Firestone Fabricators, 2308 Orange Ave, Signal Hill, CA 90755, US

Established in 1979, D.J. Scheffler is a drilling contractor that specializes in foundation drilling and earth shoring services. Its foundation drilling services are operated by drilled, continuous flight auger, and mini and micro piles. Its earth shoring systems include cantilever, internally braced, secant pile wall, soil nail, and soldier pile and tieback shoring systems. The company undertakes various environmental projects that include ground freezing, soil sampling, pieziometer installation, pressure grouting, bentonite slurry walls and methane well installation. It also offers services in landslide and basement projects. The company uses a range of equipment that includes drill rigs, cranes, loaders, backhoes and trucks. Located in Pomona, Calif., D.J. Scheffler provides services in Nevada, Oregon, Washington and Colorado. It is a member of the Deep Foundations Institute and the International Association of Foundation Drilling.