Commercial production of ethanol in the San Luis Valley, Colorado. Final Report Page: 90 of 222
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All geothermal fluid not consumed in the ethanol process will be
reinjected. Fluid which is reinjected is exempt from regulation under current NPDES
permitting procedures. The brine cleanup system designed for the project is described
in Section 5.7.
18.104.22.168.3 Solid Wastes
The Oak Ridge Report recommends that ethanol producers consider
access to approved solid waste disposal sites during the design and site selection phases
(Oak Ridge National Laboratory, June 1981). Approximately 3975 kilograms per hour
(8770 pounds per hour) of solid waste will be generated by the Model Plant. Geothermal
wastes generated by the proposed San Luis Valley facility are exempt from the
Resource Recovery and Conservation Act (RCRA) (see Section 3.6.4). The Oak Ridge
Report concludes that none of the wastes associated with alcohol production are classi-
fied as hazardous solid waste under RCRA. Table 3-9 lists existing solid waste systems
in the San Luis Valley.
No problems are anticipated regarding external noise due to the prob-
able location of the ethanol production facility in an area with few sensitive receptors.
There are also plans to place much of the machinery in buildings and to incorporate
baffling in the design wherever appropriate.
The Department of Energy Draft Generic Environmental Assessment
Report for Conventional Fuel Alcohol Plants concludes that the severest impact on
local communities during the operational phase will likely be related to transportation
of feedstocks to the facility (Oak Ridge Nationl Laboratory, June 1981). If feedstock is
transported via truck, as is planned for the San Luis Valley plant, 24 round trips per day
will be required for a 60 million liters per year (15.85 million gallons per year) plant
(Oak Ridge National Laboratory June 1981). In addition, trucks will carry solid waste
for the plant to a disposal site. Increased truck traffic may cause traffic congestion,
safety hazards, road wear and noise. Automobile traffic will also increase as operations
and maintenance employees travel from the population centers to the rural plant loca-
tion. Figure 3-9 depicts main and secondary roads in the study area.
Fewer employees will be needed to operate and maintain the alcohol
production, plant than during the construction phase. In addition, since less specialized
skills will be needed, it is probable that more local residents will work at the facility.
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Hewlett, E.M.; Erickson, M.V.; Ferguson, C.D.; Sherwood, P.B.; Boswell, B.S.; Walter, K.M. et al. Commercial production of ethanol in the San Luis Valley, Colorado. Final Report, report, July 1, 1983; United States. (digital.library.unt.edu/ark:/67531/metadc874948/m1/90/?rotate=270: accessed January 16, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.