20081244 Ver 1_More Info Received_20080926

S?.G.0
Southern Environmental Group, Inc.
5315 South College Road, Suite E
Wilmington, North Carolina 28412
910.452.2711 (office) • 910.452.2899 (fax)
Date: 24 September 2008
To: Mr. Chad Coburn
Of: DWQ

SEGi Project #: 07-120.01
Client Name: Stevens Home Investments
USAME Action ID#:
Transmittal Letter (,C ?
? r
low
A?
S-P2, 208
Attached you will find:*
? Proposal ? Sketch(es) ? Permit ? Signed Wetland Map ? Photo(s)
? JD Package ? Report(s) ? Plans ? Information Request N Other
Copies Dated Description
1 22 Sept 2008 Response letter to phone conversation with Kim
These are being delivered:
N For your Review/Comment
? Corrected and Returned
? Other:
'If noted items are NOT attached, please contact our office.
? For your Records ? Returned for Correction(s)
? For your Signature ? As Requested
By: ® Hand Delivery ? Fed-Ex ? UPS ? Regular Mail ? Other
Notes:
Chad:
Attached is a copy of a response letter that was sent to Kim earlier in the week, for the Pinnacle project. I am also mailing a copy of this
package to Ian, in additon to providing him with the preservation documents. Let me know if you have any questions...
Signature and (Typed) Name: +V\Qc*?
Amanda L. Kolb
Date: 09/24/08
gout ern Environmental Ciroup, Inc.
5315 South College Road, `juite E. - Wilmington, North Carolina 28412
910.+52-2711 - rax: 910.452.2899 • of [e-mail]
www.segi.us
22 September 2008
Hand Delivery
Ms. Kimberly Garvey
USACE - Wilmington District
PO Box 1890
Wilmington, NC 28402
RE: Pinnacle Townhomes
Supplemental Information
SAW-2008-2435
Dear Ms. Garvey:
[SEGi Project #: 07-120.011
This letter is in reference to information requested in a telephone conversation between you,
David Syster and Amanda Kolb. The information contained within this letter has been obtained
from Hanover Design Services and Tripp Engineering. Your concerns are outlined, and
addressed, below:
1. Can Impact Area 4 be "tightened up" at all? If not, please provide an explanation
as to why the road must remain 80 feet in width.
Attached is a typical cross-sectional drawing of Mallory Creek Drive. According to both
the surveyor and engineer, the 80 foot right-of-way is necessary, to allow for the
construction of the roadway, the installation of the utilities, the construction of sidewalks,
bike paths and roadside swales.
2. Is there a median proposed for the length of Mallory Creek Drive?
A median is not proposed for the length of Mallory Creek Drive. There is a median
proposed at the entranceway off NC 133, but it does not run the length of the subdivision.
3. On Cross-sections 1 and 3, is there adequate room to accommodate both the "ditch
beyond" and "3:1 slope" shown? If water collects in the ditch, will it erode the 3:1
slope?
The engineer has stated that there is adequate room to accommodate both the ditch and
the slope, as shown on the submitted cross-sections. According to the engineer, "the spot
elevations on either side of this wetland impact are high points, therefore no water should
SEGO
collect on this end of the roadside swale". The engineer has provided revised cross-
sectional drawings, to show the spot elevations discussed.
4. It appears that a corner of a wetland may be impacted by the road right-of-way on
Cross-section 3. Please clarify whether or not this is an impact.
According to the surveyor, the wetlands in question are approximately two feet off the
back of the sidewalk. Neither the surveyor, nor the engineer, feel a wetland impact will
occur in this area. In fact, a waterline was relocated in the planning process, to avoid
impacting this wetland corner.
5. Please place Permanent Impact Area 2 and Temporary Impact Area 2 on the same
cross-sectional drawing, versus having them on two separate pages. In addition,
please revise the cross-section to reflect the profile of Section B-B - the drawing
provided appears to be a profile of the other direction.
The engineer has placed both the temporary and permanent wetland impacts on the same
cross-sectional drawings. According to the engineer, the profile of Section B-B was
drawn correctly in the first submittal - the engineer stated that the cross-section shows
two drop inlets on either side, as the section line should indicate on the zoom shot.
6. Finally, on Cross-Section 2, what is the thin line surrounding the wetland complex?
Is it a buffer? Is it where silt fence is proposed? A corner of the proposed sidewalk
infiltrates this thin line, and the Corps needs to know what it represents, to
determine if an additional impact request is warranted.
The thin line surrounding the wetland complex represents where silt fencing will be
installed. The engineer revised the line-types, to allow for easier differentiation.
Please review the responses above, and for further clarification, see the documents attached. If
you have any questions or concerns, please feel free to contact our office at 910.452.2711.
Thank you, in advance, for your time.
Sincerely,
4Y)CA)_
Amanda L. Kolb
Environmental Consultant
Enclosures: 1) Typical Cross-Section of Mallory Creek Drive
2) Revised Cross-Sectional Drawings of Proposed Impact Areas
?J
` D
00
D

J
Q
U
Z
0
? Z
? O O
CI
Li-i ? O Q
ti
L-Li
Z O
U
O Lu J
Z Q:? /m^
r ` CL
LLJ
? LZ
W ?C
C) z
z? ?v°v

00
S
L-Li
Q)

O
CI1
C?
rr^^?
VJ?
M?
J

LLJ
Q
C
v
Q
CL

/ 00

? I
J
Co
W
??

"
? z
o
F-
w Ln
O
m

DO I
-

0

CL
O
Q?
v /O
y
a.
Z LL-
O W L
? Q
CL
C
LLJ O
i C
Ir
u `
"G CNr Ply JY{
gpGG ?r a s >; t
?? ????//???4L n^? ?I? Vff10HY3 RMOH \\??\11111111////, 00
11O3 x3lA?Q1????//?? N /?ii?llrQ 1? ?p ??r?
o
S L W 00
Hco "C
N1VlOS ?'ID?'?INId
Z ? W
U
N
LL.
V
I
N
y
< J
?U_
W LL
00
N ?
N J
N
N
i

I Ijll I

•J

` !
ill I
.1 ill !I
{. I
I I II I j l

i
III I
I
{ ?

I l ? I I
I
III
1 I I
Ill i i
j

{I
1
1 I1
t 11
1 Jill
i
I i ;II ??
I
I I
! I I,I I I
( it i
? ? ij I ' f) l?fl I ??

I I

ii

l;'
II

j j
. ? t t"

i' 11 it
44-
I I;l
N N
a s
00
c
d
A
O
+' U
V (no
Z c)
CCC
a ? ? C5
q
10 rt
c
0
u
I

t-?
??'rtP
YNTIOHVO HINOH t t t l t /, ao
,?
AJAnOJ X31ASNaNg 'QAiV'M
S _ W^ 0
MOHN1 01 rjgDVNNId ?: N Z
11 *ON YM Jovala
u `W
m
J O
J
N
_ ? C7
NO V)
co ::
0- N X
U •- y
cr [j
W Lj
U
Z) M
3::
Z m to
U? W
J
W
LL- O?F-
z°LL-
OWO
?= m
O
O
W JZr-
O
U

,?
?r N
M
_j 0
uj 4 ?zIf)

V) H
LLI
? °
°
o6 cnz3

O
i WJ2

?QF-Z
3
W
U- ?
O ° OOMOO
z F- J Q

O ~
w

i
i
p

? I

g

i

I I
II?'
I.L.
' I
i (! I
I.
IF
? f
I
I

i
i
I

I
1 S1
I

i
I
`
?

a.
'I

-
i I
Ii i
! I
II

i
I I
I?
i i
i!

li
I-

?. j.i
'
I i i

I.

I?
'
j

C I ,i

il-

t
i I
i '( I
? I ,
II
Ld
U
C
N 0
' N it)
` d
O
{ W
v =
rn
U
a O
c?
0
c.
U
0 08
0
s
Zmoo
? '00
a?0
U. q a
d'?aw®
R;
?° u k f--' ? ?'
VNIOHVO Hmox
Cid 0
rLI3VKKId
Z
x2tV8OMM QNV UUKVI[2I a -2 'OH Vim 13V(U[I
M M
ON?
Z >
? Z
x ?- x
04
I
?Z 04r-d
\ a?ui
J
Q
N
Q

?U z 6 11,
OU
Q

En
a.
?r w 00 :2

U,
?;
W ;
3i
c
3?¢
U
N
00
J vc
W
a_
O
J
M
W
1 J
L? ! rf

I '

C
f i
I
?
I

I f
i
i

??f rd i
F ?
I
0
N N
C LL.
/?' 0
1 \ / N
> W
N
GU
a s
cS °°
O
w'' U
?,q om
C 1
q0
Co
aU? m
a ?
??aw®

ri
s
S
J

ag ? 1`rJ•io
i ,;I (1) ? 1 -01t
GZ z d S
B's'y
I-j
VWIOHV0 HMOK I foil,, 00
DV1??IId
z. Z z rd
???In ?? D D
LL. w
O
z ?,-

m
>Q ?
,>jF-0
Zo
W
?-j°°a
OQwz
oN~g

z3
= < F-
z
LLJ
;I?WU
l
f-w3-3
1 Z?-0¢

ROW"
F-

77 W
3
- -TI /
U)
/40
l+
a.
T
-

z
w
m
O
rn

-?r

6
z
2
V)
N
' i
ii
!
-F-r i ? '-I • i i r ?!-? 1 ?
M N N,
w
J
U
a s
C%I
c?
0
+' U
on
V U? C 8
Z C7 Q1 a
ayooo
U? y a
q R
w? aw®
I
•ioV o