2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
construction,
drainage
control
(both
surface
and
subsurface),
and
avoidance
of
settlement,
liquefaction,
differential
settlement,
spread
of
leachate
outside
of
the
former
landfill,
and
seismic
hazards
in
accordance
with
current
California
Building
Code
requirements
including
Chapter
16,
Section
1613.
The
report
shall
also
require
that
all
subsurface
improvements
such
as
utilities
that
include
any
materials
susceptible
to
corrosive
effects
would
be
engineered
in
conformance
with
the
most
recently
adopted
California
Building
Code
requirements
including
the
use
of
engineered
backfill.
The
report
shall
also
include
stability
analyses
of
final
design
cut
and
fill
slopes,
including
recommendations
for
avoidance
of
slope
failure(s).
The
final
grading
plan
and
associated
development
elements
including
the
landfill
cap
layer
shall
be
designed
and
constructed
in
accordance
with
requirements
of
the
final
design-level
geotechnical
investigation
as
approved
by
the
City
Engineer
prior
to
the
issuance
of
any
building
permits.
Designers
and
contractors
shall
comply
with
recommendations
of
the
design-level
geotechnical
investigation
during
pProject
construction
including
any
modifications
required
by
the
City
Engineer.
A
licensed
geotechnical
or
soil
engineer
shall
monitor
earthwork
and
construction
activities
to
ensure
that
recommended
site-specific
construction
methods
are
followed
during
Project
construction.
These
recommendations
shall
be
incorporated
into
all
development
plans
submitted
and
approved
for
the
Project
Site
development
as
conditions
of
approval.
As
discussed
regulatory
authority
for
remediation
and
Title
27
landfill
closure
rests
with
the
RWQCB
and
DTSC,
including
responsibility
for
post-landfill
closure
and
post-
remediation
monitoring.
Specific
monitoring
requirements
will
be
established
by
the
RWQCB
and
DTSC
as
part
of
Title
27
landfill
closure
and
remediation
plans
based
on
the
activities
being
undertaken
at
various
development
stages
and
the
risk
of
toxic
releases.
Costs
for
such
monitoring
and
insurance
will
be
borne
by
the
developer.
See
for
discussion
of
liability
for
site
remediation.
Because
groundwater
is
not
being
pumped
for
municipal
water
supplies,
the
current
drought
is
not
affecting
groundwater
levels
or
groundwater
movement.
It
will,
therefore,
have
minimal
if
any
effect
on
the
groundwater
contamination
defined
onsite
and
offsite.
The
land
that
is
now
the
Baylands
Project
Site
was
created
by
Bay
infilling,
i.e.,
the
placement
of
solid
materials
and
construction
rubble
onto
tidal
flats
and
waters.
The
shallow
groundwater
gradient
has
been
identified
as
easterly
towards
San
Francisco
Bay
and
southerly
towards
Brisbane
Lagoon;
however
the
shallow
groundwater
is
not
in
communication
with
the
San
Francisco
Bay,
and
would
therefore
be
unaffected
by
rising
Bay
levels
over
time.
Brisbane
Baylands
Final
EIR
2.9.1-27
May
2015