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<br />e <br /> <br />Mr. Steve Ach <br />January 12, 1994 <br />Page Three <br /> <br />· It is not shown on the plans where the roof drains outlet runoff. However, this raises <br />a question of whether or not a single catch basin in each low area provides sufficient <br />inlet capacity to collect all the runoff from the site. It is suggested that the developers <br />carefully review the drainage calculations to ensure that adequate capacity to take <br />storm water runoff into the pipe system is provided. <br /> <br />· The watermain coming into the site is very close to the building and it contains two 90- <br />degree bends as it proceeds to the southeast corner where a hydrant is located. At a <br />minimum, the watermain should be moved further away from the building so that, in <br />the case that it needs to be excavated in the future, neither the concrete curb and gutter <br />nor the side of the building will be in danger. An alternative solution may be to pick <br />a route from the existing hydrant directly to the north, straight through the parking <br />area, and then provide a little longer service stub into the mechanical room. <br /> <br />· The watermain on the project is shown to have seven feet minimum cover. This <br />should be increased to a minimum of seven and a half feet. <br /> <br />. <br /> <br />· The sanitary sewer service from the building shows an invert approximately four feet <br />above the invert of the existing manhole to which it is connecting. It also indicates that <br />a vertical drop should be provided to a point two feet above the invert. We would <br />recommend that if a drop is to be provided, it should be provided on the outside of the <br />manhole, given the large number of units conveyed through this one service. Perhaps <br />a better solution would be to just add additional grade to the sanitary sewer service <br />line, such that it does enter the manhole at the existing invert. <br /> <br />· All construction traffic to and from the site should be restricted to the Railroad right- <br />of-way at the south and not allowed to access the property from School Street. <br /> <br />If you have any questions regarding any of these comments, please call. <br /> <br />Sincerely, <br /> <br />MSA, CONSULTING ENGINEERS <br /> <br />T::ft!~ <br /> <br />. <br /> <br />TJM:tp <br /> <br />206-1202.jan <br />