Returning to Baseline from Level 2, The Wholistic Approach
Reduction of pollutants in stormwater runoff is most effective when the discharger's strategy is to combine individual elements and practices into an overall strategy to achieve reductions. A comprehensive approach to best management practices (BMPs) includes elements such as proper handling and management of all potential pollutant sources, stormwater awareness and training, evaluations and improvements to stormwater infrastructure, selection of appropriate treatment controls, and choosing the most representative Qualifying Storm Event (QSE) for sample collection.
In Reporting Year 2017-2018 Lawrence Berkeley National Laboratory's (Berkeley Lab) stormwater discharge average concentrations for aluminum and iron were significantly reduced to below Numeric Action Levels (NALs) resulting in the return to Baseline from Level 2 status for these parameters.
The purpose of the power point presentation is to share Berkeley Lab's effective strategy with stormwater practitioners and professionals including the California State Water Resources Control Board (SWRCB), the California Stormwater Quality Association (CASQA), and permitted dischargers regulated by the Construction General Permit (CGP) and the Industrial General Permit (IGP).
A twenty minute power point presentation will provide descriptions of each of Berkeley Lab's individual best practices that contributed to the overall successful strategy. Examples include:
Eliminating pollutant sources by adding storm resistant covers on bins;
Increasing the frequency of good housekeeping and maintenance operations;
Installing structural controls including asphaltic berms, check dams, and reconfiguring stormwater collection infrastructure;
Installing passive filtration treatment controls at the ground surface and in drain inlets;
Increasing storm event awareness / readiness for imminent storms via an email distribution list; and
Selecting the best Qualifying Storm Event (QSE) for obtaining representative stormwater samples.
The audience will identify with the means and methods described in the presentation and relate to how these concepts may be implemented or adopted to improve their stormwater management program or site conditions. After the 20 minute oral presentation, the presenter will address questions and comments from the audience in the remaining 10 minutes of the allocated 30 minutes of the presentation.
The presentation is consistent with this year's "Connecting the Drops" theme as a wholistic approach of "Connecting the Contributing Factors", that when combined result in a successful strategy of improvements to stormwater quality.
Mr. Brendan J. Mulholland,PG,QSD,QISP is an environmental and stormwater consultant with 26 years experience.
He is currently the Stormwater Program Manager at Lawrence Berkeley National Laboratory.