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Managing Tomorrow’s Resources Today MEMORANDUM Page 8 of 11 RWC_Memo_19Dec2024 The City’s design standard or Traffic Index (TI) for each category of streets could not be provided. Lacking specific design standards for the City, we utilized the most common design standards in modern pavement design guidelines from other similar local agencies, however we note that older streets in the City's road network were likely not built to this standard. We want to point out that our assumption here is conservative, not aggressive. Streets built to a lower standard can withstand less vehicle traffic loading. Assuming a lower standard of design would mean a larger percentage of the overall loading placed on the streets would be attributable to Recology’s collection vehicles. Therefore, Recology would be responsible for a greater share of the street impact costs incurred by the City. The assumption of common design standards resulted in an estimated residential street TI of 5.0 or 7,161 ESALs. Collector streets were estimated to have a TI of 7.0 or 121,021 ESALs. Arterial streets were estimated to have a TI of 9.0 or 1,000,000 ESALs. HF&H collected from Recology vehicle weights and profiles for the various vehicles being studied in this analysis. Each vehicle type was modeled based on weight, vehicle specifications, axle profile, and average payload. This modeling produced an average ESAL for each pass of each vehicle type, which was then used to assess the direct impact of each vehicle trip by each vehicle type. The City provided its Pavement Technical Assistance Program FY 2021-22 Final Report. The Report specified five funding scenarios to address the City’s plans for preventative maintenance of its roads. Two scenarios of spending were analyzed: one scenario covered the anticipated annual expenditure of $4.0 million per year, commensurate with the City’s typical paving maintenance budget, and the second scenario analyzed the targeted annual level of necessary funding, $9.6 million per year, to upgrade all City streets to a condition where only future preventative maintenance would be required. The annual budgets were allocated among residential, collector, and arterial streets in proportion to the percentage of lane miles for each of those street classifications. Refer to Figure 6 for the allocation by street classification. The residential, collector, and arterial street portions of the Average Annual Expenditures were allocated among the various vehicle types in proportion to the calculated impact of each vehicle type, as determined above. Figure 6. City Lane Mileage by Street Classification Road Centerline % of Type Miles Total Current Funding Residential 177 50.8% Collector 56 16.0% Arterial 116 33.2% Total 349 100.0% Target Funding Residential 177 50.8% Collector 56 16.0% Arterial 116 33.2% Total 349 100.0% ATTY/RESO.0003/CC RESO 2025 SOLID WASTE COLLECTION RATES & ADOPTING FRANCHISE FEE STUDY - EXHIBIT B REV: 01-14-25 MI Page 8 of 11