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INDIAN RIVER COUNTY JULY 25, 2014 INTERGENERATIONAL RECREATION CENTER 100% CONSTRUCTION DOCUMENTS D. Repair or replace trees, shrubs, and other vegetation indicated to remain or be relocated that are damaged by construction operations, in a manner approved by Architect. E. Maintain protection -zone fencing and signage in good condition as acceptable to Architect and remove when construction operations are complete and equipment has been removed from the site. 1. Do not remove protection -zone fencing, even temporarily, to allow deliveries or equipment access through the protection zone. 2. Temporary access is permitted subject to preapproval in writing by arborist if a root buffer effective against soil compaction is constructed as directed by arborist. Maintain root buffer so long as access is permitted. 3.4 EXCAVATION A. General: Excavate at edge of protection zones and for trenches indicated within protection zones according to requirements in Section 310000 "Earthwork." B. Trenching near Trees: Where utility trenches are required within protection zones, hand excavate under or around tree roots or tunnel under the roots by drilling, auger boring, or pipe jacking. Do not cut main lateral tree roots or taproots; cut only smaller roots that interfere with installation of utilities. Cut roots as required for root pruning. C. Redirect roots in backfill areas where possible. If encountering large, main lateral roots, expose roots beyond excavation limits as required to bend and redirect them without breaking. If encountered immediately adjacent to location of new construction and redirection is not practical, cut roots approximately 3 inches (75 mm) back from new construction and as required for root pruning. D. Do not allow exposed roots to dry out before placing permanent backfill. Provide temporary earth cover or pack with peat moss and wrap with burlap. Water and maintain in a moist condition. Temporarily support and protect roots from damage until they are permanently relocated and covered with soil. 3.5 ROOT PRUNING A. Prune roots that are affected by temporary and permanent construction. Prune roots as follows: 1. Cut roots manually by digging a trench and cutting exposed roots with sharp pruning instruments; do not break, tear, chop, or slant the cuts. Do not use a backhoe or other equipment that rips, tears, or pulls roots. 2. Cut Ends: Do not paint cut root ends. 3. Temporarily support and protect roots from damage until they are permanently redirected and covered with soil. 4. Cover exposed roots with burlap and water regularly. 5. Backfill as soon as possible according to requirements in Section 312000 "Earth Moving." TEMPORARY TREE AND PLANT PROTECTION 01 56 39 - 5