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HomeMy WebLinkAboutSW6210502_Supplement-EZ Form_20210916SUPPLEMENT-EZ COVER PAGE FORMS LOADED PROJECT INFORMATION 1 Project Name James Farm Phase 2 2 Project Area ac 12.46 3 Coastal Wetland Area ac 0.064 4 Surface Water Area ac 5 Is this m'ect High or Low Density? Low 6 1 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 vegetated setback remain vegetated? Yes 9 If BLIA 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 SCIYMs: 11 Infiltration System 12 Bioretention Cell 13 Wet Pond 14 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 Treatment Swale 22 Dry Pond 23 StormFilter 24 Silva Cell 25 Bayfilter 26 Filterra FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title: Jeffrey A. Noblest PE Larry King & Associates RLS, PA 1333 Morganton Road Suite 201 28 Organization: 29 Street address: City, State, Zip: 30 Fayetteville, NC 28305 31 Phone number �: Email: 910-483-4300 32 jnobies@lkanda.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 a SEAL 31459 = 0'b %% %%% Sign e f ign Seal Date DRAINAGE AREAS 1 Is this a hi h densi ra ect? No 2 If so, number of drainage areas/SCMs 0 3 Does this project have low densq areas? Yes 4 If so, number of low density drainage areas 1 5 Is all/part of this project subject to previous rule versions? No FORMS LOADED DRAINAGE AREA INFORMATION 4 RT a of SCM Entire Site LD 1 n/a n/a 5 Total drainage area (sq ft 542,261 542621 6 Onsite drainage area (sq ft 7 Offsite drainage areas ft 8 Total BUA in project (sq ft 58309 sf 58309 sf 9(sq New BUA on subdivided lots (subject to permitting) ft 40500 sf 40500 sf 10permitting) New BUA not on subdivided lots (subject to s 17809 sf 17809 sf 11 Offsite BU(sq ft 159543 sf sf 12 Breakdown of new BUA not on subdivided lots: Parking (sq ft sf sf Sidewalk (sq ft sf sf sf sf Roof (sq ft Roadwa s ft) Future (sq ft Other, please specify in the comment box below (sq ft New infiltrating permeable pavement on subdivided lots (sq ft 17809 sf _ 17809 sf sf sf sf sf 13 sf sf 14 New infiltrating permeable pavement not on subdivided lots (sq ft sf sf 15 1 Existing BUA that will remain (not subject to permitting)s ft sf sf 16 1 Existing BUA that is already permitted (sq ft 159543 sf sf 17 Existing BUA that will be removed (sq ft sf sf 18 Percent BUA 11 % 11 % 19 Desi n storm inches 1.0 in 1.0 in 20 Desi n volume of SCM cu ft of cf 21 Calculation method for design volume n/a nla ADDITIONAL INFORMATION Please use this space to provide any additional information about the 22 1drainage area(s): LOW DENSITY DIESIGH REQUIREMENTSEQ9 LOW DEN!irry PMEUS FROM 0ZH.1M 1 2 3 Is project below density thresholds set forth in the applicable stormwater rule? Does project maximize dispersed flow and minimize channelization of flow? Has the use of piping been minimized per .1003(2)(c)? Yes Yes Yes 4 Side slopes of the vegetated conveyances (H:V) 3 sf 5 Maximum velo ty in the vegatated conveyances during the 10-year storm? 5 6 Are curb outlet swales proposed? No 7 Maximum longitudinal slope of curb outlet swale(s) 8 Bottom width of curb outlet swale(s) (feet) 9 Maximum side slope of curb outlet swale(s) (H:V) 10 Minimum length of curb outlet swale(s) (feet) 11 Are treatment swales used instead of curb outlet swales? 12 Is stormwater released at the edge of the setback as dispersed Row? Have stormwater outlets been designed to prevent downslope erosion? Are variations to rule .1003 proposed? Yes 13 Yes No 14 ADDITIONAL INFQRMATION 15 Please use this space to provide any additional information about this low density project: Swale # Dralnape Aareca BUA (ac) Perwout area 0 Q Slope (cfs) N V,,,,, V,nw, (fps) (fps) Flow depth (ft) 1 0.75 0.28 0.48 0.08 0.52 0.54 3.09 0.60 7.85 4.83 5.00 5.00 4.83 2.67 0.43 0.25 2 0.14 0.06 3 0.21 0.11 0A0 0.60 1 1.00 10.11 5.00 4.00 0.27 4 0.53 0.13 0.39 0.45 1.89 7.85 5.00 4.27 0.35 5 0.68 0.23 0.46 0.50 2.70 4.83 5.00 3.89 0.44 6 1.00 0.44 0.56 0.57 4.52 10.11 5.00 4.99 0.21 7 1.21 0.53 0.66 0.57 5.47 0.40 5.00 1.85 0.71 8 2.10 0.69 1.41 0.50 8.33 2.09 5.00 3.79 0.58 9 10 11 12 13 14 15 16 17 18 19 20 21 22 28 24 25 26 27 28 29 30