2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
See
The
mitigation
measures
referred
to
in
this
comment
address
landfill
gas
migration,
and
not
the
leachate
issues
raised
in
the
comment.
See
for
discussion
of
the
remediation
review
and
approval
process.
As
discussed
in
that
Master
Response,
Title
27
closure
under
the
regulatory
authority
of
the
RWQCB
will
be
required
to
prevent
any
spread
or
increases
in
leachate
that
exceed
any
regulatory
thresholds.
The
Draft
EIR
text
correctly
describes
the
connection
between
the
Beatty
Avenue
Storm
Drain
and
the
Sunnydale
line,
which
heads
north
to
connect
with
the
San
Francisco
wastewater
treatment
plant.
Figure
4.H-1
is
edited
to
show
the
connection
of
the
Beatty
Avenue
Storm
Drain
line
connection.
The
sampling
mentioned
on
Draft
EIR
page
4.H-5
pertains
to
required
monitoring
that
has
been
conducted
on
the
Baylands
Project
site
in
accordance
with
the
referenced
Industrial
NPDES
General
Permit.
The
sampling
is
targeted
towards
current
industrial
activities
on
the
site
and
is
not
intended
to
measure
all
the
historical
contamination
(also
called
legacy
pollution)
associated
with
the
Baylands
Project
site.
As
explained
in
Section
4.G,
Hazards
and
Hazardous
Materials
,
the
legacy
pollutants
are
found
in
the
groundwater
and
soils
and
are
in
varying
stages
of
investigation
and
cleanup
under
the
regulatory
oversight
of
either
the
RWQCB
or
the
DTSC.
However,
remediation
would
be
either
completed
or
at
a
stage
that
is
conducive
for
development
(with
full
knowledge
that
the
use
of
infiltration
LID
strategies
are
included
as
part
of
the
design)
prior
to
construction
of
proposed
improvements
(as
described
in
Draft
EIR
Mitigation
Measure
4.G-2a:
“Prior
to
approval
of
a
specific
plan
for
any
parcel
within
the
Project
Site,
the
project
applicant
shall
provide
confirmation
to
the
City
that
the
Department
of
Toxic
Substances
Control
(DTSC),
Regional
Water
Quality
Control
Board
(RWQCB),
and/or
the
San
Mateo
County
Environmental
Health
Division
as
the
Local
Enforcement
Agency,
as
applicable,
have
reviewed
and
are
prepared
to
approve
a
Remedial
Action
Plan
or
final
closure
and
post-closure
maintenance
plans
upon
certification
of
appropriate
environmental
documentation
for
that
action.”)
As
explained
in
the
Draft
EIR
in
Section
4.G,
Hazards
and
Hazardous
Materials
,
legacy
contaminants
associated
with
past
uses
at
the
Baylands
Project
site
have
been
the
subject
of
investigation
and
cleanup
for
many
years.
As
a
result,
there
are
numerous
existing
groundwater
monitoring
wells
throughout
the
site
that
have
been
used
to
characterize
the
extent
of
the
contamination.
There
is
no
known
pending
legislation
to
increase
the
water
quality
monitoring.
All
current
monitoring
activities
and
reporting
are
subject
to
the
oversight
of
the
regulatory
agencies
(RWQCB
or
DTSC).
Brisbane
Baylands
Final
EIR
2.9.3-79
May
2015