09/13/1999 Council Packet - Laserfiche WebLink

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09/08/1999 11:44 612 - 472 -1040 • KJOLHAUG ENVIRONMENT PAGE 04 Revegetation activities will begin in April 2000 (or upon completion of grading of the ponds). Seeding will be completed in June 2000. Management activities associated with the establishment of the ,community will be completed by October, 2003. The longterm viability of these areas is expected to be good, with low to moderate on- going maintenance requirements. C. F tin g_'i?itooded Areas -- Invasive Shrub Removal and Manasmeat, Wooded areas throughout the property have been subject to historic disturbance by livestock. As a result, invasive shrubs have become a dominant component of the understory, coxnpeting with more desirable native species and shading herbaceous ground cover. Management of these shrubs generally involves shrub removal and direct herbicide application to prevent regrowth. A second treatment may be required after 1 -2 years, with a light burn, as feasible. This treatment is appropriate for areas A10, B 1, 134, Cl, C3, C4, and El . Approximately 7.5 acres are proposed for this treatment. Costs for this treatment are expected to range from $2,500. — $5,000 per acre. Total cost for areas receiving this treatment is $19,000 -- $37,500. Shrub .removal will begin during April and May, 2000, and be completed by October. 2001. The long -term viability of approach is uncertain. Without ongoing control activities, these areas are likely to be re-invaded due to the abundance in seed sources on adjacent properties. D. Wetland Vegetation Restoration dE3 (Wetland E) currently is dominated by a reed canary grass monoculture, which has low aesthetic and wildlife habitat values. Proposed activities would include removal of the existing plant community by chemical treatment and scraping the upper 12 inches of soil. The area would then be reseeded with a suitable wet meadow mixture. Estimated cost to complete the restoration of this 0.5 -acre wetland is $3000. Scraping and vegetation removal will be completed in spring, 2000. Revegetation will be • completed in.June, 2000. Management activities associated with the plant community establishment will be completed by October, 2003.