SW8970408_HISTORICAL FILE_20200713

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8',_a l0-9ng,?
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
C� HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
U7,0 07 r -5
YYYYMMDD

I
I Storm'water Management Narrative
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prepared for:
1
FY16 P-1280B Birch Street
QRoad Improvements
Camp Lejeune, NC
Project No. 1374744
' Hobby Shop Complex Phases I and II
Modification for Stormwater Permit
SW8-970408
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6/17/2020
prepared by:
Burns & McDonnell Consultants, Inc.
Chesapeake, VA
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TABLE OF CONTENTS
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Page No.
a1.0 STORMWATER MANAGEMENT NARRATIVE................................................1-2
1.1 References ................................ -
1.2 Design Approach................................................................................................. 1-2
APPENDIX A — STORMWATER PERMIT BOUNDARY EXHIBIT & PLAN
SHEETS
APPENDIX B — USGS MAP
APPENDIX C — WET POND DESIGN CALCULATIONS
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Burns & McDonnell

1.0 STORMWATER MANAGEMENT NARRATIVE
1.1 References
• UFC 3-210-10, Low Impact Development, with Change I, 01 February 2016
• "Technical Guidance on Implementing the Stormwater Runoff Requirements for Federal Projects
under Section 438 of the Energy Independence and Security Act (EISA 438), December 2009
• North Carolina Department of Environmental Quality (NCDEQ) Stormwater BMP Manual, 2018
edition
• North Carolina Administrative Code Section 15A NCAC 021-1
1.2 Design Approach
The proposed widening of Birch Street requires modification to the high -density Hobby Shop Complex
Phases l and 11 Permit, SW8-970408. This will involve reducing the size of the existing islands at the
egress points onto Birch Street. The original permit, based on permit documentation provided by DEQ,
show the permit area to be 249,163 SF (5.72 AC) with 122,839 SF (2.82 AC) of impervious area. The
Intel BN Interim Facilities, Permit SW8-080734, now referred to as the Trailer Parking Lot, is located
directly east of the Hobby Shop site, and currently overlaps a portion of the Hobby Shop permit area, The
Hobby Shop permit was not modified at the time the Trailer Parking Lot permit was issued; therefore, this
permit modification will rectify the permit area overlap. This resulted in a reduction of approximately
71,529 SF (1.64 AC), including 3,364 SF (0.08 AC) of impervious area and approximately 68,165 SF
(1.56 AC) of pervious area from the Hobby Shop permit area, which has been incorporated into the
Trailer Parking Lot permit area.
To accommodate for the proposed roadway improvements, the permit boundary will be modified by
removing existing; impervious area from the permit area and adding new impervious area associated with
the widening. As part of this permit modification, 7,018 SF (0. 16 AC) will be removed from the permit
area and incorporated into the Wallace Creek Regimental Complex Phase 1 Roads Permit, SW8-090109.
This will also remove 4,238 SF (0.10 AC) of impervious area. The reduction in permit area is
accomplished by adjusting grades and adding catch basins and trench drains to direct runoff away from
the Hobby Shop stormwater facility. The catch basins and trench drains will collect runoff from Birch
Street, which is then conveyed to the existing channel located west of the Hobby Shop site. Since the
Wallace Creek and Hobby Shop permit areas currently overlap, the overall Wallace Creek permit area
will not be increased, and the two permit areas will now abut one another.
Burns & McDonnell

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To avoid modifying the Wallace Creek permit area, 3,575 SF (0.08 AC) will be added to the Hobby Shop
permit area. '['his includes 2,1 13 SF (0.05 AC) of existing impervious area associated with two access
drives into the Hobby Shop parking lot. Since the contributing drainage area is being modified, a new
design volume calculation was performed for the I" design storm. The 1" design storm, which was the
requirement at the time of permit issualtce, was utilized because the proposed BUA is within the original
permitted BUA. In order to show that the existing wet detention basin will not be negatively impacted, the
new design volume and required surface area were confirmed to not exceed the available volume and
provided sur[Ztce area in the wet detention basin based on its design. A summary ofthe permit area
modifications is demonstrated below:
Original Permit Area: 249,163 SF (5.72 AC)
Original Impervious Area: 122,839 SF (2.82 AC)
Area Removed 1 Absorbed by SW-080734: 71,529 SF (1.64 AC)
impervious Area Removed: 3,364 SF (0.08 AC)
Area Removed 1 Absorbed by SW8-090109: 7,018 SF (0.16 AC)
Impervious Area Removed: 4,238 SF (0,10 AC)
Present Permit Area:
170,616 SF (3.92 AC)
Present Impervious Area:
1 15,237 SF (2.65 AC)
Area Added to Permit:
3,575 SF (0.08 AC)
Impervious Area Added:
2,113 SF (0.05 AC)
Modified Total Permit Area: 174,191 SF (4.00 AC)
Modified Total Impervious Area: 117,350 SF (2.69 AC)
' Drainage Area for Wet Detention Basin
Design Drainage Area = 5.72 AC
Design Impervious Area = 2.82 AC
Provided Volume = 32,441 CF
Provided Surface Area = 10,750 SF
I
Proposed Drainage Area = 4.00 AC
Proposed Impervious Area = 2.69 Acres
New Design Volume = 9,525 CIF
Required Surface Area = 10,089 SF
Burns & McDonnell

APPENDIX A - STORMWATER PERMIT BOUNDARY EXHIBIT & PLAN
SHEETS

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IAPPENDIX C - WET POND DESIGN CALCULATIONS
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BURNS`MCDONNELL
tHOBBY SHOP WET POND DESIGN CALCULATIONS
Impervious Area Percentage
Total Area = 4.00 ac
Total Impervious Area = 2.69 ac
2.69 ac
%Impervious = 4.00 ac — 0.673 = 67.3fl/o
Required Surface Area
67% Impervious & 4 f t Deep
SAIDA = 5.79%
(4.00 ac)(5.79)(43560 sf/ac)
SA _
100
SA = 10, 088 sf (required)
SA = 10, 750 sf (provided)
Design Volume
RV = 0.05 + 0.91A = 0.05 + 0.9(0.673) = 0.656
DV = 3,630RDRVA = 3,630(1 in)(0.656)(4.00 ac)
DV = 9,525 cf (required)
DV = 32,441 cf (provided)
Depth Required for V Design Storm
DV (required) 9,525 cf
D SA (provided) 10,750 sf 0.89 ft
Tot) of Outfall Weir
Top of Outf all Weir = Permanent Pond Elevation + D = 19.00 + 0.89
Top of Outf all Weir = 19.89 (required)
Top of Out f all Weir = 2 1. 50 (provided)
1317 Executive Blvd. \ Suite 300 \ Chesapeake, VA 23320
p 757-548-2056 \ F 757-548-2812 \ burnsmcd.com
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BURNS `MSDONNELL
HOBBY SHOP WET POND DESIGN CALCULATIONS
2 to 5 Day Drawdown
Average Head = (21.50 — 19.00)/3 = 0.83 ft (elevations from previous design calculations)
Q = CA 2gh
Where: Q = drawdown flow rate (cfs)
A = Area of orif ice = 1.77 in2 = 0.0123 sf (field verified orifice size)
C = 0.60 (coeffecient for submerged orifice)
h = haverage = 0.83 ft (based on elevations from previous design calcs)
Q = (0.60)(0.0123 sf)V2(32.2 ft/sz)(0.83 ft) = 0.05396 cfs
DV (required) _ 9,525 cf
T Q 0.05396 cfs = 176,520 seconds
T = 2.04 days
Emergency Overflow Requirements
100 yr storm
@ Tc = 12.3 min (previous design calcs) -j iloo = 8.88 in/hr
Q = CiA = (0.72) (8.88 in/hr) (4.00 ac) = 25.57 c f s
Depth on Weir to Pass ] 00-yr Storm
L = weir length = 2(2.67 f t) + 4 f t = 9.34 f t
3/2 — Q _ 25.57 cfs _
h 0.856
CL (3.2)(9.34 ft)
h=0.90ft
HWL160 = 21.50 f t + 0.90 f t
HWL100 = 22.40 ft
1317 Executive e1vd. \ Suite 300 \ Chesapeake. VA 23320
0 757-548-2056 \ F 757-548-2812 \ burnsmcd.com
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1 BURNS �MCDONNELL.
CREATE AMAZING.
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Burns & McDonnell World Headquarters
9400 Ward Parkway
Kansas City, MO 64114

Hobby Shop_WetCamp Lejeune Precipitation Frequency 1-yr Duration=12 min, Inten=4.34 injhr
Prepared by Burns and McDonnell Printed 6/17/2020
HydroCADO 10.00-24 sln 08510 © 2018 HydroCAD Software Solutions LLC Page 1
Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points
Runoff by Rational method, RiselFall=1.011.0 xTc
Reach routing by Stor-Ind method - Pond routing by Stor-Ind method
Subcatchment1S: WET POND - PRE Runoff Area=249,163 sf 0.00% Impervious Runoff Depth=0.53"
Tc=12.3 min C=0.62 Runoff=15.15 cfs 0.250 of
Subcatchment2S: WET POND - POST Runoff Area=174,191 sf 0.00% Impervious Runoff Depth-0.61"
Tc=12.3 min C=0.72 Runoff=12.30 cfs 0.203 of
Total Runoff Area = 9.719 ac Runoff Volume = 0.454 of Average Runoff Depth = 0.56"
100.00% Pervious = 9.719 ac 0.00% Impervious = 0.000 ac
JUL 13 2010
BY.

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Hobby Shop_WetCamp Lejeune Precipitation Frequency 1-yr Duration=12 min, lnten=4.34 in/hr
Prepared by Burns and McDonnell Printed 6/17/2020
HydroCAD® 10.00-24 s/n 08510 ©2018 HydroCAD Software Solutions LLC Page 2
Summary for Subcatchment IS: WET POND - PRE
Runoff = 15.15 cfs @ 0.20 hrs, Volume= 0.250 af, Depth= 0.53"
Runoff by Rational method, Rise/Fall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
Camp Lejeune Precipitation Frequency 1-yr Duration=12 min, Inten=4.34 inlhr
Area (sf) C Description
126,324 0.35 >75% Grass cover, Good, HSG A
122,839 0.90 Paved parking, HSG A
249,163 0.62 Weighted Average
249,163 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(_min) (feet) (ftlft) (ft/sec) (cfs)
12.3 Direct Entry, FROM PREVIOUS DESIGN CALCS
Subcatchment IS: WET POND - PRE
Hydrograph
15, 15 cfs
Camp Lejeune Precipitation Frequency 1,-yr
15. i Duration-12 rriiri,
14- Inten=4.34 in'thr
13 i - Runoff Area=249,163 sf.
12. Runoff Volume=0.250 of
117 Runoff Depth=0.53"
10 Tc=12.3 min
M C=01.62
9
0 8
w -
6_
5
3`
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Time (hours)

Hobby Shop_WetCamp Lejeune Precipitation Frequency 1-yr Duration=12 min, lnten=4.34 in/hr
Prepared by Burns and McDonnell Printed 6/17/2020
HydroCAD®10.00-24 sln 08510 © 2018 HydroCAD Software Solutions LLC Page 3
Summary for Subcatchment 2S: WET POND - POST
Runoff = 12.30 cfs @ 0.20 hrs, Volume= 0.203 af, Depth= 0.61"
Runoff by Rational method, Rise/Fall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
Camp Lejeune Precipitation Frequency 1-yr Duration=12 min, Inten=4.34 inlhr
Area (sf) _ C _ Description
56,841 0.35 >75% Grass cover, Good, HSG A
117,350 0.90 Paved parking, HSG A
174,191 0.72 Weighted Average
174,191 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ftlsec) (cfs)
12.3 Direct Entry, FROM PREVIOUS DESIGN CALCS
Subcatchment 2S: WET POND - POST
f Hydrograph
12.30 ds
12 .Camp Lejeune Precipitation Frequency 1,.yr
Duration=12 min,
11 Inten=4.34 inthr
Runoff'Area=174;191 sf
10 Runoff Volume=4.203 of
g Runoff Dep6=0.61'
Tc=12.3 min
w 8 i C=02
7-
0 s {-
u. 6- i
5-
4-
3-
2 ..
Q 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Time (hours)
(] Runoff

BURNS NMSDONNELL
HOBBY SHOP WET POND DESIGN CALCULATIONS
Impervious Area Percentage
Total Area = 4.00 ac
Total Impervious Area = 2.69 ac
2.69 ac
% Impervious = = 0.673 = 67.3%
4.00 ac
Required Surface Area
67% Impervious & 4 ft Deep
SAIDA = 5.79%
SA = (4.00 ac)(5.79)(43560 sf/ac)
100
SA = 10, 088 s f (required)
SA = 10, 750 sf (provided)
DesiLm Volume
RV = 0.05 + 0.91A = 0.05 + 0.9(0.673) = 0.656
DV = 3,630Rf)RvA = 3,630(1 in)(0.656)(4.00 ac)
DV - 9,525 of (required)
DV = 32,441 cf (provided)
Depth Required for l" Design Storm
_ _ DV (required) _ 9,525 cf f
D SA (provided) 10,750 s f 0.89 t
Top of Outfall Weir
Top of Outf all Weir = Permanent Pond Elevation + D = 19.00 + 0.89
Top of Out f all Weir = 19.89 (required)
Top of Outf all Weir = 21.50 (provided)
1311 Executive Blvd. \ Suite 300 \ Chesapeake, VA 27,320
0 757-548-2056 \ F 757-548-2812 \ burnsmcd.com

BURNS MEDONNELL
HOBBY SHOP WET POND DESIGN CALCULATIONS
2 to 5 Day Dmwdown
Average Head = (21.50 — 19.00)/3 = 0.83 f t (elevations f rom previous design calculations)
Q=CA 2gh
Where: Q = drawdown flow rate (cfs)
A = Area of orifice = 1.77 in' = 0.0123 sf (field verified orifice size)
C = 0.60 (coe f f ecient f or submerged on f ice)
h = ltaverage = 0.83 f t (based on elevations from previous design talcs)
Q = (0.60)(0.0123 sf) 2(32.2 ft/sz)(0.83 ft) = 0.05396 cfs
DV (required) 9,525 cf
T = _ = 176,520 seconds
Q 0.05396 cfs
T = 2.04 days
l,mm,ency Overflow Requirements
1.00 yr storm
@ 7'c = 12.3 min (previous design talcs) --i iloo = 8.88 in/hr
Q = CiA = (0.72)(8.88 in/hr)(4.00 ac) = 2 5.5 7 cfs
Depth on Weir to Pass 100-xr Storm
L = weir length = 2(2.67 ft) + 4 ft = 9.34 ft
2S.S7 cfs
� _ (3.2)(9 34 ft) — 0.856
11=0.90ft
HWL10o = 21.50 ft+0.90 ft
HWL100 = 22.40 ft
ECEO V E
JUL 2020
BY:
2
1317 Executive Blvd. \ Suite 300 \ Chesapeake, VA 23320
0 757-548-2056 \ F 757-548-2812 \ burnsmcd.com

BURNS hSMCDQNNELL
July 10, 2020
Christine Hall
Regional Stormwater Program Supervisor
NCDEQ-Wilmington Regional Office
127 Cardinal Drive Ext,
Wilmington, NC 28405
Re: Request for Additional Information
Stormwater Project No. SW8 970408
Hobby Shop Complex Phases I and II
Onslow County, NC
Dear Ms. Hall:
i fweww
JUL 13 7070
morna
VJfJlt�kiW� �
We have received and reviewed your Request for Additional Information sent by the Department
of Environmental Quality dated July 7, 2020 for the Express Stormwater Permit Modification of
Permit SW8 970408 Hobby Shop Complex Phases I and IL In response to your requests, please
find the enclosed two (2) hard copies of all updated documents.
Below are our responses to your requests for additional information (our responses are shown in
hold below each request):
15A NCAC 02H.1042(2)(a): As discussed in the submittal meeting, please provide the
originally signed application form.
Response: The originally signed application form is provided with this submission.
2. 15A NCAC 0211.1042(3)(b):
a. As discussed in the submittal meeting, please update the narrative and pages I and 3 of the
application to better describe the history of the project and the proposed modification.
b. Please complete the bottom elevation item in the supplement under the elevations heading.
Response:
a. Both the narrative and pages t and 3 of the application have been updated to better
. describe the history of the project and the proposed modification.
b. The bottom elevation item has been filled out in the revised supplement form.
3. 15A NCAC 02I-1.1042(2)(0-.
a. The drawdown calculations appear to be based on the provided volume instead of the
minimum required design volume as originally approved. Please calculate the pond
drawdown time using the minimum required design storage volume and the identified
average head.
1317 Executive Blvd. \ Third Floor \ Chesapeake, VA 23320
0 757-548-2056 \ F 757-548-2812 \ burnsmcd.com

BURNS �MG®ONNELL
Christine Hall
NCI)EQ-Wilmington Regional Office
July 10, 2020
Page 2
b. And .1042(2)(h)(ii): This pond was originally approved in 1997 with two orifices with
1.5" and 1.25" diameters. The renewal included one orifice with a 3" diameter. Please
clarify the as -built condition of the pipe outlet. Please provide an outlet structure detail if
available.
Response:
a. The drawdown time calculation has been revised to utilize the minimum required
storage volume and the identified average head. Based on the results of the
drawdown calculation, the existing 1.5" orifice is sufficient to achieve the required
2-5 day drawdown period.
b. MCB Camp Le,jeune DPW personnel has field -verified that the existing outlet
structure has a 1.5" 0 orifice. It appears as though the additional 1.25" 0 orifice,
which was proposed in the approved Hobby Shop Phase 2 plans, was not installed.
4. 15A NCAC 02H.1042(2)(g)(iii): As discussed in the submittal meeting, please provide the
boundaries of all surface waters, wetlands, regulatory flood zones, protected vegetated
setbacks, and protected riparian buffers, or a note on the plans that none exist. If a note is
already provided on the plans, please provide a citation of where it can be located.
Response: Wetlands are identified beyond the limits of the permit boundary to the west
on loth the north and south sides of Birch Street, as shown on Sheets EX-1 and
CP102.
5. 15A NCAC 02H.1042(2)(g)(iv): As discussed in the submittal meeting, please provide
proposed contours and drainage patterns. The revised plans sent via email have be
reviewed and appear to resolve this issue. Please provide two hard copies.
Response: Two hard copies of the revised plans showing the contours and drainage
patterns have been provided.
6. 15A NCAC 02H.1042(2)(g)(vii): The inverts for the pipe collection system to the pond are
missing. Please provide the details of the stormwater collection system, including the
inverts of the piped collection system.
Response: The proposed inverts for the pipe collection system to the pond have been
provided in the table on Sheets C-015, C-019, C-020 and C-021. Details of the
stormwater collection system have been provided on Sheets CP510 through CP-513.
7. Due to the relatively minor nature of these comments, the express additional information
review fee has been waived.
1317 Executive Blvd. \ Third Floor \ Chesapeake, VA 23320
0 757-548-2056 \ F 757-548-2812 \ burnsmcd.com

BURNS S MGDONNELL
Christine Hall
NCDEQ-Wilmington Regional Office
July 10, 2020
Page 3
Response: Noted.
Sincerely,
/'Z
Z,.j e
Scott Chewning, PE, LEED AP
Associate, Senior Project Manager
BSC/rags
1317 Executive Blvd. \Third Floor \ Chesapeake, VA 23320
0 757-548-2056 \ F 757.548-2812 burnsmcd.com

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
BRIAN WRENN
Director
July 7, 2020
Via email only: [e-mail]
MCB Camp Lejeune
Attn: Commanding Officer
c/o Neal Paul, Deputy Public Works Officer
1005 Michael Road
Camp Lejeune, NC 28547
NORTH CAROLINA
Environmental Quality
Subject: Request for Additional Information
Stormwater Project No. SW8 970408
Hobby Shop Complex Phases I and 11
Onslow County
Dear Mr. Paul:
The Wilmington Regional Office received and accepted a modified Express State Stormwater Management
Permit Application for the subject project on June 25, 2020. A preliminary in-depth review of that information
has determined that the application is not complete and that additional information is needed. To continue the
review, please provide the following additional information in a single, hard copy submittal package:
1. 15A NCAC 02H. I 042(2)(a): As discussed in the submittal meeting, please provide the originally signed
application form.
2. 15A NCAC 02H.1042(3)(b):
a. As discussed in the submittal meeting, please update the narrative and pages 1 and 3 of the
application to better describe the history of the project and the proposed modification.
b. Please complete the bottom elevation item in the supplement under the elevations heading.
3. 15A NCAC 02H.1042(2)(f):
a. The drawdown calculations appear to be based on the provided volume instead of the minimum
required design volume as originally approved. Please calculate the pond drawdown time using
the minimum required design storage volume and the identified average head.
b. And .1042(2)(h)(ii): This pond was originally approved in 1997 with two orifices with 1.5" and
1.25" diameters. The renewal included one orifice with a 3" diameter. Please clarify the as -built
condition of the pipe outlet. Please provide an outlet structure detail if available.
4. 15A NCAC 02H.1042(2)(g)(iii): As discussed in the submittal meeting, please provide the boundaries of
all surface waters, wetlands, regulatory flood zones, protected vegetated setbacks, and protected riparian
buffers, or a note on the plans that none exist. If a note is already provided on the plans, please provide a
citation of where it can be located.
5. 15A NCAC 02H.1042(2)(g)(iv): As discussed in the submittal meeting, please provide proposed
contours and drainage patterns. The revised plans sent via email have be reviewed and appear to resolve
this issue. Please provide two hard copies.
6. 15A NCAC 02H.1042(2)(g)(vii): The inverts for the pipe collection system to the pond are missing.
Please provide the details of the stormwater collection system, including the inverts of the piped
collection system.
7. Due to the potentially minor nature of these comments, the express additional information review fee has
been waived.
Please remember to confirm that any revised information is presented consistently throughout the application
documents including calculations, supplements, narrative, and plans. Please also remember to provide two hard
copies of any updated documents per 15A NCAC 02H.1042(2),
R E Q�� North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
Wilmington Regional Office 1 127 Cardinal Drive Extension I Wilmington, North Carolina 28405
910.796.7215

State Stormwater Permit No. SW8 970408
Page 2 of 2
All of the requested information listed above should be received in this Office by July 14, 2020, or the
application will be returned as incomplete. If additional time is needed to submit the requested information,
please email your extension request prior to this due date to the email address provided below with a justification
and a date of when the requested information will be submitted, which shall be no later than 5 business days past
the original due date. Please remember that extension requests delay the issuance of the final permit. Also,
please note that only two letters requesting additional information is allowed in the State Stormwater Program. If
the information is not satisfactorily provided after the second request, the project will be returned. If the project
is returned and you wish to re -submit to the Express Program, you will need to reschedule the project through the
Express Coordinator for the next available review date and will need to resubmit all required items at that time,
including the application fee.
The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation
Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS
143-215.6A.
Please label all packages and cover letters as "Express" and reference the State assigned project number on all
correspondence. If you have any questions concerning this matter, please feel free to call me at [phone] or
email me at [e-mail].
Sincerely,
Kellie Norris, EIT
Environmental Engineer
DES/kn: I11StormwaterlPermits & Prcjectsl19971970408 HD12020 07 addinfo 970408
cc: Scott Chewning, Burns & McDonnel; via email: [e-mail]
Wilmington Regional Office Stormwater File

717/2020
Mail - Hall, Christine - outlook
Re: [External] RE: Request for additional info, Hobby Shop, SW8 970408
Hall, Christine <[e-mail]>
Tue 7/7/2020 10:S9 AM
To: Stritzl, Stephen L (Steve) <[e-mail]>; Chewning, B Scott <[e-mail]>; Barraco CIV Talia M
< tali a,[e-mail]>
Cc: Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR (US)<christopher.l.schmit@navy. mil >; Sargent, Mikala G
<[e-mail]>; Littlefield, Scott G CIV USN NAVFAC MIDLANT NOR (USA) <scott.g,littlefield@navy,mil>; Norris,
Kellie E <[e-mail]>; Weaver, Cameron <[e-mail]>
1 1 attachments (593 KB)
2020 07 add info 970408.pdt
My apologies! It should be attached now.
" Please note the change to my direct phone number `*
Christine Hall
Wilmington Regional Stormwater Program Supervisor
Division of Energy, Mineral and Land Resources — State Stormwater Program
North Carolina Department of Environmental Quality
Office:
910 796 7215
Direct:
910 796 7339
Email:
[e-mail]
Address:
127 Cardinal Drive Ext,
Wilmington, NC 28405
Q:>
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to
third parties.
third parties.
From: Stritzl, Stephen L (Steve) <[e-mail]>
Sent: Tuesday, July 7, 2020 10:54 AM
To: Hall, Christine <[e-mail]>; Chewning, B Scott <[e-mail]>; Barraco CIV
Talia M <[e-mail]>
Cc: Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR (US)<christopher.l.schmit@navy. mil>; Sargent, Mikala
G <[e-mail]>; Littlefield, Scott G CIV USN NAVFAC MIDLANT NOR (USA)
<[e-mail]>; Norris, Kellie E <[e-mail]>; Weaver, Cameron
<[e-mail]>
Subject: [External] RE: Request for additional info, Hobby Shop, SW8 970408
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment
to [e-mail]
Hi Christine,
We didn't see an attachment with the email you sent?
htipslloutlook.office365.com/mail/sentitemslid/AAQkADFiMTJIMjg2LTAOZDMtNDM5MCl hYzRILTIOZjEzMT13ZrnF)YwAQAJdZfnZ2fUZEoMusV2ckrwO... 1/7

717I2020 Mail - Hall, Christine - Outlook
Would you mind resending.
Thanks very much,
Steve Stritzl, RLA 1 Burns & McDonnell
Senior Landscape Architect 1 Land Planning & Design
o 757-819-5347 1 F 757-548-2812
[e-mail] 1 burnsmcd.com [burnsmcd com]
1317 Executive Blvd, 3rd Floor 1 Chesapeake, VA 23320
From; Hall, Christine <[e-mail]>
Sent: Tuesday, July 7, 2020 10:52 AM
To: Stritzl, Stephen L (Steve) <[e-mail]>; Chewning, B Scott <[e-mail]>;
Barraco CIV Talia M <[e-mail]>
Cc: Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR (US) <[e-mail]>; Sargent, Mikala
G <[e-mail]>; Littlefield, Scott G CIV USN NAVFAC MIDLANT NOR (USA)
<scott.g:[e-mail]>; Norris, Kellie E <kellie.norris@ncdenrgov>; Weaver, Cameron
<cameron.weaver@ ncden r.gov>
Subject: Request for additional info, Hobby Shop, SW8 970408
All,
Attached is a pdf of the request for additional information for this project. Please let Kellie or I know if
you have any questions. Please also remember to label any packages submitted with "EXPRESS".
Thanks.
`" Please note the change to my direct phone number —
Christine Hall
Wilmington Regional Stormwater Program Supervisor
Division of Energy, Mineral and Land Resources - State Stormwater Program
North Carolina Department of Environmental Quality
Office: 910 796 7215
Direct: 910 796 7339
Email: [e-mail]
Address: 127 Cardinal Drive Ext,
Wilmington, NC 28405
Q..
D-- E Igm-Wmem
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to
third parties.
third parties.
From: Stritzl, Stephen L (Steve) <[e-mail]>
Sent: Tuesday, June 30, 2020 3:43 PM
To: Weaver, Cameron <cameron,[e-mail]>; Hall, Christine <Christine.Hall@ncdenrgov>
Cc: Chewning, B Scott <[e-mail]>; Barraco CIV Talia M <[e-mail]>; Schmitt,
Christopher L CIV USN NAVFAC MIDLANT NOR (US)<[e-mail]>; Sargent, Mikala G
<[e-mail]>; Littlefield, Scott G CIV USN NAVFAC MIDLANT NOR (USA)
https:iloutlook.ofiice365.com/mail/sentitemslid/AAQkADFiMTJIMjg2LTAOZDMtNDM5MC1 hYzRILTIOZjEzMT13ZmFIYwAQAJdZfnZ2fUZEoMusV2ckrwO... 217

7/7/2020
Mail - Hall, Christine - Outlook
<scott.g.IittIefieId.@ avy.miI>
Subject: RE. [External] FW: Birch Street - Package 2 Express documents
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to [e-mail]
Hi Christine,
We have addressed the comments from the 6/25 meeting, for your review prior to us sending you hard (2) copies.
a BMcD will provide grades on the plan sheet to show the grade breaks that support the
drainage areas — See SWMP Hobby Shop Plans — Sheet 102
o The narrative will be modified to address the fact that the permit was not modified to address
the trailer park project. — See Revised Narrative page 4 of the PDF
The application needs to be modified to correct the previous modification date as well as the
project description. — See the revised Application
o Under item #1 on the application, fix the project number to P1280. — See the revised
Application
Updated sheets for the application can be slip sheeted. The base does not need to resign the
application. — Understood
o The submittal package requires the original sealed copy of the application. BMcD will confirm
that the original was sent. — We have one original sealed, this will be included in with the
hard copy to be overnighted upon your review/green light.
o A note will be added on the specific plan sheet, not the overall plan, that there are no
wetlands within the limits of these improvements. — See SWMP Hobby Shop Plans — Sheet
EX-1
Thanks,
Steve Stritzl, RLA 1 Burns & McDonnell
Senior Landscape Architect 1 Land Planning & Design
o 757-819-53471 F 757-548-2812
[e-mail] 1 burnsmcd.com [burnsmcd.com]_f nam05.safelinks.protection.outlook.comJ
1317 Executive Blvd, 3rd Floor 1 Chesapeake, VA 23320
From: Chewning, B Scott <[e-mail]>
Sent: Thursday, June 25, 2020 10:57 AM
To: Weaver, Cameron <[e-mail]>; Hall, Christine <[e-mail]>
Cc: Barraco CIV Talia M <[e-mail]>; Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR (US)
<christopher.l.schmit@navymil>; Sargent, Mikala G <[e-mail]>; Stritzl, Stephen L (Steve)
<[e-mail]>; Littlefield, Scott G CIV USN NAVFAC MIDLANT NOR (USA) <[e-mail]>
Subject: RE: [External] FW: Birch Street - Package 2 Express documents
Christine, Cameron and Kelly,
Thank you for meeting with us today. Below are my notes from the meeting. Let me know if there's anything I left
out. Enjoy the upcoming weekend.
Meeting Date: 6/25/2020 10:00 AM
Location: Microsoft Teams Meeting
Link to Outlook Item: click here
Invitation Message
Participants
https:lloutlook.office365.comlmaillsentitemslidlAAQkADFiMTJIMjg2LTAOZDMINDM5MCl hYzRILTIOZjEzMT13ZmF)YwAQAJdZfnZ2fUZEoK4usV2ckrw0... 317

717/2020 Mail - Hall, Christine - Outfock
Chewning, B Scott (Meeting Organizer)
Weaver, Cameron (Accepted in Outlook)
Stritzl, Stephen L (Steve)_(Aceepted in Outlook)
Hall, Christine (Accepted in Outlook)
Littlefield, Scott G CIV USN NAVFAC MIDLANT NOR (USA).
Barraco CIV Talia M (Accepted in Outlook)
Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR (US)_(Accepted in Outlook)
Sargent, Mikala G (Accepted in Outlook)
Kelly Norris
Notes from the meeting:
Additional information to be provide to Christine via email (2 hard copies of this information
should be submitted once it is confirmed that no additional information is required after
Christine's review):
o BMcD will provide grades on the plan sheet to show the grade breaks that support the
drainage areas
o The narrative will be modified to address the fact that the permit was not modified to address
the trailer park project.
o The application needs to be modified to correct the previous modification date as well as the
project description.
o Under item #1 on the application, fix the project number to P1280.
o Updated sheets for the application can be slip sheeted. The base does not need to resign the
application.
o The submittal package requires the original sealed copy of the application. BMcD will confirm
that the original was sent.
o A note will be added on the specific plan sheet, not the overall plan, that there are no
wetlands within the limits of these improvements.
All requested information will be sent to Christine via email by Tuesday, 6/30.
Package was accepted as of 6/25/2020
Scott Chewning, P.E., LEED AP 1 Burns & McDonnell
Senior Project Manager I Department Manager
Land Planning & Design
O 757-819-97351 M 757-647-2308
[e-mail] lburnsmcd.com fnam05.safelinks.protection.outlook.com]
[nam05.safeIinks. protection.outlook.com]
1317 Executive Blvd, 3rd Floor 1 Chesapeake, VA 23320
0(narn05.safelinks.protection.outlook.com]_[namO5.safelinks.Drotection.outlook.comI Q
[nam05.safelinks.protection,outlook.com]_[nam05.safelinks.protecbon,outlook.com] 0
InamOS.safelinks. protection.outlook.coml_[aa 05.safelinks.protection.outlook.com] 0
[n�m05_.safelinks.protection.outlook.com]-[nam05.safelinks.protectian.outlook.com]
[nam05.safelinks.protection.outlook.com]_]nam05.safelinks.protection.outlook.comj
[nam05.safelinks.protection.outlook.comj-[namOS.safelinks.protecbon.outlook.com]
Proud to be one of FORTUNE's 100 Best Companies to Work For
-----Original Appointment -----
From: Chewning, B Scott
Sent: Monday, May 11, 2020 11:00 PM
To: Chewning, B Scott; Weaver, Cameron; Stritzl, Stephen L (Steve); Hall, Christine; Littlefield, Scott G CIV USN
https:lloutiook.office365.comlmaillsentitemstidlAAQkADFiMTJIMjg2LTAOZDMtNDM5MC1 hYzRILTIOZjEzMT13ZmFIYwAQAJdZfnZ2fUZEoMusV2ckrwO... 417

Hall, Christine -
From: Stritzl, Stephen L (Steve) <[e-mail]>
Sent: Tuesday, June 30, 2020 3:44 PM
To: Weaver, Cameron; Hall, Christine
Cc: Chewning, B Scott; Barraco CIV Talia M; Schmitt, Christopher L CIV USN NAVFAC
MIDLANT NOR (US); Sargent, Mikala G; Littlefield, Scott G CIV USN NAVFAC MIDLANT
NOR (USA)
Subject: RE: [External] FW: Birch Street - Package 2 Express documents
Attachments: SWMP Application -Hobby Shop-2020-06-30.pdf; SWMP Hobby Shop
Plans-2020-06-30.pdf; Stormwater Management Narrative -Hobby Shop-2020-06-30.pdf
Hi Christine,
We have addressed the comments from the 6/25 meeting, for your review prior to us sending you hard (2) copies.
• BMcD will provide grades on the plan sheet to show the grade breaks that support the drainage
areas — See SWMP Hobby Shop Plans — Sheet 102
o The narrative will be modified to address the fact that the permit was not modified to address the
trailer park project. — See Revised Narrative page 4 of the PDF
a The application needs to be modified to correct the previous modification date as well as the
project description. — See the revised Application
o Under item 41 on the application, fix the project number to P1280. — See the revised Application
o Updated sheets for the application can be slip sheeted. The base does not need to resign the
application. — Understood
o The submittal package requires the original sealed copy of the application. BMcD will confirm that
the original was sent. — We have one original sealed, this will be included in with the hard copy to
be overnighted upon your review/green light.
o A note will be added on the specific plan sheet, not the overall plan, that there are no wetlands
within the limits of these improvements. — See SWMP Hobby Shop Plans — Sheet EX-1
Thanks,
Steve Stritzl, RLA 1 Burns & McDonnell
Senior Landscape Architect 1 Land Planning & Design
o 757-819-5347 1 F 757-548-2812
slstritzlIQburnsmcd.com 1 burnsmcd.com [burnsmcd.coml
1317 Executive Blvd, 31d Floor 1 Chesapeake, VA 23320
From: Chewning, B Scott <[e-mail]>
Sent: Thursday, June 25, 2020 10:57 AM
to: Weaver, Cameron <[e-mail]>; Hall, Christine <Christine.Hall @ncdenr•gov>
Cc: Barraco CIV Talia M <talia.barraco(@usmc.mil>; Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR (US)
<christo her.i.schmit nav .mil>; Sargent, Mikala G <[e-mail]>; Stritzl, Stephen L (Steve)
<[e-mail]>; Littlefield, Scott G CIV USN NAVFAC MIDLANT NOR (USA) <scott. .littlefield nav .mil>
Subject: RE: [External] FW: Birch Street - Package 2 Express documents

Christine, Cameron and Kelly,
Thank you for meeting with us today. Below are my notes from the meeting. Let me know if there's anything I left out.
Enjoy the upcoming weekend.
Meeting Date: 6/25/2020 10:00 AM
Location: Microsoft Teams Meeting
Link to Outlook Item: click hcre
Invitation Message
Participants
Chewnins. B Scott (;meeting Organizer)
Weaver, Cameron (,Accepted in Outlook)
Stritzl, Stephen L (Steve) (Accepted in Outlook)
Hall, Christine (Accepted in Outlook)
Littlefield, Scott G CIV USN NAVFAC iNVIIDLANI' NOR (USA)
Barraco CIV Talia M (Accepted in Outlook)
Schmitt, Christopher L CIV USN NAVFAC MIDI.,ANT NOR tU5J(Accepted in Outlook)
Sargent, Mikala G (Accepted in Outlook)
Kelly Non -is
Notes from the meeting:
• Additional information to be provide to Christine via email (2 hard copies of this information should be
submitted once it is confirmed that no additional information is required after Christine's review):
o BMcD will provide grades on the plan sheet to show the grade breaks that support the drainage
areas
o The narrative will be modified to address the fact that the permit was not modified to address the
trailer park project.
o The application needs to be modified to correct the previous modification date as well as the
project description.
o Under item #1 on the application, fix the project number to P1280.
o Updated sheets for the application can be slip sheeted. The base does not need to resign the
application.
o The submittal package requires the original sealed copy of the application. BMcD will confirm that
the original was sent.
o A note will be added on the specific plan sheet, not the overall plan, that there are no wetlands
within the limits of these improvements.
All requested information will be sent to Christine via email by Tuesday, 6/30.
Package was accepted as of6/25/2020
Scott Chewning, P.E., LEED AP 1 Burns & McDonnell
Senior Project Manager I Department Manager
Land Planning & Design
O 757-819-97351 M 757-647-2308
bschewning(cbburnsmcd.com 1 burnsmcd.com [nam05.safelinks.protection.outlook.coml
1317 Executive Blvd, 3rd Floor 1 Chesapeake, VA 23320
0 nam05.safelinks. rotection.outlook.com U[nam05.safelinks.protection.outlook.comI
[.pam05:safelinks.Brote
.. ction.outlook.coml 0[nam05.safelinks_protection.outlook,comI 0
[nam05.safelinks.protection.outlook.coml ""'m19io°'"" °© [nam05.safelinks.protection.outlook.comI
Proud to be one of FORTUNE's 100 Best Companies to Work For

From: Chewning, B Scott <[e-mail]>
Sent: Thursday, June 25, 2020 10:57 AM
To: Weaver, Cameron <[e-mail]>; Hall, Christine <[e-mail]>
Cc: Barraco CIV Talia M <[e-mail]>; Schmitt, Christopher L CIV USN NAVFAC MIDLANT
NOR (US)<christopher.l.schmit@navy. mil>; Sargent, Mikala G <[e-mail]>; Stritzl,
Stephen L (Steve) <[e-mail]>; Littlefield, Scott G CIV USN NAVFAC MIDLANT NOR (USA)
<scott. .littlefield nav .mil>
Subject: RE: [External] FW: Birch Street - Package 2 Express documents
Christine, Cameron and Kelly,
Thank you for meeting with us today. Below are my notes from the meeting. Let me know if there's
anything I left out. Enjoy the upcoming weekend.
Meeting Date: 6/25/2020 10:00 AM
Location: Microsoft Teams Meeting
Link to Outlook Item: click here
Invitation Message
Participants
Chewning, B Scott (Meeting Organizer)
Weaver. Cameron (Accepted in Outlook)
Stritzl, Stephen L (Steve) (Accepted in Outlook)
Hall, Christine (Accepted in Outlook)
Littlefield Scott G CIV USN NAVFAC MIDLANT NOR USA
Barraco CIV Talia M (Accepted in Outlook)
Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR (US) (Accepted in Outlook)
Sargent, Mikala G (Accepted in Outlook)
Kelly Norris
Notes from the meeting:
• Additional information to be provide to Christine via email (2 hard copies of this
information should be submitted once it is confirmed that no additional information is
required after Christine's review):
o BMcD will provide grades on the plan sheet to show the grade breaks that support
the drainage areas
o The narrative will be modified to address the fact that the permit was not modified
to address the trailer park project.
o The application needs to be modified to correct the previous modification date as
well as the project description.

1�
I I IGi' �'�1�a yFor DEC Use ONLY
Reviewer:
North Carolina Department of Environmental Quality submit:
Request for Express Permit Review -
Time
Confirm:
FILL-IN all the information below and CHECK the Permit(s) you are requesting for express review. Calf and Email the completed form to the
Permit Coordinator along with a completed DETAILED narrative, site plan(PDF file) and vicinity map (same items expected in the application
acka a of the project location. Please include this form in the application package.
• Asheville Region -Alison Davidson 828-296-4698;alison.davidson(a ncdenr.gov
• Fayetteville or Raleigh Region -David Lee 919-791-4203; david-lee ncdenr. ov
• Mooresville or Winston Salem -Marcia Allocco 704-235-2107, marcia.alloccooncdenr
• Washington Region -Lyn Hardison 252-948-3842 or Iyn.hardison(a)ncdenr.gov
• Wilmington Region -Cameron Weaver 910-796-7303 or cameron.weaverOncdenr.00v
NOTE: Project application received after 12 noon will be stamped in the following work day.
Project Name.
P1228 - BIRCH STREET ROADWAY IMPROVEMENTS County: ONSLOW
Applicant: SCOTT LITTLEFIELD Company: NAVFAC MIDADLANTIC
Address: 9324 VIRGINIA AVENUE City: NORFOLK, State: VA Zip: 23511-3624
Phone: [phone] Fax: - - Email: [e-mail]
Provided Existing Permits
related to this Project
SW 8970408
SW
SW
NPDES
NPDES
WQ
w0
E&S
E&S
Other
Physical Location:BIRCH STREET, CAMP LEJEUNE
Project Drains into BEAVERDAM CREEK waters —Water classification S8; NSW (DWR Surface Water Classifications Map)
Project Located in WHITE OAK River Basin. Is project draining to class ORW waters? N, within % mile and draining to class SA waters iV or within 1 mile
and draining to class HQW waters? N
EngineerlConsultant: BRIAN SCOTT CHEWNING Company: BURNS & MCDONNELL Address: 1305 EXECUTIVE BLVD City: CHESAPEAKE, State: VA Zip: 23320- Ecely
[G
iY
Phone: [phone]. Fax: [phone], Email: [e-mail] f
PLEASE PROVIDE ESTIMATED INVESTMENT AND EXPECTED EMPLOYMENT, IF AVAILABLE �p►� Q 6y4�
$ # JOBS
SECTION ONE: REQUESTING A SCOPING MEETING ONLY
® Scoping Meeting ONLY ❑ DWR, ❑ DCM, ❑ DEMLR, ❑ OTHER:
SECTION TWO: CHECK ONLY THE PROGRAM 5 YOU ARE REQUESTING FOR EXPRESS PERMITTING
❑ 401 unit ❑ Stream Origin Determination: _ # of stream calls — Please attach TOPO map marking the areas in questions
❑ Intermittent/Perennial Determination: — # of stream calls — Please attach TOPO map marking the areas in questions
❑ 401 Water Quality Certification ❑ Isolated Wetland (_linear fit or _acres)
❑ Riparian Buffer Authorization ❑ Minor Variance ❑ Major General Variance
® State Stormwater ❑ General ❑ SFR, ❑ SFR < 1 ac. ❑ Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility ❑ O(her
❑ Low Density ❑ Low Density -Curb & Gutter — # Curb Outlet Swales ElOff-site[SW (Provide permit #)j
❑ High Density -Detention Pond _ # Treatment Systems ❑ High Density -Infiltration — #Treatment Systems
❑ High Density -Bio-Retention _ # Treatment Systems ❑ High Density —SW Wetlands _ # Treatment Systems,
❑ High Density -Other _ # Treatment Systems / ® MOD:❑ Major ElMinor ❑ Plan Revision ❑ Redev. Exclusiorl-) (Provide permit #}
❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
❑ Upland Development ❑ Marina Development ❑Urban Waterfront
❑ Land Quality ® Erosion and Sedimentation Control Plan with >1 acres to be disturbed. (CK #
(for DEO use))
SECTION THREE — PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT for both sco in and express.meeting reguest
Wetlands on Site ® Yes ❑ No
Wetlands Delineation has been completed: ® Yes ❑ No
US ACOE Approval of Delineation completed: ❑ Yes ❑ No
Received from US ACOE ❑ Yes ❑ No
For DFQ use rsnly
Fee Split for multiple permits: (Check 9
Buffer Impacts: ❑ No ® YES: <1acre(s)
Isolated wetland on Property ❑ Yes ❑ No
404 Application in Process w/ US ACOE: ❑ Yes ❑ No Permit
Total Fee Amount $
SUBMITTAL DATES
Fee
SUBMITTAL DATES
Fee
CAMA
$
Variance (❑ Maj; ❑ Min)
$
SW (❑ HD, ❑ LD, ❑ Gen)
$
401:
$ j
LQS
$
Stream Deter,_
$
NCDEQ EXPRESS March 2016

1�11
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1.0 STORMWATER MANAGEMENT NARRATIVE
1.1 References
• UFC 3-210-01, Low Impact Development, with Change 1, 01 February 2016
• Technical Guidance on Implementing the Stormwater Runoff Requirements for Federal Projects
under Section 438 of the Energy Independence and Security Act (E1SA 438), December 2009
• North Carolina Department of Environmental Quality (NCDEQ) Stormwater BMP Manual, 2018
edition
• North Carolina Administrative Code Section 15A NCAC 02H
1.2 Design Approach
1-lobby Shop Complex permit includes the widening of Birch Street along the site frontage which involves
reducing the size of the existing islands at the egress points.A previous modification to the permit
involved to reduction of the permit area by approximately 58,890 SF with the creation of the Intel BN
lntermin Facilities, Permit SW8-080734. This permit took over a pervious portion of the Hobby Shop
Permit that is now called the trailer parking lot, thus reducing the size of the permit boundary and
directing runoff from this area away from the Hobby Shop permit facility an into the basins east of the
parking lot.The proposed improvements to Birch Street increase impervious surface within the limits of
the I -lobby Shop permit by 9,169 SF which produces additional runoff. The reduction in permit size
resulting from the loss of area to the trailer parking lot removes runoff within the Hobby Shop permit
area. When compared, there's a net increase in runoff from the ]-year and 2-year storm events, a net
decrease in runoff from the 25-year and 100-year storm events and no change in runoff for the l0-year
storm event. These results confirm there is no risk of flooding as a result of the proposed improvements.
Runoff calculations were prepared using the Hydraflow Hydrograph program utilizing TR-55. The soil
type at the site referenced from the USDA Web Soil Survey along with the surface areas was used to
calculate the CN values. Surface cover for the area removed was based on historical aerials at time of
original permit and design of the basin. Rainfall data was referenced from NOAA National Weather
Service. The following table summarizes the hydrograph results.
Hydrographs
I -Year
2-Year
10-Year
25-Year
100-Year
CFS)
CFS
CFS
(CFS)
(CFS
1. Runoff Added from New
0.625
0.763
1.185
1,475
2.011
impervious
2. Runoff Removed from Exclusion
0.019
0.1 1 1
1.182
2.473
5.432
of Pervious Area
Difference (2- l)
-0.606
-0.652
-0.003
0.998
3.421
Burns & McDonnell

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Hall, Christine
From: Hardison, Lyn
Sent: Wednesday, January 8, 2020 2:15 PM
To: Hall, Christine; Scott, Georgette; Zorda, Garrett D
Subject: P1228 - BIRCH STREET ROADWAY IMPROVE MENTS-SW8970408 Mod - Hobby Shop
Attachments: Stormwater Management Narrative -Hobby Shop.docx; Appendix A_PR-1
_PermitModificationPlans-Hobby Shop.pdf; REQUEST FOR EXPRESS form FINAL -Hobby
Shop.docx
Lyn Hardison [e-mail]
Environmental Assistance and SEPA Coordinator
NC Department of Environmental Quality
Division of Environmental Assistance & Customer Services (DEACS)
Washington Regional Office
943 Washington Square Mall
Washington, NC 27889
Phone: [phone]
Fax: [phone]
DEACS.NCDENR.Rov
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.

1317 Executive Blvd.
Suite 300
BURNS `M S D O N N E L L�� Chesapeake, VA 2332{1
THL 757 548 2056
JUN 2 2 2020 FAX [phone]
Transmittal
Date 18 June 2020
Project Name: P1280 Birch Street [toad lniprovements — Isxpress Package 2 Hobby Shop — SW8 970408
Cameron Weaver
Environmental Assistance Coordinator
NCDIQ-Wilmington Regional Office
127 Cardinal Drive Ext.
Wilmington NC 28405
We are ,sending lhese bY:
❑ U.S. Mail
❑ Otber
We are sending yoit:
®
Attached
❑
Shop drawings
❑
OOier
No. Date
❑ Under separate cover via
❑ PrimslP4tns ❑ Samples
Copies Description
❑ Specifications
❑ Hand Delivery
the following items:
❑ Change Orders
I
18 June 2020
2
Application
2
18 June 2020
1
Check for $4,000 for Permit Modification
3
18 June 2020
2
Drawings
4
18 June 2020
2
Narrative
These are lransmilted as checked below:
®
For your use
❑
Approved as submitted
❑
Resubmit
❑
As raquesfcd
❑
Approved as noted
❑
Submit
®
For review and continent
❑
Returned for corrections
❑
Returned
❑
For distribution
❑
For signature
❑
File copy
Remarks:
Copy to: File
Signed:
❑
Copies for approval
❑
Copies 1'or distribution
❑
CorrCCted prints
❑
Other:
Brian S. (Scott) Chewning

i)
For pEQ Use Ord!'(
Reviewer. yL�V
North Carolina Department of Environmental Quality submit: (p a
Request for Express Permit Review
Time:
confirm:
FILL-IN all the information below and CHECK the Permit(s) you are requesting for express review. Call and Email the completed form to the
Permit Coordinator along with a completed DETAILED narrative, site plan (PDF file) and vicinity map (same items expected in the application
package of the project location. Please include this form in the application package.
•
Asheville Region -Alison Davidson 828-296-4698;alison.davidson(a),ncdenr.gov Provided Existing Permits
related to this Project
• Fayetteville or Raleigh Region -David Lee 919-791-4203; david.leea(}ncdenr.gov
• Mooresville or Winston Salem -Marcia Allocco 704-235-2107; marcia.alloccoi _ncdenr.Qov SW 8970408
• Washington Region -Lyn Hardison 252-948-3842 or lyn.hardison(c}ncdenr.gov SW
SW
• Wilmington Region -Cameron Weaver 910-796-7303 or [e-mail] NPDES
NOTE: Project application received after 12 noon will be stamped in the following work day. NPDES G
NQ
Project Name: WQ
P1228 - BIRCH STREET ROADWAY IMPROVEMENTS County: ONSLOW E&S
Applicant: SCOTT LITTLEFIELD Company; NAVFAC MIDADLANTIC E&S 44\ o �,r
Address: 9324VIRGINIAAVENUE City: NORFOLK, State: VA Zip:23511-3624 Other
Phone: [phone], Fax: _ _ , Email: scott.g.littlefield@NAVY, MIL
Physical Location:BIRCH STREET, CAMP LEJEUNE
Project Drains into BEAVERDAM CREEK waters - Water ciassification SB; NSW (DWR Surface Water_ Classifications Map)
Project Located in WHITE OAK River Basin. Is project draining to class ORW waters? N, within 'Amile and draining to class SA waters N or within 1 mile
and draining to class HQW waters? N
EngineerlConsultant: BRIAN SCOTT CHEWNING Company: BURNS & MCDONNELL
Address: 1305 EXECUTIVE BLVD City: CHESAPEAKE, State: VA Zip: 23320 fC ram* Ei�VF
Phone: [phone], Fax: [phone], Email: [e-mail] 1�'d.w
PLEASE PROVIDE ESTIMATED INVESTMENT AND EXPECTED EMPLOYMENT, IF AVAILABLE APR 3a
$ # JOBS
SECTION ONE: REQUESTING A SCOPING MEETING ONLY
gY:
❑ Scoping Meeting ONLY ❑ DWR, ❑ DCM, ❑ DEMLR, ❑ OTHER:
SECTION TWO: CHECK ONLY THE PROGRAM (S) YOU ARE REQUESTING FOR EXPRESS PERMITTING
❑ 401 Unit ❑ Stream Origin Determination: _ # of stream calls - Please attach TOPO map marking the areas in questions
❑ Intermittent/Perennial Determination: _ # of stream calls - Please attach TOPO map marking the areas in questions
❑ 401 Water Quality Certification ❑ isolated Wetland (_linear ft or _acres)
❑ Riparian Buffer Authorization ❑ Minor Variance ❑ Major General Variance
® State Stormwater ❑ General ❑ SFR, ❑ SFR < t ac. ❑ Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility ❑ Other
❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Outlet Swales ❑ Off -site (SW (Provide permit #)]
❑ High Density. D eten tion Pond _ # Treatment Systems ❑ High Density -Infiltration — #Treatment Systems
❑ High Density -Bio-Retention _ # Treatment Systems ❑ High Density -SW Wetlands _ # Treatment Systems
❑ High Density -Other _ # Treatment Systems / ® MOD:® Major ❑ Minor ❑ Plan Revision ❑ Redev. Exclusion SW (Provide permit #)
❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
❑ Land Quality ❑ Erosion and Sedimentation Control Plan with >1 acres to be disturbed. (CK # & Amt. (tor DEQ use))
SECTION THREE - PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT (for both scoping and express meetingreguest)
Wetlands on Site ❑ Yes ❑ No
Wetlands Delineation has been completed: ❑ Yes ❑ No
US ACOE Approval of Delineation completed: ❑ Yes ❑ No
Received from US ACOE ❑ Yes ❑ No
For DEQ usr isnly
Fee Split for multiple permits: (Check k )
Buffer Impacts: ❑ No ❑ YES: <lacre(s)
Isolated wetland on Property ❑ Yes ❑ No
404 Application in Process wl US ACCE: ❑ Yes ❑ No Permit
Total Fee Amount $
SUBMITTAL DATES
Fee
I SUBMITTAL DATES
Fee
CAMA
$
Variance (❑ Maj; ❑ Min)
$
SW (❑ HD, ❑ LD, ❑ Gen)
$
401:
$
LQS
$
Stream Deter,_
$
NCDE:Q EXPRESS March 2016

Stormwater Management Narrative
prepared for
FY1 S P-1280B Birch Street
Road Improvements
Camp Lejeune, NC
Project No. 1374744
Hobby Shop Complex Phases I and II
Modification for Stormwater Permit
SW8-970408
4/22/2020
prepared by:
Burns & McDonnell Engineering Company, Inc.
Chesapeake, VA

TABLE OF CONTENTS
Pam
1.0 STORMWATER MANAGEMENT NARRATIVE................................................1-2
1.1 References............................................................................................................1-2
1.2 Design Approach................................................................................................. 1-2
APPENDIX A — STORMWATER PERMIT BOUNDARY EXHIBIT
APPENDIX B — USGS MAP
APPENDIX C —WET POND DESIGN CALCULATIONS
Burns & McDonnell

1.0 STORMWATER MANAGEMENT NARRATIVE
1.1 References
• UFC 3-210-01, Low Impact Development, with Change 1, 01 February 2016
• Technical Guidance on Implementing the Stormwater Runoff Requirements for Federal Projects
under Section 438 of the Energy Independence and Security Act (EISA 438), December 2009
• North Carolina Department of Environmental Quality (NCDEQ) Stormwater BMP Manual, 2018
edition
• North Carolina Administrative Code Section 15A NCAC 02H
1.2 Design Approach
The proposed widening of Birch Street requires modification to the high -density Hobby Shop Complex
Phases I and 11 Permit, SW8-970408. This will involve reducing the size ofthe existing islands at the
egress points onto Birch Street. The original permit, based on permit documentation provided by DEQ,
show the permit area to be 249,163 SF (5.72 AC) with 122,839 SF (2,82 AC) of impervious area. A
previous modification to the permit involved the reduction of the permit area by approximately 71.529 SF
(1.64 AC) with the creation of the Intel BN Interim Facilities, Permit SW8-080734, now referred to as the
trailer parking lot. This new permit removed roughly 3,364 SF (0,08 AC) of impervious area and
approximately 68,165 SF (1,56 AC) of pervious area from the Hobby Shop permit area.
To accommodate for the proposed roadway improvements, the permit boundary will be modified by
removing existing impervious area from the permit area and adding new impervious area associated with
the widening, As part of this permit modification, 7,019 SF (0.16 AC) will be removed from the permit
area and incorporated into the Wallace Creek Regimental Complex Phase l Roads Permit, SW8-090109.
This will also remove 4,232 SF (0.10 AC) of impervious area. The reduction in permit area is
accomplished by adjusting grades and adding catch basins and a valley gutter to direct runoff away from
the Hobby Shop stormwater facility. Since the Wallace Creek and Hobby Shop permit areas currently
overlap, the overall Wallace Creek permit area will not be increased. and the two permit areas will now
abut one another.
To avoid modifying the Wallace Creek permit area, 3.575 SF (0.08 AC) will be added to the Hobby Shop
permit area. This includes 2.1 l 1 SF (0.05 AC) of existing impervious area associated with two access
drives into the Hobby Shop parking lot. Since the contributing drainage area is being modified, a new
design volume calculation was performed for the 1" design storm. The 1" design storm was utilized
Burns & McDonnell

because the proposed BUA is within the original permitted BUA. In order to show that the existing wet
detention basin will not be negatively impacted, the new design volume was confirmed to not exceed the
available volume in the wet detention basin based on its design. A summary of the permit area
modifications is demonstrated below:
Original Permit Area: 249,163 SF (5.72 AC)
Original Impervious Area: 1221.839 SF (2.82 AC)
Area Removed / Absorbed by SW8-080734: 71.529 SF (1.64 AC)
Impervious Area Removed: 3,364 SF (0.08 AC)
Area Removed 1 Absorbed by SW8-090109: 7,019 SF (0.16 AC)
Impervious Area Removed: 4,232 SF (0.10 AC)
Present Permit Area: 170.615 SF (3.92 AC}
Present Impervious Area: 1 15.243 SF (2.65 AC)
Area Added to Permit: 3,575 SF (0.08 AC)
Impervious Area Added: 2. l 1 1 SF (0.05 AC)
Modified Total Permit Area: 174,190 SF (4.00 AC)
Modified Total Impervious Area: 117,354 SF (2.69 AC)
Drainage Area For Wet Detention Basin
Design Drainage Area = 5.72 AC
Design Impervious Area = 2.82 AC
Provided Volume = 32,441 CF
Proposed Drainage Area = 4.00 AC
Proposed Impervious Area = 2.69 Acres
New Design Volume = 9,525 CF
Burns & McDonnell

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APPENDIX C -WET POND DESIGN CALCULATIONS

BURNS`ME-DONNELL
WET POND DESIGN CALCULATIONS
Impervious Area Percentage
Total Area = 4.00 ac
Total Impervious Area = 2.69 ac
2.69 ac
% Impervious = = 0.673 = 67.3%
4.00 ac
Required Surface Area
67% Impervious & 4 f t Deep
SAIDA = 5.79%
SA _ (4.00 ac)(5.79)(43560 sf/ac)
100
SA = 10, 088 sf (required)
SA = 10, 750 s f (provided)
Design Volume
Rv = 0.05 + 0.91A = 0.05 + 0.9(0.673) = 0.656
DV = 3,630RDRVA = 3,630(1 in)(0.656)(4.00 ac)
DV = 9, 525 cf (required)
DV = 32,441 cf (provided)
Depth Required for I" Design Storm
DV (required) 9,525 cf
D— SA (provided) 10,750 s f 0.89 f t
Top of Outfall Weir
Top of Outf all Weir = Permanent Pond Elevation + D = 19.00 + 0.89
Top of Outf all Weir = 19.89 (required)
Top of Out f all Weir = 2 1. 50 (provided)
1317 Executive Blvd. \ Suite 300 \ Chesapeake, VA 23320
0 757-548-2056 \ F 757-548-2812 \ burnsmcd.com

BURNS ME-DONNELL
WET POND DESIGN CALCULATIONS
2 to 5 Dav Drawdown
Average Head = 1.25 f t (from previous design calculations)
Q = CA 2gh
Where: Q = drawdown flow rate (cfs)
A = Area of orifices = 3.00 in = 0.0208 sf (previous design calcs)
C = 0.60 (coe f f ecient for submerged orifice)
h = haverage = 1.25 f t (previous design calcs)
Q = (0.60)(0.0208 sf)V2(32.2 ft/sz)(1.25 ft) = 0.11197 cfs
DV (provided) 32,441 cf
T Q 0.11197 cfs 289,729 seconds
T = 3.35 days
Emergency Overflow Requirements
100 yr storm
@ Tc = 12.3 min (previous design calcs) - i10D = 8.79 in/hr
Q = CiA = (0.72)(8.79 in/hr)(4.00 ac) = 25.32 cfs
Depth on Weir to Pass i 00-yr Storm
L=weir Length =2(2.67ft)+4ft= 9.34ft
3/2 Q 2 5.3 2 cfs
h — 0.847
CL (3.2) (9.34 f t)
h=0.90ft
HWL100 = 21.50 f t + 0.90 f t
HWL100 = 22.40 ft
1317 Executive Blvd. \ Suite 300 \ Chesapeake, VA 23320
0 757-548-2056 \ F 757-548-2812 \ bu. nsmcd.com
2

&MSDONNELL.
CREATE AMAZING.
Burns & McDonnell World Headquarters
9400 Ward Parkway
Kansas City, MO 64114
816-333-9D
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www.burnsmcd.com

I
NQSA ,A

Hall, Christine
From: Chewning, B Scott <[e-mail]>
Sent: Thursday, June 25, 2020 10:57 AM
To: Weaver, Cameron; Hall, Christine
Cc: Barraco CIV Talia M; Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR (US);
Sargent, Mikala G; Stritzl, Stephen L (Steve); Littlefield, Scott G CIV USN NAVFAC
MIDLANT NOR (USA)
Subject: RE: [External] FW: Birch Street - Package 2 Express documents
Christine, Cameron and Kelly,
Thank you for meeting with us today. Below are my notes from the meeting. Let me know if there's anything I left out.
Enjoy the upcoming weekend.
Meeting Date: 6/25/2020 10:00 AM
Location: Microsoft Teams Meeting
Link to Outlook Item: click here
Invitation Message
Participants
Chewnin-.t. B Scott (Meeting Organizer)
Weaver, Cameron (Accepted in Outlook)
Stritzl. Stephen I. (Steve) -(Accepted in Outlook)
Mall, Christine (Accepted in Outlook)
I.Jttlelield. Scott G CIV USN NAVFAC MIDLANT NOR (USA)
Barraco CIV Talia M (Accepted in Outlook)
Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR US (Accepted ill Outlook)
Sar-,ent,_Mikala G (Accepted in Outlook)
Kelly Norris
Notes from the meeting:
• Additional information to be provide to Christine via email (2 hard copies of this information should be
submitted once it is confirmed that no additional information is required after Christine's review):
o BMcD will provide grades on the plan sheet to show the grade breaks that support the drainage
areas
o The narrative will be modified to address the fact that the permit was not modified to address the
trailer park project.
o The application needs to be modified to correct the previous modification date as well as the
project description.
o Under item #1 on the application, fix the project number to P1280.
o Updated sheets for the application can be slip sheeted. The base does not need to resign the
application.
o The submittal package requires the original sealed copy of the application. BMcD will confirm that
the original was sent.

o A note will be added on the specific playa sheet, not the overall plan, that there are no wetlands
within the limits of these improvements.
All requested information will be sent to Christine via email by Tuesday, 6/30.
Package was accepted as of 6/25/2020
Scott Chewning, P.E., LEED AP 1 Burns & McDonnell
Senior Project Manager I Department Manager
Land Planning & Design
0 757-819-97351 M 757-647-2308
bschewninn(a-)burnsmcd.com 1 burnsmcd.com [burnsmcd.coml
1317 Executive Blvd, and Floor 1 Chesapeake, VA 23320
O[linkedin.coml Offacebook.coml ©[twitter.com] I® [youtube.com] 0
fburnsmcdblog.coml v1"Y9*0*flinkedin.com]
Proud to be one of FORTUNE's 100 Best Companies to Work For
-----Original Appointment -----
From: Chewning, B Scott
Sent: Monday, May 11, 202011:00 PM
To: Chewning, B Scott; Weaver, Cameron; Stritzl, Stephen L (Steve); Hall, Christine; Littlefield, Scott G CIV USN NAVFAC
MIDLANT NOR (USA)
Cc: Barraco CIV Talia M; Schmitt, Christopher L CIV USN NAVFAC MIDLANT NOR (US); Sargent, Mikala G
Subject: [External] FW: Birch Street - Package 2 Express documents
When: Thursday, June 25, 2020 10:00 AM-11:00 AM (UTC-05:00) Eastern Time (US & Canada).
Where: Microsoft Teams Meeting
As mentioned in Cameron's email below. This is a placeholder for a virtual meeting to discuss this permit. If
circumstances change and we're able to meet in person, I'll update this meeting request accordingly. Thanks.
Join Microsoft Teams Meeting [tea ms.microsoft.coml
f 1 816-298-0271 United States, Kansas City (Toll)
Conference ID: 226 534 533#
Local numbers fdialin.teams.microsoft.coml I Reset PIN [mysettings.lync.coml I Learn more about Teams raka.msl
Meeting options _[tea ms.microsoft.coml
From: Weaver, Cameron <[e-mail]>
Sent: Friday, May 8, 2020 1:04 PM
To: Stritzl, Stephen L (Steve) <slstritzl@burns mcd.com>; Hall, Christine <[e-mail]>; Chewning, B Scott
<[e-mail]>; Littlefield, Scott G CIV USN NAVFAC MIDLANT NOR (USA) <[e-mail]>
Cc: Barraco CIV Talia M <[e-mail]>
Subject: RE: (External] FW: Birch Street - Package 2 Express documents
Hi all

Hall, Christine
From: Hall, Christine
Sent: Friday, January 10, 2020 12:49 PM
To: [e-mail]; [e-mail]; [e-mail]
Cc: Hardison, Lyn; Zorda, Garrett D
Subject: RE: P1228 - BIRCH STREET ROADWAY I M PROVE M ENTS-SW8970408 Mod - Hobby Shop
Mr. Stritzl,
The following question is specific to the proposed modification to SW8 970408:
1. The narrative talks about specific storm events and pre/post discharge. Please note that the state stormwater
rules requires the runoff from any increase in BUA to be treated at the current design storm (1.5" for non -SA
waters). For comparison, the BUA originally approved under this permit (122,839 sf) is only required to treat the
first 1.0" of runoff. Will the revised calculations and supplement be based on these design storms?
Please note that any changes to the drainage areas or BUA allocations will require updated calculations to demonstrate
the new minimum required storage volume and updated supplements to document the revised condition. If the
drainage area is changing, an updated drainage area map would also be needed. For SCMs that were permitted prior to
the 2017 rules, the archived supplements (found here) should be used.
Christine Hall
Environmental Engineer
Division of Energy, Mineral and Land Resources — State Stormwater Program
Department of Environmental Quality
910 796 7215 office
910 796 7335 direct
christine. hall(a)ncdenr.gov
127 Cardinal Drive Ext,
Wilmington, NC 28405
AC;--_ :"Nothin9 Compares —,—
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Hardison, Lyn
Sent: Wednesday, January 8, 2020 2:15 PM
To: Hall, Christine <[e-mail]>; Scott, Georgette <[e-mail]>; Zorda, Garrett D
<[e-mail]>
Subject: P1228 - BIRCH STREET ROADWAY IMPROVEMENTS-SW8970408 Mod - Hobby Shop
Lyn Hardison lyn.hardison@ncdenr,gov
Environmental Assistance and SEPA Coordinator
NC Department of Environmental Quality
Division of Environmental Assistance & Customer Services (DEACS)
Washington Regional Office

943 Washington Square Mall
Washington, NC 27889
Phone: [phone]
Fax: [phone]
DEACS.NCDENR.gov
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed tc third parties.