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APPENDIX D Eugene Basin Planning Unit Cost Tables for Estimating Capital Project (CP) Costs August 2009 INTRODUCTION The following tables provide the unit costs and back -up documentation associated with material and construction costs for various drainage system components. The purpose of these tables is to provide general guidance with respect to CP costs and to allow for cost comparisons between CPs. These unit costs are based on original and refined unit costs used for the Eugene Master Plan in 1999 with a 15% increase to all original unit costs to reflect current conditions (2007). These increased costs are only applicable to the scale of projects in the City's preliminary storm system CP list. They are not applicable to projects that are of a much smaller or larger scale than those preliminary CPs. Tables 1 through 4 — Tables 1 through 4 provide estimated capital /construction costs for each CP type (e.g., pipe installation, open channel improvements, and detention and water quality facilities). Table 1 provides cost estimates for all of the CP types except for pipes and structural water quality treatment systems (i.e., CONTECH Storm Filter). Table 2 provides cost estimates for drainage pipe, based on pipe size and depth of cover. Table 3 provides detailed back -up information regarding estimated construction costs for drainage pipe installation. Table 4 provides cost estimates for five different sized structural water quality facilities (i.e., CONTECH Storm Filter). For many of the CPs in Table 1 and the pipe costs in Table 2, the unit cost must be multiplied by a quantity such as acre -feet, square yards, or lineal feet to estimate the total capital cost for that CP. Tables 5 through 7 — Tables 5 through 7 provide the back -up information that was used to estimate the unit costs for CP types listed in Table 1. Table 5 provides unit costs for the various elements that comprise each CP (e.g., labor, excavation, etc.). Table 6 provides the quantities of each element that comprise the CPs (e.g., 1 hour of labor, 6 cubic yards of excavation, etc.). Table 7 provides the detailed back -up capital /construction cost information for each CP type based on Tables 5 and 6. (Note: a revision was made to the Natural Resource Enhancement and Open Waterway Improvement Construction unit costs November 2001. Seethe addendum following this summary, prior to the tables.) Table 8 — Table 8 provides the estimated maintenance costs for each CP type. For many of the CPs, the maintenance cost must be multiplied by a unit such as acre -feet or square yards in order to come up with the total estimated maintenance cost. Estimated maintenance costs have been calculated and reported for flood control CPs. A maintenance cost is not provided for capital projects to increase the pipe sizes based on the assumption that maintenance of piped systems typically includes catch basin /manhole cleaning I:A 945042m\ task0300 Asdmps \vol=cl\appendixg.doc