Thomco Construction Inc. 6/14/2021

CITY OF EVERETT SPECIAL PROVISIONS Provide traffic control and expose the water main at the connection allowing sufficient room for COE forces to make connection, expose the water main 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. Repair damage to existing pipe caused by the Contractor's operations at Contractor's expense. Proceed continuously once Work is started on a connection without interruption and as rapidly as possible until completed. City will not permit shutoff of mains overnight, over weekends, or on holidays. Notify COE water customers affected by water shut off if the connection to the existing system involves turning off the water. Provide a minimum of 48-hours prior notice. The Engineer will advise which property owners to notify. Depending upon the number of water customers affected by a shut-off, Contractor may need to perform the connection during times other than normal working hours. Do NOT operate valves on the existing system. Only City Utilities Department personnel may operate water system valves. Refer to 7-12.3 of these Special Provisions for tapping assembly connections, if any. 7-09.3(21) Thrust Blocking Revise the first sentence of the first paragraph to read as follows: Place concrete thrust blocking, as noted on the Plans and described in these Special Provisions, at bends where new ductile iron pipe connects to existing cast iron pipe. 111 Supplement 7-09.3(21) by adding the following: Provide mechanical joint restraining devices in place of concrete blocking on all fittings connecting ductile iron pipe to ductile iron pipe. Where shown on the Plans or as allowed by the Engineer, provide concrete thrust blocking at bends, tees, plugs and crosses, including City installed fittings. Provide cast-in-place concrete thrust blocking having a minimum of 1/4-square foot bearing against the fitting and minimum two square feet bearing against undisturbed soil and be clear of joints so as to permit taking up or dismantling joint. Provide a minimum measurement of 12-inches between the pipe and the undisturbed bank for all poured in place concrete thrust blocking. Form concrete blocking and pour using commercial concrete. Place blocking between solid ground and the fitting to be anchored with the area bearing on the pipe and on the ground in each instance being as Shown or directed by the Engineer. Place the blocking, unless otherwise shown or directed, so that the pipe and fitting joints, including nuts and bolts, can be accessible for repair. 7-09.3(22) Blowoff Assemblies Revise the first paragraph under 7-09.3(22) to read as follows: Construct Blowoff Assemblies at the locations shown on the Plans and in accordance with COE Standard Drawing No. 511. 7-09.3(23) Hydrostatic Pressure Test Supplement 7-09.3(23) by adding the following: I Water Main Replacement"V" Division 7—STORM,SEWER,WATER April,2021 WO No.—UP3730 SP—174 '