2.
Response
to
Comment
2.4
Master
Responses
to
Comments
Neutral
to
stable
atmospheric
conditions
(Pasquill
stability
classes
D,
E,
and
F)
are
the
stability
categories
of
interest
at
CPSRA,
because
these
represent
the
conditions
when
winds
are
strong
and
not
materially
affected
by
solar
heating.
The
UC
Davis
wind
tunnel
accurately
models
the
surface
layer
of
the
atmosphere
under
these
stability
conditions.
The
wind
analysis
for
the
Draft
EIR
shows
the
wind
speed
and
turbulence
changes
that
would
result
in
winds
that
pass
over
the
Project
Site
and
then
pass
over
the
measurement
grid.
As
stated
in
the
Draft
EIR,
all
known
potential
shoreline
development
that
could
affect
winds
in
the
sailing
area
was
modeled
and
included
in
the
wind
analysis
and
testing.
The
development
is
represented
by
three
shoreline
projects:
(1)
Baylands
Project
Site
development
at
the
Baylands
to
the
west
of
CPSRA,
(2)
the
approved
and
under-construction
Executive
Park
development
to
the
north
and
northwest,
and
(3)
the
Candlestick
Point
–
Hunters
Point
Shipyard
development
to
the
north
and
northeast
of
the
CPSRA
sailing
area.
The
Candlestick
Point
development
would
not
affect
the
CPSRA
sailing
area
except
under
north
or
northeast
winds.
For
that
reason,
there
would
be
no
interaction
between
effects
of
the
Project
and
the
effects
of
the
Candlestick
Point
development
on
CPSRA.
(See
wind
analysis
results
on
pages
4.M-24
to
4.M-26
of
the
Draft
EIR.)
The
models
of
the
scenarios
tested
in
the
wind
tunnel
included
the
underlying
topography
of
the
Project
Site
based
on
proposed
site
grading.
Therefore,
it
is
not
necessary
to
add
25
feet
to
“account
for
the
projected
finished
grade
elevation
above
sea
level”
a
s
asserted
in
Comment
Letter
CPA
2.
The
models
and
the
wind
tunnel
analysis
were
sufficient
to
simulate
the
effects
of
the
Project
on
the
CPSRA
windsurfing
area
(see
Because
Baylands
Project
Site
development
would
have
more
area
than
the
Executive
Park
project
(which
has
more
tall
buildings,
is
denser,
and
is
closer
to
the
water
than
the
Baylands),
care
was
taken
to
model
and
test
the
entirety
of
Baylands
Project
Site
and
measure
the
effects
of
development
on
all
parts
of
the
windsurfing
area.
The
important
upwind
features
for
each
primary
wind
direction
were
modeled
in
the
wind
tunnel
analysis.
This
effort
was
sufficient
to
characterize
the
atmospheric
boundary
layer
accurately.
Areas
that
are
closer
to
the
shore
near
the
Baylands
Project
Site,
which
is
an
area
of
concern
to
CPA,
were
not
included
in
the
measurement
grid.
See
for
discussion
of
why
not
including
areas
that
are
closer
to
the
shore
near
the
Baylands
does
not
affect
the
analysis
in
the
Draft
EIR.
The
methods
used
to
conduct
the
wind
analysis
for
the
Draft
EIR
are
the
same
used
for
the
Executive
Park
project
by
San
Francisco
in
its
EIR
for
that
project,
which
would
also
affect
the
windsurfing
resource
at
CPSRA.
The
Executive
Park
project
considered
the
location,
magnitude,
and
extent
of
wind
speed
reduction
and
change
in
the
range
of
turbulence
intensity
over
a
measurement
grid.
Additional
data
from
a
2009
wind
tunnel
test
for
the
Executive
Park
project
were
included
in
the
wind
analysis
only
for
the
northern
part
of
the
test
grid
and
the
west-
northwest
and
northwest
wind
directions
that
would
not
be
affected
by
proposed
Baylands
development.
See
pages
4.M-11
to
4.M-12
in
the
Draft
EIR.
Combining
these
data
provides
a
more
comprehensive
view
of
wind
conditions
under
the
cumulative
effect
of
these
approved
developments
and
proposed
Baylands
development.
Brisbane
Baylands
Final
EIR
2.4-94
May
2015