2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
regarding
the
Title
27
landfill
closure
review
and
approval
process.
The
RWQCB
approved
any
specific
technologies
for
Title
27
closure
of
the
former
landfill.
See
also
for
discussion
of
cross-contamination.
See
for
discussion
regarding
the
remediation
review
and
approval
process.
Human
health
risk
assessments,
risk-based
cleanup
goals,
and
the
technologies
to
be
employed
in
site
remediation
and
Title
27
landfill
closure,
will
be
developed
and
approved
by
the
RWQCB
and
DTSC.
These
risk-based
cleanup
goals
and
remedial
technologies
will
account
for
the
development
of
uses
determined
by
the
City
to
be
appropriate
within
the
Baylands,
and
will
address
grading
activities
and
related
soils
compaction.
As
discussed
both
the
RWQCB
and
DTSC
are
obligated
as
part
of
their
remediation
review
and
approval
authority
to
prevent
the
spread
of
hazardous
materials
within
or
from
the
Baylands
in
concentrations
in
excess
of
approved
risk-based
cleanup
goals.
Thus,
compaction
of
soils
on
top
of
the
landfill
would
not
result
in
materials
within
the
landfill
moving
offsite.
See
for
discussion
of
the
remediation
review
and
approval
process.
As
discussed
in
that
Master
Response,
the
use
of
any
specific
remediation
method
or
technology
has
not
been
approved
by
either
the
RWQCB
or
DTSC.
Such
approvals
will
not
occur
until
after
the
City
of
Brisbane
determines
what
land
uses
are
appropriate
within
the
Baylands,
updated
human
health
risk
assessments
are
completed
based
on
those
land
uses,
and
risk-based
cleanup
goals
are
established
by
the
RWQCB
and
DTSC.
The
Draft
EIR
text
referenced
in
this
comment
notes
that
estimates
of
21-26
feet
of
settlement
within
the
former
landfill
determined
by
Geosyntec
(2008)
assumed
use
of
wick
drains
to
facilitate
primary
settlement
in
Young
and
Old
Bay
Mud
and
secondary
settlement
of
municipal
waste
after
use
of
deep
dynamic
compaction.
Thus,
wick
drains
are
not
specifically
proposed,
nor
has
the
RWQCB
approved
any
specific
technologies
for
Title
27
closure
of
the
former
landfill.
The
recycled
water
plant
would
receive
a
site-specific
geotechnical
evaluation
just
as
would
any
other
site-
specific
project
associated
with
the
Baylands
development.
As
such,
any
recommended
site
preparations
and
foundation
design
recommendations
would
be
made
in
accordance
with
current
building
code
requirements
such
that
the
recycled
water
plant
could
avoid
any
substantive
damage
from
any
identified
geotechnical
hazards.
See
for
discussion
of
the
remediation
review
and
approval
process
and
5
for
discussion
regarding
compliance
with
the
law
as
mitigation
under
CEQA.
The
RWQCB
and
DTSC,
as
the
responsible
regulatory
authorities
for
site
Brisbane
Baylands
Final
EIR
2.9.3-59
May
2015