I. RECOMMENDATION:
Staff is requesting City Council authorization to prepare plans, advertise bids and execute a City Engineering Task Order for the 2021 Annual Pavement Maintenance Project.
II. BACKGROUND:
The City budgets annually for chip, slurry and cape seal projects. However, in the last 2 years these treatments have not occurred. Over the course of the last (4) months public works crews have been working tirelessly crack sealing several streets throughout the City. Additional treatments such as chip and cape seals require more sophisticated equipment and time, therefore, the need to be bid out the work.
III. DISCUSSION:
This project involves placement of asphalt rubber cape seal on twenty-six street segments located within the City of Coalinga. The street segments were selected based on their PCI or Pavement Condition Index which was evaluated in 2019 utilizing the City's pavement management program. PCI is a numerical rating (0 to 100) of the pavement condition based on the type and severity of distresses observed in the pavement. Roadways with ratings of 0-24 are categorized as Very Poor, 25-49 as Poor, 50-69 as Fair, 70-79 as Very Good, and 90-100 as Excellent. For this project, the median score is 50, which barely tips into the fair category.
Rubberized cape seal surface treatment is a two-step surface treatment. First, rubberized chip-seal surface is applied, and then a slurry seal is applied. The blending of ground rubber and asphalt cement to replace the typical asphalt binder in the chip seal process greatly enhances the elasticity, flexibility, and longevity of resurfaced streets. Rubberized cape seals cost approximately 20% more than traditional cape seals; however, they can be applied to streets with lower PCIs, and they can extend the life of existing pavement for 10+ years, versus the 5+ that you receive with traditional.
Included in the project scope is the restriping of all street segments, as well as the multi-use trail adjacent to Phelps Avenue. Striping will occur approximately two weeks after the surfacing.
A full list and exhibit of the streets receiving treatment have been attached to this report in addition to the cost estimate.
In addition to the scope of work, staff is requesting that the City Council authorize the Assistant City Manager to execute a construction engineering task order with the City Engineer in the amount of $16,200 to prepare bidding documents, bid the project and provide construction support.
IV. ALTERNATIVES:
None at this time.
V. FISCAL IMPACT:
In the FY21 budget, the City has budgeted $500,000 for the annual Chip and Cape Seal Project out of the Measure C - Street Maintenance, however in an effort to maximize scale and entertain more competitive bidding staff has prepared a project scope with an engineers cost estimate of $786,200.00. If authorized staff will reduce its budget for FY22 to offset the increased amount of funds from FY21 and reassess fund availability when the 2022 project is being developed. | | |