Practice Test Geeks(CFS) Certified Floodplain Surveyor Practice Test
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Quality Control & Process Improvement Flashcards

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

Read the first 7 Quality Control & Process Improvement flashcards as text

  1. A CFS project manager wants to reduce the cycle time for processing Elevation Certificate (EC) data. Using a Lean process improvement approach, what is the first analytical step?

    Answer: Map the current-state value stream to identify waste and bottlenecks

    Lean methodology begins with current-state value stream mapping to visualize process flow, identify non-value-added steps, and locate bottlenecks before implementing changes.

  2. Which condition would trigger a mandatory QC re-survey of floodplain cross-sections according to standard surveying practice?

    Answer: Closure error on a level loop exceeds the allowable tolerance

    A level loop closure error exceeding allowable tolerance is an objective, measurable trigger that invalidates the vertical control and requires re-survey.

  3. During a PDCA (Plan-Do-Check-Act) cycle applied to LOMR preparation quality, the 'Check' phase specifically involves:

    Answer: Comparing pilot results against predefined success metrics

    The 'Check' phase of PDCA involves analyzing pilot results against the success criteria established in the 'Plan' phase to determine if the change achieved the intended improvement.

  4. What is the purpose of a calibration log maintained for total station instruments used in floodplain surveys?

    Answer: To provide traceability of instrument accuracy to a recognized measurement standard over time

    A calibration log provides a traceable record demonstrating that instrument accuracy has been verified against a recognized standard, supporting the defensibility of survey results.

  5. A quality review of SFHA boundary delineation finds that a floodway encroachment analysis used an incorrect Manning's n value for a reach. Which process improvement action best prevents recurrence?

    Answer: Add a mandatory field in the project database requiring supervisory sign-off on roughness coefficients

    Adding a mandatory supervisory sign-off field creates a process control that makes it structurally impossible to advance the project without verifying the critical parameter.

  6. When a CFS surveyor computes a GPS-derived orthometric height, which QC check is specifically recommended to validate the geoid model application?

    Answer: Comparing ellipsoidal heights to published geodetic benchmarks

    Comparing GPS-derived orthometric heights to published NAVD 88 benchmarks validates that the geoid model (GEOID18 or current) was correctly applied and yields acceptable residuals.

  7. In a Six Sigma quality framework applied to floodplain mapping, what does DPMO stand for and why is it relevant?

    Answer: Defects Per Million Opportunities — quantifies process quality to enable benchmarking and improvement targets

    DPMO (Defects Per Million Opportunities) standardizes defect rates across processes of different scales, enabling meaningful quality benchmarking and Six Sigma level targets.