2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
See
for
discussion
of
the
adequacy
of
existing
studies
for
use
in
the
Draft
EIR.
The
issue
of
concern
in
this
comment
is
whether
groundwater
is
affecting
the
generation
of
leachate.
Tidal
influence
of
groundwater
is
documented
along
the
margin
of
the
former
landfill,
but
not
across
the
Project
site.
In
addition,
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.
Kleinfelder
(1987,
1990)
concluded
the
shallow
groundwater
was
not
influenced
by
tidal
action,
and
deeper
groundwater
at
the
location
of
the
well
tested
appeared
to
have
some
discharge
to
the
Bay.
Therefore
the
conclusion
is
reached
that
tidal
influence
on
leachate
recharge
is
less
than
significant
because
the
solid
waste
received
by
the
landfill
was
placed
on
top
of
the
earthquake
rubble
that
was
placed
on
top
of
the
marine
sediments.
Because
the
former
landfill
ceased
operations
in
1967,
interactions
between
groundwater
and
leachate
would
have
been
apparent
at
the
time
of
these
studies.
Final
cover
systems
must
be
carried
out
in
conformance
with
a
construction
quality
assurance
plan
certified
by
an
appropriately
registered
professional
to
satisfy
the
requirements
of
Title
27,
Section
20324.
The
construction
quality
assurance
program,
including
all
relevant
aspects
of
construction
quality
control,
is
required
to
provide
evidence
that
materials
and
procedures
utilized
in
the
placement
of
any
containment
feature
at
a
waste
management
unit
will
be
tested
and
monitored
to
assure
the
structure
is
constructed
in
accordance
with
the
design
specifications
approved
by
the
RWQCB.
Specific
monitoring
requirements
will
be
established
by
the
RWQCB
as
part
of
Title
27
landfill
closure.
The
design
professional
that
prepares
the
construction
quality
assurance
plan
is
required
to
be
a
registered
civil
engineer
or
certified
engineering
geologist.
The
construction
quality
assurance
program
is
to
be
supervised
by
a
registered
civil
engineer
or
certified
engineering
geologist
who
is
required
to
be
designated
as
the
construction
quality
assurance
officer.
The
comment
inaccurately
characterizes
information
contained
in
the
Draft
EIR.
The
section
of
the
Draft
EIR
referenced
in
this
comment
is
specific
to
leachate
movement
into
the
groundwater
underlying
the
landfill,
while
this
comment
addresses
bedrock
at
Icehouse
Hill.
The
information
on
page
4.G-17
referenced
in
the
Draft
EIR
accurately
summarizes
the
results
of
surface
water
and
leachate
monitoring
undertaken
at
the
former
landfill.
Brisbane
Baylands
Final
EIR
2.9.1-34
May
2015