Road Construction Northwest Inc 12/31/2019

CITY OF EVERETT SPECIAL PROVISIONS , 7-09.3(9) Bedding the Pipe 1 Revise the first paragraph in 7-09.3(9) to read as follows: Place sand backfill for pipe zone bedding to the depths shown in COE Standard Drawing No. 615. Compact sand backfill for pipe zone bedding around the pipe to 90-percent of maximum density by approved hand-held tools, so as to provide firm and uniform support for the full length of the pipe, valves, and fittings. Determine maximum in place density using nuclear method (ASTM 2922-17). Determine laboratory maximum dry density and optimum moisture content using the Modified Proctor Method in accordance with ASTM D-1557. Take care to prevent damage to the pipe and its protective coating. 7-09.3(10) Backfilling Trenches Revise the last paragraph in 7-09.3(10) to read as follows: Place a minimum 12-inch sand cushion between the watermain and existing pipelines or other conduits when encountered during construction. Supplement 7-09.3(10) by adding the following: Backfill trenches in accordance with COE Standard Drawings No. 614, 615 and 620. The Engineer may authorize the use of Gravel Borrow or suitable native material in non-paved areas. 7-09.3(13) Handling of Pipe Supplement 7-09.3(13) by adding the following: Supply watermain pipe having ends plugged by manufacturer immediately after I manufacturing to eliminate debris entrance into the pipe during shipping and storage. Leave plugs in place until installing pipe in trench. Failure to supply the debris plugs or to maintain the debris plugs until pipe installation may be cause for111 City to reject the pipe or require Contractor to disinfect the pipe in accordance with AWWA C651 and as witnessed by City Water Quality personnel prior to installation. 7-09.3(19) Connections , 7-09.3(19)A Connections to Existing Mains Delete the last paragraph in 7-09.3(19)A and substitute the following: Only City Utilities Department personnel may make connections to existing watermains after successful pressure testing, disinfection and flushing. Schedule arrangements with the City Utilities Department a minimum of five business days in advance of making connections to the existing watermain. Assemble necessary materials, equipment, and labor necessary to properly complete the Work, in conjunction with COE forces, prior to beginning the connection. Provide traffic control and expose the watermain at the connection allowing sufficient room for COE forces to make connection, expose the watermain at the connection, including properly shoring and sheeting the excavation in accordance with requirements of WISHA, RCW 49.17 including WAC 296-155. Should City personnel determine the excavation and shoring and sheeting do not meet the requirements of WISHA, RCW 49.17, including WAC 296-155, City personnel will notify Contractor to make necessary modifications to bring the excavation and shoring into compliance prior to City personnel entering the trench. I Repair damage to existing pipe caused by the Contractor's operations at Contractor's expense. Watermain Replacement"U" Division 7—STORM, SEWER,WATER October 1, 2019 WO No.—UP3698 SP—177