A resolution approving a proposed Amendment to a Master Purchase Order between…
Denver is adding $2. 25M to a contract with Vance Brothers for tack oil at the Denver Asphalt Plant, bringing the total to $3M to keep road paving operations running.
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The Civitus brief
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Plain English
Denver is adding $2.25M to a contract with Vance Brothers for tack oil at the Denver Asphalt Plant, bringing the total to $3M to keep road paving operations running.
Why it matters
The Denver City Council is considering an amendment to an existing purchasing agreement with Vance Brothers, LLC, a supplier of tack oil, a material used to bond asphalt layers together during road paving. The amendment adds $2,250,000 to the contract, raising the total value to $3,000,000, with no change to the contract's duration. The funds support operations at the Denver Asphalt Plant, which maintains city roads across all neighborhoods.
Who it affects
- Denver residents
- Denver Public Works employees
- Road construction contractors
- Vance Brothers LLC
- Asphalt
- Road materials suppliers
The case for and against
The case for
- 1Maintaining an adequate supply of tack oil is essential for uninterrupted road maintenance, protecting Denver's infrastructure and public safety across all neighborhoods.
- 2Approving the amendment through the existing MPO is administratively efficient, avoiding the time and cost of a new competitive procurement process for an already-vetted supplier.
- 3Continued investment in road materials preserves long-term pavement quality, potentially reducing more costly full road reconstruction in the future.
The case against
- 1The contract value is increasing by 300 percent over the original amount, raising concerns about whether the original estimate was accurate and whether oversight of materials forecasting is adequate.
- 2Concentrating a $3,000,000 purchase with a single vendor limits competitive pricing pressure and may not represent the best use of taxpayer funds.
- 3The resolution provides no public explanation for why tack oil needs increased so dramatically, leaving residents and council members without full context to evaluate the amendment.
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Deeper context
Long-form analysis, legal background, and source material
Read analysisAnalysis · Sage analysis · Long read
Sage Analysis
This resolution authorizes an increase to an existing Master Purchase Order (MPO SC-00010213) between the City and County of Denver and Vance Brothers, LLC, a company specializing in road construction materials. The specific product covered is tack oil, also known as tack coat or bituminous tack coat, which is a liquid asphalt emulsion applied between pavement layers to ensure proper bonding. Without adequate tack oil supply, road repaving and maintenance projects cannot be completed to standard, potentially leading to premature pavement failure. The fiscal impact is straightforward: the city is committing an additional $2,250,000 in public funds to this supplier, bringing the total contract value from $750,000 to $3,000,000. This is a significant increase of 300 percent over the original contract amount, which raises reasonable questions about why demand or costs were underestimated when the original MPO was established. No changes to the contract length are included, meaning the city needs considerably more material within the same timeframe originally planned. The constitutional and legal basis for this action rests in Denver's home rule authority as a city and county under the Colorado Constitution, which grants Denver broad powers to manage its own procurement and infrastructure spending. City Council approval is required for contract amendments of this size, providing a check on executive branch spending authority. Stakeholders directly affected include Denver residents who rely on well-maintained roads, city transportation and public works employees who operate the asphalt plant, and Vance Brothers, LLC, which secures a substantially larger revenue commitment. Indirectly, contractors and construction firms working on Denver road projects depend on a consistent asphalt supply chain. The timeline is notable: the committee approved the filing on August 6, 2025, with the last scheduled Council review meeting set for September 8, 2025, suggesting this amendment is being processed on a relatively routine schedule. The absence of a listed latest action indicates the resolution is still working through the legislative process.
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AI analysisCivic explanation, not a government record
The original Master Purchase Order was set at $750,000, and this amendment triples it to $3,000,000, a gap that signals either a significant forecasting failure or an unexpected surge in road maintenance demand. The Council's September 8, 2025 review deadline is the critical moment when elected representatives must demand a clear accounting of why the original estimate was off by $2,250,000.
Source: official record
The Civitus brief, in full
The Denver City Council is reviewing a resolution that would increase the city's purchasing agreement with Vance Brothers, LLC from $750,000 to $3,000,000 for tack oil, a liquid asphalt bonding material used at the Denver Asphalt Plant. Tack oil is applied between layers of pavement during road repaving to ensure the layers adhere properly. The amendment adds $2,250,000 to the existing contract without extending its duration, meaning the city expects to consume significantly more of this material within the same original time period. Support for the amendment comes from Denver's public works and transportation infrastructure administrators, who argue that a consistent supply of tack oil is necessary to keep road maintenance projects on schedule across all parts of the city. Proponents view the amendment as a practical administrative step that avoids the delays and costs of launching an entirely new competitive bid process for an already-approved and active supplier relationship. Critics of the amendment, while not formally organized in public opposition at this stage, may point to the scale of the increase as a transparency concern. A 300 percent jump over the original contract value invites scrutiny about whether city planners accurately forecasted material needs and whether a single-vendor arrangement at this price level offers Denver taxpayers the most competitive deal available in the market. For ordinary Denver residents, the practical effect of approving this amendment would be the continued operation of the city's asphalt plant and its road paving programs, which affect street quality in every neighborhood. If the amendment is not approved, the city could face delays in road maintenance projects that depend on tack oil supplies. The Council is expected to take up the matter no later than its September 8, 2025 meeting.