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Home My WebLink AboutSW6220302_Supplement-EZ Form_20220812SUPPLEMENT-EZ COVER PAGE FORD PROJECT INFORMATION 1 Project Name Gruber Mini Matt 2 Project Area ac 5.06 3 Coastal Wetland Area ac High_ 4 Surface Water Area ac 5 Is this project High or Low Density? 6 Does this project use an off -site SCM? No COMPLIANCE WITH 02H .1003(4) 7 Width of vegetated setbacks provided feet 0 8 Will the vegetated setback remain vegetated? N/A 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 1 12 Bioretention Cell 13 Wet Pond 14 Stormwater Wetland 15 Permeable Pavement 16 Sand Filter 17 lRainwater Harvesting RWH 18 Green Roof 19 Level Spreader -Filter Stri LS-FS 20 Disconnected Impervious Surface DIS 21 Treatment Swale 22 Dry Pond 23 lStormFilter 24 Silva Cell 25 113ayfilter 26 1 Filterra FORMS LOAM DESIGNER CERTIFICATION 27 Name and Title: Howard Resnik PE 28 Organization: Calibre Engineering 29 Street address: PO BOX 4041 30 City, State, Zip: Wimin ton NC 28406 910-791-4441 31 Phone numbers : Email: T 32 howard@calibre-engineering.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 `\`N„CARO� O; FESS/�'•loe iL SEAL i '� 025483 ' Seal 111,11S 11,tS . 1%0\\` 49- ZZ X Date DRAINAGE AREAS 1 Is this a high density project? Yes 2 If so, number of drainage areas/SCMs 1 3 Does this oroiect have low densit areas? No 4 If so number of low 4-ify 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 Infiltration Basin 5 Total drainage area (sq ft 220340 164291 6 Onsite drainage area (sq ft 164291 7 Offsite drainage area (sq ft 0 8 Total BUA in project (sq ft 142746 sf 128786 sf 9permitting) New BUA on subdivided lots (subject to s ft 10 New BUA not on subdivided lots (subject to permitting) (sf) 128786 sf 11 Offsite BUA (sq ft 12 Breakdown of new BUA not on subdivided lots: - Parking (sq ft 106765 sf 103744 sf - Sidewalk (sq ft 10701 sf 9548 sf - Roof (sq ft 15494 sf 15494 sf - Roadway s ft 4369 sf - 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 5417 sf 16 lExistina BUA that is already permitted (sq ft 17 Existing BUA that will be removed (sq ft 701 sf 18 Percent BUA 64 0 78.4 19 IDesign storm inches 1.0 in 1.0 in 20 IDesign volume of SCM cu ft 13553 cf 13553 cf 21 lCalculation method for design volume Simple ADDITIONAL INFORMATION Please use this space to provide any additional information about the 22 drainage area(s): Simple INFILTRATION SYSTEM 1 IlDrainage area number 1 1 2 IMinimum required treatment volume (cu ft) 10401 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 or enter "Vertical' for trenches)? 3:1 6 Does the SCM have retaining walls, gabion walls or other engineered side slopes? Yes 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 desi n volume? Yes 9 lWhat 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 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 licensedprofessional? Yes umnu rwi wry 3T3 nrvi rvw%- rrtvrvi ucn .ivai 18 JProposed slope of the subgrade surface (%) 0% 19 JAre terraces or baffles provided? No 20 IType of pretreatment: Forebay Soils Data 21 Was the soil investigated in the footprint and at the elevation of the infiltrations stem? Yes 22 SHWT elevation (fmsl) 382.90 23 Depth to SHWT per soils report (in) 125.00 24 Ground elevation at boring in soils report (fmsl) 393.30 25 Is a detailed hydrogeologic study attached if the separation is between 1 and 2 feet? No 26 JSoil infiltration rate (in/hr) 0.99 27 IFactor of safety (FS) (2 is recommended): 2.00 Elevations 29 lBottom elevation (fmsl) 386 ft 30 IStorage elevation (fmsl) 388.5 ft 31 JBypass elevation (fmsl) 388.5 Basins 32 JBottom surface area if 4858 ft 33 Istorage elevation surface area(ft) 5887. ft For Trenches Only 34 Length (ft) 35 Width (ft) 36 Perforated pipe diameter, if applicable (inches) 37 Number of laterals 38 Total length of perforated piping 39 Stone type, if applicable 40 Stone porosity (%) 41 Is stone free of fines? 42 Is the stone wrapped in geotextile fabric? 43 Has at least one inspection port been provided? Volumes/Drawdown 44 IDesign volume of SCM (cu ft) 13553 cf 45 ITime to draw down (hours) 67.6 I 46 IPlease use this space to provide any additional information about I the infiltration system(s): 12,14&15 - Project is located at Ft. Bragg - Standard documents are not red forthis proiect. Infiltration 3 10:30 AM 8/11/2022