This document provides detailed terms and conditions for a construction project. It covers various aspects such as mark-up on materials and equipment, work procedures and mobilization, surveying and inspection requirements, safety regulations, coordination with the County and subcontractors, and material specifications. Additionally, the document specifies that valves used in the project must have all the necessary safety features mandated by OSHA. It also emphasizes the importance of ensuring the safety of buried and exposed materials. The document further mentions that the County may choose to supply materials and highlights the Contractor's responsibility for safeguarding their own materials, tools, and equipment. Overall, the document provides comprehensive guidelines and expectations for the construction project, including specific requirements for valves and safety measures for materials.