1215 Long Ferry Road - Project Kodiak - SuppEZ_2018_Signed

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1
1 Project Name
Project Area ac
Coastal Wetland Area ac
Surface Water Area ac
Is this project High or Low Density?
PROJECT KODIAK
78.86
N/A
N/A
High
2
3
4
5
6
Does this project use an off -site SCM?
No
COMPLIANCE WITH 02H .1003(
7 Width of vegetated setbacks provided feet
n/a
8
Will the vegetated setback remain vegetated?
Yes
9
Is BUA other that as listed in .1 0034 c-d out of the setback?
No
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
0
14
Stormwater Wetland
0
15
Permeable Pavement
0
16
Sand Filter
1
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
StormFilter
0
24
Silva Cell
0
25
Ba filter
0
26
Filterra
0
FORMS LOADED
SIGNER CERTIFICATION
27
Name and Title:
R. Blake Day, P.E. - Project Engineer
28
Or anization:
Kimle -Hom
29
Street address:
200 South Tryon Street, Suite 200
30
City, State, Zip:
Charlotte, NC 28202
31
Phone numbers :
704-319-5691
32
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.
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Signature of Designer
5/13/2019
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
SandFilter
SandFilter
5
Total BUA in project (sq ft
1480626 sf
1480626 sf
6permitting)
New BUA on subdivided lots (subject to
s ft
n/a
n/a
7permitting)
New BUA outside of subdivided lots (subject to
s
JOffsite -total area (sq ft)
Offsite BUA (sq ft)
n/a
n/a
8
n/a
n/a
9
n/a
n/a
10
Breakdown of new BUA outside subdivided lots:
-Parking s ft
669147 sf
669147 sf
- Sidewalk (sq ft
6435 sf
6435 sf
- Roof (sq ft
690000 sf
690000 sf
- Roadway s ft
sf
sf
- Future (sq ft
109000 sf
109000 sf
- Other, please specify in the comment box
below (sq ft)
29072 sf
29072 sf
11
New infiltrating permeable pavement on
subdivided lots (sq ft
sf
sf
12
New infiltrating permeable pavement outside of
Isubdivided lots (sq ft)
sf
sf
13permitting)
Exisitng BUA that will remain (not subject to
s ft
sf
sf
14
Existing BUA that is already permitted (sq ft
sf
sf
15
Existing BUA that will be removed (sq ft
sf
sf
16
Percent BUA
39%
70%
17
Design storm inches
1"
1"
18
Desi n volume of SCM cu ft
29967 cf
29967 cf
19
Calculation method for design volume
Simple
Simple
DDITIONAL INFORMATION
Please use this space to provide any additional information about the
20 drainage area(s):
Other impervious areas include gravel edging for trailer parking and sheet
flow dissipation.
DRAINAGE AREA INFORMATION
Entire Site
1
4
Type of SCM
N/A
Sand Filter
5
Total BUA from project (sq ft)
6
1995 rules
SL 2006-246
2008 rules
2017 rules
1480626 sf
7
New BUA on subdivided lots (subject to
permitting) (sq ft)
1995 rules
SL 2006-246
2008 rules
2017 rules
n/a
8
New BUA outside of subdivided lots (subject
to permitting) (sf)
1995 rules
SL 2006-246
2008 rules

2017 rules
9
Offsite - total area (sq ft)
1995 rules
SL 2006-246
2008 rules
2017 rules
10
Offsite BUA (sq ft)
1995 rules
SL 2006-246
2008 rules
2017 rules
11
Design storm (inches)
1995 rules
SL 2006-246
2008 rules
2017 rules
1"
12
Breakdown of new BUA:
- Parking (sq ft
669147 sf
- Sidewalk (sq ft
6435 sf
- Roof (sq ft
690000 sf
- Roadway s ft
- Future (sq ft
109000 sf
- Other, please specify in the comment box
below (sq ft
29072 sf
13
New infiltrating permeable pavement on
subdivided lots (sq ft
14
New infiltrating permeable pavement outside of
subdivided lots (sq ft)
15permitting)
Exisitng BUA that will remain (not subject to
s ft
sf
16
Existing BUA that is already permitted (sq ft
sf
17
Existina BUA that will be removed (sq ft
sf
18
Percent BUA
70%
19
Design volume of SCM cu ft
29967 cf
20
lCalculation method for design volume
Simple
DDITIONAL INFORMATION
21
Please use this space to provide any additional
information about the drainage area(s):
Other impervious areas include Gravel areas

SAND FILTER
18
SHWT elevation (fmsl)
628
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?
No
Sediment Chamber
23
Volume that can be retained in the sediment chamber (cubic feet)
243564 cf
24
Will there be a permanent pool in the sediment chamber?
Yes
25
Bottom of the sediment chamber (fmsl)
633.00
26
Area of the sediment chamber (square feet)
50688 sf
27
Physical depth of the sediment chamber (inches)
84 in
28
Ponding depth in the sediment chamber, above any permanent pool
(inches)
36 in
29
Elevation of top of weir between chambers (fmsl)
637
Sand Chamber
30
Volume that can be retained in the sand chamber (cubic feet) 89902 cf
Bottom of the sand chamber (fmsl) 635.50
Area of the sand chamber (square feet) 30500 sf
31
32
33
Physical depth of the sand chamber (inches)
36 in
34
Ponding depth in the sand chamber, above any permanent pool
(inches)
36 in
35
Elevation of the bypass device (fmsl)
638.5
36
Type of bypass device
Permanent Control
Structure
37
Mechanism for distributing flow over the sand surface
Rock Berm
38
Sand specification for sand chamber
ASTM C33
39
Depth above underdrain pipe (inches)
Will the media be maintained to drain at least two inches per hour at
the sand surface?
6 in
40
41
Is at least one clean -out pipe provided at the low point of each
underdrain line?
LL
42
i clean -out pipes a capped?
RONAL INFORMATION
IIriease use mis space To proviae any aaanionai inTormauon aoouT me I
43 Sand Filter(s):
The proposed sediment basin will be converted to a sand filter
following stabilization of the upstream areas. To limit earthwork the
proposed sediment chamber is proposed to have a permanent pool
elevation.
Sand Filter 4 10:16 AM 5/3/2019