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TABLE IX-3 ALLOCATION OF SANDERSON GULCH ESTIMATED IMPROVEMENT COSTS Category Lakewood or Jefferson County Direct Drainage Costs including Channel Excavation, Slope Pro- tection, Drop Struc- tures, and Underdrains $ 88,000 Traffic Costs including Bridges and CUlverts 100,000 Utilities costs including Relocations of Water, 32,000 Sewer, Gas, and Telephone Reservoir Improvements for Public Safety including 117,000 Raising Berms, Spillways, and Associated Costs Portion of Project with Direct Multi-use Benefits for Parks and Open Space inCluding Grassing 15,000 of Open Channel and Combination Maintenance Road and Hiker- biker Paths Total Est. Construction Cost $ 352,000 25% Contingency for Engineering, Legal, Fiscal, and Miscellaneous 88,000 Costs Property Acquisition - should be considered as Multi-purpose 26,000 since it provides Open Space and Parks as well as nrainag~ Areas Total Est. Project Costs $ 466,000 -115- Denver Total $ 347,000 $ 435,000 71,000 5,000 -0- 61,000 171,000 37,000 117,000 76,000 S 484,000 S 836.000 121,000 135,000 209,000 l61,OOO $ 740,000 $l,206,000 I I TABLE IX-4 ALLOCATION OF NORTH S&~DERSON GULCH ESTIMATED IMPROVEMENT COSTS Category Direct Drainage Costs including Channel Excavation, Slope Pro- tection, Drop Struc- tures, and Underdrains Traffic Costs including Bridges and Culverts utilities Costs including Relocations of Water, Sewer, Gas, and Telephone Reservoir Improvements for Public Safety including Raising Berms, Spillways, and Associated Costs Portion of Project with Direct Multi-use Benefits for Parks and Open Space including Grassing of Open Channel and Combination Maintenance Road tind Hiker- biker Paths Total Est. Construction Cost 25% Contingency for Engineering, Legal, Fiscal, and Miscellaneous Costs Total Est. Project Costs -116- Estimated Cost , 160,000 88,000 25,000 5,000 10,000 $ 288,000 72,000 $ 360,000