- Gap analysis of best practice in mining
- Environmental risk assessment
St. Ives Gold Mining Company (SIGM) has mining operations on and adjacent to Lake Lefroy in Western Australia (WA). The ore is processed at a heap leach operation with a capacity of 2.2 – 2.5 Mtpa and/or a 4.5 Mtpa gold processing plant (the Lefroy Mill). Access to these operations is via haul roads and causeways.
In 1999, a Public Environmental Review (PER) prepared by URS was submitted to the WA Environmental Protection Authority (EPA) to seek approval for future mining operations at Lake Lefroy. Ministerial approval was granted in July 2000. Since the PER was prepared, URS has conducted a number of other environmental impact assessments for SIGM for projects including the development of the Bahama Pit, the Thunderer Pit, the NRK Cutback and the Grinder Pit, and the development and expansion of the St. Ives heap leach facility. In 2005, URS assisted SIGM in obtaining approval to increase the volume of water discharged from lake-based pits.