Practice Test Geeks(ETC) Engineering Technician Certification Practice Test
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ETC Environmental Engineering & Sustainability Flashcards

6 cards from real ETC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 ETC Environmental Engineering & Sustainability flashcards as text

  1. What is the primary purpose of a detention basin in stormwater management?

    Answer: To temporarily store runoff and release it at a controlled rate to reduce downstream flooding

    A detention basin holds stormwater temporarily and releases it slowly through an outlet structure, attenuating peak flows to pre-development rates.

  2. What is erosion control on a construction site focused on preventing?

    Answer: Detachment and movement of soil particles by wind or water

    Erosion control measures such as seeding, mulching, and erosion control blankets prevent soil particles from being detached and transported by stormwater or wind.

  3. What is the significance of the 100-year floodplain in US land development regulations?

    Answer: It is the area with a 1% annual chance of flooding, used as a regulatory boundary for development restrictions

    The 100-year floodplain (1% annual chance flood) is FEMA's base flood boundary used to regulate development and require flood insurance.

  4. What does green infrastructure refer to in urban stormwater management?

    Answer: Nature-based systems like bioswales, rain gardens, and permeable pavement that manage stormwater on-site

    Green infrastructure uses natural or engineered systems that mimic natural hydrology to capture, infiltrate, and treat stormwater close to where it falls.

  5. What is a Tier II report required under US environmental law?

    Answer: An annual inventory of hazardous chemicals stored on-site submitted to local emergency planners under EPCRA

    EPCRA Section 312 requires facilities storing hazardous chemicals above threshold quantities to submit Tier II reports annually to state and local emergency planning committees.

  6. What is the purpose of an oil-water separator in industrial or construction site drainage?

    Answer: To separate petroleum hydrocarbons from stormwater or process water before discharge

    An oil-water separator uses gravity and sometimes coalescing media to remove free-floating petroleum products from runoff before it is discharged.