| Column | Purpose | Description |
| 1 | Landtype Association | This indicates the LTA that the ecological land type
is in. Within the north half of the GMNF one of the following: 0 - High elevation 1- West side of mountains 2 - East side of mountains 3 - Northeast portion of the National forest, unique soil mineralogy |
| 2 and 3 | Geomorphic Process | Within the north half of the GMNF, one of the following
two digit codes indicating the dominant glacial or periglacial geomorphic
process:
02 - subglacial scouring (shallow tills) 03 - subglacial deposition (basal tills) 05 - superglacial deposition (ablation tills) 10 - glacial outwash 11 - slack water deposition 13 - subglacial scouring and subglacial deposition in subalpine climatic zones above 2500' 14 - soils subjected to repeated freeze-thaw cycles in alpine climatic zones above 3000' |
| 4 | Modifer | One of four letters that further defines the ELT:
a - wet soils that are permanently or seasonally saturated b - shallow soils, typically less than 5' to bedrock c - units that are dissected by numerous intermittent streams d - typical or modal conditions; unit fits the definition of the geomorphic process |
* An example of an ELT code: 103a. Lta 1, west side of mountains (1), basal till (03), wet (a).
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