Storm Water

Storm water analysis.
Storm Water summary

Specialty Analytical has developed extensive experience in analysis of storm water samples for both the Oregon and Washington State programs.

The States of Oregon and Washington regulate storm water outflow from industrial facilities by issuing general permits (NPDES) for discharge of storm water from any point source to surface water or to conveyance systems that discharge to surface water. This applies to storm water runoff from land and impervious areas such as paved streets, parking lots and building rooftops.

The following is a list of Oregon and Washington permit requirements.

Oregon General Permit Requirements


Sampling: Permit holders are required to sample four (4) times per year beginning July 1st. Two samples must be taken between July 1st and December 31st and two more samples must be taken between January 1st and June 30th. The samples must be taken at least 14 days apart.

1200 COLS

Sampling: Sampling requirements are the same as those for Permit 1200Z.