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Home My WebLink AboutSW6240903_Supplement-EZ Form_20241002 SUPPLEMENT-EZ COVER PAGE FORMS LOADED 1 Project Name E 42 Mini Storage 2 Pro' Area ac 11.92 3 Coastal Wetland Area(act_—_— 0 4 Surface Water Area ac 0 5 Is this project Hiihor Low Density? ( High 6 Does this project use an off-site SCM? No 7 Width o vegetated getated setbacks �N/A 8 !Wig the vegetated setback remain vegetated? NIA 9 If BUA is proposed in the setback,does it meet NCAC 02H.1003(4)(c-d)? N/A t 10 a lls strembank stabilization proposed on this project? No N1" --A D TYPE OF SCMs: " 11 I!ygt anon System 12 Bioretention Cell- 13 Wet Pond t 14 Storrrnnater Wetland a _ 15 Permeable Pavement 16 ;Sand Filter 17 Rainwater Harvestm��RWH�_ f 18 Green Roof i 19 Level Spreader-Filter Strip LDS-FS) 20 Disconnected Impervious Surface DIS 21 Treatment Swale I' 22 1Dry Pond 23 lStormFilter 24 Sfiva Cell 25 Bayfilter 26 Fi fterra --. FORMS LOADED -DESIGNER CERTIFICATION 27 Name and Title: Fleet Temple,PE� 28 Organization: 3 Fleet Temple Engineering,PLLC 29 Street address: I 5245 Red Hill Church Rd 30 City,State,Zip: Coats,NC 27521 31 Phone number(s): — 910-658-2446 32 Email. fleet@ftempleengineering.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 Cll/�� A E —. Signature of Designer 441 INS Seal Date INFILTRATION SYSTEM 2 _�D iage area number _ 1 iMinimurn required treatment volume(cu ft) 10926 cf 3 Ile the SCM sized to treat the SW from all surfaces at build-out? ( 4 'Is the SCM_located away from contaminated soils? - Yes r 5 1What are the side slopes of the SCM(H:V or enter"VerlicaP for 1 trenches)? 3:1 __-_- 6 Does the SCM have retaining walls,gabion walls or other engineered side slopes? No L107 Are the inlets,outlets,and receiving stream protected from erosion iiYes Is there an overflow or bypass for inflow volume in excess of the d • n volume? Yes What is the method for dewatering the SCM for maintenance? Pump(preferred) 'if applicable,will the SCM be cleaned out after construction? j 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)? e N/A 14 i 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)? iYes 16 Does the SCM follow the device specific MDC? -- I Yes 17 Was the SCM de*nend by an NC licensed professional? Yea sysrt� to�+l Iasi 18 'Proposed slope of the subgrade surface 0% 19 Are terraces or baffles provided? No 20 - Type of pretreatment_ _--— — ®— -- __-- Other 21 Was the soil investigated in the footprint and at the elevation of the infiltrations em? Yes 22 SHWT elevation(fmsl) 434.00 23 Depth to SHWT per soils report(in) 72 00 24 Ground elevation at boring in soils_ report(fmsl) 440.00 25 Is a detailed hydrogeologic study attached if the separation is :between 1 and 2 feet? N/A (28 !Soil infiltration rate n/hr) — 0.87 min 27 Factor of safety(FS) (2 is recommended): 2 00 �arrnri�Orts 29 'Bottom elevation(fms)) 436ft 30 Storage elevation(fmsl) 438.It 31 'Bypass elevation(fmsl) 438 ft For Basins Only 32 Bottom surface area(ft) 7383 ft 33 `Storage elevation surface area(ft) 9798.ft ea Only 34 Length(ft) _ f 35 36 iPerforated pipe diameter,if applicable(inches) — 37 Number of laterals t 38 Total length of perforated piping 39 Stone type.if applicable 40 Stone-porosity(%) I _ _ 41 Is stone free of fines? 42 'Is the stone wrapped in geotextile fabric? i T 43 Has at least one inspection port been provided? --..._._ [Vo1umes;1Drswdc,vvn -- - 44 Design volume of SCM(cu ft) 17181 cf 45 Time to draw down(hours) 64 his 46 Please use this space to provide any additional information about the iin ilcation s ems Infiltration 3 7:42 PM 7/29/2024 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 densWyt areas? No 4- If so,number of low densitydrainage areas 0 Is a vpart of this project subject to previous rule 5 versions? No FORMS LOADED DRAINAGE AREA INFORMATION Entire Site 1 2 4�Type of SCM Infiltration Basin Wet Pond 5 Total drainage area ft 179745 367241 ( 6 Onsite drainage area ft 156029 362885 1:8 7 Offske drainageare�sq ft) 23716 4356 ITotal BUA in protect(sq� 88127 sf 195105 sf ii New BUA on subdivided lots(subject to permitting) --- �- - 9 1 ft a 88127 sf 195105 sf ,New BUA not on subdivided lots(suii-�tc 10 rmitfi )(so sf sf 11 Off BUA(sq ft) _ sf _--- sf 12 3 Breakdown of new BUA not on subdivided lots: -Parking ft _ --- - -_ -Sidewalk ft -Roof(sq -RoadwaY�s9 ft) _.. -Future(sq ft) e -Other,please specify in the comment box below New infiltrating permeable pavement on g 13 subdivided lots(sq-ftl_ 'New infiltrating permeable pavement not on - 14 subdivided lots ft k �Existing BUA that will remain(not subject to � 16 Existing BUA that is already permitted(sq 17 Existing BUA that will be removpdAsgftL___ 18 Percent BUA 4996 53% 19 !Des' n storm inches) _ 1.0 in 1.0 in 20 [Design volume of SCM(cu ft) 10926 cf 18731 cf ----- _ ------ __. -. 21 Cakwlation method for design volume4 Simple Method Simple Method TONAL]INFORMATION Please use this space to provide any additional information about the 3 22 drainage area(s): ,new BUA Jrx"es all asphaftwiel1building area WET FUND 1 Drainage area_number 2 2 Minimum required treatment volume(cu ft) 18731 cf 3 Is the SCM sized to treat the SW from all surfaces at built-out? Yes 4 Is the SCM located away from contaminated soils? Yes f 5 What are the side slopes of the SCM(H:V)? 31 6 Does the SCM have retaining walls,gabion walls or other engineered No side slopes? 7 Are the inlets,outlets,and receiving stream protected from erosion Yes 107year storm)? —_ ---_-_ L11 Is there an overflow or bypass for inflow volume in excess of the Yes design volume? -- Does the maintenance access comply with General MDC(8)F YesWhat is the method for dewatering the SCM for maintenance? Pump(preferred)If icable,will the SCM be cleaned out after construction? 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 N/A 13 Gen M eral DC 10? 14 Is there an O&M Agreement that complies with General MDC(11)? Yes 151s there an O&M Plan that complies with General MDC(12)? _ Yes k 16 Does the SCM follow the device specific MDC? Yes 17 Was the SCM designed an NC licensed professional? Yes 18 Sizing method used HRT f 19 Has a stage/storage table been provided in the calculations? Yes 20 Elevation of the excavated main pod depth(bottom of sediment �- 423.00 rernova—D(f. — —r 21 Elevation of the main pool bottom(top of sediment removaq(fmsl) 424.00 H 22 Elevation of the bottom of the meted shelf fins 428.50 23 Elevation of the permanent pool(fmsq— — 429.00 24 Elevation of—the lip of the vegetated shell(fist) ! 429.50 25 Elevation of the temporary pool(f r" 430.00 A 26 Surface area of the main permarteM pool(square feet) 15039 27 Volume of the main permanent pool(cubic feet) 51855 cf _ t 28jAv pltt of the main pool(feat) -- 3.20 ft _de 29 depth equation used -- --------T Equation 2 - 30 If using equat'an 3,meat pool perimeter(feet) _ 31 If using equation 3,width of submerged veg.sl (feet) _ --32 Volume ofthe forebay(cubic feet) 10427 d 33 Is this 15-20%of the volume in the main pool? v� Yes 34,Chn out depth for forebay(inches) 12 in 35 Design volume of SCM(cu ft) 22915 cf 36;Is the outlet an orifice or a weir? Orifice 37 If orifice,orifice diameter(inches) 2 in 38If weir,weir height(inches) 39 If weir,weir 40 Drawdown time for the temporary pool(days)— — ---.L 4.5 _ s)and outlet located in a manner that avoids short- Yes 41 Are the inlet ?_ 42 Are berms or baffles provided to improve the flaw pact? No 43 Depth of forebay at entrance(inches) ; 48 in 44EDepth of forebay at exit(inches) 36 in 45 s water flow out of the forebay in a non erosive manner? Yes 46 Width of the vegetated shelf(feet) 6 ft — 47 Slope of vegetated shelf(H:V) --- 6:1 Does the orifice drawdown from below the top surface of the48 Yes rmanent wool? 49 as the pond minimize impacts to the receiving channel from the 1- Yes .24-hr storm? . Are fountains proposed?(if Y.please provide documentation that No �iM_-9)is met.) 51 Is a trash rack or other device provided to protect the outlet system? Yes 5221Are the dam and embankment planted in non-clumping turf grass? Yes 53 Species of turf that will be used on the dam and embankment bermuda 54 Has a planting plan been provided for the vegetated shelf? Yes ADDITIONAL INFORMATION Please use this space to provide any additional information about the 551 wet pond(s): t ) Wet Pond 4 7:42 PM 7/29/2024