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of the pond is located on private property). F. Trails The public and City staff identified additional trail and retaining wall scope through the feasibility study process that should be considered for addition to delivery of this project. Trail conditions adjacent to the project area were evaluated in response. There is an existing bituminous trail system that meanders through various portions of the project. The trails are constructed of bituminous pavement and are generally in a deteriorated condition with significant surface delamination and cracking throughout. The trail connections to the existing streets do not include pedestrian ramps. Portions of the trail system include notably steep grades and there are a few locations that include handrails along the trail. A bituminous curb exists along the west side of the trail, adjacent to 1503 Briarknoll Drive, assumedly to manage drainage patterns. A modular block retaining wall exists along the south side of the trail, approximately behind 1479 Colleen Avenue, which is beginning to tip and is in poor condition. IV. PROPOSED IMPROVEMENTS A. Streets There are two street pavement rehabilitation methods proposed for this project that are based on roadway age, surface deterioration, OCI rating, and subgrade soils. Streets will be rehabilitated with either a full depth reclamation or mill and overlay based on recommendations from the geotechnical report. Full depth reclamation is a process that pulverizes the existing roadway pavement and mixes it with the existing underlying aggregate material to create a new suitable aggregate base material. The reclaim material is graded and recompacted for the proposed roadway with excess material being hauled away and 4-inches of new bituminous pavement is installed in two lifts. Mill and overlay is a process that grinds off the top layer of bituminous pavement and 2-inches of new wear course bituminous pavement is installed over the remaining base bituminous pavement. Based on proposed watermain improvements identified below, James Avenue will require full depth reclamation to accommodate the watermain replacement. This work will also necessitate the removal and replacement of the entire western curb line and select sections of the eastern curb line to accommodate service replacements. The watermain work will require salvaging the reclamation material before installing the new watermain and reinstallation and preparation of the salvaged reclamation material for use as aggregate base in the new street section. Therefore, the end result of the street improvements on James Avenue will be the same as a reclamation and overlay, putting it on the same pavement life cycle as the other full depth reclamation roadways in the neighborhood. Both rehabilitation methods will include spot curb and gutter replacements, select base pavement repairs, and casting or valve box adjustments to the new pavement grade. The spot curb and gutter replacements will be utilized to address sunken or severely damaged curb throughout the project area that inhibits proper drainage. No driveway work is proposed, except as necessitated by spot curb replacements. All disturbed boulevard areas will be restored with 5-inches of topsoil and new sod or seed and blanket. Based on the observed weathering and deterioration found in the pavement cores and proposed utility improvements, a 9-inch full depth reclamation is proposed for the following streets: • Norma Avenue from Dawn Circle to Briarknoll Drive • Briarknoll Drive from Norma Avenue (west) to Norma Avenue (east) • Norma Avenue from Briarknoll Drive to Colleen Avenue Prepared by: Bolton & Menk, Inc. PROPOSED IMPROVEMENTS 2024 PMP Street & Utility Improvements I OT1.130168 Page 4