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~ additional employees necessary for 1.3-million TPY. As shown in the <br />. previous section, 95 workers will be added to the mine work force at <br />1.3-million TPY. For the additional truck-haul shift, five extra workers <br />(drivers) will be needed, one for each truck. Assuming two employees/car, <br />L <br />an additional 50 vehicles will be added during the peak hour. <br />f <br />- Other Vehicle Trips: <br />`' As computed above, the AWD volume on SH 133 is currently 2316. During <br />the period of the traffic counts, there was an average of 201 coal truck-trips <br />per day. Subtracting the 201 truck-trips, ]eaves 2]15 trips which include the <br />r~ <br />~i,. present employee commuting traffic. <br />Using the 30ro straight-line growth over a 20-year period as the normal <br />'~ growth gives a 1982 value of approximately 2178 vehicles/day exclusive of <br />coal truck traffic and the additional employee commuting traffic. The <br />,.. peak-hour volume was obtained by multiplying this number by 10% (estimated <br />above to be a reasonable peak-hour factor) giving a value of 218 vehicles/hour. <br />f, <br />i.~ Total Peak-Hour Volume: <br />The total estimated peak-hour volume in 1982 was computed to be: <br />r <br />23 coal-haul truck-trips plus 50 additional employee <br />commuting trips plus 218 other vehicle trips (including <br />`= present employee commuting trips) = 291 vehicles/hour. <br />C <br />This volume is considerably less than 474 vehicles/hour permissible at <br />,• level of service C operation. <br />-16- <br /> <br />