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Resources

Chemical Source

  • Sound Environmental Concepts

Federal Regulations and Permits

  • Summary of the Clean Water Act
  • Endangered Species Act | Overview
  • National Pollutant Discharge Elimination System

Washington State Stormwater Info and Permits

  • Stormwater & Runoff
  • Industrial Stormwater General Permit
  • Construction Stormwater General Permit
  • Water quality permit database - PARIS
  • Emerging stormwater treatment technologies (TAPE)
  • Certified Erosion and Sediment Control Lead Database
  • Certified Operator List

Guides on Water Quality Sampling

  • Stormwater Monitoring
  • How To Do Stormwater Monitoring
  • How to Meet Ecology’s Construction Stormwater General Permit Requirements

Oregon State Stormwater Info and Permits

  • Industrial Stormwater Permits
  • Construction Stormwater Permits
  • Division 41: Water Quality Standards

California State Stormwater Info and Permits

  • Industrial Stormwater Program
  • Construction Stormwater Program
  • BMP Handbooks
Sound Transit Eastlink E335 - Washington Stormwater
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What is Chitosan Enhanced Sand Filtration?

For 15 years, our Chitosan Enhanced Sand Filtration (CESF) units have been the most cost-effective, and environmentally friendly solution to your turbid water concerns. Our self-contained units can be installed anywhere, even on construction sites with limited space. They filter turbid water from soil disturbance, contamination from previous developments, and treatment of PH from concrete handling on-site.

Our filtration units take dirty water from construction and industrial sites and filters out these contaminants quickly and more effectively than other filtration mediums.

Choosing CESF units on your site is a smart choice:

  • Lower project costs
  • Improve site conditions for contractors
  • Increase wastewater tank capacity
  • Work for all soil types
  • Install easily in areas with limited space
  • Environmentally friendly
  • Comply with current EPA and WSDOE BMP regulations
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