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i • <br />% <br />r<r <br />I <br />‘fc <br />ii <br />maining open land is developed, however, provisions should <br />be made to allow for ponding of runoff to reduce the trans­ <br />portation of sands and oils into the marsh and to increase <br />the time of concentration of the runoff. <br />Alternate No. 2, the raising of the level of Kelly <br />Avenue and the reliance on evaporation and seepage into <br />the ground of the pond effluent, would necessitate the raising <br />of the street grade on Kelly Avenue for approximately a 400 <br />foot stretch of the roadway. Soil borings taken in conjunc­ <br />tion with the recent reconstruction of sewer lines across <br />this marsh, have indicated very deep deposits of peat in this <br />marsh area and have indicated that the roadway and those <br />utilities constructed under it are actually floating over this <br />peat deposit. The roadway has over consolidated the peat <br />to a point where the roadway is rex^tivoly r able in its <br />present situation. It is our opinion that if the roadway <br />is to be raised, that the underlying peat deposit would have <br />to be excavated and removed to provide the road with adequate <br />foundation. This action would necessitate the removal and <br />replacement of existing sanitary sewer and watermain and <br />would therefore disrupt the surrounding area during the <br />ooBStruetion operations. It is felt that in the attempt to <br />raise the road sia^ly by filling on top of the existing <br />roadway, would result in the displacement of these public <br />utilities and that the over burden placed upon the road %fould