For the past 20 years, high quality basalt products have been produced at Exeter Quarry and distributed to markets in the Southern Highlands, Sydney metropolitan area, Illawarra, Southern Tablelands and the Wollondilly-Picton area. In order to continue to supply the high quality basalt products, Concrite Quarries Pty Ltd now proposes an extension of its quarrying operations. The company has lodged a Development Application accompanied by an Environmental Impact Statement (EIS) describing the proposal to extend its extraction activities and assessing its environmental impacts in the context of a comprehensive set of design and operational safeguards. This Summary presents an overview of the entire proposal and the need for high quality basalt products together with an assessment of the impact of the proposal upon the existing biophysical, cultural and economic environment.