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Home My WebLink AboutSW6240905_Supplement-EZ Form_20241016 SUPPLEMENT-EZ COVER PAGE FORMS LOADED 3ROJECT INFORMATION 1 Project Name Boone Trail Farms Subdivision 2 Project Area(ac)__ 44 65 3 •Coastal Wetland Area(ac) 0 4 Surface Water Area(ac) 2.17 5 ,Is this project High or Low Density? Low 6 Does this project use an off-site SCM? No :OMPLIANCE WITH 02H.1003(4) I 7 1Width of vegetated setbacks provided(feet) • 30 k 8 Will the vegetated 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_. 1 14 Stormwater Wetland a 15 ;Permeable Pavement i 16 Sand Filter 17 Rainwater Harvesting(RWH) I 18 Green Roof 19 Level Spreader-Filter Strip(LS-FS) i 20 Disconnected Impervious Surface(DIS) I 21 'Treatment Swale 22 Dry Pond 3 • 23 ,StormFilter • 24 LSilva Cell 25 Bayfilter 26 ;Filterra �w FORMS LOADED DESIGNER CERTIFICATION 27 ;Name and Title: C. Scott Brown,PE 28 Organization: 4D Site Solutions, Inc 29 IStreet address: 409 Chicago Drive Ste 112 30 City,State,Zip: Fayetteville, NC 28306 . 31 Phone number(s): 910-426-6777 32 Email: sbrown@4dsitesolutions.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,jto the best of my knowledge and belief,true,accurate,and complete;and that the engineering plans,specifications, operation and maintenance agreedients and other supporting information are consistent with the information provided here. Designer ```,,,ii ',,, ' ...., 11c. 10.••.:14.1 ; Signature of esigner SEAL _ g 027452 • = = n •, GIN O) I`l� � Off-Z7-2�0T � `, Seal' ' ` J � 21-2G Date DRAINAGE AREAS 1 rls this a high density project? i 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 1 , Is all/part of this project subject to previous rule 5 ;versions? L No FORMS LOADED )R `AINAGE AREA INFORMATION T T Entire Site�� LD 1 _ 4 ;Type of SCM i 1, Low Density 5 ;Total drainage area(sq ft) 1 944 963 1,_944„963 6 iOnsite drainage area(sq ft) # 1,944,963 1,944,963 7 ,Offsite drainage area(sq ft) # 0 0 8 1Total BUAin project(sq ft) E 466768 sf 466768 sf New BUA on subdivided lots(subject to 9 permitting)(sq ft) ? 384209 sf 1 384209 sf j New BUA not on subdivided lots(subject to 10 (permitting)(sf) t 82559 sf i 82559 sf 11 )Offsite BUA(sq ft),__ sf _ sf_. -- _ 12 I Breakdown of new BUA not on subdivided lots: ;. Parking.(sq ft) Sidewalk(sq ft) Roof ft _ Roadway(sq ft) 82559 sf 82559 sf r -Future(sq ft) _._ .. f f..-. -Other, please specify in the comment box # # !below(sq ft). 4.New infiltrating permeable pavement on d 13 'subdivided lots IN!ft) New infiltrating permeable pavement not on x 4 14 subdivided lots(sq ft) ( _ Existing BUA that will remain(not subject to 15 :permitting)(sgft) I 16 I Existing j BUA that is already permitted(sq ft) ( #__- 17 Existing BUA that will be removed(sgft) 6290 sf 6290 sf 18 ;Percent BUA 24% I 24% 19 (Design storm(inches} 20 IDesign volume of SCM(cu ft), s 21 'Calculation method for design volume 1 _ ADDITIONAL INFORMATION ?Please use this space to provide any additional information about the/ 22 ddrannage area(s) i 1 LOW DENSITY DESIGN REQUIREMENTS FOR jLOW DENSITY PROJECTS FROM 02H.1003 rworominxximrsnex1 Is project below density thresholds set forth in the applicable stormwater rule? Yes 2 Does project maximize dispersed flow and minimize channelization of flow? Yes 3 Has the use of piping been minimized per.1003(2)(c)? Yes 4 ,Side slopes of the vegetated conveyaruxs(H:V) 3 sf 5 Maximum velocity in the vegetated conveyances during the 10-year storm? 4.5 6 ;Are curb outlet swales proposed? No o- 7 Maximum longitudinal slope of curb outlet swale(s)(%) 4 Na 8 Bottom width of curb outlet swale(s)(feet) Na t 9 t Maximum side slope of curb outlet swale(s)(H:V) Na ) t 10 Minimum length of curb outlet swale(s)(feet) n/a 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 I t13 'Have stormwater outlets been designed to prevent downslope erosion? Yes 14 Are variations to rule.1003 proposed? No i I. ADDITIONAL INFORMATia N 15 Please use this space to provide any additional Information about this low density project: 1 Drainage Pervious Q SlopeV v, Flow depth Swale BUAl area O # re)a (act lac) (cis) ' (%) (has) its) (f) 1 6.57 2.05 4.52 0.40 • 20.29 j 6.00 7.03 7.03 0.52 2 7.32 2.29 5.03 0.40 22.60 • 0.90 4.50 ' 2.65 1.14 3 1.34 0.59 0.75 , 0.50 4.13 6.00 4.68 4.68 0.47 4 1.41 0.62 • 0.79 0.50 4.35 0.90 4.50 4 1.56 • 0.89 4 6 0.44 j 0.14 0.30 0.40 1.36 2.90 4.50 j 2.05 0.39 6 1.37 0.43 0.94 0.40 4.23 0.75 4.50 1.38 0.93 `7 4.45 J 1.39 3.06 0.40 13.74 0.70 4.50 191 1.02 8 0.42 0.13 0.29 0.40 ' 1.30 2.70 4.50 1.94 0.40 9 0.12 0.06 0.05 0.60 0.53 2.50 j 4.50 1.35 0.29 10 17.53 5.48' • 12.05 • 0.40 43.26 1.00 2.00 1.79 2.25 11 0.16 J 0.04 0.12 0.35 0.43 2.40 • 4.50 ! 1.22 0.27 12 0.65 0.20 0.45 0.40 • 2.01 2.90 • 4.50 1 2.36 0.46 13 0.21 0.12 J 0.09 • 0.60 • 0.97 2.90 4.50 1.82 0.35 14 1.03 0.32 0.71 0.40 3.18 4.40 4.50 3.52 0.47 16 0.32 0.18 0,14 I 0.60 1.50 4.40 4.50 2.71 0.35 16 1.42 0.71 0.71 0.55 6.03 0.90 4.50 1.74 0.99 17._ 0.41 0.23 0.18 0.60 1.90 0.90 4.50 1.16 0.66 18 0,26 0.15 0,11 0.60 1.20 0.50 4.50 0.70 0.68 19 0.18 0.10 0.08 0.60 0.82 0.50 4.50 0.62 • 0.59 20 4.98 1.56 3.42 0.40 15.38 2.30 4.50 4.10 0.83 21 5.63 ' 1.76 3.87 J 0.40 17.39 1.50 4.50 3.35 1.02 22 6.03 1.68 4.15 0.40 18.62 • 0.80 2.00 1.47 1.75 23 1.94 0.61 1.33 0.40 5.99 2.60 4.50 3.24 0.71 24 0.07 0.04 0.03 0.60 0.33 2.60 4.50 1.16 0.24 26 2.40 0.75 1 65 0.40 7,41 1 50 • 4.50 j 2.53 0.91 26 0.14 0.08 J 0.06 0.60 0.63 1.50 4.50 1.07 0.37 27 3.69 1.15 2.54 0.40 11.39 3.70 5.04 5.04 0.79 28 0.28 J 0.16 0.12 , 0.60 J 1.29 3.70 4.50 2.32 0.35 29 5.23 1.63 3.60 1 0.40 16.15 0.50 4.50 1.68 1.24 30 0,39 , 0.22 4 0.17 I 0.60 1.81 0.50 4.50 0.81 , 0.78 Low Density (Continued) Drainage 6 I Pervious 1 i I ! 1 BUA Q I Slope 1 Va„oW Vag, ! Flow Swale# Area ! area C ; (ac)' (ac) (ac) t p (as) (°�6) I (fps) 1 (fps) i depth(ft) 31 2.51 I 0.78 f 1.73 I 0.40 i! 7.75 1 4.80 1 5.07 5.07 . 0.64 32 0 26 i 0.15 ; 0.11 0.60 1 21 4.80 4.50 1 2.64 0.32 33 9.90 3.09 ; 6.81 I 0.40 ` 30.57 1 0.90 2.00 a 1.61 i 1.93 34 0.72 1 0.23 0.50 ' 0.40 ! 2.22 ! 0.75 a 4.50 ; 1.10 1 0.74 35 1.20 ; 0.38 0.83 i 0.40 3.71 1.20 1 4.50 1 1.74 0.76 36 2.08 1 0.65 1 1.43 4 0 40 I 6 42 1 1_90 ' 4.50 2.67 1 0.62 37 38 f f.__._.__ ,._ 40 3 , 41 42 __ ___,__ _ _ _ i . _ 44 , x _ _.._. 46 47 1 ' 48 s s 's 1 . 50 ` i 51 I _.._ 52 i 53 54 4 E 55 F 56 � '_T _.�.. _i_. i t 57 ;_-._ ... .._ __._ 58 60 § j 3