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Stormwater Treatment

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Cor designs site-specific stormwater treatment systems. Cor uses the latest treatment technologies and works with each client’s budget, pollutants of concern, and site constraints to find the best possible solution. Cor is intimately familiar with Oregon and Washington’s corrective action process, and has successfully guided projects from conceptual design, to regulatory approval; from permitting to final design and construction.


Contact Cor to discuss your site’s treatment needs.

  • Treatment System Cost Evaluation

  • Treatment System Design

  • Level 3 Corrective Action Report

  • Tier II Corrective Action Report

  • Construction Drawings

  •  Permit Drawings/Documents

  •  Construction Oversight

  •  Infiltration Facility Design

  • Passive Treatment/Active Treatment


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