EnvironmentalIntermediateArizona Exam

The 'Clean Water Act' regulates discharge into 'waters of the United States,' which in Arizona includes:

AOnly perennial rivers and permanent lakes that are physically navigable by commercial watercraft throughout the entire year, excluding all seasonal or intermittent water features

BNavigable waters and their tributaries, which in Arizona may include ephemeral and intermittent streams (washes) that flow only during rain events—a major consideration given Arizona's desert geographyCorrect

COnly water bodies located on or immediately adjacent to federal land including national forests, BLM land, military reservations, and Indian reservations in Arizona

DAll water features found on private property including swimming pools, ornamental ponds, irrigation retention basins, and decorative fountains that contain standing water

Why Navigable waters and their tributaries, which in Arizona may include ephemeral and intermittent streams (washes) that flow only during rain events—a major consideration given Arizona's desert geography Is Correct

Answer B: Navigable waters and their tributaries, which in Arizona may include ephemeral and intermittent streams (washes) that flow only during rain events—a major consideration given Arizona's desert geography

Waters of the United States has been an evolving legal definition, but has generally included navigable waters and tributaries. In Arizona, this is significant because many washes and arroyos are ephemeral (flow only during rain).

Exam Tip: Environmental

Environmental questions test knowledge of hazards like asbestos, lead-based paint, radon, and mold. Know the disclosure requirements and when a professional inspection is required. CERCLA liability is strict, joint, and several.

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