02/13/2018 (2) - Laserfiche WebLink

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SCOPE -OF -WORK Task 1 - Site Visit ESA staff will prepare for and attend a site visit with County staff and Mosquito Control staff to the Lost Tree Islands project site. ESA will document site conditions, including water levels, sediment types, vegetative cover, submerged aquatic vegetation (SAV) and oysters. ESA will bring underwater camera and other instruments to conduct preliminary assessments of the area. This task will include two (z) ESA staff and it is anticipated County Staff or Mosquito Control will provide boats to access the island. ESA has an 18 foot skiff that can be authorized by the County on a contingency basis for a fee of $25o per day. Anticipated need would only be one day of boat usage. Deliverables: Copies of field notes will be provided. Task z — Data Collection ESA staff will continue to work with the County to acquire historical data including topographic & bathymetric survey data (or LiDAR), water quality data, aerials, oyster and seagrass maps. In the absence of historical data and the need for recent, site specific data; ESA proposes to collect water quality data at points around the project area for depth, dissolved oxygen (DO), salinity, temperature, and Chlorophyll. This information will help to characterize the site and determine which type of restoration project will be the most successful. This work can be repeated on a quarterly or event basis by ESA or by the County to determine seasonal variability in the water quality. Pending the site visit in Task 1, this task may be revised to select the best collection points and water quality sampling parameters for the site. In order to determine if the finger canals should be reconnected ESA staff will examine the existing subsurface conditions in the immediate area of potential reconnection sites. Sediment samples will be collected both upland and in -water and photographed. These samples will undergo visual analysis only, and will not be logged. Laboratory testing for mechanical or chemical properties of the sediment would occur in future phases of the project if warranted. SAV and oyster reconnaissance surveys will be conducted on a presence/absence basis, since the work will not be during the seagrass growing season. Limits closest to proposed work may be recorded for preliminary design purposes only. SAV and oyster densities and mapping will be conducted in future phases if necessary for permitting. ESA will use their boat to access the islands for data collection and field work in this task, County staff are welcome to join/assist-in data collection efforts if timing allows. ESA estimates two field days to collect the necessary data. Deliverables: Project database files and figures (Excel, GIS, PDF) will be provided to the County Task 3 — Planning Meeting At the conclusion of Task i, ESA Staff will chair a project planning meeting with County staff (Coastal, Natural Resources & Parks) along with other stakeholders (Mosquito Control) to discuss project feasibility, determine project stages, funding streams and schedules. The meeting will focus on the timing of proposed project elements including reconnection of the 173