2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
See
A
master
drainage
plan
for
the
Baylands
Project
site
must
be
included
as
part
of
the
required
specific
plan
for
the
Baylands.
The
specific
timing
for
implementation
of
drainage
improvements
will
be
determined
by
the
required
development
phasing
plan
to
ensure
that
adequate
conveyance
capacity
is
available
throughout
the
phased
development
of
the
Baylands.
Drainage
improvements
are
to
be
provided
concurrent
with
site-
specific
development
and
completed
prior
to
issuance
of
a
certificate
of
occupancy.
See
Chapter
4.0,
Mitigation
Monitoring
and
Reporting
Program
for
specific
requirements.
The
text
cited
in
this
comment
describes
applicable
NPDES
MS4
requirements
adopted
pursuant
to
the
federal
Clean
Water
Act.
All
development
within
the
Baylands
is
subject
to
the
applicable
EIR
mitigation
measures.
Detention
basins
are
commonly
used
in
California.
Their
primary
benefit
is
to
reduce
peak
flood
flows
to
protect
downstream
lands
from
the
effects
of
increased
runoff
from
development
sites.
Given
existing
contamination
issues
within
the
Baylands
and
lack
of
downstream
properties
requiring
flood
protection,
use
of
detention
basins
have
not
been
identified
as
required
mitigation
measures.
See
Mitigation
Measure
4.H-5
provides
for
alternatives
to
use
of
poisons
in
pest
management.
The
effectiveness
of
such
programs
is
dependent
on
the
extent
of
infestation,
the
design
of
the
pest
management
plan,
and
implementation
efforts.
Properly
designed
and
managed
integrated
pest
management
programs
can
be
as
effective
as
use
of
poisons.
As
stated
in
Draft
EIR
Mitigation
Measure
4.H-4a,
all
proposed
development
is
to
be
designed
with
“drainage
improvements
[that]
shall
accommodate
the
100-year
peak
storm
event
within
the
piping
system
and
streets
such
that
building
finished
floor
elevations
provide
a
minimum
of
1-foot
of
freeboard
above
the
100-year
storm
event
hydraulic
grade
line
water
elevation
with
tidal
flow
and
100
years
of
estimated
sea
level
rise.”
As
such,
proposed
development
would
be
designed
to
take
into
consideration
sea
level
rise
by
ensuring
that
finished
floor
elevations
are
a
minimum
of
1
foot
above
the
projected
sea
level
100
years
into
the
future.
As
noted
on
page
4.H-7
of
the
Draft
EIR,
the
magnitude
of
projected
sea
level
rise
is
difficult
to
predict
and
varies
substantially
among
the
thousands
of
scientific
research
documents
available
on
climate
change
and
sea
level
rise.
Brisbane
Baylands
Final
EIR
2.9.3-88
May
2015