Pierre River Mine Project

HEALTH AENV SIRS 79 – 89
Question No. 83
Section 14.1
database available at http://hazmap.nlm.nih.gov/. Last accessed April
2007.
OMOE (Ontario Ministry of the Environment). 1996. Odour Impacts – An
Overview. STB Technical Bulletin No. EES-1. February 1996.
Ruth, J.N. 1986. Odour thresholds and irritation levels of several chemical
substances: A review. Am. Ind. Hyg. Assoc. J. 47: 142–151.
US EPA (United States Environmental Protection Agency). 1992. Reference
Guide to Odor Thresholds for Hazardous Air Pollutants Listed in the
Clean Air Act Amendments of 1990. EPA/600/R-92/047.
van Gemert, L.J. and A.H. Nettenbreijer. 1977. Compilation of Odour Threshold
Values in Air and Water. National Institute for Water Supply, Voorburg,
Netherlands.
Zang, Q., J.J.R. Feddes, I.K. Edeogu and X.J. Zhou. 2002. Correlation Between
Odour Intensity Assessed by Using N-Butanol Reference Scale and
Odour Concentration Measured with Olfactometers. Presented at the
Agricultural Institute of Canada (AIC) Meeting, July 14–17, 2002.
Saskatoon, Saskatchewan.
Request Volume 2, SIR 60a, Page 18-10.
Shell was asked to provide the rationale for, and evidence to support, the use of
industrial emissions to determine community concentrations. The response
explains how the approach was carried out, but does not explain the rationale for
estimating community concentrations in this manner. Since communities will
inevitably grow with the growth of industrial projects, it is reasonable to predict
that community emission sources will increase as well.
83a In the rationale, explain how this approach will accurately capture this
community growth (and associated increased emissions).
Response 83a Various regulatory agencies have provided guidance regarding the use of
monitoring data to develop background values for use in a dispersion modelling
analysis (AENV 2009; BC MOE 2008; US EPA 2005). In general, these
guidance documents state that monitoring data can be used to represent other
regional sources, if at least one full year of representative monitoring data is
available.
The United States Environmental Protection Agency (US EPA 2005) indicates
that average monitored concentrations should be used to represent background
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