Hi Dave, I'm not sure if you remember me, but I took the GW Modelling class out in Denver 3 years ago. I was an intern for Pierre Glynn at the time. I'm now working at the Atlanta Georgia District and am attempting to use pHreeqc on a project I'm on. I'm trying to do basic speciation and am not sure if I'm inputting the DO correctly. I was hoping you could help. I am trying to speciate groundwater, spring, and surface water samples. I have DO measures for all of these but I assume the surface water is handled different since it is open to exchange with the atmosphere. I know that the DO is defined in the solutions section as O(g) phase but the alpha version of the program keeps prompting me to input a SI. Do I put in the SI as -0.7 (partial pressure in the atmos)? Is this OK to do for wells in a closed system? For the surface waters, do I add gas phases for O2 and CO2 with atmospheric pp's? HELP! HELP! HELP! Feel free to call or write. Which ever is more convenient. Thanks! Dianna Crilley
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:
https://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc/mail/msg00377.html
Email:dlpark@usgs.gov
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number [an error occurred while processing this directive] since Jan 22, 1998.