Common violations include unpermitted construction, grading, and lack of property maintenance. Other issues involve unlicensed business and similar regulated activities, interference with utilities and public lands, and substandard residential, commercial, or nuisance properties. More serious matters relate to fire concerns such as brush clearance, smoke detection and fire prevention as well as environmental issues such as water quality, streambed alteration, illegal dumping, substandard health conditions, and other hazardous circumstances that threaten life and/or property.