William M Lewis

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1) Improvements in the Colorado ammonia model by simultaneous computations of extremes in flow and water chemistry

Author

Lewis, William M

Series

Completion report volume no. 178

Pub. Date

[1993]

2) Analysis of total maximum daily load (TMDL) for nitrate in the urban region of the South Platte River, with emphasis on segment 14

Author

Lewis, William M

Pub. Date

2003.

Description

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This report summarizes the results of an analysis of nitrate concentrations in the South Platte River between Chatfield Dam and the Burlington Ditch headgate (Upper South Platte Segments 6c and 14). The analysis is applicable to present and future conditions. Because the context for the analysis is a TMDL for nitrate, all influences on loads and concentrations of nitrate are taken into account as fully as possible on the basis of monitoring data,...

3) Studies of environmental effects of magnesium chloride deicer in Colorado

Author

Lewis, William M

Pub. Date

[1999]

Description

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The overall conclusion of the study is that application of magnesium chloride deicer having a chemical composition and application rate similar to those of 1997-98 is highly unlikely to cause or contribute to environmental damage at distances greater than 20 yards from the roadway. Even very close to the roadway, the potential of magnesium chloride deicer to cause environmental damage is probably much smaller than that of other factors related to...