Norcal Ag Service provides bulk organic soils, soil amendments and farm supplies like compost, chicken and cow manure, gypsum, limestone, organic fertilizers,biotreatment soil, road dust control and other soil stabilization services to all of central and northern California communities, including Napa, Sonoma, Healdsburg, St. Helena, Stockton, Modesto, Merced, Sacramento, Yuba City, Lodi, Livermore Our Mission as a company is to work with our local growers to find products and identify methodology that increase soil health and fertility while at the same time protecting the watershed. So much damage has been done by the over use of synthetic fertilizers that it truly is time to go back to natural farming practices