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February 22,2012 <br /> - "-Hom Page 7 of 15 <br /> and Associates,Inc. <br /> County will provide the corresponding survey data so that it can be updated to <br /> include the proposed monitoring wells. A Professional Land Surveyor licensed in <br /> the State of Florida will survey the northing and easting coordinates and top of <br /> casing elevations of each of the proposed monitoring wells. Additionally, the <br /> coordinates and elevation of the canal benchmark will be surveyed. The survey <br /> data will be combined with the existing site survey. The top of casing elevation <br /> data will be used to establish the localized direction of ground water flow at each <br /> grove area. <br /> Task 4—Site Assessment Report Addendum <br /> Following the completion of Tasks 1 through 3, KHA will prepare a Site <br /> Assessment Report Addendum (SARA) for the Site. The SARA will document the <br /> methodologies and results of the forgoing site assessment activities. Additionally, <br /> KHA will respond to the relevant comments in the FDEP's July 14, 2011 <br /> correspondence. In doing so,KHA will assume that the data previously collected <br /> by GEC is correct and accurate. However, KHA will not certify the data and <br /> interpretation prepared by other. <br /> ' KHA will calculate alternative soil cleanup target levels(SCTL)for the Northeast <br /> Grove area based on the site assessment data previously collected by GEC. The <br /> alternative SCTLs will be based on the assumption that the area will be used for <br /> conservation purposes thereby limiting human exposure. KHA will calculate the <br /> alternative SCTLs for arsenic based on various exposure scenarios that are <br /> amenable to Indian River County with the understanding that the property will <br /> ultimately be placed under a deed restriction limiting is use. <br /> The SARA will include the following: <br /> • A written summary of the methodologies employed for the additional <br /> sampling activities undertaken by KHA. <br /> • A narrative of the corresponding results of the additional assessment <br /> activities. <br /> • A written summary of the derivation of the alternative SCTL for arsenic <br /> in the Northeast Grove.This includes a summary of the exposure scenario <br /> assumptions and copies of the corresponding calculations. <br /> • A written interpretation of the ground water quality data. <br /> • Copies of the slug test data and hydraulic conductivity calculations, <br /> including the raw field data in electronic format. <br /> • Tabulated summaries of the ground water quality data. <br /> 1... <br /> 48 <br />