SW6191004_SuppEZ-2018-Version-2.1.1_working_11/7/2019

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT
INFORMATION
Project Name
Project Area ac
MULTIPURPOSE TRAINING FACILITY, SOTF
3.65
1
2
3
Coastal Wetland Area ac
0
4
Surface Water Area ac
0
nDoes
is roject Hi h or Low Densit ?
Hi h
this project use an off -site SCM?
No
COMPLIANCE WITH 02H .1003(4)
7
Width of vegetated setbacks provided feet
N/A
8
Will the vegetated setback remain vegetated?
9
Is BUA other that as listed in .1003 4 c-d out of the setback?
10
ps streambank stabilization proposed on this project?
No
NUMBER
AND TYPE OF SCMs:
11
Infiltration System
2
12
Bioretention Cell
0
13
Wet Pond
0
14
1 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
Disconnected 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
DESIGNER CERTIFICATION
27
Name and Title:
Dan Saltsman, PE
28
Organization:
Stantec
29
Street address:
801 Jones Franklin Rd, Suite 300
30
City, State, Zip:
Raleigh, NC 27606
31
Phone numbers :
919-532-2331
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.
Seal
Signature of Designer
Date

DRAINAGE AREAS
1 Ils this a high density project?
2 1 If so, number of drainage areas/SCMs
Is all/part of this project subject to previous rule
3 versions?
FORMS LOADED
Yes
2
TWO
DRAINAGE
AREA INFORMATION
Entire Site
1
2
4
Type of SCM
Infiltration Basin
Infiltration Basin
5
Total BUA in project (sq ft
37662 sf
6permitting)
New BUA on subdivided lots (subject to
s ft
7
New BUA outside of subdivided lots (subject to
ermittin s
8
Offsite - total area (sq ft
10306 sf
4261 sf
6045 sf
9
Offsite BUA (sq ft
10
Breakdown of new BUA outside subdivided lots:
- Parking (sq ft
- Sidewalk (sq ft
- Roof (sq ft
- Roadway s ft
- Future (sq ft
- Other, please specify in the comment box
below (sq ft
New infiltrating permeable pavement on
subdivided lots (sq ft
13137 sf
2352 sf
10785 sf
24525 sf
8930 sf
15595 sf
11
12
New infiltrating permeable pavement odutsideof
subdivided lots s ft
13
Exisitng BUA that will remain (not subj
permitting)s ft
14
ExistingBUA that is alreadypermitted15
Existin BUA that will be removed s
16
Percent BUA
24%
36%
27%
17
Design storm inches
1 in
1 in
1 in
18
Design volume of SCM cu ft
3487 cf
976 cf
2381 cf
19
lCalculation method for design volume
Simple
Simple
Simple
ADDITIONAL INFORMATION
20
Please use this space to provide any additional information about the
drainage area(s):
Note Line Item #18 Design Volume inlcudes existing impervious areas and
is considered the required volume for each drainage area/the site. Actual
volumes stored in SCMs are reported on the SCM summary forms.

INFILTRATION SYSTEM
1 Drainage area number
2 Design volume of SCM (cu ft)
1 1 2
2244 cf 2685 cf
3
1 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?
Yes
Yes
9
What is the method for dewatering the SCM for maintenance?
Pump (preferred)
Pump (preferred)
10
If applicable, will the SCM be cleaned out after construction?
11
Does the maintenance access comply with General MDC (8)?
Yes
Yes
12
Does the drainage easement comply with General MDC (9)?
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)?
15
Is there an O&M Plan that complies with General MDC (12)?
16
Does the SCM follow the device specific MDC?
17
Was the SCM designed by an NC licensed professional? Yes Yes
SYSTEM MDC FROM 02H .1051
Proposed slope of the subgrade surface (%) 0% 0%
Are terraces or baffles provided? No No
INFILTRATION
18
19
20 Type of pretreatment:
Other
Other
Soils Data
21
Was the soil investigated in the footprint and at the elevation of the infiltration
system?
SHWT elevation (fmsl)
Depth to SHWT per soils report (in)
Yes
Yes
22
23
24
Ground elevation at boring in soils report (fmsl)
245.50
228.00
25
Is a detailed hydrogeologic study attached if the separation is between 1 and 2
feet?
26
Soil infiltration rate (in/hr)
2.02
3.30
27
IFactor of safety (FS) (2 is recommended):
2.00
2.00
Elevations
29
Bottom elevation (fmsl)
243.00 ft
223.77 ft
30
Storage elevation (fmsl)
244.50 ft
224.10 ft
31
Bypass elevation (fmsl)
244.50 ft
224.10 ft
I For Basins Onl v
32
Bottom surface area, ft2:
724 ft
1391 ft
33
Storage elevation surface area (ft)
1216. ft
1743. ft
For Trenches Only
34 Length (ft)
35 Width (ft)
36 Perforated pipe diameter, if applicable (inches)
37 Number of laterals
38 ITotal length of perforated piping
39 Stone type, if applicable
40 Stone void ratio (%) _
41 Is stone free of fines?
42 Is the stone wrapped in geotextile fabric?
43 Has at least one infiltration port been provided?
Volumes/Drawdown
44 Design volume of SCM (cu ft) 2244 cf 2685 cf
45 ITime to drawdown (hours) 23 hrs 23 hrs
)DITIONAL INFORMATION —
7Please use this space to provide any additional information about the infiltration
46 system(s):
Note: Design Volume of SCM is the actual volume the SCM can hold and not the
calucated required volume for water quality. See drainage area summary for
required volume. See attached O+M letter for Ft. Bragg compliance.
Infiltration 3 10:20 AM 10/3/2019