Agenda - Environmental Policy Board - 03/20/2017

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Soil Investigation mak a Design INC 2809 78t1' Ave. N., Brooklyn Park, MN 55444 pbrandt@a,soilinvestigations.us 1 651-260-3783 The tree preservation plan includes: A Delineation of all areas located within a 100-year floodplain; A tree survey overlay on the grading plan, which locates all significant trees within the developable areas of the site, identifying both diameter and species. Dead trees shall not be part of the survey, however diseased trees shall be included in the survey: All species of oak that have a DBH of four inches or greater; All evergreen species that have a DBH of four inches or greater; and All other trees that have a DBH of eight inches or greater; Existing soil conditions throughout the parcel; and Existing contour data for the entire property with vertical contour data consistent with city standards for all areas to be disturbed by proposed tree removal operations, extending for a distance of at least 50 feet beyond the limits of such areas. Tree preservation barriers: • All tree protection areas signed with "Tree Save Area" signs posted in addition to the required protective fencing. • Signs requesting sub -contractor cooperation and compliance with tree protection standards are recommended for site entrances. • Before any construction or grading takes place, snow fencing or erosion control fencing shall be placed around the borders of woodlots at the dripline of large trees to be preserved. Signs shall be placed along this fence line prohibiting grading beyond the fence line. • These fences will be orange polyethylene laminar safety fencing or of woven polyethylene fabric (silt fencing). • No construction shall begin until this work has been completed, inspected, and accepted by the city. • Silt barriers or similarly effective erosion control barriers shall be required in any area where erosion or siltation may cause damage to protected trees. • All protective tree fencing, staking or continuous ribbon and all erosion control barriers must be installed prior to and maintained throughout the land disturbance and construction process, and should not be removed until acceptable vegetation is established. • Critical root zone. The root system within the dripline is generally considered to be the critical root zone. To protect these critical root zones, a tree protection area shall be established around each tree or group of trees to be retained.