Summer Crossword

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Across
  1. 1. the heavy mineral matter such as sand and gravel in water or sewers
  2. 3. the action of a flowing liquid as it lifts and carries away the material on the sides or bottom of a waterway, conduit or pipeline
  3. 4. a compartment usually underground in which water or wastewater is collected
  4. 6. main sewer or water line
  5. 12. the path in project management that is the sequence of project network activities adding up to the longest overall duration
  6. 14. structures, devices and appliances (other than pipe or conduit) that are integral parts of a sewerage system
  7. 16. a temporary endeavor designed to produce a unique product, service or result with a defined beginning and end
  8. 17. the leachate collection network under sand beds or a filter system
  9. 18. a device or meter that continually measures and sums a process rate variable in cumulative fashion over a given time period
  10. 20. the percentage of circulating water discharged as waste because of the increased concentration of a parameter such as dissolved solids
Down
  1. 1. a bar chart illustrating the start and finish dates of the terminal elements and summary elements of a project
  2. 2. any extraneous matter or impurities on the surface of a liquid
  3. 3. removing floating solids
  4. 5. a process of sludge conditioning in which certain constituents are removed by successive flushing with fresh water or plant effluent
  5. 7. a filter consisting of a cylindrical drum on a horizontal axis covered with a filter cloth
  6. 8. any process in which the flux density or energy decreases with increasing distance from the energy source
  7. 9. event used in project management to mark specific points along a project timeline
  8. 10. name of a brief safety meeting held to discuss activities for the day or week
  9. 11. a concrete surface used to protect bare soil from erosion due to splashing water
  10. 13. work that needs to be done to deliver a product, service or result
  11. 15. the bottom discharge from a clarifier or thickener
  12. 19. a controlled outlet on a pipeline, tank or conduit that is used to discharge water or gas accumulated