A social audit is an examination of the activities of a business that support the public interest. For example, a firm may support a foundation, make donations to non-profit entities, or allocate some staff time to pro bono work. A social audit can also include the environmental impact of a business, such as any negative effects on groundwater pollution or air pollution, or the level of energy use. A social audit is usually initiated by a business that wants to improve its image with the general public or the local community. The resulting report is used to identify opportunities for improvement within the company. A favorable social audit report might be released to the public to enhance the entity's public relations.