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Our File #0947 1 / 19/2010 NON - EXCLUSIVE PROFESSIONAL ENGINEERING AGREEMENT CONTINUING CONSULTING SERVICES AMENDMENT #1 TO " EXHIBIT 1 " • Project Description Masteller & Moler, Inc. (MM) along with its sub-consultant , Ecotech is pleased to provide you Amendment # 1 to Work Order # 12 ; which p ovidesnfor Ip ofessio)nal engineering services for preparation of a Preliminary Engineering Report relating to development of reuse water alternative sources for Indian River County , Florida . There are several reasons why the preparation of this Preliminary Engineering Report is timely . First , the County has received several expressions of interest from potential new reuse water customers including the Johns Island and Windsor barrier island communities . In addition , several existing customers including Grand Harbor and Johns Island West have expressed interest in receiving more reuse water. Secondly , the County has recently completed a study to develop updated reuse water rates . The new rate schedule will be adopted in the near future . Lastly , the County will be required by the Florida Department of Environmental Protection ( FDEP) to meet Total Maximum Daily Load (TMDL) limits for several of its potable water and wastewater treatment facilities . It is clear that the best method for meeting TMDL limits is to reduce waste stream discharges by expanding the County ' s reuse water system . This is a win -win solution since this will eliminate nutrients in the wastewater discharge and add nutrients to the reuse water reducing the need for fertilizers by the users . As a result of expansion of the County ' s reuse water system , it is expected that demand may exceed supply . The Preliminary Engineering Report will describe improvements to expand the County' s supply of reuse water through the use of alternate water sources including Indian River Farms Water Control District ( IRFWCD) canal water and demineralized concentrate , as known as brine . The use of alternate water sources such as treated canal water and/or diluted demineralized concentrate will allow the County to provide an increased and stable supply of reuse water to existing and future customers . By mixing demineralized concentrate with the reuse water, demineralized concentrate can be converted from a disposal problem into a revenue source . Reuse water alternate sources will also allow the County to meet TMDL target levels for the West Wastewater Treatment Plant and the South County Reverse Osmosis demineralized concentrate . The Preliminary Engineering Report will also consider improvements that may be implemented at the West Regional Wastewater Treatment Plant site and the Spoonbill Marsh Brine Treatment Facility to further enhance the supply of water for the County 's reuse water system . The improvements to be described in the Preliminary Engineering Report will provide the following benefits : A . Provide a Stable and Increased Supply of Reuse Water B . Allow the County Utilities Department to meet Point Discharge TMDL Targets ; C . Provide Reuse Water System Revenues ; D . Reduce Reliance on Deep Wells for Supplemental Irrigation ; E . Create Pollutant Load Reduction credits