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EXHIBIT A -SCOPE OF WORK The Bowman Consulting team will assist Indian River County Dept of Utility Services (IRCDUS) staff in conducting an evaluation of potential internal and external pipe corrosions on a segment of 20" diameter ductile iron pipeline for a reclaim water main serving IRCDUS. This investigation will require a collaborative effort between County staff, County GIS, County Maintenance staff and field personal, the Consultant (Bowman Engineering), scientists, subconsultants and other parties. We use the word "assist" because the system knowledge, history, impacts require us to seek input ideas, and history from County staff that have dealt with the pipe corrosions for several years and have valuable historical knowledge of the main and past failures. Bowman Consulting is conscious of the County's budget and will seek to isolate the corrosion or pitting (Corrosion) as internal or external in nature prior to focusing efforts in investigation. R&M Service Solutions will be utilized to provide visual and acoustic analysis of the interior of a segment of the reclaim main, and the results of this analysis will directly impact the focus of the investigation. The detailed breakdown of the proposed tasks and anticipated evaluations is presented below and will be performed on an incremental basis. Corrosion analysis is unique because it can be caused by many different things. That means that we can go down an evaluation path to determine a null result. We have set this proposal up to address issues to minimize overall evaluation costs. Phase IA. Initial Confirmation — Internal Corrosion We will rely exclusively on the visual and acoustic analysis by R&M to evaluate one selected 2,500 LF section of the main in the vicinity of known failure points for internal corrosion. The evaluation of a limited pipe segment is proposed due to the cost of the internal pipeline evaluation and analysis. We will work with County staff to determine the best run of pipe to sample based on known issues. If internal corrosion is identified as a result of the analysis, we will focus further on this source and additional wet taps and evaluation could be required to assist in identifying potential future failure points and determine the significance of internal corrosion in the main. If internal corrosion does not appear to be evident in the limited internal analysis, our efforts will be concentrated on potential external sources and a significant savings will be realized by not evaluating the interior of the entire 2 -mile run of pipe. Phase IB. Initial Confirmation — External Corrosion It is critical to confirm whether the actual pipe surface defects are contributing to external pitting or external corrosion. It is essential that this be confirmed as it establishes the backbone of investigation. Simplistically, pitting is the extraction of the metal surface from the pipe which means that metal ions are leaving the pipeline. Conversely, corrosion is the decay and/or attraction of other things to the pipeline reduce the pipe material to ionic form. By definition: "Pitting corrosion is a localized form of corrosion by which cavities or "holes" are produced in the material. Pitting is considered to be more dangerous than uniform corrosion damage because it is more difficult to detect, predict and design against. Corrosion products often cover the pits." "Pipeline corrosion is a natural deterioration and destruction of pipe material and essential properties due to electrochemical and other ingredient reactions of pipeline materials with their environment - on the inside as well as outside surfaces." The following Phases will describe the effort towards evaluating external corrosion.