The cutting down of, and disposal of, all the wood, limbs, logs, bark and twigs and chips produced while performing the work. Trees to be Removed Throughout the duration of the contract, the City Engineer or his representative shall periodically provide a list of trees designated for removal to the CONTRACTOR. At the time of receipt of a notice to proceed, the CONTRACTOR shall remove these trees at the contract price. The CONTRACTOR shall not drop an entire tree. The tree must be taken down in parts. All parts or limbs must be secured by rope or cable and lowered to the ground. The CONTRACTOR shall then remove all debris generated from the actual removal. This shall include raking and\or broom sweeping the work area. Trimming, Cabling, and other Surgical Work Throughout the duration of the contract, the City Engineer or his representative shall periodically provide to the CONTRACTOR a list of trees designated for trimming, cabling, or other surgical work. At the time of receipt of a notice to proceed, the CONTRACTOR shall selectively prune, cable or perform any other surgery to the trees as instructed by the City Engineer at the contract price. All parts or limbs must be secured by rope or cable and lowered to the ground.