• Dr. Harkins is a registered Professional Engineer in the States of Texas and Oklahoma.
• HEI is registered with the State of Texas Board of Professional Engineers.
• HEI is registered with the Oklahoma State Board of Licensure for Professional Engineers and Land Surveyors.

HEI certifications:

• City of Austin, Disadvantaged Business Enterprise
• South Central Texas Certification Agency, Emerging Small Business Enterprise, Small Business Enterprise, and a Woman-Owned Business Enterprise
• State of Texas, Historically Underutilized Business
• U.S. Business Administration, Small Woman-Owned Business