4-Unconditional_Waiver_and_Release_(Upon_Progress_Payment).pdf

This is an Unconditional Waiver and Release form associated with the Wm. S. Hart Union High School District's Hazardous Waste Removal Services project in California. The document establishes the terms under which contractors and subcontractors release all lien rights upon receipt of progress payments. The waiver applies to parties who have furnished labor, materials, equipment, or services for the hazardous waste removal work and accept progress payment as consideration for relinquishing their right to file a mechanic's lien or other claim against the project.

The unconditional waiver is a standard contract requirement that contractors and subcontractors must execute to receive interim payments throughout the project duration. By signing the document, the releasing party acknowledges receipt of payment for work completed through a specified payment period and unconditionally waives any claim or lien rights for that portion of work. This mechanism protects the owner and prime contractor from duplicate claims while ensuring payment flow to subcontractors and material suppliers. The waiver must be submitted prior to or concurrent with each progress payment request to maintain compliance with the contract payment schedule.