Lee's Summit

DE C&O #01 Eng Plans – FP/PP

All required engineering plans and studies, including water lines, sanitary sewers, storm drainage, streets and erosion and sediment control shall be submitted along with the final plat and approved prior to the approval of the final plat. All public infrastructure must be substantially complete, prior to the issuance of any building permits.

DE C&O #03 Eng & Insp Fees

All Engineering Plan Review and Inspection Fees shall be paid prior to approval of the associated engineering plans and prior to the issuance of any site development permits or the start of construction (excluding land disturbance permit).

DE C&O #04 Cert FA or Escrow

All subdivision-related public improvements must have a Certificate of Final Acceptance prior to approval of the final plat, unless security is provided in the manner set forth in the City's Unified Development Ordinance (UDO) Section 7.340. If security is provided, building permits may be issued upon issuance of a Certificate of Substantial Completion of the public infrastructure as outlined in Article 3, Division V, Sections 3.540 and 3.550 and Article 3, Division IV, Section 3.475 of the UDO, respectively.

DE C&O #06 Land Disturbance

A Land Disturbance Permit shall be obtained from the City if groundbreaking will take place prior to the issuance of a site development permit, building permit, or prior to the approval of the Final Development Plan / Engineering Plans.

DE C&O #07 Easements

All permanent off-site easements, in a form acceptable to the City, shall be executed and recorded with the Jackson County Recorder of Deeds prior to the issuance of a Certificate of Substantial Completion or approval of the final plat. A certified copy shall be submitted to the City for verification.

DE C&O #12 Cut & Fill

Any cut and / or fill operations, which cause public infrastructure to exceed the maximum / minimum depths of cover shall be mitigated by relocating the infrastructure vertically and / or horizontally to meet the specifications contained within the City’s Design and Construction Manual.

DE C&O #13 ADA Sidewalk Ramps

All ADA sidewalk ramps shall be constructed by the developer at the time the street is constructed.

DE C&O #14 Common Area Sidewalks

All sidewalks adjacent to a common area tract, unplatted land or any land where no structure is intended to be built, and is required, shall be constructed by the developer at the time the street is constructed.

Sanitary sewer analysis is currently under review by Water Utilities staff. Any recommendations concerning limitations on peak base flow from an industrial user shall be evaluated after a review of this report has been completed.

The sanitary sewer study was incomplete. The analysis shall include flows from existing pump station upstream of the site, as well as watershed downstream of the site. This analysis shall be extended to include the line(s) all the way to the west lake at Lakewood, just prior to entering the 30 inch line beneath the lake. Measured flow data is provided separately below for the pump station, as well as future build-out conditions for the future pump station(s).

Existing conditions: 14 million gallons per day (MGD) from the Tudor lift station upstream of the project. Anticipated flows within 10 years are 14 MGD from Tudor pump station, and 1.65 MGD from the Property Reserve, Inc. pump station #2 for a grand total of 15.65 MGD. Anticipated flows within 20 years are 14 MGD from the Tudor pump station, 1.65 from the Property Reserve, Inc. pump station #2, and 4.08 MGD from the Property Reserve, Inc. pump station #3.

Sanitary sewer analysis shall provide an analysis of the existing condition, the conditions within 10 years, and the conditions within 20 years. Each scenario shall be evaluated separately within the report.

As-builts may be utilized, or GIS records to perform the analysis described above.

The sanitary sewer analysis shall include all pumped flows contributing to the lines associated with this site, along with all drainage areas associated with the lines upstream and downstream of this site. It shall end at manhole #10-174 near the west lake at Lakewood.

Sanitary sewer analysis shall include diagrams of the drainage areas being analyzed, diagrams of the downstream and upstream contributers to flow, sanitary sewer lines being analyzed, profile views of the sanitary sewer lines downstream of the site, tables showing calculated flows, k vales, rainfall intensity, chart values, drainage area, time of concentration, and any other information necessary to support the conclusions and recommendations contained within the report.

Sanitary analysis discusses infiltration and inflow under Section 2.0 Methodology. The fourth sentence states the I&I is 0.381 cfs/acre using Figure 6501-3. Shouldn't this be 0.381 cfs? The chart presents I&I in cfs/acre, and our calculations and unit analysis yield 0.38 cfs rather than 0.38 cfs/acre.

Recommend the sanitary sewer analysis include the maximum peak base flow for the site within the conclusions and recommendations. As shown in the methodology section of the report, this value is 291,000 gallons per day. This figure shall be useful to a potential buyer to determine future allowances for industrial use.

Plan sheets were uploaded "one sheet at a time". For future submittals, please submit the Preliminary Plat as a single pdf multi-page document.

Sheet 1 of 4 "Preliminary Plat" sheet is illegible. It appears the document was folded to a point where a portion was not included, scanned, and uploaded, and portions of the document are missing near the fold.

Sheet 1 of 4 "Preliminary Plat" sheet is missing the ADA ramp across MacGuire at the location of the missing (i.e., folded) area on the sheet.

Storm drainage plan does not appear to include the 48 inch line entering the site from the southwest. In addition, it appears an open channel is planned between Lots 4/3 and 2/5. This open channel is also shown in an access easement and general utility easement. Why was this designed as an open channel? It would appear an enclosed undergound system would be better suited for this area. Why was the 48 inch pipe not shown? Why was a 30 inch pipe selected for the preliminary design between Lots 6 and 7? We realize this is a preliminary plan, but it does not appear realistic. Please re-evaluate and provide a more realistic design.

A wider easement is required for the 108 inch pipe contained within the northeast portion of the site. The 15 foot easement is not sufficient. The width of the easement should be increased by a minimum of 10 feet on the west side of the easement to accommodate the large pipe diameter.

A 42 inch pipe is shown along the west side of Lot 1. Why was this size selected? It would appear this pipe size is too small based on the upstream conditions. Please see previous comments concerning the lack of a realistic design to manage stormwater for the site. We realize this is a preliminary plan, but a realistic plan should be provided.

A 36 inch storm line is shown exiting Lot 2 to the northeast beneath the street. Why was this size specified? Please see previous comments concerning upstream conditions, and providing a realistic preliminary stormwater design.

Sanitary sewer manholes should be located at the centerline of roads. Please revise.

Utility sheet shows a 10 inch sanitary sewer from the site entering an existing 8 inch sanitary sewer. Our records indicate the existing downstream sanitary sewer at the west end of Maguire is a 10 inch rather than an 8 inch line. Was your evaluation based on a field survey? Was it based on as-built Record Drawings? If so, our Record Drawings indicate this line is a 10 inch.

Utility sheet shows a 10 inch sanitary sewer entering the existing manhole at an angle not allowed by the Design and Construction Manual. It shall be no more than a 90 degree deflection angle. It currently shows 110+/- degree deflection angle.

Water main along Maguire shall be looped to the existing water main on the west end of Maguire. Please revise.

Off-site grading activities appear to be shown on Lot 27, Lakewood Business Center on I-470 Plat K. This shall require the acquisition of suitable agreements with the adjacent property owner.

Miscellaneous Correction

Oil and Gas Wells. Please state whether or not there are active, inactive, or capped wells within the area. Refer to DNR Well Database and reference the site.

Miscellaneous Correction

Building Line. Please label the 20’ building line along all ROW frontages.

Miscellaneous Correction

Sidewalk. A 5’ sidewalk is required along the NE Hagan Rd frontages of all proposed lots.

Please see attached document in cityview for the proposed addresses at this time.

Application is incomplete in terms of required plans and reports. Please see requirements for a preliminary plat application, which shall include a separate utility plan (i.e., sanitary sewer and water line layout), separate grading plan, separate stormwater layout plan, sanitary sewer analysis (in report form) of the downstream system (as discussed during the pre-application meeting), and stormwater detention memorandum.

Review of City files show the existing basin north of the project was designed to manage increased peak stormwater flows for the project, based on criteria in existence at that time. The report is dated Nov. 14, 2009, and titled "Storm Water Management Report Regional Detention Ponds Lemone-Smith Property". Please reference this document in the stormwater memorandum. This document is also available at City Hall if a review is deemed necessary by the engineer.

Utility lines shall be labeled as to sizing and material type. This includes sanitary sewer lines and water lines.

If any other use than office/warehouse use is being proposed (such as industrial or manufacturing), a sanitary sewer analysis shall be required.

ADA ramps are shown at the intersection of Maguire Blvd. and Cargo Dr. using an outdated method. This method of constructing ADA ramps is no longer allowed. Turning space cannot be placed at the bottom of the ramp, and each ramp shall be mono-directional. Acceptable examples can be provided upon request.

Acquisition of an off-site easement or off-site agreement may be necessary to place the storm line to the north.

Miscellaneous Correction

Oil and Gas Wells. Please state whether or not there are active, inactive, or capped wells within the area. Refer to DNR Well Database and reference the site.

Miscellaneous Correction

Building Line. Please label the 20’ building line along all ROW frontages.

Miscellaneous Correction

Sidewalk. A 5’ sidewalk is required along the NE Hagan Rd frontages of all proposed lots.