From: 	Jeff Tarling
To:	Jean Fraser
CC:	Bradley A. Roland;  David Margolis-Pineo
Date: 	11/15/2012 2:09 PM
Subject: 	Back Cove CSO Project 

Hi Jean -
 
In review of the Back Cove CSO project we would request the following:
 
a) Tree protection standards - existing Linden trees along Baxter Boulevard
should be protected with the standard tree protection measures.  This would
include construction fencing / protection of the tree root zone, language in the 
contract to include no storage of construction equipment or materials within the 
drip line area of existing trees.  Pro-active tree pruning prior to construction activities
is needed to reduce the possible damage to the trees in the project zone.  This is
typical of our past stormwater projects and has proven to be valuable in this regard.
 
The web sites below outline information on preventing tree damage:
http://treesaregood.com/treecare/resources/Avoiding_Tree%20damage.pdf
 
http://www.extension.umn.edu/distribution/housingandclothing/DK6135.html
 
b)  Tree replacement - In the event that existing trees are lost due to construction
tree replacement value of $200 per tree to fund replacement can be contributed
to the Portland Tree Trust fund for replanting.  We would prefer to plant the
replacement trees using 'in-house' crews.
 
c)  Slope / shoreline stabilization -  All disturbed areas with the Shoreland Zone
shall be re-seeded, and planted with native shrubs.  This may include: Comptonia
or 'Sweetfern', Bayberry or Juniper.
 
In review of the tree & landscape impact - we have been working closely with the 
project team to outline protection measures and replanting efforts.  
 
Thanks,

Jeff Tarling
City Arborist