SW3190506_Supplement EZ Form_20190701

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 jProject Name
this project use an of( site SCM7
COMPLIANCE WITH 02H .1003(4)
ll the vegetated setback remain vegetate[
BUA other that as listed in .1003(4)(c-d) o
streambank stabilization proposed on this
INUMBER AND TYPE OF SCMs: "
11 lInfiltration System__ 0
12
Bioretention Cell
_
0
13
Wet Pond
0
14
Stormwaler Wetland
0
15
Permeable Pavement
16
Sand Filter
1
17
1 Rainwater Harvesting RWH
0
18
Green Roof
0
19
Level Sp reader -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
0
25
Bayfilter
26
Filters
0
FORMS LOADED
DESIGNER CERTIFICATION
27
Name and Title:
Frank Cantrell
Cardno
28
Organization:
29
Street address:
9800 Southern Pine Blvd. Suite I
30
City, State, Zip:
Charlotte, NC 28273
31
Phone numbers :
9BO-422-0936
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
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Date

DRAINAGE AREAS
1 lis this a hi h densityproject? No
2 If so number of drainage areas/SCMs 1
Is all/part of this project subject to previous rule
3 versions? No
CLICK TO LOAD FORM
`7AINAGE AREA INFORMATION Entire Site 1
Type of SCM Sand Filter
5 Total BUA in project (sq ft 102095 sf
fipermitting)
New BUA on subdivided lots (subject to
s ft
7permitting)
New BUA outside of subdivided lots (subject to
s
8
Offsito - total area (sq ft
9
Offsite BUA (sq ft
10
113reakdown of new BUA outside subdivided lots:
-Parking sq ft
43926 sf
- Sidewalk (sq ft
6870 sf
Roof (sq ft
20250 sf
Roadway s ft
28049 sf
Future (sq ft
3000 sf
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
10%
17
Design storm inches
1 in
18
Design volume of SCM cu ft
39097 cf
19
Calculation method for design volume
ADDITIONALINEORMATION
20
Please use this space to provide any additional information about the
drainage area(s):
RAINAGE AREA INFORMATION Entire Site 1
4 lTvpeofSCM N/A
5 Total BUA from project (sq ft)
6 1995 rules
SL 2006-246
2008 rules
_
2017 rules
7
New BUA on subdivided lots (subject to
permitting) (sq ft)
1995 rules
SL 2006-246
2008 rules
_
2017 rules
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 IDGSIgn
storm (inches)

SAND FILTER
1
Drainage area number
1
2
Design volume of SCM (u ft)
"
GENERAL MDC FROM 02H .1050
3
is the SCM sized to treat the SW from all surfaces at build -out?
-1
4
Is the SCM located away from contaminated soils?
5
What are the side slopes of the SCM (H:V)?
3:1 j
Does the SCM have retaining walls, gabion walls or other engineered
6
side slopes?
No
Are the inlets, outlets, and receiving stream protected from erosion (10-
7
year storm)?
Yes
Is there an overflow or bypass for inflow volume in excess of the design
8
volume?
Yes
9
What is the method for dewatering the SCM for maintenance?
Pump (preferred)
10
If applicable, will the SCM he cleaned out after consiruclion?
Yes
11
Does the maintenance access comply with General MDC (8)?
Yes
12
jDoe.% 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
[s 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)?
16
Does the SCM follow the device specific MDC?
Yes
17
as t e SCM designed by an NC license professional?
. 0
FROM -._ -ems
2H .1056 MDC
SHWT elevation (fmsi)
Yes
18
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?
Yes
Sediment Chamber
23
Volume that can be retained in the sediment chamber (cubic feet)
19549 of
24
Will there be a permanent pool in the sediment chamber?
No
25
Bottom of the sediment chamber (fmsl)
684.00
26
Area of the sediment chamber (square feet)
5114 sf
27
Physical depth of the sediment chamber (inches)
24 in
28
Pending depth in the sediment chamber, above any permanent pool
(inches)
in
29
Elevation of top of weir between chambers (fmsl)
686
d Chamber
o IVolume that can be retained in the sand chamber (cubic feet) 19549 of
m
32
Area of the sand chamber (square feet)
5114 sf
33
Physical depth of the sand chamber (inches)
24 in
34
Pending depth in the sand chamber, above any permanent pool
(inches)
in
35
Elevation of the bypass device (fmsl)
none
36
Type of bypass device
n/a
37
Mechanism for distributing flow over the sand surface
n/a
per hour at
40 1 the sand surface? Yes
Is at least one clean -out pipe provided at the low point of each
41 junderdraln line? Yes
42 1 Will clean -out pipes be capped? es
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
43 Sand F'llter(s):
Sand Filter 1 1:08 PM 7/1/2019