Field Lysimeter Investigations -- Test results. Low-Level Waste Data Base Development Program: Test results for fiscal years 1990, 1991, 1992, and 1993; Volume 2

The Field Lysimeter Investigations: Low-Level Waste Data Base Development Program, funded by the US Nuclear Regulatory Commission (NRC), is (a) studying the degradation effects in EPICOR-II organic ion-exchange resins caused by radiation, (b) examining the adequacy of test procedures recommended in the Branch Technical Position on Waste Form to meet the requirements of 10 CFR 61 using solidified EPICOR-II resins, (c) obtaining performance information on solidified EPICOR-II ion-exchange resins in a disposal environment, and (d) determining the condition of EPICOR-II liners. Results of the second 4 years of data acquisition from the field testing are presented and discussed. During the continuing field testing, both portland type 1--2 cement and Dow vinyl ester-styrene waste forms are being tested in lysimeter arrays located at Argonne National Laboratory-East in Illinois and at Oak Ridge National Laboratory. The experimental equipment is described and results of waste form characterization using tests recommended by the NRC`s ``Technical Position on Waste Form`` are presented. The study is designed to provide continuous data on nuclide release and movement, as well as environmental conditions, over a 20-year period