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Indian River Countv Sector 3 - Beach Restoration Project Additional Services Scope of Work vertical ledge, one quadrat will be located along the vertical/subvertical face, a second quadrat will be located at the top of the ledge along at the horizontal face of the ledge, and the third quadrat shall be placed at the 5-meter mark along the transect. Additional quadrat sampling shall occur along each transect to capture changes in benthic landscape (physical relief, species dominance/abundance, presence of stony corals/octocorals along or immediate adjacent to the transect). If the transect crosses a sand gap (i. e. trough), a quadrat shall be sampled at the seaward edge of the exposed hardbottom, and at the west edge of hardbottom east of the sand gap (Le. on the horizontal face of the crest of the next ledge) . The distance across the sand gap shall be noted and is included within the 180- meter length of the transect. Quadrats shall not be placed in the sand gaps between hardbottom ridges . Each 180-meter transect shall have approximately 12 quadrats within the first 120 meters of the transect. A list of the locations of the quadrats along each transect with a description of the quadrat location/benthic community shall be provided to the Department after transect establishment. Within each quadrat, visual estimate of percent cover and genus/species identification shall be performed in-situ for the following functional groups: • macroalgae (overall percent cover and identification/percent cover of two dominant species within quadrat) , • microalgae/cyanobacteria, • encrusting calcareous algae, sponges (genus level) , with a separate assessment of percent cover of boring sponge (Cliona spp), ■ tunicates (with identification of dominant genera), • zoanthids (genus level), hydroids, • worrmock (Phragmatopoma lapidosa), • octocorals (genus level), and • scleractinian corals (species level). Individual counts shall be conducted for all octocorals, scleractinian corals, sponges (not including Cliona spp . which shall be assessed for percent cover) , solitary tunicates, urchins , and holothuroids within the quadrat. Scleractinian corals and octocorals shall also be assessed for size class distribution: size class 1 : < 5 cm diameter of scleractinian/height of octocoral ; size class 2 : 5 cm to 15 cm diameter of scleractinian/height of octocoral; size class 3 : 15 to 25 cm diameter of scleractinian/height of octocoral; and size class 4 : >25 cm diameter of scleractinian/height of octocoral). Maximum and average algal height of the two dominant macroalgal species shall also be recorded. Average algal height shall be estimated by five measurements . Percent cover of substrate, unconsolidated substrate (rubble, shell hash, rhodoliths), sand and sediment over hardbottom shall be recorded. The maximum physical relief of hardbottom from the lowest point to highest point in the quadrat, shall be measured to the nearest centimeter. Sediment accumulation measurements will be performed within all quadrats located on the flat (horizontal) surface of hardbottom along each transect. Five random Page 7 of 14 June 13, 2007