Clear Water’s core design and treatment stems from active treatment systems utilizing Chitosan Enhanced Sand Filtration (CESF). This core technology for removing high concentrations of suspended solids, hydrocarbons, and heavy metals from stormwater has been incorporated at a number of facilities and frequently proves to be the best solution for the project site upon further evaluation of water quality characterization and long term operational practices. Clear Water’s systems are designed to meet the specific needs of each individual site with a suite of failsafe options to maximize efficient stormwater treatment, and minimize system bypass events.
CESF water treatment technology utilizes chitosan acetate, a natural biopolymer, to remove suspended sediment from water. Clear Water was instrumental in the development of CESF technology, and received General Use Level Designation (GULD) from Ecology to utilize the technology on Construction and Industrial sites throughout Washington in 2007. By removing suspended sediment, associated total metals, hydrocarbons and organic pollutants are also reduced. CESF systems can easily be augmented with enhanced pretreatment chemistry and/or adsorptive media filtration to reduce the most common stormwater contaminants to non-detect at microgram per liter (µg/L) detection levels. Other active treatment technologies provided by Clear Water include: Mobile Treatment Unit and M Series.
- Water Treatment Plans
- Treatability Tests and Design
- NPDES Permitting
- Stormwater Pollution Prevention Plan Assistance
- Sanitary Sewer Permitting
- Onsite Monitoring and Record-keeping
- Ecology DMR Reporting
- King County SMR Reporting