This materials recovery facility in Santa Rosa, California, encompasses 4.5 exposed acres. The site entered ERA level 2 for a one-year reporting period for TSS, aluminum, and iron, and entered ERA level 1 the following year for COD. Clear Water assisted the facility with retrofitting their existing stormwater treatment system to include a 4-pod sand filter, GAC media vessels, settling tanks for retention time, chemical dosing equipment, and an advanced control unit for automation capabilities. Since the retrofit, the site has reduced all pollutant loads below NAL values, achieving baseline status for all pollutants.

The upgraded system has treated and discharged more than 21 million gallons of stormwater since the upgrades.

Treating water at MRF sites offers challenges in filtering out trash captured by incoming stormwater, which can clog pumps and disrupt treatment. Clear Water worked with the client to reduce incoming trash and debris and utilized pumps capable of cutting through debris to help keep systems operational under adverse conditions.