NIGP 33560: Organic Base (Including Manure and Guano)

NIGP 33560 Organic Base (Including Manure And Guano), an Item code, describes soil amendments and organic fertilizers that state and local governments procure primarily for roadside landscaping, erosion control, and vegetation establishment on public rights-of-way. State transportation departments solicit organic base materials as components of larger landscaping and site restoration projects, typically bundled with mulch, irrigation, plant installation, and soil preparation work. The materials themselves serve as carriers for nutrient application and soil conditioning rather than as standalone commodity purchases; procurement occurs through construction and landscape maintenance contracts issued by state departments of transportation, counties, and municipalities rather than through direct materials procurement.

The California Department of Transportation (Caltrans) posted a Small Business Minor B construction contract solicitation (05A2978) on March 10, 2026, due March 24, 2026, for landscaping and irrigation work in Santa Barbara County valued at approximately $380,000.00. The contract encompasses roadside clearing, soil amendments, organic fertilizer application, plant installation, plant establishment work, wood mulch application, and irrigation system installation across 28 line items, with contract completion required within 20 working days. Bidders must hold a valid state contractor's license, Federal ID number or Social Security number, and Department of Industrial Relations registration number; the solicitation was restricted to certified Small Businesses under Section 2-1.05, with DVBE participation encouraged but not mandated. Electronic bid submissions were required to kimberly.reap@dot.ca.gov by 2:15 p.m. on the due date, with any bid exceeding $461,000.00 subject to rejection. Payment bonds equal to at least 100 percent of the total bid and insurance were required at award for the low bidder.