TreePro's Safety Management staff takes care of all the underground utilities before grinding the stumps, so that your gas lines, electrical lines, etc should not get damaged. With our expert staff we serve most of the sonoma county area including Santa Rosa, Rohnert Park, Cloverdale, Cotati, Sebastopol, Windsor and Healdsburg. http://www.treeprosonoma.com/index.php/services/stump-grinding