03/10/2004 ZONING BOARD OF APPEALS Minutes

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Southside Realty Trust Engineering Review Page five B. Sheet SK-2 1. The sheet shows the location of several lots with lot numbers and areas. There are no lot line dimensions or directions shown. They should also be shown on Sheet SK-1. 2. The general grading with new contours shows that there will be significant changes in drainage patterns within the site. They would be presumably handled with the proposed drainage design. However there are several aspects to the grading proposal that may be difficult to control when the project is completed. a. Several contours are shown to run through proposed buildings. Where this takes place grading may not work without adjustment. See lots 2, 9 and 11. b. The two 4-car garages located on lot 10 may get flooded due to the grading pattern of the pavement in front of them. C. Contours on each side of the proposed road show that there will be a crown to the road and swales or shoulders on each side. What is the intent with the catch basins shown off the sides of the pavement? Will surface runoff be collected in the swales and then be directed to the basins? If so the design will not work unless connecting pipes are installed under each driveway. d. How will the swale grades be reconciled with the grades of the intersecting pavements? e. The parking area between the buildings on Lot 9 has uncontrolled sheet drainage at a grade of 10%. This runoff will be carried directly onto the surface of the intersecting • street and could become dangerous with icy conditions. f. Much of the surface runoff from the two largest parking areas on the commercial site will not be intercepted and controlled by swales. Grading suggests it will be carried out the entrance to Route 130. There should be catch basins at the entrance at Route 130 to collect runoff from entering the public way. g. Two of the bioretention areas on the commercial lot are immediately upgradient of the subsurface absorption areas of the wastewater treatment system. What impact on this system might there be due to infiltrated storm water? h. There is no dimensioning shown on the plan for how parking areas are to be constructed. Spot grades should be shown at critical portions of the pavement surfaces. i. Lines are shown on the plans for sanitary sewers and manholes that will lead to the wastewater treatment area. No invert elevations, manhole grades or pipe lengths are shown. It should be demonstrated that there will be no interference between sanitary sewer lines and storm water pipe lines. j. The size of the proposed water main should be shown on the plan. C. Sheet SK-3 1. The profile plan shows no existing and proposed grades for the road centerline. • 2. The existing grade at Route 130 is not shown.