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destruction of trail-side vegetation Mono Bor-Chloride must not be applied within six to twelve inches of the trail edge. The rate of application depends on the density of the trail-side vegetation. Retaining Walls Where trail construction cuts into hillslopes, retaining walls may need to be built. Any wall construction necessary within the upland area should use uniform material throughout the corridor. A natural and appropriate texture should be selected, such as field boulders. Field boulders look natural and are appealing in a woodland environment. Costs associated with building a boulder wall are dependent on site accessibility, stone size, and filter fabric used. Table 3: Cost of Additional Treatment Options Additional Treatment Options cost filter fabric $1.65/yd. soil sterilant (granular) $l.OO/lb. retaining (boulder) wall- includes base course preparation and installation $16/sq. foot EDUCATION Potential Uses and Advantages Education is an important consideration for the establishment of a trail system along Trott Brook. This trail system has the potential to be used asa valuable educational tool for the citizens of Ramsey and other Anoka County residents. Access to a natural area provides students with the opportunity to participate in hands-on learning and problem-solving in an outdoor environment as well as a sense of ownership in their education. Students can use a natural area to study and observe interactions between wildlife and their habitats. Studies such as these can be successful if the concepts of an environmental learning center are adopted. An environmental learning center provides many opportunities for students of all education levels. Elementary students may use the area for leaf collections or basic wildlife identification. Whereas post-secondary level students may conduct research on sustainable management of the area. Other possibilities include: native vegetation establishment 18 I I I I I I I I I I I I I I I I I I I