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Eric Charest February 28, 2019 Page 2 of 4 SCOPE OF WORK Tetra Tech is proposing the following tasks to assist Indian River County with meeting their TMDL and BMAP allocations. Task 1. Coordination Meetings IRCDUS staff have had preliminary discussions with DEP staff about aggregating the point source facility allocations into one permit. Based on initial feedback from DEP staff, it seems that if some of the waterbodies are reclassified from "streams" that must meet Class III water quality standards to "canals" that have less stringent water quality requirements, it may be easier for DEP to approve an aggregate permit. The West Regional WWTF discharges through the following canals: Lateral D Canal, Lateral C Canal, and Main Canal: The South County RO Concentrate Discharge, Facility discharges through the following canals: Sub -Lateral J-1 Canal, Lateral J Canal, and South Relief Canal. The. first step in this process will be to hold a meeting(s) with DEP assessment and BMAP -staff to .discuss in detail IRCDUS'request to aggregate the point source NPDES facility allocations and determine the.path forward — reclassifying all or some of the canals named above and then aggregating the point source NPDES facility allocations or only aggregating the allocations. Tetra Tech will. coordinate with IRCDUS and DEP staff to set up the meetings) and will attend the, meeting(s) in-person with DEP. Tetra Tech will prepare a summary froin each meeting to have. a record of the discussion. This task would include up to two meetings with DEP. If, through coordination with DEP; it is determined that all or some of the canals listed above need to be reclassified, coordination meeting(s) will be needed with the Indian River Farms Water Control District (IRFWCD) since -these canals are owned by the district. Tetra Tech will coordinate with IRCDUS, IRFWCD staff, and the district's engineers to set up a meeting(s) to discuss the reclassification. Tetra Tech will prepare a meeting summary from each meeting to have a record of the discussion. This would include up to two meetings with IRFWCD, and Tetra Tech will attend one meeting in-person. Task 2. Waterbody Reclassification This task would be completed only if DEP requires that some or all the canals named above be reclassified to provide an aggregate allocation for the NPDES facilities permits. These waterbodies can be reclassified as canals if information is provided to demonstratethat they meet the following requirements: • Be man-made; or predominantly channelized or predominantly physically altered; • Be primarily used for water management purposes, such as flood protection, stormwater management, irrigation, or water supply; and • Have marginal or poor stream habitat or habitat components, such as a lack of habitat or substrate that is biologically limited, because the conveyance has cross sections that are predominantly trapezoidal, has armored banks, or is maintained primarily forwater conveyance.