Catch basin inserts are very effective and work well in many applications.
In known "hot spot" drains, however, something with more filtering capability may be necessary. Because these drains are more likely to encounter more concentrated contamination in stormwater, dedicated filter media can help in reducing pollutants.
The Ultra-HydroKleen is considered a "true filter" by the EPA and forces water through up to three different filters before it exits into the stormwater system.
Advanced catch basin filter captures multiple pollutants
Removes hydrocarbons, heavy metals, sediments and other organics from stormwater and industrial runoff.
Exceeds 80% sediment removal efficiency. Patented filtration system allows different filter media to be used together to remove targeted pollutants.
Choose a mix of filters to removes hydrocarbons / oil, chemicals, odor, phosphorus and heavy metals from water flow (must be ordered separately).
A by-pass system prevents flooding or ponding during high-flow storm events.
Excellent post-construction control for drains that are more susceptible to large concentrations of contaminants ("Hot Spots").
Units available for round or square catch basin grates. Custom sizes available.

SAMPLING OPTION
Convenient and effective means to obtain samples of the post-treatment effluent from the Ultra-HydroKleen to comply with monitoring and testing requirements.
Sampling Option provides standard HydroKleen with modifications to allow the Ultra-Universal Sampler (sold separately) to pull "post-treatment" water samples from below the unit's filters.
Take real-time samples during storm events.
Access area stays closed until a sample is desired.
Simple sampling - No need to remove the Ultra-HydroKleen to take a sample (in many cases, even the grate can remain in place). Simply slide open the sampling port and insert the Universal Sampler.

Compliance:
Helps comply with NPDES, 40 CFR 122.26 (1999) and TMDL requirements.
Considered a "true filter" and has been verified by the EPA's ETV program.