10r T T T TTT TT 7 T T ey, _ Yo 4 - & Duplicates overlap within 2 o \ 7 + / _ a / 7 Weds edt ihm 4 nleesrantr) a / s = a / 3 - 2 | af a 1 / L / L / 7 0.01 i 7 7 / / 4 7 / Y 7 / 7 7 7 LY 4 4 7 7 4 7 4 4 / = LY A 1 vA7 4 ; | ~ 7A : _ 7 4 / l L L j I it 0.01 l L 0.1 i \ I popu 1.0 Aliquot B (pCi/g) Figure A39. Unacceptable quality control results for duplicate pairs analyzed for 20S in marine sediment by Environmental Analysis Laboratory. Broken line represents perfect agreement and is not a fit to the data. concentrations are not shown. 67 norteeet ieeepee oc ha + Three acceptable pairs involving zero