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WSPC06132
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Last modified
1/26/2010 12:04:38 PM
Creation date
10/9/2006 5:42:39 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8200.700
Description
Colorado River Basin General Publications - Augmentation-Weather Modification
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
3/1/1983
Title
Simulation of the Costs of Removing Snow from County Highways in Colorado
Water Supply Pro - Doc Type
Report/Study
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<br />000029 <br /> <br />FOremen in different counties reported different amounts of time to <br />clear given amounts of snow. RemOval strategies also vary: in some <br />counties all operators are sent out initially, but in others, only some <br />are sent out unless snowfall is heavy. Variations in reported times and <br />strategies do not appear to be related to the size or topography of the <br />counties studied. <br /> <br />'!be average number of hours required per employee (operators and <br />foremen) to relOOw given amounts of snow in Lake, Eagle and San Juan <br />counties is plotted in ,Figure 5. (Average number of hours is plotted <br />because in some counties only a portion of the available operators are <br />sent out when snowfall is light.) Lake and Eagle are shown because <br />their reported hours are typical of most counties studied; San Juan is <br />shown because its relOOval strategy is unique. <br /> <br />All counties studied reported that the effort required to relOOve <br />snow increases rapidly when snowfall exceeds one or tlolO inches: relOOving <br />four or six inches of snow requires all operators to loIOrk a full day. <br />Removing nine or ten inches requires little more effort than relOOving six <br />inches, however, since the operating speed of the equipnent remains <br />fairly constant. llmounts greater than ten inches were reported to <br />require overtime in all counties studied except San Juan. San Juan uses <br />a bolo-shift system during larger storms: each employee loIOrks an eight <br />hour shift, and the remaining snow is left until the next day. <br /> <br />Average number of hours per employee for mop-up in Lake County, La <br />Plata County, Durango district and ~utt County, Steamboat district are <br />plotted in Figure 6. Times for mop-up in these counties, and in the <br />other counties studied increase steadily as snow amounts increase. <br />U'llike times for initial relOOval of snow, reported mop-up times do not <br />level off for snow amounts between four and ten inches. Times for mop-up <br />do not appear to be related to the size or topography of the counties <br />studied. <br /> <br />-16- <br />
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