to November 17, 2010, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail, email or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue -the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 796-7215 or email me at steven.pusey@ncdenr.gov. Sincerely, Steve G. Pusey Environmental Engineer GDS/sgp: S:\WQS\STORMWATER\ADDINFO\2010\100901.oct10 cc: W. Randall Edens - RSC Engineering, PLLC Wilmington Regional Office Stormwater File Page 2 of 2 16310 US Hlahwa117, Hamaslead, KC 28443 Engineering, PLLC PHONE: 910.270.9599 Fax: 910.270.9592 E-mail: rsceaUlneerina@charter.nel October 15, 2010 NCDENR — Division of Water Quality Attn: Mr. Steve Pusey 127 Cardinal Drive Extension Wilmington, NC 28405 RE: Parrot Landing Subdivision —Stormwater Response RSC q 1002430 Mr. Pusey, This is in response to the request for additional information letter dated 9/21/10. Please see below for information about each item requested: i1. A copy of the wetland map and the notification from the US Army Corps of Engineers has been attached. / 2. All common/open space (which includes the BMPs and swales) will be owned by the HOA. Per our discussion, no easements are required in this situation. 3. Please see attached calculations which size the filters strips quantitatively using the formula provided in the request for additional information letter. Also, please see attached soil profile descriptions for borings 2 and 4 taken in the filter strip areas by a licensed soil scientists. The soil types taken from these profile descriptions (from the actual ground surface where the proposed filter strips are to be located) were correlated to an expected infiltration rate based on the charts attached. A conservative approach was taken with each filter strip and they were sized accordingly. The plans have been updated accordingly. 4. Based on the actual topo and proposed grades, the lowest elevation of the wetlands adjacent to Pond A are at elevation 5'. The permanent pool elevation for Pond A is at elevation 5.8', thus the permanent pool elevation is above the lowest elevation of adjacent wetlands. For Pond B, the lowest elevation of the adjacent wetlands is at elevation 8' and the permanent pool elevation is at 10', thus making the permanent pool elevation above the lowest elevation of the adjacent wetlands. See table below for summary. Permanent Pool Elevation Lowest Adjacent Wetlands Pond /D ' l0 5' Pond '.0'. 7 'V 2' s"PP• 5. Details on parking and sidewalk dimensions have been added to plans. 6. Please see attached 10 year velocity calculations for the vegetated filter strip from both pond discharges. The velocity of filter strip at Pond A is 0.22 fps and velocity of filter strip at Pond B is 0.34 fps. Both are less than 2 fps maximum. 7. The orientation of the level spreader and vegetated filter of Pond B have been revised per your recommendation. In reference to the 10 year storm event bypassing the level spreader/filter strip, according to Chapter 8 in the BMP manual, no bypass shall be required as this is an Engineered filter strip with discharges less than 10 cfs. Please see attached for the peak rates of discharge using the stormwater pond routing computer model. 10 Year Discharge 100 Year Discharge Pond A 0.574 cfs 2.950 cfs Pond B 1.375 cfs 5.497 cfs If any additional information is required, please advise. Respectfully, vgr-:9 RSC Engineering W. Randall Edens, PE Filer Strip "A" A=V/(2KT)=(L)(Cos ang) Volume to infiltrate (cf) 5710 V Hydraulic conductivity (in/hr) 0.39 K 0.03 ft/hr Dewatering Time (days) 3.26 T 78.24 hours Length along ground surface (ft) 50 L Angle of slope of vegetated filter 0.02 ang SgFt of Req'd Filter Area 1122.8 Filter Area Size SOx 22.5 Filer Strip "B" A=V/(2KT)=(L)(Cos ang) Volume to infiltrate (cf) 16885 V Hydraulic conductivity (in/hr) 0.39 K 0.03 fVhr Dewatering Time (days) 3.73 T 89.52 hours Length along ground surface (ft) 60 L Angle of slope of vegetated filter 0.02 ang SgFt of Req'd Filter Area 2901.8 Filter Area Size 60x 48.4 OCT 1 b 2010 ,,,,,, GAR 'PANE § o���'vy 2.aQo k9t' To11\\l: ggMDAI.�'c RECE;VED U.S. ARMY CORPS OF ENGINEERS OCT 0 b Z010 WILMINGTON DISTRICT Action Id. SAW-2010-00094 County: Onslo U.S.G.S. Quad: Hubert NOTIFICATION OF JURISDICTIONAL DETERMINATION Property Owner: Nichols Family Partnership, LLC- Agent: Applied Resource Management. P.C. attn: Phillip Barry Matthews . attn: Gene Young Address: P.O. Box 155 Address: P.O. Box 882 Swansboro, NC 28584 Hampstead, NC 28443 Property description Size (acres) 10.3 Nearest Town Hubert Nearest Waterway Parrott Swamp River Basin White Oak USGS HUC 03020106 Coordinates 34.671093 N-77.188886 W Location description: The property is located on the west side of Oueens Creek Rd approximately 1000 its intersection with Sand Ridge Rd Hubert. Onslow County. North Carolina Tax Parcel ID• 1314-93 Indicate Which of the Following Apply: A. Preliminary Determination fs. Based on preliminary information, there may be wetlands on the above described property. We strongly sugge you hav'� this property inspected to determine the extent of Department of the Army (DA) jurisdiction. To be considered f 1, a >O jurisdictional determination must be verified by the Corps. This preliminary determination is not an appealable act under the Regulatory Program Administrative Appeal Process ( Reference 33 CFR Part 331). B. Approved Determination _ There are Navigable Waters of the United States within the above described property subject to the permit requirements of Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act. Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. Z( There are waters of the U.S. including wetlands on the above described property subject to the permit requirements of Section 404 of the Clean Water Act (CWA)(33 USC § 1344). Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. We strongly suggest you have the wetlands on your property delineated. Due to the size of your property and/or our present workload, the Corps may not be able to accomplish this wetland delineation in a timely manner. For a more timely delineation, you may wish to obtain a consultant. To be considered final, any delineation must be verified by the Corps. tf, The waters of the U.S. including wetlands on your property have been delineated and the delineation has been verified by the Corps. We strongly suggest you have this delineation surveyed. Upon completion, this survey should be reviewed and verified by the Corps. Once verified, this survey will provide an accurate depiction of all areas subject to C WA jurisdiction on your property which, provided there is no change in the law or our published regulations, may be relied upon for a period not to exceed five years. _ The waters of the U.S, including wetlands have been delineated and surveyed and are accurately depicted on the plat signed by the Corps Regulatory Official identified below on _. Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. There are no waters of the U.S., to include wetlands, present on the above described project area which are subject to the permit requirements of Section 404 of the Clean Water Act (33 USC 1344). Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. j( The property is located in one of the 20 Coastal Counties subject to regulation under the Coastal Area Management Act (CAMA). You should contact the Division of Coastal Management in Morehead City, NC, at (252) 808-2808 to determine their requirements. Page 1 of 2 Placement of dredged or fill material within waters of the US and/or wetlands without a Department of the Army permit may constitute a violation of Section 301 of the Clean Water Act (33 USC § 1311). If you have any questions regarding this determination and/or,the Corps regulatory program, please contact Mr. David E. Bailey at (910) 251-4469 / Davld.E.Ba Iley2Qusace.ormv.mI C. Basis For Determination D. Remarks E. Appeals Information (This information applies only to approved jurisdictional determinations as indicated in B. above) This correspondence constitutes an approved jurisdictional determination for the above described site. If you object to this determination, you may request an administrative appeal under Corps regulations at 33 CFR part 331. Enclosed you will find a Notification of Appeal Process (NAP) fact sheet and request for appeal (RFA) form. If you request to appeal this determination you must submit a completed RFA form to the following address: District Engineer, Wilmington Regulatory Division Attn: David E. Bailey, Regulatory Specialist, Wilmington Regulatory Field Office 69 Darlington Avenue Wilmington, North Carolina 28403 In order for an RFA to be accepted by the Corps, the Corps must determine that it is complete, that it meets the criteria for appeal under 33 CFR part 331.5, and that it has been received by the District Office within 60 days of the date of the NAP. Should you decide to submit an RFA form, it must be received at the above address by August 28, 2010. "•It is not necessary to submit an RFA form to the District Office if you do not object to the determination in this correspondence." Corps Regulatory Official:® Date 29 June 2010 Expiration Date 29 June 2015 The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we continue to do so, please complete the attached customer Satisfaction Survey or visit htto://oer2.nwp.usace.armv.mil/survev.html to complete the survey online. Copy furnished: Joanne Steenhuis , NCDENR-DWQ, 127 Cardinal Drive Extension, Wilmington, NC 28405 Sbn7r,&de4 Via.' w-CA�s — Or . N I Channel Report Hydreflow Express by IntellsoMe Wednesday, Oct 6 2010, 322 PM LS -A Trapezoidal Highlighted Botom Width (ft) = 13.00 Depth (ft) = 0.19 Side Slope (z:1) = 3.00 Q (cfs) = 0.570 Total Depth (ft) = 1.00 Area (sqft) = 2.58 Invert Elev (ft) = 9.00 Velocity (f fs) = 0.22 Slope (%) = 0.50 Wetted Perim (ft) = 14.20 N-Value = 0.150 Crit Depth, Yc (ft) = 0.04 Top Width (ft) = 14.14 Calculations EGL (ft) = 0.19 Compute by: Known Q Known Q (cfs) = 0.57 Elev (ft) 11.00 10.50 10.00 9.50 Mi 8.5C Section Depth (ft) v CAR 0 2 4 8 8 10 12 14 18 18 2Q 4 2.00 1.50 1.00 0.50 to C- Reach (ft) ° 9gNC)AL\ �� Channel Report Hydreflow Express by IntelisoNe LS -B Trapezoidal Botom Width (ft) = 18.00 Side Slope (z:1) = 3.00 Total Depth (ft) = 1.00 Invert Elev (ft) = 9.00 Slope (%) = 1.00 N-Value = 0.150 Calculations Compute by: Known Q Known Q (cfs) = 1.38 Elev (ft) 11.00 10.50 10.00 9.50 t 4 Section 5 10 15 20 Reach (ft) Wednesday, Oct 0 2010, 4:02 PM Highlighted Depth (ft) = 0.22 Q (cfs) = 1.380 Area (sqft) = 4.11 Velocity (ft/s) = 0.34 Wetted Perim (ft) = 19.39 Crit Depth, Yc (ft) = 0.06 Top Width (ft) = 19.32 EGL (ft) = 0.22 25 30 Depth (ft) 2.00 1.50 1.00 0.50 AM -0.50 35 Hydrograph Summary Report Hydraflow Hydrographs by Intelisolve v9.2 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time Interval (min) Time to peak (min) Hyd. volume (tuft) Inflow hyd(s) Maximum elevation (ft) Total strge used (tuft) Hydrograph description 1 SCS Runoff 4.315 1 719 10,755 ---- ------ ------ Basin A 2 Reservoir 0.574 1 743 7,701 1 11.16 5,836 Route A 3 SCS Runoff 13.30 1 719 32.993 ---- ------ ------ Basin B 4 Reservoir 1.375 1 755 22,555 3 9.17 17,535 Route B „ruurrry, .PAN CAR o4z ", O : •FE§§ip'•• .. 0 4906 ��'•FNGIN4 • 4r (f "' g /VDA1 � Post Pond Design Hydroflow.gpw Return Period: 10 Year Wednesday, Oct 6, 2010 Hydrograph Summary Report Hydraflow Hydrographs by Intelisolve v9.2 Hyd. No. Hydrograph type (origin) Peak flow (cfa) Time Interval (min) Tlme to peak (min) Hyd. volume (cuft) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph description 1 SCS Runoff 7.034 1 718 17,826 ---- ------ ------ Basin A 2 Reservoir 2.950 1 729 14.767 1 11.49 7,815 Route A 3 SCS Runoff 23.60 1 719 58,661 ---- ------ ------ Basin B 4 Reservoir 5.497 1 733 48,209 3 10.07 26,470 Route B Post Pond Design Hydroflow.gpw Return Period: 100 Year Wednesday, Oct 6, 2010 NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor September 21, 2010 Greg Maready, President Parrot Landing, Inc. Swansboro, NC 28584 Division of Water Quality Coleen H. Sullins Director Subject: Request for Additional Information Stormwater Project No. SW8 100901 Parrot Landing Subdivision Onslow County Dear Mr. Maready: Dee Freeman Secretary The Wilmington Regional Office received and accepted a State Stormwater Management Permit Application for Parrot Landing Subdivision on September 10, 2010. A preliminary in-depth review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: Please provide a copy of the unsigned wetland delineation map submitted to the US Army Corps of Engineers Wet ponds may not be located in wetlands unless a permit to fill those wetlands has been obtained. Please locate each BMP and all swales in access/drainage easements, to be recorded with the final plat. 3. Please eliminate all direct discharges to SA waters. For projects subject to the 2008 coastal rules, which are within Y2 mile of and draining to SA waters, the discharge from the wet pond must be directed into a secondary BMP. If the pond is designed for 85% TSS removal, a VFS is also required. For 90% TSS ponds, the VFS can qualify as the secondary BMP if the consultant can demonstrate that the design storm effectively infiltrates within the filter and there is no discharge to surface waters. This option is to provide diffuse flow of stormwater at a non - erosive velocity to a vegetated buffer or other natural area that is capable of providing effective infiltration of the runoff from the design storm. a. Defining "Effective Infiltration": If a vegetated buffer or natural area meets the vegetated filter strip requirements as defined by the stormwater rules and the BMP Manual, then the design complies with the "effective infiltration" requirement of SL2008-211. A properly designed level spreader is required in order to deliver diffuse flow at a non -erosive velocity to the vegetated buffer or natural area. The design engineer must show that the soil type, vegetated cover, and slope of the vegetated buffer or natural area will facilitate the required effective infiltration either qualitatively or quantitatively. Sizing the filter strip area using the following equation is an example of how a design engineer can establish compliance with this requirement: Wilmington Regional Office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One Phone: 910-796-72151 FAX: 910350-20041 Customer Service: 1-871823-6748 North Carolina Internet:w .ncwaleiquality.org An Equal Opportunity 1 Aftimw6ve Action Employer ��������✓1 Parrot Landing, Inc. September 21, 2010 Stormwater Application No. SW8 100901 A= V/(2KT) _ (L)(Cos e) Where, A= Effective infiltration Area (ftz) V=Volume to infiltrate (ft') K= Hydraulic conductivity (in/hr) T= Dewatering time (up to 5 days) L=Length along ground surface (ft) O=Angle of slope of vegetated buffer or natural area The soil type and expected infiltration rate are unknown in the vegetated filter strip locations. In addition, the slopes are undefined in these areas. Please provide this information to establish these essential facts. 4. The permanent pool elevation must be above the lowest elevation of adjacent wetlands, and above the lowest elevation of adjacent wetlands. Topography in the wetlands area was not shown on the plans. Evaluate the need for a liner and/or berm/slurry wall to prevent dewatering the wetlands. 5. Further details for the parking and sidewalk dimensions are required such as number of parking spaces and their respective typical length and width, and typical length of sidewalk to the buildings. 6. Outlet flow from the ponds, either through a vegetated filter strip or through a bypass structure, must flow into the wetlands at a non -erosive velocity (</= 2 fps) for a 10-year storm event. Please show calculations. For the level spreader / filter strip for drainage basin "B", we are recommending that the level spreader be oriented to receive flow from the pond in a manner that does not involve making the runoff turn 90 degrees to get into the level spreader. Good level spreader design has the runoff entering the level spreader in -line with the pipe or swale delivering it to the level spreader. Also, the 10-year storm event must bypass the level spreader / filter strip. Please reference Chapter 8 of the BMP manual. 8. Please remember that a change to one number may have a domino effect on other numbers. Please check all plans, calculations and forms and make changes as needed. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to October 21, 2010, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail, email or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Page 2 of 3 1 Parrot Landing, Inc. September 21, 2010 Stormwater Application No. SW8 100901 Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 796-7215 or email me at steven.pusey@ncdenr.gov. Sincerely, Steve G. Pusey Environmental Engineer GDS/sgp: S:\WQS\STORMWATER\ADDINFO\2010\100901.sep10 cc: W. Randall Edens - RSC Engineering, PLLC Wilmington Regional Office Stormwater File Page 3 of 3 v w I fi j' f. En0lneerin0, PLLC PHONE: 910.270.9599 Fax: 910.270.9592 E-mail: rscen9lneerin9@charler.ne1 September 1, 2010 NCDENR — Division of Water Quality Attn: Ms. Kelly Johnson 127 Cardinal Drive Extension Wilmington, NC 28405 RECEIVED! RE: Parrot Landing Subdivision—Stormwater Response SEP 01 2010 RSC # 1002430 BY: Ms. Johnson, This is in response to your email dated 8/25/10 sent as a result of a preliminary review. Please see below for information about each item requested: 1.) Signature: Greg Maready is listed as the agent on the application as well as the Articles of Incorporation. However, only a president or vice president of a corporation can sign a permit. Please submit documentation that Mr. Maready holds one of these two titles. (Generally there are bylaws or some other official document that makes this distinction.) — Please see attached IRS Tax Form 2553 signed by Greg Maready noting his title as president. 2.) SHWT: - Please see attached soils report by Walter Giese with ARM. 1. Boring in Each BMP: Please submit a boring for each BMP in the location of the BMP. The two borings submitted look like they are near (or are possibly in) pond A. Please submit SHWT boring info in the location of each BMP. 2. Boring Elevations: Please submit the surface elevation (not just the depth) of each boring used to determine SHWT. 3.) Plans: 1. Project Area: Please show the entire area to be permitted on the plans (with distance and bearings lines). —Added to sheet C3. 2. Drainage Area Map: Please show the drainage area of each pond on the plans. — Drainage areas were shown on sheet C2, but they are now shown in green for clarity. 3. Wetlands Line: Where does the wetlands line go near the filter strip of Pond B? I see it on both sides of the filter, but those lines are not connected. — Sheet C3 shows this area of the wetlands. 4. Top of bank & buffer: Please label the TOB and the 50ft buffer of all surface waters. (If it is tidal, please show the mean high water or normal high water line.) — A 50' buffer has been added to Pitch Hole Branch and labeled as such. 5. Level spreader: One of the level spreaders is straight but has a curved filter strip? Please see page 8-14 of the manual and provide clarification as to how the grading supports this design. —The manual requires that the flow must be uniform. More grades have been added to show uniformity. 4.) SA No Discharge: You can use 90% ponds discharging to level spreaders/filter strips to satisfy the "no discharge" requirement of the 2008 rule, but there are a couple of qualifiers. Please clarify how the design meets the following: 1. If a vegetated buffer or natural area meets the vegetated filter strip requirements as defined by the stormwater rules and the BMP Manual, then the design complies with the "effective infiltration" requirement of SL2008-211. A properly designed LS is required in order to deliver diffuse flow at a non -erosive velocity to the vegetated buffer or natural area. The design engineer must show that the soil type, vegetated cover, and slope of the vegetated buffer or natural area will facilitate the required effective infiltration either qualitatively or quantitatively. —There is no discharge from the ponds (1 year, 24 hour) other than the orifice draw down which is only 0.05 cfs. Type of cover and grades have been added for clarity to demonstrate effective infiltration. 2. There is no minimum separation from the SHWT for the vegetated buffer or natural area, however the elevation of the vegetated buffer or natural area must be at or above the elevation of the SHWT in order to say that infiltration will occur. — Soils report indicates that this is not an issue. 3. The required 50-foot buffer may contain wetlands, in whole or in part. The buffer may also be cleared or graded. However locating a vegetated buffer or natural area that will be used for effective infiltration in a wetland constitutes a wetland impact. All impacts to wetlands must be approved by NC DWQ (401), USACE (404), and/or CAMA (coastal wetlands). If a permit to Hill the wetland is granted, the design engineer must provide calculations demonstrating that the wetland area can effectively infiltrate stormwater, as discussed above. —There are no wetland impacts. Please note the following items are being submitted along with this response letter: • Form 2553 (Election by a Small Business Corporation) • Revised "ONSITE BASIN B" Wet Detention Pond Calculations (page has been signed/sealed) • Revised Page 3 of Basin B O&M Agreement • (2) Sets of plans folded (sealed, signed and dated) • Soils Report If any additional information is required, please advise. Respectfully, .1� RSC Engineering W. Randall Edens, PE RF,EIVE SEP 01 2M pplied KeoourGe Management, PG. 31 August, 2010 _ RSC Engineering, PLLC Attn: Randall Edens, P.E SEP 01 2010 16310 US Hwy 17 IBY:-Hampstead, NC 28443_ Re: Storm Water Evaluation Parrot Landing SO Mr. Edens, Please find below a report referencing a soil and site evaluation for the above referenced . site, located at Queen's Creek Road in Swansboro, North Carolina. 1.0 I ntrod uctiori/Purpose The purpose of the soil and site evaluation was to determine the feasibility of disposing and/or storing storm water within appropriate storm water devices located on the site. 2.0 Methods (Refer to Figure 1) The site was evaluated using hand auger borings. Auger borings were made at varying locations throughout the site to a depth of at least 48 inches and profile descriptions recorded. The seasonal high water table was determined . by the indication of redoximorphic features and/or colors of chroma 2 or less (Munsell Color Book) at >2% of the soil volume in mottles or matrix of a horizon or horizon. subdivision. . 3.0 Resuits/Findings (Refer to Appendix A and Figure 1) The site was characterized by soils with a seasonal high water table and/or soil wetness condition that ranged from 18 inches to 38 inches from the natural soil surface as indicated. by the presence of redoximorphic features and/or colors.of chroma 2 or less (Munsell Color Book) at >2% of the soil volume in mottles or matrix R0. Box 882 Hampstead, NC 28445 910.270.2919 FAX 270.2988 31 August.2010 of a horizon or horizon subdivision. A detailed profile description for each boring . location is in Appendix A. 4.0 Limitations The areas analyzed as part of this investigation only provide isolated data sets and points and do not represent subsurface conditions at every location in the project area. Analyses and conclusions of this report, interpretation between data points, and subjective subsurface interpretation, may not be completely representative of all subsurface conditions. This investigation furthermore does not provide conclusive data on limits of impact or other interpolations where indicated by question marks or where otherwise qualified. Conclusions and recommendations of this investigation and report are based on the best available data in an effort to assist in the understanding, control and/or,.site planning and preparation. No guarantee is expressed or implied that new or additional data and/or scientific measures will not be required for ultimate solution of the existing project. Should you have any questions or concerns please do not hesitate to contact me at (910) 270-2919. Sincerely, \�3Atr;z�' IJ4' e , LIs.r Walter D. Giese, LSS Project Manager 1 Sgje o ber -�o(o S Q Ol tip\0 w-r Soil Boring S \ SB-2 U, w it, 6e4v. SB-3 38" g'.i' e�N SB-4 38. 3' elcv. Soil Wetness Condition noted to be 18" (lateral flow) • Apprordmate Soil Boring (SB) Location SHWT: Seasonal High Water Table QUEENS CREEK ROAD — ®'--im wf we v m.wcw w.�4f Q.v 0 O � TITLE: Parrott Landing kpir. lied Peeource Manaaement PC Soil Boring Location Q B 882, MamOtleatl. N 28"3 re122a2vivFM 2m29M JOB: SCALE: DATE: DRAWN BY: 10098 1 1 "= 100' 8/31 / 10 GY Appendix A RECEIVED SEP 01 2010 BY: Parrott Landinq Stormwater Infiltration Study Soil Profile Description and Ksat Data Swansboro, North Carolina August 30, 2010 Logged By: Walter D. Giese, NCLSS SB 1 Soil Description 0 - 6 inches Dark gray (10YR 4/1) loamy sand/sand, granular, very friable, non -expansive. 6 - 12 inches Very dark grayish brown (10YR 3/2) loamy sand/sand, granular, very friable, non -expansive. 12 - 18 inches Light olive brown (2.5Y 5/3) loamy sand/sand, granular, very friable, non -expansive. 18 — 30 inches Light gray (10YR 7/2) sand, granular, very friable, non -expansive. 30 - 34 inches Brownish yellow (10YR 6/6) loam, sub -angular blocky, friable, slightly expansive. 34 - 48 inches Brownish yellow (10YR 6/6) sandy clay loam, sub -angular blocky, firm, slightly expansive with light brownish gray (10YR 6/2) mottles. Soil Wetness Condition 18" (lateral movement) Seasonal High Water Table 34" RFIC SEP 01 2010 BY: Parrott Landing Stormwater Infiltration Study Soil Profile Description and Ksat Data Swansboro, North Carolina August 30, 2010 Logged By: Walter D. Giese, NCLSS SB 2 Soil Description 0 - 4 inches Dark grayish brown (10YR 4/2) loamy sand/sand, granular, very friable, non -expansive. 4 - 8 inches Light yellowish brown (10YR 6/4) loamy sand/sand, granular, very friable, non -expansive. 8 - 12 inches Yellowish brown (10YR 5/6) loamy sand/sandy loam, sub -angular blocky, friable to very friable, slightly expansive. 12 - 30 inches Light yellowish brown (10YR 6/4) loamy sand/sand, granular, very friable, non -expansive. 30 — 48 inches Yellowish brown (10YR 5/6) sandy clay loam, sub -angular blocky, firm, slightly expansive with olive yellow (10YR 6/8) and gray (10YR 6/1) mottles at 34" Seasonal High Water Table 34" Parrott Landing Stormwater Infiltration Study Soil Profile Description and Ksat Data Swainsboro, North Carolina August 30, 2010 Logged By: Walter D. Giese, NCLSS SB 3 Soil Description 0 - 3 inches Very dark grayish brown (10YR 3/2) loamy sand, granular, very friable, non -expansive. 3 - 20 inches Yellowish brown (10YR 5/4) loamy sand, granular, very friable, non -expansive. 20 - 27 inches Yellowish brown (10YR 5/6) loamy sand, granular, very friable, non -expansive. 27 - 29 inches Yellowish brown (10YR 5/6) sandy clay loam, sub -angular blocky, firm, slightly expansive. 29 — 38 inches Yellowish brown (10YR 5/4) sandy loam, granular, friable, slightly expansive. 38— 48 inches Dark gray (10YR 4/1) sandy loam, granular, firm, slightly expansive. Seasonal High Water Table 38" ]R]ECEIVED SEP 01 2010 BY: Parrott Landing Stormwater Infiltration Study Soil Profile Description and Ksat Data Swansboro, North Carolina August 30, 2010 Logged By: Walter D. Giese, NCLSS SB 4 Soil Description 0 - 2 inches Very dark grayish brown (10YR 3/2) sandy loam, granular, very friable, slightly expansive. 2 - 4 inches Brownish yellow (10YR 6/6) loamy sand, granular, very friable, non -expansive. 4 - 16 inches Yellowish brown (10YR 5/4) loamy sand, granular, very friable, non -expansive. 16 - 38 inches Light yellowish brown (10YR 6/4) loamy sand/sand, granular, very friable, non -expansive. 38-48inches Gray (10YR 5/1) loamy sand, granular, very friable, non - expansive. Seasonal High Water Table 38" EEC.EIVED SEP 01 2010 BY:____-- tee � iPDR@Illtt Aug.31. 2010 5:13PM MAREADY ASSOCIATES No.5354 P. 1 Font 2553 Election by a Small Business Corporation (Rev. December loon (under section 1362 of the Internal Revenue Code) OMB No. 1e45-014a Department of the traaawy ► See Parts II and III on page a and the Separate instructions. numb R"arwa Sarni" ► The corporation can fax this form to the IRS (see Separate Instructions). Note. This elactort to be an a corpetradmt can be accepted only if all the taste we met under who Miry Elea on page 1 of the instructbnt: all Shareholdare have agned the concert aatamant: an officer nee Sionad below; and the exact name and address of the Corporation and otnor required form Information are provided. Name (Sae instructions) I A Employer identierJtion number Type Number. Seamt. and form, or Sulle no, Of a P.O. box, See NSlruCli(rnS.) 3 Data incettponti or Print 1Y46 Phillips Loop Road March 3, 2010 City err town, state, end ZIP code C State of lnemporm,on D Check the applicable boxes) i1 the corporation, after applying for the EIN shown in A above, Changed Its LJ name or Lj address E Election is to be effective for tax year beginning (month, day, year) (see instructions) , . . . . ► 01 / 01 / 2010 Caution. A corporation (entity) making the election for its first tax year in existence will usually enter the beginning date of a short tax year that begins on a date other than January 1. F Selected tax year: (1) ® Calendar year (2) ❑ Fiscal year ending (month and day) ► (3) ❑ 52.53•week year ending with reference to the month of December (4) ❑ 52.53-week year ending with reference to the month of ► If box (2) or (4) is checked, complete Part II 0 11 more than 100 shareholders are listed for item J (see page 2), check this box it treating members of a family as one shareholder results in no more than 100 shareholders (see test 2 under Who May Elect in the instructions) ► ❑ H Name and title of officer or legal representative who the IRS may cell for more information I Telephone number of officer or legal representative Greg Maready, President l 1 (252)393.6311 If this S corporation election is being filed with Form 1120S, I declare that I had reasonable cause for not filing Form 2553 timely, and it this election is made by an entity eligible to elect to be treated as a corporation, I declare that I also had reasonable cause for not filing an entity classification election timely. See below for my explanation of the reasons the election or elections were not made on time (see instructions). ................................................................................................................................. I ........ ......... Under o or Qury, I at t I taro eranlnW ma tlLCfIOn, Mixing atcOrtlprying uxnedultl and mttmena, and to the Den of nM WgMeoaa and beef, it a Sign ne., eat a d empu. Here'President gn t a Thie Fa Paporwork Rettiledion Act Notice, see separate instructions. Cat. No. I(IMS Form 2150 IRS.. 12.2007) Johnson, Kelly From: Johnson, Kelly Sent: Wednesday, August 25, 2010 3:06 PM To: sonya@rscengineering.com' Subject: Parrot Landing Randall & Sonya, We received this application and I went through it this afternoon. I have a couple of questions for you: 1.) Signature: Greg Maready is listed as the agent on the application as well as the Articles of Incorporation. However, only a president or vice president of a corporation can sign a permit. Please submit documentation that Mr. Maready holds one of these two titles. (Generally there are bylaws or some other official document that makes this distinction.) 2.) SHWT: 1. Boring in Each BMP: Please submit a boring for each BMP in the location of the BMP. The two borings submitted look like they are near (or are possibly in) pond A. Please submit SHWT boring info in the location of each BMP. 2. Boring Elevations: Please submit the surface elevation (not just the depth) of each boring used to determine SHWT. 3.) Plans: 1. Project Area: Please show the entire area to be permitted on the plans (with distance and bearings lines). 2. Drainage Area Map: Please show the drainage area of each pond on the plans. 3. Wetlands Line: Where does the wetlands line go near the filter strip of Pond B? I see it on both sides of the filter, but those lines are not connected. 4. Top of bank & buffer: Please label the TOB and the 50ft buffer of all surface waters. (If it is tidal, please show the mean high water or normal high water line.) 5. Level spreader: One of the level spreaders is straight but has a curved filter strip? Please see page 8-14 of the manual and provide clarification as to how the grading supports this design. 4.) SA No Discharge: You can use 90% ponds discharging to level spreaders/filter strips to satisfy the "no discharge" requirement of the 2008 rule, but there are a couple of qualifiers. Please clarify how the design meets the following: 1. If a vegetated buffer or natural area meets the vegetated filter strip requirements as defined by the stormwater rules and the BMP Manual, then the design complies with the "effective infiltration' requirement of SL2008-211. A properly designed LS is required in order to deliver diffuse flow at a non - erosive velocity to the vegetated buffer or natural area. The design engineer must show that the soil type, vegetated cover, and slope of the vegetated buffer or natural area will facilitate the required effective infiltration either qualitatively or quantitatively. 2. There is no minimum separation from the SHWT for the vegetated buffer or natural area, however the elevation of the vegetated buffer or natural area must be at or above the elevation of the SHWT in order to say that infiltration will occur. 3. The required 50-foot buffer may contain wetlands, in whole or in part. The buffer may also be cleared or graded. However locating a vegetated buffer or natural area that will be used for effective infiltration in a wetland constitutes a wetland impact. All impacts to wetlands must be approved by NC DWQ (401), USAGE (404), and/or LAMA (coastal wetlands). If a permit to fill the wetland is granted, the design engineer must provide calculations demonstrating that the wetland area can effectively infiltrate stormwater. as discussed above. I go through each project when it comes in to ensure that all of the necessary paperwork has been submitted, and I also try to identify any small technical issues to resolve before we accept the project so that the review engineer assigned to this project can get through a full review. We will need the items above to be resolved before we can accept the application. When we find small items, we allow until COB the following day (Thursday) to submit the necessary information or we return the application (with the fee). I am not sure if these are large or small items. Are these items that can be resolved by COB tomorrow, or shall I return the application? Thanks, KJ *** My email has changed to kellv.p.iohnson@ncdenr.gov K,eUJohnsovL Kelly Johnson Environmental Engineer Division of Water Quality Stormwater Permitting 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Office: 910.796.7345 Fax: 910.350.2004 E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. High Density Residential Subdivisions Deed Restrictions & Protective Covenances J In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Stormwater Management Regulations, deed restrictions and protective covenants are required for High Density Residential Subdivisions where lots will be subdivided and sold and runoff will be treated in an engineered stormwater control facility. 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, _Greg Maready , acknowledge, 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 lot: 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 the Stormwater Management Regulations. 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 area per lot is_774 square feet. 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. OR, if the proposed built -upon areas per lot will vary, please REPLACE #6 above with the following: 6. The maximum built -upon area per lot, in square feet, is as listed below: Lot # BUA Lot # BUA Lot # BUA Lot # BUA 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. 7. Each lot will maintain a 30** foot wide vegetated buffer between all impervious areas and surface waters. **50 foot for projects located in the 20 coastal counties. 8. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be accomplished through a variety of means including roof drain gutters which drain to the street, grading the lot to drain toward the street, or grading perimeter swales to collect the lot runoff and directing them into a component of the stormwater collection system. Lots that will naturally drain into the system are not required to provide these additional measures. AUG 2 0 2010 Form DRPC-3 Rev.2 05Nov2009 Page 1 of 2 High Density Residential Subdivisions IN a Notary Public in the State of IN 1)V"1 ( mot rr V I I VI 2 County of I &I )1' I do hereby certify that _(—'YY °G' OdA i personally appeared before me this the Q day of ''l—M4 20 0 , and acknowledge the due execution of the foregoing instrument. Witness my hand and official seal, !/l ge4/' L SEAL Siggr dtur My Commission expires l� U-2 AUG202010 Form DRPC-3 Rev.2 05Nov2009 Page 2 of 2 DWQ USE ONLY . ni Date Rece'v Fee Paid Permit Number SO . — -1*6 Applicable Rules: ❑ Coastal SW -1995 Coastal SW - 2008 ❑ Ph II - Post Construction (select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan ❑ Other WQ Mgmt Plan: State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original 1. GENERAL INFORMATION 1. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Parrot Landing Subdivision 2. Location of Project (street address): 772 Oueens Creek Road City:Hubert County:NC Zip:28539 3. Directions to project (from nearest major intersection): NC 24 to Oueens Creek Road. Property will be down on the right. 4. Latitude:34* 67 047" N Longitude:770 18' 911" W of the main entrance to the project. H. 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. Spttcify 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): []LAMA Major ❑NPDES Industrial Stormwater ®Sedimentation/Erosion Control: 4.89 ac of Disturbed Area ❑404/401 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: AUG 2 0 2010 FormSWU-101 Version07Jun2010 Page Iof6 Ill. 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 vroiect): Signing Official & _.. _ ,.. -Ae (Sic .f-w -'ernw b.Contact information for person listed in item I above: Street Address:126 Phillips Loop Road City:Swansboro State:NC Zip:28584 Mailing Address (if applicable):PO Box 1174 City:Swansboro State:NC Zip:28584 Phone: (910 ) 326-6511 Fax: Email:ueg@mareadyapl2raisals.com 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 Owner/Organization: Signing Official & Title: b. Contact information for person listed in item 2a above: Street Address: City: State: Zip: Mailing Address (if applicable): Phone: Fax: 3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project: Other Contact Person/Organization: Signing Official & b.Contact information for person listed in item 3a above: Mailing Zip: Phone: ( I Fax: 4. Local jurisdiction for building permits: Point of Contact: Phone #: Form S WU-101 Version 07Jun2010 Page 2 of 6 IV. PROJECT INFORMATION 1. In the space provided below, hELefly summarize how the stormwater runoff will be treated. Stormwater runoff will be captured and treated via (2) wet detention ponds and then released via filter strip/vegetated swales 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 White Oak River basin. 4. Total Property Area:10.3 acres 5. Total Coastal Wetlands Area: 0 acres 6. Total Surface Water Area: 0 acres 7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project Arew:10.3 acres Total project area shall be calculated to exclude the following: the normal pool of i nyou��nded structures, the area between the banks of streams and rivers, the area below the Normal Hi h Water (NHW) line or Mean High Water (MHW) line, and coastal wetlands landward from the NHW (or =H line. The resultant project area is used to calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHW) line may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = }b 83 % 6, 01 °k 9. How many drainage areas does the project have?2 (For high density, count 1 for each proposed engineered Stormwater 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 Drainage Area A Drainage Area B Drainage Area Drainage Area Receiving Stream Name Parrot Swamp Parrot Swamp Stream Class * SA; HQW SA; HQW Stream Index Number * 1941-164 19-41-164 Total Drainage Area (so 31388 124612 On -site Drainage Area (so 0 106078 Off -site Drainage Area (so 0 1 18534 Proposed Impervious Area** (so 19878 58782 % Impervious Area** total 63.33 47.17 I-�T Impervious- Surface Area Draina a Area A Drainage Area B Drainage Area _ • r�_ma a Area _ On -site Buildings/Lots (so 8667 14001 1 On -site Streets (so 10185 31384 On -site Parkin (so 0 0 0 On -site Sidewalks (so 1026 2874 Other on -site (so 0 3801 Future (so 0 0 Off -site (so 0 6722 Existing BUA*** (so 0 0 Total (so: 19878 58782 " Stream Class and Index Number can be determined at: h�:dportal.ncdenr.org/web/wq[ps/csu/classi cations Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-101 Version 07Jun2010 Page 3 of 'Report only that amount 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. as built survey Projects in Union County: Contact DWQ Central Office staffto check iifthe project is located within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B .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 httl2://portal.ncdenr.org/web/wq/ws/su/bmp-manual. Vl. 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://12ortal.ncdenr.org/web/wq/ws/su/statesw/forms dots. 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.ncdenr.org/web/wq/ws/su/mal2 .) 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://1ortal.ncdenr.org/web/wg/ws/su/statesw/forms does. 1. Original and one copy of the Stormwater 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 h_ptt ://www.envheiR.org/1ages/onestopexoress.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. REC� e. North arrow. f. Scale. AUG i g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevatio�y impounded structures, the banks of streams and rivers, the MHW or NHW IinA iaal waters, and any coastal wetlands landward of the MHW or NHW lines. o 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 bearings & 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. in. 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. sl�4 WED 0 2010 Form SWU-101 Version 07Jun2010 Page 4 of 6 o. Drainage areas delineated (included in the main set of plans, not as a separate document). p. Vegetated buffers (where required). Gy 9. 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"xll" copy of the MRCS 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: 3371 Page No: 251 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 21-1.1003(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/Cori2orations/"CSearch.aspx VIL 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 httu:/ /12ortal.ncdenr.org/web/wq/ws/su/statesw/forms_docs. Download 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: W. Randall Edens, PE Consulting Firm: RSC Engineering, PLLC Mailing Address:16310 US Hwy 17 City:Hampstead State:NC Zip:28443 Phone: (910 ) 270-9599 Email:soiiya@rscengineering.com Fax: (910 ) 270-9592 IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) I, (print or type 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 type name of person listed in Contact Information, item 1a) with (print or hype name of organization listed in Contact Information, item la) to develop the project as currently pro osed. A copy of the lease agreement or pending property sales contract has been provided wit}`tile'ilI r�ii iEalffiUh n�i i ates the party responsible for the operation and maintenance of the stormwater system. yu� I � AUG 2 0 2010 Form SWU-101 Version 07Jun2010 Page 5 of 6 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 do hereby certify that before me this _ day of Date: County of personally appeared and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission expires X. APPLICANT'S CERTIFICATION 1, (print or type narne ofperson listed in Contact Information, iteni 1n) Greg Mareadit 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 covenau will be recorded, and that the proposed project complies with the requirements of the applicable stormw t r riles and 15 NCAC 21-1.1000, SL 2006-246 (Ph. II - Post Construction) or SL 2005-211. Signature: / Date: 6 I, i�IO a Notary Pub ' for the State of County of 154Q6 —do hereby certify that _-](-e- C- MO reJ91y1eq personally appeared before me this g day A-Ar- 2 10, and acknowledge the due execution pf the application for a storm water permit. Witness my hand and official seal, SEAL Yly commission expires /3 -1 - ao& RECETV'ED AUG 2 0 2010 BY`. Form SWU-101 Version 07Jun2010 Page 6 of 6 Parrott Landing Stormwater Infiltration Study Profile Description and Ksat Data Swansboro, North Carolina August 30, 2010 ged By: Walter D. Giese, NCLSS SB 4 (cs 3) Soil Description 0 - 2 inches Very dark grayish brown (10YR 3/2) sandy loam, granular, very friable, slightly expansive. 2 - 4 inches BIrownish yellow (10YR 6/6) loamy sand, granular, very friable, 4 - 16 inches Yellowish brown (10YR 5/4) loamy sand, granular, very friable, 16 - 38 inches Light yellowish brown (10YR 6/4) loamy sand/sand, granular, very friable, non -expansive. 38 —48inches Gray (10YR 5/1) loamy sand, granular, very friable, non - Seasonal High WaterjTable 38" Soil Description 0 - 4 inches M fru 4 - 8 inches I Lil fru 8 - 12 inches YE bli 12 - 30 inches Lil fru =48inches YE fin (1 Seasonal High Water j Parrott Landino Stormwater Infiltration Study Profile Description and Ksat Data Swansboro, North Carolina August 30, 2010 By: Walter D. Giese, NCLSS SB 2 (Ls q) grayish brown (10YR 4/2) loamy sand/sand, granular, very non -expansive. yellowish brown (10YR 6/4) loamy sand/sand, granular; very non -expansive. ish brown (10YR 5/6) loamy sand/sandy loam, sub -angular , friable to very friable, slightly expansive. yellowish brown (10YR 6/4) loamy sand/sand, granular, very non -expansive. Nish brown (10YR 5/6) sandy clay loam sub -angular blocky, slightly expansive with olive yellow(0YR 6/8) and gray R 6/1) mottles at 34" M„ Name: I Received Rule(s) Subject (check all that apply): Symbols for completing form: 'v'= Yes/0K; ' x'= No/Deficient 'n/a' or T or'/' ❑ 1995 Coastal �008 Coastal ❑ Phase II ❑ Universal Paperwork: R Check for $505 (must be no older than 6 months) --./❑ Application form with correcUoriginal signatures (original plus 1 copy). If Corporation or LLC also: o Print the info from the NCSOS o Either, 1.) The applicant is listed on the NCSOS with his/her correct title or, 2.) A notarized letter of authorization has been provided: IaDo —�❑ Supplements (1 original per BMP). BMP type(s): c(O%NO'S �b 4rl .C4i-ri QS ®KO&M with correct/original signatures (1 original per BMP, except level spreaders/filter strips and swales) @'Deed restrictions (if outparcel or subdividing) (original plus 1 copy) o Deed restriction template (signed and notarized) or o Proposed Declaration of Covenants and Restrictions (signed and notarized) �❑ Soils report identifying the SHWT 0-'Tupporting calculations, signed & sealed (if necessary) 3YAeceiving stream classification: 6R*-,h \.� , If SA or ORW also: V1\c"trf _ '/1 t'(111e ° q,N 7o o SA: USGS topo map with the site, the receiving waters and the %2 mile radius shown to scale. o ORW: 575 ft of MHWL for Area of Environmental Concern and max BUA per rule. ..Er Modifications: 1.) If built: Designer's Cert., 2.) If partially built: Partial Cert., 3.) If not built: No Cert. needed. Development Type (check all that apply): D,' Residential or ❑ Commercial ❑ Deed restrictions match? GI- Subdivision or ❑ Single Lot ❑ Deed restrictions match? EVHigh Density or ❑ Low Density LI Deed restrictions match? n14 ❑ Offsite project ❑ Redevelopment ❑ Modification ❑ Exempt r�q❑ NCG02 (bulkhead) ❑ NCG03 (clear/grade) ❑ NCG04 (linear) Density: LYBUA calculations include common areas, clubhouse, sidewalks, etc. IB'BUA %: 16AS , Matches high/low density requirement for rule and receiving stream class. O'' No obvious math errors &'�If High Density: Design storm correct for rule and receiving stream class. Plans, signed and sealed (2 sets): QL5 IS ❑'Two sets received �l�Cayout (with proposed BUA dimensions) but fry pp// Kgrading �� ❑ Drainage area map (all HD systems & curb outlet swales) ��S � iclnity map — - 5[� Project Boundaries t egend t ' Wetlands: Q•�-1V� 'S o Delineated on plans o "No wetlands onsite" on plans �,k'e ❑ Details: 6'0* o Roads o Gel -de saw- o Curbing o Sidewalk o BMPs/ Level spreaders/ Filter strips/ Curb outlet swales o Buildings (Apts or Condos) Offsite Projects: ❑ Desig s Certification has been submitted for the Offsite BMP receiving the runoff from the project. ❑ D restrictions have been recorded and a copy submitted for the Offsite BMP permit. ❑ of size has not changed from what was approved under the Master Plan. Correct lot number is referenced on the supplement form. ❑ Offsite system is in compliance with its permit, if known. Soils report: SHWT, soil type, and expected infiltration rate are provided. ❑ DWQ has conducted a site visit? Date: Viiet Ponds: Permanent Pool Meets One of the Following: ❑ Is located no lower than 6" below the estimated SHWT. ❑ Incoming groundwater is quantified and evaluated, AND Storage volume verified, AND Outlet evaluated for free t� drainage to the receiving waters under SHWT conditions. Decision (check one): ❑ Complete: Return file to admin (Jo Casmer) to log in. (Stamped in received date = BIMS date) ❑ Slightly incomplete: E-mail consultant, request information to be returned within one business day (24 hours after request. Info requests on Friday, allow a return on the following business day). If info not returned, issue an application return letter and give everything to admin. (Add info received date = BIMS date) Q. Substantially incomplete: Issue an application return letter and give everything to admin. .. I � ��� :. 1. .. r . ..:1 ... .. ..p: � ..i ._p_1 .. (�� i. t ` .r i� .:i y � �' '- _ .r