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have a total setback of 107 feet from the mining limits. The ditch was assumed to be carrying the normal level of water during the summer use time period. The mining side slope in this location will be near vertical. Case 4 -South Platte River. The South Platte River runs through the west side of the permit boundary. The mining depth was assumed to be 29.5 feet in this azea based on bore log information provided by Aggregate Industries -WCR, Inc. The proposed mining setback was set 40 feet from the property line. This provides a 160 foot setback from the mining limits to the outside top of bank of the river. The slurry wall was located 30 feet from the mining limits and 10 feet from the property line. The mining side slope in this location will be neaz vertical. Case 5 - Howe/Haller Pit. The north permit boundary is adjacent to Lafarge's Howe/Haller Pit. The mining depth was assumed to be 30 feet in the azea based on bore log information provided by Aggregate Industries -WCR, Inc. The Bull Seep is located approximately 5 feet north of the property line. The proposed mining setback was set 45 feet from the property line, providing a 50 foot setback to the Bull Seep. The Bull Seep was assumed to be carrying the normal level of water during the summer use time period. The Howe/Haller Pit was assumed mined to 30 foot depth and reclaimed with a 3H:1 V embankment. It was also assumed to be full of water with 2 feet of freeboard. The mining side slope in this location will be near vertical. Case 6 -Steady State Condition. The north permit boundary is adjacent to Lafarge's Howe/Haller Pit. The mining depth was assumed to be 30 feet in the area based on bore log information provided by Aggregate Industries -WCR, Inc. The Bull Seep is located approximately 5 feet north of the property line. The proposed mining setback was set 45 feet from the property line, providing a 50 foot setback to the Bull Seep. The Bull Seep was assumed to be carrying the normal level of water during the summer use time period. The Howe/Haller Pit was assumed mined to 30 foot depth and reclaimed with a 3H: I V embankment. It was also assumed to be full of water with 2 feet of freeboazd. The mined slope was assumed to be reclaimed with a 3H:1V embanlanent. The pit was assumed full of water with 2 feet of freeboard. The cross-sections located in the Appendix show the estimated phreatic surface associated with each case as well as the geometry used in the mining, shiny wall, and embanlanent conditions. METHODOLOGY The mining embankment configuration shown in the computer analysis represents the estimated conditions for this site. If mining conditions differ from the estimated conditions, the slope stability will need to be reevaluated on a case by case basis.