Acid Sulfate Soil Risk Map 50K (DWER-049)

Data showing the risk of Potential Acid Sulfate Soil (PASS) materials that may be disturbed by land development activities based on the likelihood of PASS materials occurring within 3m of the ground surface. This data is for use by planners to assess whether development applications for specific sites require additional conditions on the basis of whether normal land development activities carry a risk of disturbing PASS materials. The depth of 3m is considered since this was regarded as the depth that most soil disturbance activities would extend in most land development processes. Disturbance activities in this context include drainage, excavations and dewatering. This is a composite risk map combining the Lower South West, Swan Coastal Plain, Albany Torbay and Geraldton risk maps captured at a scale of 1:50,000. For further information phone the Contaminated Sites hotline [phone].本数据集基于地表3米范围内潜在酸性硫酸盐土壤（Potential Acid Sulfate Soil，PASS）物质的出现概率，评估并呈现了土地开发活动可能扰动此类物质的风险。 本数据集供规划人员使用，用于评估特定地块的开发申请是否需要增设附加条件，评估依据为常规土地开发活动是否存在扰动PASS物质的风险。 之所以选取3米深度作为评估基准，是因为多数土地开发流程中的土壤扰动活动的影响深度通常不超过该范围。 本语境下的扰动活动涵盖排水、开挖及疏干排水作业。 本数据集为综合风险图，整合了比例尺为1:50000的下西南地区、天鹅海岸平原、奥尔巴尼托贝及杰拉尔顿地区的风险图。 如需进一步咨询相关信息，请拨打污染场地热线1300 762 982。