[The Well] MYGRT Contaminant Transport Software
Michae...@deq.idaho.gov
Hello:
Would any of you know whether MYGRT contaminant transport software has been updated to a Windows format. I have an older version that outputs graphics files that are no longer in a format I can print or otherwise manipulate.
Thanks,
mjc
Michael J. Cook, Soil Scientist
Idaho Dept of Environmental Quality
Technical Services Division
1410 N. Hilton
Boise, ID 83706
(208) 373-0307 (phone)
(208) 373-0143 (fax)
Everett Ferguson
Summers et.al originally developed MYRT in the late 1980’s for EPRI. EPRI has keep the program current with the latest version being v3.1 dated 10/25/05 and this is a Windows version. Contact their web site (EPRI.com) for information on obtaining a copy. The last version I used was the DOS based v2.0, so I don’t know how “good” the new version is. Good luck.
Regards,
Everett Ferguson Jr., PG
7159, CHG 780
Supervising Hydrogeologist
Waterstone Environmental, Inc.
Office (714) 414-1122 x206
Fax (714) 414-1166
Cellular (562) 884-1795
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[mailto:blmailer-thewell=ngwa.big...@biglist.com] On Behalf Of Michae...@deq.idaho.gov
Sent: Thursday, March 12, 2009 4:00 PM
To: the...@ngwa.biglist.com
Subject: [The Well] MYGRT Contaminant Transport Software
Hello:
Would any of you know whether MYGRT contaminant transport software has been updated to a Windows format. I have an older version that outputs graphics files that are no longer in a format I can print or otherwise manipulate.
Thanks,
mjc
Michael J. Cook, Soil Scientist
Idaho Dept of Environmental Quality
Technical Services Division
1410 N. Hilton
Boise, ID 83706
(208) 373-0307 (phone)
(208) 373-0143 (fax)
You are subscribed as efer...@waterstone-env.com to "The Well" by National Ground Water Association
Michae...@deq.idaho.gov
Thank you Everett.
mjc
Bruce R. Hensel
I have used MYGRT Version 3.1 many times, and it is very good. Some of the features that I like include:
- solutions for saturated and unsaturated source terms
- solutions for infinite and finite aquifer thicknesses
- calculation of concentration at a point, vertical average (i.e., a well screen), and horizontal average (e.g., to a river)
- ability to vary source concentration as a function of time.
- the ability to change the rate of source infiltration over time (for example to simulate a decrease in infiltration after applying a cap)
- look-up tables of Kd values for metals as a function of pH (from published sources such as the USEPA Soil Screening Guidance)
- multiple different output options, and a lot of control on how results are calculated and displayed
Bruce Hensel
Principal Hydrogeologist
Natural Resource Technology, Inc.
23713 W. Paul Road, Ste. D | Pewaukee, WI 53072
262.522.1196 direct | 262.719.4505 cell
262.523.9000 main | 262.523.9001 fax
bhensel@naturalrt.com | www.naturalrt.com
Smarter Solutions, Exceptional Service, Value
From: blmailer-thewell=ngwa.big...@biglist.com [mailto:blmailer-thewell=ngwa.big...@biglist.com] On Behalf Of Everett Ferguson
Sent: Thursday, March 12, 2009
7:18 PM
To: the...@ngwa.biglist.com
Michae...@deq.idaho.gov
Thank you Bruce for the reply. Does 3.1 handle a planar source – like a wastewater land treatment/application field? The earlier version I have used in the past didn’t.
mjc
Bruce R. Hensel
The model has several source options. The discussion below pertains to unsaturated source solutions, which are most applicable to your question.
The source, from the user’s-perspective, is assumed to be planar, in that you enter a length parallel to GW flow and a width perpendicular to GW flow to define the source area. The analytical solution, however, limits the closest calculation point along the x-axis to a distance of zero, which is the downgradient edge of the source. In other words, you could use it to calculate concentration at points downgradient of a land treatment area, but you could not use it to calculate concentrations in groundwater beneath the treatment area.
It does, however, have a solution to calculate the concentration in the unsaturated zone beneath the source immediately above the saturated zone.
Hope this helps.
BRH