An environmental analyst wants to determine the amount of BOD in Pasig River. Prior to incubation, the sample was diluted to 30:300. The laboratory analysis shows that the initial DO of the sample is 20 mg/L and after 5 days this drops to 15 mg/L. If the BOD5 limit for Pasig River is 7 mg/L, determine which of the following statements is true.
An environmental analyst wants to determine the amount of BOD in Pasig River. Prior to incubation, the sample was diluted to 30:300. The laboratory analysis shows that the initial DO of the sample is 20 mg/L and after 5 days this drops to 15 mg/L. If the BOD5 limit for Pasig River is 7 mg/L, determine which of the following statements is true.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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An environmental analyst wants to determine the amount of BOD in Pasig River. Prior to incubation, the sample was diluted to 30:300. The laboratory analysis shows that the initial DO of the sample is 20 mg/L and after 5 days this drops to 15 mg/L. If the BOD5 limit for Pasig River is 7 mg/L, determine which of the following statements is true.
a) The BOD5 conforms with the standard, therefore the water is not polluted.
b) The BOD5 is way below the allowable limit, therefore the water is polluted.
c) The BOD5 is exactly within the allowable limit, therefore the water is not polluted.
d) The BOD5 exceeded the allowable limit, therefore the water is polluted.
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