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06/16/2020
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06/16/2020
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8/19/2020 2:03:55 PM
Creation date
8/12/2020 12:14:47 PM
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Meetings
Meeting Type
BCC Regular Meeting
Document Type
Agenda Packet
Meeting Date
06/16/2020
Meeting Body
Board of County Commissioners
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Studies within the County focus on biosolids related to Blue Cypress Lake, and not on implications to the <br />Lagoon. The nutrient cycling, particularly of nitrogen, make it difficult to have a complete understanding <br />of how biosolids impact groundwater, which may also provide a source for eutrophication of the Lagoon. <br />While this moratorium addresses Class B biosolids, Class A and Class AA have been exempted from <br />regulations due to their fertilizer status. Once classified as fertilizer, Class AA biosolids are no longer <br />accurately tracked by any regulatory agency, nor restricted for use on only permitted lands, therefore <br />there is a large gap in knowledge about the impact Class AA biosolids are having on the environment as a <br />whole. As a point of clarification, there are no Class A biosolids producers within the State since the level <br />of additional processing to turn that into Class AA is minimal, and the removal of restrictions on placement <br />of Class AA makes the additional steps worthwhile for many producers. Class AA biosolids can also be <br />found in fertilizers sold at local home goods stores. <br />The state created a technical advisory committee for biosolids in order to address some of the state- <br />wide issues with nutrient pollution. Their goals were to modify the permitting process to minimize <br />impacts to waterbodies, increase frequency of inspections, develop site specific groundwater monitoring <br />protocols, conduct more field research, and promote pilot projects that address alternative uses to <br />biosolids. The state created a draft rule, which the County weighed -in heavily throughout the process. <br />Revisions to the draft rule have been made, but a final ruling has not been established as of present. Pilot <br />projects are currently being investigated on the feasibility of using biosolids to produce electricity, reuse <br />water, and phosphate ash among other things. Utility Departments have expressed concerns about the <br />cost and reliability of such innovative technologies since they are currently not shown to scale up to the <br />sizes' needed to address the volumes of biosolids being generated. It is important to encourage studies <br />on alternative ways to use biosolids, since biosolid tonnage is continually produced and landfills do not <br />have unlimited storage capacities. <br />4. Ecosystem Functions and Habitat Use (Part 1) <br />The Environmental Protection Agency classifies the Lagoon as one of 28 estuaries in the nation <br />designated as an "Estuary of National Significance," which sets the foundation to create a place -based <br />program to protect and restore the water quality and ecological integrity of that estuary. Studies have <br />shown that the Lagoon is used at some point throughout their life cycles by approximately 4,000 unique <br />organisms, making it a biologically diverse ecosystem. Some utilize the Lagoon for their entire life while <br />others for only a portion; both of which are equally important to our estuary. This update will focus on <br />seagrasses, filter feeders, and finfish within the County's portion of the Lagoon. <br />Seagrass mapping has and continues to occur throughout the Lagoon. SJRWMD maps seagrass <br />every 2 to 3 years, starting in 1986, along with coverage from 1943. This data, when compared over time, <br />allows us to understand the trends in local seagrass populations and distribution. Based on this data from <br />SJRWMD, seagrass beds within the County appear to be doing better when compared to seagrasses as a <br />whole for the Lagoon. Within the Northern Indian River Lagoon seagrass map data, where the County <br />falls, seagrass loss was observed from 2009-2011, decreased in 2012, increased between 2013-2015, and <br />again decreased in 2016 and in 2017. Estimates of mean percent coverage within the footprint of seagrass <br />beds have decreased since 2001. From 2011 to present, the loss of coverage appears to be related to <br />decreases in light transmissivity filtering through the water column possibly due to prolonged algae <br />95 <br />
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