Environmental  - Remediation - Construction Support

MBE - WBE- DBE Certified

Wiley Robb & Associates, LLC (Wiley Robb) is a certified minority- and woman-owned disadvantaged business enterprise (MBE/WBE/DBE) and full-service environmental consulting firm headquartered in St. Louis, Missouri. The company is a Limited Liability Corporation (LLC) partnership and has participated with and/or completed several projects in the St. Louis Metropolitan and surrounding areas. Wiley Robb offers environmental testing and inspection services to commercial, industrial, governmental, institutional, and residential clients. The firm is owned and operated by two principals: Ms. Tristen A. Wiley, CHMM and Ms. Jacqueline R. Robb, CHMM who bring combined over 65 years of environmental and construction project expertise to the company.


The company has been in business since April 2019, is 100% woman-owned and 51% minority-owned. Ms. Wiley is the President of Wiley Robb and 51% owner. Ms. Robb is the Vice President of the company and owns 49%. Ms. Wiley and Ms. Robb are both full time employees of the company and oversee their management and staff level employees.

Our staff brings real estate transaction, construction support, and environmental inspection and testing project experience from sites across Missouri as well as Illinois, Arkansas, Kansas, Iowa, Indiana, Ohio, Tennessee, Louisiana, Florida, Maryland, Washington D.C., Pennsylvania, Michigan, Colorado, Texas, Utah, and Oregon with clientele from the private, public, residential, commercial, governmental, institutional, energy and industrial sectors.


Our highly experienced and knowledgeable staff is capable and available to quickly respond to local area sites or travel nationwide.  We have the ability and resources to quickly acclimate to local, regional, or state regulations as required for a specific project and to acquire the necessary tools and equipment to meet client goals. Our staff is 40-hour OSHA HAZWOPER trained and have applicable  Missouri and/or Illinois State Certifications. 

Wiley Robb’s philosophy is to work together to preserve and protect our natural resources; to seek out mutually beneficial collaborations and partnerships; to encourage and support children, women, and minorities in science, technology, engineering and mathematics; and to contribute to the restoration of balance and order of the environment for the next generation.