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Home My WebLink AboutSW5190902_Supplement-EZ Form_20191114SUPPLEMENT-EZ COVER PAGE FORMS LOADED �_r — — PROJECTINFORMATION 1 Project Name Captive Aire Systems Expansion 2 Project Area aC 6.85 3 Coastal Wetland Area ac 0 4 _ Surface Water Area ac 0 5 1 Is this project High or Low Density? High 6 1 Does this project use an off -site SCNI? No COMPLIAN_C_E WITH 02H .1003(4) 7 Width of vegetated setbacks provided feet �T 10 8 1 Will the vegetated setback remain vegetated? Yes 9 Is BUA other that as listed in .1 003(4)(c-d) out of the setback? I No _ E 10 I Is streambank stabilization proposed on this proiect? No NUMBER AND TYPE OF SCMs: _ 11 Infiltration System 0 12 Bioretention Call 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 ITreatment Swale 0 22 Dry Pond 0 23 StormFilter 0 24 Silva Cell 0 25 Ba filter 0 26 Filterra 0 FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title: J, Michael Stocks, PE 28 Organization: Stocks Engineering 29 Street address: 801 E Washington St. 30 City, State, zip: Nashville, NO 27856 31 Phone numbers : 252-459-8196 32 1 Email: mstocks@stocksengineering.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 bast 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. r Signal a of esIgner LV r ' q_ Date f DRAINAGE AREAS 1 Is this a high density project? Yes 2 If so, number of drainage areaslSCMs 1 3 Is 9111parl. of this project subject to previous rule versions? No FORMS LOADED _DRAINAGE AREA INFORMATION Entire site 1 4 Tye of SCM Wetland J�� Welland 5 Total BUA in project (sq ft 123710 sf 123710 sf 6 New BUA on subdivided lots (subject to permitting) (sq ft 123710 sf 123710 sf 7permitting) New BUA outside of subdivided lots (subject to s sf sf 8 Mile - total area (sq ft sf 1I sf 9 Offsite BUA (sq ft sf sf 10 Breakdown of new BUA outside subdivided lots: T Parking (sq ft 51530 sf 51530 sf - Sidewalk (sq ft 180 sf � 180 sf Poof (sq ft 72000 sf N 72000 sf Roadway s ft sf sf - Future (sq ft _ sf sf - Other, please specify in the comment box below(sq.it sf sf 11 New infiltrating permeable pavement on subdivided lots (sq ft sf _ sf 12 —F- New infiltrating permeable pavement outside of subdivided lots (sq ft sf sf 13permitting) Exisiing BUA that will remain (not subject to (sq ft 70132 sf sf 14 Existing BUA that Is already permitted (sq ft _ sf sf 15 Existing BUA that will be removed (sq fl sf sf 16 Percent BUA 65% 64% 17 Design storm inches 1 in 1 in 18 Design volume of SCM cu ft 12019 of 12019 cf i9 _ Calculation method for design volume Simple ADDITIONAL INFORMATION _ Simple 20 Please use this space to provide any additional information about the drainage area(s): STORMWATER WETLAND 1 Drainage area number 1 2 Design volume of SCM (cu it) GENERAL MDC FROM 02H .1050 3 Is the SCM sized to treat the SW from all surfaces at build -out? 12019 cf Yes 4 Is the SCM located away from contaminated soils? Yes 5 What are the side slopes of the SCM (HAO? :1 6 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-year storm)? Yes 8 Is there an overflow or bypass for inflow volume in excess of the design volume? Yes 9 What Is the method for dewatering the SCM for maintenance?1 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)? Yes 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 CTnRMWATFR Was the SCM designed by an NC licensed professional? WFTI atilt MnC FRnM 02H _1054 Yes 18 Are the inlet(s) and outet located in a manner that avoids short-circuiting? Yes 19 Are berms or baffles provided to improve the flow path? Yes 20 Does the orifice drawdown from below the top surface of the permanent pool? No 21 Does the wetland minimize impacts to the receiving channel from the 1-yr, 24-hr storm? Yes 22 1 Is a trash rack or other device provided to protect the outlet system? Yes lElevatlons 23 24 25 26 27 28 29 Elevation, peak attenuation above temporary pool (if applicable) (fmsi) 439.25 Elevation, temporary pool (lop of the temporary Inundation zone) (fmsl) 439.25 Elevation, permanent pool (top of the shallow water zone) (fmsl) 438.00 Elevation, bottom of shallow water zone (fmsl) 437.50 Elevation, bottom of forebay deep pool all deepest point (at forebay entrance) (fmsl) 435.00 Elevation, bottom of forebay deep pool at shallowest point (al forebay exit) (fmsl) 435.50 Elevation, bottom of non-forebay deep pool at deepest point (fmsl) 435.00 30 Area, total surface area of the SW wetland at temporary pool elev. (sq It) 11,071.00 31 Area, temporary inundation zone at temporary pool elev. (sq ft) 3,546.00 32 Area, shallow water zone at temporary pool elov. (sq ft) 4,448.00 33 Area, forebay at femparary pool elev. (sq ft 1,524.00 34 Area, non-forebay deep pool at temporary pool elev .(sq ft 1.553.00 35 Percent area provided, temporary inundation zone (should be 30-45% 32% 36 Percent area provided, shallow water zone should be 35-45% 4G% 37 Percent area provided, deep pool (forebay) should be 10-15% 14% 38 1 Percent area provided, deep pool non-foteba should be 5-15% 14% Depths and outfet 39 40 41 45 46 47 48 Peak attenuation depth above temporary inundation zone (inches) 15 in Temporary inundation zone depth temporary pool 10 permanent pool inches 15 in Shallow water zone depth(permanent pool 10 bottom of wetland (inches) 6 in Depth, forebay at entrance (permanent pool to bottom offorebay entrance) inches 36 In Depth, roiebay at exit (permanent pool to bottom of forebay exit) ((inches) 6 in Depth, non-forebay dee oats armament pool to deep oo] bottom inches 36 in If there is an orifice, diameter inches 2 in If there is a weir, weir height (inches) in If there is a weir, weir length inches in Drawdown time for the temporary pool (days) 2.3 Soft and Plants 49 Soil amendment depth (inches) 50 Has a soil amendment specification been provided? No 51 Has a landscaping plan that meets SW Wetland MDC (12) been provided? Yes 52 Number of plants per 200 square feet (#) in the shallow water zone: Does the temporary inundation zone planting comply with SW Welland MDC 53 (14)? Yes 54 Are the dam structure and temporary fill slopes planted in non -clumping turfgrass? No 55 Will catlaiis be planted fn the wetland? No ADDITIONAL INFORMATION Please use ([its space to provide any additional information about the stormwater 56 welland(s): Wetland 1 2:05 PM 11/14/2019