2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
drinking
water
is
provided
for
context,
but
it
should
be
noted
that
groundwater
is
not
used
for
domestic
water
supply
in
Brisbane,
and
thus
cleanup
levels
ultimately
approved
by
the
Regional
Water
Quality
Control
Board
may
not
reflect
drinking
water
standards.
Although
no
current
groundwater
use
has
been
identified
and
no
plans
for
future
groundwater
use
have
been
proposed,
in
its
review
of
groundwater
contamination
related
to
the
Kinder
Morgan
tank
farm
site,
the
RWQCB
determined
that
the
potential
for
future
groundwater
use
in
the
vicinity,
including
for
drinking
water
from
deeper
water-bearing
zones,
should
not
be
precluded.
Therefore,
applicable
water
quality
objectives
for
tank
farm
groundwater
remediation
included
drinking
water
standards,
which
are
the
more
stringent
of
United
States
Environmental
Protection
Agency
and
State
of
California
primary
maximum
contaminant
levels.
Cleanup
to
this
level
will
protect
all
existing
and
potential
future
beneficial
uses
of
groundwater
(RWQCB,
2008).
See
for
discussion
of
the
remediation
review
and
approval
process.
As
part
of
its
requirements
for
Title
27
landfill
closure,
the
RWQCB
will
review
the
adequacy
of
the
existing
leachate
collection
and
control
system
to
prevent
leachate
from
spreading
and
exceeding
regulatory
standards.
Based
on
that
determination,
the
RWQCB
will
set
specific
requirements
for
any
needed
upgrades,
expansions,
or
replacement
of
the
existing
leachate
system.
No
factual
evidence
is
provided
in
the
comment
to
support
the
comment
assertion
that
it
is
“likely”
that
subsurface
seeps
into
the
Lagoon
exist.
The
leachate
seep
collection
and
transmission
system
installed
by
the
landowner
as
part
of
a
leachate
management
system
as
required
by
the
RWQCB
is
located
at
the
southern
end
of
the
Brisbane
Landfill,
intercepts
leachate
from
seeps
and
conveys
the
leachate
to
the
Bayshore
Sanitary
District
sewer.
The
system
was
reported
effective
as
no
leachate
seeps
were
observed
during
the
2010
summer
monitoring
event.
The
conclusion
was
reached
then,
that
if
no
leachate
seeps
were
visible,
no
exposure
to
human
or
environmental
receptors
was
occurring.
The
third
paragraph
on
page
4.G-31
has
been
revised
to
read
as
follows:
A
leachate
seep
collection
and
transmission
system
(LSCTS)
was
installed
by
the
landowner
as
part
of
a
leachate
management
system
to
meet
the
interim
objective
required
by
the
Regional
Water
Quality
Control
Board.
The
system
is
located
at
the
southern
end
of
the
Brisbane
Landfill,
intercepting
leachate
and
conveying
it
to
the
Bayshore
Sanitary
District
sewer
line.
Results
from
the
summer
2010
monitoring
event
indicated
that
no
leachate
seeps
were
observed;
therefore,
it
was
determined
that
the
leachate
seep
collection
and
transmission
system
is
Brisbane
Baylands
Final
EIR
2.9.1-45
May
2015