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HomeMy WebLinkAboutSW6220503_Supplement-EZ Form_20220823SUPPLEMENT-EZ COVER PAGE PROJECT INFORMATION Evit's Place N _ 1 Project Name 8.34 2 Project Area (ac) V_�sv 0 3 Coastal Wetland Area (ac) _ 0 1 4 Surface Water Area (ac)_._ _ - - ____ Low 5 Is this project High or Low Density?- - --- No 6 Does this project use an off -site SCM? --------a--- COMPLIANCE WITH 02H .1003(4) 30 7 Width of vegetated setbacks provided feet(- ) ___N_se._ ` n; a 8 Will the vegetated setback remain vegetated? -- --- NIP, 9 If BUA is proposed in the setback, does it meet NCAC 02H.1003�4�(c d)�_ . 10 Is streambank stabilization proposed on this project? No NUMBER AND TYPE OF SCMs r0 11 Infiltration System _ 0 12 Bioretention Cell 13 Wet Pond — — -- ---- _.. -- - - --- -..' 14 Stormwater Wetland _ 0 15 Permeable Pavement 16 Sand Filter 17 Rainwater Harvesting (RWH) _ 0 18 Green Roof -- ---- - --- ------ - - 19 Level Spreader -Filter Strip (LS-FS) _ _ __-___ ,. 0 20 Disconnected Impervious Surface (DIS) 0 21 Treatment Swale - - 0 22 Dry Pond 0 23 StormFilter 0 -- 0 ( 24 Silva Cell 25 Bayfilter __ 0 26 Fifterra 0 -- - DESIGNER CERTIFICATION 27 Name and Title Fleet Ternple, PE 28 Organization: Fleet Temple Engineering, PLLC 29 Street address: 5245 Red Hill Church Rd. 30 City, Zi Coats, NC 27521 31 —`-_�-� Phone number(s): 910-658-2446 32 Ernail. fleet@ftempleengineering.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 `illC j//// �` T� A 44 1 J��7 nature of Designer DRAINAGE AREAS 1 Is this a high density project? A �No 2 If so, number of drainage areas/SCMs 0 3 Does this project have low density areas? Yes 4 If so, number of low density drainage areas j Is all/part of this project subject to previous rule 5 ;versions? No - MS LOADED DRAINAGE AREA INFORMATION Entire Site LID 1 4 Type of SCM 5 Total drainage area (sq ft) 363092 363092 _ 6 Onsite drainage area (sq ft) 363092 -,___ 363092 f 7 Offsite drainage area ft 0 ) 0 8 Total BUA in project (sq ft) _ 86363 sf� 86363 sfI New BUA on subdivided lots (subject to permitting) 9 (sq ft) _ 63600 sf 63600 sf New BUA not on subdivided lots (subject to g 10 permitting) (st) 22763 sf 3 22763 sf 11 Offsite BUA (sq ft) sf I 12 Breakdown of new BUA not on subdivided lots: Parkirxt Sidewalk (sq ft) - Roof� ft) - Roadwa�r (sq ft) _ _ 22763 sf 22763 sf _�� . �� Future (sq 1t) - Other, please specify in the comment box I below (sq ft New infiltrating permeable pavement on 13 subdivided lots (sue ft) New infiltrating permeable pavement not on a 14 subdivided lots (sq ft)�_ Existing BUA that will remain (not subject to 15 permitting) (sq ft) 16 Existing BUA that is already permitted (sq ft 17 Existing BUA that will be removed —� 18 Percent BUA € 2496 24% 19 Design storm (inches) E 1.0 to 1.0 in 20 Design volume of SCM (cu ft) 21 Calculation method for design volume ADDITIONAL INFORMATION Please use this space to provide any additional information about the 22 drainage area(s): s LOW DENSITY DE N'REQUIRE VENTS: OR LOW DENSITY PROJECTS FROM C2H ,10G3. 7 1 Is project below density thresholds set forth in the applicable stormwater rule? _ Yest___ 2 Does project maximize dispersed flow and minimize channelizabon of flow? Yes 1 3 Has the use of piping been minimized per .1003(2)(c)? Yes t 4 Side slopes of the vegetated conveyances (H:V) 31 5 Maximum velocity in the vegetated corrveyan_ces during the 10-year storm? 37 6 Are curb outlet swales proposed? _ Yes 7 Maximum longitudinal slope of curb outlet swale(s) (%) 5% 8 Bottom width of curb outlet swale(s) (feet) 4 ft 9 Maximum side slope of curb outlet swale(s) (H:V) 31 10 Minimum length of curb outlet swale(s) (feet) 100 It 11 Are treatment swales used instead of curb outlet swales? No 12 Is stormwater released at the edge of the setback as dispersed flow? Yes 13 Have stormwater outlets been designed to prevent downslope erosion? Yes 14 Are variations to rule 1003 proposed? No ADDITIONAL INFORMATION .<��. ,�.,� - :-:,,�� 15 Please use this space to provide any, additional information about this Iow density project Swale Drainage 8UA Pervious q Slope V„b„ V�, ; , Flow depth # Area (ac) area C (cfs) (%) (fps) (fps) (ft) (a4)_..__ ICao _u--� --.._... -_ ._ ---1--------- _.-_ 1 0.10 002 008 050 040 2.66 5.00 200 030 2 013 003 0.10 050 050 2.66 5-00 210 030 3 010 0 02 008 050 040 1.00 500 1-40 0.40 4 0.50 012 0.38 050 1 80 100 5.00 2.10 060 5 010 0.02 0.08 050 040 152 500 170 0.30 i 6 077 018 0.59 0.50 280 1 52 500 2.70 0.70 7 013 0.03 0.10 0.50 0.50 2.39 500 2.10 0-30 8 030 0.07 0.23 0.50 1.10 2.39 500 2.50 040 9 030 007 0.23 0.50 1 10 320 5. O 2.80 040 10 067 0.16 051 050 240 320 500 3.40 050 11 _ 1-10 0.26 084 0.50 4.00 5.00 500 3.70 020 12 13 14 15 16 ..- ------ --- -- ----- ------ _- -- - - --- 17 '. - - - --- _ -- 18 ; - -- -- - - -- - - - - 19 ) - 2021 j --_ 4 - - 22 23 I 24 25 26 ; t 27 2E 29 .. 30 __ e