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Home My WebLink AboutSW5220801_Supplement-EZ Form_20221220SUPPLEMENT-EZ COVER PAGE PROJECT INFORMATION 1 Project Name Project Area ac Coastal Wetland Area ac Surface Water Area ac Dollar General 4.83 - High No 2 3 4 5 Is this project High or Low Density? 6 Does this project use an off -site SCM? COMPLIANCE WITH 02H .1003 44 7 Width of vegetated setbacks provided feet 30 8 Will the vegetated setback remain vegetated? Yes 9 If BUA is pro2osed in the setback does it meet NCAC 02H.1003 4 c-d ? No 10 Is streambank stabilization proposed on this project? No NUMBER AND TYPE OF SCMs. 11 Infiltration System 0 12 Bioretention Cell 0 13 Wet Pond 0 14 Stormwater Wetland 1 15 Permeable Pavement 0 16 Sand Filter 0 17 Rainwater Harvesting RWH 0 18 Green Roof 0 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 24 Silva Cell 0 25 Bayfilter 0 26 Filterra 0 FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title: 28 Organization: 29 Street address: 31 1 Phone number(s): 32 Email: Matt Lowder, Bowman North Carolina, Ltd- 4006 Barrett Drive, Suite 104 Raleigh, NC 27609 919-553-6570 mlowder@bowman.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. ignat a of Designer 1Z L ZL Date DRAINAGE AREAS 1 Is this a -hioh density project? Yes 2 If so, number of drainage areas/SCMs 1 3 Does this project have low density areas? No 4 If so number of low density drainage areas 0 5 Is all/part of this project subject to previous rule versions? No FORMS LOADED DRAINAGE AREA INFORMATION Entire Site 1 4 Type of SCM - Wetland 5 Total drainage area (sq ft 210577 sf 47553 6 Onsile drainage area (sq fl 210577 sf 47553 7 Offsile draina ge area (sq ft 8 Total BUA in pro4ect (sq ft 36178 sf 35697 sf 9permitting) New BUA on subdivided lots (subject to s ft 10permitting) New BUA not on subdivided lots (subject to s 11 Offs ite BUA s 12 Breakdown of new BUA not on subdivided lots: -Parking s ft 23017 sf 22536 sf Sidewalk �sq ft 2521 sf 2521 sf Roof (sq ft 10640 sf 10640 sf Roadway s ft Future (sq ft Other, please specify in the comment box below (sq ft 13 New infiltrating permeable pavement on subdivided lots (sq ft 14 New infiltrating permeable pavement not on subdivided lots (sq ft 15permitting) Existing BUA that will remain (not subject to s ft 16 Existing BUA that is already permitted (sq ft 17 Existing BUA that will be removed (sq ft 1191 sf 1191 sf 18 Percent BUA 17.18% 75.07% 19 Des n storm inches 1.0 in 20 Design volume of SCM (cu ft) 3554 cf 21 Calculation mefhod for design volume Simple Method ADDITIONAL INFORMATION Please use this space to provide any additional information about the 22 draina a area(a): There is 481 sf (impervious bypass) of the driveway that will not be treated by the SCM. STORMWATER WETLAND 1 Draina a area number 1 r2 Minimum required treatment volume (cu ft) 3554 d [GeNtRALM fROM 02H •loss 3 is the SCM sized to treat the SW from all surfaces at build -out? Yes 4 Is the SCM located away from contaminaled soils? Yes 5 What are the side slopes of the SCM H:V ? 3:1 8 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No 7 Are the inlets, outlets, and receiving stream protected from erosion 10- ear storm)? Yes 8 Is there an overflow or bypass for inflow volume in excess of the design volume? Yes 9 Whal is the method for dewatering the SCM for maintenance? Drawdown Orifice 10 If applicable. will the SCM be cleaned out after construction? Yes 11 Does the maintenance access comply with General MDC (8)? Yes 12 Does the drainage easement comply with General MDC 9)? Yes 13 If the SCM is on a single family lot, does (will?) the plat comply with General MDC 10 ? N/A 14 Is there an O&M Agreement that complies with General MDC (11)? Yes 15 Is there an O&M Plan that complies with General MDC (12)? Yes 16 Dces the SCM follow the device specific MDC? Ygs 17 Was the SCM designed b an NC linensod rafesslonal? Yea UffifW-1054 18 Design volume of SCM (cu fi) 3554 d 19 Are the inlet(s) and outlet located in a manner that avoids short- circuiting? Yes 20 Are berms or baffles provided to improve the Flowpath? Yes 21 Does the office drawdown from below the top surface of the permanent I? Yes 22 Dces the wetland minimize impacts to the receiving channel from the 1- , 24-hr storm? Yes 23 Is a trash rack or other device provided to protect the outlet system? Yes Wetland 1 10:22 AM 12/20/2022 STORMWATER WETLAND Solt a w Plrmb 50 Soil amendment depth (Inches) 12 In 51 Has a soil amendment specification beenprovided? Yes 52 Has a landscaping plan that meets SW Wetland MDC (12) been Yes provided? 53 Number of plants per 200 square feet (#) in the shallow water zone: 54 toes the temporary inundation zone planting comply with SW Yes Vlettand mt)0 t1A ? 55 Are the dam structure and temporary fin slopes planted in non- Yes clumping turf rass? 56 W III rattails bo ptaMod in the wetland? No ADDMON& INFORMATION. 57 Please use IN& space to provide any additional intormetion aboul _ the stonnwalerwetland(s): o sproadstieel wouldnY let me enter values for i159, the plant numbers We added 507 plants (50 plants per 20091). Line 24 • The peak attentUatlon for Orange County 1s for the 1 year, 24hr slonm ovont. Wetland 2 10:22 AM 12/20/2022