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In Queensland, it's no secret that the renewables industry is booming. However, consistently, particularly in the south of the state, these projects are quickly encountering an unexpected challenge - dispersive soils. While those in the erosion and sediment control field could reasonably foresee this based just on the geographic location or through a brief site visit only, consistently renewables projects are not aware of this aspect until well into construction, when unexpected erosion issues start to emerge. It may be surprising that these very significant projects, with budgets of hundreds of millions of dollars, can overlook an aspect that is likely to cause considerable challenges if management is not planned and budgeted. Failure to identify dispersive soils in project scoping and planning can result in development of inappropriate erosion and sediment control plans, unsuitable rehabilitation plans, failing rehabilitation, and lengthy maintenance periods of erosion and sediment controls until groundcover is achieved (including desilting, reshaping, restabilising). Drains fail due to erosion, releasing sediment which settles downgradient, reducing drain capacity, resulting in drain overtopping and sediment deposition onto roads or hardstands (reducing trafficability) or releasing sediment into waterways. Erosion and poor stormwater management from failed drainage can mean water is not managed as per design and begins to erode in and around infrastructure, including roads, hardstands, solar panel piles, and waterway culvert crossings, resulting in expensive repairs of often difficult to access areas (particularly in solar construction due to tracking infrastructure). Some projects believe they will solve their erosion issues with hard reinforcing, like rock placement (riprap) or shotcrete or concrete, and are consequently shocked when these expensive repairs are promptly undermined. These impacts can result in landholder and broader community complaints, environmental consequences, compliance challenges, and costly rework. During project planning, there are multiple avenues to identify this challenge. From an initial desktop perspective, publicly available soil mapping with attached descriptions could be reviewed, which will indicate dispersiveness. Even at the highest level of state-wide soil classification, the considerable portion of the state mapped as sodosols should be an indication of potential dispersiveness, named due to high concentrations of exchangeable sodium, driving sodicity, which often results in dispersion. Assuming these aspects are overlooked, the early onsite inspections allow for an opportunity to visually observe indications of dispersive soil, often presenting as gully erosion along pre-existing roadsides and along farm tracks, or as gully or tunnel erosion adjacent to waterways, which contain the classic 'chocolate milk' water. These inspections are generally undertaken by ecologists and geotechnical engineers, and rarely, if ever, by erosion and sediment control specialists. Identifying this potential constraint is not in their purview, or skillset. Geotechnical investigations always include Emerson Testing, which is a measure of the dispersiveness of a soil, however this almost always is restricted to the depth of the base of foundations, well below the topsoils or subsoils likely to be disturbed, exposed, and requiring final stabilisation. However, even when shallower soils indicate dispersiveness, such as being Emerson Class 1 or 2, this is often only considered in foundation design, and is not considered in drainage design, erosion and sediment control or rehabilitation scoping, planning and budgeting. Due to these common oversights, it is important to turn our attention to developing improved recommendations for renewables developers to identify dispersive soils, and communication of these. Using a common ~40 turbine wind farm as an example, which is generally linear infrastructure (consisting of significant lengths of roads connecting turbines), and taking guidance from the IECA White Books, Chapter 3 Site Planning, Table 3.2, the required number of sample sites would be in excess of 930. Using an estimate of 1 sample location per 30 mins, it is unlikely that a wind developer will be interested in 232 days of soil sampling prior to/during project scoping. While the gold standard would likely consist of a full-scale soil survey including sampling for all relevant characteristics (including dispersiveness) and development of associated soil mapping, with final micrositing of project infrastructure (particularly wind turbines) having consideration of soil characteristics, it is unrealistic to move immediately from the current process to this. In order to identify the existence of dispersive soils, a well-designed reduced soil sampling program and analysis suite is possible, which will fast track the process and reduce costs. In our experience, Emerson Aggregate Testing has not proven to be a reliable indicator of dispersion, if other soil characteristics are disregarded. If targeting dispersion only, a more suitable suite is one that includes, at least, exchangeable basic cations (Calcium, Magnesium, Potassium, Sodium), Cation Exchange Capacity and Particle Size Distribution, in addition to Emerson Aggregate Testing (EAT). In our experience, soils can exhibit severe dispersion in the field, and have exchangeable cation aspects which would indicate a high likelihood of dispersiveness (such as sodic or magnesic soils), but have moderate to low dispersiveness based on Emerson testing. The reason for this is currently unknown comprehensively, though some theories are held and are under investigation. Furthermore, sands and gravels are unsuitable for Emerson testing, and failure to undertake Particle Size Distribution (or field assessment) to identify these may result in EAT scores that indicate negligible dispersiveness, yet the soil may lack soil cohesiveness, which tend to erode regardless of dispersiveness.  Identification of dispersive soils is critical in the planning and design stage of renewables projects to prevent budget blowout. Topsoils and shallow subsoils should be included in sampling regimes as part of project scoping, or at least, early works. A reduced sampling density and analysis scope is suggested to be sufficient for this purpose, and should be undertaken by all renewables developers.