Our Permeable Class 2 Base Rock is a crushed gravel blend engineered to provide excellent drainage while offering load-bearing stability. Commonly used in permeable pavement systems, bioswales, French drains, and stormwater retention features, this eco-friendly base material meets Caltrans-like gradation specs while allowing water infiltration—making it a preferred option for sustainable landscape and construction projects.
 
Ideal for projects in Alameda, Napa, Sonoma, Marin, Solano, and Contra Costa counties, especially where stormwater mitigation or LEED credits are required.
 
Product Highlights:
Open-graded for high permeability
Compactable yet allows stormwater infiltration
Complies with green infrastructure guidelines
Made from 100% recycled crushed aggregate (green-gray tint)
Reduces runoff & supports long-term drainage performance
 
Common Applications:
Permeable paver base
Driveway sub-base for drainage
Stormwater management zones
Retaining wall backfill
Bioswales and rain gardens
 
Material Coverage Per Ton:
~ 100 sq ft 2" depth
~ 50 sq ft 4" depth
~ 25 sq ft 6" depth
 
📌 Now delivering in Vacaville, Fairfield, Vallejo, Sonoma, Napa, American Canyon, Novato, Petaluma, Martinez, and beyond.