CAS Consulting & Services, Inc.

Company Information

CAS was founded in 1999 by Channy Soeur to provide civil engineering services throughout the Austin area. Today, our company has expanded across Texas and the US to include offices in San Antonio, Houston, Dallas, Corpus Christi, Atlanta and most recently, San Francisco. We specialize in providing the following consulting services for our clients: 

  • Program Management
  • Construction Management
  • Water and Wastewater Engineering
  • Stormwater Engineering
  • Environmental Engineering 
  • Transportation Engineering

Our Services

For over 17 years, CAS has been involved in the rehabilitation, expansion, and development of water and wastewater systems, watershed management, and transportation systems for major cities throughout the state of Texas. We provide comprehensive planning, design, and program and construction management services for water treatment plants, waste water treatment plants, distribution and collection systems, pump stations and lift stations, site development, flood plain mitigation, erosion control, water quality protection, local roads, city streets, highways, bridges, tunnels, and rail and mass transit systems. 

Our Philosophy

Our company’s basic philosophy is to provide professional technical services in a manner which exceeds our customers' expectations. The major strength of CAS lies in the technical expertise of its management and professional staff.  The CAS team emphasizes commitment to quality service, responsiveness and technical excellence for every project. CAS offers customized client services to solve project challenges efficiently and within allocated resources.

Our Focus

CAS' focus is the public sector market including municipalities, state and federal agencies as well as some public-private partnerships. We have worked as a prime engineering firm numerous City of Austin projects including the Austin Clean Water Program, South IH-35 Program, Jollyville Water Transmission Main, Waller Creek Tunnel, and Williamson Creek Tunnel. Other organizations that we have worked for include the Travis County, Capital Metropolitan Transit Authority, Texas Turnpike Authority, Lower Colorado River Authority, Bexar County, City of San Antonio, San Antonio Water System, San Antonio River Authority, Tarrant Regional Water District, Dallas Water Utility, City of Houston, City of Atlanta, as well as the federal government.  


  • Henry Leighton named a 2015 ASCE Texas Professional Service Award Recipient
  • Henry Leighton named American Society of Civil Engineers (Austin Chapter) Civil Engineer of the Year for 2013
  • 2011 HUB Business of the Year by COMTO (Conference of Minority Transportation Officials)
  • 2011 Small Business of the Year (Greater Dallas Asian American Chamber of Commerce)
  • 2010 Small Business of the Year (City of Austin Department of Small & Minority Business Resources)
  • 2009 Spirit of Texas Award Nominee from the State of Texas Governor Rick Perry
  • Austin Clean Water Program was recognized by the International Right of Way Association (IRWA) as one of the Top 10 North American infrastructure projects of the past 75 years.
  • 2008 Outstanding Small Business Excellence Award from the Network of Asian American Organizations
  • Mabel Davis Park Landfill Remediation project received the Texas Council of Engineering Companies 2007 Engineering Excellence Awards Silver Medal for outstanding contribution in the environmental category