Mr. Erickson has over 10 years of environmental project experience, with particular emphasis in engineering design of landfill gas (LFG) systems, construction quality assurance (CQA) monitoring, and landfill closure projects. His general civil design project experience includes design of regulatory prescribed landfill covers and liner systems, and LFG system design and equipment selection for over 20 sites in California. As part of this work, Mr. Erickson has determined earthwork volume estimates; final grading and drainage configuration; and LFG system design, including blower/flare system (BFS) component sizing, well placement, and affiliated gas pipe sizing for projects in excess of $50 million. In addition to design work, Mr. Erickson has provided CQA monitoring for final closure and LFG system projects throughout California and Mexico, and siting activities for new landfill construction in Brazil. CQA monitoring experience included documentation and inspection of construction activities; certifying work was performed per project drawings and specifications, and correspondence with clients and construction groups. Over the last several years, Mr. Erickson has provided senior oversight of CQA staff for various projects. He has also conducted construction progress meetings and provided design modifications to final grading, drainage facilities, and LFG systems during project construction.