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Difficulty: MediumInference and Logical Deduction

Read the following passage carefully:

In 2025, the State Ministry of Mining and Urban Environment introduced the Sub-Surface Geothermal Extraction and Aquifer Preservation Guidelines to regulate deep-well geothermal energy extraction across metropolitan zones. The framework stipulates that any municipal energy developer operating a geothermal extraction well deeper than 500 meters must install continuous micro-seismic and hydrostatic pressure sensors. Furthermore, if hydrostatic pressure drops below baseline thresholds for more than 48 consecutive hours, extraction operations must be immediately suspended to prevent localized subsidence and groundwater contamination. However, municipal entities operating shallow geothermal closed-loop systems (under 200 meters) are exempt from installing continuous telemetry sensors, provided they submit bi-annual manual groundwater testing reports. Notably, no new extraction licenses are issued to private entities in zones designated as critical groundwater reserves, regardless of depth or technology used. While municipal energy developers in non-critical zones receive subsidized sensor installation, all operational compliance costs must be borne entirely by the developers.

Based on the passage provided, which of the following statements can be logically inferred?

  1. A municipal energy developer operating a 600-meter geothermal extraction well in a non-critical zone is eligible for sensor installation subsidies but must cover its own operational compliance costs.Answer
  2. Private entities are prohibited from obtaining new geothermal extraction licenses in designated critical groundwater reserves even if their proposed projects utilize shallow closed-loop systems under 200 meters.Answer
  3. C
    Shallow geothermal closed-loop systems operating under 200 meters are exempt from all environmental compliance and monitoring requirements under the 2025 guidelines.
  4. D
    Hydrostatic pressure drops in geothermal wells exceeding 500 meters are primarily caused by unauthorized private extraction activities in adjacent zones.

Answer

The valid inferences are: (1) A municipal energy developer operating a 600-meter geothermal extraction well in a non-critical zone is eligible for sensor installation subsidies but must cover its own operational compliance costs, and (2) Private entities are prohibited from obtaining new geothermal extraction licenses in designated critical groundwater reserves even if their proposed projects utilize shallow closed-loop systems under 200 meters.
The correct statements are derived directly from explicit facts in the passage: (1) Deep wells (>500m) in non-critical zones qualify for sensor installation subsidies while operational compliance remains the developer's responsibility; and (2) The ban on new private extraction licenses in critical groundwater reserves applies across all depths and technologies, including shallow closed-loop systems under 200m.

Step-by-Step Solution

1
Analyze the conditions for deep wells, subsidies, and compliance costs.
A 600-meter well exceeds 500 meters, requiring continuous sensors. In non-critical zones, municipal developers receive subsidized sensor installation, but must pay operational compliance costs. Thus, the statement regarding a 600-meter well developer receiving subsidies for installation while bearing operational costs is logically necessary.
Synthesizing explicit parameters (depth > 500m, non-critical zone subsidy, compliance cost burden) leads directly to this deduction.
2
Analyze the prohibition regarding private entities in critical zones.
The text states that no new extraction licenses are issued to private entities in critical groundwater reserves 'regardless of depth or technology used'. Shallow systems under 200 meters fall under 'any depth or technology', so private entities cannot receive licenses for them in critical zones.
Deductively applying a universal negative constraint ('regardless of depth or technology') validates this statement.
3
Evaluate the remaining options against passage facts.
Claiming complete exemption for shallow systems misreads the text, which requires bi-annual manual reports. Claiming private extraction causes pressure drops introduces unstated external causes not present in the passage.
Eliminate options that contradict text details or depend on external assumptions.

Key Concept

Inference and Logical Deduction
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Inference and Logical Deduction

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