Sweet gums are so called because they exude a fragrant yellow resinous gum.. The tree is known by a wide variety of names, among them alligator-tree and alligator wood (probably a reference to the warty knobs on the tree's bark), incense tree and liquidambar.
What is asbestos? Asbestos is the name given to a group of naturally occurring fibrous minerals that are resistant to heat and corrosion. Because of these properties, asbestos has been used in commercial products such as insulation and fireproofing materials, automotive brakes, and wallboard materials.
Naturally-occurring asbestos, often found in serpentine rock formations, is present in several foothill areas of Placer County. When naturally-occurring asbestos-containing material is disturbed asbestos fibers may be released and become airborne, thereby creating a potential health hazard.