SW6200301_SWU APPLICATION_COMBINED_3/18/2020

LOSE
DESIGN
SPACES FOR LIFE.
POST CONSTRUCTION STORMWATER MANAGEMENT PLANS
FORT BRAGG WILLOW LAKE
FORT BRAGG, NORTH CAROLINA
LD #18165
FEBRUARY 2020
Prepared for:
Stellar Group, Inc.
2900 Hartley Road
Jacksonville, FL 32257
Contact Person: Tony Lamell
Phone #: [phone]
Prepared by:
Lose Design
2809 Foster Avenue
Nashville, Tennessee 37210
[phone]
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LOSE DESIGN 1 2809 FOSTER AVENUE NASHVILLE, TN 37210 1 615.242.0040
www.lose.design

LOSE
DESIGN
SPACES FOR LIFE.
TABLE OF CONTENTS
1) Post Construction Stormwater Application
2) Project Summary
3) Site Maps
a) USGS Map
b) Existing Watershed Map
c) Proposed Watershed Map
d) Vegetated Conveyances Watershed Map
e) Culvert Watershed Map
4) Hydrology Report
a) Vegetated Conveyances Calculations
b) Pipe Chart
c) Hydroflow Pipe Calculations
d) Outlet Protection Calculations
5) EISA Section 438 Implementation
LOSE DESIGN 1 2809 FOSTER AVENUE NASHVILLE, TN 37210 1 615.242.0040
www.lose.design

LOSE
DESIGN
SPACES FOR LIFE.
2.0 PROJECT SUMMARY
Existing Conditions
The subject property is in Fort Bragg at the old Willow Lakes Golf Course. The site is
now covered with volunteer woody vegetation and some existing large stands of trees,
predominantly pines. Current conditions consist of an existing baseball field,
woodland, golf paths, and grass areas. There is no evidence of significant erosion
under present site conditions in the vicinity of the areas being developed. The site has
rolling topography sloping generally at 3%-10% and drains North East towards Tank
Creek and Little River. The site has been situated to save to the maximum extent
possible existing vegetation and large stands of trees as well as existing wetland and
stream buffer areas.
The Natural Resources Conservation Service (MRCS) Soil Survey of Cumberland
County indicates that the soils present within the construction area consist of Blaney
loamy sand (BaD), Blaney -Urban land complex (BdD), and Wagram-Urban land
complex (WgB). Wagram soils are considered well drained with permeability rates
greater the 6 inch/hour. The surface is loamy sand, —8" thick. The subsurface is loamy
fine sand at —8-24 inch, sandy clay loam at —24-75 inches and sandy loam at 75 to 83
inches layer.
Project Description
This project involves converting an existing baseball field into a softball field and adding
three new adjacent softball fields, a small restroom building and a semi -pervious gravel
parking lot. In addition to the softball fields the project will also include the addition of
8 differing sized soccer fields, an additional small semi -pervious gravel parking lot and
a restroom building. Approximately 33 acres will be disturbed during the construction
period.
The existing ballfield and surrounding area were previously covered under a state
stormwater management permit for low density development SW6160902 titled Fort
Bragg MLB Event Stadium dated September 19, 2016. This permit covered the
construction of 91,248 square feet of built upon area. As part of this project portions of
the existing built upon area will be removed leaving 79,279 square feet of existing built
upon area to remain. The new built upon area including the remaining existing built
upon area total is 313,632 square feet with a total project area of 37 acres (1,611,720
square feet) resulting in a project percent of impervious area of 20%. The design
standards listed in the existing permit are being upheld for a low density development.
Proposed Site Drainage
This is a low -density project having a built upon area less than 24% with minimal
stormwater piping per Rule 15A NCAC 02H.1003(2) and NCDEQ Stormwater Design
LOSE DESIGN 1 2809 FOSTER AVENUE NASHVILLE, TN 37210 1 615.242.0040
www.lose.design

LOSE
DESIGN
SPACES FOR LIFE.
Manual Section E-1. Drainage for the site is conveyed via surface sheet flow from
sports fields and grassed channels with minimal piping around walking trails and
sidewalks. The proposed vegetated conveyances have been designed per NCDEQ
requirements (see corresponding watershed map and calculations) and are shown to
provide adequate capacity to convey discharges from the site for the 10-year storm.
Pipe outfall flow is being dissipated via outlet protection and remaining stormwater
outfalls have been designed to produce non -erosive velocities where they leave the
limits of construction.
LOSE DESIGN 1 2809 FOSTER AVENUE NASHVILLE, TN 37210 1 615.242.0040
www.lose.design

DEMLR USE ONLY
Date Received
Fee Paid
Permit Number
Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ Mgmt Plan:
State of North Carolina
Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
WILLOW LAKES SPORTS COMPLEX PHASE II (PN 86271)
2. Location of Project (street address):
REILLY ROAD/ ARMISTEAD STREET
City:FORT BRAGG County:CUMBERLAND Zip:28310
3. Directions to project (from nearest major intersection):
FROM THE INTERSECTION OF REILLY AND BUTNER ROAD, HEAD NORTH ON REILLY ROAD TO
THE SITE ENTRANCE.
FROM THE INTERSECTION OF ARMISTEAD STREET AND BUTNER ROAD. HEAD NORTH ON
ARMISTEAD STREET TO THE SITE ENTRANCE.
4. Latitude:35° 9' 45.86" N
Longitude:79' 0' 7" W
of the main entrance to the project.
II. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ❑New ®Modification ❑ Renewal w/ Modificationt
tRenewals with modifications also requires SWU-102 - Renewal Application Form
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit numberSW6160902 , its issue date (if known) 9/19/2016 , and the status of
construction: ❑Not Started ❑Partially Completed* ® Completed* *provide a designer's certification
2. Specify the type of project (check one):
®Low Density ❑High Density ❑Drains to an Offsite Stormwater System ❑Other
3. If this application is being submitted as the result of a previously returned application or a letter from
DEMLR requesting a state Stormwater management permit application, list the stormwater project number,
if assigned, and the previous name of the project, if different than currently
proposed,
4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major
®Sedimentation/Erosion Control: 33 ac of Disturbed Area
❑NPDES Industrial Stormwater 0404/401 Permit: Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit:
5. Is the project located within 5 miles of a public airport?
®No ❑Yes
Form SWU-101 Version Oct. 31, 2013 Page 1 of 6

If yes, see S.L. 2012-200, Part VI: http://portal.ncdenr.org/web/lr/rules-and-regulations
III. CONTACT INFORMATION
1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project):
Applicant/Organization:Directorate of Public Works (DPW)
Signing Official & Title:Mr. David A. Heins, Environmental Division Chief (DPW)
b. Contact information for person listed in item 1a above:
Street Address:4300 Butner Road
City:Fort Bragg
Mailing Address (if applicable):2175 Reilly Road Stop A
State:NC
Zip:28310
City:Fort Bragg State:NC Zip:28310-5000
Phone: (910 ) 396-8207 Fax: (910 ) 907-2420
Email:
Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/Organization:
Signing Official & Title:
b. Contact information for person listed in item 2a above:
Street Address:
City:
Mailing Address (if applicable):
State:
Zip:
City: State: Zip:
Phone: ( ) Fax: ( )
Email:
3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization:Mr. Lee Ward
Signing Official & Title:Water Management Section Chief (DPW)
b. Contact information for person listed in item 3a above:
Mailing Address:2175 Reilly Road Stop A
City:Fort Bragg State:NC Zip:28371
Phone: (910 ) 908-5286 Fax: (910 ) 907-2420
Email:[e-mail]
4. Local jurisdiction for building permits: Federal
Point of Contact: Phone #: ( )
Form SWU-101 Version Oct. 31, 2013 Page 2 of 6

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
LOW DENISITY WITH VEGETATED CONVEYANCES
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUD Approval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW -1995 ❑ Ph II - Post Construction
3. Stormwater runoff from this project drains to the CAPE FEAR River basin.
4. Total Property Area: 37 acres 5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area+: 37 acres
+ Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water (NHK) line or Mean High Water
(MHW) line, and coastal wetlands landward from the NHW (or MHKq line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHM line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 12 %
9. How many drainage areas does the project have?1 (For high density, count I for each proposed engineered
stormwater BMP. For low density and other projects, use I for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Basin Information
Drainage Area 1
Drainage Area _
Drainage Area _
Drainage Area _
Receiving Stream Name
TANK CREEK
Stream Class *
C
Stream Index Number *
18-23-27
Total Drainage Area (sf)
1611720
On -site Drainage Area (so
1611720
Off -site Drainage Area (sf)
0
Proposed Impervious Area** sf
145090
% Impervious Area** total
4.26
Impervious' Surface Area
Drainage Area 1
Drainage Area _
Drainage Area _
Drainage Area _
On -site Buildings/Lots (so
2,352
On -site Streets (sf)
0
On -site Parking (sf)
59055
On -site Sidewalks (so
94960
Other on -site (so
0
Future (sf)
0
Off -site (sf)
0
Existing BUA*** (so
31790
Total (so:
1 185805
* Stream Class and Index Number can be determined at: http.aortal.ncdenr.org web/wq&s/csu/classi cations
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version Oct. 31, 2013 Page 3 of 6

'Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that
is to be removed and which will be replaced by new BUA.
11. How was the off -site impervious area listed above determined? Provide documentation. NO OFFSITE
IMPERVIOUS AREA HAS BEEN USED IN THE IMPERVIOUS AREA CALCULATIONS
Proiects in Union Coup: Contact DEMLR Central Office staff to check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per 15A NCAC 02B .0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from h!!p://pOTtal.ncdenr.ELrg/web/­wq/ws/su/bMp-manual.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Energy, Mineral and
Land Resources (DEMLR). A complete package includes all of the items listed below. A detailed application
instruction sheet and BMP checklists are available from
http://Rortal.ncdenr.org/web/wq/ws/su/statesw/form"ocs. The complete application package should be
submitted to the appropriate DEMLR Office. (The appropriate office may he found by locating project on the
interactive online map at http://portal.ncdenr.org/web/wq/ws/su/malls.)
Please indicate that the following required information have been provided by initialing in the space provided
for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions
for each submitted application package from http:// partalmcdenr.org/ web/ wq/ws/su/statesw/forms dots.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form. _lam
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants Al
Form. (if required as per Part VII below)
3. Original of the applicable Supplement Form(s) [sealed, signed and dated) and O&M
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
h www.envhel .or a es ones ex ress.htznl for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
5. A detailed narrative (one to two pages) describing the stormwater treatment/management for
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the VA
receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the
mile radius on the map.
7. Sealed, signed and dated calculations (one copy). to
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: Or
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines_
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/ project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
1. Details of roads, drainage features, collection systems, and stormwater control measures.
m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
Form SWU-101 Version Oct. 31, 2013 Page 4 of 6

o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required). 11-1
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"xll" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule a site visit far DEMLR to verifij the 5HVVT prior
to submittal, [phone].)
10. A copy of the most current property deed. Deed book: Page No: N N
11. For corporations and limited Iiability corporations (LLC): Provide documentation from the NC N1 A
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item la, 2a, and/or 3a per 15A NCAC 2H.1003(e).
The Corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
h www.secreta .state.nc.us Cor orations CSearch.as x
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sires vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be
provided as an attachment to the completed and notarized deed restriction form. The appropriate deed
restrictions and protective covenants forms can be downloaded from http:1112ortal.ncdenr.orglweblirlstate-
stormwater-forms does. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, that the covenants will be binding on all parties and persons claiming
under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the NC DEMLR, and that they will be recorded prior to the sale of any lot.
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer:JASON MILES
Consulting Firm: LOSE DESIGN
Mailing Address:2809 FOSTER AVENUE
City:NASHVILLE
Phone: [phone]
Emai1:JMILES@LOSE. DEIGN
State:TN
Fax:
Zip:37210
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or hjpe name of person listed in Contact Information, item 2a) , certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item 1a) with (print or type name of organization listed in
Contact Information, item 1a) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system.
Form SWU-101 Version Oct. 31, 2013 Page 5 of 6

As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity Iisted in Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DEMLR Stormwater permit reverts back
to me, the property owner. As the property owner, it is my responsibility to notify DEMLR immediately and
submit a completed Name/Ownership Change Form within 30 days; otherwise 1 will be operating a stormwater
treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility
without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement
action including the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Signatu
a Notary Public for the State of
do hereby certify that
before me this _ day of
Date:
County of
personally appeared
. and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
61104111
My commission expires
X. APPLICANT'S CERTIFICATION
I, (print or hjpe nanle of person Iisted in Contact Inforprtation, item 1a) David A. Heins ,
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of the
applicable st ter ru u der A NCAC 21-1,1000 and any other applicable state stormwater rrequirements.
Signature: �l/i.�-.� Date: 4/
I, a Notary Public for the State of . County of
do hereby certify that personally appeared
before me this day of - . and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission expires
Fonn 9WU-101 Version Oct. 31, 2013 Page 6 oF6

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
Pro ect Name
FORT BRAGG WILLOW LAKES RECREATION AREA
'ro'ect Area ac
37
Coastal Wetland Area ac
0
4
Surface Water Area ac
0
5
Is this ro'ect High or Low Density?
Low
6
Does this project use an off -site SCM?
No
COMPLIANCE WITH 02H.1003(4)
7 lWidth of vegetated setbacks provided feet
30
8 lWill the vegetated setback remain vegetated?
Yes
9 1 Is BUA other that as listed in .1 0034 c-d out of the setback?
Yes
10 Is streambank stabilization proposed on this project?
No
NUMBER AND TYPE OF SCMs:
11 1
Infiltration System
0
12
Bioretention Cell
0
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
Disconnected Impervious Surface DIS
0
21
Treatment Swale
0
22
Dry Pond
0
23
StormFilter
0
24
ISilva Cell
0
titer
0
-llterra
0
FORMS LOADED
(DESIGNER CERTIFICATION
27
Name and Title:
Mike W re, PE
28
Or anization:
Lose Design
29
Street address:
2809 Foster Ave.
30
Ci , State Zip:
Nashville, TN 37210
31
Phone numbers :
Email:
615-242-0040
32
[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.
Designer
C A Rn ••rig
SEAL
031325
x,r, f EL 0
S nature of Designer
Date

DRAINAGE AREAS
1
Is this a high density project?
No
2
If so, number of drainage areas/SCMs
0
3
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
4
Type of SCM
LOW DENSITY
5
Total BUA in project (sq ft
185805 sf
6permitting)
New BUA on subdivided lots (subject to
s ft
NA
7permitting)
New BUA outside of subdivided lots (subject to
sf
156367 sf
8
Offsite - total area (sq ft
NA
9
1Offsite BUA (sq ft
NA
10
Breakdown of new BUA outside subdivided lots:
Parking (sq ft
59055 sf
Sidewalk (sq ft
94960 sf
Roof (sq ft
2352 sf
Roadway s ft
Future (sq ft
Other, please specify in the comment box
below (sq ft
11
New infiltrating permeable pavement on
subdivided lots (sq ft
NA
12
New infiltrating permeable pavement outside of
subdivided lots (sq ft
NA
13permitting)
Exisitng BUA that will remain (not subject to
s ft
31790 sf
14
Existina BUA that is already permitted (sq ft
8831 sf
15
Existing BUA that will be removed (sq ft
117612 sf
16
Percent BUA
12%
17
Design storm inches
6 in
18
Design volume of SCM cu ft
NA
19
Calculation method for design volume
NA
ADDITIONAL INFORMATION
20
Please use this space to provide any additional information about the
drainage area(s):

LOW DENSITY
DESIGN
REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H .1003
1
Is project below density thresholds set forth in the applicable stormwater rule?
Yes
2
Does project maximize dispersed flow and minimize channelization of flow?
Yes
3
Has the use of piping been minimized per. 1003(2)(c)?
Yes
4
Side slopes of the vegetated conveyances (H:V)
3
5
Maximum velocity in the vegetated conveyances during the 10-year storm?
No
6
Are curb outlet swales proposed?
No
7
Maximum longitudinal slope of curb outlet swale(s) (%)
8
Bottom width of curb outlet swale(s) (feet)
9
Maximum side slope of curb outlet swale(s) (H:V)
10
Minimum length of curb outlet swale(s) (feet)
11
Are treatment swales used instead of curb outlet swales?
Yes
12
Is stormwater released at the edge of the setback as dispersed flow?
Yes
13
Have stormwater outlets been designed to prevent downslope erosion?
Yes
14
Are variations to rule .1003 proposed?
No
ADDITIONAL INFORMATION
15
1 Please use this space to provide any additional information about this low density project:

LOSE
DESIGN
SPACES FOR :-i=E.
Section 3 — Site Maps
LOSE DESIGN 1 2809 FOSTER AVENUE NASHVILLE, TN 37210 1 615.242.0040
www.lose.design

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m 1 .ice K RI�
41 0� 1
*mmm
I,I ■
® 16
IN !
USGS QUAD MAP
FORT BRAGG
t
i
0 1000 2000 3000
SCALE: 1" =1000'
NOT FOR
CONSTRUCTION
© 2018 LOSE DESIGN

EXISTING WATERSHED 1
DA=16 AC
X IMPERVIOUS AREA= 2.70 AC
WOODS= 5.30 AC
GRASS= 8.00 AC
C N =44
LOSE
DESIGN
SPACES FOR LIFE.
EXISTING WATERSHED 2
DA= 17 AC
X IMPERVIOUS AREA= 0.72 AC
WOODS= 10 AC
GRASS=6.28
CN=44
v
ss ss
ss ss
0
vn
sS ss
\ ss
w/
J
EXISTING WATERSHED MAP
FORT BRAGG
SCALE: 1" = 250'
NOT FOR
CONSTRUCTION
© 2018 LOSE DESIGN

PROPOSED WATERSHED 2
DA= 17 AC
X IMPERVIOUS AREA= 0.37 AC
PR IMPERVIOUS= 1.23 AC
GRASS= 14.40
WOODS= 1 AC
CN=43
PROPOSED WATERSHED
DA= 16 AC
X IMPERVIOUS AREA=0.35 AC
PR IMPERVIOUS AREA= 2.30 AC
GRASS= 13.35
CN= 42
LOSE
DESIGN
SPACES FOR LIFE.
0
kk
lig
SS SS
SS�SS
N
W/
U 55T I— �5 1
I I
PROPOSED WATERSHED MAP
FORT BRAGG
Em
ILI
SCALE: 1" = 250'
NOT FOR
CONSTRUCTION
© 2018 LOSE DESIGN

CONVEYANCE 3
DA= 2.67 AC
LOSE
DESIGN
SPACES FOR LIFE.
- ss
ss
ss �
ss-ss-
ss-ss-ss,
,AA
_ i / I —A—
,A i
2 CONVEYANCE 4
DA= 0 61 AC `— CONVEYANCE 2
1 I �
I
1 —I— ss i
I �
CONVEYANCE 1 l
\ \ DA= 8.01 AC \ \ 1 \ I
\ O
\ �
6;
0 150 300 450
SCALE: 1" = 150'
0
.'CMM$-s � /
� coloo—
�
rl
CONVEYANCE 15 �,
DA= 0.77 AC
� 1
w^
CONVEYANCE 6
DA= 0.19 AC
IT1'''
c�P
CONVEYANCE 7
DA= 0.606 AC
CONVEYANCE 5 m SSA ASS
\ Ss
DA= 0.87 AC
0� 0
S �
1
\ �lool
\ 0
\ 1 0
0
�i.
CONVEYANCE 9
DA= 0.05 AC w G
i
�II
y
CONVEYANCE 13 \�
DA= 0.09AC
:YANCE 11
%= 0.03 AC
VEGETATED CONVEYANCES WATERSHED MAP
FORT BRAGG
-ss ss -ss�
CONVEYANCE 10
� DA= 0.51 AC
CONVEYANCE 12
"(,\
DA= 0.05 AC
s\ 0
ti
0 150 300 450
I s i s SCALE: 1" = 150'
NOT FOR
CONSTRUCTION
© 2018 LOSE DESIGN

LOSE
DESIGN
SPACES FOR LIFE.
c/o
M MS MS MS
oo
�o SS SS\
/ SS
SS ASS
SS
HEADWALL D 1
DA= 0.41 ACCIS
I /fl/ � � . f s� w
0
i i�\ I �� I0\w
w
S
i \\ I \ I o
JII 111 I ( / ` l
0
o w
VA
\ I I \ \
H EADWALL 131 0 o
DA= 0.12 AC
n \
X,�
A
�IIIII II I \ I I l o
` HEADWALL Al -
\ DA= 0.04 AC
U1 /\
HEADWALL WATERSHED MAP
FORT GG
000
HEADWALL F1
DA= 0.91 AC
—
\ \ \ 21AT `BEAC� NUTON FI RKAT
Wv UTONRERYORANT
O W/ALUM/NUMTAGk30606
ELE✓A770N 234.30'
OAK
14
o
w
1
- SS
- SS
ss
rwi
0 100 200 300
SCALE: 1" = 100'
NOT FOR
CONSTRUCTION
© 2018 LOSE DESIGN

LOSE
DESIGN
SPACES FOR :-i=E.
Section 4 — Hydrology
LOSE DESIGN 1 2809 FOSTER AVENUE NASHVILLE, TN 37210 1 615.242.0040
www.lose.design

LOSEVEGETATED CONVEYANCE CALCULATIONS
PROJECT:FORT BRAGG RAINFALL DATA: FORT BRAGG
DESIGN PROJECT#: 18165 DESIGN STORM 10-YEAR
SPACES FOR LIFE.
Swale #
Drainage
Area (acres)
Runoff
Coefficient
Time of
Concentration
(min)
Rainfall
(in/hr)
Runoff
(cfs)
Channel
Lining
Channel
Shape
Manning's
(n)
Channel
Length
(ft)
Channel
Slope
Bottom
Width
(ft)
Side
Slope
(Z:1)
Channel
Depth
(ft)
Water Depth
in Channel
(ft)
Channel
Capacity
(cfs)
Velocity
(fus)
1
8.01
0.40
5
7.91
25.34
MATTING
TRAPEZOIDAL
0.025
1473
1.0%
3.5
3.0
1.00
0.93
25.6
4.33
2
1.38
0.50
5
7.91
5.46
MATTING
TRAPEZOIDAL
0.025
283
1.5%
4
3.0
1.00
0.32
34.6
3.44
3
2.67
0.60
5
7.91
12.67
MATTING
TRAPEZOIDAL
0.025
410
1.5%
4
3.0
1.00
0.56
34.6
3.98
4
0.61
0.55
5
7.91
2.65
MATTING
TRAPEZOIDAL
0.025
205
1.5%
4
3.0
1.00
0.25
34.6
3.09
5
0.87
0.43
5
7.91
2.96
MATTING
TRAPEZOIDAL
0.025
215
1.0%
4
3.0
1.00
0.35
28.3
2.38
6
0.19
0.55
5
7.91
0.83
1 MATTING
TRAPEZOIDAL
0.025
280
1.5%
1 3
3.0
1.00
0.14
28.2
1.73
7
0.61
0.55
5
7.91
2.65
MATTING
TRAPEZOIDAL
0.025
148
2.0%
4
3.0
1.00
0.22
40.0
2.58
9
0.05
0.55
5
7.91
0.22
MATTING
TRAPEZOIDAL
0.025
136
3.5%
2
3.0
1.00
0.07
33.5
1.42
10
0.51
0.55
5
7.91
2.22
MATTING
TRAPEZOIDAL
0.025
480
1.0%
4
3.0
1.00
0.16
28.3
3.1
11
0.03
0.55
5
7.91
0.13
MATTING
TRAPEZOIDAL
0.025
96
2.3%
2
3.0
1.00
0.06
27.1
1.00
12
0.05
0.43
5
7.91
0.17
MATTING
TRAPEZOIDAL
0.025
95
1.0%
3
3.0
1.00
0.07
23.0
0.76
13
0.09
0.43
5
7.91
0.31
MATTING
TRAPEZOIDAL
0.025
148
1.5%
2
3.0
1.00
0.31
21.9
2.40
15
0.77
0.55
5
7.91
3.35
MATTING
TRAPEZOIDAL
0.025
205
1.5%
1.5
3.0
1.00
0.41
18.9
3.00

STORM SEWER CALCULATIONS
LOS
PROJECT: FORT BRAGG RAINFALL DATA: FORT BRAGG
MESIGN PROJECT #: 18165 DESIGN STORM: 25-YEAR
SPACES FOR LIFE
FROM
TO
INVERT
ELEV.
SLOPE
%
LENGTH
FT.
DIAMETER
INCHES
PIPE
TYPE
STRUCTURE TYPE
UPPER
LOWER
Al
HEADWALL
Al
A2
230.04
229.90
1.00
14.00
12.00
RCP
A2
HEADWALL
B1
HEADWALL
Bl
B2
225.76
222.00
4.00
93.98
12.00
RCP
B2
HEADWALL
D1
HEADWALL
Dl
D2
209.64
209.50
1.00
14.00
12.00
RCP
D2
HEADWALL
F1
HEADWALL
F1
F2
221.89
220.50
2.06
67.57
12.00
RCP
F2
HEADWALL

MyReport
Page 1
Line
Line
Line
Line
Line
Flow
Capac
Gutter
Invert
Invert
HGL
HGL
Gnd/Rim
Gnd/Rim
Cover
Cover
No.
ID
Length
Size
Slope
Rate
Full
Spread
Dn
Up
Dn
Up
El Dn
El Up
Dn
Up
(ft)
(in)
M
(cfS)
(cfS)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
1
Al -A2
14.000
12
1.00
0.16
3.86
....
229.90
230.04
230.10
230.21 j
232.00
232.00
1.10
0.96
2
131-132
93.980
12
4.00
0.49
7.72
....
222.00
225.76
223.09
226.05 j
224.00
228.00
1.00
1.24
3
D1-D2
14.000
12
1.00
1.69
3.86
....
209.50
209.64
221.44
221.47
212.00
212.00
1.50
1.36
4
F 1-F2
67.570
12
2.06
3.75
5.53
....
220.50
221.89
221.10
222.71
223.00
224.00
1.50
1.11
Project File: 18165_STORM.stm
Number of lines: 4
Date: 12/11/2019
NOTES: "Critical depth
Storm Sewers

LOSERIP
DESIGNPROJECT
SPACES FOR LIFE.
RAP APRON CALCULATIONS
PROJECT: FORT BRAGG RAINFALL DATA: FORT BRAGG
#: 18165 DESIGN STORM: 25-YEAR User Input
Calculated
CULVERT
FLOW
RATE,
Q (cfs)
WIDTH OF
CULVERT, We (in.)
LENGTH OF
RIPRARP APRON, L (ft.)
MIN. WIDTH OF RIPRAP
APRON AT START, 3Wc (ft.)
WIDTH OF RIPRAP
APRON AT END, WA (ft.)
MEDIAN RIPRAP
SIZE, D50 (in.)
DEPTH OF RIRAP
APRON, DA (in.)
A2
0.16
12
7.00
3.00
8.00
2.50
5.63
132
0.49
12
7.00
3.00
8.00
2.50
5.63
D2
1.69
12
7.00
3.00
8.00
2.50
5.63
F2
3.75
12
7.00
3.00
8.00
2.50
5.63
SB 1
27.00
24
15.00
6.00
17.00
6.00
13.50

LOSE
DESIGN
SPACES FOR LIFE.
Section 5 - EISA Section 438 Implementation
Per UFC 3-210-10 this project does not meet the applicability requirements for EISA
Section 438, criteria and design standards for federal agencies, based on the following
condition "The project does not include construction or expansion of one or more
buildings as part of its primary scope (i.e., primary facilities vice supporting facilities).
Small restroom buildings being constructed within this project as ancillary features
with the primary project function being an exterior park. In keeping with the goal of
EISA Section 438 and the "extent practical" LID techniques are being incorporated
into this project by its nature. These LID techniques include numerous vegetated
swales, flow dispersion to natural preservation areas, vast amounts of pervious
vegetation and pervious walking trails. Applicable design calculations are provided for
stormwater techniques in prior sections of this post construction stormwater
management plan.
Represented below are calculations which show the nature of the project meets the
post construction goals to mitigate stormwater runoff for the project without the use of
structural LID practices.
EISA Design Water Volume
Option 1 to retain the 95th percentile storm event was chosen. Rainfall data for the past
30 years at Fort Bragg was obtained from NOAA's website. By following Section E of
EISA 438, the 951h percentile rainfall event was found to be 1.8".
Approved Methodology
TR55 runoff method was used to calculate curve numbers for our site. The site was
split into two watersheds, one for the softball fields area and the other for the multi-
use area. Both watersheds in the existing conditions contain fair condition wooded
areas with slight amounts of impervious areas. In the post development watersheds,
some of the fair woods and impervious area remained. In both proposed watersheds,
there was a small increase in impervious area and a much larger increase in good
condition grass, typical of a well -maintained sports facility. Good condition grass
comes from all the new sports fields being of higher quality dense vegetated cover.
Most of the impervious area for both watersheds are considered unconnected. This is
because in the post conditions, the impervious area travels through pervious areas and
vegetated swales before exiting the site. The pervious trails for the multi -use fields are
also considered disconnected due to their locations on the project. Figure 2-4 in the
Urban Hydrology for Small Watersheds TR55 manual, was used to determine the
adjusted curve number for disconnected pavement. Table 1.0 below shows the curve
numbers for both watersheds in the existing and proposed conditions.
LOSE DESIGN 1 2809 FOSTER AVENUE NASHVILLE, TN 37210 1 615.242.0040
www.lose.design

LOSE
DESIGN
SPACES FOR LIFE.
Table 1.0-Curve Numbers
LAND USE
EX
PR
SURFACE TYPE
AREA (AC)
CN
AREA (AC)
CN
WOODS
15.3
43
1
43
GRASS
14.28
39
27.76
39
IMPERVIOUS
1.39
98
2.15
98
DIRT
2.03
76
2.04
76
WEIGHTED AVG=
42
45
DISCONNECTED PAVEMENT
ADJUSTMENT=
43
Per Table 1.0 above, the proposed conditions CN for the softball field and multi -use
fields watersheds are 44 and 43, respectively. Using Table 2-1 in the TR55 manual
which quantifies the initial abstraction (Ia) the rainfall amounts for both watersheds
are greater than 1.8" at 2.4" and 2.6" respectively, thus making the site compliant with
the goal of EISA Section 438.
The Army Planning Tool was used to confirm that we are compliant with EISA. See
below for site report from the planning tool.
LOSE DESIGN 1 2809 FOSTER AVENUE NASHVILLE, TN 37210 1 615.242.0040
www.lose.design

Army LID Planning and Cost Tool Report
PROJECT INFO
SITE INFO AND EISA VOLUME
Date 12/20/2019
REQUIREMENT
Army Command IMCOM
Project limit of disturbance (ac) 33
Army Installation Fort Bragg
95% rainfall depth (in) 1.8
Soil type Sandy
Project name
Project description
Hydrologic Soil Group (HSG) A
Willow Lakes Sports Complex Phase 2
Pre -project curve number (CN) 42
Post -project curve number (CN) 45
User Name KA
Pre -project runoff volume (cf) 0
Master Planner
Post -project runoff volume (cf) 0
EISA Section 438 retention volume 0
requirement (cf)
LID PLANNING SUMMARY
Structural BMP Surface area
Runoff volume Non-structural BMP
(s�
retained (c fl
Bioretention:
0 Veg. Filter Strip (Slope >2%, Short Grass):
Swale:
0 Veg. Filter Strip (Slope >2%, Tall Grass):
Permeable Pavement:
0 Veg. Filter Strip (Slope <2%, Short Grass):
Rainwater Harvesting:
0 Veg. Filter Strip (Slope <2%, Tall Grass):
Green Roof:
0 Reforestation (Trees - Short Grass):
Infiltration Practice:
0 Reforestation (Trees - Shrubs and Tall Grass):
Total retention volume provided by BMPs (cf): 0
Project complies with EISA Section 438.
LID COST SUMMARY
Surface
area (ac)
0.00
0.00
0.00
0.00
0.00
0.00