PRESENTER: Presenter
Scott McClelland, Assistant Transportation and Capital Improvements Director
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SUBJECT: Title
Approval of a contract with Pesado Construction Company for the construction of the Bergfeld Avenue Stormwater Filtration System and authorization for the City Manager to execute change orders up to the contingency amount.
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DEPARTMENT: Transportation and Capital Improvements
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COUNCIL DISTRICTS IMPACTED: District 1
BACKGROUND INFORMATION:
The City of New Braunfels has proactively implemented a Watershed Protection Plan for the Dry Comal Creek and Comal River watershed. As part of this effort, the potential effectiveness of structural stormwater Best Management Practices (BMPs) (in-pipe filters, detention basins, etc.), for reducing bacteria pollution from stormwater runoff was evaluated, and the stormwater outfall located at the northwest terminus of Bergfeld Avenue was recommended for the pilot. The location was selected based on the relative E. coli loadings calculated, the high mean E. coli concentration measured, and constructability considerations.
The stormwater outfall consists of three 60-inch concrete pipes that discharge into an earthen swale that ultimately flows into the Dry Comal Creek. For this pilot study, an in-pipe filtration system will be installed in-line on one of the stormwater pipes. Access points to the storm drain upstream and downstream of the filtration system are also to be installed to allow for collecting samples of stormwater during rain events. This sampling and the subsequent water quality testing can help determine if this type of system is an effective method for removing bacteria pollution that can be constructed on a larger scale around the city in the future.
The City issued a competitive sealed proposal for construction on August 8, 2024, and received three proposals on September 18, 2024. The project team selected Pesado Construction Company as the best value with a proposed cost of $320,352, including a 10% contingency bringing the construction total cost to $352,387.
ISSUE:
Reducing elevated levels of biological pollutants found in the Dry Comal Creek and Comal River.
STRATEGIC PLAN REFERENCE:
☐Economic Mobility ☐Enhanced Connectivity ☐Community Identity
☐Organizational Excellence ☒Community Well-Being ☐N/A
This project supports the City’s Watershed Protection Plan for the Dry Comal Creek and Comal River
FISCAL IMPACT:
This project has 100% funding from a watershed protection plan implementation grant provided by the Texas Commission on Environmental Quality and the Environmental Protection Agency and is a budgeted FY 2025 expense in the EAHCP/WPP special revenue fund.
Recommendation
RECOMMENDATION:
Approval of a contract with Pesado Construction Company for the construction of the Bergfeld Avenue Stormwater Filtration System and authorization for the City Manager to execute change orders and project expenditures up to the contingency amount.