Chapter 6: Local Road Construction Management 187 3.5. Contract Close-Out Report The Contract Close-Out Report is also known as the Project Completion Report or the Terminal Report. At the end of the project, all significant reports that have been issued during the design and construction phases should be summarized and documented in a final Project History Report. Cost accounting should be prepared with the final resolution of all expenditures. These reports should officially note the dates of substantial completion and commencement of warranties. 4. Quality Assurance (QA) and Quality Control (QC) This section describes the construction quality assurance procedures to be followed to ensure that the construction works is executed in accordance with the approved engineering design and specifications. The execution of this quality assurance plan shall be supervised by a qualified Materials Engineer (RE) who shall be duly accredited by DPWH and shall act as the designated QA officer. 4.1 Definitions of Terms for QA/QC The terms Quality Assurance (QA) and Quality Control (QC) are much confused and are often interchanged and used as if they are the same. The following definitions of Quality Assurance and Quality Control are taken from ISO 8402 which is an International Standard Referencing Quality Vocabulary. The following are the recommended definitions for QA/QC: a. Quality. The distinguishing characteristics of a product or service that bear on its ability to satisfy stated or implied needs. In a contractual environment, needs are specified; these needs are stated in the technical specifications of the works and is part of the contract documents. This technical specification would be the contractor’s guidelines to follow in the execution of the work to ensure that at the end of the project, the works constructed is in accordance with the quality that is being required by the project owner;