EVALUATION OF AIR QUALITY LEVEL IN A URBAN AREA
The residential town of Varese, 90.000 inhabitants, is sited in the preAlpine area, 50 km North of the industrial area of Milan. It was considered a low polluted area up to the Autumn 86 when high acidity values were detected in the rainfall after a long dry period. The public concern emphasized by mass media was the motivation for a request of authorities to our lab to investigate the problem during the approaching cold season. Three main questions were submitted: (1) was the air pollution level within the legal limits, (2) what was the contribution from distant areas, (3) which initiatives could be undertaken. To approach the problem, the following steps were taken: (a) evaluation of the emission inventory. The main pollution sources were two: heating systems and traffic. (b) analysis of the meteorological conditions. From data analysis it was possible to forecast days with pollution accumulation. (c) some surveys during these days by a mobile lab, equipped with conventional and remote sensors, along the main traffic roads. A mapping of specific pollutants was possible. Such procedure gives more information than a classical monitoring network, allowing an identification of sources requiring an inspection. Specific suggestions, both for heating systems and for traffic regulation, deduced from this study will be presented.
Bibliographic Reference: 4TH INTERNATIONAL SYMPOSIUM ON ENVIRONMENTAL POLLUTION AND ITS IMPACT ON LIFE IN THE MEDITERRANEAN REGION, KAVALA (GREECE), SEPT. 6-11, 1987 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 33563 ORA
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Record Number: 1989126022401 / Last updated on: 1989-01-01
Available languages: en