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IRCUD Well 5-4 Technical Memorandum <br />December 9, 2016 <br />Page 4 of 4 <br />JLA Geosciences, Inc. <br />• The downward growth of scaling observed in the 2016 well video from casing cracks and casing <br />joint separations between 38 feet and 46 feet BPL indicates leakage of fluid from behind the PVC <br />well casing and represents a sanitary seal hazard. <br />• Potential repairs needed to fix the S4 well casing cracks including are cost prohibitive and not <br />guaranteed to resolve the casing integrity and alignment issues. <br />Based information gathered to date as outlined in this technical memorandum, JLA recommends IRCWUD <br />plug and abandon the existing well S4 and replace with a new well S4 instead of pursuing additional <br />rehabilitation work. <br />If there are any questions, please don't hesitate to contact me directly at (561) 746-0228. <br />Respectfully submitted, <br />JLA Geosciences, Inc. <br />n F edr'- s, P.G. <br />Senior Hydrogeologist <br />State of Florida Prof. <br />Geologist Registration No. 2709 <br />jlageosciences.com <br />P109 <br />