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bunch up into waves with vehicles passing a fixed point approximately every 2 seconds interspersed with longer periods during which no vehicles pass the point. A wave of 6 vehicles is typical which occupies 12 seconds in passing. Comparing this against the average spacing of 12 .4 seconds per vehicle passing, on the average a 54 second gap is likely to occur every 72 . 4 seconds. With east bound vehicles passing every 50 seconds windows of 25 seconds or more are likely to occur every 72 seconds. This is more than sufficient to allow a loaded truck to make a left turn onto SH 026 from Escalon Bellota Road. Thus, a left turn opportunity occurs at least every 72 seconds. For passenger vehicles and light trucks the opportunity for a left turn occurs more often because of their acceleration capabilities. Because of the time required for loading, trucks departing the quarry will enter the traffic stream every 4 . 8 minutes on the average. During 4 . 8 minutes approximately 4 opportunities for a truck to make a left turn onto SH 026 will occur. Traffic other than quarry trucks demand a left turn opportunity approximates once every 3 minutes. The addition of 100 trucks per day will change this demand to approximately once every 2 minutes during which 2 opportunities will occur during the peak hour. During all other periods of the day the loading on the intersection is less. It can be concluded from the above that traffic to and from the quarry does not produce significant delays and therefore, reduction in service .level at the most highly impacted point of the road way system serving the area of the quarry. ROADWAY CONDITION In consideration of traffic impact, the physical conditions of the roadways to be considered are surface integrity, width, sight distance, grade and alignment. Important to surface integrity is subgrade condition which can be interpreted through surface conditions. The condition of the surface of the roadways serving the quarry area can be described as ranging from good to excellent at the time of the survey. In two places, one on Waverly Road and one on Shelton Road grade and alignment combine to reduce allowable speeds. Both are posted with advisory speeds of 35 miles per hour. Because of the low traffic density on these roads truck traffic at these two points will have virtually undetectable impact upon service level of the roadways. The reduction of sight distance at the two points described in the previous paragraph is small with sight distances remaining 4 CONDOR