HomeMy WebLinkAboutSW6110103_Supplement-EZ Form_20230127JSOC - Microgrid
Project number: 60652522
Attachment B — NCDEQ Supplement and O&M Forms
AECOM
SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 Project Name
2 Project Area ac
3 Coastal Wetland Area (ac)
JSOC - MICROGRID INSTALLATION AND INTEGRATION
3.38
1 6 1 Does this project use an off -site SCM? I No
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
1 Infiltration System
1
12
Bioretention Cell
1
13
Wet Pond
14
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
1 Dry Pond
23
StormFilter
24
Silva Cell
25
Bayfilter
26
Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27
Name and Title:
Brian D. Fisher
28
Organization:
AECOM
29
Street address:
10 S. Jefferson, Suite 1600
30
City, State, Zip:
Roanoke, VA 24011
31
Phone numbers :
540-857-3226
32
1 Email:
brian.fisher@aecom.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.
��j1EISIAI��/
SEAL
046338
��UGI.AS
Seal
Signature of Designer
Date
10113h?-
DRAINAGE AREAS
1
Is this a high density project?
Yes
2
If so, number of drainage areas/SCMs
4
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
Entire Site
1
2
4
Type of SCM
--
Infiltration Trench
Bioretention
SITE 1
5
Total drainage area (sq ft
147,233 sf
85,000 sf
23,647 sf
6
Onsite drainage area (sq ft
119,000 sf
80,275 sf
23,647 sf
7
Offsite drainage area (sq ft
4,725 sf
4,725 sf
8
JTotal BUA in project (sq ft
94,139 sf
58,947 sf
17,466 sf
9
New BUA on subdivided lots (subject to permitting)
(sq ft)
10permitting)
New BUA not on subdivided lots (subject to
sf
15,181 sf
547 sf
12,890 sf
11
Offsite BUA (sq ft)
1,650 sf
1,650 sf
12
Breakdown of new BUA not on subdivided lots:
- Parking (sq ft)
24,850 sf
24,850 sf
- Sidewalk (sq ft
5,050 sf
5,050 sf
- Roof (sq ft
- Roadway s ft
- Future (sq ft
- Other, please specify in the comment box below
(sq ft)
23,400 sf
23,400 sf
sf
sf
17,634 sf
3,000 sf
12,890 sf
13
New infiltrating permeable pavement on subdivided
lots (sq ft)
14
New infiltrating permeable pavement not on
subdivided lots (sq ft
15permitting)
Existing BUA that will remain (not subject to
s ft
8,669 sf
450 sf
16
Existing BUA that is already permitted (sq ft
58,400 sf
58,400 sf
17
Existing BUA that will be removed (sq ft)
6,140 sf
1,023 sf
18
Percent BUA
64%
69%
74%
19
Design storm (inches)
--
1.0 in
1.0 in
20
Design volume of SCM (cu ft)
--
4,912 cf
1,074 cf
21
Calculation method for design volume
--
Simple
Simple
ADDITIONAL
INFORMATION
Please use this space to provide any additional information about the
22 drainage area(s):
LINE 8, Entire Site: For Total BUA in project -add. impery from permit = (2.49x61 %)
=66,163 sf-58,400 sf (to trench SCM)=7,763 sf + impery to SCMs + impery in bypass
areas LIINE 12, Other: DA-1, permitted=3,000 sf (other on -site); permit MOD=547 sf
(new BUA) to trench SCM. DA-2: for permit MOD: 12,890 (new BUA) from fuel
containment and assoc pvmt, treated in new SCM
DRAINAGE AREA INFORMATION
Entire Site
1
2
Bioretention
SITE 1
3
4
4
Type of SCM
--
Infiltration Trench
Bypass
SITE 1
Bypass
SITE 2
5
Total drainage area (sq ft)
147,233 sf
85,000 sf
23,647 sf
3006
12072
6
Onsite drainage area (sq ft
119,000 sf
80,275 sf
23,647 sf
3006
12072
7
Offsite drainage area (sq ft)
4,725 sf
4,725 sf
8
ITotal BUA in project (sq ft
94,139 sf
58,947 sf
17,466 sf
3006 sf
6957 sf
9
New BUA on subdivided lots (subject to permitting)
(sq ft
10permitting)
New BUA not on subdivided lots (subject to
sf
Offsite BUA (sq ft)
15,181 sf
547 sf
12,890 sf
470 sf
1274 sf
11
1,650 sf
1,650 sf
12
Breakdown of new BUA not on subdivided lots:
- Parking (sq ft
24,850 sf
24,850 sf
- Sidewalk (sq ft
5,050 sf
5,050 sf
- Roof (sq ft)
23,400 sf
23,400 sf
- Roadway (sq ft)
sf
- Future (sq ft
sf
- Other, please specify in the comment box below
(sq ft)
17,634 sf
3,000 sf
12,890 sf
470 sf
1274 sf
13
New infiltrating permeable pavement on subdivided
lots (sq ft
14
New infiltrating permeable pavement not on
subdivided lots (sq ft)
15permitting)
Existing BUA that will remain (not subject to
s ft
8,669 sf
450 sf
2536 sf
5683 sf
16
Existing BUA that is already permitted (sq ft)
58,400 sf
58,400 sf
17
Existing BUA that will be removed (sq ft
6,140 sf
1,023 sf
5117 sf
18
Percent BUA
64%
69%
74%
100%
58%
19
Design storm inches
--
1.0 in
1.0 in
--
--
20
Design volume of SCM cu ft
--
4,912 cf
1,074 cf
--
--
21
Calculation method for design volume --
INFORMATION
Please use this space to provide any additional information about the
drainage area(s):
Simple
Simple
--
--
ADDITIONAL
Reprint of DRAINAGE AREA INFORMATION
with all "BYPASS" columns included
22
LINE 8, Entire Site: For Total BUA in project -add. impery from permit = (2.49x61 %)
=66,163 sf-58,400 sf (to trench SCM)=7,763 sf + impery to SCMs + impery in bypass
areas LIINE 12, Other: DA-1, permitted=3,000 sf (other on -site); permit MOD=547 sf
(new BUA) to trench SCM. DA-2: for permit MOD: 12,890 (new BUA) from fuel
Illcontainment and assoc pvmt, treated in new SCM
BIORETENTION CELL
1
Drainage area number
2
2
Minimum required treatment volume cu ft
1074 cf
GENERAL MDC FROM 02H .1050
3
Is the SCM sized to treat the SW from all surfaces at build -out?
Yes
4
Is the SCM located away from contaminated soils?
Yes
5
What are the side slopes of the SCM (H:V)?
3:1
6
Does the SCM have retaining walls, gabion walls or other engineered
side slopes?
Yes
7
Are the inlets, outlets, and receiving stream protected from erosion
(10-year storm)?
Yes
8
Is there an overflow or bypass for inflow volume in excess of the
design volume?
Yes
9
What is the method for dewatering the SCM for maintenance?
Pump (preferred)
10
If applicable, will the SCM be cleaned out after construction?
Yes
11
Does the maintenance access comply with General MDC (8)?
Yes
12
Does the drainage easement comply with General MDC (9)?
N/A
13
If the SCM is on a single family lot, does (will?) the plat comply with
General MDC (10)?
Is there an O&M Agreement that complies with General MDC (11)?
N/A
14
Yes
15
Is there an O&M Plan that complies with General MDC (12)?
Yes
16
Does the SCM follow the device specific MDC?
Yes
17
lWas the SCM designed by an NC licensed professional?
Yes
BIORETENTION
CELL MDC FROM 02H .1052
18
SHWT elevation (fmsl)
255.20
19
Bottom of the bioretention cell (fmsl)
260.00
20
Ponding depth of the design storm (inches)
9 in
21
Surface area of the bioretention cell (square feet)
1260 sf
22
Design volume of SCM (cu ft)
1092 cf
23
Is the bioretention cell used for peak attenuation?
Yes
24
Depth of peak attenuation over planting surface (in)
18 in
25
Height of peak attenuation outlet above the planting surface (in)
9 in
26
Infiltration rate of the in situ soil (inch/hour)
0.50 in/hr
27
Diameter of the underdrain pipes (if applicable)
6", 8"
28
Does the design include Internal Water Storage (IWS)?
Yes
29
if so, elevation of the top of the IWS (fmsl)
262.50
30
Elevation of the planting surface (fmsl)
What type of vegetation will be planted? (grass, trees/shrubs, other)?
Media depth (inches)
264.00
31
Grass
32
30 in
33
Percentage of medium to coarse washed sand by volume
75%-85%
34
Percentage of fines (silt and clay) by volume
8%-10%
35
Percentage of organic matter by volume
5%-10%
36
Type of organic material
Engineered Fill
37
Phosphorus Index (P-Index) of media (unitless)
< 50
38
Will compaction be avoided during construction?
Yes
39
Will cell be maintained to a one inch/hour standard?
Yes
40
Depth of mulch, if applicable (inches)
N/A
41
IType of mulch, if applicable
N/A
42
How many clean out pipes are being installed?
3
43
Type of pretreatment that will be used:
Additional
Information
ADDITIONAL
44
INFORMATION
Please use this space to provide any additional information about the
bioretention cell(s):
(1) pretreatment: containment tank and grass swale. (2) project located at
Fort Bragg - no easements required (3) boring B-2 ground elev=268.2+/- (see
Sheet CD101); boring advanced 13' with no SHWT encountered; SHWT Elev
255.2 given is terminal elev of boring; bottom of bioret = 260 feet. (4)
Drawings require "Engineered Fill" to consist of 5-10% organic material (such
as pine bark fines).
Permit Number:
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
BDF CG501 1. Plans (1" - 50' or larger) of the entire site showing:
Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Cell dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Recorded drainage easement and public right of way (ROW),
Clean out pipe locations,
Overflow device, and
Boundaries of drainage easement.
BDF CG501 2. Plan details (1" = 30' or larger) for the bioretention cell showing:
- Cell dimensions
Pretreatment system,
High flow bypass system,
Maintenance access,
Recorded drainage easement and public right of way (ROW),
Design at ultimate build -out,
Off -site drainage (if applicable),
Clean out pipe locations,
Overflow device, and
Boundaries of drainage easement.
Indicate the P-Index between 10 and 30
BDF CG501 3. Section view of the bioretention cell (1" = 20' or larger) showing:
Side slopes, 3:1 or lower
Underdrain system (if applicable), and
Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
BDF ATTACHMENT-G 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
ATTACHMENT-H results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
Soil permeability,
Soil composition (% sand, % fines, % organic), and
P-index.
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 3 of 4
Permit Number:
(to be provided by DWQ)
BDF CG501 5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
(SOD) A variety of suitable species,
Sizes, spacing and locations of plantings,
Total quantity of each type of plant specified,
A planting detail,
The source nursery for the plants, and
Fertilizer and watering requirements to establish vegetation.
BDF CG101 6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
CE101 entire drainage area is stabilized.
BDF ATTACHMENT-D 7. The supporting calculations (including underdrain calculations, if applicable).
BDF ATTACHMENT-B 8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
N/A N/A 9. A copy of the deed restriction.
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 4 of 4
DEPARTMENT OF THE ARMY
US ARMY INSTALLATION MANAGEMENT COMMAND
HEADQUARTERS, UNITED STATES ARMY GARRISON, FORT BRAGG
2175 REILLY ROAD, STOP A
FORT BRAGG NORTH CAROLINA 28310-5000
October 6, 2022
Department of Environmental Quality
Division of Energy, Mineral and Land Resources
Stormwater Permitting Program
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: JSOC, C4 Facility (L166362) (2012) and Microgrid
Installation and Integration (2022)
Dear Sir/Madam:
In lieu of Form SW401-O&M, Ft Bragg will comply with NPDES
Phase II Permit # NCS000331. Fort Bragg NPDES Phase II Permit #
NCS000331 Part II.F.l.b&c requires development and
implementation of strategies which include a combination of
structural and /or non-structural best management practices
(BMPs) and ensure long-term operation and maintenance of BMPs.
Additionally, Part II.G.2.h requires Ft Bragg to maintain and
implement an O&M program for structural stormwater controls.
The 0&M program shall specify the frequency of inspection and
routine maintenance requirements. Ft Bragg shall inspect and
maintain all structural stormwater controls in accordance with
the schedule developed by Ft Bragg.
Ft Bragg's Stormwater Control Measures Inspection and
Maintenance Manual fulfills these requirements of the NPDES Phase
II permit.
Fort Bragg military installation is committed to maintaining
compliant environmental programs while ensuring full mission
support. If you have any questions on the information provided
please contact Mr. Lee Ward, Chief, Water Management Section,
Environmental Division at (910)308-2686 or
lee.p.ward.civ@mail.mil .
Sincer , _
Z:I)z
dlr/�
Lh�
David A. Heins
Chief, Environmental Division
Directorate of Public Works
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
— Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
— Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will be taken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches
�}. Records of operation and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblems:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
bioretention cell
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
The inlet device: pipe,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
applicable).
Form SW401-Bioretention O&M-Rev.3 Page 1 of 4
BMP element:
The pretreatment area
The bioretention cell:
vegetation
The bioretention cell:
soils and mulch
Potential problems:
Flow is bypassing
pretreatment area and/or
gullies have formed.
Sediment has accumulated to
a depth greater than three
inches.
Erosion has occurred
Weeds are present.
Best professional practices
show that pruning is needed
to maintain optimal plant
health.
Plants are dead, diseased or
dying.
Tree stakes/wires are present
six months after planting.
Mulch is breaking down or
has floated away.
Soils and/or mulch are
clogged with sediment.
An annual soil test shows that
pH has dropped or heavy
metals have accumulated in
the soil media.
How I will remediate the problem:
Regrade if necessary to route all
flow to the pretreatment area.
Restabilize the area after grading.
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
restabilize the pretreatment area.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Remove the weeds, preferably by
hand.
Prune according to best professional
practices.
Determine the source of the
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Remove tree stake/wires (which
can kill the tree if not removed).
Spot mulch if there are only random
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Determine the extent of the clogging
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
possible.
Dolomitic lime shall be applied as
recommended per the soil test and
toxic soils shall be removed,
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3 Page 2 of 4
BMP element:
Potential problems:
How I will remediate the problem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
(if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The drop inlet is damaged
Repair or replace the drop inlet.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Bioretention O&M-Rev.3 Page 3 Of 4
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name: JSOC - Microgrid Installation and Integration tion (PN97470)
BMP drainage area number: 2
Print name:
Title:
Address:—
Phone: —
Signature:
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, , a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this
day of 1 , and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires
Form SW401-Bioretention I&M-Rev. 2 Page 4 Of 4