In this episode, host Timm Morrison — aka Sweeper Man — sits down with Mikel Wilkins, Senior Engineer, San Antonio River Authority, and Gregory L. McPartlin, Principal Consultant, Urban Quarries.
Register for Sweeper Summit 2026 at sweepersummit.com.
Mikel Wilkins — Senior Engineer, San Antonio River Authority
Mikel Wilkins is a Senior Engineer at San Antonio River Authority where he leads a team of engineers, planners, and landscape designers in the development of nature-based solutions master plans for major watersheds of the SA River basin.
Mr. Wilkins is a professional environmental engineer with 30 years of experience focusing on planning and design of nature-based solutions, parks, and trails throughout the United States. He has also worked as an adjunct professor at Southern Methodist University within the Masters of Sustainable Design program teaching sustainability frameworks including SITES and Envision since 2018.
LinkedIn: linkedin.com/in/mikelwilkins · Website: sariverauthority.org
Gregory L. McPartlin — Principal Consultant, Urban Quarries
Gregory L. McPartlin has more than 25 years of experience working in the water, environmental technology, and stormwater sectors. He is a consultant with Progressive Sweeping Contractors, Principle Consultant for Urban Quarries, and a member of the Clean Streets = Cleaner Waterss steering committee.
His work focuses on bringing together contractors, municipalities, regulators, manufacturers, and stormwater leaders to advance street sweeping as a measurable water-quality and MS4 compliance tool.
LinkedIn: linkedin.com/in/gregory-l-mcpartlin · Website: urbanquarriesus.com
Hear this conversation continue in San Antonio
Greg McPartlin and the Clean Streets = Cleaner Waterss team lead the stormwater program at Sweeper Summit 2026, November 3–4 at La Cantera. Municipal and public-agency rates start at $195.
See municipal pricingWatch the full episode above, then bring the conversation to San Antonio — Sweeper Summit 2026 runs November 3–4 at La Cantera Resort.

