Laserfiche WebLink
October 2000 -19- 003-2191 <br />expression of the dip and occurrence of the stratigraphy. However, structural roses <br />(rolls) and terraces of relatively low relief appear to be typical. Geophysical log <br />analyses and surface geology indicate the fingering of small strata that maintains the <br />structural character of the azea. These features aze most probably the result of <br />differential compaction azound the Tertiary sands located below and above the <br />depository. <br />The publication, "Earthquake Potential in Colorado", by Robert M. Kirkham and <br />William P. Rogers, published by the Colorado Geological Survey, was used as a <br />reference to determine if the depository site is within 200 feet of a fault that has had a <br />displacement in the Holocene time. This publication contains a map that presents the <br />location of potentially active faults in Colorado. There aze no active faults in the azea of <br />the SedaliaProject. <br />~~ <br />3.1.4 Seismic Impact Zones <br />According to a United States earthquake hazard map (from Algermissen and Perkins <br />1976), the depository site can be expected to have a 0.04 g earthquake every 50 years. <br />The earthquake hazard map is based upon a 90% probability level, therefore, there is a <br />10% chance the magnitude of the earthquake would be greater than 0.04 g. See <br />Appendix 2 for the details on earthquake analysis. <br />3.1.5 Unstable Areas <br />There is no indication that on-site or local soil conditions may result in significant <br />differential settling. The drill holes in the region present a geologic column of the strata <br />at the depository site. This site has about 5 to 10 feet of topsoil and subsoil that overlie <br />bedrock that is predominantly comprised of sandstone and claystone. This geologic <br />column would be considered stable and not subject to differential settling. <br />.~ <br />.~ <br />INNSI9IRI9ISWIiaPmn111000.EOC Sedalia Recycling Center and Depository <br />