Helena, Mont., April 11 -- State Procurement Services Division has issued a solicitation notice (SPB-RFP-2026-0610EH) for Environmental Services - Master Contract (State Use Only) (1636), Environmental Services - Air Quality Inventories/Monitoring (1601), Environmental Services - Assessments (1602), Environmental Services - Bioassay (1603), Environmental Services - Bond Forfeitures and Landfill Closures (1604), Environmental Services - Controlled Burning (1605), Environmental Services - Drilling (1606), Environmental Services - Fertilizer Services (1607), Environmental Services - Hazardous Materials & Site Evaluation, Design & Clean-up (1608), Environmental Services - Hydrology/Hydraulics/Hydrogeology (1609), Environmental Services - Landfi...