Kceh sw

  1. According to the United States Environmental Protection Agency, solid waste does NOT include
    • -manures and crop residues that can be returned to the soil as fertilizer or soil conditioners
    • -mining or milling wastes intended for return to the mine
    • -solid or dissolved material in domestic sewage
  2. Hazardous wastes include which of the following types of substances?
    • -chemical and biological
    • -radioactive
    • -explosive
  3. In order to determine the depth at which a sanitary landfill can be operated, which of the following must be determined?
    • -location of bedrock
    • -groundwater table
    • -finished grade
  4. To provide enough refuse for an incinerator to continuously operate, a refuse storage pit/bin must hold approximately
    2-4 days of refuse
  5. The wastewater generated from washing out refuse bins and containers
    • -can be disposed of with the garbage
    • -must pass through a grease trap before entering a sewerage system
    • -should not be allowed to run onto the surface of the ground
  6. The furnace temperature and burning rates of an incinerator can be controlled by adjusting
    • -the amount of overfire air
    • -the amount of under fire air
    • -the forced draft fan
  7. Collection cost is about ______ of the total cost of solid waste management
  8. The commonly acceptable refuse disposal and treatment methods are
    composting, recylcing, incineration, and sanitary landfilling
  9. Frequency of collection depends on
    • -quantity of waste
    • -time of year
    • -socioeconomic status of the area served
  10. In the rectangular furnace, the grates are arranged in
  11. Large items that are not recyclable should be
    • -placed in a separate area of the landfill for periodic burial
    • -compressed or shredded
  12. Oil that has had a physical and chemical impurities removed and that by itself or when blended with new oil or additives, is substantially equivalent or superior to new oil intended for the same purposes, is called
    re-refined oil
  13. The three essentials for combustion in an incinerator are
    time, temperature, and turbulence
  14. When considering a site for a sanitary landfill, both county and regional-wide planning and administration of the site should be considered because
    • -it could result in shorter travel distances and a lower unit of cost for operation
    • -the results could be more efficient and a lower unit cost for operation
    • -there will be less citizen opposition and shorter travel distances
  15. What does RCRA stand for?
    Resource Conservation and Recovery Act
  16. A county or regional landfill should provide enough area for a ______ period of operation
    20- to 40-year
  17. ______ is a thermochemical process for the conversion of complex organic solids in the absence of added oxygen, to water, combustible gases, tarry liquids, and stable residue.
  18. Methane in the presence of air is explosive at concentrations between
    5 and 15 percent
  19. The temperature of the gases leaving the furnace is reduced by
    • -spraying with water
    • -dilution with cool air
    • -passing through heat exchanges
  20. Volume reduction can be achieved by
    • -baling
    • -landfill equipment
    • -pulping
  21. Additional fuel is needed to incinerate refuse
    • -with 30 percent or less rubbish
    • -with 50 percent or more moisture
  22. Added moisture used in maceration ______ the handling and haul costs of solid waste
  23. In good soil and with appropriate geology, landfill sites should be at least ______ from streams, lakes, or other surface bodies of water.
    100 feet
  24. Determining what a landfill can be used for when completed should be planned
    before you build the landfill
  25. Before trying to convert an "open dump" into a sanitary landfill, you must first
    • -institute a rat-poisoning program 2 weeks before conversion
    • -develop a plan of operation, supervision, maintenance, and a drawing showing your proposed plans
  26. The best way to control deep fires in a sanitary landfill is to
    separate the burning refuse and dig a fire brake around the burning refuse
  27. The average amount of solid waste generated, collected, and disposed of from a particular area is dependent on many local factors such as
    • -time of the year
    • -education and economic status of the people
    • -whether the area is urban or rural
  28. Various garbage reduction processes extract biological fats that are then used in the manufacturing of
    soaps and glycerines
  29. In business districts, refuse, including garbage from hotels and restaurants, should be collected daily, except on
  30. The transfer station should be located ______ of the collection service area.
    in the center
  31. Systems used for treatment and disposal of animal wastes include
    • -field spreading, oxidation ditch, and incineration
    • -plow-furrow cover, aerated lagoon, and wet oxidation
    • -irrigation, anaerobic digestion, and drying
  32. Dead animals are best disposed in
    • -an incinerator or rendering plant
    • -separate area of sanitary landfill
  33. The most suitable soil for cover material at a landfill site is one that is
    easily worked and minimizes infiltration
  34. The home grinding system shreds garbage into small particles while being mixed with water and is discharged to the
    house sewer
  35. The life of a tractor at a landfill is figured to be about
    10,000 hours
  36. The normal economical hauling distance to a refuse disposal site is usually between
    10 to 15 miles
  37. The dumping of garbage and other refuse at sea in the United States is
  38. The amount of residue left after incineration is approximately
    10 to 15 percent of the original volume
  39. For hog feeding to be satisfactory, in addition to cooking of garbage, it is necessary to accomplish all of the following except
    allow garbage to cool down by adding 20% water
  40. Modern furnace walls are usually lined with
    tile or have water walls
  41. Which of the following composting methods will require limited land space?

    a. beccari method                                       b. bangalore process 
    c. fairfield-hardy process
    d. none of the above
    d.  none of the above
  42. The spread of ______ is (are) encouraged when uncooked garbage is fed to hogs
    • -trichinosis to humans
    • -hog cholera
    • -vesicular exanthema in swine
  43. The National Safety council reported that solid waste collection workers have an injury frequency approximately ______ times the national average for all industry
  44. Bulk containers or refuse bins are recommended where large volumes of refuse are generated, such as at
    • -hotels and motels
    • -shopping centers and restaurants
    • -apartment houses
  45. Compression or shredding of bulky objects before landfilling them will
    • -improve compaction of the fill
    • -reduce land volume requirements
    • -allow for more uniform settlement
  46. A relatively porous landfill earth cover will permit
    • -the escape of gases
    • -greater infiltration and leachate production
  47. The grinding of garbage is an acceptable method of
    garbage disposal
  48. Which of the following is not recommended for a refuse storage area?
    uncovered base
  49. After a landfill site is closed, it should be covered with at least ______ of compacted soil having a low permeability, graded to shed rainwater, melting snow, and surface water.
    2 feet
  50. The best sanitary landfill method for an area with rolling terrain is the
    area or ramp method
  51. Which of the following allows for 95 percent or more volume reduction of municipal solid wastes?
    • -pyrolysis
    • -high-temperature incineration
  52. Open dumps should be considered
    • -a cause of water pollution
    • -an odor and smoke nuisance           
    • -a fire hazard
  53. A dragline may be used at a landfill site for
    • -digging trenches
    • -stockpiling cover material           
    • -placing cover material over refuse
  54. The most common problems associated with the disposal of hazardous waste are
    • -public opposition and spills           
    • -groundwater pollution from lagoons and unauthorized dumping           
    • -leachate from landfills, dumps, sludge disposal, and other land disposal systems
  55. One piece of refuse-compaction and earth-moving equipment is needed at the landfill site for approximately each
    80 loads per day
  56. Depending on the size of the community, there should be a minimum of one man at a landfill site and ______ men per 1000 yd3 of waste dumped per day that the site is open.
  57. Which of the following is not one of the four characteristics of hazardous wastes as defined by the Environmental Protection Agency?

    A. radioactivity
  58. ______ reduces the final volume of wastes
    • -compaction
    • -maceration
  59. The valley or ravine landfill method utilizes "lifts" from the bottom up with depths usually of
    8 to 10 feet
  60. The direction of operation of a sanitary landfill should be
    with the prevailing wind
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