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Prepared by: Bolton & Menk, Inc. PROPOSED IMPROVEMENTS 2026 PMP Street & Utility Improvements ǀ 25X.137753 Page 6 In areas of thinner pavement section, stockpiling of the reclaim to allow for approximately 2-inches of additional subgrade excavation and replacement of the reclaim material to ensure a 6-inch reclaim aggregate base section beneath the bituminous pavement may be necessary. However, the specific limits of these potential areas will not be known until they are under construction for evaluation and will need to be addressed during construction operations, if necessary. See Figure 1 in Appendix A for the proposed project layout identifying the limits of each rehabilitation method. Sanitary Sewer Based on the existing sewer pipe age, material type, and televising results, the existing sanitary sewer was found to be in generally good condition. There are a few select defects that are proposed to be rehabilitated as part of the project by means of Cured In Place Pipe (CIPP) sewer lining, sewer pipe grouting, and spot open cut pipe replacement. Most of the proposed sanitary rehabilitation methods are trenchless which will not disturb the above ground infrastructure as all access to the sewer is through existing manholes along the pipe and all services or laterals will be reopened robotically from within the pipe. All sanitary sewer manhole castings within the project areas will be replaced and installed to final grade to provide a smooth/drivable street surface in conjunction with the street resurfacing portion of the project. This work will also include the replacement of all concrete adjustment rings and the installation of an external chimney seal for each applicable manhole structure to reduce inflow of stormwater into the sanitary sewer system. Additionally, “painted on” internal chimney seals will be installed to mitigate deterioration of the concrete adjusting rings and mortar to reduce the need for long term maintenance. No work on structures outside of the street pavement is proposed, unless otherwise identified on the identified utility improvements figure or those identified to be trenchless improvements. City staff completed an inventory of the height of concrete adjusting rings on each sanitary manhole throughout the project area. Those manhole structures identified to have 16- inches of rings or more will be reconstructed, which is the process of removing the top cone section, adding a 1-ft barrel section to the structure, then replacing the cone section. See Figure 5 and Figure 6 in Appendix A for the proposed utility improvements. Watermain Based on the existing watermain pipe age and size, the existing watermain was found to be in generally good condition. Proposed watermain improvements include relocation of the watermain on south side of CSAH 96, approximately under the existing curb line. The existing will be abandoned in place and the new watermain will be located approximately 20-ft south, to maintain a 10-ft separation from the existing sanitary sewer that runs parallel. The watermain will be replaced in-kind with 6-inch DIP. All water service lines connected to this segment of watermain are proposed for replacement from the watermain to the property line with new 1-inch diameter copper pipe to individual residences. Curb stops and boxes will be installed at the ROW where the new service pipe connects to the existing service pipe. Constructability will be further evaluated during final design to mitigate impacts to adjacent retaining walls. This may necessitate connecting to the existing water service prior to the retaining walls and potentially a second curb stop on the same service line. Beyond this segment of watermain replacement, water system improvements will include addition of a new hydrant, addition of a new gate valve, replacement of select hydrants, replacement of select gate valves and boxes, and adjusting the remaining gate valve boxes DRAFT