Castle Pines North WC Plan2007

• Project Type: Water Conservation Plan
• Applicant: Castle Pines North Metropolitan District
• Project Name: Water Conservation Plan
• Title: Castle Pines North Metropolitan District Water Conservation Plan
• Date: 8/1/2006
• County: Douglas
• Water Conservation - Doc Type: Complete Plan

CDM

Section 8
Integrate Resources and Modify Forecasts

8.2 Identification of Proj ect-Specific Savings

The implementation of this Plan will not significantly affect future capital
expenditures associated with the development of groundwater supplies or surface
water supplies. Although water savings have been estimated to the best of accuracy
given the data available, there is not enough certainty in the data to support water
capacity design decisions. For instance, the estimates assume that a specified number
rebates are distributed every year. This number could vary pending on customer
behavior. Conservation monitoring data, discussed in Section 9.2 will provide further
insight into customer behavior and more accurate estimates of savings will be
possible in the future.

However, conservation savings could affect annual operating costs as well as the
amount of water rights purchased. Savings would reduce the amount of well
pumping, if the system if relying on groundwater. If surface water supplies are
acquired, conservation savings could reduce the amount of surface water needed,
reducing costs associated with pumping and storing the water. Substantial
conservation savings could also reduce the amount of water rights that need to be
purchased. Table 8-2 summarizes the potential cost savings is surface water supplies
were brought online.

Table 8-2 Changes to Project

Project Costs
Project Total
capacity capital Annual operating
Item (daily) costs ($) costs ($)
CAPITAL PROJECT IS ELIMINATED
Original project n/a n/a n/a
Savings from elimination n/a n/a n/a
CAPITAL PROJECT IS DOWNSIZED
Original project n/a n/a Energy costs for
pumping and
maintenance
Downsized project n/a n/a Reduction in
energy costs
Savings from downsizing n/a n/a Potential reduction
CAPITAL PROJECT IS POSTPONED
Present value of original project n/a n/a
Present value of postponed project n/a n/a
Savings from postponement n/a n/a
NEED FOR PURCHASED WATER IS REDUCED
Original estimate of purchases (AFY) 5.5 2,000
Revised estimate of purchases (AFY) 5.5 --1 ,800
Savings from reduced purchases (AFY) 5.5 --200

8.3 Revised Supply-Capacity Forecast

As discussed in Section 8.2, conservation savings will not significantly affect future
capital expenditures and consequently will not affect future design supply-capacity of
a surface water supply system.

8-2

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