2.
Response
to
Comment
2.4
Master
Responses
to
Comments
The
currently
proposed
remedial
activities
at
include:
(1)
(2)
(3)
Excavation
of
approximately
16,000
CY
of
TPH-contaminated
soil
and
1,000
CY
of
VOC
contaminated
soil
for
offsite
disposal,
Excavation
of
approximately
37,000
CY
of
TPH-contaminated
soil
for
onsite
treatment
and
reuse,
and
Excavation
of
12,000
CY
of
TPH-contaminated-soil
for
onsite
reuse.
Excavation
of
soil
impacted
with
either
TPH
or
VOCs
is
intended
to
capture
other
constituents,
including
lead.
Potential
remedial
technologies
for
and
are
shown
in
Draft
EIR
Table
below.
The
remedies
identified
in
the
Draft
EIR
represent
a
range
of
potential
technologies
for
remediation.
The
final
remedy
selection
process
will
be
conducted
under
the
jurisdiction
of
DTSC
for
and
RWQCB
for
as
part
of
preparation
of
Remedial
Action
Plans
that
will
undergo
public
review
and
subsequent
CEQA
analysis
prior
to
approval.
DRAFT
EIR
TABLE
POTENTIAL
REMEDIAL
TECHNOLOGIES
FOR
OPERABLE
UNIT
1
AND
OPERABLE
UNIT
2
Remedial
Technologies
Targeted
Excavation
with
Offsite
Disposal
X
X
X
X
X
X
X
X
X
X
X
X
Targeted
Excavation
with
Onsite
Treatment
X
Targeted
Excavation
with
Onsite
Relocation
X
X
X
Targeted
Soil-Vapor
Extraction
X
Monitored
Natural
Attenuation
Contaminants
VOCs
in
soil
Metals
in
soil
Residual
Bunker
C
in
soil
Free
Product
Bunker
C
in
soil
VOCs
in
groundwater
TPH
in
groundwater
Capping
X
X
X
Vapor
Systems
X
In
Situ
Bio-
remediation
X
VOCs
=
volatile
organic
compounds
TPH
=
total
petroleum
hydrocarbons
SOURCE:
Geosyntec
Consultants,
2012.
Title
27
Review
Process
Based
on
a
review
of
waste
characterization
studies
and
other
studies
completed
to
date,
the
RWQCB
and
San
Mateo
County
Health
System
will
determine
whether
any
additional
specific
waste
characterization
or
other
investigations
are
required.
Following
the
completion
of
studies
to
the
satisfaction
of
the
RWQCB
and
San
Mateo
County
Health
System,
proposed
plans
for
closure
Brisbane
Baylands
Final
EIR
2.4-39
May
2015