PALMDALE – The California Air Resources Board announced Tuesday it fined the city $18,500 for failing to conduct annual smoke emissions tests on the city’s heavy-duty diesel trucks in 2006 and 2007. An ARB audit found that the city had not been conducting the inspections, which are required to make sure that diesel trucks are compliant with California emissions standards. For the full story visit www.avpress.com/n/05/1105_s6.hts