City of Hines, Oregon Water System Improvements

Transcription

1 City of Hines, Oregon Water System Improvements IFA Board Meeting April 6, 2018 Presented by: Brandon Mahon, P.E., Anderson Perry & Associates, Inc. Judy Erwin, City Administrator, City of Hines

2 Background and History * Edward Hines Lumber Company Mill constructed in 1930 * City incorporated, and original water system constructed by 1930 * Original system included Well No. 2, Elevated Reservoir, and mostly 2-inch distribution system piping

3 Existing Water System * Supply * Storage * Distribution

4 Supply Well No. 1 (Shop Well) Well No. 2 (Tower Well) Well No. 3 (Jones Well) Well No. 4 (SMP Well)

5 Storage Bolted Steel Reservoir (600,000 Gallons) Elevated Steel Reservoir (250,000 Gallons)

6 Distribution * Many 2-inch (undersized) water main lines * Many steel lines installed as part of the original (1930) water system * Operators report leaks develop continually

7 Water System Master Plan Evaluation and Results * Supply * Storage * Distribution

8 Supply * Supply available compared to demands * Supply system can currently meet average and peak daily demands * Adequate redundancy with four wells; Well No. 4 (SMP Well) currently off line * Water quality * No violations * Water rights * One certificated water right, one permitted water right

9 Supply, cont. * Infrastructure quality and condition * Generally in fair condition * Wells No. 2 and 3 pump motors and buildings are in poor condition; City should consider replacement * SCADA, telemetry, and controls are in poor condition; City should consider upgrading * Currently not able to determine depth of water in wells * No backup power generation * Conclusion * Overall supply system is in good shape * Adequate supply to serve 20-year design population * Several improvements to complete over the planning period

10 Storage * Quantity of available storage * Current available storage = 850,000 gallons * Recommended storage from design criteria = 1,370,000 gallons (operating, equalization, emergency, and fire reserve storage) * Infrastructure quality and condition * Bolted Steel Reservoir is in poor condition; recommended to be maintained or replaced * Elevated Reservoir is in fair condition, foundation is in poor condition; recommended to be decommissioned

11 Selected Storage Improvements * New North Reservoir Alternative * Decommission Elevated Reservoir * Elevated Reservoir proposed to be demolished to reduce City liability * Construct New North Reservoir * An approximate 800,000-gallon reservoir proposed to be constructed on City-owned property * Maintain Existing Bolted Steel Reservoir * Leak repair, coatings, and potentially cathodic protection

12 Distribution * Hydraulic model for analysis of pressure and fire flow capacities * Existing System Fire Flows see Figure 5-2 * Infrastructure quality and condition * Several problem areas need to be addressed * Many areas with old, undersized mainlines * Hydrant coverage proposed to be increased * Proposed Distribution System Improvements * Proposed System Fire Flows see Figure 5-4

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16 Preliminary Cost Estimates * See Figure 6-1 Selected Water System Improvements * Selected Improvements Total Construction Costs * Supply System Improvements * $596,000 * Storage Improvements * $1,530,000 * Distribution System Improvements * $2,578,000 * Other Project Costs (Contingency, Engineering, etc.) * $1,826,000 * Total Project Cost (2017 Dollars): $6,530,000 * Total Project Cost (2019 Dollars): $7,199,000

17 City Financial Analysis * Infrastructure Finance Authority, Population, and Other Demographics Percent of Statewide MHI 1.25% Affordability Index ($/month) ACS Data ACS Data 52.0% 75.3% $27.34 $40.19 HUD LMISD 40.4% 40.4% * Current cost for 7,500 gallons of water for residential criterion = $28.01 * Hines is considered distressed

18 Next Steps * The City has completed a Water Rate Study * The Study evaluated different rate structures and determined necessary rate adjustments based on the proposed funding package developed in the One- Stop meeting * The City is currently in process of developing an RFP for engineering services to design the proposed improvements

19 Questions?