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Aquifer,part of the boulder zone (>10,000 mg/L TDS) as an alternative water supply to <br /> supplement the existing UFA via test well evaluation. This task is intended to confirm <br /> which of the assumptions made regarding impacts to water quality is most likely to occur. <br /> This work will consist of drilling pilot hole through the existing borehole and logging <br /> water quality and yield data. <br /> Test well evaluation will provide the following information: <br /> • Determine confinement between APPZ, LFA and UFA <br /> • Define source water quality(and Quantity?) <br /> • Understand differences in yield/production between UFA, LFA, and APPZ <br /> • Define potential leakance between both UFA,LFA, and APPZ <br /> Consultant will prepare documents for test well deepening of existing wells N-7(Hobart) <br /> and S-1 (Oslo) and provide coordination with potential well drillers to conduct the work. <br /> Consultant will assist IRC purchasing department to solicit price proposals to perform the <br /> work. Consultant will respond to reasonable number of questions from prospective <br /> bidders. <br /> Consultant, along with subconsultant JLA Geosciences, Inc.will review price <br /> proposals/bids from contractors and prepare bid review letter. <br /> Consultant will review schedule prepared by the Contractor,provide coordination with <br /> IRCU operations and subconsultant, JLA Geosciences, and provide oversight of the well <br /> deepening procedures and activities. <br /> Consultant will provide hydrogeological support and observation services during Upper <br /> Floridan Aquifer well deepening, including pilot hole drilling and reaming, geophysical <br /> logging,completion interval drilling and associated testing,preliminary well <br /> development, acid treatment,pumdevelopment and testing, ost rehabilitation <br /> development testing and specific capacity testing. <br /> Consultant will also provide well performance testing, including water level <br /> measurements, specific capacity analysis,and basic water quality testing(conductivity, <br /> chlorides, silt density indices—SDI's and sand testing). Consultant will provide up to 140 <br /> hours of on-site hydrogeological services(JLA)for well deepening. <br /> Consultant will review data and prepare supporting information and technical evaluation <br /> into merits of deepening the wells,consisting of the following: <br /> • Reverse Air Drilling and field testing for 2 UFA Wells <br /> • Geophysical logging and video for 2 wells. <br /> • Pump Testing AAPZ/LFA? <br /> • Pumping test UFA(data partially available from North County APT testing— <br /> Task 6) <br /> • Data review and recommendation for rehabilitation including backfill depth, acid <br /> F:\Utilities\UTILITY-Engineering\WATER\CUP-10524\Admin\KHA\2021.5.1-FINAL AWS Eval Scope fh <br /> MDM vb.docx <br /> Page 3 01'11 <br />