3 PCSR 03-29-1994 - Laserfiche WebLink

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Mr. Steve Ach • March 22, 1994 Page Five The drive along the north side of the Target store has no positive drainage. If a catch basin was to plug, the water must pond 0.45 feet before it will overflow the high points into the next catch basin. If this was to occur in winter, it would ice an area in the drive approximately 65 feet long. The grades in this area should be reviewed to provide positive drainage to the pond. The grades at the top of the loading ramp located at the southwest corner of the Target store drops 2.88 feet from east to west, which will allow for a part of the parking and drive area to drain down the ramp to catch basin #83. The grade at the southwest corner of the ramp should be raised to minimize the drainage on the ramp area. Catch basins #79 and #80 could be raised to lessen the drive grade to Jackson Avenue. Grades need to be adjusted at Jackson Avenue and the driveway entrance opposite the Target store to allow for a flatter landing area. A flared end section needs to be extended from catch basin manhole #78 to the west to drain the low area on the adjacent property. The developer must obtain a grading easement from the adjacent property (the exception) along Jackson Avenue to match their grades along the south line of the adjacent property. There are missing proposed contour lines south of catch basin manhole #76 and manhole #77. Grades along the curb line east of manhole #77 and south of the Cub Foods store will create a flat area of 932.77 as shown. In areas where drainage is to be carried along the curb lines and sheeted across bituminous areas, drainage arrows should be shown. Example: the parking lot on the east side of the buildings between the Target store and Cub Foods store indicate the drainage going south along the curb lines, but is the drainage also intended to sheet across the parking area to catch basin manhole #67? • The retaining wall along the south property line is shown to be 16 feet high. The wall should be terraced in four to five foot high increments, as discussed by the developers at the public hearing. TJM:tp 230/152-2212.mar