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least one worker shall serve to coordinate safe operations on the ground at all times when <br />work operations are in progress. <br />a. Whenever larger tree sections are being cut in a treetop, which may endanger persons <br />or property, such sections shall be secured by ropes and lowered safely to the ground <br />in a controlled manner. <br />b. All fire hydrants, meter vaults, water and gas shut off valves, backflow devices, <br />irrigation field controllers and similar facilities must remain accessible during the <br />course of work. <br />c. Noise levels, resulting from tree work operations, must be kept to a minimum at all <br />times. All tree work operations are subject to compliance with all local Noise <br />Restrictions. Operation of tree work equipment shall not take place between the hours <br />of 9:00 p.m. and 7:00 a.m. weekdays, or between 9:00 pm and 8:00 am on weekends <br />(Saturday and Sunday). Emergencies are exempt from any time restrictions. <br />d. All tree work done to SAPRF trees must comply with all tree related safety <br />requirements as stated in the safety standards ANSI Z133.1-1994 of the American <br />National Standards Institute, Inc. 1430 Broadway, New York, NY 10018. <br />1.13 SITE CLEANUP <br />Cleanup of any debris resulting from any tree pruning operations shall be promptly and <br />properly accomplished. The work area shall be kept safe at all times until all operations <br />are completed. Under no circumstances shall the accumulation of debris be allowed in <br />such a manner as to result in a hazard to the public, All debris from tree operations shall <br />be cleaned up each day before the work crew leaves the site, unless permission is given <br />by an authorized SAPRF representative to do otherwise. All lawn areas, parkways, streets <br />and sidewalks shall be raked and/or blown clean, and all brush, branches, or other debris <br />shall be removed from the site. Areas are to be left in a condition equal to or better than <br />that which existed prior to the commencement of tree pruning operations. <br />All cuttings, branches, wood chips and other debris shall be cleared from the site and <br />disposed of by the Contractor. The Contractor shall obtain permits required for this <br />purpose. Disposal expenses will be the Contractor's responsibility. Debris, such as wood <br />chips, shall be left on property only at the direct and specific request of the owner and an <br />authorized SAPRF representative. Firewood four (4) inches diameter or larger will be left <br />at the work location in a safe manner, unless the wood is not usable as firewood. All <br />firewood to be removed (wood four (4) inches of diameter or larger) must be authorized <br />by an SAPRF representative. <br />1.14 TIME FOR COMPLETION <br />If awarded this project, the Contractor agrees to complete the work within the time <br />parameters jointly agreed upon by the City, SAPRF, and the Contractor prior to work <br />commencement, unless specific time deadlines are specified elsewhere in these <br />specifications. Once the work has commenced, the Contractor shall diligently prosecute <br />the same to completion. <br />1.15 SUBCONTRACTORS <br />