2009/12/23 Council Agenda Packet

ii "7 changes in number of native and invasive species. Changes in relative cover of the plant communities will be discussed in the vegetation section of the Year 3 Monitoring report(Task 8). Task 1.4 Aerial Photo Coordination and Interpretation As required in the mitigation plan, an aerial photograph of the entire site is to be flown each year of monitoring.ICF Jones&Stokes will contact a local aerial photographer to take a photograph directly overhead of the site from a low flying airplane. ICF Jones&Stokes will schedule the pictures to be taken during appropriate low tide conditions during late July or early August 2010 in advance of the vegetation sampling if possible.The photographer will provide hard copy and a digital file to ICF Jones&Stokes. ICF Jones&Stokes will utilize the aerial photo,coupled with the vegetation monitoring,to map the relative extent and locations of the vegetation communities characterized during year 3(2010) monitoring across the EPWD mitigation site and will summarize that information for inclusion in the Year 3 Monitoring Report(Task 8). Task 2. Hydrology Monitoring Year 3 ICF Jones&Stokes will conduct three low tide site visits to record water levels at the staff gauges installed during the Year 1 monitoring to document hydrologic conditions relative to tidal cycle and inundation in 2010. We will also rent,construct housings for, install, and collect the data from 6 continuously recording water level gauges(In-Situ LT 500 units,or similar) installed within the site(5 gauges) and in Union Slough near the north breach (1 gauge)for at least one month (anticipated to be —June 2010,depending on construction related to bridge removal, as described in Part 2 of this Scope of Work), to compare with data collected during year 2 (2009)pre-bridge removal conditions. This data will be analyzed and compared to the year 2 data and reported in the hydrology section of the Year 3 Monitoring report.(Task 8). Task 3. Water Quality Monitoring Year 3 ICF Jones&Stokes will utilize a canoe and a GPS unit loaded with the UTM coordinates to relocate the same six water quality stations within the site and the one station located in Union Slough utilized during the years 1 and 2 monitoring. As during years 1 and 2 monitoring, we will collect the samples at high tide twice during spring high river flow periods(i.e.April to May, depending on rainfall and runoff conditions) and twice during summer low river flow periods(i.e.August to September, depending on conditions),with samples collected approximately 2 weeks apart. Water temperature,salinity, and dissolved oxygen will be measured at three depths(approximately 1, 3, and 5 feet below the water surface)during high tide using a YSI hand- held meter,or equivalent. Year 3 Monitoring Smith Island Restoration 3 December 7,2009 38