[15][16] During the early 2010s, it worked on an air quality assessment for the prospective expansion of a South African manganese ore mining line at the behest of Transnet.

[17] Around the same time period, ERM assessed the environmental compliance of a major train station on behalf of Brisbane City Council,[18] and a new rail corridor in Tanzania.

[20] During 2021, it performed an environmental impact assessment in Guyana for the American oil and gas corporation ExxonMobil; its work on the project became a controversial matter due to alleged errors.

[23] It also certified that the Batoka Gorge Hydroelectric Power Station, on the international border between Zambia and Zimbabwe, did not pose serious adverse effects on human settlement along the Zambezi River.

[25] In 2022, the company was amongst several parties that were sued by a group of Houston residents that alleged misrepresentation, fraudulent concealment, wrongful death, and personal injury claims related to environmental pollution.