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and the location of the trip generators . A requirement of the proposed Conditional Use Permit should be that no through company trucks shall use Holly Drive south of 1-205 to access the site. Transfer trucks will haul the accumulation of refuse from the PROJECT to the Foothill site, San Joaquin County Landfill for permanent disposal. A requirement of the proposed Conditional Use Permit should be that, because 100% of these trips will be to and from the east on 1-205, all transfer trucks shall use Larch Road to Holly Drive to Arbor Road to MacArthur Drive to 1-205 . Figure 3 shows the directional distribution assigned to the roadway network. C. Cumulative Growth To evaluate the future peak hour traffic conditions at the study intersections, a growth scenario was applied resulting in LOS projections to the year 2000 both with and without the traffic resulting from the PROJECT. The growth scenario assumes that the PROJECT's refuse handling capabilities , the PROJECT's traffic generation rate, and City traffic volumes in general will increase uniformly with the population increase of the City. The estimated population increase of the City considers two independent growth estimates . First, the San Joaquin County's "Waste Stream Quantity Analysis" , dated February 6 , 1990, estimates the growth of refuse at Tracy as 5% per year. Second, the estimated population increase in Tracy as estimated in the "Forecast of the Demand for Land Uses in Tracy, 1987-2010" by Greun Greun and Associates, January, 1988 . The projected population for the City of Tracy in 2010 according to Greun Greun is about 84, 000 which is an increase of 186% over the existing population of 29 ,400 . This results in a 9 . 3% per year increase over the existing population if the City growth is assumed to be uniform over time (i.e. , linear rate of change) . The growth scenario resulting in the most appropriate method of estimating future traffic demand in the subject area, including that which will result from the project, must consider both of the above growth estimates . Therefore, the year 2000 was chosen for the traffic analysis as a reasonable estimate for the station exceeding the 500 ton per day capacity. This assumes a growth rate greater than the San Joaquin County estimate of 5% per year, but less than Greun Greun estimate of 9 . 3% per year growth. The calculated growth rate to be used in the traffic projections is therefore 7 . 1% based on a linear increase to 500 tons per day in 2000. Not specifically considered by this growth scenario are the unknown effects of the nearby 100 year flood plane (see figure 3) , the future, unknown localized variations in traffic demand 5