@article {46314,
	title = {MacKay River expansion. V. 2A. Environmental impact assessment. Section 3. Noise. Appendix I. Calculation of permissible sound levels. Appendix II. Environmental noise descriptors and terminology},
	year = {2005},
	institution = {Petro-Canada},
	address = {Calgary, AB},
	url = {http://www.petro-canada.ca/pdfs/VolumeIIASection3-AppendicesI-II.pdf}
}
