Does the Class Word always have to be the last word in column name? What about Units?

Sometimes we are required to store both a US and a metric column in the same table.  Is it ok to use the unit type as a suffix to the class word like AreaSqMi and AreaSqkm in the case of watersheds which cross both the US and Canadian borders?
Before everyone jumps on me let me explain.  The software environment we are using is from ESRI's (Geographic Information System) for displaying maps.  The popups for displaying attribute data can only display existing columns so no derived columns.

Use columns standarts
http://www.codeproject.com/Articles/22947/A-Naming-Scheme-for-Database-Tables-and-Fields
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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