Terra Petra is an environmental engineering firm that specializes in contaminated soil and groundwater conditions. Our expertise starts with soil gas characterization, remediation and in the design and inspection of gas mitigation systems for buildings of all types - including commercial, multiple family, single family, industrial, institutional and retail. We are methane experts and methane gas specialists. Our services include: Methane, Brownfield, Vapor Intrusion, Landfill, Oil Field, Site Closure, Geology/Hydrogeology and Radon. We also offer full service Waterproofing consulting and services through through our sister-company, Building Waterproofing Experts. We make it our business to understand every specific challenge from the very beginning of every project to ensure that we engineer sustainable systems for our clients. We understand construction processes which in turn allows us to design the most cost-effective systems for any building and budget. We are now serve clients nationwide.