Final screening level risk assessment : Phase 2 human health risk assessment of oil and gas activity in northeastern British Columbia

The intention of this SLRA is to identify the potential oil and gas related emission sources in the region that present the greatest potential risk to human health, and to provide a means of prioritizing scenarios for a quantitative assessment in the detailed HHRA. [...] The exposure scores were based on a combination of the likelihood of an emission/release event occurring, the duration and areal extent associated with that event, and the overall magnitude of the event’s exposure. [...] The risk matrices provided the relative ‘score’ of the potential health risks on the basis of varying types of oil and gas activity. [...] The objectives of the SLRA are to: • Summarize the nature of oil and gas activity in NE BC; • Develop a conceptual model focusing on issues surrounding oil and gas activity in NE BC, based on the information in the Phase 2 Direction Document and the Literature Review; • Identify oil and gas related scenarios for further evaluation within a screening matrix, giving consideration to both routine ope [...] This type of review will be completed as part of the regulatory review component of the Phase 2 HHRA project; and • Put forth recommendations above and beyond directing the scope of work for the detailed quantitative HHRA component of the Phase 2 HHRA project.