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0 REPORT OF NOISE EVALUATION for BROWN SAND PLANT No. 4 Brown Sand Plant No.4 is located within a triangle of land at the intersection of Interstate 580 and Interstate 5. The area surrounding Brown Sand Plant No. 4 is rural with orchards, grain fields and pasture lands. The overwhelming source of ambient noise in the area is that generated by the-two interstate highways. The projected 65 CNEL contours for the year 2005 for these roadways are 336 Feet from roadway edge for I-5 and 325 feet from roadway edge for I-580. This is a growth of 46 feet for I-5 and 70 feet for I-5 1985 estimates. The noise from these two roadways completely overpowers other noise sources in the area. Other than this noise, the background is typically rural with levels in the 35 to 45 dbA range. These levels increase occasionally with the operation of farm equipment in the fields and orchards. The location of the Sand Plant within the above described triangle of land is further defined on its north edge by the channel of Hospital Creek. Within this triangle, the west side is occupied by two t; settling ponds for the water used in processing the sand. The plant equipment is located near the east edge next to Interstate 5 approximately midway from north to south. The plant is below the level of the adjacent land with a well defined embankment near the property edge. Line of sight to any property that may be occupied is interrupted by this embankment from any equipment located near it. The location of the plant is shown by the letters "SP" on Figure 1. There are very few residences within several miles of the Sand Plant operating area. In fact the only rY p g Y t residence that can be seen from the present operation is located near the end of Bird Road across Interstate 580 to the west. There are two residences along Blewett Road to the north of the operation, and a major farming operation across Interstate 5 from the plant inaddition h ne p ,1 g p spat to eo residence near the end of Bird Road. There is site approval for another residence to be built further south (on the opposing slope to the existing house) on Bird Road. The locations of the potential residence and the existing residences(in respect to the Sand Plant) are shown by the letter "R" on Figure 1. For purposes of this study there are two noise concerns. The first of these is the noise created by operation of the plant equipment. This noise created at this plant is similar to the sand plant in operation at the Oakwood Lake site with the addition of a "rock crusher" at one end of the plant. There is also a power generating system in a trailer within the plant. With the exception of this "generator" and the rock crusher, the basic operation produces an amount of noise equivalent to the Oakwood operation. The rock crushing operation will add to the noise near its location and the generator produces enough noise so that at some distance from the plant, it will be the primary noise producer. �1 The second noise concern is that noise generated by the truck traffic hauling sand from the plant. These trucks.travel southbound on Bird Road from Hiway 132 and enter the plant property at a point