6-40. Using question 6-39, what total number of tons of aggregate is required for this task? 1. 1548.8 2. 2323.2 3. 3097.6 4. 3872.2 6-41. Using equation 2, a total of how many pounds per square inch would a 4-inch asphalt mat equal? 1. 146 2. 110 3. 220 4. 440 6-42. A total of how many tons of asphalt is required for a parking lot 120 feet long, 60 feet wide, 2 inches thick, with 5 percent waste  factor? 1. 33 2. 46 3. 92 4. 331 6-43. The required tonnage of hot-mix asphalt for a project is 300 tons. The screed of the paver is set at 12 feet, and the depth of asphalt is 2 inches. Estimate the amount of asphalt that can be laid per hour? 1. 34.68 2. 80.46 3. 96.55 4. 102.4 6-44. When using the horn signal system, what does two blasts of the horn mean? 1. Stop 2. Go forward 3. Turn around 4. Back up 6-45. In which underground zone, if any, should a water well be developed? 1. Plant  zone 2. Saturated 3. Aeration 4. None 6-46. Which of the following belts is NOT part of the zone of aeration? 1. Soil  moisture 2. Intermediate 3. Saturation 4. Capillary  fringe 6-47. What is the name of the water contained in the zone of aeration? 1. Subsurface water 2. Ground water 3. Soil water 4. Surface water 6-48. What formation is porous and permeable  and  can  yield  usable quantities  of  water? 1. Artesian 2. Alluvial basin 3. Aquifer 4. Capillary  fringe 6-49. An artesian well is a source of fresh  water  flowing  freely  from an aquifer in which the water pressure  exceeds  atmospheric pressure. 1. True 2. False 6-50. Which of the following rock formations  is  most  likely  to produce  water  in  usable quantities? 1. Igneous 2. Sedimentary 3. Alluvial 4. Metamorphic Learning  Objective: Identify fundamentals  of  developing sources of ground water. 45