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<br />P:\Projects\0106.071 2025 Resident\J-REPORTS\VLF2 P3 Stage B.1 <br />RoC Page 15 <br />3.3.3. Geomembrane Resin QC Certificates <br />AGRU America manufactured the geomembrane for the VLF2 Phase 3 Stage B.1 by using <br />LLDPE polymer raw material (resin). Chevron Phillips Chemical Company provided resin <br />QC certificates at a rate of one per rail car shipment. The resin QC certificates were <br />reviewed by the CQA Monitor, ensuring all materials met or exceeded the Technical <br />Specification requirements. The resin QC certificates for all 80-mil geomembrane used <br />within the Phase 3 Stage B.1 area are provided in Appendix H.4. <br />3.3.4. Geomembrane Welding Rod QC Certificates <br />AGRU America manufactured the extrusion welding rod for VLF2 Phase 3 Stage B.1 from <br />various resin lots. The CQA Monitor reviewed and verified that all welding rod QC <br />certificates that were provided by Chevron Phillips Chemical Company met the <br />requirements defined in Technical Specifications and was manufactured using the same <br />type of resin. The welding rod QC certificates are presented in Appendix H.5. <br />3.4. Geomembrane Construction Quality Assurance <br />CQA performed on installed LLDPE geomembrane consisted of visual observations of panel <br />deployment, double-wedge fusion seaming, extrusion seaming, extrusion welded repairs, non- <br />destructive testing, and destructive testing. Fusion welded seams were non-destructively tested <br />for continuity using pressure testing methods. Extrusion welds were non-destructively tested <br />using vacuum testing methods. Fusion and extrusion welding methods were also tested <br />destructively. All field sampling and testing was performed by EC Applications and observed by <br />the CQA Monitor. Visual observations of field seams and panels were routinely made to inspect <br />the seam for squeeze-out, melt, over-grind, and overlap. Defects and/or failed seams were <br />marked and repaired in accordance with the specified repair procedures. <br />Welding machines were continually inspected for proper operation, settings and condition by <br />performing trial welds prior to actual geomembrane installation. Logs of the trial welds, panels, <br />seams, continuity testing, repairs, and destructive testing were maintained by both the <br />contractor and the CQA Monitor on a daily basis. The CQA Monitor’s geomembrane installation <br />logs are presented in Appendix I. <br />Geomembrane installation for the VLF2 Phase 3 Stage B.1 project was performed in accordance <br />with design drawings and project specifications. Record of Construction Drawing Number 3 <br />shows panel locations, seams, and destructive test locations. <br />3.4.1. Geomembrane Third Party Conformance Testing <br />The third-party conformance test samples for the 80-mil geomembrane was obtained at <br />a rate of one test for every 150,000 square feet, and at least one test for each resin lot, <br />resulting in a total of 15 tests for 80-mil LLDPE. Samples were tested by TRI in Anaheim, <br />CA. All conformance test results were reviewed by a NewFields representative and met