SW6200701_Form (Supp.EZ)_20210119

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1
Project Name
WH Place
2
Project Area (ac)
2.13
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.1603(4)
7
Width of ve etated setbacks provided feet
N/A
8
WIII the vegetated setback remain vegetated?
NIA
9
If BUA is proposed in the setback, does it meet NCAC 02H.1003 4 c-d ?
NIA
10
Is streambank stabilization proposed on this project?
No
NUMBER AND TYPE OF $CMS:
11
Infiltration System
12
Bioretention Cell
13
Wet Pond
14
Slonnwaler Wetland
15
Permeable Pavement
16
Sand Filter
1
17
Rainwater Harvesting RWH
18
Green Roof
19
Level S reader -Filler Std LS-FS
20
Disconnected Impervious Surface DIS
21
Treatment Swale
22
Dry Pond
23
SlormFilter
24
Silva Cell
25
Bayfilter
26
Filterm
FORMS LOADED
DESIGNER CERTIFICATION
27
Name and Title:
George M. Rose
28
Organization:
_
George M. Rose, P.E.
29
Street address:
1206 Longleaf Drive
30
City, State, Zip:
_ _
Fayetteville, NC 28305
31
Phone numbers :
910-977-5822
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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DRAINAGE AREAS
1
Is this a high density project?
Yas
2
If so, number of drainage areas/SCMs
1
3
Does this pro ect have low density areas?
No
4
If so, number of low tlensit draina a areas
0
5
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE AREA INFORMATION:
Entire Site
1
4
Type of SCM
Sand Filter
5
Total drainage area (sq ft
92,625
65,556
6
Onsite drainage area (sq ft
92,625
65,556
7
Offsfle drainage area (sq ft
0
0
8.
Total BUA In project (sq ft
31912 sf
31912 sf
9
New BUA on subdivided lots (subject to permitting)
(sq ft
10permitting)
New BUA not on subdivided lots (subject to
s
31912 sf
31912 sf
11
Offsite BUA (sq ft
12
Breakdown of new BUA not on subdivided lots:
- Parkin s ft
22364 sf
22364 sf
- Sidewalk (sq ft
3215 sf
3215 sf
- Roof (sq ft
5860 sf
5860 at
- Roadway s ft
- Future (sq ft
- Other, please specify in the comment box
below (sq ft)
473 sf
473 sf
13
New infiltrating permeable pavement on
subdivided lots (sq ft
14
New infiltrating permeable pavement not on
isubdivided lots (sq ft
15permitting)
Existing BUA that will remain (not subject to
s ft
at
sf
16
Existing BUA that is already permitted (sq ft
17
Existing BUA that will be removed (sq ft
18
Percent BUA
35%
49%
19
Design storm inches
1.0 In
20
Design volume of SCM (cu ft)
4097 cf
21
Calculation method for design volume
Simple
ADDITIONAL INFORMATION
22
Please use this space to provide any additional information about the
drainage area(s):
Other BUA is concrete dumpster pad.

SAND FILTER
23
Volume that can be retained in the sediment chamber (cubic feet)
2326 cf
24
Will there be a permanent pool in the sediment chamber?
No
25
Bottom of the sediment chamber (fmsl)
167.80
26
Area of the sediment chamber (square feet)
720 sf
27
Physical depth of the sediment chamber (inches)
26 in
28
Ponding depth in the sediment chamber, above any permanent pool
(inches)
26 in
291
Elevation of top of weir between chambers (fmsl)
170
Sand Chamber
30
Volume that can be retained in the sand chamber (cubic feet)
5368 cf
31
Bottom of the sand chamber (fmsl)
166.30
32
Area of the sand chamber (square feet)
1063 sf
33
Physical depth of the sand chamber (inches)
24 in
34
Ponding depth in the sand chamber, above the sand surface
(inches)
32 in
351
Elevation of the bypass device (fmsl)
170.5
36
Type of bypass device
Weir
37
Mechanism for distributing flow over the sand surface
Weir
38
Sand specification for sand chamber
ASTM C-33
39
Depth above underdrain pipe (inches)
12 in
40
Will the media be maintained to drain at least two inches per hour at
the sand surface?
Yes
41
Is at least one clean -out pipe provided at the low point of each
underdrain line?
Yes
42
1 Will clean -out pipes be capped?
Yes
ONAL INFORMATION
Please use this space to provide any additional information about the
sand filter(s):
Sand Filter 1 10:55 AM 1/19/2021