Dr. Sigrida ReinisDr. Sigrida Reinis is an Associate with Langan Engineering and Environmental Services, and lives and works in Oakland, California. She holds Bachelor of Science, Masters of Engineering, and Doctoral degrees, in Civil Engineering, from the University of California at Berkeley. Sigrida is a Professional Engineer in the States of California and North Dakota, and a licensed General Engineering Contractor in California. With over 20 years of design and construction oversight experience, Sigrida is the technical leader of the gas and vapor intrusion mitigation and monitoring practice for Langan in California. In addition, Sigrida leads the probabilistic cost estimating and decision analysis practice for Langan nationwide. She also has prepared and provided peer reviews of the full spectrum of technical documents related to the remediation of redevelopment of brownfield sites and municipal solid waste landfills. Additionally, she has provided litigation support and expert witness services for both construction and environmental engineering projects.