Ragan-Smith researched historical usages to identify hazardous building materials and underground storage tanks on several historical filling station sites. Ragan-Smith identified the extent of pollutant contamination via soil bores and monitoring wells. Afterwards, Ragan-Smith estimated cost and time for final cleanup and site closure. Ragan-Smith located contractors to completely demolish sites and obtain final closure. Ragan-Smith provided land planning and design services for commercial sites.