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Happy Valley Water & Sewer Study Technical Memorandum Table 2: Implementation Allowances 1. Raw Construction Cost Environmental, Legal, and Administrative (ELA) Allowance Engineering /Construction Management (CM) Allowance 2. Raw Cost + Engineering + Implementation Allowances __ Project Contingency 3. Total Capital (Fully Loaded) Cost 3.2 Water System Evaluation Results Raw Construction 10% 15% 1.25 x Raw Construction 1.5 x Raw Construction Improvements required to extend water service are identified in Figure 4. All proposed pipeline segments would have a maximum non -fire velocity and headless significantly below the 5 fps and 10 ft/1000 ft required by the City, under both land use scenarios. Therefore, there is no difference in pipeline sizing between Scenario 1 and Scenario 2. However, additional pipelines are required above those needed for Scenario I to serve parcels that are not currently developed (Scenario 2). These pipelines have been identified in Figure 4. Quantities of new hydrants and valves per segment of proposed pipe are also identified in Figure 4. Cost of the improvements are summarized in Table 3 and a more detail breakdown is included in Appendix B. Table 3: Water Improvements Cost Estimate Summary 1 Item • 8" 6,920 LF $1,128,000 • 7,640 LF $1,245,000 Piping 6" 1,100 LF $174,000 1,100 LF $174,000 Hydrants 19 $62,000 21 $69,000 PRV Station 1 $22,000 1 $22,000 Butterfly Valves 15 $12,000 16 $13,000 Raw Construction Subtotal' $1,400,000 $1,520,000 Implementation Costs 25 %' $350,000 $380,000 Capital Cost Subtotal $1,750,000 $1,900,000 Project Contingency 20 %' $350,000 $380,000 Capital Cost Total $2.1 million $2.28 million # Units 92 125 Ca ital Cost Per Parcel $22,000 $18,000 Rounded to the nearest 510,000 November 2016