DM type | Primary DM number | Disturbance matrix name | Disturbance matrix description |
---|---|---|---|
1 | 1 | OSE Corehole Pads close to mill—not lbh1 | OSE corehole pads close to the mill not located in the lbh subregion; flat topography; minimal disturbance |
2 | 2 | OSE Corehole Pads close to mill–lbh | OSE corehole pads close to the mill located in the lbh subregion; cut and fill used for pad construction |
3 | 3 | OSE Corehole Pads far from mill—not lbh | OSE corehole pads far from the mill not located in the lbh subregion; flat topo-graphy; minimal disturbance |
4 | 4 | OSE Corehole Pads far from mill—lbh | OSE corehole pads far from the mill located in the lbh subregion; cut and fill used for pad construction |
5 | 2 | Permanent Well Pads and Roads close to mill | Permanent well pads, roads or where a large area has been cleared close to the mill |
6 | 4 | Permanent Well Pads and Roads far from mill | Permanent well pads, roads or where a large area has been cleared far from the mill |
7 | 3 | Pipelines aboveground | Pipelines aboveground |
8 | 4 | Pipelines belowground | Pipelines belowground |
9 | 5 | Seismic Lines 1960–1999 | Seismic lines (1960–1999; no burning; bulldozing, minimal soil disturbance; winter operation; roll-back in same year); 0.27 pixel disturbed |
10 | 6 | Seismic Lines 2000 to present | Seismic Lines (2000 to present; no burning; bull-dozing, minimal soil disturbance; winter operation; roll-back in same year); 0.17 pixel disturbed |
11 | 2 | Surface Mining | Surface Mining |
12 | 6 | Unspecified with regeneration | Unspecified light disturbance where forest regen-eration is apparent in imagery; 0.17 pixel disturbed |
13 | 7 | Unspecified without regeneration | Unspecified disturbance where forest regeneration is not apparent in imagery; 0.27 pixel disturbed |