PROJ00079

• Contract/PO #: FS0012X
• Contractor Name: New Castle, Town of
• Contract Type: Loan
• Water District: 0
• County: Garfield
• Loan Projects - Doc Type: Feasibility Study

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August 8, 1995
Honorable Mayor Rippy and Board of Trustees
Town of New Castle
Page 3

.Located immediately after the "Data/lnformation For Planning" section of this report, you will
find an EOR calculation worksheet. This particular worksheet calculates the summertime EOR
(including irrigation) as well as the winter time EOR. The EOR is redefined and calculated on
this worksheet as was defined in Case #87CW373. Behind the Town of New Castle EOR
calculation worksheet, you will find Table 1, which is a compilation of EOR's in New Castle
considering only the number of EOR's calculated for old town and recent development
activity. It is important to note that this particular compilation of EaR's in New Castle does
not include Castle Valley Ranch. Behind Table 1, you will find Table 2 which is another
compilation ofEQR's in New Castle. This particular table computes the total number of EOR's
in town, including Castle Valley Ranch, as of August 1,1995. This compilation also considers
all the EOR's committed to other subdivisions as of August 1, 1995.

Finally, behind Table 2 is located Table 3, which is a final compilation of EOR's in New Castle.
This particular table identifies the EOR estimate considering the count as of August 1, 1995.
This considers all the physical taps currently on the water system for New Castle. For
example, the committed number of units identified in this compilation for Woodward
Subdivision is now identified at zero versus the previously calculated 23 units. This is
because the Wo'odwarc;J Subdivisi'on is' not yet developed and does not have any units
currently using water on New Castle!s-watersystem.

II. EaR DEMAND AND LEGAL WATER'SUPPlY

Attacherl:to thrs-report you will also find water rights worksheets which have been prepared
specifically for this report. This water rights worksheet equates physical flow at the, intake
structure to the water treatmentpJant back to tile number of EOR's that the flow can support.
More specifically" two water rights wOfksheets have ,been prepared, one equating tbe flow
rate ofO~9-cfs-backto'EOR's, and the second computing 1.282 cfs, back to EOR's. With the
0.9 cfs flow rate, the number of units that can be supported with this flow rate is 741 EOR's.
To relate this back to information discussed earlier (i.e., compilation of EOR's in New Castle),
we see that when referencing Table 1, which identified the number of EaR's in old town plus
commitments (not including Castle Valley Ranch), 570 EaR's are currently on the system.
In essence, without the consideration of Castle Valley Ranch, there are 171 EOR's available
(or not spoken for) before the Town is legally out of water.

The second water rights worksheet considering the 1.282 cfs, equates this flow rate to 1056
EDR's. This particular worksheet can be correlated back to the previous compilation of EOR's
in New Castle (Table 2) which does include Castle Valley Ranch. Under this scenario, there
are 761 units in Castle Valley Ranch, old town and committed on the water system.
Therefore, in both scenarios, it is seen that the EOR demand on the New Castle water system
is less than the legal water supply.

_SCHMUESER GORDON MEYER, INC.