Laserfiche WebLink
2. Ecology requires that the Filterra Shallow provide a contact time equivalent to that of the <br />standard unit. This means that with a smaller depth of media, the surface area must increase. <br />3. To select a Filterra' Shallow System unit, the designer must first identify the size of the <br />standard unit using the modeling guidance described above. <br />4. Once you establish the size of the standard Filterrd" unit using the sizing technique described <br />above, use information from the following table to select the appropriate size Filterra�!` <br />Shallow System unit. <br />Shallow Unit Basic, Enhanced, and Oil Treatment Sizing <br />Standard Depth Eauivalent Shallow Depth I <br />Notes: <br />1. Shallow Depth Boxes are less than the standard depth of 3.5 feet but no less <br />than 3.0 feet deep (TC to INV). <br />Applicant: <br />Applicant's Address: <br />Application Documents: <br />Filterra® Bioretention Systems, division of Contech <br />Engineered Solutions, LLC. <br />11815 NE Glenn Widing Drive <br />Portland, OR 97220 <br />• State of Washington Department of Ecology Application for Conditional Use <br />Designation, Americast (September 2006) <br />• Quality Assurance Project Plan Filterra® Bioretention Filtration System Performance <br />Monitoring, Americast (April 2008) <br />• Quality Assurance Project Plan Addendum Filterra® Bioretention Filtration System <br />Performance Monitoring, Americast (June 2008) <br />• Draft Technical Evaluation Report Filterra® Bioretention Filtration System Performance <br />Monitoring, Americast (August 2009) <br />• Final Technical Evaluation Report Filterra° Bioretention Filtration System Performance <br />Monitoring, Americast (December 2009) <br />• Technical Evaluation Report Appendices Filterra® Bioretention Filtration System <br />Performance Monitoring, Americast, August 2009 <br />• Memorandum to Department of Ecology Dated October 9, 2009 from Americast, Inc. and <br />Herrera Environmental Consultants <br />0 <br />