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• 5) The space available to undertake corrective changes, 6) The topographical conditions in the vicinity of the slope, 7) The future geometry changes in the slope and vicinity due to the post-reclamation configuration, 8) Cost effectiveness of the corrective measure compared to the cost of additional movement, 9) Post-reclamation land use, 10) The public and environmental safety, 11) And any additional disturbance involved in preforming the corrective measure. Because of the small area available, slope flattening could not be performed to reduce the weight of the mass tending to slide. For an earthen berm or rock buttress to be effective on the site it would be necessary to excavate material from the toe of the slide and replace it with a large wall of either concrete, reinforced earth, or rock gabions. Because of the slide • configuration and steep slopes at the site the construction of a buttress would involve the use of selective soil backfill with a cement additive, tied together with wire mesh or geogrid which would allow for the placement of fill at a very steep slope. The buttress would need to be quit large in mass to replace both the weight of the excavated material and aid in resisting the landslide forces. The potential danger of further slide movement during excavation of the toe and the economic cost of such a large buttress ruled this method out of consideration. The zone below the toe of the slope is not susceptible to severe erosion, an occurrence that would undermine the toe area and remove earth that provides resistance to sliding, therefore a protective rockfill blanket or riprap would not be required to control additional movement. Soil stabilization methods such as grouting and injection methods, and the use of driven piles, sheetpiling, and retaining walls can be effective where limited areas require stabilization • but are very expensive procedures. 21-8