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additional topsoil material is needed beyond what field observations suggest is available, material <br />deemed suitable will be tested to the above parameters as well as to fertility . The fertility tests will <br />determine what nutrients to add, if any, to achieve production goals for the desired crops. <br />Additionally, if a new soil map unit is used, then the new unit will be sampled for the four above <br />parameters, plus initially for toxic elements such as selenium and boron. <br />Results of the analysis will be maintained by the mine and/or Division offices. Qualitative <br />monitoring for fertility will also be done on all reclaimed areas as part of the ongoing revegetation <br />success monitoring during the period of liability. Qualitative monitoring for fertility will include <br />unscheduled visual observations in conjunction with soil sampling will be conducted at <br />representative revegetation transect locations. <br />Literature Cited <br />Arnold, F. B. and D. J. Dollhopf. 1977. Soil Water and Solute Movement in Montana Strip Mine <br />Spoils. Montana Agricultural Experiment Station Research Report 106. Montana State University, <br />Bozeman. 129 p. <br />Barth, R. C. and B. K. Martin. 1982. Soil-Depth Requirements to Reclaim Surface-Mined Areas <br />in the Northern Great Plains. Colorado School of Mines Research Institute. Golden, Colorado. <br />182 p. <br />Barth, R. C. 1984. Soil-depth requirements to re-establish perennial grasses on surface-mined <br />areas in the northern Great Plains. Mineral and Energy Resources 27:1-20. Colorado School of <br />Hines Press, Golden. <br />Barth, R. C. ,and B. K. Martin. 1981. Soil-Depth Requirements for Reclamation of Surface-Mined <br />Areas in the Northern Great Plains -- the Big Sky Mine Plots. Colorado School of Mines Research <br />Institute. Golden. 16 p. <br />• (Revised 24 AUG O6) 2.05.4(2)(d)-22 <br />