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Home My WebLink AboutSW3190803_Supplement-EZ-123019_12/31/2019SUPPLEMENT-EZ COVER PAGE FORMS LOADED PROJECT INFORMATION 1 Project Name 2 Project Area ac 3 Coastal Wetland Area ac Salem Leasing Corporation 10.725 4 Surface Water Area ac 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 8 Will the vegetated setback remain vegetated? 9 Is BUA other that as listed in .1 0034 c-d out of the setback? 10 Is streambank stabilization proposed on this project? No NUMBER AND TYPE OF SCMs: 11 Infiltration System 0 12 Bioretention Cell 0 13 Wet Pond 1 14 Stormwater Wetland 0 15 Permeable Pavement 0 16 ISand 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 Treatment Swale 0 22 Dry Pond 0 23 Storm Filter 0 24 Silva Cell 0 25 Ba filter 0 26 Filterra 0 FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title: Matthew Grant, CEO 28 Organization: Jordan Grant & Associates, PLLC 29 Street address: 2351 Simonton Rd 30 City, State, Zip: Statesville, NC 28625 31 Phone numbers : 704-928-7919 32 Email: i mattg@Jordan-grant.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. Signature of Designer December 30. 2019 Date DRAINAGE AREAS 1 Is this a high density project? Yes 2 If so, number of drainage areas/SCMs 1 3 Is all/part of this project subject to previous rule versions? No FORMS LOADED DRAINAGE AREA INFORMATION Entire Site 1 4 Type of SCM Wet pond 1 5 Total BUA in project (sq ft 362057 sf 314751 sf 6permitting) New BUA on subdivided lots (subject to s ft 7permitting) New BUA outside of subdivided lots (subject to sf 8 Offsite - total area (sq ft 9 Offsite BUA (sq ft 10 Breakdown of new BUA outside subdivided lots: - Parking (sq ft 354,349 sf 307,033 sf - Sidewalk (sq ft 718 sf 718 sf - Roof (sq ft 7000 sf 7000 sf - Roadway s ft - Future (sq ft - Other, please specify in the comment box below (sq ft 11 New infiltrating permeable pavement on subdivided lots (sq ft 12 New infiltrating permeable pavement outside of subdivided lots (sq ft 13permitting) Exisitng BUA that will remain (not subject to s ft 14 Existing BUA that is already permitted (sq ft 15 Existing BUA that will be removed (sq ft 16 Percent BUA 79% 79% 17 Design storm inches 1 in 1 in 18 Design volume of SCM cu ft 28561 cf 28561 cf 19 Calculation method for design volume Simple Simple ADDITIONAL INFORMATION 20 Please use this space to provide any additional information about the drainage area(s): No. 5 - 47,306 sq. ft. of BUA is outside wet pond drainage area. WET POND 1 Drainage area number 1 21 Design volume of SCM (cu ft) GENERAL MDC FROM 02H .1050 , 31 Is the SCM sized to treat the SW from all surfaces at build -out? 28561 cf Fes 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 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? 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)? No 16 Does the SCM follow the device specific MDC? Yes 17 Was the SCM designed by an NC licensed professional? MDC FROM 02H .1053 Method used Yes SA/DA WET POND 181 19 Has a stage/storage table been provided in the calculations? Yes 20 Elevation of the excavated main pool depth (bottom of sediment removal) (fmsl) 895.00 21 Elevation of the main pool bottom -(top of sediment removal) (fmsl) 896.00 22 Elevation of the bottom of the vegetated shelf (fmsl) 899.00 23 Elevation of the permanent pool (fmsl) 899.50 24 Elevation of the top of the vegetated shelf (fmsl) 900.00 25 Elevation of the temporary pool (fmsl) 900.50 26 Surface area of the main permanent pool (square feet) 9494 27 Volume of the main permanent pool (cubic feet) 24804 cf 28 Average depth of the main pool (feet) 3.00 ft 29 Average depth equation used Equation 2 30 If using equation 3, main pool perimeter (feet) 31 If using equation 3, width of submerged veg. shelf (feet) 32 Volume of the forebay (cubic feet) 3757 cf 33 Is this 15-20% of the volume in the main pool? Yes 34 Clean -out depth for forebay (inches) 12 in 35 Design volume of SCM (cu ft) 9764 cf 36 Is the outlet an orifice or a weir? Orifice 37 If orifice, orifice diameter (inches) 1.25 in 38 If weir, weir height (inches) 39 If weir, weir length (inches) 40 Drawdown time for the temporary pool (days) 2.77 41 Are the inlet(s) and outlet located in a manner that avoids short- circuiting? Yes 42 Are berms or baffles provided to improve the flow path? No 43 Depth of forebay at entrance (inches) 36 in 44 Depth of forebay at exit (inches) 24 in 45 Does 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 48 Does the orifice drawdown from below the top surface of the permanent pool? Yes 49 Does the pond minimize impacts to the receiving channel from the 1- yr, 24-hr storm? Yes 50 Are fountains proposed? (If Y, please provide documentation that MDC(9) is met.) No 51 Is a trash rack or other device provided to protect the outlet system? Yes 52 Are the dam and embankment planted in non -clumping turf grass? Yes 531 Species of turf that will be used on the dam and embankment (Festuca rubra) b4l Has a planting plan been provided for the vegetated shelf? Yes ADDITIONAL INFORMATION 55 Please use this space to provide any additional information about the wet pond(s):