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Home My WebLink AboutSW3220306_Supplement-EZ Form_20221020 SUPPLEMENT-EZ COVER PAGE FORMSLOADED PROJECT INFORMATION „ 1 ;Project Name Preserve at Forest Creak Phase 1 2 Proied Area ac 101.65 3 Coastal Welland Area ac 0 4 Surface Water Area ac 3.85 5 Is this Pro1W Hiah or Low DensW H 6 Does this project use an off-site SCM? No COMPLIANCE WITH 02H.1003(4) 7 W'dth of+regetated_setbacks ravigo feet) 30 a Will the MB stated setback remain v tated? Yes 9 If BUA is proposed in the setback does it meet NCAC 02H-1003 4 c-d 7 No 10 Is streambank stabilization proposed on this project? No NUMBER AND TYPE OF SCMs: 11 Infiltration System 0 12 Bioretention Cell 0 13 Wet Pond __ 6 14 Stormwater Wetland 0 15 Permeable Pavement 0 16 ISand Filter 0 17 1 Rainwater Harvesting RWH 0 18 !Green Roof 0 _ 19 Level reader-Filter Strip LS-F5 0 20 Disconnected Im rvious Surface DIS) 0 21 'Treatment Swale 0 22 Drif Pond 0 _ 23 StormFifter 0 24 Silva Cell 0 25 Bayftr 0 26 1 Filterra 0 FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title: Frank McMahan,PE 28Organization: __ �LandDesign 29 Street address: 223 North Graham Street 30 City,State,zip-- _ _ — Charlotte NC 28202 31 Phone numbe!�a}: 704 333-0325 32 Email: fmcmahan@landdesign.com I caAtfy,under penalty of law that this Supplement-EZ form and all supporting Information were prepared under my direction or supervision;that the Infonnadon provided in the form is,to the best of my knowledge and belief,true,accurate,and complete;and that the engineering plans, specifications,operation and maintenance agreements and other supporting information are consistent with the information provided here. 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Yes Yes Yes Yes Yes Yes 5 What are the side slopes of the SCM H:V 7 3:1 3:1 3:1 3:1 3:1 3:1 6 Does the SCM have retaining walls,gabion walls or other Yes No No No Yes No engineered side slopes? 7 Are the Inlets,outlets,and receiving stream protected from erosion Yes Yes Yes Yes Yes Yes 1 Ili storm)? 6 Is there an overflow or bypass for inflow volume in excess of the Yes Yes Yes Yes Yes Yes desi n vDlume7 9 What is the method for dawaterinS the SCM for maintenance? Pu referred Pura referred Pum referred Pum referred Pump referred Pump referred 10 lfapplicable, ll the SCM be cleaned out after construction? Yes Yes Yes Yes Yes Yes 11 Does the maintenance access comply with General MDC B 7 Yes Yes Yes Yes Yes Yes 12 Does the drainage easement comply with General MDC 9 7 Yes Yes Yes Yes Yes Yes 13 If the SCM is on a single family lot,does(will?)the plat comply with N/A N/A N/A N/A NIA NIA General MDC 10? 14 Is there an O&M Agreement that complies with General MDC(11)? Yes Yes Yes Yes Yes Yes 15 Is there an 0&M Plan that complies with General MDC 12? Yes Yes Yes Yes Yes Yes 16 Does the SCM follow the devices ethic MDC? Yes Yes Yes Yes Yes Yes 17 Was the SCM designed by an NC licensedprofessional? Yes Yes Yes Yes Yes Yes 18 Slzinij method used SA/OA SAIDA SAIDA SAIOA SAIDA SA7DA 19 Has a slags/storage table been provided In the calculations? Yes Yes Yes Yes Yes Yes 20 Elevation of the excavated main pool depth(bottom of sediment removal)186 565.50 576.50 581.50 580.50 598.50 6.50 21 Elevation of the main pool botiorn(tap of sediment removal)(fmsl) 656.00 677.00 51 581.00 599.00 807.00 22 Elevation of the bottom of the ve stated shelf fmsl 571.50 581.50 585.50 504.50 603.50 511.50 23 Elevation of the permanent pool lmsl 572,00 611 586.00 585,00 604.00 612.00 24 Elevation of the lop of the vegetated shelf fmsl 572.50 582.50 586.50 585.50 604.50 _ 512.50 25 Elevation of the tempospool Erns[ 573.50 583.25 568.05 586.55 605.50 613,75 26 Surface area of the main armanan3 00l(siguare feat 11929 sf 6206 sf 27510 sf 15809 of 14315 sf 9921 sf 27 Volume of the main Permanent pool cubic feet 45122 cf 20418 of 94558 cf 48343 of 55343 cf 35783 cf 28 Average depth of the main pool feet 3.81 it 3.26 ft 3.44 ft 3.1 ft _ 3.87 ft 3.61 ft a 29 Avera depth equation used Equation 2 Equation 2 Equation 2 Equation 2 Equatlon2 E ui n 2 30 If using a uation 3 main pool perinrieter feet NIA NIA NIA NIA WA NIA 31 If using equation 3 width of submerged veg.shelf feet NIA NIA NIA WA NIA N/A 32 Volume of the foreba cubic feel:)_ 7869 of 3999 cf 15553 cf 9136 cf 10966 of 6121 cf 33 Is this 15-20%of the volume in the mainpool? Yes Yes _Yes_ Yes Yes Yes 34 Clean-out depth for foreba Inches 72In 60in 48in 48in 60in 60in 35 Design volume of Si cu ft 25818 cf 11392 cf 74361 cf _ 33982 cf 24917 cf 21073 of 36 Is the outlet an orifice or a weir? Orifice Orifice Orifice Orifice Orifice Orifice 37 If orifice orifice diameter inches 2.5 In 1.5 in 3.5 in 3.0 in 2.5 in 2.0 In 38 If weir,weir hat hi inches WA NIA NIA NIA NIA NIA 39 If weir,weir length inches NIA NIA NIA NIA N/A NIA 40❑rewdown time for the temporary pool(days) 2.75 2.43 2.93 2.28 2.72 2,97 41 Are the Inlet(s)and outlet located in a manner that avoids short- Yes Yes Yes Yes Yes Yes circultin ? 42 Are berms or baffes provided to improve the flowpath? No No No No No No 43 Depth.of foreba at entrance inches 82 in 70 in 58 in 58 in 70 in 70 in 44 De th offorebay at exit inches 78 in 66 in 54 in 54 in 66 In 66 In 45 Does water fiaw out of the forabay In a non-arosive manner? Yes Yes Yes Yes Yes Yes 46 Width of the vegetated shelf feet 6 ft E ft E ft E ft E ft E ft 47 Slope of ve etated shelf H: 6:1 5:1 5:1 6:1 6:1 6:1 48 Does the orifice drawdown from below the top surface of the Yes Yes Yes Yes Yes Yes errnanentpool? 49 Does the pond minimize impacts to the receiving channel from the Yes Yea Yes Yes Yes Yes 1-r 24-hr storm? 50'fountains proposed?(i€Y,please provide documentation that No No No No No No i Is met. 51 Is a trash rack or other device provided to protect the outlet Yes Yes Yes Yes Yes Yes system? 52 Are the dam and embankment planted in non-clumping turf grass? Yes yes Yes Yes Yes Yes 53 Species of turf that will be used on the dam and embankment HYBRID HYBRID HYBRID HYBRID HYBRID HYBRID BERMUDA BERMUDA BERMUDA BERMUDA BERMUDA BERMUDA 54 Hasa lantin Dian been provided for the vegetated shelf? yes Yes Yes Yes Yes Yes ADDITIONAL INFORMATION Please use this space to provide any additional information about 55 the wet pori