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CASE # 3 <br />Environmental Expo 2006 <br />By: Chris Anderson, Zoning & Recycling Coordinator <br />Background: <br />As part of the 2005 work plan, the EPB participated in the 2005 Environmental Expo by staffing <br />a booth and presenting information on the City's wetlands. The 2006 Environmental Expo has <br />been tentatively scheduled for Saturday, April 29. The location of the Expo will again be at the <br />Ramsey elementary school. Each year, the EPB (and previously the EPTF) staff's one of the <br />booths at the Expo geared toward providing environmental education to residents. <br />Recommendation: <br />Staff would recommend that the EPB begin considering which topic(s) they will address at their <br />booth this year. It may be appropriate to formulate a subcommittee to brainstorm and report back <br />to the Board in February. <br />EPB Action <br />Based on discussion. <br />EPB: 1/9/06 <br />Exhibits <br />Canopy Cover Formula <br />1. Determine the square footage of the entire site <br />2. Determine the square footage of the impervious area <br />3. Determine the square footage of the pervious area <br />4. Determine the ratio between impervious area to entire site <br />(R = impervious area/entire site) <br />5. Multiply the ratio (R) by the square footage of the pervious area to calculate the required <br />canopy cover square footage <br />Crown Cover (Canopy Cover) for a species is determined by the following formula: <br />(((min. + max spread) / 4)2) * TC (pi) * (0.65 for preferred or 0.5 for acceptable species) <br />The formula determines the average spread of a species and then divides it by 2 to get the radius <br />(these steps are combined and that is why it shows as divided by 4). Then, the area of a circle <br />(the canopy cover) is calculated, which is pi * r2. This is then multiplied by a designated factor <br />