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CITY OF EVERETT SPECIAL PROVISIONS IDIVISION 7 — DRAINAGE STRUCTURES, STORM SEWERS, SANITARY SEWERS, WATER MAINS, AND CONDUITS I7-04 STORM SEWERS 7-04.1 Description IRevise the first paragraph in 7-04.1 to read as follows: This Work consists of constructing storm sewers to lines and grades as shown on the I Plans and in accordance with COE Standard Drawings, the Standard Specifications and these Special Provisions. 7-04.2 Materials I Delete the first and second paragraphs in 7-04.2 and substitute the following: Use the following pipe materials for storm sewers: Rigid IDuctile Iron All sizes Thermoplastic l PVC (Polyvinyl Chloride) All sizes PE Polyethylene All sizes PP Polypropylene, dual wall 12 to 27 inches IPP Polypropylene, triple wall 30 inches and above Materials shall meet the requirements of the following sections: IReinforced Concrete Storm Sewer 9-05.7(2) Standard Specifications Pipe Concrete Storm Sewer 9-05.7(3) Standard Specifications I Pipe Joints Solid Wall PVC Storm Sewer Pipe 9-05.12(1) Special Provisions & Joints I Profile Wall PVC Storm Sewer Pipe 9-05.12(2) Standard Specifications & Joints Corrrigated Polyethylene Storm 9-05.20 Standard Specifications I Sewer Pipe & Joints Corrugated Polypropylene Storm 9-05.24 Special Provisions Sewer Pipe IRevise the last paragraph in 7-04.2 to read as follows: When schedule A or B storm sewer pipe is specified in the Plans, provide the specified I schedule and diameter of either concrete, PVC, or PE/PP materials shown in the Storm Sewer Pipe Schedules Table. Contact the Olympia Service Center Materials Laboratory to determine if joints have I been approved for pipe diameters larger than those listed. On the web at: http://www.wsdot.wa.gov/biz/mats/QPL/QPI.cfm Or by mail at: IP.O. Box 167 Olympia, WA 98507-0167 (360) 709-5442 111 Sewer Regulators R4 and Division 7—STORM, SEWER,WATER May 2017 I R39 Modifications WO No.—UP3633 SP-153