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HomeMy WebLinkAboutSDP201300046 Study 2014-05-20 r- Nov it III BARTLETT 5/20/14 Christopher D. Morin Brian M. Quinn BC Architects Engineers, PLC 5661 Columbia Pike, Suite 200 Falls Church, VA 22041-2868 Dear Mr. Morin and Quinn, Enclosed you will find a Tree Conservation Plan for the proposed project entitled "CV404A." The plan is designed to specify the necessary tree protection methods and procedures required to minimize construction stress on the trees that will be impacted by this project, as well as to identify existing hazardous trees that are recommended for removal. Trees are recommended for removal when they are located within 1.5 times their height from the proposed structure and meet the following criteria: o The tree is dead or in irreversible decline. o The tree is an unreasonable risk due to a structural defect that cannot be reduced to a reasonable risk level through the implementation of standard arboricultural practices The site is a mature hardwood forest on a low ridge overlooking the valley. It provides an excellent tower site where the tower and necessary equipment can be installed requiring the removal of only 3 trees and minimal disturbance to the surrounding forest due to no need for an access road. 2 large tulip poplar trees are to remain if at all possible, trees #7 and 8 It should be noted that the site is managed as a forest "garden"of sorts w/a walking path and care should be taken not to damage the ornamental species present. I have developed a table that describes each tree species, specific recommendations for their care, and any relative comments. The required tree protection procedures are broken up into 3 categories, pre-construction, during construction. and post- construction. Sincerely, .77nke,k0s,LL Cit/fai3C-C'C' Michael Abbott Arborist and Local Manager- Bartlett Tree Experts ISA Board Certified Master Arborist MS in Forestry BARTLETT ' r `,' Tree Conservation Plan CV404A — Dry Bridge Road Tree Table See sheet A-1 (Compound Plan) in the BC surveys and construction documents for tree table. Below is a brief summary of removals and/or treatments required to trees in that list: 3 trees (#9, 14, and 15) are to be removed as they are in the lease (construction) area. 2 large tulip poplar trees are to remain if at all possible, trees#7 and 8. All remaining trees are to be fertilized as detailed below. Nlow / *we BARTLETT tr ,e. Tree Conservation Plan CV404A — Dry Bridge Road Tree Protection Procedures Pre-construction o A composite soil sample shall be taken from the site for analysis of soil pH, organic content, nutrient levels of nitrogen, potassium, phosphorus, iron, magnesium, and manganese, and to establish cation exchange capacities. o All pines are to be treated for Southern pine beetle o The following trees/shrubs shall be removed without damage to surrounding trees 3 trees in lease area as shown in drawing A-1 will be removed. 2 large tulip poplar trees are to remain if at all possible, trees #7 and 8. o A tree protection zone shall be established to minimize soil compaction, and root, stem and branch damage during construction. The zone will be defined as an area that is 9 inches times the diameter at breast height (DBH) away from any tree to be protected. o A 4 foot high, orange, UV-resistant, high-tensile strength, barricade fabric fence shall be installed to define the Tree Protection Zone and limit access. During Construction o The Tree Protection Zone will be inspected and maintained on a daily basis. o Trees shall be inspected on a regular basis by a certified Arborist to evaluate for construction trauma, as well as for secondary pest and disease concerns, and irrigation needs. o No construction equipment, supplies or debris will be allowed in the Tree Protection Zone. Now Orr 7 E3ARTLETT Nsity o Trenching or excavation within the Tree Protection Zone will not be allowed without consultation with certified Arborist and will require specialized equipment to perform proper root pruning. o Root pruning will be performed under the supervision of a certified Arborist and will be performed in such a manner, and with equipment designed to cut through roots cleanly, so as not to tear roots. If roots greater than 2 inches in diameter are encountered during root pruning, they shall be traced back towards the tree using an air-spade and pruned by hand at a point specified by the Arborist. o Grade changes around trees shall be avoided. Excess soil and debris must be removed from site. Post-construction o Tree protection fencing shall be removed. o The following trees shall be fertilized based on specific needs as determined by soil analysis. Fertilization should include Mycorrhizae inoculation for mature trees, and should be applied using the sub-surface soil injection method. Trees#1-25 excluding the removed 3 trees (9, 14, and 15) in lease area as shown in drawing A-1 o Trees that have been affected by construction shall be pruned to remove any dead or damaged limbs. Any bark wounds shall be traced to promote wound closure. o Trees shall be inspected during the growing season following construction by a certified Arborist to evaluate for construction trauma, as well as for secondary pest and disease concerns, and irrigation needs. The inspection period will extend for up to 18 months following completion of construction.