Let's Rethink Reality

Collaborative | Creative | Comprehensive


For 50 years, RETTEW has been solving problems, innovating solutions, and bringing client dreams to life. Over these last five decades we’ve grown from a small, local firm into a vibrant organization with hundreds of employees and national reach. We’ve continually expanded our expertise and tackled demanding projects of all sizes in a broad range of markets. We’ve watched our communities grow, and we’ve watched our own families grow. We’ve seen our industry evolve, and we evolved with it. In fact, a lot has changed since 1969, but we’re still guided by our traditional values and a strong commitment to relationships, quality, safety, and client delight.

RETTEW: A Legacy of 50 Years

  • Manufacturing Video Contest for PA Students

    May 07, 2019

    Another school year, another fun contest! RETTEW was proud to again sponsor the “What’s So Cool about Manufacturing?” contest, concluding with its 2019 Best of PA Championship last week. Developed by the Manufacturers Resource Center, the video-based competition is designed to increase awareness of career paths in manufacturing and STEM for students. The Pennsylvania championship…

  • RETTEW Welcomes Daniel Simpson

    April 29, 2019

      RETTEW recently hired Daniel Simpson as a Project Manager in our Denver, Colorado office. A Registered Environmental Manager, Daniel has more than 15 years’ experience managing compliance on projects in many industries, including aerospace, energy, industrial, commercial, and municipal. He has an extensive background in both sales and regulatory compliance with government agencies, and…

  • Searching for Historic Graves

    April 18, 2019

    In Swatara Township, unmarked gravesites and burials from generations ago were lost, but not forgotten. RETTEW partnered with the Friends of Midland Cemetery, a nonprofit with volunteers who maintain the site, to uncover those historic graves. Officially founded in 1795, but used many years earlier, Midland Cemetery is the burial site for many slaves, black…