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AH 'b@ <br />Applied Hydrogeologic Solutions LLC <br />August 8, 2018 <br />Mr. Chris Bowley <br />Communications Development Director <br />City of Casselberry <br />95 Triplet Lake Drive <br />Casselberry, FL 32707 <br />RE: Proposal to Conduct One (1) Quarterly Groundwater Sampling Event and <br />Conduct Closure Activities for the City of Casselberry City Center Site (Former <br />Shell Station) <br />FDEP Facility ID 59/8516519 <br />Change Order #6 <br />Dear Mr. Bowley <br />This letter and the accompanying revised cost proposal are in response to the Florida <br />Department of Environmental Protection (FDEP) review of the May 2018 Quarterly <br />Groundwater Monitoring Report for the subject facility, dated July 6, 2018, and in <br />response to recent discussions with Chris Bowley, the new Communications <br />Development Director. As summarized in the review letter, which is attached, FDEP is <br />requiring two (2) additional quarterly sampling events before they can consider the site <br />for a Low Score Site Initiative (LSSI) conditional NFA. However, they are willing to <br />reduce the number of wells requiring analytical testing from five (5) to just two (2), and <br />only require semi-annual reporting. <br />Provided below is a summary of the technical items that need to be completed for the site <br />to be eligible for closure in two (2) quarters of monitoring, along with the associated <br />schedules and costs. <br />This proposal covers the second monitoring event, scheduled to take place in November <br />2018. Also provided are the costs to close the site after approval from FDEP using the <br />LSSI option. (These costs are the same as they were in a previous proposal sent to your <br />office on December 11, 2017, which is also attached). Comparison of the former proposal <br />with this one shows the extent to which the sampling costs given below have decreased <br />by the reduction of the number of wells requiring analytical testing. <br />Applied Flydrogeologic Solutions LLC <br />6216 NW 43`d Street, Gainesville, Florida 32653 <br />Telephone 352-214-0903 Email 'hirschLMahsflorida.com <br />