Scalable Active and Passive Treatment Solutions to Address TMDLs

Date / Time:
Tuesday, Sep 15 4:00pm to 4:30pm
Track / Session:
Track: Industrial / Session 4

Water quality limits and benchmarks are constantly changing and Total Maximum Daily Load (TMDL) requirements are placing an even higher standard of care (and associated risk) on industrial permittees. Stormwater is dynamic by nature however the solutions often available are static and not engineered to be flexible or adapt to changing influent conditions; often resulting in non-compliance, sunk costs in failed BMPs and frustrated stormwater managers, owners and regulators.

This presentation will focus on how both passive and active BMPs can be evaluated along with existing stormwater infrastructure to phase in treatment solutions in an adaptive manner that consistently utilizes treatment components that can be scaled to the next phase of treatment should it become necessary to meet water quality targets, including TMDL associated limits. The presentation will cover case studies that began utilizing passive treatment approaches within the existing infrastructure, how performance of those BMPs were utilized in the design of the next phase and how costs were mitigated in each situation by either incorporating existing equipment into a more advanced solution or limited changes to site conveyance infrastructure. The case studies with cover sites from Washington, Oregon and California, each w/ TMDL considerations and provide a brief summary of the similarities and differences with each industrial general permit.

Primary Speaker:
Nathan Holloway, Clear Water Services, LLC
Nathan Holloway has been active in the water quality industry for over 18 years and is proud to have worked his way up from an entry level technician to a leadership role as the President of Clear Water Services. Nate studied Oceanography and Environmental Science/Policy at the University of Washington and worked his way through school in both the restaurant and construction industries where he learned to balance customer service with a practical solutions-oriented work ethic. Nate and his team are well regarded for their ability to provide cost effective stormwater treatment solutions; ranging from high-flow active treatment systems to enhanced low impact development features, and the ability to form working relationships with key project stakeholders resulting in a high level of client satisfaction and regulatory approval.