Across
- 3. Gas produced from anaerobic digestion
- 4. Barrier that prevents vehicles from leaving roadway
- 5. Detailed construction drawing
- 6. Raised structure of compacted earth
- 8. Rate of water flow in a channel
- 9. Framework of connected triangular units
- 12. The message of this crossword
- 14. Preventing water flow in soil or foundations
- 15. Vegetated rooftop for stormwater and energy benefits
- 18. Gradual downward movement of soil
- 20. Semi-solid byproduct of wastewater treatment
- 21. Measuring land to determine points and layout
- 23. Soil layer beneath pavement
Down
- 1. Ability of soil to transmit water
- 2. Modification to construction contract
- 5. Drilled hole for soil sampling
- 7. Underground layer storing groundwater
- 10. Material used for road surfaces
- 11. Instrument used to measure air pressure
- 13. Base that transfers structural loads to the ground
- 16. Gauge used to measure precipitation
- 17. Distance wind travels over water surface
- 19. Pollutants released into the atmosphere
- 22. Circular intersection improving traffic flow