SW6191001_Supplement-EZ Form_20201007

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 I Project Name Yard Storage, Inc.
2
Project Area ac
2.21
3
Coastal Wetland Area ac
0
4
Surface Water Area ac
0
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 15 feet
8 IVVill the vegetated setback remain vegetated? Yes
1 10 GIs stream bank stabilization proposed on this project? I No J
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 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
25 113a tier 0
26 IFilterra 0
N
28 Organization:
29 Street address:
30 City, State, Zip:
31 Phone number
32 Email;
FORMS LOADED
Lars O. Godwin
Castle Keep
22 Long Ridge Cou
919-796-8561
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
A
Date

SAND FILTER
III 1 l Drainage area number
to treat the SW from all surfaces at
5
What are the side slopes of the 6UM (H:V)"?
3:1
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
8
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
If the SCM is on a single family lot, does (will?) the plat comply with
13
General MDC (10)?
Yes
14
Is there an O&M Agreement that complies with General MDC (11)?
Yes
15
Is there an Plan that complies with General MDC (12)?
Yes
16
Does the SCM follow the device specific MDC?
Yes
17
Was the SCM designed by an licensed professional?
Yes
SHVV I elevation (tmsl) 369.U(
Type of sand filter (open or closed) Open
If closed, will the filter will be pre -cast or pour -in -place?
22
1 Is this sand tilter designed to attenuate peak flows?
Yes
Sediment Chamber
23
Volume that can be retained in the sediment chamber (cubic feet)
2,200 cf
24
Will there be a permanent pool in the sediment chamber?
No
25
Bottom of the sediment chamber (fmsl)
402.00
26
Area of the sediment chamber (square feet)
550 sf
27
Physical depth of the sediment chamber (inches)
60 in
Ponding depth in the sediment chamber, above any permanent pool
28
(inches)
48 in
29
1 Elevation of top of weir between chambers (fmsl)
407.00
Sand Chamber
30
Volume that can be retained in the sand chamber (cubic feet)
2,176 cf
33
Physical depth of the sand chamber (inches)
60 in
Ponding depth in the sand chamber, above any permanent pool
34
(inches)
48 in
35
Elevation of the bypass device (fmsl)
406.00
Weir lined with.....
36
Type of bypass device
riprap
37
Mechanism for distributing flow over the sand surface
Gravel/stone layer
ASTM C-33 sand
38
Sand specification for sand chamber
or equivalent
39
Depth above underdrain pipe (inches)
______12 in
Will the media be maintained to drain at least two inches per hour at
40
the sand surface?
Yes
Is at least one clean -out pipe provided at the low point of each
41
underdrain line?
Yes
42
Will clean -out pipes be capped?
-------Yes
rmase use tnis space to proviae any aaanionai inrormanon a
43 Sand Filter(s):
Sand Filter 4 4:00 PM 9/21/2020