Amend 0003 25BA013_SUPPLEMENTAL DRAWINGS.pdf

These documents are detailed engineering drawings for a hydraulic turbine system, specifically for the Lower Monumental Lock and Dam project by the U.S. Army Corps of Engineers. The drawings include comprehensive technical specifications for multiple components such as the Generator Bay Transverse Section, Sump Pump and Drain Piping, Hydraulic Turbine components (including Intake Side, Runner Hub, and Main Shaft), and various mechanical assemblies like Guide Bearing Housing, Packing Box, and Unwatering Valve.

The technical drawings, created by the baldwin-Lima-Hamilton Corporation, provide precise dimensional details, material specifications (primarily ASTM A516 and stainless steel), and assembly instructions for critical hydroelectric infrastructure components. The documents include multiple view perspectives (plan, section, elevation), detailed notes on fabrication requirements, welding specifications, surface treatments, and assembly tolerances. Each drawing includes revision history, approval signatures, and specific engineering identifiers, indicating a comprehensive engineering design process for hydroelectric power generation equipment.