| Review Type |
Outcome |
Est. Completion Date |
Completed |
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Engineering Review
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Corrections
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10/23/2020
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10/23/2020
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Gene Williams, P.E.
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Corrective Action Required
It appears the plans are directly tied to the Napa Valley Retention Basin Conversion Project. The line is direct connected to the outlet structure for the retention basin project, and as such, the revisions to the storm line should be combined into the above referenced plan set. The complete plan set should be combined, and uploaded into the Napa Valley Retention Basin Conversion Project file.
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Corrective Action Required
Provide specific call outs concerning the removal of the existing pipe. As shown, it is not clear whether this pipe is to remain in place, or removed. It must be removed.
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Corrective Action Required
Hydraulic grade line for the design storm must be shown. If not the 100 year HGL, then an emergency overflow swale must be established between the lots.
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Engineering Review
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No Comments
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07/25/2016
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07/29/2016
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Gene Williams, P.E.
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Corrective Action Required
Please provide a label on the specific sheets pertaining to each section showing the sidewalk to be onstructed. The label on Sheet 4 of 17 is very easy to miss, and unclear as to where these segments are to be constructed. In order to make this clear, please show the segment along Tract A in the southwest corner of the project, and along Tract A in the northeast corner of the project along the stream buffer. Notes should be included on Sheet 7 of 17, 8 of 17, and should point to the areas where this sidewalk is to be constructed.
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Corrective Action Required
If desired, you may submit two (2) full size and two (2) half size revised Sheets 7 of 17 and 8 of 17 rather than a full submittal. A revised CD-ROM will be needed in addition to the paper sheets. We will be able to collate the revision sheets into the approved plan set.
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Corrective Action Required
It appears the Engineer's Estimate dated July 15, 2016 was missing a line item for final subgrade compaction, and grading for the Master Drainage Plan.
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Corrective Action Required
It appears the Engineer's Estimate dated July 15, 2016 showed a low unit cost for ADA-ramp construction, based on similar projects with similar scope. Typical unit prices for this item have been in the $1,000 per each range rather than $150 per each.
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Traffic Review
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No Comments
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07/25/2016
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07/25/2016
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Michael Park
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Engineering Review
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Corrections
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06/07/2016
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06/14/2016
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Gene Williams, P.E.
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Corrective Action Required
Please include the Master Drainage Plan with the plan set. The index should be updated to reflect the addition of the Master Drainage Plan to the plan set.
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Corrective Action Required
MLOs are called-out on the Master Drainage Plan. The City does not recognize the term "MLO". Was the intent to label this as MBOE?
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Corrective Action Required
MBOEs must be a minimum of 2 feet higher than the calculated 100 year water surface elevation. It appears 1 foot was used.
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Corrective Action Required
0.6% slope within the swale on Napa Valley 1st Plat is still shown. This will need to be updated since this is a substandard running slope within a grass-lined swale.
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Corrective Action Required
Master Drainage Plan: The City recognizes the following basement types for purposes of labeling on the Master Drainage Plan: 1) standard, 2) daylight, and 3) walkout. Please change the labeling scheme accordingly.
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Corrective Action Required
Notes should be provided on all pertinent sheets stating that the sidewalk along the common area tract (i.e., near the stream buffer to the northeast, and the common area tract to the southwest) must be constructed as part of the street improvements, rather than later.
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Corrective Action Required
Sheet 8 of 17: It appears a sag exists on Napa Valley Dr. at station 0+64. An underdrain would be required at this location in accordance with the City of Lee's Summit standard drawing UD-1.
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Corrective Action Required
Sheet 8 of 17: It appears a sag exists on Meritage Ln. at station 0+44. An underdrain would be required at this location in accordance with City standard detail UD-1.
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Corrective Action Required
All Storm Profile Sheets: Hydraulic grade lines should be shown in graphic format for all storm sewers. The design storm should also be shown on the profile view. Where the system cannot handle the 100 year event without surcharging, a suitable overflow route must be established. The overflow route must be shown on the Master Drainage Plan, and should include overflow swales between lots, or other features to minimize potential flooding of homes.
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Corrective Action Required
Master Drainage Plan: It did not appear that overflow swales or other features to manage the 100 year event were shown between lots. Please see the above comment for more information on this requirement.
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Corrective Action Required
In reference to the above comments concerning overflow swales, the MOBE of adjacent lots must be at least 2 feet higher than the calculated 100 year water surface elevation within the overflow swale.
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Corrective Action Required
It appears that many of the MBOEs (assuming MLO was intended to be the MBOE) are referenced to the 100 year water surface elevation within the detention basin. It would appear that there are a few lots which would be adjacent to overflow swales, and as such, the 100 year water surface elevation within these overflow swales should be used rather than the 100 year water surface elevation within the detention basin.
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Corrective Action Required
As a spot check of the MBOEs shown on the lots, please refer to Lot 146. The table shows a 100 year water surface elevation of 995.0, presumably within the rear yard swale. However, it appears the 100 year water surface elevation is well above 995.0 based on the limits shown. This would also appear to pertain to all of the lots adjacent to this swale. Please check each lot for proper MBOE determination, keeping in mind that a 2 foot minimum elevation difference is required between the 100 year water surface elevation within the swale, and the lowest building opening elevation.
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Corrective Action Required
If desired, multiple MBOEs may be called-out on the Master Drainage Plan for the side lot lines. This may help since there is considerable fall between the lot corners adjacent to the swale on the lots discussed in the comment above. If desired, a note can be provided on the Master Drainage Plan stating that "...where multiple MBOEs are called-out, interpolation between the MBOEs may be allowed during the preparation of a plot plan." If there are any questions concerning this, please contact the City for further clarification.
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Traffic Review
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Corrections
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06/07/2016
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05/24/2016
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Michael Park
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Corrective Action Required
The minimum horizontal centerline radius for safe sight distance on a 25 mph roadway design does not appear to be met for Curve #5, SW Napa Valley Dr. near Blackstone Place. Verfiy adequate vertical curve design (K Values) for 25 mph in this area as well.
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Corrective Action Required
Show a stop sign/street name signs on SW Napa Valley Dr. at SW Blackstone Pl.
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Corrective Action Required
Show a stop sign/street name signs on SW Meritage Ln. at SW Blackstone Pl.
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