Our technology for environmental measurements is targeted especially on soil contamination survey tasks. We use unique combination of PID and IR detection technology for relative and fast in situ monitoring of contaminant with separate reading for methane, hydrocarbon group and CO2. Field experience has proved that an IR analyzer is essential to the general Soil Contamination Survey. The contaminant concentration is often above 3000 ppm, where PID detection cannot be used. If hydrocarbons are present in the contaminant, consequent continuity between PID and IR outputs can be observed. Our technology uses an intelligent, grid-oriented data logging that allows the completed 3-D graphic output description of the subsurface contamination in very transparent way.