SP-43 A Guide to Swelling Soils for Colorado Homebuyers and Homeowners Details Order SP-43 on our Amazon storefront. Swelling soil, a geologic hazard, is a common and sometimes serious problem in Colorado that is capable of causing severe damage to houses. The damage may occur slowly over time, and houses in a neighborhood may be affected at different times. Written to assist homeowners in reducing damage caused by swelling soils, this important publication covers the latest information on geology, construction, landscaping, and home maintenance. It satisfies part of the disclosure requirements of the State of Colorado for new houses built on swelling soil, as well as to inform homeowners on strategies for the long-term care of their homes. It also includes info on homeowner risk, a property check-list, and a list of reading and information resources. 76 pages. 45 figures. Update: The Association of American State Geologists announced that their annual John C. Frye Memorial Award for 1998 is granted to the CGS and the staff members who authored SP-43. Citations Noe, David C., Candace L. Jochim, and William P. Rogers. SP-43 A Guide to Swelling Soil for Colorado Homebuyers and Homeowners. 2nd ed. Special Publications, SP-43. Denver, CO: Colorado Geological Survey, Division of Minerals and Geology, Department of Natural Resources, 2007.