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<br />Monitoring wells 113), production wells 88-1 and 90-5, and water well 90-1 were <br />completed in 1990. Recompletion of final monitoring well (IRI-51 at the maxi-pad <br />was completed in 1991. Associated right-of-ways for phone, natural gas, electric <br />power, and access road were constructed in 1990. In January, 1991 the revised <br />NaTec Mine Plan was submitted, and approved by the BLM. Injection and <br />circulation of water began February 20, 1991 with sodium bicarbonate production <br />initiated on February 25, 1991. The revised NaTec monitoring plan was submitted <br />February 27, 1991. Also an amendment (to update plan) was submitted to the <br />Colorado Mined Land Reclamation Division February 27, 1991. Sodium <br />bicarbonate production was periodic through August 27, 1991. No injection or <br />production was performed after August 27, 1991 due to lack of markets. <br />fiydrotogy monitoring, shipment of product and process modifications were <br />primary activities during September -December, Process and hydrology monitoring <br />reports were submitted throughout 1991. <br />2.0 DESCRIPTION OF PROJECT AREA <br />2.1 Location and Regional Setting <br />The NaTec Minerals, Inc. sodium leases 141 are located in the Piceance Creek <br />Basin, Rio Blanco County of northwestern Colorado (see Figure 2-1 i. The sodium <br />lease tracts are located between Yellow Creek and Ryan Gulch approximately 41 <br />miles from Meeker, Colorado and 55 miles from Rifle, Colorado by automobile. <br />The climate of the area is semi-arid, with annual precipitation averaging 11-14 <br />inches. Precipitation generally occurs as snow from November to March and as <br />rain during the remainder of the year. The vegetation is predominantly sagebrush, <br />. pinyon, Utah juniper, western wheatgrass and stipa grass. <br />2 <br />