Specifications include, but are not limited to: Contractor agrees to provide Application of Pre-emergent and Contact Herbicides on an on-call, as-needed basis in various locations within San Diego and Imperial Counties. Contractor shall provide all labor, tools, materials (excluding all herbicides used), equipment, and incidentals to provide spraying of pre-emergent, trans-locating, and contact herbicides. Spray operations and herbicides must meet Caltrans’ specifications, and will be applied to an estimated, 4,000 acres of nonlandscaped and/or landscaped areas located within the Caltrans rights-of-way, for the purpose of weed control, fire prevention, flood prevention, erosion control, and preservation of roadside vegetation.