ADDENDUM%20NO%201%2026017%202026%20Water%20Mains%20Replacement

The City of Salina is upgrading its water distribution system under Project 26017, replacing aging water mains and associated infrastructure. The addendum clarifies several construction details, including valve‑box removal depths, topsoil requirements, concrete coring procedures, shoring responsibilities, and pipe pressure class specifications. Contractors may use either open‑cut or directional‑boring methods (with two mandated bores under the storm sewer) and must adhere to specific material standards for service lines and meter pits. No new work items are added; the addendum only amends general notes and deletes an outdated pipe‑thickness clause. • Valve‑box removal: minimum 24 in depth; 3′ × 3′ roadway removal if in roadways. • Topsoil: at least 6 in of commercial‑grade topsoil at all excavations. • Concrete coring & replacement: detailed repairs for roadway, driveway, and sidewalk sections. • Shoring: contractor must provide all shoring per OSHA requirements. • Pipe pressure class: Class 350 for ≤ 12″ ductile‑iron pipe; Class 250 for ≥ 16″. • Meter‑pit & service‑line details: specific pit dimensions, copper material required, adapters for sub‑1″ meters to be supplied by contractor.