Semmel Excavating LLC. has been serving the Lehigh Valley since 1945 making us one of the oldest, most experienced excavating and sitework contractors in the Lehigh Valley. For over half a century, we have been providing our customers with a complete line of site preparation services for a wide variety of construction applications. Semmel Excavating is PennDOT prequalified and our experience covers road construction, utility installation, commercial & industrial site preparation work, sinkhole remediation, parking lot construction, and erection of retaining walls.