Faber Construction 8/14/2017 - Laserfiche WebLink

ICITY OF EVERETT SPECIAL PROVISIONS 1 4. Manholes to the invert elevation, fully channelized, and cleaned. 5. Manhole casting set to final grade. I 6. Manhole construction in accordance with 7-05.3. 7. Lines free of debris and obstructions. 8. Bell and spigot joints properly seated as evidenced by successful completion of CCTV testing. I9. HDPE bead removal, where required, is accomplished without leaving sharp and jagged edges. I 7-17.4 Measurement Delete both paragraphs of 7-17.4 and substitute the following: Bid items of Work completed pursuant to the Contract Documents will be measured as I described in Division B — Bid Item Descriptions of these Special Provisions and Section 1-09 MEASUREMENT AND PAYMENT of the Standard Specifications. 7-17.5 Payment IDelete all paragraphs of 7-17.5 and substitute the following: 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 ISection 1-09 MEASUREMENT AND PAYMENT of the Standard Specifications. Supplement Division 7 by adding the following Section: I 7-21 TEMPORARY BYPASS PUMPING (******) 7-21.1 Description I This Work consists of furnishing, installing, and maintaining temporary facilities and equipment required to maintain the continual wastewater flow and to prevent wastewater discharge to the environment throughout the duration of constructing new or rehabilitating Iexisting sanitary sewer or combined sewer mains, or both, within the Project. 7-21.1(1) Combined Sewer(CS) The combined sewer (CS) network is generally located in the north portion of the City. I CS systems are pipes that convey stormwater runoff and wastewater in the same pipe. Drain inlets in streets and many existing roof drains, and yard drains are connected to the CS sewer system. Even minor precipitation can produce very sudden and large Iincreases in sewer flow. To assist the Contractor in sizing of bypass equipment, Table 7-1 represents flow estimates, for each of the influent combined sewers approaching the R4 and R39 I sites. These flows are estimated based on limited flow meter data and hydraulic model simulation. Bypass gravity pipes, pumps and forcemain pipes shall be sized to accommodate peak instantaneous flows that are likely to occur during the bypass I period. The contractor is advised to utilize temporary gravity pipe bypass systems to the maximum extent possible — especially for wet weather flows. All bypass systems must consider the possibility of peak flows that might exceed the capacity of the I bypass system and that resulting "overflows" must be contained or controlled in a manner that conveys flows to an existing CSO outfall route. Overflows or surcharges that either spill raw sewage or cause backups into customer laterals are strictly Iprohibited. I Sewer Regulators R4 and Division 7—STORM, SEWER,WATER May 2017 I R39 Modifications WO No.—UP3633 SP-179