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Home My WebLink AboutSW3190901_SIGNED_SUPPLEMENTAL_9/30/2019SUPPLEMENT-EZ COVER PAGE FORMS LOADED P T INFORMATION 1 Project Name Dollar General - Salisbury (Store #21350) 2 Pro 'ect Area ac 2.25 3 Coastal Wetland Area ac 0 4 Surface Water Area ac 0 5 Is this project High or Low Density? High 6 Does this project use an off -site SCM? L No OMPLIANCE WITH 02H .1003(4) 7 Widthofvegetated setbacks provided feet NIA 8 Will the vegetated setback remain vegetated? Yes 9 Is BUA other that as listed in .1 0034 c-d out of the setback? Yes 10 Is streambank stabilization proposed on this project? I No NUMBER AND TYPE OF SCMs: 11 Infiltration System 0 12 Bioretention Cell 0 13 Wet Pond 0 14 Stormwater Wetland 0 15 Permeable Pavement 0 16 Sand Filter 1 17 1 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 IStormFilter 0 24 Silva Cell 0 25 Ba alter. 0 26 Filterra 0 FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title: Justin Church, PE I Principal Engineer 28 Organization: BREC, P.A. 29 Street address: 126 Executive Drive, Suite 220 30 Cii , State Zi : Wilkesboro, NC 28697 31 Phone numbers : 336,844,4088 32 1 Email: justin@brec.biz 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 - \`ty111il1/!!! SEAL r 0357'36 /,T�N C. CHJ�G �. 1 I -W1 x �(7Ic,— Date 1 ! D R?,AR NACU E AREAS 1 Is this a high density ro'ect? Yes 2 If so, number of drainage areasISCMs 1 Is all/part of this project subject to previous rule 3 versions? No FORMS LOADED DRAINAGE AREA INFORMATION 4 Type of SCM Entire Site . NIA 1 Sand Filter 5 Total BUA in p ro'ect sift.) 31842 sf 30243 sf 6 New BUA on subdivided lots (subject to permitting) s ft NIA NIA 7 New BUA outside of subdivided lots (subject to permittin�c�(sf� _ 31842sf _ 30243sf 8 Offsite - total area �sq ft)�253861 sf 22125 sf_ 9 Offsite BUA (sq ft 33347 sf 420'sf 10 Breakdown of new BUA outside subdivided lots: - Parking (sq ft) _ 20927 sf.-. 19328 sf -Sidewalks ft 1815 sf 1815 sf _ _ - Roof (sq ft) 9100 sf 9100 sf RoadWRLCSS ft).,__,_ _ sf sf - Future (sq M __ sf _ sf T - Other, please specify in the comment box beIow�sg it sf sf 111 New infiltrating permeable pavement on subdivided lots (sq ft sf sf 12 New infiltrating permeable pavement outside of subdivided lots(sq ft) sf sf 13 Exisitng BUA that will remain (not subject to ermittin s ftt_ sf sf 14 Existing BUA that is already permitted s ft _ sf _ sf 15 Existinq BUA that will be removed Lsg ft _ 6508 sf _ sf 16 Percent BUA 33% 43%' 17 Design stogn lnches NIA 1 in 18 ❑esinvolume of 5CM (cu ft) NIA 2600 of 19 Calculation method for design volume NIA ADDITIONALINFORMATION V Schueler 20 Please use this space to provide any additional information about the drama a area(s): DRAINAGE AREA INFORMATION 4 T e of SCM Entire Site . NIA .1 5 Total BUA from project (sq ft)� Y1995 6 rules Y 8L 2006-246 --- 2008 rules 2017 rules 7 New BUA on subdivided lots (subject to permitting) (sq ft) _ 1995 rules Sl 2006-246_- 2008 rules 2017 rules --- 8 New BUA outside of subdivided lots (subject to permitting) (sf) 1995 rules _ SL 2006-246 2008 rules 2017 rules- 9 loffalte -total area (sq ft) 11995 rules_ SL 2006-246 �2008 rules 2017 rules_ BUA (sq ft) 1995 rules__ -- SL 2006-246 2008 rules —-- -- 2017 rules -r- 11 Design storm (inches) 1995 rules SL 2006-246 2008 rules 2017 rules 12 Breakdown of new BUA: - Parkin s — Sidewalk (sq ft) - Roofs ft T. - 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 outside of subdivided lots s ft 15 Exisitng BUA that will remain (not subject to ermittin s ft - 16 Existing BUA that Is already ermltted s ft _ 17 Existing BUA that will be romoved sq it),,,_ 18 Percent BUA 19 Desi n volume of SCilll cu ft �� _ - 20 Calculation method fordesign volume ADDITIONAL: INFORMATION Please use this space to provide any additional 121 information about the drainage area(s): SAND FILTER 18 SHWT elevation (fmsl) 800 19 Type of sand filter (open or closed) Open 20 If closed, will the filter will be pre -cast or pour -In -place? 21 If closed, top of grate elevation (fmsl) 22 Is this sand filter designed to attenuate peak flows? Yes I Sediment Chamber 23 Volume that can be retained in the sediment chamber (cubic feet) 1325 cf 24 Will there be a permanent pool in the sediment chamber? Yes 25 bottom of the sediment chamber (fmsl) 817.00 . 26 Area of the sediment chamber (square feet) 1010 sf 27 Physical depth of the sediment chamber (Inches) 24.6 in 28 Ponding depth In the sediment chamber, above any permanent pool {inches} 12.6 in 29 Elevation of top of weir between chambers (fmsl) 819.05 ISand Chamber 30 Volume that can be retained in the sand chamber {cubic feet) 1325 cf 31 Bottom of the sand chamber (fmsl) 818.00 32 Area of the sand chamber (square feet) .1000 sf 33 Physical depth of the sand chamber (inches) . 12.6 Mn 34 Ponding depth in the sand chamber, above any permanent pool (inches) 12.8 in - 35 Elevation of the bypass device (fmsl) 819.05 36 Type of bypass device orifice 37 Mechanism for distributing flow over the sand surface stone dam 38 Sand specification for sand chamber astm c33 39 Depth above underd rain pipe (inches) 12 in 40 Will fhe media be maintained to drain at least two inches per hour at the sand surface? _ Yes 41 Is at least one clean -out pipe provided at the low point of each underdrain line? Yes 42 Will clean -out pipes be capped? Yes Sand Filter 4 1105 AM 9/17/2019