Bioretention_Specs.pdf
PDF 50 KB Posted
- Attached to
- Route 238 Landscape Maintenance
- Solicitation number
- 26-005
- Issued by
- Alameda County, Hayward City, California
About this file
This is a specification document for bioretention area maintenance issued by the City of Hayward, California in conjunction with Request for Quotation (RFQ #26-005) for Route 238 Landscape Maintenance. The project encompasses approximately 767,103 square feet of landscape areas across Route 238/Mission Boulevard, Linear Park, Jackson Corridor, and Entry Monuments. The bioretention maintenance specifications detail eight routine maintenance tasks with specific frequencies, including twice-weekly clearing of curb cuts and cobbles; monthly removal of obstructions, debris, and sediment with inspection for proper drainage within five days of rainfall; biannual removal and replacement of diseased vegetation; pre-wet season vegetation maintenance and mulch replenishment; and annual cleaning in October prior to City inspection in November. A mandatory on-site meeting is scheduled for August 27, 2025, at 10:00 AM, with prospective bidders required to submit questions by September 3, 2025, and final proposals due September 19, 2025, at 3:00 PM through the OpenGov Procurement electronic portal. The contract evaluation criteria include quality and thoroughness (10%), experience and past performance (33%), cost and budget proposal (33%), and other considerations (24%).
Qualified contractors must possess a valid California C-27 contractor's license, Bay-Friendly Maintenance Professional certification, chemical applicator and irrigation certifications, and a certified arborist credential. Bidders must provide comprehensive insurance documentation including commercial general liability, automobile liability, workers' compensation, and professional liability coverage. The City of Hayward does not explicitly outline specific set-aside designations for disadvantaged enterprises. No incumbent vendor is identified in the documentation. Interested contractors must create a free account with OpenGov Procurement to submit electronic bids. While no specific contract value is directly stated, the extensive scope of work and detailed maintenance requirements across multiple thoroughfares and infrastructure systems suggest a significant municipal investment in landscape maintenance services.
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BIORETENTION AREAS
The principal maintenance objective for the maintenance of the bio-retention areas is to prevent sediment buildup and clogging, which reduces pollutant removal efficiency and may lead to bioretention area failure. Routine maintenance activities, and the frequency at which they will be conducted are shown in the table below:
Routine Maintenance Activities for Bio-Retention Areas
No. Maintenance Task Frequency of Task
1 Keep curb cuts, covered curb cuts and cobbles clear of weeds, trash and debris.
Twice a week
2 Remove obstructions, debris and trash from bioretention area and dispose of properly.
Monthly, or as needed after storm events.
3 Inspect bioretention area to ensure that it drains between storms and within five days after rainfall.
Monthly, or as needed after storm events.
4 Inspect inlet for channels, soil exposure or other evidence of erosion. Clear obstructions and remove sediment. Replace any erosion with C-10 soil mix.
Monthly, or as needed after storm events.
5 Remove and replace all diseased and dead vegetation.
Twice a year.
6 Maintain vegetation and check the irrigation system. Prune and weed to keep bioretention area neat and orderly in appearance.
Before wet season begins, or as needed.
7 Check that mulch is at appropriate depth (3 inches per soil specifications) and replenish as necessary before wet season begins.
Monthly
8 Annual cleaning every October to prepare for annual inspection from City of Hayward in November.
Annually
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