Schumitt Established 1964 CONSTRUCTION CO. INC. Over 50 years in Business Dave Schmitt Construction Company has been a cutting edge provider of excavating, grading, sewer and site preparation services across Eastern lowa since 1964. Along with excavating we also specialize in the installation of underground utilities such as water main, sanitary sewer, storm sewer, sub-drain piping, hydro-excavating, and directional boring. Congratulations to our friends at CRBT on the opening of the Marion branch! We cannot say enough great things and are honored to be a partner in business with you! Schumitt Established 1964 CONSTRUCTION CO . INC . Over 50 years in Business Dave Schmitt Construction Company has been a cutting edge provider of excavating , grading , sewer and site preparation services across Eastern lowa since 1964 . Along with excavating we also specialize in the installation of underground utilities such as water main , sanitary sewer , storm sewer , sub - drain piping , hydro - excavating , and directional boring . Congratulations to our friends at CRBT on the opening of the Marion branch ! We cannot say enough great things and are honored to be a partner in business with you !