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
Please note that some U.S. Geological Survey (USGS) information accessed through this page may be preliminary in nature and presented prior to final review and approval by the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the sole responsibility of the user.
Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.
The URL of this page is:
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 1129 since Jan 22, 1998.