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City of Rifle Water Conservation Plan Final Report -July 2008 <br />3.0 Proposed Facilities <br />The 2006 Water Master Plan presents infrastructure recommendations to meet future water <br />demands projected for the "no conservation" condition. Since that plan was completed, EQR <br />growth projections have changed. More rapid growth, as shown in Table 2-4, is now anticipated. <br />Accordingly, water system infrastructure planning has been revised. This section summarizes a <br />recent snapshot of the infrastructure plan. <br />3.1 Potable Water System <br />The 2006 Water Master Plan identified over $40M in potable water production, <br />transmission, and storage improvements to be needed over a 20-year period. This is to <br />upgrade/replace and expand the capacity of water production, storage, and delivery <br />facilities within the current service area only. It does not account for water distribution, <br />transmission, and storage infrastructure that would be constructed in areas outside of the <br />existing system where new development would occur. This would be funded by <br />individual developers. Similarly, this water conservation plan will not account for water <br />conservation-related cost-savings for down-sizing of infrastructure within future new <br />developments since the City itself will not be paying for that infrastructure, and thus, will <br />not realize significant savings. <br />A significant part of future potable system capital improvements is likely to be replacing <br />the existing Graham Mesa WTP with a new, higher-capacity facility (8 mgd vs. 4.5 mgd) <br />located near the existing pre-sedimentation pond. New finished water transmission lines <br />from the WTP also will be major projects. Without water conservation, the new WTP is <br />anticipated to be needed by about 2014. The plan also calls for pumping Colorado River <br />water to an expanded (2 mgd, reliable vs. 0.7 mgd, unreliable) Beaver Creek WTP. This <br />project, slated for 2010, may not be constructed based on a recent intake siting/feasibility <br />study's results, but would be replaced by additional capacity at the aforementioned new <br />WTP. As shown in Table 2-4, the 10-mgd treatment capacity total would be needed to <br />meet demands through 2025. Then, another expansion would be required. Water <br />conservation that effectively reduces peak day demand will have the potential to defer <br />these projects and/or allow a reduction in constructed capacities. Table 3-1 presents a <br />summary of capital improvement project costs in the "no conservation" case aggregated <br />by category over time. Appendix A contains a complete listing of individual projects <br />and costs. [Note: since the analyses in this plan were completed, the capital <br />improvements planned in the "no conservation" case have changed, though it is not <br />anticipated that the changes will affect the major findings of this plan]. <br />3.2 Wastewater System <br />The City is in the midst of constructing a new 2-mgd (expandable to 4-mgd) wastewater <br />treatment facility. Furthermore, few capacity improvements are anticipated to be <br />required for the primary wastewater interceptor lines within the City's existing collection <br />service area (see 2006 Wastewater Master Plan). Therefore, there is no significant <br />opportunity for water conservation to reduce wastewater-related infrastructure costs in <br />the near future in Rifle. For this reason, reduction of indoor water use is not a primary <br />focus of this plan, and no further analysis of water conservation effects on the wastewater <br />system is presented herein. <br />SGM # 99055A-388 21 Proposed Facilities <br />