WSP03310

• File Number: 8271.200
• Description: Colorado River Basin Salinity Control Program - Development and History - UCRB 13a Assessment
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 8/13/1979
• Title: WRC Study - Draft Summary Report
• Water Supply Pro - Doc Type: Report/Study

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To be conservative, this assessment has assumed that 7,500 acre-feet
Per year will be consumed per unit-sized high Btu gasification plant.
In terms of total consumption for the postulated'level of development being
nssessed, table 7.4 indicates projected annual consumption by subbasin,
given the siting pattern being assumed.

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With respect to low-Btu gasification, ,literature values of annual
Water consumption range from about 3,000 to 14,SOO acre-feet per unit-
sized plant. As with high-Btu gasification, the 'extent to which dry cool-
inR systems are employed has a major bearing on consumption., To be conser-
Vntive, this assessment has assumed that the single unit-sized plant pro-
jected in the accelerated synfuel case will consume 13,OOO acre-feet per
Year.

Water Requirements for EET Associated Growth

Any EET developments that occur will prompt a variety of other water
uses as well. For example, population growth will increase the demand
for municipal supplies, electricity will be needed for the EETs' facilities,
and the coal mining associated with gasification facilities will require
wnter for dust control and possibly for revegetation. In order to take
account of these spinoff effects, estimates of the resulting water con-
Sumption were made (see table 7.5). As can be seen, the amount of water
consumed by the associated growth is estimated to be, for the Upper Basin
as n whole, IS to 20 percent of the amount. consumed by the EET processes
themselves.

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THE "WITH EET" SCENARIOS

To each one of the three "without EET" scenarios discussed previousl7
cnn now be added the increment of consumption attributable to the .postu-
lated EETs and the growth associated with them {from table 7;5). Indeed,
to each "without EET" scenario can be added the estimated consumption of
either the baseline case or accelerated synfuel case projections.. For
example, year 2000 consumption by EETs and the associated growth for the
bnseline case totals 252,000 acre-feet per year for the Upper Basin
(table 7.5). This amount can be added to the projected depletions of

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1, In the San Juan River Bssj,n, New Mexico, actual consumption estimates
for the proposed WESCO and EI Paso Natural Gas facilities were used in
lieu of the 7,500 acre-foot estimate.

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