Dec 1, 2016 · An integrated approach to pit lake management engages ecologists in pit lake design, prioritising ecological progress and passive treatment in mine closure planning, ultimately empowering communities with post-mining options.

successful and economic treatment of a contaminated pit lake. These steps include pit lake profiling, laboratory testing, and proper design of the treatment system for the site specific requirements. This is followed by detailed monitoring and release of water in compliance with local regulations. These fool-proof steps can be

Apr 11, 2024 · As the formation of the pit lake, the fragmented slope rock mass of interbedded green mudstone and brown shale slides to the pit bottom (Figure 6a), while the underlying oil shale layer generally can maintain stability, due to its higher strength and lower sensitivity to …

a step change in understanding the complex interactions at pit lakes, assess risk, sustainable pit lake planning, and empower communities with post-closure options. Why CRC TiME? There is a need to directly address the challenge of post-closure management of pit lakes and pit voids that are likely to become pit lakes for safe relinquishment

Oct 21, 2008 · The quantitative study of integrated controls on pit lake water quality, for which long-term, well-constrained data sets are desperately needed, will also provide insight into the evolution of other systems where acidity may be overcome by organic carbon-driven processes, such as water bodies impacted by atmospheric acid deposition [Dillon et ...

The physical structure of a lake is a key factor in determining its properties. 1. The deeper a lake is compared to its horizontal dimensions, the more likely it is to stratify permanently. 2. The larger the volume is compared to its catchment area, the poorer in nutrients it is likely to be.

Apr 25, 2023 · While pit lakes can be spectacular examples of recreation and renewal, pit lakes may be better known for their poor water qualities and risks to communities and the environment. Often the public wants to simply “fill the pits in” to restore a terrestrial landscape, but this is not always possible.

Following cessation of pumping, in most climatic regimes, both surface water and groundwater will inflow to the pit, creating a pit lake (Figure 19). These pit lakes become part of the closure landscape and attention must be directed toward their hydrology and especially, water quality trends in the lake.

evaporative “sink” when pit lake water evaporation rates exceed influx rates. Although not ideal closure, management of local surface and groundwaters contaminated by Acid and Metalliferous Drainage (AMD) through entrainment toward an evaporative terminal pit lake may provide a best-case scenario for

2.1 What is a pit lake? The Cumulative Environmental Management Association (CEMA) developed the following definition for an oil sands pit lake, formerly called end pit lakes or EPLs (CEMA, 2012): “an engineered water body, located below grade in …