Road Construction Northwest Inc 12/31/2019

CITY OF EVERETT SPECIAL PROVISIONS ' 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. 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 pipe. ' Supplement 7-09.3(21) by adding the following: Provide mechanical joint restraining devices in place of concrete blocking on all fittings connecting new ductile iron pipe to new 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 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(23) Hydrostatic Pressure Test Supplement 7-09.3(23) by adding the following: Provide City approved double-check assembly for the purpose of testing and ' flushing. City will not charge for the water used in this operation. Successfully complete hydrostatic pressure test prior to starting disinfecting new watermains. 7-09.3(23)A Testing Extensions from Existing Mains Delete 7-09.3(23)A. 7-09.3(24) Disinfection of Watermains Delete 7-09.3(24), including subsections, and substitute the following: 7-09.3(24) Flushing and Disinfection of Watermains Flush, disinfect with a chlorine solution and obtain passing coliform bacteria test reports before placing new watermains or extensions to existing mains in service. Submit flushing and disinfection procedures in accordance with this section. Provide submittal containing, at a minimum: • Location of taps and other appurtenances used for chlorination and flushing purposes, • Location of the sample collection taps, Watermain Replacement"U" Division 7-STORM, SEWER,WATER October 1, 2019 WO No.-UP3698 SP-178