ABSTRACT
During the establishment of MACT standards for POTWs under Title III of the CAAA, controlling the emissions of HAPs has been a regulatory priority. For instance, several state and air district regulations such as the California’s Air Toxics “Hot Spots” Information and Assessment Act of 1987
and South Coast Air Quality Management District (SCAQMD) Rules 1179,
and 1402
require accurate emission inventory and quantiÞcation of air toxics emissions from POTWs to determine their impact on human health. In some cases, direct test data from liquid samples were used to develop emission factors for estimating the emissions from POTWs. In such instances, the importance of sampling and analytical methods cannot be overemphasized. In addition, direct air emission data are needed for permit compliance monitoring, calculating the mass emission rates and evaluating the efÞciency of wastewater treatment processes, scrubbers and combustion sources such as boilers, ßares, gas turbines, internal combustion engines and sewage sludge incinerators.
