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Construction Quality Assurance(CQA) Plan Extension of Closure Cap Corral Hollow Sanitary Landfill August 21, 2008 2.5 Construction Monitoring 2.5.1 Monitoring Priorities Before commencement of construction, the CQA Manager will establish a list of monitoring priorities. The list shall include the various construction activities and the monitoring priority of those activities. The monitoring priorities may change during construction, based upon Contractor performance and owner request. Changes in the monitoring priorities must be approved by the CQA Manager, 2.5.2 Discrepancies All CQA testing must be conducted in accordance with this CQA Plan, the document that requires the most. frequent tests or has more stringent test requirements will govern, unless otherwise specified by the CQA Manager. 2.6 Materials Quality Verification 2.6.1 General Material sources will be identified and samples tested to determine if the material meets project specifications for specific work elements. Definitions and requirements of materials are provided in the technical specifications. Test samples will be obtained in accordance with applicable ASTM and/or industry standards. Archive samples and test results of the test samples will be maintained and stored at the project. site. The CQA Monitors will establish and maintain a materials quality verification list. The list will include material sources, sample locations, testing requirements, test results, and verification action items. 2.6.2 Material Submittals Material submittals may be used by the CQA organization to establish the acceptability of materials. When sample submittals are required, they will be made available to the CQA organization by the Contractor. Acceptance and proper review of submittals are the responsibility of the CQA Manager. Vector Engineering, Inc. •143E Spring Hill Drive -Grass Valley, CA • (530) 272-2448 -13-