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HomeMy WebLinkAboutSW1080802_HISTORICAL FILE_20141007STORMWATER. DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. Sw 4&1� DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE DOC DATE Zy YYYYMMDD Herbert, Laura C From: Matt King <mrking1969@hotmail.com> Sent: Tuesday, October 07, 2014 2:25 PM To: Herbert, Laura C Subject: Re: Braewood Subdivision Post -Construction Stormwater Permit - SW1080802 Thank you for the information. I am under the weather today, but will fill this form out and get it back to you. Matt Sent from my Verizon Wireless 4G LTF, DROID "Herbert, Laura C" <laura.herbert a,ncdenr. v> wrote: Mr. King, was given your contact information by Ms. Natalie Berry, Henderson County. I did try to contact you at (828)243-0087, but got an incorrect number, so I am sending you an email. I am contacting you concerning an existing state stormwater permit for the Braewood Subdivision located in Henderson County. My understanding is that you are now owner of this property. This project, previously permitted as Braewood Subdivision, has a state stormwater permit issued to Mr. Hilton Swing for post -completion stormwater. I have attached the permit for your review, and would encourage you to come and review our files including the approved plan if you do not have one on file. If you are planning on completing this development as permitted you will need to transfer the existing stormwater permit to your name using the attached form. If you are going to development a different plan than what is currently permitted, you will be required to apply for and receive a Post -Construction Stormwater permit from Henderson County. Ms. Natalie Berry can assist you with this process. If you have any questions regarding transferring the stormwater permit, please contact me at either the telephone number below, or by email. In addition, it is my understanding that some land -disturbance (logging) has taken place on the site. If the location of the wetlands has not been marked in the field, this should be done prior to any additional land -disturbance at the site. There may also be additional requirements through the Division of Water Resources (Tim Fox) and the US Army Corp of Engineers (William Elliott) regarding the development of this property because of the wetlands. You are encouraged to contact these folks for this information. I have copied both on them on this email. We appreciate your cooperation in these matters, and look forward to working with you. Regards; Laura Laura Herbert, P.E. Regional Engineer Division of Energy, Mineral, and Land Resources - Land Quality Section NCDENR-Asheville Regional Office 2090 US Highway 70 Swannanoa, NC 28778 Tel:828-296-4500 Fax:828-299-7043 http://Portal.ncdenr.org/web/Ir Notice: E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and therelbre may be disclosed to third parties unless the content is exempt by statute or other regulation. ........... Hw i FINANCIAL RESPONSIBILITYIOWNERSHIP FORM SEDIMENTATION POLLUTION CONTROL ACT HENDERSON COUNTY ENGINEERING DEPARTMENT SOIL EROSION AND SEDIMENTATION CONTROL DIVISION No person may initiate any land -disturbing activity on one or more acres as covered by the Act before this form and an acceptable erosion and sedimentation control plan have been completed and approved by the Land Quality Section, N.C. Department of Environment and Natural Resources. (Please type or print and, if the question is not applicable or the e-mail and/or fax information unavailable, place NIA in the blank.) Part A. - Project Name �� _ '.r,: :.•_?,.:,.z 2. Location of land -disturbing activity: County`'. �` /" :`?,.' c;_ City or Townships%�f Address of Project: Latitude ? Longitude 3. Approximate date land -disturbing activity will commence: J� 2 , / 4. Purpose of development (residential, commercial, industrial, institutional, etc.): �: G'T 5. Total acreage disturbed or uncovered (including off -site borrow and waste areas): 6. Amount of fee enclosed: $ /tC/ The application fee of $100.00 per acre (rounded up to the next acre) is assessed without a ceiling amount (Example: a 9.3-acre application fee is $1000.00). 7. Has an erosion and sediment control plan been filed? Yes ✓ No Enclosed ^t ,rid r_r 8, Person to contact should erosion and sediment control issues arise during land -disturbing activity: Name E-mail Address Current Mailing Address Current Street Address City State Zip City State Zip Telephone:7r` G��r- :J' %` Cell # Landowner(s) of Record (attach accompanied page to list additional owners) NOTE: Must match Henderson County Land records or provide a recorded deed: f Name Telephone Fax NUber Current Mailing Address Current Street Address FL-��Gtiz City State Zip City State Zip Form HC FRO.doc Revised 6-17-2013 0 ................. I ..... .19 0 Part B. 1. Person(s) or firms who are financially responsible for the land -disturbing activity (Provide a comprehensive list of all responsible parties on an attached sheet) NOTE: The signature of a corporation or LLC must be a listed member on the formation documents on file with the state office. iit, /7V 16AI-T / pld 9 - M-o--r M A r L- Name E-mail Address Current Mailing Address Current Street Address f Lr -r-C.Ir'�4L 46' i2��72 City State Zip City State Zip Telephone 2. (a) If the Financially Responsible Party is not a resident of North Carolina, give name and street address of the designated North Carolina Agent: Name Current Mailing Address E-mail Address Current Street Address City State Zip City State Zip Telephone (b) If the Financially Responsible Party is a Partnership or other person engaging in business under an assumed name, attach a copy of the Certificate of Assumed Name. If the Financially Responsible Party is a Corporation, give name and street address of the Registered Agent: (Rarely applicable) Name of Registered Agent Current Mailing Address E-mail Address Current Street Address City State Zip City Telephon Form HC FRO.doc Revised 6-17-2013 State Zip ............. ....... •10 #�IOZ 1 An �(a•� 1 R irf : s` All llI.�� I, It The above information is true and correct to the best of my knowledge and belief and was provided by me under oath (This form must be signed by the Financially Responsible Person if an individual or his attomey-in-fact, or if not an individual, by an officer, director, partner, or registered agent with the authority to execute instruments for the Financially Responsible Person). I agree to provide corrected information should there be any change in the information provided herein. 1-4417/f( L,, /?, Kr Al 9 Type or print name /;G' xz Signature Title or Authority S.Z2- �y Date a Notary Public of the County of da V W07) d State of Qorth Carolina, hereby certify that m�44(0 ! n appeared personally before me this day and being duly sworn acknowledg,4d that the above form was executed by him. + Witness my hand and notarial seal, this J� day of , 20 ! T Notary I ,� � • cn `� My commission expires /� r Form HC FRO.doc Revised 6-17-2013 DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEERS 151 PATTON AVENUE ROOM 208 ASHEVILLE, NORTH CAROLINA 28801-5006 PIMA To ATITNTIO'Y 01: October 6, 2014 Regulatory Division Morgan family Investments, LLC Mr. Thomas R. Morgan 416 Stone Maven Drive Waynesville, North Carolina 28786 Dear Mr. Morgan, It has come to the Corps of Engineers attention that Morgan Family Investments, LCC has recently purchased and plans to develop the Braewood tract at 1094 West Blue Ridge Road in Flat Rock, Henderson County North Carolina. The Department of the Army (DA) issued a general permit verification authorizing impacts to waters of the U.S. (WoUS) at this property in April 2010 (Action ID 2006-40018) to the previous owner of the property for activities associated with construction of a residential development. This permit verification has expired and none of the authorized impacts were been constructed. The purpose of this letter is to notify you there is no valid DA permits for impacts to WoUS at this property. Please be aware, the past permit verification required restrictive covenants for conservation areas to be established on the property and to maintain these areas in their natural state in perpetuity. The covenants were to aid in the protection of a significant Southern Appalachian Bog ecological community. Any work at this property which will result in impacts to jurisdictional WoUS may require DA authorization pursuant to our regulatory authority under Section 404 of the Clean Water Act (CWA). Under Section 404 of the CWA, DA authority regulates discharge of dredge or fill material into WoUS. Activities involving the discharge of fill material in WoUS without authorization by a DA permit are a violation of Section 301 of the Clean Water Act (33 U.S.C. 1311). If you have any questions, please contact me at (828) 271-7980 extension 232. Sincerely, David Brown, PG Regulatory Specialist/Geologist Copy: Matt King — King Land Development, LLC 23 Snelson Drive Asheville, NC 28806x / 3 Murrough Drive, 13iltmore Lake, NC 28715-8971 Herbert, Laura C From: Herbert, Laura C Sent: Monday, October 06, 2014 4:41 PM To: 'Goetz, Anita' Cc: Bryan Tompkins; 'Natalie Berry'; Riddle, Shawna; Randall, Mike Subject: RE: King Creek Bog Location/Landowner Map and Braewood Development Plan as requested for Permit SW-1080802 Attachments: Permit and Plan Summary.pdf Anita, See the attached copy of the first couple of pages of the SW permit (issued November 5, 2008) and an overview of the approved plan (with the wetlands outlined in blue). The new owner needs to transfer the permit and needs to follow the approved SW plan. We have a copy here in ARO, in case he does not have a copy. This was permitted as a post construction 5W permit, so I am trying to run down the history on that. (Natalie, you may can provide some historical perspective on this?). Are they just now clearing for the subdivision? Anita, if you have the current owner's contact information, we can contact him directly to discuss his responsibilities wrt the stormwater permit. Thanks, Laura Laura Herbert, P.E. Regional Engineer Division of Energy, Mineral, and Land Resources - Land Quality Section NCDENR-Asheville Regional Office 2090 US Highway 70 Swannanoa, NC 28778 Tel:828-296-4500 Fax:828-299-7043 http://Portal.ncdenr.org/web/Ir Notice: I; -mail correspondence to and from this address may be sub.iect to the North Carolina Public Records Law and therefore may he disclosed to third parties unless the content is exempt by statute or other regulation. From: Goetz, Anita [mailto:anita goetz@fws.gov] Sent: Monday, October 06, 2014 4:25 PM To: Herbert, Laura C Cc: Bryan Tompkins Subject: King Creek Bog Location/ Landowner Map and Braewood Development Plan as requested for Permit SW- 1080802 1-11 Laura, Thanks for looking into permit for this so we might review the stormwater plans for this development. King Creek Bog is owned by three entities. Matt King/Morgan Family Investments recently purchased Braewood failed development at auction (once owned by Swing/then `TD Bank foreclosed). The maps attached focus on the Potts property (they own a significant portion of the bog), where we are funding a bog restoration/management project. We have also funded management for invasive, exotic plants on Rick Merrill's property (also part owner of King Creek bog) in past years. We are very concerned about storm water/contaminants entering bog, changing the chemistry of site (bogs are nutrient poor), and impacting negatively rare species. This bog contains occupied habitat significant for two rare plants that are critically endangered and protected under the Endangered Species Act. If you have an approved plan that we can review, it will help us to determine the type of impacts we might expect from this development, and we hope in the future to work with the developer and future landowners to reduce these impacts to King Creek bog. Note that the FWS restoration program I oversee focuses on mountain bog management and conservation, and may offer incentives to landowners (technical assistance and funding) to restore and manage mountain bogs, and as well as treat stormwater through LID practices, on their property. Please let me know if you need anything else from me. If you plan to visit the site and would like someone from this office to accompany you, please let me know. Thanks Laura, Anita Anita Goetz U.S. Fish and Wildlile Service 160 Zillicoa Street Asheville, NC 28801 anita oetz ofws.go 828-258-3939, ext. 228 Braewood Subdivision - Stormwater Project 1W 1080802 Subject: Braewood Subdivision - Stormwater Project No. SW 1080802 From: "Clint Link" <clink@flohut.com> Date: Thu, 2 Oct 2008 10:20:28 -0400 To: "'Mike Randall"' <Mike.Randali@ncmail.net> CC: <hilton@braewoodnc.com>, "'Clement Riddle"' <cement@cwenv.com> Mike, As a follow-up to our conversation regarding the stormwater management plan for the subject project, we have made several revisions to our plan in effort to address your comments provided in your August 28th letter. While several of your comments (comments 1-3) pertained specifically to the wet detention pond we are proposing for Phase III of this project, comments 4 & 5 addressed issues critical to enable us to permit this project as a low -density development. Based your comments and our follow-up conversation, the specific issues at hand with regards to permitting this project as a low -density development dealt with transporting the stormwater runoff through natural or vegetated conveyances. Upon taking another took at the project, we do not have any problems with satisfying your comments regarding the wet detention pond. Relative to the stormwater conveyance, we have taken another look at the project and have found several areas where it was practicable to utilize grass swales & ditches as opposed to storm drain culverts as originally proposed. In our prior conversation, we discussed two areas of primary concern where we needed to evaluate this. I'm pleased to say that I think we have sufficiently addressed one of these areas and while we do have some limited options for the other area, the options are less than ideal and we feel would adversely impact the character of the development. I hope you'll find that the changes we have made will provide you the comfortable level you need to move forward with the low -density permit. In the event you still have reservations towards treating this as a low -density development, it would obviously greatly affect the permit application and final design. As we discussed, to avoid any further time and delay to this permitting process, we would like to resubmit our revised plans to you as a preliminary submittal. While we feel we have sufficiently addressed your comments, we would like your concurrence prior to revising our drainage calculations and report. I will be forwarding these preliminary plans for your review with a more detailedsummary of the changes we have made and specifically how we have addressed your comments. You should receive these plans early next week. We certainly appreciate your cooperation and flexibility in working with us on this project. If we determine we have properly addressed your concerns with these plan revisions, we will provide you with a formal resubmittal of the project promptly upon getting your concurrence. Clinton W. Link Office Manager Florence and Hutcheson, Inc. 16 Wellington Avenue Greenville, SC 29609 clink(q)_flohut.com ph: 864.233.5425 fax: 864.233.5435 mobile: 864.303.2741 www.flohut.com This message is intended exclusively for the individual or entity to which it is addressed. This communication may contain information that is proprietary, privileged or confidential. If you are not the named addressee, you are not authorized to read, print, retain, copy, use or disseminate this message or any part of if. If you have received this message in error, please delete all copies of this message and notify the sender immediately kindly replying to this e-mail. 1 of 2 10/3/2008 7:57 AN Braewood Subdivision in Henderson County • 0 ~ Subject: Braewood Subdivision in Henderson County From: Kevin Barnett <Kevin.Barnett@ncmail.net> Date: Fri, 22 Feb 2008 10:22.08 -0500 To: Mike Randall <Mike.kandall@ncmail.net> CC: roger edwards <Roger,Edwards@ncmai1.net>, Starr Silvis <Starr.Silvis@ncmail.net> Hi Mike: Hope you are well? I have looked over the Army Corps application for utility crossing of wetlands in order to install stormwater ponds for the Braewood project. It appears that the stormwater features will be installed right on the edge of the adjacent creek and the piping will have a strong possibility of draining the wetland. Ed Swartzman (Natural Heritage Program) has reviewed the site and found both state and federal species (plant and animal) in these wetlands (including a single shrub species where it is the only known population in the state). The installation of these utility crossing to facilitate stormwater management will likely impact / remove the best use of the wetland and eliminate the existence of these threatened and endangered species. Due to the project only being a utility crossing, depending on which Nationwide Permit is issued by the Army Corps of Engineers, the State will likely have no input into this project from the 401 program. We are awaiting a decision from the Corps on this. After a review of the plans, it appears that creative / alternative stormwater treatment facilities (such as rain gardens) can be implemented while eliminating the need for several of the floodplain wetland impoundments. Please feel free to contact me when you see the application for this project. Best regards, Kevin "The time is always right to do what is right" Martin Luther King, Jr. Kevin Barnett - Kevin.Barnett@ncmail.net North Carolina Dept. of Environment and Natural Resources Asheville Regional Office Division of Water Quality - Water Quality Section 2090 U.S. 70 Highway Swannanoa, NC.28778 . Tel: 828-296-4500 Fax: 828-299-7043 Kevin Barnett <Keyin.l3amett(@ncma11.net> NC DENR - Asheville Regional Office Division of Water Quality - Water Quality Section 1 of 1 3/24/2008 3:28 PM WA r�qQ,✓ Hilton Swing, Owner Braewood, LLC P.Q. Box 346 East Flat Rock, North Carolina 28726 Dear Mr. Swing: Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Coleen If. Sullins Director Division of Water Quality August 28, 2008 Subject: Request for Additional Information Stormwater Project No. SW 1080802 Braewood Subdivision Henderson County The Division of Water Quality Central Office received a Stormwater Management Permit Application for the subject project on August 5, 2008. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater;review: . 1. Please provide information on how the SHWT was established. Information on the seasonal high water table (SHWT) need to be provided. If the SHWT is below the permanent pool elevation (PPE), then a liner will need to be provided in order to maintain the permanent pool. If a clay liner is proposed, then a minimum 4-inch layer of topsoil shall be provided on the vegetated shelf for planting. 2. Please provide a detailed landscaping plan for wet pond. The planting plan must be prepared by a qualified design professional licensed in North Carolina. The landscaping plan for a stormwater wet detention basin should provide specifications for the selection of vegetation, its installation, and the post -installation care for the vegetated shelf, the 3:1 side slopes, the vegetative filter strip, and the immediately surrounding areas. 3. The orifice configuration provided does not provide for adequate maintenance access. With the "tee" type configuration, the small orifice opening should be provided at the bottom of the "tee" underwater so that a rod may be used to unclog it. 4. Please provide details of road B, curb outlet systems and swales. Side slopes of conveyance swales not seeking credit removal must be no steeper than 3:1. (See BMP Manual Chapter 14, page 14-3. Sheet 5 of 5 shows a 2:1 slope). Ow N,Qo�tthCaroina r/Vllt!ld lly North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone (919) 807-6300 Customer Service Internet: www.newaterquality,org location: 512 N. Salisbury St. Raleigh, NC 27604 Fax (919) 807-6494 1-877-623-6748 An Equal OpporlunilylAttirmative Action Employer— 50% Recycled/10% Post Consumer Paper 0 5. The project does not meet the low -density requirement to transport stormwater runoff primarily through vegetated conveyances. Low -density projects should not have a discrete stormwater collection system as defined by 15A NCAC 2H.1002(18). Under ' I5A NCAC 2H 1002(18) a stormwater collection system means any conduit, pipe, channel, curb or gutter for the primary purpose of transporting runoff. Please note that this request for additional information is in response to a preliminary review. The requested information should be received by this Office prior to October 3, 2008, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other 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 SW I080802 on all correspondence. 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 (919) 807-6374. Sincerely, Mike Randall Environmental Engineer Stormwater Permitting Unit cc: Mr. Clint Link, P.E., Florence & Hutchenson Asheville Regional Office Sto mxw"�ater Peei3NHtidj UniVFiles6 El Application Completeness Review First Submittal ❑ Re -submittal Date Received: Date Reviewed: $ 6 OS Development/Project Name: BRAEODM5 Dt V I S 1 TEA} _ Receiving stream name CAGE)-- classification: _ff By M.VA%30A.LL For post -'construction requirements, a program will be deemed compliant for the areas where it is implementing any,of the following programs: WS-1, WS-II, WS-111, WS-IV, HQW, ORW, Neuse River Basin NSW,•Tar-Pamlico River Basin'NSW, and the Randleman Lake Water Supply Watershed Nutrient Management Strategy.. - Projects that require a 401/404 within'an NSW require 85% TSS; 30% TN and 30% TP removal. tito IV a T&E Species (Goose Creek, Waxhaw Creek or Six Mile Creek Water Sheds):, VQA' Latitude and Longitude: 55 16 oo -8Z Z.S 4S Jurisdiction Project Address: 1AE001IM50N Ca:-- io94 WEST 8u1,6 R1QGr mive. frL&t rR&0< ,-11L' Engineer name and firm: FJA9ZNcq $ NVTC14 So4, lr e- la' Low Density (no curb and gutter) mow Density with curb and gutter outlets 4n lHigh Density ❑ Other 12r' 401/404 impacts t9p surface waters, wetlands, and buffers (add language to cover letter and/or addinfo letter) &e' BUA '- L! a L.. AVOiOEp to- Check for $505.00 included W� LArJpS sTitEAM CR,aSSi+JGS Lo'-Original signature (not photocopy) on application Legal signature (Corporation-VP/higher, Partnership -General Partner/higher, LLC-member/manager, Agent). Check spelling, Capitalization, punctuation: http://www.secretary.state.ne.us/corporations/thepage.aspx wn agent signs the application, a signed letter of authorization from the applicant must be provided ch includes the name, title, mailing address and phone number of the person signing the letter. or subdivided projects, a signed and notarized deed restriction statement + Sealed, signed & dated calculations Le1�Correct supplement and O&M provided for each BMP on site (check all that were provided & number of each) ❑ Bioretention ❑ Rooftop Runoff Management ❑ Dry Detention Basin ❑ Sand Filter . . ❑ Filter Strip ❑ Stormwate�'Wetland . ❑ Grass Swale 12lO et Detention Basin 2. ❑ Infiltration Basin d L'ow-Density 1 - . : ❑ Infiltration Trench ❑ Curb Outlet ❑ Level Spreader ❑ Off -Site : ❑ Permeable Pavement ❑ NCDOT Linear Road ❑ Restored Riparian Buffer ll.' Two sets, of sealed, signed & dated layout & finish grading plans with appropriate details AAiSsiA L� Narrative Descriptibb of'sto�mwater management provided POAA 3 � Soils report provided 21�i9 00 } P p NDTc Ta�O MAP Prl.�r,d�.l �5 F�1�lr ? � �! �� Pcxll ! 'Wetlands delineated or a note on the plans that none exist on site and/or adjacen property L2-�betails for the roads, parking area, cul-de-sac radii, sidewalk widths, cuib and• guttei;• Mt55in i- C:1 r Q- Dimensions & slopes provided 1U_­Drainage areas delineated &0Y15ervious and impervious reported for each LEh teas of high density 'U- Inspection and maintenance agreements provided ❑ Application complete MBIApplication Incomplete Returned: (Date) Comments May 14, 2008 Revision cd cps' a>v '��:►r, spa BRA, tJp.GE ARx`AS A 1 r AZ, A3 , A4 � AS, A4 Al 81 6z Jr- I . Bup► % 18,1. 6.0 4..3 10 14.4 24. Z IZ.4 Z a �•.. GuaB � 6urT1;"tZ trio No 1v0 Noy No ES ems. � some- ?&f d conve4eAce wf w04 Pend qc%. clesu n �A POnd 1 a� "' V_CPcTMeNT Wf '• wer Potvo 92. PoIval 3 90 V. AG .G p,7 !'S ,-t'A4'Lewl.30`'/ SIVSp: NOTE 8%x 11 PrbposeJ Svk Bosrn rlbpd Map , BASin A4 no+ " .010vin on cirewir%93 ' SP Zy 5w5, r� .RAt� � SG�.t�rlrl bpi � PI`o�lt� - S�vJt ? . Gi 1�+; vca.G-, Cr dd 5wo � Vel CO A " pt jjori - e lroSj. d e, R*cJ C or ih u. poor dc5ry n 1Florence & Hutcheson, Inc. June 18, 11: North Carolina Department of Environment and Natural Resources Division of Water Quality Stormwater Permitting Unit Attn: Mr. Mike Randall 1617 Mail Service Center Raleigh, NC 27699-1617 Re: Braewood Subdivision Flat Rock, North Carolina Dear Mr. Randall: Pursuant to your letter dated October 1, 2007, Florence and Hutcheson, Inc. hereby respectfully submits the following application for a post -construction stonmwater permit for the Braewood Subdivision. This project located in Henderson County, North Carolina within the corporate limits of the Village of Flat Rock. We recently received approval for the sediment and erosion control permit for this project on March 31, 2008 (Project ID: HENDE-2008-011). With this application, I would like to offer a brief summary of the project and several activities that have guided the direction of the stormwatet management plan. The Braewood Subdivision is a residential subdivision of approximately 90 acres into 122 residential lots. The project is proposed to be constructed in three consecutive phases. This project has been approved by the Village of Flat Rock as residential planned unit development in which 50% of the site will be preserved as open green space. Within the project site are several wetlands which comprise 7,57 acres of this green space area. The intent of this application is to secure the post -construction stormwater permit for the entire project. The project was originally developed with four separate detention ponds for water quality and quantity requirements. However, at an on -site meeting between Mr. Clement Riddle of ClearWater Environmental Consultants, Inc., USACOE, US Fish & Wildlife, and the NC Wildlife Resource Commission on February 20, 2008, there was a general concern among the regulatory agencies with two of the proposed detention ponds. The purpose of this particular meeting was to discuss a permit application submitted by ClearWater Environmental for utility crossings in several of the wetland areas and during the review of the project, it was determined that the two detention ponds may potentially affect the wetlands within that area. In effort to alleviate these concerns and preserve these wetlands, an alternate plan providing water quality and utilization of the wetlands was discussed with a favorable response from USACOE. This alternate plan essentially replaces the two detention ponds with level spreader/filter strips to provide stormwater treatment prior to 16 Wetlington Avenue • Greenvitle, SC 29609 • (864) 233-5425 • Fax (864) 233-5435 entering the wetlands. A conceptual design of this alternate plan was recently presented to you by Mr. Riddle, ClearWater Environmental, via email, on May 5, 2008. Following your phone conversation with Mr. Riddle on May 12, 2008 and with your verbal approval of the conceptual plan, we have performed the final engineering and developed the final stonnwater management plan accordingly which is presented with this application. Our intent with this project is to develop a stormwater management plan that achieves a satisfactorily level of water quality while also preserving the natural wetlands located on the site. We appreciate your review of this application and welcome the opportunity to discuss the project in detail with you, as well as explore other opportunities available to meet the water quality requirements. If you have any questions or would like to meet to discuss, I can be reached at (864) 233-5425. ResW ub ' ted, Clinton W. Link, P.E. Project Manager Florence & Hutcheson', Inc. �..CONSULTING ENGINEMtS October 3, 2008 North Carolina Department of Environment and Natural Resources Division of Water Quality Stormwater Pen-nitting Unit Attn: Mr. Mike Randall 1617 Mail Service Center Raleigh, NC 27699-1617 Re: Stormwater Project No. SW 1080802 Braewood Subdivision Dear Mr. Randall: As a follow-up to our recent conversations and the comments received in your August 28`l' letter regarding the post -construction stormwater permit for the Braewood Subdivision, Florence and Hutcheson hereby respectfully submits revised stormwater management plans on behalf of Mr. Hilton Swing for your review. As you recall, this residential development is occurring on 90 acres of land, in which 50% of the site will be preserved as green space. The site also has several jurisdictional wetlands and our intent is to permit this project as a low -density development in order to preserve the site and avoid adverse impacts to the wetlands. Upon review of our application, however, you identified several concerns relative to certain aspects of the proposed improvements which do not meet the requirements of a low -density development. We have since taken another look at the proposed improvements and revised the plans in effort to alleviate these concerns. In response to our previous conversations and your preliminary review comments, 1 offer the following summary of the revisions that have been made to satisfy the conditions of a low -density development permit. 1) Per our conversation, we have eliminated Wet Detention Pond 91 from the project. This pond was initially proposed for Phase I of the project in close proximity to a wetland. Since this phase achieves the requirements of a low -density development, the pond is not required for water duality and therefore has been removed. 2) Comments 1-3 of your August 281h letter were concerned specifically with the Wet Detention Pond design. While these revised plans do not specifically address your comments at this time, we have no objection and can properly satisfy these concerns upon determining the final pen -nit application type. In general, our formal resubmittal of the application will include a detailed landscape plan prepared by a North Carolina licensed professional with specifications and a maintenance plan developed to the Department of 16 Wellington Avenue • Greenville, SC 29609 • (864) 233.5425 • RLx (864) 233-5435 Water Quality standards. Additionally, a rubber liner will be proposed for the ponds in order to maintain the permanent pool for the pond. The outlet structure detail -will be revised to provide an orifice design satisfying the maintenance requirements. 3) Comments 4-5 of your letter dealt with issues relative to meeting the stormwater conveyance requirements of a low density development. These comments were specifically related to two areas of Phase II of the project where we were proposing curb and gutter and storm drain culverts as the means of conveyance. Per our conversation, we were instructed to provide the stormwater conveyance to the maximum extent practicable by means of vegetated swales. After taking another look at the project, we determined that we could utilize vegetated swales in lieu of the culverts in one of these areas. The revised plans reflect where these swales are proposed. With this change, we have eliminated approximately 800 linear feet of storm drain pipe. Additionally, the stormwater runoff from 19 lots (27.5%) within this phase will now be conveyed primarily through a grass swale. While other locations within this phase where analyzed for similar revisions, changes were not implemented due to impacts to the residential lots and the overall character of the development. We hope you will find that we have sufficiently addressed your concerns for meeting the requirements of a low -density development. Obviously, if these revisions do not alleviate your concerns, it will greatly affect the post -construction permit application for this project. We appreciate your willingness to provide another preliminary review of these revisions prior to making whole -scale revisions to our drainage report, calculations, and design. Our intent with this project is to develop a stormwater management plan that achieves a satisfactorily level of water quality while also preserving the site as much as possible. We certainly appreciate your cooperation and flexibility in working with us on this project. If determined we have properly addressed your concerns with these plan revisions, we will provide you with a formal resubmittal of the project promptly upon getting your concurrence. Re U=1 Clinton W. Link, P.E. Project Manager Cc: Hilton Swing Clement Riddle Herbert, Laura C From: Natalie Berry <nberry@hendersoncountync.org> Sent: Tuesday, October 07, 2014 9:27 AM To: Herbert, Laura C Subject: RE: King Creek Bog Location/Landowner Map and Braewood Development Plan as requested for Permit SW-1080802 Attachments: FRO 2014.pdf Matt King phone number is 828-243-0087. The logger is Mike Freeman and his phone number is 828-231- 5560. If you need me to do anyt tng a a to help let me know. NATALIE J. BERRY, P.E. ASSISTANT COUNTY ENGINEER lip106 i;oilh Kine Street, Suite 210 Hcudcrsomille, ltiordi Carolina 28'7921 Rt)Crr\' �{l'; }1�I1dCr3l�llCUUllIVI1C.VIli WNvw-hcndrrsoncount-, nc.ore (7f ICU Phnne: 825-69.4-652.1 l�ssrsr;- is }xv':rte ct sWvrrg ixs'it is ti:e citr�ens ajHcrrlar'so�� Gs^ras"' }ii rf: emphasis o n tafeg% Ser v;cc aid rlv Sn-bvrrrnF u. From: Natalie Berry Sent: Monday, October 06, 2014 5:51 PM To: Herbert, Laura C Subject: Re: King Creek Bog Location/ Landowner Map and Braewood Development Plan as requested for Permit SW- 1080802 Laura, The roads are in partially and gravelly. Hilton Swing went bankrupt and lost everything. Matt King bought the property and asked to log a little less than one acre of trees on the roadway edges. I allowed this ( not sure it was a good idea in hindsight ) for the owner. I did not know about the bog or the Existing stormwater plan and I believe the logger may have gotten carried away. i stopped them from working in the area of the bog last week and was to meet with Mr. King and the Village staff on Wednesday to discuss. The Village secretary called a few minutes ago to cancel due to a family emergency. I have contact info for Matt King in my office and I will send it to you tomorrow. More after I meet with the village. Thanks Natalie Berry On Oct 6, 2014, at 4:42 PM, Herbert, Laura C <laura.herbert u,ncdenr. gov> wrote: Anita, See the attached copy of the first couple of pages of the SW permit (issued November 5.2008) and an overview of -the approved plan (with the wetlands outlined in blue). The new owner needs to transfer the permit and needs to follow the approved SW plan. We have a copy here in ARO, in case he does not have a copy. This was permitted as a post construction SW permit, so I am trying to run down the history on that. (Natalie, you may can provide some historical perspective on this?). Are they just now clearing for the subdivision? Anita, if you have the • current owner's contact information, we can contact him directly to discuss his responsibilities wrt the stormwater permit. Thanks, Laura Laura Herbert, P.E. Regional Engineer Division of Energy, Mineral, and Land Resources - Land Quality Section NCDENR-Asheville Regional Office 2090 US Highway 70 Swannanoa, NC 28778 Tel:828-296-4500 Fax:828-299-7043 http://portal.nedenr.org/web/ir Notice: E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and therefore may be disclosed to third parties unless the content is exempt by statute or other regulation. From: Goetz, Anita [mailto.anita roetz a fws. ov) Sent: Monday, October 06, 2014 4:25 PM To: Herbert, Laura C Cc: Bryan Tompkins Subject: King Creek Bog Location/Landowner Map and Braewood Development Plan'as requested for Permit SW-1080802 Hi Laura, Thanks for looking into permit for this so we might review the stormwater plans for this development. King Creek Bog is owned by three entities. Matt King/Morgan Family Investments recently purchased Braewood failed development at auction (once owned by Swing/then TD Bank foreclosed). The maps attached focus on the Potts property (they own a significant portion of the bog), where we' are funding a bog restoration/management project. We have also funded management for invasive, exotic plants on Rick Merrill's property (also part owner of King Creek bog) in past years. We are very concerned about storm waterlcontaminants entering bog, changing the chemistry of site (bogs are nutrient poor), and impacting negatively rare species. This bog contains occupied habitat significant for two rare plants that are critically endangered and protected under the Endangered Species Act. If you have an approved plan that we can review, it will help us to determine the type of impacts we might expect from this development, and we hope in the future to work with the developer and future landowners to reduce these impacts to King Creek bog. Note that the FWS restoration program I oversee focuses on mountain bog management and conservation, and may offer incentives to landowners (technical assistance and funding) to restore and manage mountain bogs, and as well as treat stormwater through LID practices, on their property. E • Low Density Residential Subdivisions Deed Restrictions & Protective Covenances accordance with Title 15 NCAC 2H.1000, the Stormwater Management Regulations, deed restrictions ,id protective covenants are required for Low Density Residential Subdivisions where lots will be subdivided and sold_ Deed restrictions and protective covenants are necessary to ensure that the development maintains a "built -upon" area consistent with the applicable regulation governing the density level. I, dl r T� SQI,) �, acknowledge and affirm by my signature below,�iat I will cause the followi g deed restrictions and protective covenants to be recorded for AsE 1 Q P-4F-LA0610 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 NCAC 2H.1000. 2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the stormwater management permit. 3. These covenants are to run with the land and be binding on all persons and parties claiming tinder 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. /+ AQ lW greq - B. The maximum allowable built -upon area per lot is 40/ OT sqk afe-feat. 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, and coquina, but does not include .raised, open wood decking, or the, water surface of swimming pools. In the case of a lot within CAMA's regulated AEC, where the Division of Coastal Management calculates a different maximum allowable built -upon area for that lot than is shown herein, the governing maximum built-upodarea for that lot shall be the most restrictive ofthe two. 8. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the development except for average driveway crossings is strictly prohibited by any persons. 9. Each /of will maintain a 30 foot wide vegetated buffer between all impervious areas and surface waters. 10. All roof drains s l t i at least oot from the mean high water mark of surface waters. Signature: / Dater ZC}ni5 a Notary Public in the State of , �=bl� County of kdw�son _,• do hereby certify that n 1J�ffl personally appeared before me this the "�" day of 20-a, and acknowledge the due execution of the foregoing instrument. Witness my hand and official seal, SEAL ature My Commission expires Form DR_11C-5 Rev:] Page 1 of 1 0 E-1 Low Densitv Residential Subdivisions with Curb Outlet Swales Deed Restrictions & Protective Coveyances I— accordance with Title 15 NCAC 21-1.1000, the Stormwater Management Regulations, deed restrictions and tective covenants are required for Low Density Residential Subdivisions with curb outlet swales, where lots will be subdivided and sold_ Deed restrictions and protective covenants are necessary to ensure that the ' development maintains a "built -upon" area consistent with the applicable regulation governing the density level. I, !" 1 [-Tc1.J u)11x]C1 acknowledge and affirm by my signature below, that I will cause the following deed restrictions anb protective covenants to be recorded for5i4rE 1 41EL of aQA563 prior to the sale of any lot: I. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number as issued by the Division of Water Quality under NCAC 2H.1000. 2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the stormwater management permit. 3. These covenants are to run with the land and be binding on all persons and parties claiming under them. 4. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. 5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence of the Division of Water Qualify. _/ hO Orea. 6. The maximum allowable built -upon area per lot is a Of s'qcmr-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, and coquina, but does not include raised, open wood decking, or the water surface of swimming pools. In the case of a lot within CAMA's regulated AEC, where the Division of Coastal Management calculates a different maximum allowable built -upon area for that lot than is shown herein, the governing maximum built -upon area for that lot shall be the most restrictive of the two. B. This project proposes a curb outlet system. Each designated curb outlet swale shown on the approved plan must be maintained at a minimum of 100' long with 5:1 (H.-V) side slopes or flatter, have a longitudinal slope no steeper than 5%, carry the flow from a -W year storm in a non -erosive manner, and maintain a dense vegetated cover. 9. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the development except for average driveway crossings, is strictly prohibited by any persons. 10. Each lot will maintain a 30' wide vegetated buffer between all impervious areas and surface waters. 11. All roof drains shall terminate at least 30' from the mean high water mark of surface waters. 12. Filling in, piping or alteri an designated 5:1 curb outlet swale associated with the development is prohibited by any pers s. Si nature: Date: I, a Notary Public in the do hereby certify that 1 �On personally appeared before me this the day of 3, 20 a , and acknowledge the due execution of the foregoing instrument: Witness my hand and official seal, SEAL Signature My Commission expires - Form DRPC-b Rev.1 Page 1 of 1 9RAEWOOD DEVELOPMENT - PHASE II MAXIMUM BUILT-APON AREA LOT TOTAL AREA MAX BUILT -UPON AREA bF till 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 36 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 6 7 L5 8 9 643 6600 7100 7100 $600 8796 8886 7668 7128 7668 7128 7668 7170 8173 7792 8323 4916 6000 5500 6000 6500 6004 5423 8024 4742 5586 6012 5611 4780 6681 9548 9444 6085 7665 7900 7664 8193 7504 9028 10,169 9438 9323 10768 7791 8484 9301 9353 9814 8136 6643 8437 12917 15302 16239 13827 13412 13434 13391 12533 16423 12351 11494 IST76 111'10 10336 8976 9800 9722 14395 3218 3300 3560 3550 3300 4398 4443 3834 3564 3834 3564 3834 3685 4087 3896 4162 2458 3000 2750 3000 2760 3002 2712 4012 2371 2793 30OG 2806 2390 3341 4774 4722 3043 3833 3950 3782 4097 3752 4514 5086 4719 4662 6379 3896 4242 4651 4677 4907 4068 3272 4219 6459 7661 7620 6914 6706 6717 6696 6267 8212 6176 6747 7888 6555 16S 4488 4900 4861 7198 0 0 BRAEWOOD DEVELOPMENT - PHASE Ili MAXIMUM BUILT-APON AREA L T A AREA SF M B - P A 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 12467 13475 11777 12651 10118 11043 10392 11316 11321 10873 13461 12709 12391 13510 10702 13496 14513 12059 9360 9368 6234 6738 5889 6326 5059 5522 6196 5658 5661 5437 6731 6355 6196 6755 5351 6748 7257 6030 4680 4684 i BRAEWOOD DEVELOPMENT - PHASE I MAXIMUM BUILT-APON AREA 0 DA DA BUA % BUA Al 181,645 33,106 18.2% A2 253,519 15,246 6.0% A3 630,749 58,806 9.3% A4 663,854 66,539 10.0% A5 192,971 27,878 14.4% A6 1,041,084 252,534 24.3% A7 607,662 127,631 21.0% B1 26,136 14,374 55.0% 62 771,012 204,732 26.6% C1 54,450 0 0.0% 4,423,082 800,846 18.1% 0 VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the interactive online map at htt :1/h2o.enr.state.nc.uslsu/msi ma s.htm) 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. Initials • Original and one copy of the Stormwater Management Permit Application Form • Original and orre colnj of the Deed Restrictions & Protective Covenants Form J'i eV1OUSLY Swl3wt� T'rEp • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP • Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR I • Calculations & detailed narrative description of stormwater treatment/management _ T r�tcR eD • Copy of any applicable soil report _ A/A_ • Three copies of plans and specifications (seated, signed & dated), including: ATr0cr_!Ft9,-p - Development/Project name - Engineer and firm -Legend - North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property/project boundary - Location map with named streets or NCSR numbers - Original contours, proposed contours, spot elevations, finished floor elevations - Details of roads, drainage features, collection systems, and stormwater control measures - Wetlands delineated, or a note on plans that none exist. - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated - Vegetated buffers (where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf, please complete this section. Designated agent (individual or firm): Mailing Address: City: State: Phone: { ) Fax: ( ) Email: VIII. APPLICANT'S CERTIFICATION I, (print or type manure of person listed in General I►cforinatim, item 2) certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A NCAC 21-1.1000. Signature: Forrn SWU-101 Version 8.07 Page 4 of 4 Date: BRAEWOOD SUBDIVISION DRAINAGE BASIN INFORMATION BASIN 9 INFORMATIONS -`+ �DR_AIN_AGE AREA�A I i DRAINAGEtAREA`�A2 QRAINAGE3ARE'A A3 ReceivingStream Name King Creek King Creek King Creek Stream Class & Index No. Class B I No. 6-55-8-1-2-(1) Class B I No. 6-55-8-1-2-(1) Class B 1 No. 6-55-8-1-2-(1) Drainage Area (so 181645 253,519 630,749 Existing Impervious Area (so 0 605 21180 Proposed Impervious Area (sf 33106 14,641 37,626 % Impervious Area (total) 18.2 6.0 9.3 IMPERI/10_US SURIxACE AREA v. _:. DRAINAGE AREA7A1 DRAINAGE'AREA7,2,�� 1DRAINAGE ARE'AA3 On -site Buildings s 12349 11866 15829 On -site Streets s 19396 0 12,897 On -site Parking (so 1361 2775 8900 On -site Sidewalks (st 0 0 0 Other on -site (so 0 0 0 off -site (SO 0 605 21180 Total (sf): 33,106 15,246 58,806 BkSIWlNF�ORMA,TION "�' DRAINAGECAREA'A4 , AA id►� E,AREA7A5 ZDRA1N'AGE AREA Receiving Stream Name King Creek King Creek King Creek Stream Class & Index No, Class B 1 No. 6-55-8-1-2-(1) Class B 1 No. 6-55-8-1-2-(1) Class B I No. 6-55-8-1-2-(1) Drainage Area (so 663,854 192,971 1,041,084 Existing Impervious Areas 4,684 0 15980 Proposed Impervious Areas 57,171 27,878 252,648 % Impervious Area (total) 10.0 14.4 24.3 IMP.ERV_IO;US SURFACE A G _A�AT,�AAM A RAAREA On-site Buildings (sf) 28666 19110 100,735 On -site Streets (st 14,393 0 105,746 On -site Parking (sf) 18796 8768 28,247 On -site Sidewalks (so 0 0 10,899 Other on -site sf 0 0 0 Off -site (sf) 4684 0 6,907 Total (sD: 66,539 27,878 252,534 i B�,1SINLINFQRRMi4T!PN, j . AINA`GE`AREklA L ���_ �"' "INA E`,A EAB1R Y �DRA'INAGEaARE%A B2II Receiving Stream Name Kin Creek None None Stream Class & Index No. Class B / No. 6-55-8-1-2-(1) Drainage Area (sfl 607,662 26,136 771,012 Existing Impervious Area (sfl 1,725 2072 2492 Proposed Impervious Area (sfl 125,906 0 204,732 % impervious Area (total) 21.0 0.0 26.5 IMPERMIOUS SURFA - E AREA DRAIN`A►GELAREA IA7 ±DRAINA`GE AREA° B1, ;DRAiNA_ G_E ARE AI B2 J On -site Buildings s 85260 12302 169,304 On -site Streets sfl 24,451 0 7,740 On -site Parkin (sf) 8597 0 11,203 On -site Sidewalks (sf) 9,323 0 3,749 Other on -site (sfl 0 0 0 Off -site (sf) 0 2072 12,736 Total (sfl: 127,631 14,374 204,732 Receiving Stream Name None Stream Class & Index No. Drainage Area (so 54,450 Existing Impervious Areas 0- Proposed Impervious Area (so 0 % Impervious Area (total) 0.0 IMPER_VIgUS+S_ URFACEtAREAk ` DRAI_- Er"#R A ,C1 `, ,F k � k � f "_ � • � a On -site Buildings (sfl 0 On -site Streets (sf) 0 On -site Parkin (so 0 On -site Sidewalks (sfl 0 Other on -site sfl 0 Off -site (Sq 0 Total (sfl: 0 Ll u Permit No. (to be provided by DWQ) HCDENR p STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. 2 - .ev p,5-'tiaa. 'y 4 �• ! is , ti �;..;'r-e --.,yyi- R.r..�. -s .. :LPRO;IECT!INFORMATION ?`�,.,,��E:�i_ Project name Braewood Subdivision Contact person Hilton Swing Phone number 828-696.0826 Date 10f31 f2008 Drainage area number 62 (Pond 3) II: DESIGN;INFORMATIONr:C :imr.<:a ay ka � ',:x .3e<�.=.ems S, '• t` y ,4 i :pit+..7_.i i `¢�ru.xF t�•�r?:a zM1s Site Characteristics Drainage area 771,012.00 h2 Impervious area 204,732,00 h2 % impervious 26.55 % Design rainfall depth 1.00 in Storage Volume: Non -SR Waters Minimum volume required 0,00 ft3 Volume provided 0,00 to Storage Volume: SR Waters 1-yr. 24-hr runoff depth pr0.74, pstl.67 in Pre -development 1-yr, 24-hr runoff 28,688,00 ft3 Post -development 1-yr, 24-hr runoff 106,176.00 ft3 Minimum volume required 77,488.00 ft3 Volume provided 80,000.00 ft3 Peak Flow Calculations 1-yr, 24-hr rainfall depth 4.50 in Rational C, pre -development CN = 55 (unitless) Rational C, post -development CN = 69 (unitless) Rainfall intensity: 1-yr, 24-hrstorm 0.20 inmr Pre -development 1-yr, 20r peak Flow 12.58 ft/sec Past -development 1-yr, 24-hr peak flow 52.70 ft3isec PrelPost 1-yr, 24-hr peak flow control 40.12 ftWfsec Basin Elevations Basin bottom elevation 2,190.00 It Sediment cleanout elevation 2.191.00 It Bottom of shelf elevation 2,198.50 ft Permanent pool elevation 2,199.00 It SHWT elevation Use Liner ft Top of shelf elevation 2,199.50 ft Temporary pool elevation 2,202.00 ft Form SW401-Wet Detention Basin-Rev.4 Parts Pond 3, Page 1 of 2 0 Permit N (to be provided by DWQ) II�0ESIGN'INFORMAT ION Volume and Surface Area Calculations SAIDA ratio 1.70 (unitfess) Surface area at the bottom of shelf 14,052.00 fe Volume at the bottom of shelf 75.943.00 63 Permanent pool, surface area required 13,107.00 f? Permanent pool, surface area provided 15,508.00 ft2 OK Permanent pool volume 83,583.00 ft3 Average depth for SAIDA tables 5,06 ft OK Surface area at the top of shelf 18,960.00 62 Volume at the top of shelf 92,450.00 ft' Forebay volume 19,820.00 ft3 Forebay % of permanent pool volume 1 23.71 % Must be approx. 20%. Adjust pond dimensions Temporary pool, surface area provided 23,658.00 ft2 Drawdown Calculations Treatment volume drawdown time 2.00 days OK Treatment volume discharge rate 0.25 ft31s Pre -development 1-yr, 24-hr discharge 13.00 ft3ls OK Post -development 1-yr, 24-hrdischarge 1.40 ft3ls OK Additional Information - Diameter of orifice 1.5 in Design TSS removal 90 Basin side slopes 3.00 :1 OK Vegetated shelf slope 10,00 ;1 OK Vegetated shelf width 10.00 It OK Length of flowpath to width ratio 3,00 :1 OK Length to width ratio 2.00 :1 OK Trash rack for overflow & orifice? y (Y or N) OK Freeboard provided 2.69 ft OK Vegetated filter provided? n (Y or N) Design must be based on 90% TSS removal Recorded drainage easement provided? y (Y or N) OK Capures all runoff at ultimate build -out? y (Y or N) OK Drain mechanism for maintenance or emergencies Pump Form SW401-Wet Detention Basin-Rev.4 . Parts Pond 3, Page 2 of 2 E E Permit Number: (to he provided by DJYQ) Drainage Area Number: Wet Detention Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in'a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one): ❑ does ® does not incorporate a vegetated filter at the outlet. This system (check one): 0 does ® does not incorporate pretreatment other than a forebay. Important maintenance procedures: — Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). — No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. — Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the maximum extent practical. — Once a year, a dam safety expert should inspect the embankment. After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance should be kept in a known set location and must be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblem: How I will remediate theproblem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the wet Areas of bare soil and/or Regrade the soil if necessary to detention basin erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Vegetation is too short or too Maintain vegetation at a height of long. approximatel six inches. Form S W401-Wet Detention Basin O&M-Rev.3 Page I of 4 0 0 Permit Number: (to he provided by DWQ) Drainage Area Number: BMP element: Potentialproblem: How I will remediate theproblem: The inlet device. pipe or The pipe is clogged. Unclog the pipe. Dispose of the swale sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to swale. smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. The forebay Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design depth for possible. Remove the sediment and sediment storage. dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion Rrobtems. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying, The vegetated shelf Best professional practices Prune according to best professional show that pruning is needed practices to maintain optimal plant health. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying, The main treatment area Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design sediment possible. Remove the sediment and storage depth. dispose of it in a location where it will not cause impacts to streams or the BMP. . Algal growth covers over Consult a professional to remove 50% of the area. and control the algal growth. Cattails, phragmites or other Remove the plants by wiping them invasive plants cover 50% of with pesticide (do not spray). the basin surface. Form SW401-Wet Detention Basin O&M-Rev3 Page 2 of 4 9 Permit Number: (to be provided by 1)WQ) Drainage Area Number: BMP element: Potentialproblem: How I will remediate the roblem: The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. Evidence of muskrat or Use traps to remove muskrats and beaver activity is present. consult a professional to remove beavers. A tree has started to grow on Consult a dam safety specialist to the embankment, remove the tree. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is da3na ed Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Division of damage have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 919-733- 1786. The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 6.0 feet in the mail pond, the sediment shall be removed. When the permanent pool depth reads 0.0 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill-in the blanks) 0 Permanent Pool Elevation 2199.0 Sediment Removal E . 2201 Pe manen Pool -------------- - Volume Sediment Removal Elevation 2i Volume Bottom hlcvatio 2200 -ll Min. ------------------------------------------ ------ Sediment Bottom Elevation 2192 1-ft n. Storage Sediment Storage FOREBAY MAIN POND Form SW401-Wet Detention Basin 0&M-Rcv.3 Page 3 of 4 0 0 Permit Number: '(to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:Braewood, LLC BMP drainage area number:B2 Print name:l-lilton Swing Title:Registered Agent & Owner Addr Phon SignE Date: Note: The legally responsible party should not be a homeowners association unless more than 500/a of the lots have been sold and a resident of the subdivision has been named the president. I, a Notary Public for the State of County of_ do hereby certify that � n ':N6 2U04 personally appeared before me this day of , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, SEAL My commission expires (0-7-5.2011 Form SW401-Wet Detention Basin O&M-ltev.3 Page 4 of 4 it A' I FNA NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be completely filled out, prinfed and submitted. DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)! fr,f f Gaye- tt i ru ."1 .31 P ' } -� a' : 41:.6 -,, y.. ,�v sT�y"i v"'^'.. t. �J,k7 �. xtr, �.. ,a i. i- •.�_ wPROJECT.�INF:ORMATION ..:�. _ . � :,�__ s . _ �. ;_� oi•...� �_-�`..�_�.! ...-r ...� , _.,:'s:_.a.. � '��-r .rt._ �:. 5`,.x..? -ss - ,� Project name Braewood Subdivision Contact name Hilton Swing Phone number 828-696-0826 Date October 31, 2008 Drainage area number A6 (Level Spreader 1) M1 v F ° !.--`• 1A'=- ?M1 ' Yi4l. "` ap«+<p sZ :'.�._ .�y a•.5} .ry,,:. .. > 'sr."rfi.: w 4, II EDESIGN'INFORMATION:- �w -���w• rk �r�.1.,�r, �:�c —+�.�.s• For Level Spreaders Receiving Flow From a BMP Type of BMP NIA Drawdown flow from the BMP cis For Level Spreaders Receiving Flow from the Drainage Area Drainage area 1,041,084.00 fl2 Impervious surface area 252,648.00 ftz Percent impervious % Rational C coefficient CN = 69 Peak flow from the 1 inihr storm cfs Time of concentration min Rainfall intensity, 10-yr storm 0.30 inlhr Peak flow from the 10-yr storm cis Where Does the Level Spreader Discharge ? To a grassed bioretention cell? N (Y or N) To a mulched bioretention cell? N (Y or N) To a wetland? Y (Y or N) Please complete filter strip characterization below. To a filter strip or riparian buffer? Y (Y or N) Complete filter strip characterization below. Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass 20.00 It Width of dense ground cover 0.00 ft Width of wooded vegetation 0.00 ft Total width 20.00 ft Elevation at downslope base of level lip 2,185.00 fmsl Elevation at top of bank of the receiving water 2,184.00 tmsl Slope (from level lip to to top of bank) 5.00 % OK Are any draws present? N (Y or N) OK Level Spreader Design Forebay surface area 702.00 sq ft OK Feet of level lip needed per cfs 13 ft/cfs Answer 'Y' to one of the following: Length based on the 1 inlhr storm? N (Y or N) Length based on the 10-yr storm? Y (Y or N) Length based on the BMP discharge rate? N (Y or N) Design flow 163.00 cis There is too much flow to be handled by a level spreader. Is a bypass device provided? N (Y or N) A bypass device is not needed. Form SW441-Level Spreader, Filter Strip, Restored Riparian buffer-Rev.4 Parts I. and ll. Design Summary, page 1 of 2 0 Length of the level lip Are level spreaders in series? Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): M B W y Peak velocity in the channel during the 40-yr storm Channel lining material 130.00 ft Level spreader length OK. N (Y or N) (Y or N) Do not complete this section of the worksheet. (Y or N) Do not complete this section of the worksheet. Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. It Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. as Do not complete this section of the worksheet. Do not complete this section of the worksheet, W -- -- — 1 r--------- Y ----------• M M 1 B Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.4 Parts I. and II. Design Summary, page 2 of 2 El • Permit Number: (to be provided by DWQ) Drainage Area Number: Filter Strip, Restored Riparian Buffer and Level Spreader Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Important maintenance procedures: — Immediately after the filter strip is established, any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). — Once a year, the filter strip will be reseeded to maintain a dense growth of vegetation — Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. — Two to three times a year, grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum" pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC,1993). Forested filter strips do not require this type of maintenance. — Once a year, the soil will be aerated if necessary. — Once a year, soil pH will be tested and lime will be added if necessary. After the filter strip is established, it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblem; How I will remediate theproblem: The entire filter strip Trash/debris is present. Remove the trash/debris. system The flow splitter device The flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. of any sediment off -site. The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for repair. ( 1 r,--- onrrInns r ....-i c__.....Jr.-:_ nn..vr--nn.Xi n,,,. n...... i —rQ • BMP element: Potentialproblem: How 1 will remediate theproblem: The swale and the level The swale is clogged with Remove the sediment and dispose lip sediment. of it off -site. . The level lip is cracked, Repair or replace lip. settled, undercut, eroded or otherwise damaged. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip, and shows stormwater has then plant a ground cover and bypassed it. water until it is established. Provide time and a one-time fertilizer application. 'frees or shrubs have begun Remove them. to grow on the swale or just downslo e of the level lip. The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed (enlarge if downhill. necessary). After this, reestablish the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of if applicable). approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used, do not allow it to get into the receiving water. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality local Regional Office, or the outlet. 401 Oversi ht Unit at 919-733-1786. Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 2 of 3 0 Permit Number: (to be provided by 1)WQ) Drainage Area Number: Filter Strip, Restored Riparian Buffer and Level Spreader Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Important maintenance procedures: — Immediately after the filter strip is established, any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). Once a year, the filter strip will be reseeded to maintain a dense growth of vegetation - Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. Two to three times a year, grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC,1.993). Forested filter strips do not require this type of maintenance. Once a year, the soil will be aerated if necessary. — Once a year, soil pH will be tested and lime will be added if necessary. After the filter strip is established, it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblem: How I will remediate theproblem: The entire filter strip Trash/debris is present. Remove the trash/debris: system The flow splitter device The flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. of any sediment off -site. The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for repair. Form SWU401-Level Spreader, Fitter Strip, Restored Riparian Buffer O&M-Rev.3 Page I of 3 • E BMP element: Potentialproblem: How I will remediate theproblem: The swale and the level The swale is dogged with Remove the sediment and dispose lip sediment. of it off -site - The level lip is cracked, Repair or replace lip. settled, undercut, eroded or otherwise damaged. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip, and shows stormwater has then plant a ground cover and bypassed it. water until it is established. Provide lime and a one-time fertilizer application. Trees or shrubs have begun Remove them, to grow on the swale or just downslo e of the level lip, The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed (enlarge if downhill. necessary). After this, reestablish the erosion control material. The filter strip Crass is too short or too long Maintain grass at a height of if applicable . approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. Plants are dead, diseased or Determine the source of the dyin& problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used, do not allow it to get into the receiving water. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality local Regional Office, or the outlet. 401 Oversight Unit at 919-733-1786. Form SWU401-1,evel Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 2 of 3 Permit Number: (to he provided by DWQ) acknowledge and agree by my signature below that 1 am responsible for the performance of the maintenance procedures I isted above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project nanle:Braewood, LLC I MP clrainage area number:A7 Print name:Hilton Swing . Title: Registered Agent & Owner Address:P.O. Box 346 East Flat Rock, NC 28726 Phone S igna Date: Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. "NIOn 1A. DIA�f I, `N , a Notary Public for the State of tI 1 soLnCil , County of Q,C1.Q1'-)Q}) , do hereby certify that 'S personally appeared before me this day of �1�Y� and acknowledge the due execution of the forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements. Witness my hand and official seal, SEAL My commission expires -5' a Form SWU401-L,evei Spreader, filter Strip, Restored Riparian Butler O&M-Rev.3 Page 3 of 3 ® 0 Length of the level lip Are level spreaders in series? Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): M e W Y Peak velocity in the channel during the 10-yr storm Channel lining material 130,00 ft Level spreader length OK. N (Y or N) (Y of N) Do not complete this section of the worksheet. (Y or N) Do not complete this section of the worksheet. Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. ft Do not complete this section of the worksheel. ft Do not complete this section of the worksheet. ft Do rot complete this section of the worksheet. cfs Do not complete this section of the worksheet. Do not complete this section of the worksheet. - ` Y - l -- ---- ---- M t"t Form SW401-Level Spreader, Filter Strip, Reslored Riparian Buffer-Rev.4 Parts I. and ll. Design Summary, page 2 of 2