20120270 Ver 2_401 Application_20121012

DIAL CORDY AND ASSOCIATES INC. 14x- ID �'� ° U2,
Environmental Consultants
490 Osceola Avenue LETTER OF TRANSMITTAL
Jacksonville Beach, FL 32250
904 - 241- 882'Fax 904 - 241 -8885
TO: NC DWQ, 40IMetlands Unit
Attn* Ian McMillan
1650 Mail Service Center
Raleigh, NC 27699 -1650
WE ARE SENDING YOU X]Attached via FedEx
THE FOLLOWING ITEMS:
Shop drawings Prints
Copy of correspondence 11 Change order
DATE 1019/2012 1PROJ. NO J12 -1210
ATTENTION
SUBJECT
under separate cover via
OTracings
Samples
Contract documents
other:
12 @ [2 9 W [2 1
DST 1 1 2012.
COPIES DATE DWG NC DESCRIPTION
5 Permit modification request for SAW- 2010 -01797 / DWQ Project #2012 0271
DWQ Project #2012 02701 Onslow County
THESE ARE TRANSMITTED as checked below -
For review and concurrence E] For review and comment ❑ Resubmit copies for review
For your information Returned for corrections Submit copies for distribution
As requested _ Prints returned after loan to us Return corrected prints
No exception taken may be used as submitted 1:1 Exceptions as noted may be used subject to comments
REMARKS:
If enclosures are not as noted, please advise us at once. Signed: Jason Evert
1.

DIAL CORDY
AND ASSOCIATES INC
Enuironmental Consultants
4 October 2012
Mr. Brad Shaver
Project Manager
USACE Wilmington District
CESAW- RG(1145 -b)
69 Darlington Ave
Wilmington, NC 28403
I a -va ?o u a-
LNn T 1 1 2012
ob .....
AT� _
RE: Modification Request for
Action ID No. SAW- 2010 - 01797/ Department of the Army Permit
New River Marine Corps Air Station, Camp Lejeune, NC 28542 -0004
Dear Mr. Shaver,
Dial Cordy and Associates is in receipt of document 2012- 08 -08- 130225 dated 15 August 2012 and
your email (request for additional information) sent Monday, 10 September 2012 at 12:36 PM
pertaining to the above project. We sincerely appreciate your efforts on both counts, and have made
revisions and additions to our submittal to clarify our request.
Overview of Modifications. At this time, we have secured the necessary topographic data and
engineering plans to provide additional details regarding Phases II and III of the project, and are also
able to update Phase I. Phase I changes include the identification of a previously unanticipated,
small, wetland impact where an ephemeral ditch empties to Wetland 5 (W5) and some additional,
necessary grading near Wetland 4 (W4). Previously anticipated impacts to wetlands in Phases II and
III have been minimized to the maximum extent practicable; in fact, one impact of 0.24 -acre has
been completely avoided. With - project- condition cross - sections of wetland impacts areas are shown
in attached Figure 9, and the positions of these cross - sections are shown in planview in Figure 10. In
addition, the applicant's engineer has provided planview sheets (in electronic format) showing
construction details, from which the various frames in Figure 10 were transcribed.
Avoidance and Minimization. Also, due to avoidance and minimization efforts, project engineers
have been able to achieve an overall decrease of 1.09 acres of wetland impacts throughout the
project area. Below is a summary of proposed changes for each phase of the project (acreages are
not necessarily impacts that will require mitigation).
Summary of Changes in Wetland Impact Both Temporary and Permanent Areas
Phase
Initial (ac)
Modified (ac)
Difference (ac)
1
0.80
0.82 1'2
+0.02
I I
0.56
0.14
-0.42
III
1.20
0.51
-0.69
Project Total
1 2.56
1.47
-1.09
'207 linear feet of permanent impact to Wetland 4 intermittent stream is anticipated for this phase
234 linear feet of permanent impact to Wetland 5 intermittent stream is anticipated for this phase

�1)
For the Phase I portion of the project, it has of late been determined that the proposed and
necessary alignment of north - south - oriented Longstaff Road (see revised Figure 4, road feature
outlined in red) will, in fact, result in permanent impacts to Wetland 5 of up to 487 square feet. This is
due to the close configuration of the southeast comer of the proposed hangar and its south access
road, the proposed squadron warehouse, and the large swale that runs east -west between the
hangar and warehouse positions. Essentially, the intersection cannot be moved farther to the west
due to the previously existing swale /ditch (not readily visible in revised Figure 5), which will continue
to serve a significant water management function post- construction. The resulting impact, including
34 linear feet of intermittent stream, has been minimized as much as possible. Finally, additional
topographic data indicate the need for further grading at the impact site in Wetland 4, resulting in
0.01 ac additional permanent impacts and 0.01 ac temporary impacts.
For the Phase II portion of the project (see attached Figure 7; Figure 6 from the initial submittal
has not changed, and is not referenced in this request), impacts were minimized primarily by
keeping the position of the perimeter road (actually named "Perimeter Road ") as far from the large,
contiguous wetland to the south (W7) as possible. However, the roadway must be far enough from
the proposed runway /over -run extension to comply with UFC (Unified Facilities Criteria) 3- 260 -01,
which dictates that a roadway cannot be placed within 500 feet (parallel, i.e., next to) of the active
runway or its "over- run." Furthermore, if a fence is placed at the perimeter, it must be placed seven
feet farther away from the runway /over -run for each foot of the fence's vertical height. Hence,
roadways (which must be placed outside the perimeter fence) cannot be moved any farther from the
wetlands and still be in compliance with the UFC. Variances to the UFC are not available to
decrease the resulting 570 -foot minimum distance in this case (see below for a case where a
variance was approved). Due to revised roadway position and minimizing fill for grading, impacts to
wetlands W9 (not under federal jurisdiction) and W7 (impact formerly designated as W7 -1, now
simply designated as W7) were minimized by a combined 0.42 acre compared to the applicant's
original proposal. The remaining necessary impacts are due to fill for road grading, which has been
reduced in lateral coverage to the maximum extent practicable.
For the Phase III portion of the project, previously proposed impact W7 -2 (of 0.24 acre) has been
completely avoided (this was near the "fire circle," a circular, paved feature visible in Figure 4's aerial
photography), due to a repositioning of the Perimeter Road slightly to the east. Perimeter Road near
Wetland I (i.e., "i ") is proposed for realignment in accordance with UFC 3- 260 -01 (i.e., 500 feet clear
distance +7:1 -foot allowance for a perimeter fence), which results in impacts to Wetland I. Because a
future project phase (to be completed between approximately 2014 and 2016) will extend the
western runway /over -run to the southwest (to address the airfield operational design considerations
in the NATOPS Flight Manual for MV -22s and also to fulfill UFC 3- 260 -01 requirement for 1,000 -ft
over -runs on all Navy and Marine Corps runways), the proposed Perimeter Road will need to be
realigned again in a few years to run parallel to the future runway /over -run, heading farther to the
southwest before turning to the northwest around the end of the over -run (a graphic of this will be
submitted under separate cover). In the interim, the roadway will be temporarily configured to
balance aviation safety and wetland protection; the UFC clear distance is observed for as much of
the roadway as possible, but the corner of Perimeter Road near impacts Wi -1 and Wi -2 (see Figure
8) will not involve a 90- degree turn, but instead a graded turn. The sharper - angle -turn alternative
would have had approximately 100% more impacts to wetlands due to installing the necessary
grading along two road segments that together are longer (and closer to the wetland) than the
proposed single reach. To achieve this reduction of impacts, a temporary exemption from the UFC
was allowed, but just for the turn /corner area. This will allow for at least a temporary preservation of
approximately 0.75 acre of wetland functions for the habitat area that would have been impacted by
a 90- degree corner positioned 570 feet from the existing over -run. The combined wetland impacts
for Phase III have been minimized from the original plan by 0.69 acres and further reductions are not
practicable or possible given engineering and aviation /transportation safety concerns.
Page 2 of 4
Request for Modification of SAW- 2010 - 01797/ 4 October 2012

As can be seen on the following page, Tables C.2 and C.3 from the initial application package
(which were previously revised 16 July 2012 and submitted to regulatory staff) have been revised
again, as of 27 August 2012, to include the modified impact acreages for Phases II and II (and
Phase 1).
Mitigation. Mitigation for unavoidable impacts to wetland and stream habitats will be provided. In
accordance with "the Mitigation Rule," which states that private or public mitigation banks are
preferred over programs such as NCEEP, the applicant proposes to utilize Bachelor's Delight
mitigation bank for mitigation purposes. We are in correspondence with the manager of the property
to determine availability and suitability of mitigation. To date, the applicant has mitigated for 0.62
acre of wetland impacts and 207 linear feet of stream impacts. In addition to providing mitigation for
those impacts, the applicant will provide funds to these banks in order to offset an additional 0.58
acre of permanent wetland impacts and 34 linear feet of permanent stream impacts. We understand
that use of off -site banks (Bachelor's Delight) would result in the application of a mitigation ratio of
2:1. We are currently exploring whether the impacts at Wetlands 7 and 9 could be mitigated at a
ratio less than 2:1 due to having been previously impacted. Related information will be provided
under separate cover.
We appreciate your efforts on behalf of federal regulatory compliance for this important project.
Should you have any questions regarding the above, please contact me at (904) 476 -9571 or
[e-mail] at your earliest convenience.
Best Regards,
Jason Evert
Senior Ecologist
ENCL: 4 figures, color, 11x17"
2 figures, b &w, 11 x17"
Engineering drawings (pdf)
Page 3 of 4
Request for Modification of SAW- 2010 - 01797/ 4 October 2012

Tables C.2 and C.3 REVISED 4 October 2012
Table C.2.
*Isolated wetland; not under federal jurisdiction
Table C.3.
Z V
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V1 L
�v�
Qi
L
Q
I
W4P
Permanent
Forested
No
0
0.63 ac
I
W4T
Temporary
Forested
No
0
0.19 ac
I
W5P
Permanent
Forested
No
0
487 sf
I
W5T
Temporary
Forested
No
0
351 sf
II
W7P
Permanent
Forested
No
180
0.11 ac
II
W7T
Temporary
Forested
No
180
237 sf
II
W9*
Permanent
Forested
No
540
625 sf
II
W9*
Temporary
Forested
No
540
500 sf
III
MAP
Permanent
Forested
No
100
0.43 ac
III
Wi -1T
Temporary
Forested
No
100
0.05 ac
III
Wi -2P
Permanent
Forested
No
15
0.02 ac
III
Wi -2T
Temporary
Forested
No
15
515 sf
Permanent Wetland Impact Subtotal
1.2155 ac
Temporary Wetland Impact Subtotal
0.2768 ac
Total Wetland Impact (acres)
1.4923 ac
*Isolated wetland; not under federal jurisdiction
Table C.3.
Page 4 of 4
Request for Modification of SAW- 2010 - 01797/ 4 October 2012
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207
0.0143
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R12(ED)
n/a
Permanent
Ephemeral
n/a
n/a
n/a
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n/a
Permanent
Intermittent
3'
34
0.0023
Total Stream Impact (by length and acreage)
241
0.0166
Page 4 of 4
Request for Modification of SAW- 2010 - 01797/ 4 October 2012

>1
Parallel Taxiway
FOR OFFICIAL USE ONL
imlEphemeral Ditch
Ephemeral Ditch
Apron
NN 7
FOR OFFICIAL USE ONLY
Legend
PHASE ID
PHASE I
PHASE 11
PHASE III
Surface Water Course Centerline
Wetland Area
0 750 1,500 2,250
FOR OFFICIAL USE ON

FOR OFFICIAL USE ONLY
W4T, 0.18 acres
W4
,Constructed Bulkhead
I FOR OFFICIAL USE ONLY \ "
v V" W5P, 0.01 acres
Proposed Feature Line
PHASE I
Type of Wetland Impact
Permanent
Temporary
Phase I Stream Impact Area
Wetland Area
0 150 300 450 600
Feet
FOR OFFICIAL USE ONL

FOR OFFICIAL USE ONLY
W7
PROPO;
RUNWA
FOR OFFICIAL USE ONLY
Legend
Proposed Feature Line
PHASE ID
PHASE II
PHASE III
Type of Wetland Impact
Permanent
Temporary
Wetland Area
LL 150 300 450 600
Feet
W9T, 0.01 acres
FOR OFFICIAL USE ONLI
FOR OFFI
Mr,

OR OFFICIAL USE ONLY
R
WI -2P, 0.02 acres
FUTURE PHASE
_. OVER -RUN EXPANSION AREA
WI -2T, 0.01 acre
Wit. tLf
y
SR OFFICIAL USE ONLY
Legend
OVER -RUN
Proposed Feature Line
PHASE ID
— PHASE III
Type of Wetland Impact
Permanent
® Temporary
Wetland Area
0 150 300 450 600
Feet
FOR OFFICIAL US
,.- _�.;,� s: i � Cam. ^-n •`�:A
R
WI
�� OR OFFICIAL ON
g - a �.
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r,
F O USE
k' . - I I I I t..
m�
RS
Phase III Proposed Structure Impacts
PRE- CONSTRUCTION NOTIFICATION APPLICATION
MCAS NEW RIVER, CAMP LEJEUNE, NORTH CAROLINA
Scale: 1 inch = 150 feet
Drawn By: MR
Date: August 2012
Approved By: JE
DIAL CORDY
ANSI ASS0CI ATE. s IN C.
Fl llvir(nvne) licit r'r,r>_cuNcnuv
J10-1210
FIGURE8

C/L LONGSTAFF
SEEDED SIDE BANK
STREET
I
2' PAVED
12' SEEDED
SHOULDER
SHOULDER
(TYP)
16'
11' TRAVEL I
SEEDED
6' SEEDED
HUD
SHOULDER
DTH
12' TRAVEL (TYP.)
VARIES
LANE TYP.
MATCH EXISTING
GRADE
ASPHALT PAVEMENT
STRUCTURE
16" WATER
DBL 36" RCP
RIPRAP PAD
�- EXISTING WETLAND LINE
NEW WETLAND LINE
TEMPORARY WETLAND
IMPACT LINE
467 SF 351 SF
AN 7 TEMPORARY
VETLAND I WETLAND
IMPACT IMPACT TO
,BE RESTORED
MATCH EXISTING
GRADE
WETLAW S CROSS SECTION
EXISTING WETLAND LINE
C/L PERIMETER NEW WETLAND UNE
ROAD
TEMPORARY WETLAND
IMPACT LINE
SWA WIDTH VARIES;
6' SE D S B TTOM AN 2'
SHOULDER UP EACH SIDE BANK
11' TRAVEL (TYPO (TYPO;
U1NE TYp SEED REMAINDER OF
SIDE BANKS (TYP.)
.0% ,
I
MATCH [XISTING
ASPHALT PAVEMENT S00 (TYP 2' GRADE
STRUCTURE TYP.
625 SF 500 SF
_TEMPORARY
WETLAND WETLAND
IMPACT IMPACT TO
BE RESTORED
SWALE WIDTH VARI
SOD BOTTOM AND
UP EACH SIDE BA
(TYP.);
SEED REMAINDER
SIDE BANKS (TYF
MATCH EXISTING
GRADE
SOD
PERIMETER SECURITY FENCE
SEEDED SIDE BANK
C/L PERIMETER
I
ROAD
12' SEEDED
SHOULDER
6' SEEDED
22 RDnowAr SHOULDER
(TYP)
16'
11' TRAVEL I
11' TRAVEL -
(TYP.)
WETLAND 7 CROSS SECTION
EXISTING WETLAND LINE
0.43 AC. PERMANENT WE
PERIMETER SECURITY
FENCE
SWALE WIDTH VARIES; 12' SEEDED
SOD BOTTOM AND 2'
MATCH UP EACH SIDE BANK (TYP.)
EX (TYP.); 10
ISTING '
SEED REMAINDER OF
GRADE
ISIDE BANKS (TYP.)
D7�
2'
TYP.
SOD (TYP.)
ASPHALT PAVEMENT
STRUCTURE
EXISTING WETLAND LINE
NEW WETLAND LINE
/— TEMPORARY WETLAND
/ IMPACT UNE
0.11 AC. 237 SF
7RMANENT TEMP RARY
NETLAND WETLAND
IMPACT IMPACT TO
BE RESTORED
NEW WETLAND LINE
C/L PERIMETER
ROAD
EXISTING
0.05 AC
TEMPORARY
WETLAND
IMPACT TO TEMPORARY
BE RESTORED WETLAND
IMPACT UNE
SHOULDER
SEEDED SIDE BANK
11' TRAVEL (TYPO
I
LANE (TYP.)
Approved By: JE
.0% 4.05
J12-1210
FIGURE 9
ASPHALT PAVEMENT
STRUCTURE
MATCH EXISTING
GRADE
WE LAND 9 CROSS SECTION (N.T.S.) W WETLAND 1 -1 CROSS SECTION (N. T. S.) `Ta
EXISTING WETLAND LINE r—
C/L LONGSTAFF
STREET NEW WETLAND LINE
2' PAVED
SHOULDER TEMPORARY WETLAND
1 SEEDED IMPACT LINE
6' SEEDED HL
SHOULDER 9DTH
12' TRAVEL (TYP.) VARIES
LANE TYP.
0.01 AC.
2.O X D.02 AC PERMANENT TEMPORARY'
WETLAND IMPACT TLANDS
R IMPACT TO
IBE RESTORED I
ASPHALT PAVEMENT
STRUCTURE
❑BL 36" RCP
MATCH EXISTING
RIPRAP PAD GRADE
WETLAND I —Z CROSS SECTION (N.T.S.)
X
WITH- PROJECT CROSS - SECTIONS
AT AFFECTED WETLAND AREAS
PROPOSED MODIFICATION TO SAW- 2010 -01797
DWQ Project #2012 0270, MICAS NEW RIVER NC
Not To Scale
Drawn By: TL (Haskell)
Date: October 2012
Approved By: JE
DIAL CORDY
1 n r.n - dnuu.
J12-1210
FIGURE 9

G
16 1 ST
7T \
O �l
}
I 5I
r..
1 \
+
�� I o
524+5361
j
i
I j
KEY DIAGRAM FOR WITH- PROJECT CROSS - SECTIONS
AT AFFECTED WETLAND AREAS
PROPOSED MODIFICATION TO SAW- 2010 -01797
DWQ Project #2012 0270, MCAS NEW RIVER NC
Not To Scale
Drawn By: TL (Haskell)
Date: October 2012
Approved By: JE
ANI) VSS o (:I. -V ES INC
—m DILL_ CORDY
I ,
J12 -1210
FIGURE 10
ui
(D'
1
k
00
J
O
71
O
i
-- - PERIMETER ROAD
-- -�-- -- - 63 00-
635+00 634 +00