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i�_ E�_f�! � �' .. !. ,l�_ . � . ! � . . �: l k_ f �� No. In fact, studies show that emissions from the HMA industry have decreased over 97% since 1970 despite a 250% increase in production. All emissions from HMA facilities are well below the established threshold limit values (TLVs� set forth by the American Conference of Governmental Industrial Hygienists (ACGIH�. The EPA delisted HMA facilities from the MACT (Maximum Available Control Technology) standard in February 2002 because such facilities are not major sources of air pollutants. The HMA industry continues to develop new technologies to minimize emissions during mix production and paving operations. ' ;.; �. C i-�. �� ( � F, ` < E � i �: �-�_ f ; f : � ' `� i € ." � .` � §�f s Extensive testing has been conducted on asphalt fumes, both from paving and roofing applications. NIOSH (National Institute of Occupational Safety and Health) concluded in their December 2000 report that based on their data there is insufficient evidence to associate lung cancer with paving asphalt fumes. IF 1 i I f` f�' ��[ . �.�! ,`1 l� 'f��.f i f:�., i. I:�.,i fl� C.l ;. Hundreds of tests have been conducted primarily because of the apparent similarity of asphalt and tar. What the tests have proven is that these are two completely different materials from completely different sources and with completely different health effects. Coal tar does have some harmful health effects. Those same effects have not been found to be associated with asphalt. .` "i f: I `! E�L�� F.�`'C?�: . Particulate matter ("PM") is a term used to denote microscopic liquid or solid particles much smaller than the diameter of human hair. Particle size is measured in microns, which is equal to one-millionth of a meter. Particulate matter results from the drying process at an HMA facility. In the case of HMA facilities, the particulate is almost entirely stone dust. Stone dust is a valuable part of the product that the facility owner does not want to lose. It is collected by a baghouse and returned to the mixer for inclusion in the paving materials. -� irr�� ,,,--::::�f�� - - �LL_ t - �:�:..,��a - - �� _ W,�� ..� .. ,�. w. ;_� . .. _ _.. , � �.,, � �.�. ,��t. �.�� ..�r- .� _ m �-._ �:. �_..