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ATTACHMENT A <br /> SCOPE OF WORK <br /> INDIAN RIVER COUNTY <br /> NORTH COUNTY WATER TREATMENT PLANT EXPANSION <br /> ARTESIAN WELL SAMPLING PROGRAM <br /> WORK ORDER NO. 6 - AMENDMENT NO. 1 <br /> L Project Description <br /> In response to concerns raised by the Indian River County (County) Soil and Water <br /> Conservation District (SWCD) surrounding the North County Water Treatment (WTP) <br /> Plant Expansion project, the Board of County Commissioners (BOCC) authorized CDM <br /> to perform water quality sampling of offsite artesian wells neighboring the WTP. Work <br /> Order No. 6 was executed by the BOCC on April 18, 2006. <br /> Upon receiving the Notice to Proceed from the County, CDM and County staff met with <br /> members of the SWCD to determine the artesian wells most representative of the area's <br /> hydraulic conditions and those with the most potential to be affected by increased <br /> pumping from the expanded WTP. CDM's original work order was to sample <br /> approximately 14 neighboring wells, the County's 3 production wells, and the 2 deep <br /> monitoring wells at the WTP on a monthly basis for artesian pressure and a series of <br /> field parameters. <br /> A field visit to each of the wells identified by the SWCD revealed that the majority of the <br /> wells were not configured to allow for measurement of artesian pressure or for <br /> collecting a water sample. The only well in the program that was equipped with a <br /> pressure gauge was located at Sandridge Golf Course. This gauge was replaced with a <br /> new one similar to the ones CDM installed on the remaining wells to ensure consistency <br /> and similar calibration. CDM also installed sampling taps on all but one well. These <br /> additional efforts and costs were not anticipated and as such were not included in the <br /> budget of original work order. <br /> Furthermore, the SWCD requested that the County consider increasing the frequency of <br /> sampling to weekly to better represent the seasonal fluctuations (primarily during the <br /> wet season) . The County verbally directed CDM to accommodate the request and begin <br /> sampling on a weekly basis with the next event. CDM has been collecting weekly <br /> samples since May 26, 2006. <br /> ff. Scope of Services <br /> The sampling frequency of once a month set forth in the original Work Order shall be <br /> amended to a weekly frequency under this amendment. CDM will also be reimbursed <br /> for additional services to reconfigure the wellheads of the project wells to include <br /> pressure gauges, sample taps, and valves; where needed. Written reporting frequency <br /> shall remain monthly. <br /> 1 nmsi doo <br />