About Us

Four Corners Environmental, Inc. is certified as a Woman Business Enterprise (WBE) and Woman-Owned Small Business (WOSB) by the National Women Business Owners Corporation (NWBOC), the nation’s first, third-party certifier of businesses owned and operated by women. Four Corners Environmental, Inc. was established in 1993 with Corporate Headquarters in Flagstaff, Arizona and a Regional Office in the Phoenix area.

Company Overview

Four Corners specializes in environmental management and consulting, and also provides remedial abatement contracting.

Our professionals are recognized throughout the southwest for providing specialized environmental consulting services to industrial, commercial, and municipal clients for nearly every aspect of environmental management.

Four Corners’ professionals maintain professional licenses for asbestos and environmental management, hydrogeologic and engineering geology services and general construction activities in Arizona, Alaska, Nevada, New Mexico, California, Colorado, Wyoming, Utah, and Oregon.

Our professional personnel have over two decades of experience with environmental regulatory program management, regional solid and hazardous waste facility management and design, groundwater resource development and protection programs, regulatory compliance services and construction administration programs. Four Corners’ consulting experience includes investigation, permit and report preparation, regulatory liaison services, construction management, and expert witness services for the following regulatory programs:

  • National Environmental Policy Act (NEPA)
  • Occupational Safety and Health Act (OSHA)
  • Resource Conservation and Recovery Act (RCRA)
  • Clean Air Act (CAA)
  • Clean Water Act (CWA)
  • Safe Drinking Water Act (SDWA)
  • Comprehensive Environmental Response, Compensation and Liability Act (CERCLA)
  • Superfund Amendment and Reauthorization Act (SARA)
  • Pollution Prevention Act
  • Toxic Substances Control Act (TSCA)
  • Emergency Planning and Community Right-to-Know Act

Our understanding of the complex regulatory arena and our diverse project backgrounds provide flexibility and correlation between multidisciplinary compliance requirements and technical programs.

Principal Personnel

Rhonda Brose

Rhonda A. Brose

Chief Executive Officer/Environmental Consultant/Principal

Richard Brose

Richard J. Brose

Principal and Chief Financial Officer

Have questions about how we can help? We’d be glad to talk!