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<br />Potential TDS reduction Net Federal
<br />salt removal at Imperial cost-effectiveness
<br />(1,000 tons) Dam (mg/L) in $/mg/L per year
<br />1,600 160 1.400,000-2,000,000
<br />768-1,975 77 -198 1,850,000-5,130,000
<br /> (range estimated as
<br />878 84 shown below
<br />103 8 795,000
<br />60 6 880.000
<br />98 8 519,000
<br />531 50 260,000
<br />183 15 518,000
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<br />CJ1 Alternative
<br />
<br />Base Case (desalting
<br />and evaporation ponds)
<br />
<br />Long Distance Transport
<br />
<br />Local Use
<br />Total potential for
<br />10 sites
<br />
<br />LaVerkin Springs
<br />McElmo Creek
<br />Big Sandy River
<br />
<br />Coal Slurry Pipeline
<br />100 million tons of coal
<br />50 million tons of coal
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<br />River Basin Salinity Control Forum.
<br />Saline water use technology in cooling
<br />powerplants, processing and
<br />transporting coal, and salt gradient solar
<br />power generation is not fully developed
<br />or widely accepted. The institutional and
<br />financial arrangements for
<br />Implementing the options considered in
<br />this study do not fil traditional modes,
<br />but rather lend themselves to a unique
<br />partnership between the Federal
<br />Government and industry
<br />The Special Report Executive
<br />Summary IS available by writing the
<br />Colorado River Water Quality Office, 0-
<br />1000, P.O. Box 25007, Denver, CO
<br />80225. The complete report will be
<br />available later for those who feel the
<br />need for more technical and thorough
<br />discussions of the concepts and
<br />alternatives studied.
<br />
<br />Meeker Dome Plugging
<br />Appears Successful
<br />
<br />Ground water levels are declining
<br />after completIon of the Phase I
<br />verification program. The Scott and
<br />James Wells were cleaned, tested, and
<br />plugged; and the Marland Well was
<br />cemented from a parallel hole.
<br />Monitoring will continue to determine
<br />the overall success of the plugging
<br />efforts.
<br />
<br />The Meeker Dome, site of several
<br />abandoned wildcat oil wells, !s a local
<br />anticlinal uplift in northwestern
<br />Colorado about 3 mires east of the town
<br />of Meeker. These oil exploration wells
<br />penetrated deep pressurized salt water
<br />aqUifers and were believed to be
<br />inadequately plugged, thus servmg as
<br />vertical conduits, allowing the saline
<br />water 10 enter the upper formations of
<br />the dome.
<br />The Meeker Well was identified as a
<br />significant point source of salinity to the
<br />Colorado River system For many years,
<br />it flowed 3 cubiC feet of water per second
<br />which contained about 19,200 mg/L of
<br />total dissolved solids, contritluting
<br />approximately 57,000 tons of salt to the
<br />river each year. The Bureau of
<br />Reclamation attempted to plug the well
<br />in 1968. In 1969, other wells began
<br />flowing and surface seepage appeared
<br />with variable amounts of salt transmitted
<br />to the river.
<br />Bureau of Reclamation began active
<br />planning studIes early in 1979, with the
<br />aid of a professional services contractor.
<br />The Scott, James. and Marland WellS
<br />were believed to be unplugged or
<br />inadequately plugged and acting as
<br />conduits. allowing saline water from
<br />subsurface geological formations to
<br />pollute surface aquifers and the White
<br />River. A verificatIon program was
<br />
<br />Coal slurry pipeline sysle,m- sCI1<:,mat'c
<br />
<br />Local us,," option Idelivery less Than 100 miles)-system
<br />sCl1emal,C;
<br />
<br />Initiated to confirm this hypothesis. This
<br />program called for the cleaning, testing,
<br />and plugging of the Marland, Scott, and
<br />James Wells and the installation of a
<br />monitormg network to record changes
<br />in the flow and salinity of surface
<br />seepage. The verification program dId
<br />not Include any work on the Meeker
<br />Well.
<br />After installing the mOnitoring
<br />network of observatIon wells and seep
<br />measurement stations, the well bores of
<br />the Scott and James Wells were cleaned,
<br />tested. and successfully plugged.
<br />Because major difficulties were
<br />encountered in cleaning the Marland
<br />Well bore, a parallel hole was drilled to
<br />1360 feet. An attempt was then made to
<br />plug the well by hydraulIcally fracturing
<br />the formation using a pressure
<br />cementing procedure from the nearby
<br />parallel hole. The success of the
<br />plugging operation Will be unknown
<br />until the observation wells have been
<br />monitored for a period of time.
<br />Moniloring IS continuing to assess tile
<br />results of the venfication program.
<br />Substantial cl1anges in saline seep flows
<br />have not been detected (as of August)
<br />but water levels In the Meeker Dome area
<br />have been declimng Since the plugging
<br />was completed
<br />Detailed monitoring will continue to
<br />record observation well water levels 8nd
<br />flows of saline seeps and water samples
<br />WIll be collected for water quality
<br />evaluation. The draft verification
<br />program report is expected from the
<br />contractor by mid-September It will
<br />explam the plugging program, present
<br />conclUSIons reached. and make
<br />recommendallons tor futur9 action.
<br />
<br />Contract Awarded For
<br />Feasibility Study On Big
<br />Sandy River Unit
<br />
<br />Reclamation awarded a $680,130
<br />contract to a Denver firm. R Sage
<br />Murphy and Associates, 10 investigate
<br />control methods of reducing salimty
<br />concentrations at Imperial Dam
<br />resulting from saline contributions from
<br />the Big Sandy River Unit
<br />
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