We are pressing for electronic reporting by industry which should reduce errors, speed up the Environment Agency's processing of the annual release returns, and enable us to reveal the facts to the public more quickly. We have used postcodes to map the industrial sites. We have made an effort to correct obviously incorrect postcodes, but some errors may still remain. In some cases, we have assigned a grid reference for mapping rather than using a postcode. And finally, there are of course many other types of pollution.
Traffic is certainly a major source of pollutants.
Friends of the Earth will continue to campaign to ensure that better data is available on all sources of pollution. From the maps you can see who and where are the major industries in Scotland. For example, copies of permits and monitoring results should be available. This is probably the most important question, yet the most difficult to answer. In most circumstances the true answer is that nobody knows exactly.