“…The first type aimed at reaching quality standards at a minimum cost (Atkinson & Lewis, 1974;Destandau & Nafi, 2009Montgomery, 1972;O'Ryan, 2006), and the second type maximized the net social benefit, including total abatement costs and environmental damage, or the benefit of the pollution removed (Cabe & Herriges, 1990;Henderson, 1977;Howe & Lee, 1983;Kolstad, 1987;Krysiak & Schweitzer, 2010;Mendelsohn, 1986;Tietenberg, 1974;Wu & Babcock, 2001). …”