SW6221101_Supplement-EZ Form_20230327

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 JProject Name
2 Project Area ac
3 Coastal Wetland Area ac
4 Surface Water Area ac
5 Is this project High or Low Density?
6 1 Does this project use an off -site SCM?
Fort Braqq Technical Su
15.16
0
0
High
No
Annex, PN79439.2
COMPLIANCE WITH 02H .1003(4)
7
Width of vegetated setbacks provided feet
30
8
Will the vegetated setback remain vegetated?
N/A
9
If BUA is proposed in the setback, does it meet NCAC 02H.1003 4 c-d ?
N/A
10
Is streambank stabilization proposed on this project?
No
NUMBER AND TYPE OF SCMs:
11
Infiltration System
12
Bioretention Cell
4
13
Wet Pond
14
1 Stormwater Wetland
15
Permeable Pavement
16
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
23
StormFilter
Silva Cell
Bayfilter
Filterra
24
25
26
FORMS LOADED
IDESIGNER CERTIFICATION
27
Name and Title:
28
Organization:
29
Street address:
30
City, State, Zip:
31
Phone numbers :
32
Email:
Lorraine Roberts, PE - Civil Engineer
Exp Federal, Inc.
205 N Michigan Ave., Suite 3800
Chicago, IL 60601
312-616-3309
I Lorraine. Robertsna exDfederal.com
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.
; \A CAROB'
oFEss /o i
SEAL
046 49
ENGIN R
NE B. RO
Seal
.VJ
Signature of Designer
3/22/23
Date

DRAINAGE AREAS
1
Is this a high density project?
Yes
2
If so, number of drainage areas/SCMs
5
3
Does this project have low density areas?
No
4
If so, number of low density drainage areas
0
5
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE
AREA INFORMATION
Type of SCM
Entire Site
1
2
3
4
5
4
Bioretention A
Bioretention B5
Bioretention B4
Bioretention B3
Bypass
5
Total drainage area (sq ft
722517
421487
57336
36539
50100
157055
6
Onsite drainage area (sq ft
660203
364781
51728
36539
50100
157055
7
Offsite drainage area (sq ft)
Total BUA in project s ft
New BUA on subdivided lots (subject to
s ft)
New BUA not on subdivided lots (subject to
sf
Offsite BUA (sq ft
Breakdown of new BUA not on subdivided lots:
- Parking (sq ft
- Sidewalk (sq ft
- Roof (sq ft
2314
56706
5608
0
0
0
8
sf
237759 sf
31155 sf
24840 sf
35607 sf
sf
9permitting)
[!329361
sf
sf
sf
31155 sf
sf
sf
24840 sf
sf
sf
sf
10permitting)
329361 sf
sf
237759 sf
35607 sf
sf
11
sf
sf
sf
12
116629 sf
25027 sf
31155 sf
24840 sf
35607 sf
sf
1733 sf
1733 sf
sf
sf
sf
sf
25222 sf
25222 sf
sf
sf
sf
sf
- Roadway s ft
31897 sf
31897 sf
sf
sf
sf
sf
- Future (sq ft
sf
sf
sf
sf
sf
sf
- Other, please specify in the comment box
below (sq ft
153878 sf
sf
sf
153878 sf
sf
sf
sf
sf
sf
sf
13
New infiltrating permeable pavement on
subdivided lots (sq ft
sf
sf
sf
sf
14
New infiltrating permeable pavement not on
subdivided lots s ft)
Existing BUA that will remain (not subject to
permitting)s ft
sf
sf
sf
sf
15
sf
sf
sf
sf
sf
sf
16
ExistingBUA that is alreadypermitted s ft
sf
sf
sf
sf
sf
sf
17
ExistingBUA that will be removed s ft
152178 sf
90848 sf
23311 sf
14434 sf
4957 sf
18628 sf
18
Percent BUA
50%
56%
71 %
68%
71 %
0%
19
Design storm inches
1.0 in
1.0 in
1.0 in
1.0 in
20 Design volume of SCM cu ft
21 lCalculation method for design volume
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 drainage area(s):
19588 cf
2576 cf
2015 cf
2879 cf
SIMPLE
SIMPLE
SIMPLE
SIMPLE
"Other" BUA for DA1 is the paved area around the building. Certain areas of
the site bypass the pond, therefore the total site areas will not equal the
sum of the pond areas.

BIORETENTION CELL
1 Drainage area number
2 Minimum required treatment volume 11cu ft
ENERAL MDC FROM 02H .1050
3 Is the SCM sized to treat the SW from all surfaces at build -out?
4 Is the SCM located away from contaminated soils?
5 What are the side slopes of the SCM (H:V)?
6 Does the SCM have retaining walls, gabion walls or other
engineered side slopes?
7 Are the inlets, outlets, and receiving stream protected from erosion
(10-year storm)?
8 Is there an overflow or bypass for inflow volume in excess of the
design volume?
9 What is the method for dewatering the SCM for maintenance?
10 If applicable, will the SCM be cleaned out after construction?
11 Does the maintenance access comply with General MDC (8)?
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)?
1 (A) 1 2 (135) 1 3 (134) 1 4 (133)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
3:1
3:1
3:1
3:1
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Pump (preferred)
Yes
Yes
N/A
N/A
Yes
Pump (preferred)
Yes
Yes
N/A
N/A
Yes
Pump (preferred)
Yes
Yes
N/A
N/A
Yes
Pump (preferred)
Yes
Yes
N/A
N/A
14
Is there an O&M Agreement that complies with General MDC (11)? No
No
No
No
15
Is there an O&M Plan that complies with General MDC (12)?
No
Yes
No
Yes
No
Yes
No
Yes
16
Does the SCM follow the device specific MDC?
17
Was the SCM designed by an NC licensed professional?
Yes
Yes
Yes
Yes
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
SHWT elevation (fmsl)
Bottom of the bioretention cell (fmsl)
Ponding depth of the design storm (inches)
Surface area of the bioretention cell (square feet)
Design volume of SCM (cu ft)
Is the bioretention cell used for peak attenuation?
Depth of peak attenuation over planting surface (in)
Height of peak attenuation outlet above the planting surface (in)
Infiltration rate of the in situ soil (inch/hour)
Diameter of the underdrain pipes (if applicable)
Does the design include Internal Water Storage (IWS)?
if so, elevation of the top of the IWS (fmsl)
Elevation of the planting surface (fmsl)
What type of vegetation will be planted? (grass, trees/shrubs,
other)?
Media depth (inches)
Percentage of medium to coarse washed sand by volume
Percentage of fines (silt and clay) by volume
Percentage of organic matter by volume
Type of organic material
Phosphorus Index (P-Index) of media (unitless)
Will compaction be avoided during construction?
Will cell be maintained to a one inch/hour standard?
Depth of mulch, if applicable (inches)
Type of mulch, if applicable
How many clean out pipes are being installed?
Tvae of aretreatment that will be used:
ADDITIONAL INFORMATION
Please use this space to provide any additional information about
44 Ithe bioretention cell(s):
Surface area is considered to be the area of the bottom of the pond.
Volume accounts for 3:1 sideslopes. Items 12, 14, & 15 are not necessary
at Fort Bragg. Fort Bragg has a standard O&M program for the entire
base.
assumed >250
255.00
12 in
21300 sf
22556 cf
Yes
24 in
18 in
in/hr
6 in
Yes
253.5
255
Grass
30 in
85%
10%
5%
Pine Bark Fines
10
Yes
Yes
N/A
N/A
y
>247
266.00
12 in
3783 sf
4704 cf
No
N/A
N/A
in/hr
4 in
Yes
264.5
266
Grass
30 in
85%
10%
5%
Pine Bark Fines
10
Yes
Yes
N/A
N/A
>246
266.00
12 in
4656 sf
5586 cf
No
N/A
N/A
in/hr
4 in
Yes
264.5
266
Grass
30 in
85%
10%
5%
Pine Bark Fines
10
Yes
Yes
N/A
N/A
>245
266.00
12 in
4656 sf
5586 cf
No
N/A
N/A
in/hr
4 in
Yes
264.5
266
Grass
30 in
85%
10%
5%
Pine Bark Fines
10
Yes
Yes
N/A
N/A
Bioretention 3 2:02 PM 3/22/2023