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HomeMy WebLinkAboutSW3190704_8 Exhibit # 7 Signed NC Storm Water Application_1/28/2020DEMLR USE ONLY Date Received Fee Paid Permit Number 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 Energy, Mineral and Land Resources STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I. GENERAL INFORMATION 1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Skvland Drive Townhomes 2. Location of Project (street address): 991 S. Skyland Drive City:Mt, Pleasant County:Cabarrus Zip:28124 3. Directions to project (from nearest major intersection): NC Highway 49 North to West Franklin Street (Route 73) east take first right on S. Skyland Drive Site is located approximately 420 feet on the left. 4. Latitude:32* 24' 15.48" N Longitude:801 26' 42.53" W of the main entrance to the project. II. PERMIT INFORMATION: 1. a. Specify whether project is (check one): ®New ❑Modification ❑ Renewal w/ Modificationt tRenezvals with modifications also requires SVVU--102 - Renerual Application Form b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit number , its issue date (if known) , and the status of construction: ❑Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification 2. Specify the type of project (check one): ❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other 3. If this application is being submitted as the result of a previously returned application or a letter from DEMLR requesting a state stormwater management permit application, list the stormwater project number, if assigned, and the previous name of the project, if different than currently proposed, 4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ❑CAMA Major ❑Sedimentation/Erosion Control: _ ❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts ac of Disturbed Area 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: 5. Is the project located within 5 miles of a public airport? ®No ❑Yes If yes, see S.L. 2012-200, Part VI: http://portal.ncdenr.org/web/lr/rules-and-regulations Form SWU-101 Version Oct. 31, 2013 Page l of 6 III. CONTACT INFORMATION 1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee, designated government official, individual, etc. who owns the project): Applicant/Organization:S&C Carolina Group LLC Signing Official & TitIe:Earl Coulston - Owner/Developer b. Contact information for person listed in item 1a above: Street Address:8332 Regent Parkway City:Fort Mill State:SC Zip:29715 Mailing Address (if applicable): City: State: Zip:, Phone: (803 ) 547-3500 Fax: ( ) Email:earl@coulstondev.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 & b. Contact information for person listed in item 2a above: Street Address: City: Mailing Address (if applicable): City: Phone: ( ) Email: State: Zip: State: Zip: Fax: ( 1 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;American Engineering Associates - Southeast PA Signing Official & Title:Barry Fay, PE Principal b. Contact information for person listed in item 3a above: Mailing Address:8008 Corporate Center Drive; Suite 110 City:Charlotte State:NC Zip:28226 Phone: (704 ) 375-2438 Fax: Email:bfay@american-ea.com 4. Local jurisdiction for building permits: Town of Mt. Pleasant Plaiwing and Economic Development Point of Contact:Erin Burris AICP Phone #: (704 ) 436-9803 Form SVM-101 Version Oct. 31, 2013 Page 2 of 6 IV. PROJECT INFORMATION 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. Stormwater will be collected through a series of catch basins and conveyed through a piped system to a sedimentation chamber. The stormwater will then leach through a stone and rip rap berm to a BMP furnished with a surface sand filter. 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 Yadkin - Pee Dee River basin. 4. Total Property Area: 4.335 acres 5. Total Coastal Wetlands Area: 0 acres 6. Total Surface Water Area: 0.171 acres 7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project Area+:4.164 acres + Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area between the banks of streams and rivers, the area below the Normal High Water (NHM line or Mean High Water (MHW) line, and coastal wetlands landward from the NHW (or MHK9 line. The resultant project area is used to calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHKq line may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 32.64 9. How many drainage areas does the project have? 1 (For high densihj, count 1 for each proposed engineered stormwater BMP. For low densihj and other projects, use 1 for the whole properhj 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 1 Drainage Area _ Drainage Area _ Drainage Area Receiving Stream Name Adams Creek _ Stream Class * C Stream Index Number * 13-17-11-7 Total Drainage Area (so 97,827 On -site Drainage Area (so 93,267 Off -site Drainage Area (so 4,560 Proposed Impervious Area** (so 57,675 Impervious Area** total 60 Impervious' Surface Area Drainage Area _ Drainage Area _ Drainage Area _ Drainage Area On -site Buildings/Lots (so 21,120 On -site Streets (sf) 20,425 On -site Parking (sf) 4,329 On -site Sidewalks (so 4,495 Other on -site (so - Future (so 4,988 Off -site (so 2,318 Existing BUA*** (so - Total (sf): 57,675 Stream Class and Index Number can be determined at: http://portal.ncdenr.orgAveb/wq/ps/csu/classifications 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 Oct. 31, 2013 Page 3 of 6 ***Report only that mnotmt 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 nety BUA. 11. How was the off -site impervious area listed above determined? Provide documentation. N/A Protects in Union County: Contact DEMLR Central Office staff to check if the project is located ivithhz a Threatened & Endangered Species ivatershed that may be subject to uzore stringent stormmwater requirements as per 15A 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 fromht!p://portal.ncdenr.org/web/ /ws/su/bmv-manual. VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Energy, Mineral and Land Resources (DEMLR). A complete package includes all of the items listed below. A detailed application instruction sheet and BMP checklists are available from htW://Vortal.ncdenr.org/web/wg/ws/­su/statesw/­forms-docs. The complete application package should be submitted to the appropriate DEMLR Office. (The appropriate office may be found by locating project on the interactive online map at http://12ortal.ncdenr.org/web/3yq/ws/su/mks.) 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 hgp://Vortal.ncdenr.org/web/wq/ws/su/statesw/forms does. Is 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, sigYied 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 hW2://www.envhelp.org/12ages/onestol2express.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 inn addition to the brief summary provided in the Project Information, item 1. 6. A USGS snap 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 1/2 mile radius on the map. 7. Sealed, signed and dated calculations (one copy). 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 sheets and NCSR numbers. d. Legend. e. North arrow. f. Scale. g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevation of impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal waters, and any coastal wetlands landward of the MHW or NHW lines. • Delineate the vegetated buffer landward from the normal pool elevation of impounded shuctures, 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. m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. Form SWU-101 Version Oct. 31; 2013 Page 4 of 6 n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the maul set of plans, not as a separate document). p. Vegetated buffers (where required). @<::_ 9. Copy of any applicable soils report with the associated SHWT elevations (Please identify elevations in addition to depths) as well as a snap of the boring locations with the existing elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs, the report should also include the soil type, expected infiltration rate, and the method of determining the infiltration rate. (Infiltration Devices submitted to WiRO: Schedule a site visit for DEMLR to verifij the SHWT prior to submittal, (910) 796-7378.) 10. A copy of the most current property deed. Deed book:12430 Page No: 47 11. 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 1a, 2a, and/or 3a per 15A 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. httR://www.secretarv.state.nc.us/Corporations/CSearch.asl2x VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and protective covenants forms can be downloaded from httpl/portal.ncdenr.org/web/lr/state-stormwater- forms does. Download the latest versions for each submittal. Inn 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 DEMLR, 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:Bariy M. Fay, P.E. Consulting Firm: American Engineering Associates - Southeast, PA Mailing Address:8008 Corporate Center Drive, Suite 110 City:Charlotte Phone: (704 ) 375-2438 Email:bfav©american-ea.com State:NC Zip:28226 Fax: (866 ) 404-6615 IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, itent 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 hype name of person listed in Contact hifornnation, item 1a) with (print or hjpe name of organization listed in Contact Information, item 1 a) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. Form SWU-101 Version Oct. 31, 2013 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 DEMLR Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DEMLR 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 vio Lion of NC General Statue 143-215.1 and may result in appropriate enforcement action including the assessr�9sof ' it pen of to $25,000 per day, pursuant to NCGS 143-215.6. _e Signature: before me a stormwater permit. Date: S02) a Notary Public for the State of County of do her by certify that _Cz610Gz A 9 personally appeared r of a ack wledge t 6ue'-bi cction of the application for Witn ss my hand and official sea u0,. SEAL NOTARY PUBLIC My commission expires X. APPLICANT'S CERTIFICATION I, (print or type name of person listed in Contact Information, item 1n) S alr L (ramct A4L" 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 the applicable stormwater- les uy er 15A N5�C 2H .1t20 an�,any other applicable state stormwater requirements. Sig e' Date:_% 2m-1 a Notary Public for the State of / VDZ (ad,v1County of do lie by certify that. C/�S 7`�. personally appeared before me this day of and n wledge the d e exe¢ 'orn of the application for a stormwater permit. Witne s my Ina d and official seal, �j��--- NOTARY ~� U= PUBLIC ORG�Go. SEAL My commission expires Form SWU-101 Version Oct. 31, 2013 Page 6 of 6 4.8.7 Design Procedure Form Design Procedure Form: Sand Filter BIORETENTION FEASIBILITY 1 Is the use of a sand filter appropriate? 2 Confirm other design criteria and applicability. Pollutant Removal Effectiveness Required PRELIMINARY HYDROLOGIC CALCULATIONS 3 Compute site hydrologic input parameters Development Conditions Area CN (SCS curve number) Adjusted CN (curve number adjusted for 1-inch storm) Time of concentration NOTES: Optimal Pre -developed 4.405 acres 70 7.4 min 0.12 hours Post -developed 2.246 acres 88 95.44 5 min 0.08 hours 4 Compute,WQ water quality volume requirements Compute Runoff Coefficient, R Rv = 0.59 Compute WQ Volume requirements WQ = 0.11 acre-ft 5 Compute WQp peak flow using SCS WQP = cfs Compute modified SCS curve number CN = 95.4 6 Compute CPv Compute S (maximum retention) S = 1.36 Compute 1-yr, 24-hr total rainfall depth Rainfall Depth = 2.58 inches Compute Qd (runoff volume) Qd = 1.45 inches Compute CPv (chnnnel protection volume) CPV = 0.27 acre-ft 7 Size Flow Diversion Structure 8 Compute release rates Compute WQ" release rate Release Rate = 0.026 cfs Compute CP release rate Release Rate = 0.055 cfs SAND FILTER DESIGN 9 Compute sediment chamber volume Volpfe = 0.022 acre-ft Volpfe = (0.20)(WQv) 10 Average height of water above filter bed hf = 1_0 ft Determine Area of Sand ponding/filter area Af= 463.4 ft2 11 Set design eleveations and dimensions of facility Length = 42 ft Width = 12.0000 ft Top Elevation = 666 ft 12 Develop stage -discharge and stage stora e Elevation Total Area (ft) Volume Acc. Vol WQv= 4,819 cf ft'(ft') WQv (0.75 adj.)= 3,614 cf 666 1,689 0 666.5 2,049 933 (See Attached) 667 2,444 -- 2,055 667.5 2,834 - 3,373 667.7 9 GCIA z ora Q (cfs) STORM WATER servk.,� STORM WATER 13 Route flows through bioretention area. Resize the footprint area, if desired. Step is most effective for facilities with flow diverters. Ensure detention time requirements and maximum ponding depth requirements are met. 14 Design conveyance to facility 15 Size underdrain system Length = 90 ft 16 Design emergency overflow Length of Weir (if used) _ 17 Prepare vegetation and landscaping plan