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SCOPE OF WORK Indian River County Beach Preservation Project - Sectors 1 & 2 Post-Construction Monitoring Services Introduction: The Indian River County Sectors 1 & 2 Beach Renourishment project is located along the shoreline south of Sebastian Inlet, at Sebastian Inlet State Park and unincorporated Ambersand Beach and extends between FDEP reference monuments R-3 . 5 and R-17 . Renourishment of the project will occur within the 06-07 dredging season . This scope of services details pre- and post construction biological monitoring tasks required under state and federal permit for this project. Task 1 - Nearshore Hardbottom Monitoring Plan The objectives of the nearshore hardbottom monitoring program are to describe the abundance and biodiversity of the benthic flora and fauna within the influence of the predicted equilibrium toe of fill (ETOF), turbidity mixing zone, and downdrift of the project fill area; evaluate the extent of the ETOF as compared to the predicted ETOF, assess the potential burial of hardbottom due to beach profile adjustment; assess secondary impacts to hardbottom communities due to sedimentation seaward of the ETOF; assess secondary impacts to hardbottom communities due to the longshore spreading of beach fill material downdrift of the project area; and to assess the potential direct impacts to nearshore hardbottom communities due to pipeline placement. Permanent CrossShore Transects: Video and Stili Photographic Documentation Five, 150-meter long transects shall be located within the project area : R-5, R-6. 5 , R-8, R-9. 5 , and R-10.5 . One transect shall be located downdrift of the project area at R-12, and two reference transects shall be established: one at R-19 . 5 and one at R-22 . The transects shall be permanently established using pins or rods to mark each 0 point at the landward edge of exposed nearshore hardbottom . If a ledge exists at the nearshore hardbottom edge, the 0 point shall be located on the top (i .e. crest) of the nearshore hardbottom ledge on the horizontal surface . Pins will then be installed along all transects at the 5-meter mark, 10-meter mark, and every 10 meters until 100 meters, with an additional pin installed at 125 meters and one at 150 meters. The pins shall extend a minimum of 30 cm above the hardbottom surface. No pins shall be located within the sand gaps between hardbottom ridges. If significant sand gaps (i.e. troughs) occur between the hardbottom ridges, a pin shall be placed at the seaward edge of the first hardbottom ridge, and installation of pins will recommence at the next hardbottom ridge with a pin at the 0 mark (crest or edge of exposed hardbottom) . Pin installation will then continue at 5 meters from the second 0 mark, and then every 10 meters until the 100 meter mark, with additional pins at 125 meters and 150 meters. DGPS positioning will be obtained for the landward edge (0 mark) and seaward edge of the first nearshore hardbottom ridge, and for all subsequent hardbottom ridges located seaward along the 150- meter transect. C:Wm=erm and 8e ngsNonaUwQlLocW 3ehirgff mp ry \Memel Files10LK2ao2 sow FMAL. o 1 J