First, we found a map of surficial geology for Vancouver Island (Newton P. and A, 2010).The map was assessing the impact of the vadose zone parameters on the geology structure of Vancouver Island. Secondly, we then geo-referenced the image of the map into ArcGIS. Thirdly, we digitized the map separating our geological units and assigned parameters accordingly based on Newton and Gilchrist (2010). Fourthly, we used the polygon to raster conversion to rasterize the soil map data (cell size 100). The soil type data was then ready for the infinite slope analysis that was conducted for the deterministic MCE. However, the General MCE required that we reclassify the soil types according to their ability to prevent landslides (see table below) and conduct a Fuzzy membership to obtain normalized data from 0 to 1.
Reclassification of soil type for General MCE
| Soil Type | Old Classification | New Classification |
| Clay | 1 | 6 |
| Silty/gravelly/sandy clay | 2 | 2 |
| Weathered intrusive and metamorphic rock | 3 | 2 |
| Weathered volcanic rock | 4 | 3 |
| Weathered fine grained sedimentary rocks | 5 | 5 |
| Weathered coarse grained sedimentary rock | 6 | 4 |
| Sand | 7 | 7 |
| Sand and Gravel | 8 | 8 |
| Gravel | 9 | 3 |
Digitized figure of different soil of Vancouver Island