0.001 (- T TTT TTT C . r 1 TOTO TTT TT T TTT TT /7 / | /ee 4 .. @ Duplicates overlap within 2 ¢ 5 Pe 7S _ ,7 a 4 7 4 7 4 e+ 0.0001 |— e L. = <f _ 2 o _ 5 7 e / / 7 0.00001 |- r J a a Yo = . 7 / 7 0.000001 7 7 7 a ° 4 @ ° e a — e @ 7 Yo | e A Yo x 0.000001 e 7e a 7 a ,Y L 3Q é 4 $ -4 S 4 - / 4 — / 4 po | 0.00007 l eee ! 0.0001 bo 0.001 Aliquot B (pCi/g) Figure Al5. Acceptable quality control results for duplicate pairs analyzed for 241Am in vegetation by Environmental Analysis Laboratory. Broken line represents perfect agreement and is not a fit to the data. Twenty-five acceptable pairs involving zero or negative concentrations are not shown. 43