We work to understand and manage the sensitivities of the environments in which we operate, and our responsibilities to them, from beginning to end of our operations.
Our operating management system lays out the steps and safeguards we believe are necessary to maintain responsible operations, helping our businesses around the world to understand and minimize their impacts, whether to land, air, water, flora or wildlife.
We have taken extensive measures to ensure we have minimal environmental impact in the areas in which we operate. The following are a few samples of our efforts.
Wentworth utilized ‘Low Impact Seismic’ methods of line access and clearing. Whenever possible, only branches of trees were cut to gain access to a 1.5 meter wide seismic trail. All equipment used was man portable and carried down these narrow trails. Twelve months after completion of our seismic acquisition program, all vegetation has grown back, leaving little or no indication of the original location of the seismic lines.
The surface soil of the Msimbati Peninsula surrounding Mnazi Bay is mainly comprised of deep, very fine sand, making it impassible to the heavy load vehicles required for the Project. Even non-commercial vehicles bog down in the loose sand. To deal with this challenge, Wentworth introduced an innovative material called Geoweb, a perforated, honeycomb design plastic material that acts as an effective soil stabilisation system. The Geoweb is laid on the sand surface and the honeycombs filled with sand, which compacts down to allow movement of loads up to 40 ton. The result: No asphalt, no permanent road. Should the roadway no longer be required, the Geoweb can be lifted out and removed, leaving nothing but…. sand.
The upstream exploration and drilling program and the development of production facilties requires a large number of temporary and permanent employees and contractors, who are housed at an Wentworth-owned camp on the Msimbati Peninsula. Disposal of wastewater and sewage at the camps has been neutralized using containerised ‘eco-friendly’ treatment plants that process waste through multiple cycles, resulting in a benign end product that is leached through a tile bed system into the surrounding soils.
Two de-salination plants provide over 24,000 litres of freshwater per day, eliminating the need for reliance on surrounding ground water systems that are already under great stress due to drought conditions.
For general waste, innovative management programs have been initiated including effective waste separation and recycling of plastics, glass and tin cans crushed in a specially designed ‘elephant foot’ crusher. Pre-cooked food wastes are composted using a novel water tank turning system, while cooked food wastes and other burnables are disposed of using an incinerator which can burn up to a ton of waste a day. Emissions from waste combustion are minimized through the use of a high temperature incinerator, operating at 600-800°C.