SW6170501 - Parking Lot Expansion for Sandhills Utility Services (2)

Fort Bragg, NC CUMBERLAND County
C Heath Wadsworth, PE, Draper Aden Associates
j Part If: General Project and Applicant Information
Project Name: Parking Lot Expansion for Sandhills Utility Services - Date: 26=Apr-17
Project Street Address BLDG 2-6503 Butner -Road - Lat
City Fort Bragg Zip 12830Y - Long =
Directions to Project Sandhills Utility Services Center near the intersectio_ n_ of -Butner and Reilly County CUMBERLAND-
(from
UMBERLAND(from nearest intersection) Roads on Fort Bragg NON -COASTAL
Project Applicant: JSandhills Utility Services, LLC--
(identify
LC_(identify the corporation, organization, property owner, designated
government official, etc. which owns the project.)
Owner / Signing Offical's Name:
Title:
Address
City
State
Zip
Phone
Fax
Email
Katherine Brown
VP Cor' rate Services
Bldg 2-6503 Butner Road
Fort Bragg
NC —
28307
910-496-2208 -
katherinebrown0sandhdlsutdit6 coin
Status of applicant: I - - owner
River Basin Cape Fear
Receiving Stream(s) Tank Creek -
Stream Class(es) C (18=23.27) = -
Surface Water Area (ac) 0 Coastal wetland area (ac) .0
Total property area (ac) 4.28- Total project area (ac) 4-28
Goals/characteristics YES Volume Matching (LID) NO- Drains to an offsite stormwater system
NO Low Density NO , Within 575' of Saltwater ORW
YES High Density NO _ Within 5 miles of a public airport
Briefly summarize how the stormwater runoff wil be treated
The stormwater will be treated usmg infiltration basins -
Part III: Permit Information
Status of construction Not Started
Other permits needed YES Sedimentation & erosion controlNO 404 Permit/ 401 Certification
NO . CAMA Major Permit NO Isolated Wetlands Permit
NO _Threatened &Endangered Species NO, NPDES Industrial Stormwater Permit
If an application for this project has been previously returned, provide the original project number and previous name of the project
NIA ---
Provide the permit type, number and issue date for any permits that have already been obtained for this
If claiming vested rights, then identify (and attach) the supporting documents and approval dates
NO Approval of a site-specific development plan or PUD Approval date
NO ' Valid budding permit Issue date
-NO Other Date
Not Started
Point of Contact
STORM -EZ
Version 1 4 Application
Phone number -
00 95�,
q. 600 7V
4/26/2017
Page 4 of 17

Fort Bragg, NC CUMBERLAND County
C. Heath Wadsworth, PE, Draper Aden Associates
[ Part IV: Additional Contact Information ]
(Optional) Additional Contac'
Person / Orginization
Signing Official & Title
Street address
City, State, Zip
Phone number(s),
Email
Kim Newton
Procurement and Fleet Manager
Bldg ,2-6503 Butner Road- _
Fort Bragg; NC- 28307 -_
Q1'0-:-49&2225-
(Note.
1'0=496,2225
(Note. Person/Organization noted above may be contacted for additional project Information if
applicant cannot be reached.)
I Part V: Consultant Information f
Complete this section if you wish to designate authority to another individual or firm so that they may provide information on your
behalf for this project (such as addressing requests for additional information).
Consultant
Firm
Street address
City, State, Zip
Phone number(s)-
Email
C -Hgafh Wadsworth, PE
Draper Aden Associates
930 Main Campus -Drive; Suite -151` -
Raleigh, NC 27606
919-827=851-2 or Mobile. [phone]_
hwadsworih@c1aa com - = -
6 Part VI: Property Owner /Applicant Certification
I, (the Owner & Applicant listed above),r- KR,?�1r-0WIJ certify that the information included
on this permit applicant form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the
approved plans, that t required deed restrictusion and protective covenants will be recorded, and that the proposed project complies
with the require�t of the applicable state atormwatnules and requirements
Signature !�G[�1.,W�Y�Wt- � �� Date AN --.1Y 6ZZ
or
I, C.
L�� (� . (Jtlt!r7� a Notary Public for the State of A/
Countf CL4lXes)C9yLe-A-A/D do hearby certify that -amu/
personally appeared before me this -ZLkday of , R e I L-
and
and acknowledge the due execution of the appUTtion for a stormwater permit
Witness my hand and official seal, A A. /J
NOTARY e
PIER► IC
-ate _
'!!!l1911it1\\\\
commission expires
//--2- ZOZ I
STORM -EZ 4/26/2017
Version 1 4 Application Page 5 of 17

Parking Lot Expansion for Sandhills Utility Services ���A
(14—
Fort Bragg, NC CUMBERLAND County �� ®
Cape Fear River Basin WDENR
RAINFALL & CALCULATION DATA
Project County: CUMBERLAND
Project City: FortBragg
Rainfall Source: _ Fort Bragg
Loaded Rainiall: Fort Bragg
Design Storm: P90
Calculation Method Discrete SCS Method, -
Pre -_Post - -
(Minimum Design Storm = P90 for non -SA, 1 -yr, 24 -hr for SA)
Storm Event
Depth
(inches)
First Flush / WQV
1 00
P90
1 44
P95
2.06
1 -yr, 24 -hr
306
2 -yr, 24 -hr
370
10 -yr, 24 -hr
546
25 -yr, 24 -hr
652
50 -yr, 24 -hr
738
100 -yr, 24 -hr
826
NOTE Please use the Storm -EZ calculation sheets to document the stormwater design
and create the O&M Agreement Highlighted Storm is Design Storm
PROJECT INFORMATION I
Total Property Area 428 acres
Total Coastal Wetlands Area 0 00 acres
Total Surface Water Area 0 00 acres
Complete the breakdown of impervious area for the project
Basin Information
Entire Site
Receiving Stream name
0
Stream Class
0
Stream Index Number
Total Drainage Area
186,636
On -Site Drainage Area (sf)
186,636
Offsite Drainage Area (sf)
0
Proposed Impervious Area (sf)
128,553
Impervious Area (total)
691/.
Impervious Surface Area
Entire Site
On -Site Buildings/Lots (sf)
_
On -Site Streets (sf)
On -Site Parking (sf)
56,353
On -Site Sidewalks sf)
- -
Other On -Site (sf)
Future sf
Off-site (sf)
Existing BUA (sf)
72,200
Total
128,553
Total Impervious Area 295 1 acres
Project •/ impervious area 69%
ALL AREAS ARE IN SQUARE FEET
Use Worksheet Data Yes
Data in italics is derived from application
forms and /and use data worksheets and
cannot be changed by user
STORM -EZ 4/26/2017
Version 1 4 Project Data Page 6 of 17

Parking Lot Expansion for Sandhills Utility Services
WJ
Fort Bragg, NC CUMBERLAND County r•
Cape Fear River Basin � NCDENR
Drainage Area # I ' � Of I ' 1
i
PRE -DEVELOPMENT LAND USE CALCULATIONS
Pre -Development Land Use: Area
HSG Land -use CN (sf) (acres)
-A A Imnarvm.. 99 73.417 - 1 69 39 34%
Subtotal 1 186,636 1 428
Note Enter BUA Draining to
Permeable Pavement Below
User Defined Drainage Areas: I Comp. 1I Area
HSG Descnotion CN Area (sf.) (ac) %
Existing Permeable Pavement (infiltration):
SCM p Description
Subtotal 1 186,636
Existing Green Roofs:
DSD PAW Dg, Area
DSS Mp Notes
SCM p Description (in) (%) (in) (sf) (acres)
1501 _ - _ 1 44 - - , - - 000
Land Use Summary: Area (sf.)
From Land Use Tables 186,636 4 28 acres
Permeable Pavement +Additional BUA 0 0 00 acres
Green Roofs 0 000 acres
Preserved Surface Waters & Non -Coastal Wetlands 000 acres
Preserved Coastal Wetlands 000 acres
Total Site Area: 166,636 428 acres
Storm
Rainfall Volume =
Sod
Gravel Vold
Total
Orifice
Orifice
Natural Infiltration & ET=
-4 11 acre -Inches =
Pavement Area Additional BUA Infiitrado
Space
Gravel
Dia.
Height
BUA %
Has Synthetic
D S
HSG
n Rate
Permeable Pavement Infiltration =
Depth
o
cf
Green Roof ET =
Liner?
BMP
(Sf) (at) (In/hr)
(%)
(In)
(In)
(I n)
Total Runoff Reduction =
-411 acre -Inches =
-14,926
cf
SCM Treatment:
Treated SCM Outflow =
000 acre -Inches
D
cf
Untreated Surface Runoff =
Existing Green Roofs:
DSD PAW Dg, Area
DSS Mp Notes
SCM p Description (in) (%) (in) (sf) (acres)
1501 _ - _ 1 44 - - , - - 000
Land Use Summary: Area (sf.)
From Land Use Tables 186,636 4 28 acres
Permeable Pavement +Additional BUA 0 0 00 acres
Green Roofs 0 000 acres
Preserved Surface Waters & Non -Coastal Wetlands 000 acres
Preserved Coastal Wetlands 000 acres
Total Site Area: 166,636 428 acres
Storm
Rainfall Volume =
617 acre -Inches =
22,396
cf
Runoff Reduction Components:
Natural Infiltration & ET=
-4 11 acre -Inches =
-14,926
cf
Disconnected Impervious Surfaces =
000 acre -inches =
o
c1
SCM Infiltration =
000 acre -Inches =
o
cf
Permeable Pavement Infiltration =
0 00 acre -Inches =
o
cf
Green Roof ET =
0 00 acre -inches =
o
of
Post Filtration Discharge =
000 acre -Inches =
o
cf
Total Runoff Reduction =
-411 acre -Inches =
-14,926
cf
SCM Treatment:
Treated SCM Outflow =
000 acre -Inches
D
cf
Untreated Surface Runoff =
2.06 acre -inches =
7,471
cf
The Pre -Development project area contains 73417 at of built upon area, resulting in
an overall density
of 39 34%.
STORM -EZ 4/26/2017
Version 1 4 Pre -Development Page 7 of 17

Parking Lot Expansion for Sandhills Utility Services
a Fort Bragg, NC CUMBERLAND County If
Cape Fear River Basin NC®ENR
Drainage Area# 1 of 1
POST -DEVELOPMENT LAND USE CALCULATIONS
Permeable Pavement
SCM If
600
Green Roofs
DSD PAW Do, Area Retrofit? Downstream Comments
SCM# (n) (%) (in) (sf) (acres) SCM#
600 144 - 000 1- No- - --
Residential Lot CN Calculator (Eccludina R/W and dedicated
Land Use
Sub -Total
Area
Land Exofuded, or PartraUy Excluded, from Volume Calculations. (sf) (ac )
Surface Waters & Non Coastal W etlands 0 0 00
Coastal Wetlands 0 o 00
Total Site Area 166,636 4 -
Rainfall Volume= 617 acre -mores = 22,396
Runoff Reduction Components:
Infiltrall Total
Pavement Area AddNonal BUA Vold Space Gravel
Has
Orifice Orifice
Down -
Infiltration
DeterNon
HSG
Pvmt Type
Rate Depth
Synthetic
Dia Height
stream
cf
SCM Infiltration=
-240
acre-inches =
Liner?
SCM
Check
Check
acre-incihes =
0
cf
Green Roof ET =
0 00
acre -inches
0
ci
__A
0 00
000
o
c1
Ote un0 a uction =
-4 96
acre -Inches =
Green Roofs
DSD PAW Do, Area Retrofit? Downstream Comments
SCM# (n) (%) (in) (sf) (acres) SCM#
600 144 - 000 1- No- - --
Residential Lot CN Calculator (Eccludina R/W and dedicated
Land Use
Sub -Total
Area
Land Exofuded, or PartraUy Excluded, from Volume Calculations. (sf) (ac )
Surface Waters & Non Coastal W etlands 0 0 00
Coastal Wetlands 0 o 00
Total Site Area 166,636 4 -
Rainfall Volume= 617 acre -mores = 22,396
Runoff Reduction Components:
Natural Infiltration & ET=
-257
acre-rnchas =
-9,315
cr
Disconnected Impervious Surfaces =
0 00
acre-md,ea =
0
cf
SCM Infiltration=
-240
acre-inches =
-6,695
cl
Permeable Pavement Infiltration =
0 00
acre-incihes =
0
cf
Green Roof ET =
0 00
acre -inches
0
ci
Post Filtration Discharge =
0 00
acre inches =
o
c1
Ote un0 a uction =
-4 96
acre -Inches =
-18,011
C
STORM EZ 4126iZ017
Version 1 4 Post Development Page a of 17

Parking Lot Expansion for Sandhills Utility Services
FortBragg, NC CUMBERLAND County ©t�
la Cape Fear River Basin
NCDENR
Drainage Area # 1 of 1
POST -DEVELOPMENT LAND USE CALCULATIONS
SCM Treatment:
Treated SCMOulllow= 000aore-orches 0 Cf
Untreated Surface Runoff = 1 21 acre4nches = 4,386 cf
Pro -Development Runoff = 2 66 acre orches 7,471 d
Ddlerence = -0 85 xrea h. -3,085 Cf
The Post-Developreerd project area contains 126553 sf of built upon area, resulting In an overall density of 68 86°6
STORM -EZ 4126,2017
Verson 1 4 Post Development Page 9 of 17

Design Storm Runoff Fate Summary.
Parking Lot Expansion for Sandhills Utility Services
Rainfall Volume=
R17 e—ahes =
22,396
et
Runoff Reduction Components
Fort Bragg, NC CUMBERLAND County
Natural infiltration & ET =
857 axe l xlres =
a315
c/
Cape Fear River Basin
000 acle-ircr =
o
of
6
NC®6NR
a40-1?xhaa =
B, r5
Dl alnage Area 4 1 of 1
Permeable Pavement Infiltration =
0 00 acre -laches =
o
c1
t
0 00 acre —hes =
PROPOSED SI Ps & STRUCTURAL RUNOFF VOLUME CONTROLS
of
Post Filtration Discharge =
-
o
cf
Total Runoff Reduction-
-496 vae4nehea=
-18,011
of
SCM Treatment
Enter only runoff volume below that will be Infiltrated or drawn down over 2 to 5 days. Additional volume provided In devices should not be entered In this worksheet
Treated SCMDutflow=
Drawdown time requirement applies to all storm events
0
cl
Untreated Surface Runoff =
121 ar Iretea _
Cffsrte Imparvlous
- -_ - - -- sf
Pre -Development Runoff=
Area Treated
- - - -
cf
STORMWATER CONrROL
MEASURES
-3,085
cl
"VOLUME MATCHING ACHIEVED""
The Post-eavotopment project area contains 12aS53 al of built upan area, rasuhing N
an overall al—Ity of 6888°5
ContrmWn Area
Drabvge
Total
Post
hnpervlous Porvmus --I-- °b of Total Slomge ---
Area -.-
Int low
Inf ltraaon &-tranon
Treated % of SCM
SCM
(a" (.0 enpernous Pernous Vohlme —.SCM
Volume
Valume
ET Outflow
Outflow Volume
# Name I Lavation
Ty of Oev,ca HSG
128,553 58083 Area Area (a6 #
(c�
(m
(m ()
(� Utimed
708 -SCM#1 end C2
InGtlran_n Ueacv - A -
- 57,236`- 11931- 45w, 2J4 5141-' - --
5824
582,1
5424 0
0 75"a
701 SCMC3
Inhrr—D—. A
2B 217 - 15,725 1 229; 1 27% 2465 - -
2871
2871
1 2971 1 0
0 1 78%
85x53 s/ImpsrNaus ae
.-Wed
27656ardospace-1—d 66°„oarai 48'&.1al
wryateYto 128'54s!alipe
m
ppeu
open apace
Design Storm Runoff Fate Summary.
Rainfall Volume=
R17 e—ahes =
22,396
et
Runoff Reduction Components
Natural infiltration & ET =
857 axe l xlres =
a315
c/
Disconnected Impervious Area=
000 acle-ircr =
o
of
SCM In6ltrat—=
a40-1?xhaa =
B, r5
er
Permeable Pavement Infiltration =
0 00 acre -laches =
o
c1
Green Roof ET =
0 00 acre —hes =
0
of
Post Filtration Discharge =
800 acre-rrcnes =
o
cf
Total Runoff Reduction-
-496 vae4nehea=
-18,011
of
SCM Treatment
Treated SCMDutflow=
ao6 acre -[-fres =
0
cl
Untreated Surface Runoff =
121 ar Iretea _
4,386
ct
Pre -Development Runoff=
206aaeiner. =
7,471
cf
Difference=
-o a5 —- =
-3,085
cl
"VOLUME MATCHING ACHIEVED""
The Post-eavotopment project area contains 12aS53 al of built upan area, rasuhing N
an overall al—Ity of 6888°5
Wammga
NO. Letge eiotage desms sud h as w I c y d9— pads, mn9ruGtro —bads, to "M lin bawls mey requr dird mung edoAalions Tbtoulrg caeulal r—ho ld be p,w ed tit addron to fhb apreadshaet
STORM -E2 4,M2017
Vasrn 14 Slarn ga, Conlm6 Page Wel 17

STORM EZ 412N2017
Velson 14 Ranfall Fete Gnph Page 11 of 17
Parking Lot Expansion for Sandhills Utility Services
FortBragg, NC CUMBERLAND County
�A
'�Ar
5
Cape Fear River Basin
NCDENR
Drainage Area: 1 of 1
FATE OF RAINFALL
select Stom1
P9g
BASIC TREATMENT SCALE
Compliance Storm = P90 Storm - Rainfall Depth = 1 44 Inches
Basic Tree-,7hre6hold
VOLUME MATCHING SCALE
P90 Storm - Rainfall Depth = 1 44 Inches
W... MemhlhgTh—hold
FATE OF RAINFALL GRAPHS
Pre Development Fates
Post Development Fates
100%
30A
7-Te
7OM
�
r
- 50X
i° YPa
A°, 406
30%
O
—
0 6
0%
nBltradcnand ET-1492ocf Treated Outllowhom BMF;-Ocf Unveated5,f—Runoff 74714
Infilaatlon and 9-12010d T—,,f0utfl—from BMN Od
Unbaa[edylface Ru-H-4i86cf
o Port Fllo-atlon Ou[flow-0cf
:Pest 51-1 nOutflow-0tf
■Odie
U Inflltretlonby BMP -0d
O Permeable Pavammtlnhl-d -Ocf
•pluronrecNdlmpaHaus lnfiltradan Od
■irem Ruo!Erapoo-an�fratlon-Oc(
Other
■,nFIVabmby WM-E695cf
DP=.rtneable Pavemen[IngiVabm Od
■Qux,nected imp a 1—IMriltraoen-od
eG—Rmf Evapo-a r bon-0cf
The-FUI1
d Ramlail mals d play me byahaage .—b,— basea on IhU cananAwls d lap usq so6lype, Ipttl gerrrM'at, — wl— by No user The mats ae Umu,W 11-;,Uy the
plan
n a farm whch Mugraes chmgm to the hydrologic Cydawhch result Iron mbartWim and—S siarmvela maneganern slialsg-
7
STORM EZ 412N2017
Velson 14 Ranfall Fete Gnph Page 11 of 17

Operation & Maintenance Agreement
Parking Lot Expansion for Sandhills Utility Services
Fort Bragg, NC CUMBERLAND County
Prepared By: C. Heath Wadsworth, PE, Draper Aden Associates
Cover Page `
Maintenance records shall be kept on the following BMP(s). This maintenance record shall 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 pollutant removal efficiency of the BMP(s).
The BMP(s) on this project include (check all that apply &
Bioretention Cell
Quantity.
Dry Detention Basin
Quantity.
Grassed Swale
Quantity.
Green Roof
Quantity
Infiltration Basin
Quantity
Infiltration Trench
Quantity
Level Spreader/VFS
Quantity
Permeable Pavement
Quantity
Proprietary System
Quantity
Rainwater Harvesting
Quantity
Sand Filter
Quantity
Stormwater Wetland
Quantity
Wet Detention Basin
Quantity
Disconnected Impervious Area
Present:
Soil Amendments
Present:
g O&M tables will be added automatically).
Location(s): _
Location(s): _
Location(s):
Location(s): _
Location(s): See Plans-
Location(s): _
Location(s):
Location(s):
Location(s):
Location(s): _
Location(s):
Location(s):
Location(s)-
Location(s)
ocations) Locations)
Location(s). -
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for
each BMP above, and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any changes to
the system or responsible party.
* Responsible Party
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Email;
Katherine Brown
VP Corporate Services - Sandhills-Utility Services
Bldg 2=6503 Butner Road
Fort Bragg, NC 28307 - _-
910-496-2208 -
[e-mail] -
Signature: / Date -
RC—I, (; /l/ a Notary Public for the State of /J/ C -
County of ("lkM Gr4do hearby certify that W)v
personally appeared before me this day of �pgi L 2 0{ % and
acknowledge the due execution of the Opev ions and Mainten nce��Agreement.
Witness my hand and official seal,y: x �,�/� —,
NOTARY
,G PUB L,
Seal"'.;�'` hig cui, .,.
My commission expires
6 2-- ZDz
STORM -EZ 4/26/2017
Version 1 4 O&M Manual Page 1 of 1

Infiltration System Maintenance Requirements
Important maintenance procedures:
- The drainage area will be carefully managed to reduce The sediment load to The infiltration basin
Immediately after the infiltration basin is established, the vegetation will be watered twice weekly if needed until
the plants become established (commonly six weeks).
No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the
vegetation.
The vegetation in and around the basin will be maintained at a height of approximately six inches.
After the infiltration basin is established, it shall be inspected once a quarter and within 24 hours after every storm event greater
than 1.0 inches (or 1.5 inches if in a Coastal County) Records of operation and maintenance shall be kept in a known set
location and shall be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
BMP element:
Potential problem:
How to remediate the problem:
The entire BMP
Trash/debns is present.
Remove the trash/debris
The perimeter of the
Areas of bare sod and/or
Regrade the sod if necessary to remove the gully, and then plant a
infiltration basin
erosive gullies have formed.
ground cover and water until it is established Provide lime and a one-
time fertilizer application.
The inlet device: pipe or
The pipe is clogged (if
Unclog the pipe. Dispose of the sediment off-site
swale
applicable).
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to smooth it over and provide erosion
swale (if applicable).
control devices such as reinforced turf matting or riprap to avoid future
problems with erosion
The forebay
Sediment has accumulated
Search for the source of the sediment and remedy the problem if
and reduced the depth to 75%
possible. Remove the sediment and dispose of it in a location where it
of the original design depth
will not cause impacts to streams or the BMP
Erosion has occurred or riprap
Provide additional erosion protection such as reinforced turf matting or
is displaced
riprap if needed to prevent future erosion problems
Weeds are present.
Remove the weeds, preferably by hand. If pesticides are used, wipe
them on the plants rather than spraying.
The main treatment area
A visible layer of sediment has
Search for the source of the sediment and remedy the problem if
accumulated
possible Remove the sediment and dispose of it in a location where it
will not cause impacts to streams or the BMP. Replace any media that
was removed in the process. Revegetate disturbed areas immediately
Water is standing more than 5
Replace the top few inches of filter media and see if this corrects the
days after a storm event.
standing water problem. If so, revegetate immediately. If not, consult
an appropriate professional for a more extensive repair.
Weeds and noxious plants are
Remove the plants by hand or by wiping them with pesticide (do not
growing in the main treatment
spray).
area
The embankment
Shrubs or trees have started
Remove shrubs or trees immediately.
to grow on the embankment
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose of the sediment off-site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Department of Environment and Natural
damage have occurred at the
Resources Regional Office.
outlet.
STORM -EZ 4/26/2017
Version 1 4 O&M Manual Page 1 of 1

SUPPLEMENT -EZ FORM COVER PAGE
Please indicate the types, quantities and locations of SCMs that will be used on this project
Quantity Location(s)
Infiltration System 3 See Construction Drawings (Labeled as SCM #1, #2, and #3)
Bioretention Cell
Wet Pond
Stormwater Wetland
Permeable Pavement
Sand Filter
Rainwater Harvesting
Green Roof
Level Spreader -Filter Strip
Disconnected Impervious Surface
Treatment Swale
Dry Pond
Designer information for this project:
Name and Title
C Heath Wadsworth, PE - Senior PM
Organization
Draper Aden Associates
Street address.
930 Main Campus Drive, Suite 151
City, State, Zip-
Raleigh, NC 27606
Phone number(s).
919-827-8512
Email
[e-mail]
Designer
Applicant:
RECEIVED
MkJ 18 2017
DENR-LAND QUALITY
STORMWATER PERMITTING
Envlronn,cn
Quality
Project Name:
Parking Lot Expansion for Sandhills Utility
Services
Address
BLDG 2-6503 Butner Road
City / Town
Fort Bragg, NC 28307
Company
Sandhills Utility Services
Contact
Kim Newton - Procurement and Fleet Manager
Mailing Address
Bldg 2-6503 Butner Road
City, State, Zip
Fort Bragg, NC 28307
Phone number(s)
910-496-2225
Email.
lknewton@sandhilisutility com
Cover Page 1 9 24 AM 5/11/2017
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
Y�(� 0 °
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and belief, true, accurate, and complete, and
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Signature o Designer - that the engineering plans, specifications, operation and maintenance
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agreements and other supporting information are consistent with
the information provided here
s� =y4�tfJC7 C1C3'�� y
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am aware that there are significant penalties for submitting false
17 information including the possibility of fines and imprisonment for knowing
Seal
Me violations as well as a report being made to my professional board
Cover Page 1 9 24 AM 5/11/2017

INFILTRATION SYSTEMS Parking Lot Expansion for Sandhills Utility Services
THE DRAINAGE AREA
Drainage area number
SCM #1 and #2
Break down of BUA in the drainage area (both new and existing):
Total coastal wetlands area (sq ft)
No
Parking / driveway (sq ft)
57236 sf
Total surface water area (sq ft)
#9 Does the drainage easement comply with General MDC (9)? Yes
Sidewalk (sq ft)
No
Total drainage area (sq ft)
69167 sf
Roof (sq ft)
#11 Is there an O&M Agreement that complies with General MDC (11)? Yes
BUA associated with existing development (sq ft)
44857 sf-
Roadway (sq ft)
#6 What is the method for dewatering the SCM for maintenance?
Proposed new BUA (sq ft)
12379 sf
Other, please specify in the comment box below (sq ft)
#2 Bottom of the Infiltration system (fmsl) 264 ft
Percent BUA of drainage area
83%
Total BUA (sq ft)
57236 sf
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
Stormwater program(s) that apply (please specify)
Fort Bragg, Millitary - Subject to Phase 11 Post -Construction SW
GENERAL MDC FROM 02H .1050
ign rainfall depth (in) 1 0 in
imum volume required (cu ft) 4770 cf
agn volume of SCM (cu ft) 5147 of
#1 Is the SCM sized to treat the SW from all surfaces at build -out?
Yes
#7 If applicable, with the SCM be cleaned out after construction? Yes
#2 Is the SCM located on or near contaminated soils?
No
#8 Does the mametenance access comply with General MDC (8)? Yes
#3 What are the side slopes of the SCM (H V)?
31
#9 Does the drainage easement comply with General MDC (9)? Yes
#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes?
No
#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)? No
#4 Are the inlets, outlets, and receiving stream protected from erosion (10 -year storm)?
Yes
#11 Is there an O&M Agreement that complies with General MDC (11)? Yes
#5 Is there a a bypass for flows in excess of the design flow?
Yes
#12 Is there an O&M Plan that complies with General MDC (12)? Yes
#6 What is the method for dewatering the SCM for maintenance?
Other
#13 Was the SCM designed by an NC licensed professional? Yes
INFILTRATION SYSTEM MDC FROM 02H .1051
#1 SHWT elevation (fmsl) T>96 -m from surface
#5 Length (ft)
200 ft
#1 Was the soil investigated in the footprint and at the elevation of the infiltration system? Yes
#5 Width (ft)
25 ft
#1 Sod infiltration rate (m/hr) 11 5 in/hr
#5 Depth/Height (ft)
3 ft
#1 Briefly describe the hydraulic properties and characteristics of the soil profile
#5 Surface area of the bottom of the infiltration system (sq feet)
4400 sf
We finally found the sand in the sand hdls These sods are prefect for infiltration They are very sandy with infiltration
rates ranging from 11 5 to 14 1 in/hr To make it every better, the SHWT is consistantly vey deep, there were no issues
with encountering the SHWT (or even getting close) The sod scientist said "you don't find soils much better than these"
Great soils' As a stormwater engineer; if all sites were like this one, I would be out of business
#5 Ponding depth of the design volume (in)
12 in
#5 Estimated dewatering time (hours)
2 hrs
#5 For trenches only Perforated pipe diameter, if applicable (inches)
#2 SHWT elevation (fmsl) Deeper than EL 258
#5 For trenches only Number of laterals
#2 Bottom of the Infiltration system (fmsl) 264 ft
#5 For trenches only Stone type, if applicable
#2 Is a detailed hydrogeologic study attached if the separation is between 1 and 2 feet? No
#5 For trenches only Stone void ratio (%)
#3 Proposed slope of the subgrade surface (%) 0%
#5 For trenches only Is stone free of fines?
#3 Are terraces or baffles provided? No
#5 For trenches only Is the stone wrapped in geotextde fabric?
#4 Describe the pretreatment that will be provided-
#6 Is the infiltration system located underground?
No
The preteatment is stone plunge -pools and sumps
#6 If so, has at least one infiltration port been provided?
'.ADDITIONAL INFORMATION
(Please use this space to provide any information about this infiltration system that you think is relevant to the review
Infiltration 1 9:25 AM 5/11/2017

INFILTRATION SYSTEMS
Parkinq Lot Expansion for Sandhills Utility Services
THE DRAINAGE AREA
Drainage area number
SCM #3
Break down of BUA in the drainage area (both new and existing).
Total coastal wetlands area (sq ft)
Parking / driveway (sq ft)
28217 sf
Total surface water area (sq ft)
Sidewalk (sq ft)
Total drainage area (sq ft)
43942 sf
Roof (sq ft)
BUA associated with existing development (sq ft)
- Roadway (sq ft)
Proposed new BUA (sq ft)
28217 sf
Other, please specify in the comment box below (sq ft)
Percent BUA of drainage area
64%
Total BUA (sq ft)
28217 sf
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
Stormwater programs) that apply (please specify)
Design rainfall depth (in)
1 0 in
Fort Bragg, Mtllitary - Subject to Phase II Post -Construction SW
Minimum volume required (cu ft)
2350 cf
Design volume of SCM (cu ft)
2465 cf
[GENERAL MDC FROM 02H.'1050
#1 Is the SCM sized to treat the SW from all surfaces at build -out?
Yes
#7 If applicable, with the SCM be cleaned out after construction?
Yes
#2 Is the SCM located on or near contaminated soils?
No
#8 Does the mainetenance access comply with General MDC (8)?
Yes
#3 What are the side slopes of the SCM (H V)?
3 1
#9 Does the drainage easement comply with General MDC (9)?
Yes
#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes?
No
#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?
No
#4 Are the inlets, outlets, and receiving stream protected from erosion (10 -year storm)?
Yes
#11 Is there an O&M Agreement that complies with General MDC (11)?
Yes
#5 Is there a a bypass for flows in excess of the design flow?
Yes
#12 Is there an O&M Plan that complies with General MDC (12)?
Yes
#6 What is the method for dewatering the SCM for maintenance?
Other
#13 Was the SCM designed by an NC licensed professional?
Yes
INFILTRATION SYSTEM MDC FROM 02H.1051
#1 SHWT elevation (fmsl)
Deeper than EL 252 #5 Length (ft)
60 ft
#1 Was the soil investigated in the footprint and at the elevation of the infiltration system?
Yes
#5 Width (ft)
35 ft
#1 Soil infiltration rate (in/hr)
11 5 in/hr
#5 Depth/Height (ft)
2 ft
#1 Briefly describe the hydraulic properties and characteristics of the sod profile
#5 Surface area of the bottom of the infiltration system (sq feet)
2315 sf
We finally found the sand in the sandhills These sods are prefect for infiltration They are very sandy with infiltration
rates ranging from 11 5 to 14 1 m/hr To make it every better, the SHWT is consistantly very deep, there were no issues
with encountering the SHWT (or even getting close) The soil scientist said "you don't find sods much better than these"
#5 Ponding depth of the design volume (in)
#5 Estimated dewatering time (hours)
#5 For trenches only Perforated pipe diameter, if applicable (inches)
12 in
2 hrs
#2 SHWT elevation (fmsl)
252 ft
#5 For trenches only Number of laterals
#2 Bottom of the Infiltration system (fmsl)
260 ft
#5 For trenches only Stone type, if applicable
#2 Is a detailed hydrogeologic study attached if the separation is between 1 and 2 feet?
No
#5 For trenches only Stone void ratio (%)
#3 Proposed slope of the subgrade surface (%)
0%
#5 For trenches only Is stone free of fines?
#3 Are terraces or baffles provided?
No
#5 For trenches only Is the stone wrapped in geotextile fabric?
#4 Describe the pretreatment that will be provided
#6 Is the infiltration system located underground?
No
The preteatment is stone plunge -pools and sumps
1#6 If so, has at least one infiltration port been provided?
ADDITIONAL INFORMATION
Please use this space to provide any information about this infiltration system that you think is relevant to the review
Infiltration 1 9 26 AM 5/11/2017

5/11/2017
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Corporations Division
North Carolina
Elaine F Marshall u EPAR T M E NT OF THE
Secretary SECRETARYOFSTATE
PO Box 29622 Raleigh, NC 27626-0622 [phone]
View Document Filings File an Annual Report Amend a Previous Annual Report
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Corporate Blames
Legal: Sn,ntn,W I I S:� _ r._ ilii; -R'aI:CES,_LL-�C
Limited Liability Company Information
Sosld:
0520818
Status:
Current -Active
Annual Report Status:
Current
Citizenship:
Domestic
Date Formed:
2/18/2000
Fiscal Month:
December
Registered Agent:
Brown, Jeffery R
Corporate Addresses
Principal Office-
2-6503 Butner Road
Fort Bragg, NC 28307
Reg Office.
2-6503 Butner Road
Fort Bragg, NC 28307
Reg Mailing.
PO Box 72858
Fort Bragg, NC 28307
Mailing.
PO Box 72858
Fort Bragg, NC 28307
Company Officials
All LLCs are managed by their managers pursuant to N.C.G.S. 57D-3-20.
Manager: Jeffery R Brown
PO Box 72858
Fort Bragg NC 28307
Manager:E�a�therine ' rZb�wn
PO ox 28
Fort Bragg NC 28307
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