Practice Test Geeks(CESSWI) Certified Erosion, Sediment, and Storm Water Inspector Practice Test
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Erosion Control BMPs Flashcards

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

Read the first 7 Erosion Control BMPs flashcards as text

  1. Which factor most directly determines the appropriate spacing of contour wattles on a slope?

    Answer: Slope steepness and wattle diameter

    Spacing of contour wattles is primarily determined by slope steepness and wattle diameter, with steeper slopes requiring closer spacing.

  2. A hydroseeding operation fails to establish vegetative cover within the specified timeframe. What is the FIRST corrective action an inspector should require?

    Answer: Reapply hydraulic mulch and seed to bare areas

    Reapplying hydraulic mulch and seed to bare areas addresses the establishment failure directly and maintains the erosion control intent.

  3. What minimum ground cover percentage is typically required before temporary erosion controls can be removed from a stabilized slope?

    Answer: 85%

    Most regulatory standards, including NPDES Construction General Permits, require 70–80% vegetative cover; 85% is the typical conservative threshold for final stabilization.

  4. Crimped straw mulch without tackifier is MOST effective when used in which situation?

    Answer: Flat to gently sloping areas with wind protection

    Crimped straw mulch without tackifier is best suited for flat to gently sloping areas where wind and slope forces won't dislodge it.

  5. Which erosion control BMP provides both sediment filtering and slope stability reinforcement simultaneously?

    Answer: Erosion control blanket (ECB)

    Erosion control blankets protect the soil surface from raindrop impact and runoff while also reinforcing slope stability as vegetation establishes.

  6. When inspecting a compost sock installation, which deficiency would be MOST critical to flag?

    Answer: Sock not staked and migrated downslope

    An unstaked compost sock that has migrated downslope is no longer functioning as a contour barrier and must be repositioned and secured.

  7. On a construction site, polyacrylamide (PAM) is PRIMARILY used to:

    Answer: Flocculate fine particles and reduce turbidity in runoff

    PAM is a soil amendment that causes fine clay and silt particles to clump (flocculate), reducing turbidity in stormwater runoff.