R L Alia Company 12/7/2020 - Laserfiche WebLink

CITY OF EVERETT SPECIAL PROVISIONS points can be installed along the proposed trench line alignment to remove perched water zones prior to excavation. Before dewatering operations begin, the Contractor shall have available on the Work site sufficient pumping equipment, or other machinery, or both, to assure maintaining continuous operation of the trench dewatering system. Supply power service to dewatering pumps including, but not limited to, electrical, hydraulic, gas, or diesel, Maintain the dewatering system to allow for continuous operation without interruptions. If necessary, provide 24-hour supervision and follow-up by personnel skilled in the operation, maintenance, and replacement of dewatering system components. Damage to Work in place and the excavation, including damage to the trench bottom, due to "boiling", material removal, or discharge pumping from the excavated area, that may result from negligence, inadequate or improper installation, maintenance and operation of the dewatering system, or mechanical or electrical failure of the dewatering system shall be Contractor's responsibility to repair at no cost to the City. Trench dewatering shall be included with the Work required for Storm Drain Pipe, Manholes, Inlets, Storm Drain, Catch Basins, Utility Restoration or other excavation activity performed as part of this Contract with no direct compensation made. 7-08.3(2)A Survey Line and Grade Delete both paragraphs of 7-08.3(2)A and substitute the following: Provide surveys required to construct the sewer line including, but not limited to, alignment stakes, offset stakes, grade hubs, and intermediate staking. Use main survey control points shown on the Plans, unless Engineer directs otherwise. If a Bid item for "Surveying" is not listed in the Proposal, then this item shall be included with the Work with no direct compensation made. Provide laser control equipment approved by the Engineer for setting pipe grades. 7-08.3(2)1 Side Sewer Connections Supplement 7-08.3(2)1 by adding the following: Make typical side sewer connections in accordance with COE Standard Drawing No. 602. 7-08.3(2)J Pipe Separation Pads Where vertical clearance between a proposed pipe and any other underground utility is 2 to 6 inches a pipe separation pad is required. The pad shall be 2 feet x 2 feet x 2 inches minimum and placed between the pipes. The pad shall be polyethylene (Dow Plastics Ethafoam 220) or approved equal. Pipe separation pads shall be included with the Work required for Storm Drain pipe, performed as part of this Contract with no direct compensation made. 7-08.3(3) Backfilling Delete the first paragraph of 7-08.3(3) and substitute the following: Perform trench backfilling only after inspection and approval of the installed pipe bedding zone backfill. Refer to COE Standard Drawing No. 614, 615 and the Plans for typical trench section backfill and compaction requirements. If the Engineer determines native material is not suitable for use as trench backfill, use "Gravel Borrow" conforming to 9-03.14(1) of the Standard Specifications. If there is an excess of suitable backfill material obtained from trench excavation at one location on the project, use it at other locations on the project or dispose of at Jackson Park Area Stormwater Separation September 2020 WO No. -UP3703 Division 7—STORM, SEWER, WATER SP—163