SW1190801_Form_(Supp.EZ)_20200610

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION --
1 Protect Name Leicester Volunteer Fire Department
2
Project Area ac
10.68
3
Coastal Wetland Area ac
_
0
4
Surface Water Area ac
0
5
Is this roject High or Low Density?
High
6
Does this project
use an off -site SCM?
No
NUM
11
Infiltration S stem 0
12
Bioretention Cell
2
13
Wet Pond
0
14
Stormwater Wetland
0
15
Permeable Pavement
0
16
Sand Filter
0
17
Rainwater Harvesting RWH
0
18
Green Roof
0
19
Level Spreader -Filter Strip LS-FS
0
20
113isconnected 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
bLfKVmfflFICATION
27
Name and Title:
Jacob D. Grieb
28
Organization:
Mattern & Craig
29
Street address:
403 E. Market Street
30
City, State, Zip:
Johnson City, TN 37601
31
Phone numbers :
423-979-2220
32
Email:
[e-mail]
Cedifcalion 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.
Signatur Designer
Data

DRAINAGE AREAS
1
Is this a high density project?
Yes
2
If so, number of drainage areas/SCMs
2
3
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
1
2
4
Type of SCM
Bioretention Cell
Bioretention Cell
Bioretention Cell
5
Total BUA in project (sq ft)
74199 sf
42254 sf
47045 sf
6
New BUA on subdivided lots (subject to permitting)
(sq ft
0 sf
0 sf
0 sf
7
New BUA outside of subdivided lots (subject to
permitting) (sf)
74199 sf
42254 sf
31945 sf
8
Offsite - total area (sq ft
sf
0 sf
44742 sf
9
Offsite BUA (sq ft)
0 sf
0 sf
15100 sf
10
1 Breakdown of new BUA outside subdivided lots:
Parking (sq ft)
16396 sf
6156 sf
10240 sf
Sidewalk (sq ft
1663 sf
0 sf
1663 sf
Roof (sq ft)
24640 sf
21184 sf
3456 sf
Roadway s ft
31500 sf
14914 sf
16586 sf
Future (sq ft)
0 sf
0 sf
0 sf
Other, please specify in the comment box
below (sq ft
0 sf
0 sf
0 sf
11
New infiltrating permeable pavement on
subdivided lots (sq ft)
0 sf
0 sf
0 sf
12
New infiltrating permeable pavement outside of
subdivided lots (sq ft
0 sf
0 sf
0 sf
13
Exisitng BUA that will remain (not subject to
permitting) (sq ft)
sf
0 sf
0 sf
14
Existin BUA that is already permitted (sq ft
sf
0 sf
0 sf
15
1 Existing BUA that will be removed (sq ft)
sf
0 sf
0 sf
16
Percent BUA
16%
69%
40%
17
Design storm (inches)
1 in
1 in
18
Design volume of SCM cu ft
3405 cf
3989 cf
19
Calculation method for design volume
Simple Method
Simple Method
ADDITIONAL INFORMATION
20
Please use this space to provide any additional information about the
drainage area(s):

BIORETENTION CELL
1
Drainage area number
1
2
2
IDesign volume of SCM (cu ft)
3405 cf
3989 cf
GENERAL MDC FROM 02H .1050
3
Is the SCM sized to treat the SW from all surfaces at build -out?
Yes
Yes
4
Is the SCM located away from contaminated soils?
Yes
Yes
5
What are the side slopes of the SCM (H:V)?
3:1
3:1
6
Does the SCM have retaining walls, gabion walls or other engineered side
slopes?
No
No
7
Are the inlets, outlets, and receiving stream protected from erosion (10-year
storm)?
Yes
Yes
8
Is there an overflow or bypass for inflow volume in excess of the design
volume?
What is the method for dewatering the SCM for maintenance?
Yes
Yes
9
Pump (preferred)
Pump
(preferred)
10
If applicable, will the SCM be cleaned out after construction?
Yes
Yes
11
Does the maintenance access comply with General MDC (8)?
Yes
Yes
12
Does the drainage easement comply with General MDC (9)?
Yes
Yes
13
If the SCM is on a single family lot, does (will?) the plat comply with General
MDC (10)?
14
Is there an O&M Agreement that complies with General MDC (11)?
Yes
Yes
15
Is there an O&M Plan that complies with General MDC (12)?
Yes
Yes
16
Does the SCM follow the device specific MDC?
Yes
Yes
17
Was the SCM designed by an NC licensed professional?
Yes
Yes
BIORETENTION
CELL MDC FROM 02H .1052
18
SHWT elevation (fmsl)
< 2161.00
< 2149.00
19
Bottom of the bioretention cell (fmsl)
2163.50
2151.50
20
Ponding depth of the design storm (inches)
12 in
12 in
21
Surface area of the bioretention cell (square feet)
3757 sf
4045 sf
22
Design volume of the bioretention cell (cubic feet)
3405 cf
3989 cf
23
Is the bioretention cell used for peak attenuation?
Yes
Yes
24
Depth of peak attenuation over planting surface (in)
24 in
24 in
25
Height of peak attenuation outlet above the planting surface (in)
18 in
18 in
26
Infiltration rate of the in situ soil (inch/hour)
N/A
N/A
27
Diameter of the underdrain pipes (if applicable)
4"
4"
28
Does the design include Internal Water Storage (IWS)?
Yes
Yes
29
1 if so, elevation of the top of the IWS (fmsl)
2165.5
2153.5
30
Elevation of the planting surface (fmsl)
2167
2155
31
What type of vegetation will be planted? (grass, trees/shrubs, other)?
Other
Other
32
Media depth (inches)
30 in
30 in
33
Percentage of medium to coarse washed sand by volume
75-80%
75-80%
34
Percentage of fines (silt and clay) by volume
8-10%
8-10%
35
1 Percentage of organic matter by volume
5-10%
5-10%
36
Type of organic material
ie: pine bark
ie: pine
bark
37
Phosphorus Index (P-Index) of media (unitless)
<50
<50
38
Will compaction be avoided during construction?
Yes
Yes
39
Will cell be maintained to a one inch/hour standard?
Yes
Yes
40
Depth of mulch, if applicable (inches)
N/A
N/A
41
Type of mulch, if applicable
N/A
N/A
42
How many clean out pipes are being installed?
2
2
43
Type of pretreatment that will be used:
N/A
N/A
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
44 bioretention cell(s):
31. Sod
Bioretention 1 8:46 AM 6/4/2020