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45 manganese levels in other cormnunities, Public Services Director DeGardner noted that <br />46 the levels appear to lessen moving east. Mr. Johnson added that the levels can vary even <br />47 in close proximity and the only way to detennine levels is to drill a test well. Staff is <br />48 workincy to gain information from other cities on their water quality. <br />49 <br />5o Councilmember Stoesz asked if the possibility of micro treatment (adjacent to wells) has <br />51 been investigated. Mr. Johnson explained that while that process could provide savings <br />52 on piping the cost of the individual treatment facilities is generally prohibitive. <br />53 <br />54 Site and Construction —site. noted is -Birch Street and 1 din Avenue South.. utilizing <br />55 approximately four acres of land. Water treatment sites are considered a good neighbor. <br />56 Architectural options are available but these facilities are generally built to last a long <br />57 time. not from wood. <br />58 <br />59 Estimated Costs —Engineering, planning, legal, land acquisition is estimated at $20 <br />6o million. Ongoing maintenance estimated at $166,000 per year. Options for fundznu <br />61 would be trunk water fund or future rate revenue (after a rate study). <br />62 <br />63 Recommendations —Reduce levels of manganese in the City water system through <br />64 development of a water treatment facility, consider a gravity water treatment plant and <br />65 consideration of future plant expansion needs. A water treatment pilot study (for a pilot <br />66 plant) is normally the first step in development of a plant. Consider rate study to evaluate <br />67 funding. A possible schedule for moving forward is included in the report. <br />68 <br />69 Mayor Rafferty asked about the longevM of data that's gained in a pilot study he <br />70 wouldn't want to invest funds and have to repeat the exercise. Mr. Johnson said <br />71 typically the test data is valid for two to three years after the study. <br />72 <br />73 Councilmember Stoesz asked how properties that are adjacent to a well are impacted as <br />74 far as water content. Mr. Johnson explained that there could be some indication of <br />75 higher levels of something like manganese for a house next to a well during peak periods. <br />76 Community Development Director Grochala added that over a twenty year view. the plan <br />77 is to buildout trunk lines for water. <br />78 <br />79 Mayor Rafferty explained that it's important to him to be able to see the whole picture in <br />80 order to make. judgments about what's going to be the best approach for the City. Public <br />81 Services Director DeGardner added that this study of a water treatment fa6lity has been <br />82 brought forward based on recent discussion and direction from the council; it's an option <br />83 to be considered, it includes possibilities and in the meantime staff would intend to <br />84 continue to utilize the water system as it exists. Mr. Grochala added that the next step <br />85 would probably be to look at possibilities for funding just so that information can be a <br />86 part of future decision making. Council melnber Ruhland noted that he'd be interested in <br />87 understanding the City's position in the area of outstanding capital debt. Councilmember <br />88 Lyden remarked that he's concerned that the cost could rise as the Cite waits. <br />89 Administrator Cotton explained that a utility rate study would provide overall <br />2 <br />