First Defense

Designed with site flexibility in mind, the First Defense^® stormwater separator provides versatile capture of sediments, trash and floatables that allows engineers to maximize available site space without compromising stormwater treatment level.

First Defense^® is available in different configurations to comply with stormwater regulations defined by various jurisdictions.

Targeted Pollutants

• Coarse particles
• Fine particles
• Trash (screened version for full trash capture now available)
• Floatables

Approvals, Verifications and Certifications

• New Jersey Corporation for Advanced Technology (NJCAT) – First Defense Optimum
• New Jersey Department of Environmental Protection (NJDEP) – First Defense Optimum
• New Jersey Corporation for Advanced Technology (NJCAT) – First Defense High Capacity
• New Jersey Department of Environmental Protection (NJDEP) – First Defense High Capacity 
• ISO 14034 verification for Canadian OGS
• City of Indianapolis – First Defense High Capacity
• City of Indianapolis – First Defense Optimum
• Virginia Department of Ecology BMP Clearinghouse
• Ohio Department of Transportation 
• Virginia Department of Transportation
• California Water Boards Full Trash Capture

Applications

The First Defense^® reliably treats runoff from impermeable surfaces across a broad range of catchments.

First Defense also operates successfully as part of a management train alongside other proprietary or natural drainage features, for example as treatment before infiltration.

• As part of LID or LEED and Sustainable Drainage Systems (SuDS)
• Stormwater treatment at the point of entry into the drainage line
• Sites constrained by space, topography or drainage profiles with limited slope and depth of cover
• Retrofit installations where stormwater treatment is placed on or tied into an existing storm drain system
• Pretreatment for filters, infiltration and storage

Measurement System:

Downloads

PDF: Brochure