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Amendment # 1 to% Exhibit # 1 1 / 19/2010 Page 2 A brief description of the Scope of Services and Deliverables for Amendment # 1 to Work Order # 12 is provided below: • Scope of Services MM and ECI will collect , compile , and analyze existing water quality data from both the Count wastewater & water treatment plants and the communities along the barrier island . This data will be used to estimate the chloride concentrations in the discharge waters from the County facilities and in the ground waters along the barrier island . This data will be used to determine acceptable mixing ratios for demineralized concentrate with existing reuse and other alternate water sources . MM will collect and compile irrigation data from potential major reuse water users to determine average and maximum reuse usage rates and seasonal irrigation trends . This information will be compared to existing and expected near future available reuse water. MM and ECI will review available information to make a conceptual determination as to the minimum flows available through the Indian River Farms Water Control District ' s ( IRFWCD 's) North Relief Canal and Lateral D Canal that may be treated and converted into reuse water. A seasonal temporal analysis of the chloride concentration will be made for each canal . An analysis will also be conducted of the potential to treat and store stormwater from the Lateral D Canal in the West Plant wetland system . This analysis will focus on boundary conditions to prevent damage to the wetland vegetation and treatment capacity, and to prevent disruption of the operation of Lateral D Canal . MM and ECI will prepare a Alternative Reuse Water Concept Plan that considers the use of IRFWCD canal water to supplement the County' s reuse water system . We shall develop conceptual designs to maximize the discharge and mixture of demineralized concentrate to the reuse system and to minimize or eliminate the discharge of effluent to the West Plant wetland system . In addition , the plan will describe the manner in which the Spoonbill Marsh demineralized concentrate treatment facility may also serve as a treatment system to treat water from the North Relief Canal prior to discharge into the Indian River Lagoon . MM and ECI will develop a preliminary estimate of the TMDL credits that could be generated by treating stormwater from Lateral D Canal through the existing West Wastewater Treatment Plant site man-made wetland system . In addition , an estimate will be made of the TMDL standards and credits associated with the Spoonbill Marsh and how these credits may affect continued discharges by County facilities into surface waters . Prior to completion of the Preliminary Engineering Report , MM and ECI will meet with the Florida Department of Environmental Protection ( FDEP - Orlando office) as well as the St . Johns River Water Management District Consumptive Use staff ( Palm Bay office) to discuss the alternate water supply concepts . The intent of these meetings will be to solicit comments regarding the plan , to discuss permitting issues , and to discuss potential TMDL credits . In addition , MM will discuss potential funding opportunities with FDEP (Tallahassee office) and the St Johns River Water Management District (SJRWMD) for implementation of the conceptual alternate water supply plan . To support preparation of the Preliminary Engineering Report MM and ECI will develop budget capital construction cost estimates for the proposed improvements . The Preliminary Engineering Report shall also describe potential sources of funding for the improvements .