5.7. SR 01-27-2003 - Laserfiche WebLink

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MAR-23-2001 10:05 612 985 4499 P.09×09 SUBDIVISION TREE PRESERVATION GUIDELINES FOR THE CITY OF LAKEVILLE 01/00 City of Lakeville Ordinance requires subdividers to inventory and prepare a tree plan for all trees existing within a suMivided area that are at least 6 inches in diameter at 4.5 feet above the ground. Tree preservation plans must be signed by a Minnesota Licensed Forester or Landscape Architect. The developer of the subdivision will be required to post security for tree preservation on an individual lot basis for each lot containing a "saved" significant tree. All of the trees on a site to be saved must be protected with tree preservation fencing at the tree drip lines before grading begins. Diseased trees shall be removed and where the growing season prevents identification of diseased trees, identification and removal shall occur the following growing season. 'fhe developer's forester must certify at the conclusion of all improvements to the site that the tree preservation plan has been accomplished prior to building permit issuance. All "save" trees that are damaged or removed by site grading will require replacement at a ratio of 2:1 as per the Lakevitle Subdivision Ordinance. One of the two following procedures, or a mixture of the two, may be used to meet the plan requirement. INDIVIDUAL TREE BASED PLAN. Typically a tree plan can best be optimized by looking at each individual tree on a proposed site in comparison with a grading plan. This is especially true for most residential sites where trees can sometimes be saved between houses, streets and so forth. The'following are required for this type of tree plan: l) numbered tags on each significant tree 2) a tabulation of tagged trees with tag numbers, diameter, species and status (save, remove or custom save) 3) a map showing existing contours, proposed grades, building pads, and uti/tries, along with the surveyed locmions of all inventoried trees and their status, and location of protective tr~e fcnce. TREE STAND BASED PLAN. In many cases tree preservation can work 'best by grouping trees in a "stand" rather than considering individuals. In this case trees to be preserved are saved as a unit complete with under-story vegetation. This works best on commercial/industrial sites where there are fewer opportunities to maintain small treed intervals in grading. Key to the process is identifying the save stands and clearly making their perimeters. The following are required tbr this type of tree plan: 1 ) numbered tags on each significant tree within ten feet of the stand boundary between the save and l~mov¢ zones 2) a tabulation of tagged trees with tag numbers, diameter, species, and status (save, remove or custom save) 3) a tabulated census of trees within each stand showing counts for each species 4) a map showing existing contours, proposed ~ades, building pads, and utilities, along with the tree stands to be saved and removed plus surveyed locations of all inventoried "perimeter" trees, m~d location of protective tree fence. Components of the Individual and Stand methodologies can be combined to create the best preservation plan. For example, a stand of trees within an Individual Tree Plan might be treated as a stand as outlined abo¥c. TOTAL P.O9