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<br />Table 4 presents a breakdown of the assumed quantities and costs for the construction of improvements for
<br />the three levels of protection. It should be noted that the soil excavation, levee removal, riprap lining, and
<br />soil cement quantities are based on the available base mapping.
<br />
<br />Another alternative that can be considered by the City is the purchase of an insurance policy that would cover
<br />the cost of damage caused by flow in excess of approximately 7,000 cfs (capacity of existing channel without
<br />the existing levee) but less than approximately 11,350 cfs (capacity of existing channel with existing levee,
<br />before weir construction). To elevate this alternative, it would be necessary to determine the property value
<br />within the effected area and the potential damage from the design flow.
<br />
<br />
<br />Levee removal cy $ 10 1,616 $ 16,160 1,795 $ 17,950 1,975 $ 19,750
<br />Unclassified excavation cy $ 6 812 $ 4,872 1,079 $ 6,474 1,346 $ 8,076
<br />Tree removal each $ 300 6 $ 1,800 6 $ 1,800 6 $ 1,800
<br />Riprap/bedding cy $ 35 2,445 $ 85,575 3,167 $ 110,845 3,889 $ 136,115
<br />Soil Cement cy $ 60 2,383 $142,987 2,947 $176,832 3,611 $ 216,638
<br />SUBTOTAL $251,394 $ 313,901 $ 382,379
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<br />Survey/Construction % 1.5% $ 3,771 $ 4,709 $ 5,7'36
<br />Testing Materials % 2.5% $ 6,285 $ 7,848 $ 9,559
<br />Dewatering % 20% $ 50,279 $ 62,780 $ 76,476
<br />Mobilization % 5% $ 12,570 $ 15,695 $ 19,119
<br />Engineering % 10% $ 25,139 $ 31,390 $ 38,238
<br />-Coniiiigency- ,- ___ _u__ __% - -~ -20% $ 50,279 $ 02,780 - -$--16:416---'
<br />TOTAL COST $399,716 $499,102 $ 607,983
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