S
ome
dust
created
by
power
sand
i
ng
,
saw
i
ng
,
gr
i
nd
i
ng
,
dr
illi
ng
,
and
other
construct
i
on
act
i
v
i
t
i
es
conta
i
ns
chem
i
ca
l
s
known
to
the
S
tate
of
Ca
li
forn
i
a
to
cause
cancer
,
b
i
rth
defects
or
other
reproduct
i
ve
harm
. S
ome
e
x
amp
l
es
of
these
chem
i
ca
l
s
are
:
• l
ead
from
l
ead
-
based
pa
i
nts
,
•
crysta
lli
ne
s
ili
ca
from
br
i
cks
and
cement
and
other
masonry
products
,
and
•
arsen
i
c
and
chrom
i
um
from
chem
i
ca
ll
y
-
treated
l
umber
.
Y
our
r
i
sk
from
these
e
x
posures
var
i
es
,
depend
i
ng
o n
how
often
you
do
th
i
s
type
of
work
. T
o
reduce
your
e
x
posure
to
these
ch em
i
ca
l
s
:
work
i
n
a
we
ll
vent
il
ated
area
,
and
work
w
i
th
approved
safety
equ
i
pment
,
such
as
those
dust
masks
that
are
spec
i
a
ll
y
des
i
gned
to
f
il
ter
out
m
i
croscop
i
c
part
i
c
l
es
.
WARNING
< US
A
on
l
y
>
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