SERVICES We specialize in septic systems and provides all types of WDEQ approved tanks and distribution systems. Learn More ABOUT US We are a Certified Septic System Installer (CIOWTS-A) NEHA. Learn More NORMINGTON EXCAVATION Serving Southwest Wyoming since 2001. Serving Southwestern Wyoming for over 19 years. Read more. See photos from recent projects. Visit our Services Page and see what Normington Excavation can do for you. We provide free written quotes. Give us a call today.