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Section 779.19(b) Continued. <br />• <br />Revised 11/20/80 <br />centage of cover varied from 16% to 33%, Considering the fact that <br />these sites were not re-topsoiled, received a minimum of seedbed <br />preparation, and were seeded with a grass that develops an open <br />stand that resists reinvasion of other plant species, these data <br />support the contention that a permanent and diverse plant community <br />can be established in the Kerr General Area where topsoil is re- <br />applied, a seedbed is prepared, and a diverse mixture of adapted <br />grasses, forbs, and shrubs is planted. Establishment of these <br />plants will be enhanced by the favorable summer precipitation which <br />amounts to 61% of the average annual precipitation. <br />Concern has been expressed over the revegetation potential at the <br />Kerr Mine Area. This concern is based on the relatively short <br />growing season and the low precipitation in the Kerr General Area. <br />In addition to the information presented in Section 780.18, Recla- <br />oration Plan, the following studies supporting revegetation feasi- <br />bility in North Park are submitted for consideration. <br />Summer season, (i.e., the growing season for cool season plant <br />species) is defined for purposes of this Section of the permit <br />application as the months of May, June, July, August and September. <br />Precipitation average for these months is 61 percent of the total <br />annual precipitation of 9.9 inches in the area. This information <br />is based on the Walden, Colorado, weather station data for the 19 <br />year period of 1951-1970. These figures can be checked by re- <br />ference to Table 15, Walden, Colorado, Average Monthly Precipita- <br />tion. <br />E.L. Smith in his Ph. D. dissertation, submitted in December, 1966 <br />at Colorado State University, Fort Collins, Colorado, titled "Soil- <br />Vegetation Relationships of Some Artemisia Types in North Park, <br />~J <br />779-77 as <br />