June 30, 2022
About Eric Sonsthagen is a Senior Project Engineer with Blackstone Environmental. Since joining the team in 2022, Eric has provided solid waste/environmental engineering to Blackstone’s growing client base. He works in the Omaha, Nebraska office and has experience in permitting, design, and construction oversight of landfill cell construction, landfill closures, and landfill gas extraction systems. Eric enjoys jigsaw puzzles and spending time with his family. Education B.S. Chemical Engineer (Environmental Option), University of Wyoming, 1999 Registrations & Certifications Professional Engineer - IA, NE, WA40-Hour HAZWOPERExcavation and Trenching Competent PersonCPN Nuclear Density Gauge CertificationCertified CQA Geosynthetic Materials and Compacted Clay Liner Inspector Expertise Calculating landfill gas emissions, greenhouse gas (GHG) emissions, and estimatingrecoverable landfill gas. Permitting experience includes performing landfilllocational analysis, solid waste permit and renewal applications, Title V permit andrenewal applications, minor and major permit modifications, notice ofconstruction applications, New Source Performance Standard (NSPS) reporting,emission inventories, compliance evaluations, and regulatory assistance. Closure and post-closure and financial assurance cost estimating. Organizations Member, American Institute of Chemical…
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