Excavation contractors in Rock County, WI

Wisconsin is glacial ground in every direction: till plains across the south and center, the kettle-moraine outwash belt, and dolomite ridges along the Lake Michigan shore. Digging is moderately easy: silt loam and loam till trenched with a standard backhoe, but the outwash corridors (the Fox Valley, the kettle moraine, the central sands) put clean sand and gravel in the subsoil that cuts fast and stands poorly, making shoring a standard bid item. Dolomite and Silurian limestone run shallow along the Door peninsula and the lake shore: bedrock within 50 inches on 20-60 percent of the lakeshore counties (Door, Kewaunee, Manitowoc, Sheboygan, Ozaukee), so rock excavation shows up in utility and foundation work. Hydric soils are moderate (18 percent average) with wet pockets along the Glacial Lake Wisconsin basin and the lowlands of the central sands, and shrink-swell is low (1 percent). Frost depth is 42 inches. Septic systems are conventional on most lots, with mound designs common in the sandy central counties where percolation runs too fast.