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' ' A letter report will be prepared discussing the peak flows <br /> from the system and the adequacy of the Sanitary District' s Oak <br /> Grove Interceptor. If it is found that supplemental capacity is <br /> necessary, alternatives will be discussed and estimates of costs <br /> will be presented. <br /> Phase II <br /> This phase will include the gathering of field data. A visual <br /> inspection of the manholes will be performed. Manhole data such as <br /> the flow; the number, size and location of lines; the condition of <br /> barrel , casting, and lid will be recorded. All the sewers will be <br /> smoke tested. Interviews will be conducted with some of the area <br /> residences with regard to the history of problems with local drain- <br /> age and sewers. The flow metering will be continued from Phase I . <br /> A preliminary report will be prepared summarizing the data <br /> collected in Phases I and II. After review of the preliminary <br /> report, we will consult with the City and Sanitary District to <br /> determine the extent of activities in Phase III . <br /> Phase III <br /> This phase will involve more detail data collection by tech- <br /> niques such as dye testing, ditch flooding, cleaning and televising <br /> sewers and house services. Because of the expense of these methods <br /> of investigation, the scope of Phase III will be decided upon after <br /> evaluating the data collected during the first two phases. <br /> Phase IV <br /> The final phase will involve preparing a final report. The <br /> report will tabulate the results of our investigations, summarize <br /> our findings, and present our conclusions on the feasibility of � <br /> reducing inflow. '� <br /> 1 <br />