RFT 2022-17 General Waste Cell & Monocell Design Construction Level 1 Supervision & EPA Approval

Summary and scope

Engage an Independent Engineer suitably qualified and experienced in landfill construction verification. They will be responsible for overseeing implementation of the Construction Quality Assurance (CQA) aspects of the works and must be experienced in: • Design and CQA inspection of earthworks and geosynthetic lining (and reinforcing) systems. • CQA inspection of all aspects of the geosynthetic lining system construction on a full-time basis. • Compile the As-constructed Report and provide verification of the works against the requirements of the Technical Specification. Other responsibilities of the CQA Engineer will be: • To review and verify the submittals, materials and Contractor CQA processes nominated in the Specification. • To review all earthworks testing and reporting provided by the GTA and GITA and survey and undertake inspections necessary to monitor the works and for the release of Hold Points. • The geosynthetic reinforcement and lining system CQA involvement will include review of materials manufacturer quality assurance (MQA) and independent quality assurance (IQA) information required by this Specification and liner system installation inspection and reporting on a full-time basis. Engage an independent Geotechnical Testing Authority (GTA) to provide inspection and testing services for the subgrade. Engage an independent Geotechnical Inspection and Testing Authority (GITA) to provide full time inspection and testing of engineered fill layer earthworks at Level 1 responsibility. Engage an experienced independent Geomembrane Testing Authority (GMTA) to conduct geomembrane integrity surveys. The as-constructed report and verification of the works are to be submitted to the EPA to gain final approval and sign off of the new constructed cells. All costs associated with these works are to be allowed for including: • Travel, accommodation and associated costs • Attendance at onsite meetings as required