15019_Norfolk Southern Intermodal_O_2015_12_16

Via Email
December 16, 2015

NCDEQ
Division of Waste Management
Brownfields Program
1646 Mail Service Center Raleigh, NC 27699-1646

Attention: Ms. Carolyn Minnich

Re: Revision to Impacted Soil Delineation Area Proposed CATS Maintenance Building Facility
Former Norfolk Southern Intermodal Facility
Brownfields Project No. 15019-11-60
Charlotte, North Carolina
H&H Project No. CAT-003
Dear Carolyn:

On February 20, 2015, Hart & Hickman, PC (H&H) submitted a letter on behalf of the City of
Charlotte documenting soil and groundwater results for the Former Norfolk Southern Intermodal
Facility (site). A Site Location Map is included as Figure 1. In the February 20, 2015 letter,
soils were defined as impacted by containing any presence of contaminants including metals at
concentrations which exceeded 2x the background mean. H&H indicated on the letter’s included
Site Map where soils should be managed as impacted or non-impacted.

As summarized in Table 1 of the February 20, 2015 letter (attached for reference), the soil
sample collected from soil boring DPT-50 did not contain detections of contaminants or
concentrations of metals greater than 2x the background mean. Therefore, this soil is not
considered impacted. H&H originally included a Site Map, based on preliminary maintenance
building plans, depicting the area surrounding DPT-50 as being in the indicated impacted area
for the excavation contractor’s convenience to prevent construction slow-downs.

Because a significant amount of impacted soil has already been disposed from the subject site,
H&H has re-evaluated the area previously indicated as impacted on behalf of the City of
Charlotte to reduce construction costs. Based on our evaluation, we have included a revised Site
Map for your review. The revised Site Map depicts the area surrounding DPT-50 as non-
impacted and includes the final maintenance building plan footprint.
Ms. Carolyn Minnich
December 16, 2015
Page 2 of 2

\\hhfs01.harthickman.local\masterfiles\AAA-Master Projects\Charlotte Area Transit System (CAT)\CAT-003 BLE\NSIF Assessment\New Building Plans\Report\DEQ Letter Revising Impacted Area\final building plans letter\Draft Cover Letter to DENR.docx

H&H has also revised the Soil Management Plan figure, included as Figure 3, which provides a
zoomed out view of the area near the maintenance building and beyond. H&H will field screen
the soils removed from the DPT-50 area for indications of impacts. If indications of impacts are
observed, the soil will be managed and disposed as impacted soil.

If you have any questions, please feel free to contact us at 704-586-0007.

Sincerely,
Hart & Hickman, PC

Jeff Albano, PG Matt Bramblett, PE
Project Geologist Principal

Enclosure
cc: Mr. David Wolfe, PE, City of Charlotte (via email)
Mr. Doug Pierotti, PG, City of Charlotte (via email)
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x
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2
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t
h
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B
a
c
k
g
r
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d

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t
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l
s

M
e
a
n
VO
C
s

=

v
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l
a
t
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l
e

o
r
g
a
n
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c

c
o
m
p
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u
n
d
s
;

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V
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C
s

=

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e
m
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-
v
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e

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c

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m
p
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n
d
s
;

T
P
H

=

t
o
t
a
l

p
e
t
r
o
l
e
u
m

h
y
d
r
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c
a
r
b
o
n
s
;

PC
B
s

=

p
o
l
y
c
h
l
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r
i
n
a
t
e
d

b
i
p
h
e
n
y
l
s
;

m
g
/
k
g

=

m
i
l
l
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g
r
a
m
s

p
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r

k
i
l
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g
r
a
m
NS

=

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c
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n
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n
g

c
r
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a

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t

s
p
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c
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f
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d
;

N
A

=

n
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t

a
n
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l
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z
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d

(
G
r
e
y
)
;

-
-

=

N
o
t

a
p
p
l
i
c
a
b
l
e
Sc
r
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e
n
i
n
g

C
r
i
t
e
r
i
a

S:\
A
A
A
-
M
a
s
t
e
r

P
r
o
j
e
c
t
s
\
C
h
a
r
l
o
t
t
e

A
r
e
a

T
r
a
n
s
i
t

S
y
s
t
e
m

(
C
A
T
)
\
C
A
T
-
0
0
3

B
L
E
\
N
S
I
F

A
s
s
e
s
s
m
e
n
t
\
N
e
w

B
u
i
l
d
i
n
g

P
l
a
n
s
\
M
a
i
n
t
e
n
a
n
c
e

B
u
i
l
d
i
n
g

Da
t
a
2/
1
8
/
2
0
1
5
Table 1 Hart & Hickman, PC
TITLE
PROJECT
SITE LOCATION MAP
NORFOLK SOUTHERN INTERMODAL FACILITY
CHARLOTTE, NORTH CAROLINA
DATE:
JOB NO:
REVISION NO:
FIGURE NO:
02/19/2015 0
1CAT-003
0 2000 4000N
APPROXIMATE
SCALE IN FEET
U.S.G.S. QUADRANGLE MAP
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
Charlotte East, 2013
SITE