Soil Erosion & Sedimentation Control Training - Unit 3

21 Questions | Total Attempts: 74

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Soil Erosion & Sedimentation Control Training - Unit 3 - Quiz

Study exam for the Soil Erosion and Sedimentation Control Training - Unit 3


Questions and Answers
  • 1. 
    The best way to prevent erosion is to remove the minimum amount of _____________  and re-establish it as soon as possible.
    • A. 

      Vegetation

    • B. 

      Topsoil

    • C. 

      Ground cover

    • D. 

      Water

  • 2. 
    A critical area is  ____________________ to stabilize with vegetation.  Whenever possible, critical areas should not be  _________________.
    • A. 

      Easy, re-established

    • B. 

      Difficult, uncovered

    • C. 

      Diffcult, disturbed

    • D. 

      Easy, disturbed

  • 3. 
    A non-critical area is an area on which vegetation can be established without _____________.
    • A. 

      Stabilization

    • B. 

      Water

    • C. 

      Ease

    • D. 

      Difficulty

  • 4. 
    Sensitive areas are those areas next to __________ or __________ that can be easily damaged by sediment.
    • A. 

      Forest, fields

    • B. 

      Lakes, streams

    • C. 

      Rivers, creeks

    • D. 

      Slopes, mountains

  • 5. 
    Vegetation stabilization can be either ______________ or _____________.
    • A. 

      Difficult, easy

    • B. 

      Hard, easy

    • C. 

      Temporary, permanent

  • 6. 
    Legumes furnish _________________ to the soil,  an important plant nutrient.
    • A. 

      Nitrogen

    • B. 

      Acid

    • C. 

      Oxygen

    • D. 

      Moisture

  • 7. 
    When selecting plant materials for stabilization, consideration should be given to: (choose the answers that most apply)
    • A. 

      Site use and maintenance

    • B. 

      Slopes

    • C. 

      Soil

    • D. 

      Climate

    • E. 

      Soil moisture content

  • 8. 
    Consideration should be given to on-site soil conditions such as:  (choose the answers that most apply)
    • A. 

      Soil moisture content

    • B. 

      Nitrogen content

    • C. 

      Fertility

    • D. 

      Acidity

    • E. 

      PH levels

  • 9. 
    Subsoils are generally low in ___________ and are __________.
    • A. 

      PH, acid

    • B. 

      Moisture, dry

    • C. 

      Acidity, fertile

    • D. 

      Fertility, acid

  • 10. 
    Topsoil should be _____________ at the beginning of grading operations for later use.
    • A. 

      Saved

    • B. 

      Removed

    • C. 

      Washed

    • D. 

      Fertilized

  • 11. 
    When slopes are steeper the _________ (horizontal/vertical), structures may be more effective to control erosion than vegetation.
    • A. 

      3:1

    • B. 

      4:1

    • C. 

      2:1

  • 12. 
    Soil pH should be no lower that ________ for most grasses and no lower that __________ for legumes.
    • A. 

      6.5, 4.5

    • B. 

      4.5, 5.5

    • C. 

      6.5, 5.5

    • D. 

      5.5, 6.5

  • 13. 
    The amount of lime and/or fertilizer required for good vegetative growth can be determined through ______________________.
    • A. 

      Soil moisture content

    • B. 

      Area inspection

    • C. 

      Soil testing

    • D. 

      PH levels

  • 14. 
    Three factors that contribute to soil slippage are:
    • A. 

      Poor bonding

    • B. 

      Slope steepness

    • C. 

      Lack of top dressing

    • D. 

      Low moisture content

    • E. 

      High moisture content

  • 15. 
    The four methods for establishing vegetation are:
    • A. 

      Seeding

    • B. 

      Top dressing

    • C. 

      Sprigging

    • D. 

      Sodding

    • E. 

      Planting a root-balled or container grown shrub or tree

  • 16. 
    Sprigging involves planting _____________  of live vegetation.
    • A. 

      Selections

    • B. 

      Containers

    • C. 

      Sprigs

    • D. 

      Seedlings

  • 17. 
    It is important that ________________  and ______________ be done as soon as the seedbed is ready.
    • A. 

      Top dressing, watering

    • B. 

      Seeding, mulching

    • C. 

      Sprigging, mulching

    • D. 

      Top dressing, seeding

  • 18. 
    _________________  insulates the soil from intense heat and cold, and conserves  ____________.
    • A. 

      Mulch, moisture

    • B. 

      Straw, seeds

    • C. 

      Top dressing, water

    • D. 

      Sodding, moisture

  • 19. 
    _________________  is the most commonly used mulch material.
    • A. 

      Leaves

    • B. 

      Paper

    • C. 

      Straw

    • D. 

      Bark

  • 20. 
    The two types of maintenance required for vegetation stabilization are:  _____________  and  _______________.
    • A. 

      Seeding, mulching

    • B. 

      Follow-up, periodic

    • C. 

      Sprigging, sodding

  • 21. 
    Areas planted in the fall should be inspected in the ______________.
    • A. 

      Winter

    • B. 

      Spring

    • C. 

      Summer

    • D. 

      Fall

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