For drip irrigation with a Ra greater than 0.1, how far must it be from the Edwards Aquifer?

In the context of drip irrigation systems and their proximity to the Edwards Aquifer, the requirement for a separation distance is rooted in ensuring the protection of the aquifer from potential contamination. The value of Ra (the rate of application for the system) being greater than 0.1 signifies that the irrigation system dispenses water more intensively. When Ra exceeds this threshold, it indicates a higher likelihood of movement of water, which could potentially transport nutrients, chemicals, or other contaminants into the ground where they could reach the aquifer.

The designated distance of 150 feet from the Edwards Aquifer for systems with Ra greater than 0.1 is established based on best management practices and regulations that aim to mitigate risks associated with water quality. This distance serves as a buffer zone to minimize the impact of runoff or deep percolation of water from the irrigation system on the aquifer, thereby preserving the integrity of its water quality.

The other option distances are less appropriate according to regulatory standards because they may not provide a sufficient safety margin to protect against the potential risks associated with higher application rates of irrigation systems. Therefore, the requirement of 150 feet aligns with established guidelines for the safe operation of drip irrigation systems in order to protect vital groundwater resources such as the