Chapter 6: Local Road Construction Management 188 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 signiifcant reports that have been issued during the design and construction phases should be summarized and documented in a ifnal Project History Report. Cost accounting should be prepared with the ifnal resolution of all expenditures. These reports should oiffcially 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 speciifcations. The execution of this quality assurance plan shall be supervised by a qualiifed Materials Engineer (RE) who shall be duly accredited by DPWH and shall act as the designated QA oiffcer. 4.1 Deifnitions 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 deifnitions of Quality Assurance and Quality Control are taken from ISO 8402 which is an International Standard Referencing Quality Vocabulary. The following are the recommended deifnitions 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 speciifed; these needs are stated in the technical speciifcations of the works and is part of the contract documents. This technical speciifcation 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;