Charlie has been in the civil engineering/construction industry for 15 years. He worked as a consultant for a geotechnical/environmental firm in his early years, before moving into contracting. The most recent experience was project manager/estimator for DeWind One-Pass Trenching for the past 7 years. Management and estimating duties have been performed on a diverse range of projects from small environmental projects to large civil soil mixing projects. Well versed with mixed-in-place cutoff walls, PRBs and collection trenches. Active affiliations include Seepage Control Technical Committee member of Deep Foundations Institute (DFI).