Lee's Summit

Awaiting resubmittal of pavement memorandum with seal and revision to recipient.

Payment of Engineering Plan Review and Inspection Fee prior to formal approval.

Miscellaneous Correction

Water meters greater than 2" must be installed in engineered pits. Provide complete engineered design for any water meter pits serving water meters greater than 2". 1/22/2026 - Plans refer to detail 44/C803 but that detail is for maximum 2" meter. Provide complete engineered design for vault.

Please see previous applicant letter concerning the pavement design. In lieu of the standard design shown in the Unified Development Ordinance (UDO), an alternate design was presented based on a geotechnical report. However, it does not appear the geotechnical report followed the parameters given to you by separate document. In addition, a waiver request was provided, but not needed. If a geotechnical report can demonstrate the equivalency of the alternate pavement design using the parameters given, it can be approved administratively rather than through the waiver process.

Are you proposing to remove the existing City manhole 39-245 and replacing with a new manhole to the east? If so, provide sufficient callouts and notes on Sheet C500. If not, the plans do not appear to make sense on the plan view, although it appears satisfactory on the profile view.

A revised cost estimate may be required if there are differences in the final design versus what is shown in the estimate.

Code Statement

All issues pertaining to life safety and property protection from the hazards of fire, explosion or dangerous conditions in new and existing buildings, structures and premises, and to the safety to fire fighters and emergency responders during emergency operations, shall be in accordance with the 2018 International Fire Code. Acknowledged

UST's

The installation of underground fuel storage tanks (UST’s) shall comply with the 2018 International Fire Code and the requirements of the Missouri Department of Natural Resources. Acknowledged

Hazmat

IFC 105.6.20 - A Hazardous materials permit is required for the using, dispensing, transporting, handling, and/or storing of extremely hazardous substances. “Extremely Hazardous Substances (EHS) Facilities” are defined as facilities subject to the provisions of Superfund Amendments and Reauthorization Act of 1986 (SARA TITLE III), Section 302, for storing, dispensing, using, or handling of listed chemicals in excess of their threshold planning quantities (TPQ). See amended Section 5001.4 of the 2018 International Fire Code. A Hazardous Materials Permit will be required if the quantity of gasoline exceeds the Threshold Planning Quantity (TPQ) for retail sale. How much gasoline will be on site? Acknowledged

Geotechnical Report: Pavement design should have been based on parameters supplied by the City to establish equivalency or better to the Unified Development Ordinance (UDO) standard design. Please contact me for these specific design criteria.

Sheet C500: a. Missouri American Water is still referenced in the notes. Remove and replace with "City of Lee's Summit Water Utilities". b. Backflow vault shall be drained at the sump, either by a small pipe to daylight, or a permanent sump pump. Show with sufficient detail on the plan view how this will be achieved. c. A cut-in tee is required at the 4 inch domestic line connection to the public main, not a wet tap. d. A special design is required for the 4 inch water meter (i.e., all meters greater than 2 inches). Please contact me for a template to modify for your 4 inch meter. e. Proper notation on the plans shall be provided for the special water meter discussed above f. Ensure copper is called-out from the main to the meter, and a miniumum of ten feet beyond the meter. Ensure this is shown on plan view. g. Provide callouts for the private water ines beyond the limits discussed in the above comment. All domestic water lines shall be shown in reference to sizing and type, and shall comply with building code. h. Do you really need a 4 inch compound water meter? Cost including sanitary impact fee will be approximately $220,000 for a 4 inch compound meter. i. profile view of the 8 inch private fire line was not provided. j. butterfly valves on the existing public water main were not shown. These valves shall be installed on either side of the tee. k. butterfly valves were shown in the incorrect location. As shown, these are located near the FDC and do not make sense. Remove these valves, and shown them on either side of the tee on the existing public main. l. domestic line to building ends abruptly without showing where it will be connected to building

Sheet C501: a. Label the existing manhole with the City manhole number.

Sheet C600: a. 3 inch orifice called-out on typical section view for northwest basin does not match the stormwater report. Stormwater report "pond setup table" shows a 4 inch orifice, not a 3 inch orifice. b Elevation of the 8 foot weir for northwest basin does not match what is shown in the pond setup table. c. Emergency spillway elevation does not match what is shown in the pond setup table for northwest basin. d. Note was incomplete in terms of the required information on the as-built for the detention basins. In addition to storage, all other aspects such as grading, elevations of top of embankment, elevation of emergency spillway, elevation of weirs and orifices shall be provided. Revise the note as appropriate. e. The 8 foot weir on the northwest basin does not appear to have been modeled properly. It will act as an orifice during high-flow events. It would appear it should have been placed in the "culvert/orifice" category with a rise in inches and a span in inches. f. The 8 foot weir on the southwest basin does not appear to have been modeled properly . This should have been placed under the "culvert/orifice" category with a rise in inches and a span in inches. g. Emergency spillway crest elevation does not match the pond setup table.

Sheet C601: a. The same comments apply to the 8 foot weir shown on the pond setup table. It would appear this was not modeled correctly, and should have been placed in the culvert/orifice category with a span and a rise in inches due to the fact this weir will also act as an orifice during high-flow conditions. b. orifice size on plans does not match what is shown in the pond setup table. c. Please go through the elevation callouts on the plan view and ensure they match the pond setup table within the appendix of the stormwater report.

Sheet C301: a. ADA-accessbile detail across the new commercial entrance showed some cross-slopes greater than 1.5%. Please correct. b. Provide cross-slope callouts no greater than 1.5% across the ADA-accessible route across the new commercial entrance.

A SWPPP is required prior to formal approval.

An itemized cost estimate of the sitework is required prior to formal approval.

PLATTING. The subject property is currently going through the minor plat approval process under Appl. #PL2025336. No building permit shall be issued for the subject development until such time as the associated plat is approved, recorded with the County, and the requisite number of copies of the recorded plat are provided to the City.

Miscellaneous Correction

wm pit details - 2" and larger Dom water connection to building separate taps for fire and domestic required?

Miscellaneous Correction

Water meters 2" and smaller are required to be installed by our standard Water Department details. Replace Details 43 & 44 on C803.

Miscellaneous Correction

Water meters greater than 2" must be installed in engineered pits. Provide complete engineered design for any water meter pits serving water meters greater than 2". 1/22/2026 - Plans refer to detail 44/C803 but that detail is for maximum 2" meter. Provide complete engineered design for vault.

Miscellaneous Correction

Specify location of domestic water service entry into building.

Miscellaneous Correction

Provide separate water main taps for Fire Line and Domestic. (unless approved by our Engineering Department)

Miscellaneous Correction

Design of light pole base must be sealed/signed by engineer of record.

Code Statement

All issues pertaining to life safety and property protection from the hazards of fire, explosion or dangerous conditions in new and existing buildings, structures and premises, and to the safety to fire fighters and emergency responders during emergency operations, shall be in accordance with the 2018 International Fire Code.

FDC

IFC 903.3.7 - Fire department connections. The location of fire department connections shall be approved by the fire code official. Connections shall be a 4 inch Storz type fitting and located within 100 feet of a fire hydrant, or as approved by the code official. The FDC exceeds 100 feet to a fire hydrant.

UST's

The installation of underground fuel storage tanks (UST’s) shall comply with the 2018 International Fire Code and the requirements of the Missouri Department of Natural Resources.

Hazmat

IFC 105.6.20 - A Hazardous materials permit is required for the using, dispensing, transporting, handling, and/or storing of extremely hazardous substances. “Extremely Hazardous Substances (EHS) Facilities” are defined as facilities subject to the provisions of Superfund Amendments and Reauthorization Act of 1986 (SARA TITLE III), Section 302, for storing, dispensing, using, or handling of listed chemicals in excess of their threshold planning quantities (TPQ). See amended Section 5001.4 of the 2018 International Fire Code. A Hazardous Materials Permit will be required if the quantity of gasoline exceeds the Threshold Planning Quantity (TPQ) for retail sale. How much gasoline will be on site?

A SWPPP is required prior to formal approval.

Sheet C500: a) Water meter and fire line (i.e., the 8 inch line shown within the boundaries of the project which serve both the Costco warehouse and the service station to the southeast) are not shown properly, The 8 inch fire line shall be separate from the domestic lines, and shall be connected with a cut-in tee to the water main. A backflow vault with backflow assembly shall be installed on the fire line as close as possible to the water main (6 feet if possible), and outside any easements. A gate valve shall be installed prior to the backflow vault which denotes the end of public service. b) Separate water meters shall be installed for the Costco warehouse and the service station to the southeast, and shall be tapped to the main separately. Meters should be contained within a public easement. It is possible for you to provide domestic water service to the service station to the southeast of the project by installing a meter near the new water main along Oldham Pkwy, to eliminate the long distance run, c) The backflow shall be provided outside the building in a vault due to the distance being greater than 50 feet from the main to the building. d) specify the sizing and type of domestic water meter. The City has displacement meters and compound meters. e) Two (2) new 12 inch butterfly valves are required on the main near the fire line connection point. f) a profile view of the 8 inch fire line should be provided, and should include callouts such as C900 pipe, length of segments, etc. g) label the existing sanitary sewer manhole A.1(0) as City manhole #39-245. h) Label all fire line bends and the magnitude of the bend (e.g., 11.25 degree bend, etc.). i) Label domestic water line size and line type such as copper or other approved material. Provide sufficient notation that copper be used from the main to the meter, and a minimum of 10 feet beyond the meter. j) It is unclear where the domestic line serving the Costco warehouse is located, Ensure it is shown and is separate from the fire line. k) City of Lee's Summit standard detail for meter well was missing. The City does not recognize or approve the standard details shown on Sheet C803. k) Note 15 references Missouri American Water. The City of Lee's Summit should have been referenced. l) Is there going to be a separate irrigation meter? If so, will the backflow be provided within the building or outside the building?

Sheet C600 and Sheet C601: a) For each basin shown, provide the design storage for the 100 year event. b) It is assumed the dashed lines shown around the periphery of each detention basin represents the 100 year clogged and 100 year design elevations. Please label as such c) The southeast detention basin does not appear to be discussed in the stormwater report. Is this the "east basin" discussed in the report? Why was there no discussion that the east basin consists of the smaller detention basin to the north? Please clarify within the report, and ensure naming conventions of the basins within the report match what is shown on the plans d) "Spillway" is called out on the detention basins when "emergency spillway" should have been called-out. e) contours on the detention basins do not seem to indicate any emergency spillways being constructed, despite labeling to the contrary. Please correct the contours to show the location of the emergency spillways, and label. f) Where are the access points to the outlet structures located? Show their location and ensure it matches the ladder location. g) Show ladder locations within outlet structures

Stormwater Study: a) "Costco FDP Stormwater Drainage Study" dated Dec. 2, 2025 discussed the "East Basin". Does this include the southeast and east basin? Why are the names of the basins within the report not reflective of what is shown on the plans? b) 100 foot emergency spillway is called-out on the east basin (presumbly the southeast basin), but 50 feet is shown for this basin on the plan view. Please reconcile. c) is there an emergency spillway on the smaller "southeast basin 2" detention basin? d) Narrative of the study discussed a 30 inch effluent pipe for the east basin. Plans show a 42 inch pipe. Please reconcile e) pond setup tables were missing which show the orifice and weir sizing, elevation, stage/storage, and other information provided by Autodesk Hydraflow Hydrographs. No further review was conducted on the sizing, elevations, stage/storage of the detention basins. This information is normally provided within the appendix along with the other Hydraflow output.

General Comment: Missing erosion and sediment control plan.

Sheet C800: a) Pavement design does not meet the Unified Development Ordinance (UDO) in terms of asphalt thickness and subgrade design. Requirements are 2 inch KCMMB surface course over 3.5 inches KCMMB base course over 6 inches aggregate over geogrid or chemically-stabilized subgrade. This pertains to what is described in the plans as "light duty pavement". Heavy duty pavement as described in your plans has the same requirements, except the base course is 4.5 inches KCMMB mix. Please correct. b) In lieu of this pavement design, a geotechnical study can be submitted for a specific pavement design. If this option is desired, contact me for specific design parameters. c) Please use the City standard detail for the wye connection. The City does not recognize the detail you are showing.

Sheet C801: a) Pavement subgrade design should extend a minimum of one (1) foot beyond the back of curb. This requirement would pertain to detail #17 on this sheet. This helps to mitigate rotation of the curb and gutter.

Sheet C803: a) Detail #40, #41, #42, #43 and #44 are not recognized by the City. Please provide City standard details for these features

Parking lot was missing the ADA-accessible stall plan, including elevation and slope callouts to ensure they meet ADA standards,

ADA-accesible ramp and ADA-accessible route plan across new commercial entrances was missing. A generic reference to the City standard detail is not sufficient. A site-specific plan for each is required, including the min. 5 foot wide ADA-accessible route across each commercial entrance. Ensure a max. 1.5% cross-slope is shown for all sidewalks and routes, and a max. 7.5% design running slope for the ADA-accessible ramps. Provide truncated domes for all.

Sidewalk appeared to be missing along Oldham Pkwy.

The ADA-accessible route to the building(s) from the ADA-accessible stalls shall be shown on the ADA-accessible plan.

Are any retaining walls being proposed?

An itemized and sealed cost estimate for the sitework is required prior to formal approval.

PLATTING. The subject property is unplatted. No building permit shall be issued for the site until such time as the subject site is platted. The property can be platted via a final plat or a minor plat. The final plat process is an approximately 3 month process that requires Planning Commission and City Council approval. Final plats can include the dedication of public right-of-way, which will be needed for the extension of SE Oldham Pkwy. The minor plat process is an approximately 6 week process that is administratively approved by staff. Please note that a minor plat cannot be used to create more than 3 lots, nor can a minor plat be used to dedicate any public right-of-way. However, right-of-way may be dedicated via a separate document and then followed behind by a minor plat to reflect the already-dedicated right-of-way when the abutting lot is platted via the minor plat.

STREETS. Revise the name of Oldham Road to SE Oldham Pkwy.

SETBACK LINE. Label and dimension the 20' building and parking lot setback along the site's SE Oldham Pkwy frontage.

EASEMENTS. Show, label and dimension any proposed easements on the site.

MECHANICAL SCREENING. Submit sight line drawings to demonstrate that the RTUs will be hidden from view with the proposed parapet heights.

ADDRESSING. The following addresses shall be assigned for the site: 10 SE Oldham Pkwy (the warehouse building); and 20 SE Oldham Pkwy (the fuel station).

Occupancy will not be granted until all public Improvments have been completed.

Miscellaneous Correction

wm pit details - 2" and larger Dom water connection to building separate taps for fire and domestic required?

Miscellaneous Correction

Water meters 2" and smaller are required to be installed by our standard Water Department details. Replace Details 43 & 44 on C803.

Miscellaneous Correction

Water meters greater than 2" must be installed in engineered pits. Provide complete engineered design for any water meter pits serving water meters greater than 2".

Miscellaneous Correction

Miscellaneous Correction

Specify location of domestic water service entry into building.

Miscellaneous Correction

Provide separate water main taps for Fire Line and Domestic. (unless approved by our Engineering Department)

Miscellaneous Correction

Design of light pole base must be sealed/signed by engineer of record.

Code Statement

All issues pertaining to life safety and property protection from the hazards of fire, explosion or dangerous conditions in new and existing buildings, structures and premises, and to the safety to fire fighters and emergency responders during emergency operations, shall be in accordance with the 2018 International Fire Code.

FDC

IFC 903.3.7 - Fire department connections. The location of fire department connections shall be approved by the fire code official. Connections shall be a 4 inch Storz type fitting and located within 100 feet of a fire hydrant, or as approved by the code official. The FDC exceeds 100 feet to a fire hydrant.

UST's

The installation of underground fuel storage tanks (UST’s) shall comply with the 2018 International Fire Code and the requirements of the Missouri Department of Natural Resources.

Hazmat

IFC 105.6.20 - A Hazardous materials permit is required for the using, dispensing, transporting, handling, and/or storing of extremely hazardous substances. “Extremely Hazardous Substances (EHS) Facilities” are defined as facilities subject to the provisions of Superfund Amendments and Reauthorization Act of 1986 (SARA TITLE III), Section 302, for storing, dispensing, using, or handling of listed chemicals in excess of their threshold planning quantities (TPQ). See amended Section 5001.4 of the 2018 International Fire Code. A Hazardous Materials Permit will be required if the quantity of gasoline exceeds the Threshold Planning Quantity (TPQ) for retail sale. How much gasoline will be on site?