2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
Soil
boring
logs
from
various
consultants
taken
at
various
times
have
identified
the
depth
of
soil
cover
placed
on
top
of
the
landfill
waste
to
prevent
direct
contact
of
refuse
with
humans
as
being
an
20
feet
to
30
feet
thick.
Specific
locations
for
the
thickness
of
the
interim
cover
have
not
been
reported.
As
part
of
Title
27
landfill
closure,
placement
of
a
low
permeability
engineered
landfill
cap
compliant
with
Title
27
that
will
prevent
human
contact
with
refuse
within
the
former
landfill
will
be
required.
See
Response
See
for
discussion
of
the
remediation
review
and
approval
process.
Human
health
risk
assessments
will
be
undertaken
based
on
the
land
uses
approved
by
the
City
of
Brisbane
for
the
Baylands.
Risk-based
cleanup
goals
will
then
be
determined
by
the
RWQCB
and
DTSC
based
on
those
land
uses.
Physical
development
within
the
Baylands
Project
site
is
predicated
on
remediation
to
human
health
standards
under
the
oversight
of
State
and
local
regulatory
agencies.
As
such,
all
constituents
of
concern
will
be
addressed
as
part
of
the
remediation
process.
The
RWQCB
will
determine
appropriate
monitoring
protocols
as
part
of
Title
27
landfill
closure.
As
part
of
and
remediation,
appropriate
monitoring
protocols
will
be
established
by
the
DTSC
and
RWQCB,
respectively.
A
“well
-
defined”
aquifer
is
defined
as
an
aquifer
between
two
distinct
layers
of
earth
that
“confine”
the
aquifer
of
interest.
Such
an
aquifer
would
be
readily
visible
in
a
cross
section
obtained
from
multiple
boring
logs.
The
Draft
EIR
statement
there
are
no
“well
-
defined”
aquifers
underlying
the
Project
site
indicates
the
lack
of
confining
layers
separating
distinct
water-bearing
units,
and
does
not
imply
there
is
no
aquifer
present.
The
lack
of
confining
layers
defining
the
aquifer
is
to
be
expected,
since
the
bulk
of
the
site
is
comprised
of
fill
consisting
of
earthquake
rubble,
landfill
debris,
and
soil.
The
purpose
of
Draft
EIR
Table
4.G-1
is
to
identify
groundwater
elevations
in
the
2010
baseline
year,
measured
relative
to
mean
sea
level,
and
not
to
identify
the
fluctuations
in
groundwater
elevations
that
may
occur
over
time
between
wet
and
dry
years.
In
addition,
Table
4.G-1
is
not
intended
to
demonstrate
tidal
action
or
the
lack
thereof.
Tidal
influence
on
groundwater
has
been
documented
along
the
margin
of
the
landfill,
has
not
been
documented
as
being
significant
across
the
site.
Seasonal
influence
of
surface
water
runoff
has
been
documented
in
the
tree-lined
channel
in
the
northern
portion
of
the
site;
however,
a
significant
connection
between
the
water
in
the
tree
lined
channel
and
groundwater
underlying
the
site
Brisbane
Baylands
Final
EIR
2.9.1-42
May
2015