Thomco Construction Inc. 6/14/2021

CITY OF EVERETT SPECIAL PROVISIONS Payment for bid items of Work completed pursuant to the Contract Documents will be as described in Division B — Bid Item Descriptions of these Special Provisions and Section 1-09 MEASUREMENT AND PAYMENT of the Standard Specifications. 7-09 WATER MAINS 7-09.1 Description Revise the first paragraph in 7-09.1 to read as follows: This Work consists of constructing water mains in accordance with the Plans, the Standard Specifications, these Special Provisions and the COE Standard Drawings, at the location shown on the Plans. 7-09.1(1) Definitions 7-09.1(1)D Pipe Zone Backfill I Revise the first paragraph in 7-09.1(1)D to read as follows: Pipe zone backfill includes material placed a minimum of 6-inches below the bottom of pipe up to a minimum of 12-inches above the top of pipe as shown on COE Standard Drawing No. 614 7-09.2 Materials Substitute the following for the corresponding material in the material list in 7-09.2: r Polyethylene Encasement 9.30.1(2) Special Provisions Fittings 9-30.2 Special Provisions Restrained Joints 9-30.2(6) Special Provisions Bolted, Sleeve—Type Couplings 9-30.2(7) Special Provisions for Plain End Pipe Aggregates: I Pipe Zone Backfill 9-03.22 Special Provisions Controlled Density Fill 2.09.3(1)E Special Provisions 7-09.3 Construction Requirements 7-09.3(5) Grade and Alignment Revise the first sentence of the third paragraph in 7-09.3(5) to read as follows: Provide minimum cover from the final surface grade to the top of the pipe of 36- inches for water mains less than 12-inches in diameter and 48-inches for water mains 12-inches or greater in diameter. Provide 60-inches as the maximum depth from the final surface grade to the top of all water main pipes. Adhere to both minimum and maximum depths from finish grades unless Plans indicate otherwise. 7-09.3(7) Trench Excavation Revise the second paragraph in 7-09.3(7)to read as follows: Excavate bell holes to the extent necessary to permit accurate Work in making and inspecting the joints. Keep the banks of the trenches as nearly vertical as soil conditions will permit, and where required to control trench width or to protect adjacent Structures, sheet and brace the trench. Provide trench widths to 1 foot above the top of the pipe in accordance with COE Standard Drawing No. 614. Standard excavating equipment shall be adjusted so as to excavate the narrowest trench possible. 7-09.3(7)A Dewatering of Trench Supplement 7-09.3(7)A by adding the following: I Furnish, install, and operate necessary machinery, appliances, and equipment to keep excavations free from water during construction. Water Main Replacement"V" Division 7—STORM,SEWER,WATER April,2021 WO No.—UP3730 SP—172 I