2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
Residential
development
within
the
Baylands
is
proposed
in
the
DSP
and
DSP-V
scenarios,
but
not
in
the
CPP
or
CPP-V
scenarios.
In
the
DSP
and
DSP-V
scenarios,
residential
dwelling
units
are
currently
proposed
by
the
applicant
for
those
scenarios
to
be
placed
on
podiums
or
over
street
level
commercial
use
in
order
to
reduce
potential
for
human
contact
with
the
ground
surface.
However,
development
proposed
in
that
manner
could
result
in
the
use
of
commercial-,
rather
than
residential-level,
remediation
objectives.
While
the
RWQCB
and
DTSC
have
the
regulatory
authority
to
impose
remediation
objectives
13
,
the
City
has
the
regulatory
authority
to
approve
or
not
approve
residential
use
within
the
Baylands,
as
well
as
the
authority
to
approve
the
design
of
any
proposed
residential
use
in
the
Baylands.
Title
27
closure
of
the
portion
of
the
landfill
will
require
methane
collection
and
extraction
systems,
along
with
ongoing
monitoring
within
the
Baylands.
Specifically,
Mitigation
Measure
4.G-2h
sets
the
following
requirements:
Mitigation
Measure
4.G-2h:
Construction
of
all
new
structures
within
the
former
landfill
footprint
and
within
and
as
well
as
on
site
areas
within
1,000
feet
of
the
waste
material
footprint
shall
incorporate
sub-slab
vapor
barriers
to
minimize
potential
vapor
intrusion
into
buildings.
Further,
all
structures
built
on
within
1,000
feet
of
the
landfill
footprint
shall
be
equipped
with
automatic
combustible
gas
sensors
in
sub-floor
areas
and
in
the
first
floor
of
occupied
interior
spaces
of
buildings.
A
centralized
sensor
monitoring
and
recording
system
shall
also
be
provided.
Gas
monitoring
for
trace
gases
shall
be
conducted
in
accordance
with
the
requirements
of
Title
27,
for
30
years
or
until
the
operator
receives
authorization
from
the
local
enforcement
agency
(LEA)
and
CalRecycle
to
discontinue
monitoring
upon
demonstration
by
the
operator
that
there
is
no
potential
for
trace
gas
migration
into
onsite
structures.
See
for
discussion
of
the
adequacy
of
the
studies
undertaken
to
date
for
use
in
the
Draft
EIR.
See
13
for
discussion
of
the
remediation
review
and
approval
process
for
the
Baylands
and
for
discussion
of
the
adequacy
of
the
existing
studies
for
use
in
the
Draft
EIR.
The
studies
completed
to
date
will
be
used,
along
with
any
additional
investigations
required
by
the
RWQCB
or
DTSC,
to
conduct
human
health
risk
assessments
to
determine
risk-based
remediation
goals
for
the
land
uses
identified
by
the
City
of
Brisbane
to
be
appropriate
within
the
Baylands.
The
13
Typically,
two
levels
of
remediation
are
considered:
residential
and
commercial/industrial
human
health
risk
assessments,
although
such
assessments
may
also
address
a
number
of
scenarios
involving
construction
and
other
onsite
workers,
as
well
as
other
special
circumstances.
See
5
for
discussion
of
the
regulatory
authority
for
site
remediation.
Brisbane
Baylands
Final
EIR
2.9.1-67
May
2015