What are the compounds used for water proofing in sunken areas?

The field is based on the use of engineering and scientific applications to serve and protect the environment and includes a wide range of related projects. Engineers working environment in industrial and research sectors to complete solutions designed to control pollution as well as to diversify its energy sources and increased to the greatest extent possible. Concerns environmental engineer also include other topics such as the water sector and management of pollutants and air quality control and keep the soil from pollution and urban planning.