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�� City of Redwood City Recycled Water Task Force Report March 3, 2004 to be feasible and cost-effective. However, the City needs to drill one or more test wells in order to verify costs and the amount and quality of water provided. Drilling the test wells and analyzing data would take several months and cost approximately $100,000 per well. Thus, it was not possible to produce a quantifiable proposal for groundwater use by the Task Force deadline. The Todd Engineers study indicated a network of wells could recover between 500 and 1,000 AF/Y of op tabte water and woald cost between $1,000,000 and $2,000,000 per production well, including other required equipment, engineering, and permitting. Data developed by City staff for the Task Force indicated that one production well for irri ation at Red Morton Park would cost approximately $250,000, including other required equipment, engineering, and permitting (see Attachment 5). Not including the playing fields (which will have synthetic turf under Alternative TF), Red Morton Park has an irrigation water demand of approximately 47 AF/Y. The Task Force strongly recommends that the City, at the earliest opportunity, begin exploratory well work, to determine feasibility and costs for using groundwater to irrigate large sites (e.g., Red Morton Park) and possibly as a supplementary source of potable water. The Task Force understands that certain preparatory work, including exploring permitting requirements and conducting an environmental site assessment for potential well sites, needs to be performed prior to implementing an exploratory well program. The Task Force believes it would be highly desirable to know the feasibility of using groundwater prior to the expiration of the existing Master Water Sales Contract with the San Francisco Public Utilities Commission ("SFPUC") on June 30, 2009. 3.2.2. OPM #2 — Consider a Commercial Toilet Replacement Program The City currently offers financial incentives to replace (a) toilets in single-family units, (b) toilets in muiti-family units, (c) clothes washers in single-family units, and (d) multi-family and commercial clothes washers with more water•efficient devices. However, the City does not currently offer financial incentives to replace toilets in commercial buildings with ultra-low flow toilets. Based on information provided by Dr. Whitcomb, a program targeting restaurants and retail/wholesale buildings would reduce potable water demand by approximately 48 AF/Y in 2004. Since all new toilets are required to be ultra-low flow, natural life-cycle replacement of commercial toilets results in a moving baseline for measuring reductions in potable water demand. Thus, the potable water demand reduction achieved from this program declines over time (e.g., 31 AF/Y in 2010 and 0 AF/Y in 2020). The cost of this program is estimated to be $500,000. In the event that additional potable water demand reductions are needed in the future, the Task Force recommends that the City consider implementing a program providing financial incentives to replace toilets in restaurants and retail/wholesale buildings with ultra-low flow toilets. 3.2.3. OPM #3 — Promote Conservation To increase community awareness of the opportunities for water conservation, the Task Force recommends that the City consider implementing the following conservation promotion ideas.