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Ms. Susan Hoyt <br /> December 22, 1992 <br /> Page Two <br /> It is our recommendation that the watermain in the three sections of the Grove Area not be <br /> replaced. In our opinion, two watermain breaks in each section in ten years is not a high <br /> frequency of breaks. With a low frequency of breaks, even if the watermain is replaced in <br /> conjunction with the street project, it likely will not substantially reduce the risk of future <br /> watermain breaks because a watermain break may occur even if the main is in good condition. <br /> An example of this was during the 1991 Street Improvement projects. On Maple Knoll Drive <br /> where it begins to turn north, the watermain was inspected by St. Paul Water Utility when it was <br /> exposed during the storm sewer construction and determined to be in good condition; therefore, <br /> it was not replaced. Six months later the street was dug up in this location to repair a watermain <br /> break. <br /> We will continue to investigate any services that are made of lead and would propose to have <br /> them replaced as part of this project. <br /> If you have any questions or require further information, please call. <br /> Sincerely, <br /> MAIER STEWART ASSOCIATES, INC. <br /> W V• .1 711= 4 <br /> William K. Westerberg, P.E. <br /> WKW:tp <br /> 028- izm.aec <br />