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MEDLIN Johnny R From: SNYDER Mark R Sent: Tuesday, November 03, 2009 7:50 PM To: MEDLIN Johnny R Subject: Notes on 5th Street Market Tree Hi Johnny, You asked me to provide some background information for our meeting tomorrow with Susan Muir and others on the bigleaf maple tree on Pearl Street. Here are some relevant notes. • Current appraised value estimate: $26,200. 1997 appraised value - $29,500. Factors in change — increased size, decreased condition value. I used project arborist Sperry's condition rating of 50 %. Formula factors, simplified, include basal area at dbh x species rating x location rating x condition rating. [Although I used Sperry's condition rating for this exercise, it could be argued that the tree is on the cusp of having a zero value or even a negative value, if the cost of removal exceeds milling or firewood value of a hazard tree.] See attachment. Loyj 1 Estimated ppraised Value of B. • Heritage tree status: NO if the historic factor is "not significant." YES if historic factor of "marginally significant" is determined. Ken Guzowski says PDD has no record of weighing in on the 1997 determination (the size alone would have qualified it at that time). Ken says, "I suspect it dates back to the period when the Walters Bushong Lumber operation was stilt in existence at this site (pre 1025)." 1936 aerial photos show several trees of size at this location. I had personal testimony from a Eugene citizen that the bigleaf maples on Adams Street were planted in 1917 by her grandfather. The maple in question at 5 Street Market would be at least that old, in my opinion. See attachment. 1 p; 1 2009 Heritage Tree Formula App... • Permit process: R- 6.305 -E lists criteria for approval. (a)1 would require an arborist's report documenting the existence of hazards or unsafe conditions and recommending removal. (a)2 would require a report showing the trees need to be removed in order to construct improvements. The current CUP application package does not propose the removal of this tree, although the arborist's report infers that the tree would become unstable and hazardous if the project is built as proposed. See attachment. NW= Admin Rule 1.305 -tree pres.pdf.. • Hazard determination: per your e-mail to Susan. Further private investigative work the applicant could do that might show the tree's condition has changed and it is now a hazard tree would include: a comprehensive report on the health of the tree; air spade excavation at the tree's base and behind the sidewalk, where the original trenching and excavation to four feet depth was done; and Resistograph 1