Which of the following is NOT a score used for calculating Soil Matrix levels?

In the context of calculating Soil Matrix levels, soil pH is not typically included as a scoring factor. Soil Matrix scoring is primarily focused on aspects that directly influence contamination risk and water movement, rather than chemical characteristics of the soil itself.

Depth to groundwater is crucial in understanding how close contaminants might reach the water source. The sensitivity of the uppermost aquifer is also important, as it indicates how susceptible the water source is to contamination. Potential receptors refer to the entities that might be impacted by contamination, such as human populations or ecosystems. Each of these factors provides insight into the potential for harm, which is why they are included in the scoring system for assessing risks associated with soil contamination.

In contrast, while soil pH can impact biological activity and environmental processes, it does not directly correlate with the risk levels for contamination in the same evaluative way as the other options. Therefore, soil pH does not play a role in Soil Matrix calculations.