ELS Collection

NPDES multi-sector permit requires collection of storm water runoff to be
collected within the first thirty minutes of flow.  The Environmental Liquid
Sampler (ELS) was developed to collect the "true" first sample of liquid that
arrives at the appointed sampling location, then seals itself off to preserve the
sample integrity.

The ELS is a mechanically automated device that is able to be used in remote
locations without the use of a power source.  This eliminates the requirement to
personally respond to a storm event immediately, allowing retrieval at a
convenient time.

Versatile in many applications including rivers, streams, storm sewers, drainage
ditches collecting runoff from industrial, agriculture and landfills.  ELS is easily
installed in any channel or sump setting taking and holding sample integrity.