Dear Dr. Parkhurst:
I am writing this note hoping that you would find time to answer my question regarding PHREEQCI.
I am using this program to simulate advection through the unsaturated column of soil with 7 layers. Each layer has different soil moisture chemistry (7 different solutions) and different (seven) sorbing site concentrations . I need to simulate the impact of the waste stream, which I consider ?Solution 0?, on the chemistry of the soil moisture. I am also simulating the removal of uranium (present in solution 0) by surface complexation processes. I have divided the soil column to 46 cells and related them with 46 Solutions: ?SOLUTION 1-11? for the upper layer ?SOLUTION 12-28? for the second layer etc.
My selective output file lists steps as specified by ?punch_cells? and "punch_frequency? commands preceded by 15 lines (all numbered ?step ?99?). I can trace last 7 lines (out 15 in question) to some parameters of my seven layers. The fist 8 lines are conundrum for me. The PHREEQC manual for SELECTED_OUTPUT refer to lines ??99? as other calculations. Would you please enlighten me what are these calculations whose results are presented in lines marked -99?
Marek Zaluski, Ph.D.
MSE Technology Applications
200 Technology Way
P.O. Box 4078
Butte MT 59702
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