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Home My WebLink AboutSW6200704_Supplement-EZ Form_20200730SUPPLEMENT-EZ COVER PAGE FORMS LOADED PROJECT INFORIMATION 7 Project Name y _ Cypress Pointe 2 Project Area {aq_ .._ 50.88 3 Coastal Wetland Area ac p 4 Surface Water Area ac 0 5 Is this project High or Low Densi ? High 6 Does this project use an off -site SCM? No COMPLIANCE WITH 02H.1004(4) 7 Width of v etated setbacks Provided feet 45 8 Will the vegetated setback remain vegetated? Yes 9 Is BUA other that as listed in .1003 4 c-d out of the setback? Yes 10 Is streambank stabilization proposed on this project? No NUMBER AND TYPE OF SCMs: 11 1 Infiltration S stem 0 12 Bioretention Cell 0 W 0 p 13 fWet Pond 14 Stormwater Wetland 15 Permeable Pavement 0 16 Sand Filter 0 17 Rainwater Harvesting RWH 0 18 Green Roof 0 19 Level Spreader -Filter Strip LS-F5 p 20 Disconnected Impervious Surface(Dig) 0 21 Treatment Swale 0 22 Dry Pond 2 23 StormFiiter 0 24 Silva Cell 0 25 Ba fter 0 26 Filterra 0 FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title: Jeffrey A. Nobles, PE Lany King & Associates, RLS, PA 1333 Morgaton Road, Suite 201 28 O anization: 29 Street address: 30 City, State, Zip: Phone numbers : Email: Fayetteville, NC 28305 910-483-4300 jnoblesClkanda.com 31 32 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 h the information provided here. ..tt�r�rrli • f� FeSS/ .p.0 SEAL =_ 31459 ,C. v�;A NGINI E�`°� �•A. Signat De ' ne DRAINAGE AREAS 1 Is this a high density project? Yes 2 If so, number of drainage areas/SCMs 2 Is all/part of this project subject to previous rule 3 versions? No FORMS LOADED DRAINAGE AREA INFORMATION Entire Site 1 2 4 Type of SCM Dry Pond DryPond 5 Total BUA in roject s ft 4799454 sf 158231 sf 321223 sf 6 New BUA on subdivided lots (subject to permitting) s ft New BUA outside of subdivided lots (subject to Dermittinal (st)115454 364000 sf 124000 sf 240000 sf 7 sf 34231 sf 81223 sf 8 Offsite - total area (sq ft sf sf sf 9 Offsite BUA s ft sf sf sf 10 Breakdown of new BUA outside subdivided lots: Parking (sq ft Sidewalk ft 68250 sf 23250 sf 45000 sf Roof (sq ft 295750 sf 100750 sf 195000 sf Roadway s ft 115454 sf 34231 sf 81223 sf - Future (sq ft sf sf sf Other, please specify in the comment box below (sq ft sf sf sf 11 New infiltrating permeable pavement on subdivided lots (sq ft sf sf sf 12 New infiltrating permeable pavement outside of subdivided lots (sq ft sf sf sf 13 Exisitng BUA that will remain (not subject to ermitting) (sq ft sf sf sf 14 Existin BUA that is a fready permitted (sq ft sf sf sf 15 Existing BUA that will be removed ft sf sf sf 16 Percent BUA 41% 42% 40% 17 Desi n storm inches 1 in 1 in 1 in 18 Design volume of SCM cu ft 40841 cf 13426 cf 27415 cf 19 lCalculation method for design volume Simple Method Simple Method ADDITIONAL INFORMATION 20 Please use this space to provide any additional information about the drainage area(s]: DRY POND LE1 Drainage area number 2 Design volume of SCM NERAL MDC FROM 02H .1050 Is the SCM sized to treat the SW from all surfaces at 3 build -out? Yes Yes 4 Is the SCM located away from contaminated soils? Yes Yes 5 What are the side slopes of the SCM (H:V)? 3:1 3:1 Does the SCM have retaining walls, gabion walls or 6 other engineered side slopes? No No Are the inlets, outlets, and receiving stream protected 7 from erosion (10-year storm)? Yes Yes Is there an overflow or bypass for inflow volume in 8 excess of the design volume? Yes Yes What is the method for dewatering the SCM for 9 maintenance? Drawdown Orifice If applicable, will the SCM be cleaned out after Drawdown Orifice 10 construction? Yes Yes Does the maintenance access comply with General 11 MDC (8)? Yes Yes Does the drainage easement comply with General 12 MDC (9)? Yes Yes If the SCM is on a single family lot, does (will?) the 13 plat comply with General MDC (10)? Is there an O&M Agreement that complies with 14 General MDC (11)? Yes Yes Is there an O&M Plan that complies with General 15 MDC (12)? Yes Yes 16 Does the SCM follow the device specific MDC? Yes Yes Was the SCM designed by an NC licensed 17 professional? Yes Yes 18 SHWTelevation (fmsl) 119 116 19 Elevation of the bottom of the dry pond (fmsl) 124 5 ft 121 5 ft 20 Distance from bottom to SHWT (feet) Elevation of the temporary pool during the design storm (feet) Ponding depth of the design storm (feet? Will the dry pond be uniformly graded to flow toward the outlet? Is a low flow channel being provided? Are the inlet(s) and outlet located in a manner that avoids short-circuiting? Will berms or baffles be provided to increase the flow path? 21 127 ft 124 ft 22 3 ft 3 ft 23 Yes Yes 24 Yes Yes 25 Yes Yes 26 No No 27 What method of pretreatment will be provided? forebay forebay 28 Diameter of drawdown orifice (in) 2 in 3 in 29 Drawdown time for the temporary pool (hours) 83.19 49.65 30 Does the pond minimize impacts to the receiving channel from the 1-yr, 24-hr storm? Yes Yes Yes Yes 31 Is there a small permantent pool near the orifice to prevent clogging? the outlet be designed to prevent clogging? 32 lWill Yes Yes 33 Are the dam and embankment planted in non- clumping turf grass? Yes Yes 34 Species of turf that will be used on the dam and embankment Bermuda Bermuda 35 Will trees and shrubs be prevented from growing on the dam and embankment? Yes Yes I iONAL 1141.01iMA I IiNY Please use this space to provide any additional 36 information about the infiltration system(s): Dry Pond 1 6:54 PM 7/16/2020