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for a to-be-determined time beyond operation. Results of the ground water monitoring program will <br /> be reported to the DMG, BLM, and the U.S. Environmental Protection Agency (EPA). <br /> Surface and ground water monitoring requirements will be defined and agreed upon with personnel <br /> from the BLM, EPA and DMG. The requirements will be formalized in an overall project monitoring <br /> plan. <br /> G-4 PROJECT WATER REQUIREMENTS <br /> AmerAlia will comply with all applicable Colorado water laws and regulations regarding injury to <br /> existing water rights. Water for solution mining, nahcolite processing, and other plant uses will <br /> come from a possible combination of shallow alluvial wells and a diversion along Yellow Creek, <br /> and/or a deep well on the project site. Underground pipelines from these water supply sources will <br /> be routed to the raw water storage tank and/or water storage pond. Underground piping then will <br /> be used to route the water to the nahcolite solution mining wells and process plant uses. <br /> The water rights which have been applied for will allow instantaneous demands of at least 449 gpm <br /> each from the deep water supply well, shallow wells and/or surface diversion. This will initially allow <br /> filling the 250,000 gallon raw water tank and optional 80 acre-feet water storage pond. Normal <br /> solution mining operations will then require an approximate average flow of 50 to 70 gpm. <br /> G-5 WATER MONITORING <br /> A comprehensive monitoring plan will be established as part of the experimental pilot operations. <br /> G-5.1 SURFACE WATER <br /> The U.S. Geological Service (USGS) maintains surface water quality monitoring stations both <br /> above and below the Rock School Sodium Lease Project area. More than 10 years' of water quality <br /> data, collected at least twice each year, are available for each station. Water quality analyses for <br /> the most current water year are discussed in Section 10.2 Surface Water. <br /> The upstream USGS station (number 09306242) is located in Corral Gulch, a tributary of Yellow <br /> Creek, about 5 to 6 miles from the Rock School Lease. The downstream USGS station (number <br /> 09306255) is in Yellow Creek approximately 20 stream miles below the project area. The USGS is <br /> anticipated to continue this surface water quality monitoring for the life of the project. Other USGS <br /> monitoring stations existed in the area of the Rock School Lease. However, only intermittent data <br /> are available for these stations. <br /> G:\LMM78545.00ZReclamationtRedame#h.DOC G-1 4 <br />