Landfill Siting Rules Assessed

This section evaluates the provided statements concerning the siting and regulation of landfills.

Statement 1: Wastewater Facility Proximity

Statement 1 suggests landfills must be close to wastewater treatment facilities. While not a strict universal requirement, proximity can be advantageous for integrated waste management. For instance, treated biosolids might be disposed of in landfills, or landfill leachate might be managed by wastewater treatment plants. This potential synergy means the statement can be considered correct in specific operational or regulatory contexts.

Statement 2: Airport Siting Compatibility

Statement 2 asserts that landfills are incompatible with airport siting. This statement is correct. Landfills attract wildlife, particularly birds, which pose a significant hazard to aircraft safety (bird strikes). Consequently, landfill locations are typically restricted or prohibited near airports to ensure aviation security.

Statement 3: Groundwater Elevation Concerns

Statement 3 posits that the landfill's bottom must be below the highest expected groundwater elevation. This statement is incorrect. To prevent groundwater contamination, landfill design requires the base, including the liner system, to be sited sufficiently above the highest anticipated groundwater level. This separation is crucial for environmental protection.

Correct Landfill Statements Identified

Based on the analysis:

• Statement 1 is considered correct due to potential benefits in integrated waste management.
• Statement 2 is correct because landfills present a safety hazard to airports.
• Statement 3 is incorrect as it contradicts the principle of groundwater protection.

Therefore, statements 1 and 2 are the correct ones regarding landfill siting.