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South Relief Canal Algal Turf Scrubber® Pilot Program While certain planning decisions and cost estimates can be made through modeling and desktop assessments for water treatment technologies , there are certain limitations on the level of accuracy and degree of certainty that can be provided through these types of assessments . Field demonstrations or pilot studies allow the Engineer and Operator to evaluate the performance of proposed treatment systems under site-specific conditions . Data gathered from pilot studies are introduced into the planning and design process so that appropriate , defendable design refinements can be made . The result is better design of a more efficient system ; more reliable cost estimates ; and an enhanced understanding of the process dynamics . A pilot scale investigation of the Algal Turf Scrubber® (ATSTM ) is recommended to simulate the ATSTM treatment process specific to the water quality conditions associated with South Canal water blended with the Reverse Osmosis Concentrate . The results will be used to ( i ) verify periphyton growth and water treatment performance developed through initial projections and ( ii ) optimize the design and operational strategy of a proposed full -scale Algal Turf Scrubber® Water Pollution Control Facility . The pilot unit shall be a standard 1 foot wide aluminum floway as provided by HydroMentia as a Mobile Pilot Unit or MPU ( see schematic as Figure 2 ) . A typical MPU installation (as installed in the Everglades for the South Florida Water Management District) is shown as Illustration 3 . The proposed length is 500 feet . On possible location for the South Relief Canal pilot scale ATSTM just east of the intersections of Old Dixie Highway , 1 " Place , and the South Relief Canal , with the headworks of the pilot unit to be near the coordinates 27 ° 36 ' 14 . 22 " N and 80 ' 23 ' 11 . 84 "W. A schematic plan view overlain upon a Google Earth view of the proposed site is shown as Illustration 4 . It may be necessary to move the site to the west to accommodate more efficient access to electrical power and to canal water which has not been pre-mixed with RO concentrate . In addition , the RO Concentrate storage units as noted may not be needed if the system is cited close enough to the existing RO Concentrate line that a direct tap could be facilitated . Typical Elevation and Section schematics are shown in Figure 3 and 4 . The exact layout and facilities location will be developed in the field in coordination with the IRFWCD . The facility is to be operated for a 6- month period . Influent water shall be a blend of water from the South Relief Canal and the RO Concentrate generated by the Utilities Department of Indian River County . The blend will be such that it is emulative of the expected mix when the two waters are introduced through discharge of the concentrate into the canal . This blend is expected to be from 6 : 1 to 10 : 1 Canal Water to Concentrate . The South Relief Canal ATSTM Pilot Facility shall include the following components . The MPU consists of an aluminum ATSTM floway with support structure , self- siphoning surger , effluent box , 40 mil EPDM base , and a geotextile grid • The MPU floways shall be installed at a design slope of 0 . 5 % . The floway Plan of Study 6