2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
hazardous
materials
site
pursuant
to
Government
Code
Section
65962.5
under
any
of
the
scenarios
would
be
reduced
to
a
less-than-significant
level.
The
applicable
significance
threshold
for
Impact
4.G-5,
which
is
taken
directly
from
State
CEQA
Guidelines
Appendix
G,
refers
to
areas
within
2
miles
of
a
public
use
airport.
The
Brisbane
Baylands
Project
site
is
located
more
than
two
miles
from
the
San
Francisco
International
Airport.
The
Sierra
Point
area
is
located
south
of
the
Baylands,
and
because
it
is
closer
to
the
Airport,
would
have
greater
sensitivity
in
terms
of
building
heights.
The
proposed
height
of
all
buildings
within
the
Baylands
will
be
required
to
comply
with
applicable
FAA
requirements
and
will
be
prohibited
from
encroaching
into
any
of
the
imaginary
surfaces
extending
outward
from
San
Francisco
International
Airport.
All
proposed
roadway
crossings
of
the
Caltrain
rail
line
under
each
scenario
will
be
grade-separated
over-crossings.
All
grade-separated
crossings
needed
for
emergency
access
would
be
designed
so
as
to
remain
functional
following
an
earthquake.
Caltrain
policy
is
to
prohibit
new
at-grade
crossings.
Neither
would
an
at-grade
rail
crossing
of
the
Caltrain
tracks
be
likely
to
be
approved
by
the
California
Public
Utilities
Commission
due
to
safety
hazards
inherent
in
at-grade
crossings.
Caltrain
has
established
general
policy
in
regard
to
vehicular
grade
crossings,
and
pedestrians-only
grade
crossings.
As
a
general
policy,
Caltrain
would
consider
new
at-grade
crossing(s)
only
in
conjunction
with
closure
of
adjacent
at-grade
crossing(s).
Prior
to
initiating
physical
development
within
the
Project
Site,
remediation
of
and
as
well
as
Title
27
closure
of
the
former
Brisbane
Landfill,
must
occur.
Thus,
water
quality
monitoring
during
site
development
of
the
Baylands
will
be
occurring
after
site
remediation
and
landfill
closure
have
been
undertaken.
Human
health
risk
assessments
will
be
required
by
the
RWQCB
and
DTSC
to
estimate
the
potential
site-specific
risks
due
to
exposure
to
the
constituents
in
the
soil,
soil
vapor
and
groundwater
to
human
health
and
the
environment,
based
on
the
land
uses
determined
by
the
City
to
be
appropriate
for
the
Baylands.
The
risk
assessment
will
also
be
used
by
the
regulatory
agencies
to
provide
risk-based
cleanup
goals.
The
Municipal
Storm
Water
Permitting
Program
regulates
storm
water
discharges
from
municipal
separate
storm
sewer
systems
(MS4s).
Storm
water
is
runoff
from
rain
that
runs
off
surfaces
such
as
rooftops,
paved
streets,
highways
Brisbane
Baylands
Final
EIR
2.9.1-88
May
2015