Final 153 05 and Solutions

Final 153 05 and Solutions - UNIVERSITY OF CALIFORNIA LOS...

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Page 1 of 6 UNIVERSITY OF CALIFORNIA, LOS ANGELES Civil and Environmental Engineering Department CEE 153 Introduction to Environmental Engineering Science Fall Term 2005 T-Th 2-4 PM 5200 Math Science Prof. K. D. Stolzenbach 5732J Boelter Hall, 206-7624 [email protected] Final Examination (3:00 – 6:00 PM, December 13, 2005) _____________________________________________________________________________ PLEASE NOTE THE FOLLOWING Students are allowed to bring the information sheets brought to the mid-term and one additional sheet (both sides, approximately 8.5 × 11 inches) of summary notes with them into the examination room. No other material such as texts, class notes, or homework is permitted. This exam has four problems with multiple parts. The credit for each part is indicated. Before you start, make sure all pages of your examination copy are legible. The last page of the exam contains information that may be useful in solving the problems. Credit will be given for problems worked correctly even if the correct numerical answer is not obtained. Be sure to indicate clearly how you are approaching the problem. Answers obtained in correct algebraic form with defined variables and parameters will be given full credit. There are no long or tricky answers. If you find yourself doing anything long or tricky, stop and reevaluate your approach. In general, getting the correct answer to one sub-part of a problem should not depend on solving the other parts of the same problem, although you may need to use information given in another sub-part. If you have to leave the room for any reason during the exam, please do so quietly without asking. If you have a question during the exam, raise your hand and, if you are in the center of a row, come to the side isle.
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Page 2 of 6 1. Briefly answer any three of the following questions: 3% i) What is the major objective of primary wastewater treatment? 3% ii) What process does the unit Ci represent? 3% iii) Why do humans need the hydrologic cycle? 3% iv) Describe one problem encountered in using stream standards to regulate water quality. 3% v) Why are nutrients a water quality problem? 3% vi) Why are bacteria recycled in an activated sludge process? 3% vii) Why is the ozone concentration usually greater over the eastern part of Los Angeles? 3% viii) Describe one major uncertainty in predicting the future magnitude of global warming. 3% ix) Why is low dissolved oxygen a problem? 3% x) What is the difference between BOD and COD? Note: Credit will be given for only three of the above questions. If more than three are answered, the first three will be graded.
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Page 3 of 6 2. A landfill containing toxic waste has a bottom area of A L = 10 4 m 2 . Leachate from the land fill (water infiltrating through the bottom and into the soil) containing toxic material
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This note was uploaded on 05/19/2011 for the course CEE 153 taught by Professor Stolzenbach during the Fall '08 term at UCLA.

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Final 153 05 and Solutions - UNIVERSITY OF CALIFORNIA LOS...

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