D. ROCK EXCAVATION Rock Excavation shall be excavation in solid rock formations in the original bed or welldefined ledges more than 12” in thickness, or detached solid masses of stone more than 1/2 cubic yard in volume which cannot be excavated, loosened or removed by any process other than by drilling or by the use of pneumatic equipment. No soft or disintegrated rock, or rock that has been broken or previously blasted, or broken stone in rock fill or elsewhere, will be classified as rock excavation. Unless indicated in the proposal, payment will be made for "Rock Excavation" as an Extra Work item. E. HAUL OR OVERHAUL Unless specified in the proposal, no payment will be made for "Haul" or "Overhaul." The cost of hauling material to or from the Work regardless of distance shall be considered subsidiary to and a part of the applicable Contract bid price. F. CLEAN UP The Contractor shall at all times keep the site of the Work free from accumulations of waste materials or rubbish caused by his employees or Work, and at the completion of the Work he shall remove all rubbish from and about the Work and all tools, equipment, scaffolding and surplus materials and shall leave the site clean and ready for use. All sewers, conduits, pipes and appurtenances, and all tanks, pump wells, chambers, buildings and other structures shall be kept clean during construction; and as the Work or any part thereof approaches completion, the Contractor shall systematically and thoroughly clean and make any needed repairs to them. He shall furnish, at his own expense, suitable tools and labor for removing all water and cleaning out all dirt, mortar and foreign substances. The City’s Project Manager will not approve the final estimate of any portion of the Work until after Final Completion is achieved and the Work found satisfactory. The City may remove or cause the removal of the rubbish, surplus materials, and traffic control devices and deduct the cost from the final estimate or charge the cost to the Contractor if the cleanup is not properly performed by the Contractor within 3 business days of written notice from the City’s Project Manager.