Which of the following chemical agents would be considered to have the greatest flammability hazard?
(A) Chemical with flashpoint of 50 degrees F (B) Chemical with flashpoint of 100 degrees F (C) Chemical with flashpoint of 225 degrees F (D) Chemical with flashpoint of 300 degrees F 4. In wastewater analysis BOD means (A) Biological Oxygen Digestion. (B) Biochemical Oxygen Demand. (C) Biochemical Organic Demand. (D) Biological Organic Digestion. 5. The NPDES system of the Clean Water Act sets enforceable limitations on (A) the type of pollutants that can be discharged. (B) the quantities of pollutants that can be discharged. (C) both (A) and (B). (D) neither (A) or (B). 6. Ten parts per million is equivalent to (A) 1,000 parts per billion. (B) 10,000 parts per billion. (C) 100,000 parts per billion. (D) none of the above. 7. Benzene has been discovered under a commercial office building. The extent of the contaminant plume is believed to only occupy the Northwestern 1/8th of the property, under an existing paved parking lot. The property is bordered on the South and West sides by city
