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Samson Oceanfront Park <br />City of Sunny Isles <br />Technical Specifications <br /> <br />TREE AND PLANT PROTECTION 02931-2 <br />A. Tree Mass Protection Fencing: <br />1. Tree mass protection fencing shall be 4 feet high 4 inch x 4 inch posts spaced 8 feet o.c., <br />with 2 inch x 4 inch rails between bays. <br />2. Individual Tree Protection Fencing: <br />a. Individual tree protection fencing shall be 4 inch x 4 inch posts spaced 8 feet <br />o.c., with 2 inch x 4 inch rails between bays approximately 24 feet x 24 feet <br />centered on the tree trunk, to a height of approximately 5 feet. <br />3. Root Pruning: <br />a. Planting soil and mulch materials shall be as specified under Section 02950. <br />b. Liquid fertilizer applied to root pruned and construction pruned trees shall be <br />Peters M77 Sequestered-Chelated Soluble Fertilizer by W.R. Grace and Co., <br />Cambridge, MA, or accepted equivalent. <br />c. Dormant oil spray shall be a dormant miscible spray, Volck Oil, by Ortho or <br />accepted equivalent. <br /> <br />PART 3 - EXECUTION <br /> <br />3.01 <br /> <br />INSTALLATION: <br />A. Tree Mass Protection Fencing: <br />1. Before start of demolition work and clearing and grubbing operations, tree protection <br />fencing shall be installed at all tree masses designated to be protected. Fencing shall be <br />installed a minimum of 15 feet beyond the drip line of trees to be protected, unless <br />otherwise accepted by the A/E. <br /> <br />B. Individual Tree Protection Fencing <br />1. Before start of demolition work and clearing and grubbing operations, tree protection <br />fencing shall be installed at all trees that are not in tree masses designated to be protected. <br />Fencing shall be installed a minimum of 15 feet beyond the drip line of trees to be <br />protected, unless otherwise accepted by the A/E. <br /> <br />C. Root Pruning: <br />1. Where construction will occur close to existing trees designated to remain, roots shall be <br />pruned. Proximity shall be as determined in the field by the A/E. <br />2. Root pruning is the physical cutting of tree roots to minimize root damage and promote <br />healing. Suitable means for root pruning include trenching, vibrating plow, or stump <br />grinder. Any method capable of tearing roots or disturbing the soil beyond the grading <br />limit is not allowed. <br />3. Root prune trees as noted to a depth of 24 inches by trencher, backhoe, or other approved <br />means. <br />4. Backfill root pruning trench with existing soil mixed with peat moss or well-rotted <br />sawdust to a mixture of approximately 75 percent soil and 25 percent humus. Tamp <br />lightly to set soil. <br />5. Apply mulch to a depth of 4 to 6 inches at minimum dripline radius around tree to reduce <br />compaction and increase moisture retention. Mulch depth shall be feathered to grade at <br />base of trunk. <br /> <br />D. Construction Pruning and Root Protection: <br />1. To compensate for root zone damage by cut or fill work, prune top of tree to approximate <br />percent of damaged root zone area. <br />2. Construction pruning shall consist of pruning the tree crown to compensate for root zone <br />damage due to construction operations. Construction pruning shall include a <br />fertilization/insecticide program. <br />3. Construction pruning shall comply with NAA Ref.1 for Class IV - Crown Reduction <br />Pruning and ANSI Zl33.1. <br />4. For those trees remaining within construction zone to be protected, apply mulch to a