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Pay Island and the Autzcn TraiLafter he game. <br /> In areas where the soil composition and sunlight is adequate to support good grass cover, <br /> allow the grass to remain at a height of 6-8 inches. It was noted that in areas where there is <br /> good grass cover and at a relatively tall height, soil compaction and loss of vegetation was <br /> minimal. Similarly, soil compaction was minimized in areas that had a thick layer of leaf <br /> mulch on the ground. <br /> Additional measures have been discussed over the last couple of years. Although they will <br /> not be implemented at this time, they should be considered in the future if the above <br /> recommendations are not satisfactorily addressing the issue. These additional measures <br /> include the following: <br /> • Where feasible along the main corridor path, create abark-surface path immediately <br /> adjacent to the paved path. This would extend the width of the path without increasing the <br /> amount of impervious surface. Due to width constraints, this bark-surface path may not be <br /> continuous. The path would also serve as an extension of Pre's Trail from the north end of <br /> the Autzen footbridge to the intersection of the main path with the existing Trail. <br /> • The planting of native shrubs directly adjacent to the path may serve as obstructions for <br /> those traveling off of the paved path, making this option less desirable. The establishment <br /> of such shrubs may be difficult as they would be vulnerable to trampling. <br /> • Place temporary or permanent fencing adjacent to specific locations along the path to <br /> encourage individuals to stay on the path or to protect sensitive areas. Fencing placement <br /> must address public safety concerns. Fencing can be designed with arustic/natural <br /> character. <br /> 8. West Alton Baker Park. Numerous pedestrians were observed walking off paved surfaces in <br /> the western portion of the park. Trail widening has occurred in certain locations along Pre's <br /> Trail, and some informal trails have been established through open fields en route to the <br /> stadium. <br /> Recommendation: Continue monitoring through the next season for site specific impacts <br /> both to Pre's Trail and the creation of new trails. Focus baseline documentation in these <br /> <br /> ' areas. Additionally, parking attendants in West Alton Baker Park can provide directional <br /> assistance to individuals, encouraging existing trail usage. <br /> 9. Grass Parking Areas around the Science Factory. The movement of vehicles on unpaved <br /> surfaces can cause soil compaction.. A majority of the areas where vehicles park is already <br /> compacted due to historic plans for additional building sites and,these areas are not of great <br /> concern. However, once soils are wet from rain, there is a greater chance of disturbing <br /> vegetation and creating erosion issues. Some of these impacts were observed as a result of <br /> vehicles parking off of paved areas. Although a setback from water bodies is addressed in the <br /> annual parking permit, several cars were noted to have been parked within 7 feet of the top of <br /> the bank. <br /> ABP Monitoring- 2002 Season Summary Page 4 <br /> <br />