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LIST OF FIGURES <br />Figure <br />Title <br />Page <br />8-16 <br />Diagram of the Amphidrome process and installation of the Amphidrome <br />8-30 <br />at the Massachusetts Alternative Septic System Test Center <br />9-1 <br />A surface flow wetland for stormwater runoff treatment in an urban area. <br />9-2 <br />Note walkway and signs located around facility to educate community <br />about non -point source pollution and treatment system <br />9-2 <br />Onsite treatment of septic tank effluent in a subsurface flow constructed <br />9-4 <br />wetland <br />9-3 <br />Ecological wastewater treatment systems contained in greenhouse <br />9-6 <br />structures and treating domestic wastewater <br />9-4 <br />Diagram of an ET system for wastewater evaporation <br />9-8 <br />9-5 <br />A stabilization pond treating wastewater from a cannery operation <br />9-10 <br />10-1 <br />Device for contacting chlorine tablets with treated wastewater <br />10-2 <br />10-2 <br />A sand filter pump control and alarm system and ultraviolet disinfection <br />10-6 <br />system (steel cylinder to the right of the control box) used to treat sand <br />filter effluent before landscape irrigation <br />11-1 <br />Diagram of a typical at -grade distribution system <br />11-2 <br />11-2 <br />Diagrams of typical below -grade soil adsorption systems typical trench <br />11-4 <br />system and shallow gravelless distribution system and a shallow <br />gravelless distribution system with half pipe section removed <br />11-3 <br />Diagram of a bottomless trickling biofilter system utilizing peat biofilter <br />11-5 <br />modules <br />11-4 <br />Diagram of a mound system for wastewater treatment and dispersal <br />11-7 <br />11-5 <br />The complete NoMound system before the final soil cover is applied <br />11-8 <br />11-6 <br />A spray irrigation system installed at a home, systems can also be <br />11-10 <br />installed with low trajectory spray nozzles installed at ground level <br />11-7 <br />Pop-up style spray irrigation emitters for wastewater <br />11-10 <br />11-8 <br />The AQUA DRIP Wastewater Effluent Management System <br />11-12 <br />11-9 <br />A cross-section of the Biol-ine drip line showing the pressure <br />11-12 <br />compensating emitter <br />11-10 <br />A typical side trench shown during installation of a drip irrigation system <br />11-12 <br />11-11 <br />The Perc-rite system for drip irrigation of septic tank effluent <br />11-13 <br />11-12 <br />Diagram showing effects of Treflan herbicide on root growth around drip <br />11-13 <br />emitters <br />11-13 <br />Three types of gravelless soil adsorption systems <br />11-14 <br />11-14 <br />Installation of the Biodiffuser chamber system <br />11-15 <br />11-15 <br />Several models of Cultec chambers <br />11-15 <br />11-16 <br />The Presby Enviro-Septic and Simple -Septic <br />11-15 <br />11-17 <br />Drainage and infiltration products from Hancor <br />11-15 <br />11-18 <br />Installation of an EZFIow drainage system <br />11-16 <br />11-19 <br />Goldline drainage pipe used for gravelless wastewater infiltration systems <br />11-16 <br />11-20 <br />The In -Drains system for the treatment and infiltration of wastewater <br />11-16 <br />11-21 <br />Installation of Infiltrator chamber systems <br />11-17 <br />11-22 <br />The Bull Run Valve for flow control in distribution systems <br />11-18 <br />r FA <br />