Lee's Summit

Sheet C103: The grading at the end of the rip rap does not appear to make sense from an elevation standpoint, nor from an erosion standpoint. There does not appear to be any form of swale created for the discharge, and it appears there is a long, flat area just downstream of the rip rap. If this area will have a sediment basin, then shouldn't it be shown in this area, along with the grading?

Please refer to the City Traffic Engineer's comments related to the proposed four way stop at Buckthorn St. and Arboridge Dr. This comment may change the way you are proposing to provide an ADA-accessible route across the intersection, where there is no longer a stop control (i.e., due to the fact that a four way stop is not desired by the City).

Sheet C116: Please see the City Traffic Engineer's comments related to the City's desire to eliminate the proposed four way stop controlled intersection.

Sheet C119: Please see comments from the City Traffic Engineer related to the elimination of the four way stop controlled intersection. This may affect the design across Buckthorn St. The City's desire for non-stop controlled intersections is to have a smooth driving experience across the intersection, with no abrupt change in grade.

Sheet C120: The maximum distance between the tactile warning strip, and the back of curb was not shown on the northeast and southeast corners of the intersection. The maximum allowed distance is 5.0 feet. Please label this dimension, and ensure it is less than or equal to 5.0 feet.

Sheet C121: The same comment above applies to the ADA-accessible ramps shown in the southwest and southeast corners of the intersection. Please provide a dimension, and ensure it is less than or equal to 5.0 feet.

General Comment Related to the ADA-Accessible Ramp Details: Section A-A, B-B, and C-C were missing from the plans. To recap the requirements contained in Section 5304.8 of the Design and Construction Manual, Section A-A is the cross-section along the long axis of the ramp, Section B-B is the cross-section along the width of the ramp, and Section C-C is the cross-section along the curb opening of the ramp. These cross-sections must be shown, along with corresponding locations of the cross-sections shown on the plan view.

General Note Concerning the Hydraulic Grade Line Shown on the Profile Views: The system was designed for the 25 year (i.e., 4% chance) storm event. As such, the hydraulic grade line for this event should be at or below the crown of the pipe. There are numerous instances where this is not the case.

Sheet C124: Geofabric is required for the rip rap shown. Please provide sufficient notes.

Sheet C140: A drainage swale was shown on the Preliminary Development Plan beginning at Lot 125 and Lot 147, which continued to the north. The Master Drainage Plan does not show this swale, and it appears a swale is warranted.

Sheet C140: Existing and proposed grades must be shown on the lot corners. As shown, only the proposed grades are shown.

Sheet C140: References to the "MLO" are cited througout this sheet. The City does not recognize a "MLO", but rather, the Minimum Building Opening Elevation (MBOE). Please change all references to "MLO" to "MBOE".

Revise the noted design speed from 30 mph to 25 mph. The alignments looks okay, but there's one K value that does not meet 30 mph (it does meet 25 mph). No change to alignments (horizontal and vertical) are needed.

Remove the stop signs and street name signs from Buckthorn Street at the intersection of Arborridge Dr. Move the street name signs to the proposed stop signs on Arborridge Drive. The intersection does not warrant an all-way stop condition.