U L T R A – D R A I N G U A R D S 

Effectiveness Study*

• 10-30 lbs. of sediment is typically captured.

• More than 30% of material is less than 100 microns in size (toxics and heavy metals are typically associated with these smaller particles).

• About 50% of incoming free oil is captured.

• Filters last up to 12 months.

• Effective at capturing oil, grease, trash and sediment. 

 
* Based on a year-long independent study, funded by the National Fish and Wildlife Foundation.  Examined 165 filter on 30 sites.