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Home My WebLink AboutSW1231201_Supplement-EZ Form_20231212 SUPPLEMENT-EZ COVER PAGE FORMS LOADED PROJECT INFORMATION 1 Project Name Bobby N Setzer State Fish Hatchery Renovation 2 Project Area(ac) 41.17 3 Coastal Wetland Area(ac) 0 4 Surface Water Area(ac) 3.91 5 Is this project High or Low Density? High 6 Does this project use an off-site SCM? No COMPLIANCE WITH 02H.1003(4) 7 Width of vegetated setbacks provided(feet) 30 8 Will the ve etated setback remain vegetated? Yes 9 If BUA is proposed in the setback,does it meet NCAC 02H.1003(4)(c-d)? N/A 10 Is streambank stabilization proposed on this project? No NUMBER AND TYPE OF SCMs: 11 Infiltration System 12 Bioretention Cell 13 Wet Pond 14 Stormwater Wetland 1 15 Permeable Pavement 16 Sand Filter 17 Rainwater Harvesting(RWH) 18 Green Roof _ 19 Level Spreader-Filter Strip(LS-FS) 20 Disconnected Impervious Surface(DIS) 21 Treatment Swale 22 Dry Pond 23 StormFilter 24 Silva Cell 25 Bayfilter 26 Filterra FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title: Ben Cathey 28 Organization: McGill Associates 29 Street address: 55 Broad St. 30 City,State,Zip: Asheville,NC 28801 31 Phone number(s): 828-252-0575 32 Email: Ben.Cathey@mcgillassociates.com Certification Statement: I certify,under penalty of law that this Supplement-EZ form and all supporting information were prepared under my direction or supervision;that the information 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. Designer . Signature of Designer SEAL _ 034476 FNGINEq^n k Seal Date DRAINAGE AREAS -u Is this a high densityprojeot7 Yes 2 If so,number of drainage areas/SCMs ,_•___ 1 3 Does thisproject have low density areas? No 4 If so,number of low density drainage areas 0 Is all/part of this project subject to previous rule 5 versions? No FORMS LOADED DRAINAGE AREA INFORMATION .. Entire Site 1 . .: 4 Type of SCM SW Wetland 5 Total drainage area(sq ft) 1,793,365 6 Onsite drainage area(sq ft) 1,793,366 7 Offsite drainage area(sq ft) 0 '• 8 Total BUA in project(sq ft) 379408 sf New BUA on subdivided lots(subject to 9 permitting)(sq ft) N/A New BUA not on subdivided lots(subject to 10 permitting)(sf) __ 80145 sf 11 Offsite BUA(sq ft) ._._._-_____sI_________ 12 Breakdown of new BUA not on subdivided lots: _ -Parking(sq ft) 3285 sf -Sidewalk(sq ft) 2888 st Roof(sq ft) 73258 sf_____ -Roadway(sq ft) sf -Future,(sq ft) -Other,please specify in the comment box below(sq ft) 714 sf New infiltrating permeable pavement on 13 subdivided lots(sq ft) N/A New infiltrating permeable pavement not on 14 subdivided lots(sq ft) N/A Existing BUA that will remain(not subject to 15 permitting)(sq ft) 52374 sf , 16 Existing BUA that is already permitted(sq ft) NIA 17 Existing BUA that will be removed(sq ft) N/A 18 Percent BUA 21% 19 Design storm(inches) 1.0 in 20 Design volume of SCM(cu ft) 8868 cf 21 Calculation method for design volume Discrete NRCS ADDITIONAL INFORMATION`. Please use this space to provide any additional information about the 22 drainage area(s): Other impervious-fish hatchery/treatment improvements • STORMWATER WETLAND ._._._. 1 Dra'n area number��.��..-...-__...- 2 Miclmum required treatment volume(cu ft) Y4 8868 cf GE NERAL MDC Flit l_�1 Q 3 Is the SCM sized to treat the SW from all surfaces al build-out? Yes 4 Is the SCM located away from contaminated soils? Yes 5 What are the side slopes of the SCM(H:V)? 3:1 Does the SCM have retaining walls,gabion wads or other 6 engineered side slopes? No Are the Inlets,outlets,and receiving stream protected from erosion Yes ,.,,• (10-year storm)? Is there an overflow or bypass for inflow volume in excess of the • 6 design volume? Yes 9 What Is the method for dewateri g the SCM for maintenance? Pump(preferred) • 10 If applcable,will the SCM be cleaned out after construction? Yes 11 Does the maintenance access comply with General MDC(8)7 Yes 12 Does the drainage easement comply with General MDC(9)? Yes • 13 If the SCM Is on a single family lot,does(will?)the plat comply with NIA General MDC,(10)7 14 Is there an 0&M Agreement that compiles with General MDC(11)? Yes 16 Is(here an 0&M Plan that compiles with General MDC(12)? Yes 16 Does the SCM follow the devlce specific MDC? Yes 17 Was the SCM designed by an NC licensed professional? 'Yes STORMWATER WETLAND MDC FROM 02H.LO ;e'. . 18 Design volume of SCM(cu ft) 10,365 • 19 Are the Inlet(s)and outlet located In a manner that avoids short-• Yes circuiting? 20 Are berms or baffles provided to improve the flow path? Yes 21 Does the orifice drawdown from below the.top surface of the Yes permanent pool? Does the wetland minimize impacts to the receiving channel from the 22 1-yr,24-hr storm? Yes 23 Is a trash rack or other device provided to protect the outlet system? Yes Efecatfons 24 ElevatIon,peak attenuation above temporary pool(If applicable) 2336 .00 25 Elevation,temporary pool(top of the temporary inundation zone) 2334.25 26 Elevation,permanent pool(top of the shallow water zone)(fmsl) 2333.00 27 Elevation,bottom of shallow water zone(tmsl) 2332.25 28 Elevation,bottom of forebay deep pool at deepest point(at forebay 2329.67 entrance)(final) Elevation,bottom of forebay deep pool at shallowest point(at 29 forebay exit)(fist) 2330.00 -30 Elevation,bottom of non-forebay deep pool at deepest point(final) 2330.00 n Ma dngYoaes 31 Area,total surface area of the SW wetland at temporary pool elev. 10,203.00 (se fl) 32 Area,temporary inundation zone at temporary pool elev.(sq ft) • 3,623.00 33 Area,shallow water zone at temporary pool elev.(sq ft) • 4,3138.00 34 Area,forebay at temporary pool elev.(sq 8) 1,183.00 • 35 Area,ran-forebay deep pool at temporary pool elev.(sq It) 830.00 36 Percent area provided,temporary Inundation zone(should be 30- 3r96 45%) 37 Percent area provided,shallow water zone(should be 35-45%) 43% 38 Percent area provided,deep pool(forebay)(should be 10-16%) 12% • 39 Percent area provided,deep pool(non-forebay)(should be 5-15%) 8% Depths and Ovt/M 40 Peak attenuation depth above temporary Inundation zone(inches) .9 in Temporary inundation zone 41 depth(temporary porery pool to permanent 15 in pool)(Inches) 42 Shallow water zone depth(permanent pool to bottom of wetland) 9lo • (inches) • Depth,forebay at entrance(permanent pool to bottom of forebay 24 in • entrance)(Inches) Depth,forebay at exit(permanent pool to bottom of forebay exit) 18 in (inches) --_._._......_...._.� Depth,non-forebay deep pools(permanent pool to deep pool 46 bottom)(Inches) 2 in 46 If there Is an orifice,diameter(inches) 2 in 47 If there is a weir,weir height(inches) 3 in 48 If there Is a welr,welr length(Inches) _36 in 49 Drawdown Ume for the temporary pool(days) 2)5 • Wetland 3 9:27 AM 12/)202 STORMWATER WETLAND Sou and Plants .....»_.......__.... 60 Soil amendment depth(inches) 12 in 51 Has a soli amendment speclflcallon been provided? Yes 52 Has a landscaping plan Mat meets SW Wetland MDC(12)been Yes Provided? 63 Number of plants per 200 square feet(#)In the shallow water zone: Does the temporary Inundation zone planting comply with SW64 Yes Wetland MDC(14)? Are the dam structure and temporary III slopess planted In non- 65 clumping turfgrass? Yes 56 Will cattails be planted in the wetland? No ADDITIONAL IN FORMATION Please use this space to provide any additional Information about 57 the stnnnwater wetland(s): • • • • Wetland 4 3:27 AM 1217;2023