|
q.A -2�3
<br />DRAFT URBAN WATER MANAGEMENT PLAN
<br />savings resulting from these BMPs are unkn wn as they are difficult to quantify. The
<br />City implements these BMPs on the belief that they follow good business practices.
<br />The third BMP category includes conservation programs involving direct interventions
<br />with customers. The applicable BMPs in this case are la, 5, 6, 9, and 14. Appendix C
<br />contains a detailed potential implementation plan for these BMPs including performance
<br />measures, activity levels, costs, and estimated water savings over the period 2003 to
<br />2020.
<br />Table 1.4 summarizes the total costs associated with the BMPs. The immediate and
<br />aggressive implementation of toilet replacement associated with BMP 14 is the main cost
<br />component.
<br />1.2.4 BMP Water Savings and Cost Effectiveness
<br />All of the BMPs create water savings of a limited life span. This is an important point, as
<br />it differentiates this water resource from other more permanent sources such as recycled
<br />water. The BMPs also vary in their cost effectiveness —an important consideration.
<br />Figure 1.3 shows water savings over time for both passive and active conservation
<br />associated with the BMP implementation plan.
<br />The greatest amount of water savings will occur via the passive conservation associated
<br />with the improved efficiencies associated with toilets and clothes washers. At no direct
<br />cost for the City, the water savings will grow over time reaching 965 AFY by 2020 and
<br />1,584 AFY ultimately (about 2040 based on life cycle assumptions).
<br />The most cost effective BMP is BMP 5 with an estimated cost of $154 per AF. This
<br />assumes the City will continue to send water budgets to its large landscape customers
<br />over time and, on average, will continue to offer landscape follow -up surveys to sites
<br />every three years to maintain good irrigation practices.
<br />13
<br />....Tablej.4
<br />BMP Potential Costs
<br />2003/04
<br />2004/05
<br />2005/06
<br />2006/07
<br />2007/08
<br />1
<br />$66,600
<br />$68,509
<br />$44,400
<br />$44,204
<br />$50,700
<br />5
<br />$127,055
<br />$78,700
<br />$78,700
<br />$54,700
<br />$54,700
<br />[BNT ram
<br />P 6
<br />$145,500
<br />$133,000
<br />$108,000
<br />$108,000
<br />$o
<br />9
<br />$82,287
<br />$68,700
<br />$48,000
<br />$19,500
<br />$30,000
<br />P 14
<br />$950,000
<br />$1,125,000
<br />$650,000
<br />$0
<br />$o
<br />Total
<br />$1,371,442
<br />$1,473,909
<br />$929,100
<br />$226,404
<br />$135,400
<br />1.2.4 BMP Water Savings and Cost Effectiveness
<br />All of the BMPs create water savings of a limited life span. This is an important point, as
<br />it differentiates this water resource from other more permanent sources such as recycled
<br />water. The BMPs also vary in their cost effectiveness —an important consideration.
<br />Figure 1.3 shows water savings over time for both passive and active conservation
<br />associated with the BMP implementation plan.
<br />The greatest amount of water savings will occur via the passive conservation associated
<br />with the improved efficiencies associated with toilets and clothes washers. At no direct
<br />cost for the City, the water savings will grow over time reaching 965 AFY by 2020 and
<br />1,584 AFY ultimately (about 2040 based on life cycle assumptions).
<br />The most cost effective BMP is BMP 5 with an estimated cost of $154 per AF. This
<br />assumes the City will continue to send water budgets to its large landscape customers
<br />over time and, on average, will continue to offer landscape follow -up surveys to sites
<br />every three years to maintain good irrigation practices.
<br />13
<br />
|