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EVERETT PUBLIC WORKS DEPARTMENT  SMITH ISLAND ESTUARY RESTORATION YEARS 5 & 6 MONITORING <br /> <br />create a figure illustrating the sample plot locations. NSD will present the appropriate figures within <br />the Task 5, Year 5 Monitoring Report, using the NSD drone aerial imagery collected as part of Task 2, <br />Vegetation Monitoring to illustrate the water surface elevation gage locations, the salinity sampling <br />locations, the wetland determination data plots, and the extent of estuarine habitat. <br /> <br />Task 1 Deliverables: <br /> Year 5 hydroperiod graph, included within Task 5, Year 5 Monitoring Report <br /> Year 5 salinity data, included within Task 5, Year 5 Monitoring Report <br /> Year 5 estuarine extent figure and associated wetland determination data (Appendix to Task <br />5, Year 5 Monitoring Report) <br />Task 1 Assumptions: <br /> Site conditions are such that the hydroperiod field work can be accomplished within two site <br />visits by two NSD staff – gage installation and gage retrieval. Approximately 8 hours for gage <br />deployment and 8 hours for retrieval site visit by two NSD staff is estimated, including travel. <br />o Gages will function as intended over their month deployment; vandalism or loss <br />of gage will require replacement and reinstallation through Additional <br />Unanticipated Services task budget. <br /> Site conditions are such that the salinity monitoring field work can be accomplished within <br />one approximately 8 hour site visit, including travel, by two NSD staff. <br /> Site conditions are such that the wetland delineation data collection field work can be <br />accomplished within one approximately 8 hour site visit, including travel, by two NSD <br />wetland biologists. <br /> Survey will use GPS RTK, no total station work will be required. <br /> <br />Task 2: Wetland Vegetation Development Monitoring <br />Per Tables 6-1 through 6-3 of the Advance Mitigation Plan, wetland vegetation development <br />monitoring is required in Year 5 to quantitatively evaluate tidal marsh development, habitat <br />complexity and interspersion, vegetation cover, and control of reed canarygrass, invasive species, <br />and noxious weeds within the mitigation site. <br />Data Collection <br />NSD will visit the project site in ~August/early September of 2023 to complete the Year 5 vegetation <br />monitoring. NSD will assess the general condition of the site, collect photos from the photo point <br />locations utilized in Years 1 through 4, and conduct vegetation monitoring in accordance with the <br />Advance Mitigation Plan (ICF 2016) and consistent with the methods NSD used for Year 3 monitoring. <br />NSD biologists will record species composition and percent cover of all identifiable species in <br />approximately 130 vegetation sample plots (each 1 square meter in size) located along 13 transects, <br />oriented north to south across the topographic gradient of the site. The location of the first sample <br />plot on each transect is determined using a random distance between zero and 50 feet from the <br />northern boundary of the AMS. Thereafter, sample plots are positioned at 75-foot intervals to the <br />south. NSD will employ GPS to navigate the transects and to the location of each sample plot and will <br />DocuSign Envelope ID: B75A46E0-B4A7-4C6C-B91E-69B691B92514