What critical factor must be ensured for effective installation of RECPs on the soil?

For the effective installation of Rolled Erosion Control Products (RECPs), it is essential to minimize soil compaction. This is crucial because when soil is compacted, its structure becomes denser, which can hinder water infiltration and root growth while also reducing the soil's ability to retain moisture. Compacted soil can lead to increased runoff, which further exacerbates erosion issues that RECPs are intended to mitigate. By ensuring that soil compaction is minimized, you create an optimal environment for the RECP to adhere properly and perform its intended function of protecting the soil and promoting vegetation growth.

The other aspects mentioned, such as maximizing surface area or selecting materials based on color, do not directly address the physical characteristics of the soil that impact the performance of RECPs. Additionally, saturating the soil before installation can lead to issues with stability and effectiveness, as overly wet conditions can prevent proper contact between the RECP and soil, ultimately leading to reduced efficacy in erosion control.