2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
Central
Brisbane
is
located
more
than
4,000
feet
from
areas
likely
to
be
developed
with
structures
requiring
pile
driving
within
the
Project
Site
development
area.
The
following
analysis
is
a
demonstration
of
why
more
distant
sites
were
not
included.
As
stated
on
page
4.J-33
of
the
Draft
EIR,
pile-driving
noise
of
103
dBA
at
the
southern
end
of
the
Baylands
Project
site
would
be
attenuated
to
73
dBA
at
the
nearest
receptor
1,600
feet
away.
At
a
distance
of
4,000
feet,
the
noise
would
be
further
attenuated
to
65
dBA.
The
Caltrain
bridge
project
was
located
substantially
closer
to
Central
Brisbane,
and
noise
impacts
on
Central
Brisbane
from
that
project
would
be
expected
to
be
much
greater
than
those
of
Project
Site
development.
The
comment
fails
to
demonstrate
the
suggested
revision
to
Mitigation
Measure
4.J-4a
to
restrict
pile
driving
to
four
rather
than
five
days
of
the
week
is
any
more
effective
in
mitigating
potential
noise
impacts
that
the
measure
as
currently
proposed.
Limiting
pile
driving
activities
to
four
rather
than
five
days
per
week
would
extend
the
overall
duration
of
pile
driving
activity.
The
City
Council
can
consider
the
trade-off
between
fewer
days
of
pile
driving
per
week
and
extending
the
time
pile
driving
might
occur
as
part
of
its
decision
making
for
the
Baylands.
Section
4.J,
Noise
and
Vibration
,
of
the
Draft
EIR
makes
no
assertion
that
Brisbane
is
located
out
of
the
“fly-zone,”
but
does
note
that
the
Baylands
and
City
of
Brisbane
are
outside
of
the
65
dB
CNEL
of
airport
operations.
Section
4.J
provides
information
related
to
aircraft
operations
activity
at
San
Francisco
International
Airport
(SFO)
in
two
locations.
First,
as
stated
on
pages
4.J-5
and
4.J-36,
the
2012
Noise
Exposure
Map
for
SFO
shows
that
all
portions
of
the
City
of
Brisbane
are
outside
the
Community
Noise
Equivalent
Level
(CNEL)
65
decibel
(dB)
noise
contour
associated
with
aircraft
operations
at
SFO.
This
fact
is
also
documented
in
the
Comprehensive
Airport
Land
Use
Compatibility
Plan
for
the
Environs
of
San
Francisco
International
Airport
adopted
in
October
of
2012,
which
includes
CNEL
noise
contour
exhibits
for
2020.
Secondly,
on
page
4.J-36,
the
Draft
EIR
states
that,
as
noted
in
Section
4.I,
Land
Use
and
Planning
,
the
Baylands
Project
Site
is
located
within
Airport
Influence
Area
A.
Airport
Influence
Area
A
is
defined
as
an
area
that
is
overflown
by
SFO-related
aircraft
at
an
altitude
of
10,000
feet
or
less
above
mean
sea
level
at
least
once
a
week.
The
data
source
and
content
referred
to
in
Comment
are
not
defined.
The
Margaret
Road
water
tank
is
located
over
4,000
feet
from
the
Baylands
site
and
noise
impacts
from
construction
and
roadway
traffic
under
Project
Site
development
would
be
expected
to
be
substantially
less
at
this
location
than
identified
than
for
the
closest
sensitive
receptors
examined
in
the
Draft
EIR.
Brisbane
Baylands
Final
EIR
2.9.3-99
May
2015