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Home My WebLink AboutSW3190702_Supplement-EZ Form_20191021SUPPLEMENT-EZ COVER PAGE E37RM5 LVAu • 1' PROJECT INFORMATION 1 2 Project Name Project Area (ac) — -. - — Coastal Welland Area jacl0 Surface Water Area (acl Is this project High or Low Dena -- Waddington Points ---- 77.3 3 6.49 No 4 5 6 Does this project use an off -site SCM? C LIANCE WITH 92H .1003 4 7 Width of vegetated setbacks_Vrovided jfeel _ Will the vegetated setback remain fated? 30 Yes 8 9 Is BUA other that as listed in .1003 4 -d out of the setback? You 10 Is streambank stabilization proposed on this project? No NUMBER AND TYPE OF SCMa: 11 Infiltration 5 tam 0 12 Biorebrition Cell 0 13 Wet Pond _ _ _ _ Stormwater Wetland Permeable Pavement 4 14 _ 0 0 15 16 Sand Filter 0 17 lRainwater Harvestin RWHI 0 18 Green Roof Levi reader -Fitter S 1LS-FS) Disconnected Impervious Surface (DIS)0 Treatment Swale 0 19 20 0 0 21 22Ry Pond 0 23 StormFilter_ _ 0 24 25 Silva Cell 0 Bayliter 0 Filterra — 0 26 FORMSLDADt Name and Title: j Mason Greeson�PE Senior Associate _ 223 N Graham Street ate, Zip: _ Chariotte NC.282fl2— number(sl 704-33-0326 MGreeson@landdesign.com G arKatcon91aoaneft 1 certify, under penally of law that this Supplement-EZ form and all supporting Information were prepared under my direcllon or supervision; tot Ore Wormadon provided in the form is, to the hest of my knowledge and WWI, Me, accurate, and complete, and that the erginsedn0 plans. sp m ations. operation and maintenance agrsernents and other supporting Information are consistent with the informadon provided here. ��,��► CARO �i O: Q`. ESS/ y . OF ��.••.7 ?'a T SEAL 043168 ''��O Signature of Deslgndr -7't?' i Date DRAINAGE AREAS 1 Is this a high densit ro act? Yes 2 If so number of draina a areas/SCMs 4 Is all/part of this project subject to previous rule 3 versions? No FORMS LOADED DRAINAGE AREA INFO 4 Type of SCM Entire Site 1 WET POND 2 WET POND 3 WET POND 4 WET POND 5 Total BUA in project s ft 1384773 sf 560617 sf 122404 sf 374616 sf 327136 sf 6 New BUA on subdivided lots (subject to ermittin s ft 934644 sf 369601 sf 79238 sf 237985 sf 247820 sf 7 New BUA outside of subdivided lots (subject to permitting)s 450129 sf 191016 sf 43166 sf 136631 sf 79316 sf 8 Offsite - total areas ft 9 Offsite BUT s ft ####I Breakdown of new BUA outside subdivided lots: - Parkin s ft - Sidewalks ft 165980 sf 69820 sf 17609 sf 46453 sf 32098 sf Roof (sq ft - Roadwa s ft 284149 sf 121196 sf 25557 sf 90178 sf 47218 sf - Future sq ft - Other, please specify in the comment box below s ft #### New infiltrating permeable pavement on subdivided lots (sq ft #### New infiltrating permeable pavement outside of subdivided lots s ft #### Exisitng BUA that will remain (not subject to ermittin s ft #### Existin BUA that is alread ermined s ft #### Existin BUA that will be removed sq ft #### Percent BUA 76% 66% 63% 76% #### Design storm inches 1 IN 11N 1 IN 1 IN #### Desi n volume of SCM cu ft 45123 cf 9948 cf 30577 cf 26321 cf #### Calculation method for design volume POND PACK POND PACK POND PACK POND PACK ADDIT ATION ce to provide any additional information about the 4drainage WET POND 1 Drainage area number 1 2 3 4 2 Design volume of SCM (cu ft) 60736 cf 15345 cf 46934 cf 35718 cf GENERAL MDC FROM 02H .1050 1 L the SCM i—d to treat the SW from all rt.—, at hnild- Al Y. 1 -y— I Y. I Xx 1 4 Is the SCM located away from contaminated soils? Yes Yes Yes Yes 5 What are the side slopes ofthe SCM (H:V)? 3:1 3:1 3:1 3:1 6 Does the SCM have retaining walls, gabion walls or other engineered side slopes? M No No No No 7 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes Yes Yes Yes 8 Is there an overflow or bypass for inflow volume in excess of the design volume? No No No No 9 What is the method for dewatenng the SCM for maintenance? Pump (preferred) Pump (preferred) Pump (preferred) Pump (preferred) 10 If applicable, will the SCM be cleaned out after construction? Yes Yes Yes Yes 11 Does the maintenance access comply with General MDC (8)? Yes Yes Yes Yes 12 Does the drainage easement comply with General MDC (9)? Yes Yes Yes Yes 13 R the SCM is on a single family lot, does (will?) the plat comply with General MDC (10)? so 14 Is there an O&M Agreement that complies with General MDC (11)? Yes Yes Yes Yes 15 Is there an O&M Plan that complies with General MDC (12)? Yes Yes Yes Yes 16 Does the SCM follow the device specific MDC? Yes Yes Yes Yes OND MDC FI Method used Elevation of the main pool bottom -(top of sediment Does the orifice drawdown from below the top surface of the permanent pool? Does the pond minimize impacts to the receiving channel from thi yr, 24-hr storm? Are fountains proposed? (If Y, please provide documentation that MDC(9) is met.) Is a trash rack or other device provided to protect the outlet systei Are the dam and embankment planted in non -clumping turf grass Species of turfthat will be used on the dam and embankment Has a planting plan been provided for the vegetated shelf? ONAL INFORMATION Please use this space to provide any additional information about wet oond(s): rae I rea I rea I rea I SA/DA I SA/DA I SA/DA I SA/DA 'Sf[rtrl• r r r . r r r �HIpI11H Yes I Yes 1 Yes I Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No Yes Yes Yes Yes Yes Yes Yes Yes HYBRID HYBRID HYBRID HYBRID BER MU DA I BERMUDA BERMUDA BERMUDA No I No No I No Wet Pond 3 10:45 AM 10/14/2019