Kontrollmålinger av PAH i luft på Årdalstangen sommeren 1991.

Measurements of PAH were performed at Årdalstangen during the months June - August 1991. The measurements showed that the air concentrations were reduced by about 50% since the summer 1981. The emissions from the industry contributed the most to the measured concentrations of PAH. The concentrations at Årdalstangen were far above the concentrations at reference stations in Oslo and Lillestrøm.