Bulk Compost and Landscape Materials in Salinas: OMRI Listed Products, SB 1383 Procurement

Bulk compost and landscape materials in Salinas serve two overlapping markets: the commercial landscaping, public works, and municipal projects governed by California’s compost incorporation mandates, and the agricultural operations across the Salinas Valley that depend on soil amendment programs for crop health, erosion control, and organic certification compliance.

GreenWaste produces over 90 recycled-content landscape products at the Z-Best Composting Facility in Gilroy and the Zanker Landscape Materials Yard in San Jose, including OMRI Listed compost, recycled organic mulch, soil blends, aggregate base rock, and decorative landscape materials for purchase and delivery. Municipalities, landscaping contractors, and agricultural operations in the Salinas area can contact GreenWaste for bulk pricing and delivery.

CalGreen and MWELO Compost Requirements

California’s landscape regulations create baseline demand for compost and mulch on virtually every new construction and landscape rehabilitation project in Monterey County.

CalGreen Soil Preparation

The California Green Building Standards Code (CalGreen) requires compost incorporation on new construction landscaping projects. The prescriptive path calls for 4 cubic yards of compost per 1,000 square feet of landscaped area, tilled to a depth of 6 inches, with 3 inches of mulch applied to all non-turf planting areas. These quantities add up quickly on commercial sites, municipal facilities, and multi-unit residential developments.

MWELO Landscape Documentation

The Model Water Efficient Landscape Ordinance (MWELO) governs water-efficient landscape design for projects requiring building or landscape permits. MWELO requires soil analysis and preparation as part of the Landscape Documentation Package, including compost amendment specifications. Non-residential projects with landscape areas of 2,500 square feet or more and residential projects over 5,000 square feet trigger full compliance.

For landscaping contractors working across Monterey County, these mandates make compost and mulch a permitting requirement rather than an optional upgrade. GreenWaste’s OMRI Listed compost and SB 1383 compliant products satisfy both CalGreen soil preparation specifications and MWELO documentation requirements.

SB 1383 Procurement for Municipalities

SB 1383 requires California jurisdictions to procure recovered organic waste products annually. Cities, counties, and special districts within Monterey County must demonstrate purchases of compost, mulch, or other SB 1383 compliant products to meet their annual procurement targets.

GreenWaste’s SB 1383 compliant products count toward these procurement mandates, with tonnage reports and compliance certificates provided. Municipal public works departments, parks divisions, and institutional facilities in the Salinas area can apply GreenWaste compost purchases directly to their SB 1383 procurement obligations.

This creates a practical alignment: municipalities need to buy compost to meet state targets, and GreenWaste produces compost from the organic waste those same communities generate. The material comes full circle.

GreenWaste’s Product Lineup

GreenWaste produces landscape and construction products from recovered organic materials at the Z-Best Composting Facility in Gilroy. Z-Best processes as much as 1,500 tons of organic material per day using monitored windrow composting over a 14 to 18 week cycle, with temperature, moisture, and oxygen levels tracked throughout the process. Finished products are sold through the Zanker Landscape Materials Yard for purchase and delivery.

Compost

GreenWaste Z-Best Organic Compost is OMRI Listed for use in organic farming, vineyards, and other certified organic operations. The product meets SB 1383 procurement requirements and CalGreen soil preparation specifications. GreenWaste also produces Landscape Compost and custom blends for commercial landscaping, public works, and municipal applications.

Mulch

Recycled organic mulch produced from recovered wood and green waste materials. Applied at 3 inches depth per CalGreen specifications across non-turf planting areas, mulch reduces irrigation demand, moderates soil temperature, and suppresses weed growth.

Aggregate and Base Rock

Recycled aggregate base rock produced from recovered construction materials. Used in road base, parking areas, drainage applications, and general grading for commercial and municipal projects.

Soil Blends and Sands

Custom soil blends for landscaping, bioretention, and stormwater applications. GreenWaste’s bioretention soil media (BSM) specification is 60 to 70% sand and 30 to 40% compost, meeting C.3 stormwater requirements for bioretention basins and rain gardens.

Decorative Landscape Materials

Decorative rock and landscape materials for commercial, municipal, and residential applications.

The full product catalog with specifications and sizing options is available through GreenWaste’s product pages.

Agricultural Applications in the Salinas Valley

The Salinas Valley is one of the most productive agricultural regions in California, with row crops, vineyards, nurseries, orchards, and organic farming operations that use compost for soil health, nutrient management, and erosion control.

GreenWaste’s OMRI Listed compost supports organic certification requirements for farms, vineyards, and other certified organic operations. For conventional operations, compost amendment programs improve soil structure, water retention, and long-term productivity without synthetic inputs.

SB 1383 also intersects with agricultural purchasing. CalRecycle’s procurement framework allows jurisdictions to count compost purchased for agricultural land application toward their annual procurement targets, creating an additional pathway for municipalities to meet state requirements while supporting local agriculture.

GreenWaste provides volume calculators and expert consultation to help agricultural operations and landscaping contractors determine accurate ordering quantities for their specific applications. Contact GreenWaste for bulk pricing, delivery coordination, and volume estimates.

Frequently Asked Questions

Is GreenWaste compost OMRI Listed?

GreenWaste Z-Best Organic Compost is OMRI Listed for use in organic farming, vineyards, and other certified organic operations. “OMRI Listed” is the correct designation, indicating the product has been reviewed and approved by the Organic Materials Review Institute for use in organic production.

Does GreenWaste compost meet SB 1383 procurement requirements?

GreenWaste produces SB 1383 compliant compost and mulch products that count toward municipal procurement mandates. GreenWaste provides tonnage reports and compliance certificates for jurisdictions documenting their annual procurement.

How much compost does CalGreen require for new landscaping?

CalGreen’s prescriptive path requires 4 cubic yards of compost per 1,000 square feet of landscaped area, tilled to 6 inches deep, with 3 inches of mulch on non-turf planting areas. These quantities apply to qualifying new construction and landscape rehabilitation projects.

Where is GreenWaste compost produced?

GreenWaste compost is produced at the Z-Best Composting Facility in Gilroy, which processes as much as 1,500 tons of organic material per day using monitored windrow composting over a 14 to 18 week cycle. Finished products are available for purchase and delivery through the GreenWaste Zanker Landscape Materials Yard.

Can agricultural operations in the Salinas Valley purchase GreenWaste compost?

GreenWaste’s OMRI Listed compost is available for purchase and delivery to agricultural operations, including organic farms, vineyards, nurseries, orchards, and other certified organic operations throughout the Salinas Valley area. Contact GreenWaste for bulk pricing and delivery coordination.

What is bioretention soil media (BSM)?

GreenWaste’s BSM specification is 60 to 70% sand and 30 to 40% compost, designed for bioretention basins, rain gardens, and stormwater treatment applications. BSM supports C.3 stormwater compliance for commercial and municipal projects requiring post-construction stormwater treatment.