COUNCIL COMMUNICATION

Transcription

1 COUNCIL COMMUNICATION TO: FROM: DEPARTMENT: Mayor and Council Larry Nimmo Public Works DATE: June 19, 2017 SUBJECT: Award Contract for 2017 Chip Seal Program DESCRIPTION: Award Contract for 2017 Chip Seal Program RECOMMENDATION: Staff recommends Council award, by motion, a contract to Foothills Paving and Maintenance, Inc., in the amount of $321, to complete the 2017 Chip Seal Program. PREVIOUS COUNCIL ACTION: Last year Council approved the 2016 Chip Seal project based on the Cherry Hills Village (CHV)/City of Englewood joint Cape Seal project on Clarkson from Belleview to 285. With Council approval, we would again like to piggy-back off the 2017 Cherry Hills Village contract for the 2017 Chip Seal Project. SUMMARY: Recommendations provided to staff by our pavement consultant indicate these treatments should extend the Remaining Service Life (RSL) between 5 to 7 years. The three products proposed are a Single 3/8 Chip Seal, a Cape Seal (3/8 Chip with a ¼ Slurry seal) and a ¼ Slurry Seal. Determination of which product will be installed is based on the condition of that section of roadway, and type of roadway (residential, minor collector, or arterial). ANALYSIS: The Pavement Management report for the City of Englewood street system, completed by iworq in 2016, reveals that 66% of the streets fall between 6 and 10 years of remaining service life (RSL), out of a 20 year life expectancy. To address this low RSL, the report s recommendations emphasize the importance of increasing the use of alternate seal treatments (i.e. chip and slurry) as rehabilitation techniques to address the low RSL, especially useful on residential streets. The primary advantage of these seal treatments revolves around an increase in the number of streets (or blocks) completed annually. Historically, from the years 1991 through 2008, Micro-Surfacing was used as this surface treatment, completing an average of 81 blocks per year. From 2009 to 2015 the City suspended the use of seal treatments, employing only the use of roto-mill and overlays. Based on the report s recommendations, conversations with other municipalities, and industry standards, our pavement management strategy now involves incorporating seal treatments with a goal of completing 10% of the roadway system each year, per the iworq report.

2 As this is the second year of the product evaluation phase, staff again employed the strategy of piggybacking off the existing Cherry Hills Village contract for work. The typical configuration of the CHV road system, long blocks with single access points ending in a cul-de-sac, prohibit the use of anything but one of these seal treatments. The chip seal project is a stable of their road maintenance strategy, as they have had years to develop and perfect their specifications on these treatments, which is staff s rationale behind the piggyback decision. Foothills Paving and Maintenance, the low bidder for this year project in CHV, has agreed to extend the awarded CHV Project No unit prices and specifications to the City of Englewood. The contractor agreed to lower their unit prices based on quantities for the proposed list of streets as well as working conditions in Englewood; our project was larger than CHV, and the grid configuration of our streets results in lower traffic control costs. FINANCIAL IMPLICATIONS: Estimated Construction Cost for the 2017 Cape Seal Project: Total Project Cost $ 321, Funding is available in the Road and Bridge account. ($300,000 scheduled from Slurry Treatments and $21, from Roto-Mill and Overlay). ATTACHMENTS: Contract

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