SW3190804_2712 - Pine Forest II Supplemental-EZ Form_12/19/2019

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 Project Name
2
Project Area (ac
3
Coastal Wetland Area (ac)
4
Surface Water Area (ac)
5
Is this project High or Low Density?
6
Does this project use an off -site SCM?
COMPLIANCE WITH 02H .1003(4)
Pine For
29.3E
O
0.39-
Higl,
No
7 I Width of vegetated setbacks provided (feet) 30
8 Will the vegetated setback remain vegetated? Yes
9 Is BUA other that as listed in .1003 4 c-d out of the setback? Yes
10 Is streambank stabilization proposed on this project? No
NUMBER AND TYPE OF SCMs:
11 Infiltration Svstem
13 JWet Pond
14 IStormwater Wetland
16 1 Sand Filter
17 Rainwater Harvesting RWH
18 Green Roof
19 Level Spreader -Filter Strip LS-FS
20 Disconnected Impervious Surface (DIS)
21 Treatment Swale
22 Dry Pond
24 JSilva Cell
25 Bayfilter
26 Filterra
FORMS LOADED
DESIGNER
CERfIFICAI ION
Name and Title:
27
28
Organization:
29
Street address:
30
City, State, Zip:
31
Phone numbers :
32
Email:
Patrick Murphy - Department Manager
R. Joe Harris & Associates
1186 Stonecrest Blvd
Tega Cay, SC 29708
(803) - 802 - 1799
pm [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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Date
Seal

1
Is this a hi h densiroject? Yes
2
If so, number of drains a areas/SCMs 2
Is all/part of this project subject to previous rule
3
versions? No
FORMS LOADED
DRAINAGE AREA INFORMATION
4 iyat2f SCM _
Entire Site
1
Sand Filter
2
Sand Filter
5
Total BUA in r�jo ect s ft
_ _
344344 sf
211335 sf
133009 sf
6
New BUA on subdivided lots (subject to permitting)
s ft
182579 sf
114974 sf
67605 sf
7_
New BUA outside of subdivided lots (subject to
oermittin sf)
_
161265 sf
958_61 sf
65404 sf
8
Offsite - total areas ft
14068 sf
570 sf13498
sf�
9
Offsite„1860
sf W T
1860 sf
10
Breakdown of new BUA outside subdivided lots:
Parking sq ft..�................. a
Sidewalkkq ft
_
19849 sf
11940 sf
7909 sf
- Roof N ft_1
Roadway s ft
97512 sf
_.
57533 sf
39979 sf
Future nm__
"" -
--�
Other,
- leases specify
p p fy in the comment box
below s ft
----
,-__......._._ _ _
_m _ �..-.
_..._..
11
New infiltrating permeable pavement on
subdivided lots s ft
12
_
New infiltrating permeable pavement outside of
subdivided lotssq ft)
13
Exisitng BUA that will remain (not subject to
ermittino s ft
.w
14 1
Existinq BUA that is alread permitted (sq ft
3920 sf
2181 sfm1739
sf
15
Existing BUA that will be removed (sq ft) _r
16
Percent BUA
31%
d 50%
37%
17_
Desi n storm inches
5 in
5 in
5 in
18
Design „volume , of,SCM (cu.ft�
_
96203 cf
109810 Cf
19 Calculation method for design volume
ADDITIONAL INFORMATION _
Please use this space to provide any additional information about the
20 drainage area(s):
Avg. End Area
Avg. End Area

SAND FILTER
23
Volume that can be retained In the sediment chamber (cubic feet)
15340 cf
20592 cf
24
Will there be a permanent pool in the sediment chamber?
No
No
25
Bottom of the sediment chamber (fmsl)
_
790.00
788.00
26
Area of the sediment chamber (square feet)
5830 sf
6775 sf
27
Physical depth of the sediment chamber (inches)
48 in
28
Ponding depth in the sediment chamber, above any permanent pool
(inches)
48 in
48 in
29
Elevation of top of weir between chambers (fmsl)
_
_ 793
791
Sand Chamber
30
Volume that can be retained in the sand chamber (cubic feet)
15986 cf
20265 cf
39
Bottom of the sand chamber (fmsl)
790.00
788.00
32
Area of the sand chamber (square feet)
5884 sf
6767 sf
33
Physical depth of the sand chamber (inches)
48 in
_ 48 in
34
Ponding depth in the sand chamber, above any permanent pool
(inches)
48 in
48 in
35
Elevation of the bypass device (fmsl)
796
794
36
Type of bypass device
Riser Weir
Riser Weir
37
Mechanism for distributing flow over the sand surface
Forebay Spillway
Forebay Spillway
38
Sand specification for sand chamber
ASTM C33
ASTM C33
39 Depth above underdrain pipe (inches) 15 in 15 in
Will the media be maintained to drain at least two inches per hour at the
40 sand surface? Yes Yes
Is at least one clean -out pipe provided at the low point of each
41 underdrain line? Yes Yes
42 Will clean -out pipes be capped? Yes Yes
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
43 ISand Filter(s):
Sand Filter 3 9:48 AM 12/16/2019