Acid Rock Management Challenges Reedy Creek Quarry Gold Coast

The purpose of this paper is to outline the geo-environmental challenges associated with the management of acid rock encountered at the Reedy Creek Quarry and key outcomes of a recently completed Acid Rock Management Plan. Rainfall runoff collected onsite is typically around pH 2.7-3.0 which is substantially below the quarry’s licensed discharge limit, and has the potential to adversely impact on the downstream receiving environment. Acid drainage is due to rainfall interaction with acid rock containing pyrite, which is prevalent in localised sections of the quarry. Council commissioned consultants to undertake a geo-environmental investigation and to produce an Acid Rock Management Plan.