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Bechtel <strong>Hanford</strong>, Inc.<br />

April 21, 1998<br />

Page 3<br />

IV. Comments<br />

Alpha Spectroscopy<br />

Q,P'uanterra<br />

Environmental<br />

Services<br />

Americium-241 by method RICH-RC-5062<br />

The LCS, batch blank, sample duplicate (BON680 and BON687) and sample results are within<br />

contractual requirements.<br />

Plutonium-238 -239/40 by method RICH-RC-5062<br />

The LCS, batch blank, sample duplicate (BON680 and BON687) and sample results are within<br />

contractual requirements.<br />

Uranium 234, -235 -238 by method RICH-RC-5062<br />

The LCS, batch blank, sample duplicate (BON680) and sample results are within contractual<br />

requirements. The RPD values for sample duplicate BON693 were slightly greater than the first<br />

level of evaluation criteria but the values met the second level evaluation criteria. Rich Weiss<br />

gave approval to report the data on 4/6/98.<br />

Gamma Spectroscopy<br />

Gamma Scan by method RICH-RC-5017<br />

The LCS, batch blank. sample duplicate (BON680 and BON685) and sample results are within<br />

contractual requirements_<br />

Gas Proportional Counting<br />

Total Strontium by method RICH-RC-5006<br />

The LCS, batch blank, sample duplicate (BON680 and BON690) and sample results are within<br />

contractual requirements.<br />

Liquid Scintillation Counting<br />

Carbon-14 by method RICH-RC-5022<br />

The LCS, batch blank, sample duplicate (BON680 and BON684) and sample results are within<br />

contractual requirements.<br />

Nickel-63 by method RICH-RC-5069<br />

The LCS. batch blank, sample duplicate (BON680 and BON688) and sample results are within<br />

contractual requirements.<br />

G0Oit

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