Andrea Collier

Andrea Collier

Andrea has 20 years of experience with stormwater systems, permitting, and pollution control, as well as water and wastewater infrastructure and planning. Her areas of expertise include NPDES permitting, wastewater collection and treatment systems, industrial and municipal stormwater, and water quality science. Her 15 years in project management and leadership roles include working with manufacturing companies, utilities, regulatory agencies, and other public entities. Andrea has participated as a lead auditor and subject matter expert for numerous NPDES audits at manufacturing sites throughout the U.S.



Senior Environmental Engineer


Professional Engineer (MO)


Barr Engineering Co.
1001 Diamond Ridge
Suite 1100
Jefferson City, MO 65109
Phone: +1 573-638-6013