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Mr. Huy A. Ho, P.E. The City of Pleasanton August 13, 2013 Page 4 COLLECTION SYSTEM DESIGN ASSUMPTIONS: • The City has conducted a CCTV video inspection of the EARS pipeline End the City has identified the "hot spots"; Carollo's review of the collection system T-Lok liner condition will focus on the hot spots only. • Snapshots of the CCTV video inspection will be added to the specificatic ns as an appendix. • The EARS and EATS trunk sewers will be connected at the following seven locations: o The four existing drop manhole structures located at Hopyard and Stoneridge, near the Chabot Canal and Stoneridge, Willow and Stoneridge, and Hacienda and Stoneridge. o The existing connection pipeline located near Stoneridge Road aid the Arroyo Mocho canal. o The existing manhole located near Santa Rita Road and Stonericge Drive. o We will design a new manhole at the intersection of Hopyard and Stoneridge Drive to connect the existing 18-inch sewer pipeline to the EARS pipeline. Note the 18-inch pipeline connects to the EATS. • Carollo assumes repair of the T-Lok liner within the existing manholes are simplistic and will be completed from the inside of the manhole. • The EARS pipeline repair work can be accomplished with a standard point repair and ceiling of the T-Lok joints and detailed design is not necessary. Refer to Figure #1 for an overview of the project.