2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
While
the
existing
CNEL
is
70
dBA
at
monitoring
location
7,
Project
Site
development
would
result
in
a
0.8
dBA
increase
in
noise
in
the
DSP
and
DSP-V
scenarios
(0.5
dBA
in
the
CPP
and
CPP-V
scenarios)
Such
differences
in
noise
levels
would
not
be
detectable
by
the
human
ear
and
operational
traffic
increases
resulting
from
the
proposed
project
were
identified
as
being
less
than
significant
at
this
location.
Page
4.J-12
and
Table
4.J-2
of
the
Draft
EIR
present
the
City
of
Brisbane
Noise
Ordinance
(Chapter
8.28)
restrictions,
and
is
not
intended
to
provide
a
comparison
of
anticipated
noise
levels
from
different
types
of
construction
equipment.
Table
4.J-7
illustrates
differences
in
noise
levels
of
various
types
of
construction
activities.
All
construction
activities
will
be
required
to
meet
the
City’s
noise
standards
set
forth
in
Chapter
8.28
of
the
Municipal
Code.
All
construction
activities
will
be
required
to
meet
the
City’s
noise
standards
set
forth
in
Chapter
8.28
of
the
Municipal
Code.
The
noise
standards
set
forth
in
the
City’s
Noise
Ordinance
based
on
generation
of
noise
levels
above
ambient
are
typical
of
noise
standards
throughout
the
state.
Brisbane’s
ordinance
is
designed
to
address
generation
of
noise
from
specific
noise
sources,
recognizing
that
noise
levels
equal
to
or
less
than
ambient
are
not
heard
above
ambient
noise.
Programs
for
reduction
of
ambient
noise
levels
are
addressed
as
communitywide
policy,
rather
than
as
mitigation
measures
attached
to
a
specific
project,
since
under
CEQA,
proposed
projects
can
be
required
to
mitigate
the
impact
they
may
create,
but
not
to
mitigate
the
impact
of
existing
conditions.
The
CEQA
Appendix
G
significance
criteria
that
apply
to
noise
and
groundborne
vibration
are
presented
on
page
4.J-17
of
the
Draft
EIR
and
are
sequentially
addressed
in
the
impact
statements
of
the
Noise
Impact
section.
Mitigation
Measure
4.J-4a
on
Draft
EIR
page
4.J-34
would
implement
a
construction
Noise
Control
Plan
to
address
identified
significant
noise
impacts
related
to
construction.
Human
annoyance
impacts
from
construction-related
vibration
are
assessed
on
pages
4.J-23
and
4.J-24
of
the
Draft
EIR
and
were
determined
to
be
a
less-than-significant
impact.
The
Draft
EIR
text
referred
to
in
Comment
describes
the
methodology
used
to
analyze
vibration
impacts.
Analysis
of
anticipated
vibration
impacts
that
would
result
from
Baylands
development
is
presented
starting
on
Draft
EIR
page
4.J-22.
Mitigation
Measure
4.J-2b
on
Draft
EIR
page
4.J-25
requires
any
development
within
85
feet
of
the
Roundhouse
that
would
require
pile
driving
or
other
construction
Brisbane
Baylands
Final
EIR
2.9.2-114
May
2015