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<br />P:\Projects\0106.069 CC&V 2024 CQA\J-REPORTS\2024 Phase 3B Subgrade and Leak Detection ROC Report <br /> Page 8 <br />3. QUALITY ASSURANCE/QUALITY CONTROL <br />CQA activities were performed by the CQA Monitor for all shifts during the 2024 <br />construction of the VLF2 Phase 3 Stage B project. CQA activities performed included monitoring <br />aspects of construction, inspection and approval of project components, laboratory and field <br />testing of soils, documentation of construction and CQA activities. <br />Weekly construction progress reports were generated and submitted to CC&V and the Engineer <br />of Record (EOR) and are presented in Appendix E. The CQA Monitor captured photographs of <br />construction activities during the VLF2 Phase 3 Stage B Subgrade and Leak Detection <br />construction. Photographs of key construction elements are presented in Appendix F. All testing <br />was performed in accordance with the Technical Specifications and are presented in Appendix G <br />and Appendix I. <br />3.1. Testing Standards <br />The CQA Monitor sampled earthwork construction materials during the construction. The <br />materials were tested at a soils laboratory to verify that all earthwork construction materials met <br />the project technical specifications. Geomembrane and geotextile samples were sent to a third- <br />party laboratory to verify that the material properties met the project technical specifications. <br />All testing was performed in accordance with these American Society of Testing and Materials <br />(ASTM) standards. <br />3.1.1. Earthworks Testing Standards <br /> Particle size analysis (ASTM D6913) <br /> Atterberg limits (ASTM D 4318) <br /> Soil Classification (ASTM D2488) <br />3.1.2. Geomembrane Testing Standards <br /> Thickness (ASTM D 5199/D 5994) <br /> Density (ASTM D 1505, Method B) <br /> Carbon Black Content (ASTM D 4218) <br /> Carbon Black Dispersion (ASTM D 5596) <br /> Tensile Properties (ASTM D 6693) <br /> Ultimate Elongation (ASTM D6693) <br /> Puncture Strength (ASTM D 4833) <br />3.1.3. Geotextile Testing Standards <br /> Mass per Unit Area (ASTM D5261) <br /> Puncture Resistance (ASTM D6241) <br /> Apparent Opening Size (ASTM D4751)