One challenge with ERW is robustly and accurately measuring and quantifying atmospheric CO₂ removal. To address this challenge, Terradot established field-scale demonstration projects, applying basalt rock powder across no-till soy succession cropping systems in Southern Brazil. Here, we present results of rock weathering, factors that impact the efficiency of CDR in the soil, and downstream losses of CO₂ such as degassing in the river networks and oceans. To fully calculate net CDR, we also present the CO₂ emissions of project activities. Our work provides insights for establishing and managing large-scale commercial ERW deployments.