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NEW YORK CITY MONITORING PROGRAM
Pot
Sampling
A high-walled stainless
steel pot
the roof of HASL for fallout sampling.
is maintained on
The results of weekly
collections are given tn Table 6 and the cumulative curve is
shown
in Fig. 5,
lt was found that agreement between duplicate pots
is
not good,
This
is
mostly caused by
the
low ectivity
levels.
Such deviations are expected to be reduced by exposure for
one month periods
ment.
and by counting on
iower
background equip
The latter is shown partially by the data after 9/24/56,
but further
improvement will
equipment will
be possible as
more counting
allow longer counting times,
Tap Water
New York City
August
1954,
are given
tap water
has
been analyzed since
The results obtained since issuance of NYO-475I
in Table 7,
The weighted average value for
six months period is O.19 pyc/liter.
- 929 -
the
.