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Home My WebLink AboutSW3210302_Supplement-EZ Form_20221005SUPPLEMENT-EZ COVER PAGE FORMS LOADED PROJECT INFORMATION 1 Project Name 2 Project Area (ac)--------- 3 Coastal Wetland Area (ac) P Surface Water Area ac) Is this roect Hi h or Low Densit ? Does this project use an off -site SCM? COMPLIANCE WITH 02H .1003(4) 7 Width of vegetated setbacks provided (feet) N/A 8 1 Will the vegetated setback remain vegetated? N/A 9 If BUA is proposed in the setback, does it meet NCAC 02H. 1 003(4)(c-d)? N/A _ 10 Is streambank stabilization proposed on this project? No NUMBER AND TYPE OF SCMs: 1 Infiltration S stem 12 1 Bioretention Cell _ 13 JWet Pond 14 1 Stormwater Wetland 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 1 Treatment Swale 22 Dry Pond StormFilter Silva Cell 23 24 25 Bayfilter 26 Filterra FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title:Daniel Shabelde_en, Engineer 28 Or anization: Shabeldeen Engineering, PA 29 Street address: 3145 Tate Blvd. SE Cit ,State, Zip: Hickory, NC 28602 31 Phone numbers : 828.320.7252 32 Email: dan@shabeldeen-engineering.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. Signatur f Designer Date DRAINAGE AREAS 1 Is this a high density project? Yes 2 If so, number of drainage areas/SCMs 1 3 Does this project have low density areas? No 4 If so number of low densit drainage areas 0 5 Is all/part of this project subject to previous rule versions? No FORMS LOADED DRAINAGE AREA INFORMATION Entire Site 1 4 Type of SCM Wet Pond 5 Total drainage area (sq ft 343,879 6 Onsite drainage area (sq ft) 338,379 7 Offsite drainage area (sq ft 5,058 8 Total BUA in project (sq ft) 290,479 9 New BUA on subdivided lots (subject to permitting) (sq ft sf 10permitting) New BUA not on subdivided lots (subject to s sf 11 Offsite BUA (sq ft sf 12 Breakdown of new BUA not on subdivided lots: Parkin (sq ft 6822 sf Sidewalk (sq ft) sf Roof (sq ft 27000 sf Roadway s ft 18384 sf Future (sq ft sf Other, please specify in the comment box below (sq ft 238273 sf 13 New infiltrating permeable pavement on subdivided lots (sq ft sf 14 New infiltrating permeable pavement not on Isubdivided lots (sq ft sf 15permitting) Existing BUA that will remain (not subject to s ft sf 16 Existing BUA that is already permitted (sq ft sf 17 Existing BUA that will be removed (sq ft sf 18 Percent BUA 84% 19 Design storm inches 1.0 in 20 Design volume of SCM cu ft 23633 cf 21 1 Calculation method for design volume Simple ADDITIONAL INFORMATION 22 Please use this space to provide any additional information about the drainage area(s): Paved and gravel areas for equipment storage WET POND area number ERAL MDC FROM 02H .1050 3 Is the SCM sized to treat the SW from all surfaces at 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 6 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No 7 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes 8 Is there an overflow or bypass for inflow volume in excess of the design volume? Yes 9 What is the method for dewatering the SCM for maintenance? Pump (preferred) 10 If applicable, will the SCM be cleaned out after construction? Yes 11 Does the maintenance access comply with General MDC (8)? 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 General MDC 10 ? N/A 14 Is there an O&M Agreement that complies with General MDC (11)? Yes 15 Is there an O&M Plan that complies with General MDC (12)? Yes 161 Does the SCM follow the device specific MDC? Yes 17 Was the SCM designed by an NC licensedprofessional? I Yes 18 Sizing method used SA/DA 19 Has a stage/storage table been provided in the calculations? Yes 20 Elevation of the excavated main pool depth (bottom of sediment removal) (fmsl) 932.25 21 Elevation of the main pool bottom (top of sediment removal) (fmsl) 932.75 22 Elevation of the bottom of the vegetated shelf (fmsl) 940.00 23 Elevation of the permanent pool (fmsl) 940.00 24 Elevation of the top of the vegetated shelf (fmsl) 941.00 25 Elevation of the temporary pool (fmsl) 942.00 26 Surface area of the main permanent pool (square feet) 7526 27 Volume of the main permanent pool (cubic feet) 38008 cf 28 Average depth of the main pool (feet) 5.10 ft 29 Average depth equation used Equation 2 30 If using equation 3, main pool perimeter (feet) 31 If using equation 3, width of submerged veg. shelf (feet) 32 Volume of the forebay (cubic feet) 5713 cf 33 Is this 15-20% of the volume in the main pool? Yes 34 Clean -out depth for forebay (inches) 54 in 351 Design volume of SCM (cu ft) 24246 cf 36 Is the outlet an orifice or a weir? Orifice 37 If orifice, orifice diameter (inches) 2.5 38 If weir, weir height (inches) 39 If weir, weir length (inches) 40 Drawdown time for the temporary pool (days) 2.1 41 Are the inlet(s) and outlet located in a manner that avoids short- arcuitin ? Yes 42 Are berms or baffles provided to improve the flow path? No 43 Depth of forebay at entrance (inches) 60 in 44 Depth of forebay at exit (inches) 66 in 45 Does water flow out of the forebay in a non -erosive manner? Yes 46 Width of the vegetated shelf (feet) 6 ft 47 Slope of vegetated shelf (H:V) 6:1 48 Does the orifice drawdown from below the top surface of the ermanent pooI? Yes 49 Does the pond minimize impacts to the receiving channel from the 1- r, 24-hr storm? Yes 50 Are fountains proposed? (If Y, please provide documentation that MDC 9 is met. No 51 Is a trash rack or other device provided to protect the outlet system? Yes 52 Are the dam and embankment planted in non -clumping turf grass? Yes 53 Species of turf that will be used on the dam and embankment fescue 54 Has a P antinq plan been provided for the vegetated shelf? Yes DITIONAL INFORMATION 55 Please use this space to provide any additional information about the wet pond(s): Wet Pond 1 10:12 AM 10/5/2022