Vapor Intrusion Services Soil Vapor Surveys are critical investigative tools when assessing potential contamination at dry cleaners, gasoline service stations and other sites using volatile organic compounds and cholrinated hydrocarbons. Soil Vapor Surveys are conducted to assess upward vapor risk from volatile chemicals. Contaminated soil and groundwater can release volatile chemicals (such as PCE, TCE, benzene, toluene, ethylbenzene, and xylenes) in the vapor phase. These vapors migrate through the subsurface soil, the ground surfaces, and flooring material in open areas of buildings. They can cause health risks for building occupants. Viridian® Inc., conducts active, passive and flux chamber soil vapor surveys using EPA-supported methods and multi-state guidance. Vapor samples can be collected at various depths through multiple types of terrain, including concrete or asphalt and various flooring material. We use hand-operated equipment for limited access sites and sub-slab sampling in building interiors. Vapor samples are stored in air tight Tedlar® bags or Summa® canisters that are shipped directly to a laboratory for analysis. Active Collector Passive Collector Services Offered: • Conceptual Site Models • Active and Passive Soil Vapor Surveys • Flux chamber surveys • Sub-slab and Near-slab Sampling • Indoor Air Sampling • Semi-Permanent Vapor Monitoring Probes • Experienced personnel and technicians following ASTM, ITRC, EPA, and local regulatory accepted standards.