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ATTACHMENT A <br /> aooG <br /> SCOPE OF WORK <br /> INDIAN RIVER COUNTY <br /> WATER QUALITY SAMPLING DURING THE NORTH COUNTY <br /> WATER TREATMENT PLANT EXPANSION <br /> BACKGROUND <br /> The Indian River County (County) Soil and Water Conservation District (SWCD) has recently <br /> expressed concerns to the County over the pending North County Water Treatment Plant <br /> (WTP) expansion project. The concerns focus on the neighboring land owners around the WTP <br /> site. To the west of the WTP (upgradient), there are several functioning citrus groves, a number <br /> of ranchettes (former citrus groves), and several smaller residential sites. Many of these <br /> properties continue to utilize the artesian flow wells that were installed by the original citrus <br /> farmers for both irrigation and potable use. <br /> The SWCD is concerned that once the County installs and places in to operation the additional <br /> six supply wells needed for the expansion project, the artesian wells will cease to flow and may <br /> require the use of pumps to continue to be of service to the owners. While hydraulic modeling <br /> performed by both consulting engineers and the St. Johns River Water Management District <br /> (SJRWMC) indicate that drawdown from the additional wells will likely not negatively impact <br /> the neighboring wells, the County has agreed to conduct monitoring of the wells to establish <br /> baseline data prior to the project completion. <br /> The County proposes to sample the neighbors' wells for water level, chlorides, pH and <br /> dissolved oxygen during the bidding and construction phases of the expansion project. It is <br /> anticipated that this period of monitoring will result in approximately 24 months of background <br /> data. This data will provide a baseline against which to compare data after start-up of the <br /> expanded facilities . This will allow the County to quantify the impacts, if any, of the additional <br /> withdrawals. <br /> Services to be provided under this authorization are provided below. <br /> SCOPE OF SERVICES <br /> CDM will perform the following task services associated with the sampling/ monitoring <br /> program. <br /> Task 1. 0 Acquisition of Necessary Field Equipment <br /> CDM will purchase the necessary field equipment to perform the required sampling. <br /> Equipment to be purchased will include a 500-foot water level probe; a combination chloride, <br /> dissolved oxygen, conductivity, and temperature water quality monitor and probe; and a <br /> pressure gauge with a range of 0 to 100 psi (for measuring artesian flow) . <br /> Upon completion of the project, the purchased equipment will be provided to the County to <br /> retain for any future sampling/ monitoring. <br /> A-1 mh2440Aoc <br />