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(k) During biological N removal, what happens in the anoxic zone? i) NOx generation ii) High in NOx iii) Converting NOx to N2 iv) No additional organic addition (1) Which EPA requirement should be fulfilled to apply biosolids to land without further pathogen regulation? i) Class A requirement iii) 1st biosolids requirement (m) Which is more acutely toxic? i) LD50 5 mg/kg BW ii) Class B requirement iv) Class 1 requirement ii) LD50 1000 mg/kg BW (n) Under what circumstances can a registered engineer sign and seal plans or documents he/she did not prepare? i) Registered engineers can coordinate projects that include segments that they are not competent in if a qualified registered engineer signs and seals plans or documents for those segments of the project iii) If the plans or documents were prepared by someone under the registered engineer's direct supervision and the registered engineer is an expert in the subject matter. ii) Under no circumstances. iv) When practicing in a state different than the one in which the engineer is registered. (o) Which approach treats the most municipal solid waste in the US? i) Landfilling iii) Recycling ii) Combustion iv) Composting

(k) During biological N removal, what happens in the anoxic zone? i) NOx generation ii) High in NOx iii) Converting NOx to N2 iv) No additional organic addition (1) Which EPA requirement should be fulfilled to apply biosolids to land without further pathogen regulation? i) Class A requirement iii) 1st biosolids requirement (m) Which is more acutely toxic? i) LD50 5 mg/kg BW ii) Class B requirement iv) Class 1 requirement ii) LD50 1000 mg/kg BW (n) Under what circumstances can a registered engineer sign and seal plans or documents he/she did not prepare? i) Registered engineers can coordinate projects that include segments that they are not competent in if a qualified registered engineer signs and seals plans or documents for those segments of the project iii) If the plans or documents were prepared by someone under the registered engineer's direct supervision and the registered engineer is an expert in the subject matter. ii) Under no circumstances. iv) When practicing in a state different than the one in which the engineer is registered. (o) Which approach treats the most municipal solid waste in the US? i) Landfilling iii) Recycling ii) Combustion iv) Composting

Solid Waste Engineering
Solid Waste Engineering
3rd Edition
ISBN:9781305635203
Author:Worrell, William A.
Publisher:Worrell, William A.
Chapter6: Biological Processes
Section: Chapter Questions
Problem 6.6P
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(k) During biological N removal, what happens in the anoxic zone? i) NOx generation ii) High in NOx iii) Converting NOx to N2 iv) No additional organic addition (1) Which EPA requirement should be fulfilled to apply biosolids to land without further pathogen regulation? i) Class A requirement iii) 1st biosolids requirement (m) Which is more acutely toxic? i) LD50 5 mg/kg BW ii) Class B requirement iv) Class 1 requirement ii) LD50 1000 mg/kg BW (n) Under what circumstances can a registered engineer sign and seal plans or documents he/she did not prepare? i) Registered engineers can coordinate projects that include segments that they are not competent in if a qualified registered engineer signs and seals plans or documents for those segments of the project iii) If the plans or documents were prepared by someone under the registered engineer's direct supervision and the registered engineer is an expert in the subject matter. ii) Under no circumstances. iv) When practicing in a state different than the one in which the engineer is registered. (o) Which approach treats the most municipal solid waste in the US? i) Landfilling iii) Recycling ii) Combustion iv) Composting
Transcribed Image Text:(k) During biological N removal, what happens in the anoxic zone? i) NOx generation ii) High in NOx iii) Converting NOx to N2 iv) No additional organic addition (1) Which EPA requirement should be fulfilled to apply biosolids to land without further pathogen regulation? i) Class A requirement iii) 1st biosolids requirement (m) Which is more acutely toxic? i) LD50 5 mg/kg BW ii) Class B requirement iv) Class 1 requirement ii) LD50 1000 mg/kg BW (n) Under what circumstances can a registered engineer sign and seal plans or documents he/she did not prepare? i) Registered engineers can coordinate projects that include segments that they are not competent in if a qualified registered engineer signs and seals plans or documents for those segments of the project iii) If the plans or documents were prepared by someone under the registered engineer's direct supervision and the registered engineer is an expert in the subject matter. ii) Under no circumstances. iv) When practicing in a state different than the one in which the engineer is registered. (o) Which approach treats the most municipal solid waste in the US? i) Landfilling iii) Recycling ii) Combustion iv) Composting
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