( b ) Develop ozone critical level exceedance maps based on the new critical levels for ozone ( with MSC-W ) ; ( c ) Report on heavy metal deposition and the potential contamination of food crops ( with Task Force on the Health Aspects of Air Pollution ) ; ( d ) Comparison between the concentrations of heavy metals in mosses in the 2000/2001 survey and EMEP heavy metal deposition data ( with the EMEP Meteorological Synthesizing Centre - East ( MSC-E ) ) .