2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
A
groundwater
treatment
system
has
been
in
place
within
the
northwestern
portion
of
the
former
Southern
Pacific
Railroad
railyard
property
since
1995.
Groundwater
is
being
monitored
at
the
southwestern
portion
of
the
former
Southern
Pacific
Railroad
railyard
property
The
railyard,
in
addition
to
the
fill
area,
was
sampled
in
1987
by
Kleinfelder.
The
portion
of
the
site
therefore
where
SVOCs
were
detected
by
Kleinfelder
in
1987
has
been
undergoing
remediation
under
the
oversight
of
DTSC
and
the
RWQCB
Most
of
the
groundwater
cleanup
and
remedial
activities
have
focused
on
VOCs,
metals,
and
Bunker
C
fuel
oil.
Metal
contamination
in
media
onsite
has
been
characterized,
investigated,
remediated,
is
undergoing
remediation
and
is
well
understood.
See
PCBs
have,
in
fact,
been
located
within
both
and
as
reported
by
Geosyntec
and
illustrated
in
Draft
EIR
Figure
4.G-6g.
The
detected
concentrations
of
PCBs
are
also
illustrated
on
Figure
10
of
the
Hazardous
Materials
Summary
Report
–
Operable
Units
1
and
2,
Former
Southern
Pacific
Railyard,
Brisbane,
San
Mateo
County,
California
(GeoSyntec,
March
1,
2012).
PCBs
were
detected
in
the
oil
tank
and
turntable
areas,
the
most
likely
sources.
See
for
discussion
of
the
remediation
review
and
approval
process.
As
discussed
in
that
Master
Response,
based
on
existing
evidence
regarding
the
potential
for
presence
of
PCBs,
the
RWQCB
and
DTSC
have
not,
to
date,
deemed
additional
studies
for
PCBs
to
be
necessary.
Please
see
for
discussion
regarding
the
adequacy
of
existing
studies
for
use
in
the
Draft
EIR.
See
also
for
discussion
of
the
remediation
review
and
approval
process.
Pursuant
to
its
regulatory
authority,
the
RWQCB
will
determine
the
specific
activities
and
technologies
to
be
implemented
for
Title
27
closure
of
the
former
landfill.
Please
see
for
discussion
regarding
the
adequacy
of
existing
studies
for
use
in
the
Draft
EIR.
Pursuant
to
the
requirements
of
Regulation
8,
Rule
34,
USEPA
40CFR
Part
60
725(b)(2)(i)
and
40CFR
Part
62.14356
(a)(1)
a
gas
collection
system
was
installed
in
1991
on
the
landfill
(Draft
EIR
Appendix
B).
The
existing
landfill
gas
control
system
has
been
operational
since
2002
and
will
be
required
to
continue
to
operate
in
accordance
with
Title
27
regulations.
The
flare
station
operates
a
single
flare
7
hours/day
(to
comply
with
emission
control
limits)
with
a
destruction
efficiency
of
98
percent
and
a
temperature
of
1400
degrees
Fahrenheit
(Draft
EIR
Appendix
B).
Test
results
from
2001
indicate
generation
of
methane
gas
decreased
from
140
SCFM
in
1992
to
approximately
40
SCFM
in
2001
and
VOCs,
as
measured
with
an
OVA,
were
ND
(Draft
EIR
Appendix
B).
Brisbane
Baylands
Final
EIR
2.9.2-83
May
2015