10,000 -—""
TTT
TT
TTT
TTT TTT
T
ma
~—@ Duplicates overlap within 2 o
Y
a
/
© Duplicates fail to overlap within 2 o
oy ,
a
y
1,000
E-
y/
LL
/
y
4
=
4
/
a
7
_
\
Lp pyri)
7
Porerriiy
100
7
7
1
10
¢
=
E
4
_
-
Uv
Aliquot A (pCi/g)
T
LY
4
Z
e
=
e
:
7
10% pea
1.0
ttl
10
tt
tt
100
top iityl
1,000
t
10,000
Aliquot B (pCi/g)
Figure A&. Acceptable quality control results for duplicate pairs analyzed for 239+240py
in soil by Environmental Analysis Laboratory. Results depicted are for concentrations
between | and 10,000 pCi/g. Broken line represents perfect agreement and is not a fit to
the data. One unacceptable pair is not shown.
32