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Home My WebLink AboutSW3200903_Signed SuppEZ_20210310SUPPLEMENT-EZ COVER PAGE F2aMS LOADED COMPLIANCE WITH 02H .1003(4) 7 Width of vegetated setbac4j�m ided feet rrfa 8 Will the vegetated setback remain tated? _ 9 If BUA Is proposed In the setback, does it meet NCAC_0_2H.1003f4Xr d}? _ _ _ 10 Is streambank stabilization vromsed on this Droiect? NUMBER AND TYPE OF SCMs: 21 22 23 24 25 26 FORMS LOAD-0 :SIGNER CERTIFICATION 27Name and Tale: 28 O nni_zation: 29 street address: 32 IEmail: Carlton Burton, PE _ _Burton Enpineedn Associata_s 5950 Fairvlew.Road, Suite 100 Charlotte, NC 28210 7045538881 cburtonburtoneng,00m Certification Statement: I certify, under penalty of law that this Supplement-FZ 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. Desfener SEAL _ 12557 fi y (i• 4,, u11111a11111 O sea/ f)g-� Signature of Designer Date 3 / ►43Iz1 DRAINAGE AREAS 1 Is this a high densq project? Yes 2 If so number -of drainage areas/SCMs _ 1 3 Does this ro e_ct have low density areas? No 4 If so number of low density drainage areas 0 Is all/part of this project subject to previous rule 5 versions? No FORMS MAQEb AREA INFORMATION s drainage area (sq ft) BUA in project (sq ft) BUA on subdivided lots (subject to ittin sgft� _ BUA not on subdivided lots (subject to 45.261 ---- _ 1775941 sf sf ...-- - Sidewalk (sq ft -.Roof ft) - Roadway s ft - Future ft _ _ - Other, please specify in the comment box below j`sq ft) - - New Infiltrating permeable pavement on subdivided lots Jsq ft} New inflltrating permeable pavement not on subdivided lots Qq ft) Feasting BUA that will remain (not subject to permitting) (sq ft) 5_345 sf sf _735550 618365 sf 346365 sf 13 14 _ 15 - _ sf sf sf 16 Existina BUA that is already permitted (sq ft) __ _ sf 17 Existing BUA that will be removed Jsq ftJ _ sf 18 Percent BUA _ _ _ 909E 19 Design storm (inches) _ 1.0 in 20 Design volume of SCM feu ftl 141293 21 lCalculation method for design volume Simple Me ADDITIONAL INFORMATION Please use this space to provide any additional 22 drainage area s WET POND 1 Drainage area number _ 1 21 Minimum mvired treatment volume (cu ft) 141309 of 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. sioles of the SCM (H:V)? 3:1 _ 6 Does the SCM have retaining walls, gabion walls or other pnj2LnGerqP side slopes? No Are the inlets, outlets, and receiving stream protected from erosion 7 10-roar stop 77 Yes _ e Is there an overflow or bypass for Inflow volume in excess of the ldesipn volume? Yes 9 What is the method for dewatering the SCM for maintenance? Drawdown Orifice - - -- 10 If applicable, _will the_SCM be cleaned out after construction? Yes 11 r Does the maintenance access comply with deneral MDC B ? Yes 12 D the theoes th drainage easement oomply with General MDC 8 ? 13 If the SCM is on a single family lot, does (will7) the plat comply with General MDC 10 7 Yes N/A 14 Is there an O&M Agreement that complies with General MDC (11)? Yes 15 Yes Is there an 0&M Plan that complies with General MDC (1k? _ Does the SCM follow the device specific MDC? 16 Yes 17 Was the SCM deskmed by an NC licensed arofessional? Yes 1 %Sizing method used SAIDA 19 Has a slegelstorage table been provided in the calculations? Elevationof the excavated main pool depth (bottom of sediment removal) (fmsl) Yes 20 8�'� 21 Elevation of the main pool bottom (top of sediment removal) (fmsl) 827.00 830.00 22 Elevaton of the bottom of the vegetated shelf fmsl 23 Elevation of the permanent pool (fmso Eleve6ofthetoy of the vegetated shelf (fmso 830.50 831.00 Elevation of the temporary pool (finsl) 830.76 Surface area of the main permanent ppol (square feet) 525 105694 Volumeof the main permanent pool (cubic teeth 416434cfAve depth of the main pool feet 29 Average dg4h equation used 30 K using equation 3, main pact perimeter fee 31 If using equation 3, width of submerged vpg.-shelf (feet) 32 Volume of the foreba bic feet] — 80368 cf _ - 33 Is this 15-20% of the volume in the main PWI? Yes — 34 Clean -out de _for foreinches 12 In 35 Design volume of SCM (cu ft) 282704 of __— 36 Is the outlet an orifice or a weir? Orifice _ _ 37 If orifice, orifice diameter finches) 2 6" _ 38 If weir, weir height Cinches) _ _ 39 If weir, weir length (inches) _ 40 Drewdown Ume for the temporary p" (da�sj _ — 3 41 Are the inlet(s) and outlet located in a manner that avoids short - _ ;circuiting? _ - Yes Yes __ 42'Are berms or baffles provided to improve the flow path? _- 43_Depth of foreba�r at entrance (inches BB in _ 44,Depth of fore4y at exit (inches} 54 in 45 Does water flow out of the forebay in a non -erosive manner? Yes 46,Width of the v2qalaked shelf {feet) _ 6 ft .. 48Doe47 Slope_ of vogetated shelf (H.-V) _ s the orifice drawdown from below the top surface of the 48 pernanentpod? _ — 6:1 Yes Yes 49 Does the pond minimize impacts to the receiving channel from'lha 1 24-hr storm? Are fountains proposed? (if Y, please provide documentation that MDCL9) is meta 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 -dumping turf grass? Yes 58 Species of turf that will be used on the dam and embankment 54 Hasa lantin plan been vfded for the y2gqtatedl shah? _ Yes ADDITIONAL INFORMATION — - 55!Please use this space to provide any additional information about the wet pond(s): Net Pond 1 2:32 PM 3/10/2621