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Home My WebLink AboutSW3240701_Supplement-EZ Form_20240724 SUPPLEMENT-EZ COVER PAGE FORMS LOADED PROJECT INFORMATION 1 'Project Name QuikTrip#1069 2 Project Area(ac) 3.33 3 Coastal Wetland Area(ac) N/A 4 Surface Water Area(ac) N/A 5 Is this project High or Low Density? High 6 Does this project use an off-site SCM? No COMPLIANCE WITH 02H.1003(4) 7 Width of vegetated setbacks provided(feet) _ 20 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 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 1 23 StormFilter 1 24 Silva Cell 25 Bayfilter 26 Filterra FORMS LOADED DESIGNER CERTIFICATION 27 'Name and Title: Duane Ensor,P.E. 28 Organization: Freeland&Kauffman,Inc. 29 Street address: 209 West Stone Avenue 30 City,State,Zip: Greenville,SC 29609 31 Phone number(s): 864-672-3439 32 Email: densor@fk-inc.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. Designer 0111111/4 Signature of Designer NO. 047666 4• i� •N� I NEE. • Seal Date DRAINAGE AREAS 1 Is this a high density project? Yes 2 If so,number of drainage areas/SCMs 2 3 Does this project 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 LOADED DRAINAGE AREA INFORMATION Entire Site 1 2 Underground/Dry 4 Type of SCM Pond&WQU - 5 Total drainage area(sq ft) 153,007 126914 26093 6 Onsite drainage area(sq ft) 139,408 _ 126568 12840 7 Offsite drainage area(sq ft) 13,599 _ 346 13253 8 Total BUA in project(sq ft) 104205 sf _ 93864 sf 10341 sf New BUA on subdivided lots(subject to permitting) 9 (sq ft) - -New BUA not on subdivided lots(subject to 10 permitting)(sf) 104205 sf _ 93864 sf 10341 sf 11 Offsite BUA(sq ft) 5819 sf 346 sf 5473 sf 12 Breakdown of new BUA not on subdivided lots: -Parking(sq ft) 8746 sf _ 8746 sf sf -Sidewalk(sq ft) 1961 sf 1149 sf 812 sf -Roof(sq ft) 15154 sf 15154 sf sf -Roadway(sq ft) 71429 sf _ 67461 sf 3968 sf -Future(sq ft)-Other,please specify in the comment box below (sq ft) 89sf - 89sf New infiltrating permeable pavement on subdivided 13 lots(sq ft) - -New infiltrating permeable pavement not on 14 subdivided lots(sq ft) - - - Existing BUA that will remain(not subject to 15 permitting)(sq ft) - - - 16 Existing BUA that is already permitted(sq ft) 52707 sf 32234 sf 20473 sf 17 Existing BUA that will be removed(sq ft) 52707 sf 32234 sf 20473 sf 18 Percent BUA 68% 74% 40% 19 Design storm(inches) 1.0 in 20 Design volume of SCM(cu ft) - 7192 cf - 21 Calculation method for design volume Simple Method ADDITIONAL INFORMATION Please use this space to provide any additional information about the 22 drainage area(s): DRY POND I Drainage area number 1 2 Minimum required treatment volume(cu ft) 7192 cf GENERAL MDC FROM 02H.1050 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 slopes of the SCM(H:V)? 3:1 6 Does the SCM have retaining walls,gabion walls or other engineered I No side slopes? 7 Are the inlets,outlets,and receiving stream protected from erosion Yes (10-year storm)? 8 Is there an overflow or bypass for inflow volume in excess of the Yes design volume? 9 What is the method for dewatering the SCM for maintenance? Pump(preferred) 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 N/A General MDC(10)? 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 Does the SCM follow the device specific MDC? Yes 17 Was the SCM designed by an NC licensed professional? Yes DRY POND MDC FROM 02H.1062 18 SHWT elevation (fmsl) Not found when boring drilled to 10' 19 Elevation of the bottom of the dry pond(fmsl) 534.5 20 Distance from bottom to SHWT(feet) N/A 21 Elevation of the temporary pool during the design storm(feet) 727.25 ft 22 Ponding depth of the design storm(feet) 1.25 ft 23 Will the dry pond be uniformly graded to flow toward the outlet? Yes 24 Is a low flow channel being provided? No 25 Are the inlet(s)and outlet located in a manner that avoids short- Yes circuiting? 26 Will berms or baffles be provided to increase the flow path? Yes 27 What method of pretreatment will be provided? N/A 28 Design volume of SCM(cu ft) 7192 29 Diameter of drawdown orifice(in) 1 in 30 Drawdown time for the temporary pool(hours) 51 31 Does the pond minimize impacts to the receiving channel from the 1- Yes yr,24-hr storm? 32 Is there a small permanent pool near the orifice to prevent clogging? No 33 Will the outlet be designed to prevent clogging? Yes 34 Are the dam and embankment planted in non-clumping turf grass? Yes 35 Species of turf that will be used on the dam and embankment Bermuda 36 Will trees and shrubs be prevented from growing on the dam and Yes embankment? 'ADDITIONAL INFORMATION 37 Please use this space to provide any additional information about the dry pond(s): Dry Pond 3 11:25 AM 6/10/2024 STORM FILTER 1 Drainage area number 1 2 Minimum required treatment volume(cu ft) 7129 cf GENERAL MDC FROM 02H.1050 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 slopes of the SCM (H:V)? N/A 6 Does the SCM have retaining walls, gabion walls or other engineered N/A side slopes? 7 Are the inlets, outlets,and receiving stream protected from erosion Yes (10-year storm)? 8 Is there an overflow or bypass for inflow volume in excess of the Yes design volume? 9 What is the method for dewatering the SCM for maintenance? Yes 10 If applicable,will the SCM be cleaned out after construction? N/A 11 Does the maintenance access comply with General MDC (8)? Yes 12 Does the drainage easement comply with General MDC(9)? Yes If the SCM is on a single family lot, does(will?)the plat comply with 13 N/A General MDC(10)? 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 Does the SCM follow the device specific MDC? Yes 17 Was the SCM designed by an NC licensed professional? Yes STORMFILTER MDC FROM THE STORMWATER DESIGN MANUAL 18 Design volume from the drainage area(cubic feet) 7129 cf 19 Is an upstream closed detention used? Yes 20 Volume of the upslope closed detention system(cubic feet) 7317 cf 21 Percent of the design volume contained in the upslope closed 100% detention system (%) 22 Number of cartridges 3 23 Cartridge height(inches) 27 in Not found when boring 24 SHWT elevation (fmsl) drilled to 10' 25 Elevation of bottom of StormFilter vault(fmsl) 529.48 26 Clearance from the SHWT(feet) N/A 27 Media Flow Rate(cfs of Media Surface) .23 cfs 28 Does the system includes a sediment sump? No 29 If yes,the diameter of the sump(feet) 30 If yes,the depth of the sump(feet) 31 Time to drain the sump(hours) 32 Time to drain the StormFilter(hours) 51 hrs 33 Is an off-line flow splitting device used? No 34 Type of media used (Phosphosorb or Perlite) Fiberglass 35 Will maintenance be performed by Certified Maintenance Providers Yes per instructions? ADDITIONAL INFORMATION 36 Please use this space to provide any additional information about the StormFilter system(s):