Road Construction Northwest Inc 12/31/2019

tCITY OF EVERETT SPECIAL PROVISIONS 1 7-09.1(1) Definitions 7-09.1(1)D Pipe Zone Backfill 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 I on COE Standard Drawing No. 615. 7-09.2 Materials Substitute the following for the corresponding material in the material list in 7-09.2: Ductile Iron Pipe 9-30.1(1) Special Provisions Ductile Iron Pipe 9-30.1(3) 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: Pipe Zone Backfill 9-03.22 Special Provisions Controlled Density Fill 2.09.3(1)E Special Provisions 1 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 watermains less than 12-inches in diameter and 48-inches for watermains 12-inches or greater in diameter. Provide 60-inches as the maximum depth from the final surface grade to the top of all watermain 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 1 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: Furnish, install, and operate necessary machinery, appliances, and equipment to keep excavations free from water during construction. Trench dewatering shall be included with the Work with no direct compensation made. i7-09.3(8) Removal and Replacement of Unsuitable Materials ■ Delete all three paragraphs of 7-09.3(8) and substitute the following: Remove Engineer classified unsuitable material at the trench bottom and replace with "Foundation Material Class A or B", or other Engineer approved imported or native material. Replace, at Contractor's expense, unauthorized over-excavation with Gravel Borrow. Compact Gravel Borrow to minimum 90-percent maximum density. ' Watermain Replacement"U" Division 7—STORM, SEWER,WATER October 1, 2019 WO No.—UP3698 SP—176