3. 2018_02_02 Revised SuppEZ.pdf

SUPPLEMENT -EZ FORM COVER PAGE
Please indicate the types, quantities and locations of SCMs that will be used on this project:
Designer information for this project:
Name and Title:
Quantity
Location(s)
Infiltration System
Street address:
1318 Central Avenue, E-6
Bioretention Cell
Charlotte, NC 28205
Phone number(s):
Wet Pond
1
Middle of property
Stormwater Wetland
Permeable Pavement
Sand Filter
Rainwater Harvesting
Green Roof
Level Spreader -Filter Strip
Disconnected Impervious Surface
Treatment Swale
Dry Pond
Designer information for this project:
Name and Title:
Brian Smith, P.E.
Organization:
Urban Design Partners, LLC
Street address:
1318 Central Avenue, E-6
City, State, Zip:
Charlotte, NC 28205
Phone number(s):
704-334-3303
Email:
[e-mail]
Designer
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Applicant:
Project Name:
Waxhaw Wine
Address
Providence Road South
City / Town
Waxhaw, NC 28173
Envlronmer
Quality
Company:
Contact:
James Diehl
Mailing Address:
111 Strawpocket Lane
City, State, Zip:
Mooresville, NC 28173
Phone number(s):
704-280-5880
Email:
[e-mail]
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.
I am aware that there are significant penalties for submitting false
information including the possibility of fines and imprisonment for knowing
violations as well as a report being made to my professional board.
Cover Page 1 8:42 AM 2/2/2018

WET POND
Waxhaw Wine
THE DRAINAGE AR
1
Drainage area number
1
Break down of BUA in the drainage area (both new and existing):
Total coastal wetlands area (sq ft)
sf
Parking / driveway (sq ft)
64086 sf
Total surface water area (sq ft)
sf
Sidewalk (sq ft)
6070 sf
Total drainage area (sq ft)
195251 sf
Roof (sq ft)
11330 sf
BUA associated with existing development (sq ft)
85486 sf
Roadway (sq ft)
Proposed new BUA (sq ft)
85486 sf
Other, please specify in the comment box below (sq ft)
4000 sf
Percent BUA of drainage area 144%
ITotal BUA (sq ft)
85486 sf
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
Stormwater program(s) that apply (please specify):
Design rainfall depth (in)
1.0 in
n/a
Minimum volume required (cu ft)
7225 cf
Design volume of SCM (cu ft)
7225 cf
GENERAL MDC FROM 02H.1050
#1 Is the SCM sized to treat the SW from all surfaces at build -out?
Yes
#7 If applicable, with the SCM be cleaned out after construction?
Yes
#2 Is the SCM located on or near contaminated soils?
No
#8 Does the mainetenance access comply with General MDC (8)?
Yes
#3 What are the side slopes of the SCM (H:V)?
3:1
#9 Does the drainage easement comply with General MDC (9)?
Yes
#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes?
No
#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?
No
#4 Are the inlets, outlets, and receiving stream protected from erosion (10 -year storm)?
Yes
#11 Is there an O&M Agreement that complies with General MDC (11)?
Yes
#5 Is there a a bypass for flows in excess of the design flow?
Yes
#12 Is there an O&M Plan that complies with General MDC (12)?
Yes I
#6 What is the method for dewatering the SCM for maintenance?
Drawdown Orifice
1#13 Was the SCM designed by an NC licensed professional?
Yes
WET POND MDC FROM 02H.1053
#1 Method used
SAIDA
#6 Width of the vegetated shelf (feet)
6 It
#1 Surface area of the main permanent pool (square feet)
10519 sf
#6 Location of vegetated shelf
@ Normal Pool
#1 Volume of the main permanent pool (cubic feet)
30473 cf
#6 Elevation of top of shelf (fmsl)
505.5 ft
#2 Average depth of the main pool (feet)
3 ft
#6 Elevation of bottom of shelf (fmsl)
504.5 ft
#2 Was the vegetated shelf included in the calculation of average depth?
No
#6 Slope of vegetated shelf (H:V)
6:1
#2 Elevation of the bottom of the permanent pool (fmsl)
501 ft
#7 Diameter of drawdown orifice (inches)
1.5 in
#2 Elevation of the top of the permanent pool (fmsl)
505 ft
#7 Drawdown time for the temporary pool (hours)
48 hrs
#2 Elevation of the top of the temporary pool (fmsl)
505 ft
#7 Does the orifice drawdown from below the top surface of the permanent pool?
Yes
#3 Depth provided for sediment storage (inches)
12 in
#8 Does the pond minimize impacts to the receiving channel from the 1 -yr, 24 -hr storm?
Yes
#4 Are the inlet(s) and outlet located in a manner that avoids short-circuiting?
Yes
#9 Are fountains proposed?
No
#4 Describe any measures, such as berms or baffles, that will be taken to improve the flow path:
#9 If yes, is documentation provided per Wet Pond MDC (9)?
Forebay berm
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
6095
#11 Are the dam and embankment planted in non -clumping turf grass?
Yes
#5 Is this 15-20% of the volume in the main pool?
Yes
#11 Species of turf that will be used on the dam and embankment
TBD
#5 Depth of forebay at entrance (inches)
36 in
#11 Describe the planting plan for the vegetated shelf:
#5 Depth of forebay at exit (inches)
#5 Does water flow out of the forebay in a non-erosive manner?
#5 Clean-out depth for forebay (inches)
#5 Will the forebay be cleaned out when the depth is reduced to less than the above?
36 in
Yes
12 in
Yes
Wet pond planting plan included with submittal
ADDITIONAL INFORMATION
Please use this space to provide any additional information about this wet pond that you think is relevant to the review:
'Other impervious accounts for future building expansion on site; The wet pond is designed to be larger than necessary to serve as an amenity/site feature
Wet Pond 2 8:42 AM 2/2/2018