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7 Noise 5.a., b. Significant noise related impacts are not anticipated. Although the applicant is proposing 24-hour operations, there are few residences within several miles of the site. Because the site is already subject to high noise levels from adjacent 1-580 and 1-5, and operations will be conducted below grade, only a slight and less than significant increase in noise is anticipated. Transportation 9.a. The applicant anticipates approximately 240 trips per day over the 50-year life of the expanded quarry excavation. While this number of trips will not likely lead to a drop in the level of service on area roads, it may cumulatively impact the area's roadways when truck traffic from other existing and approved quarries is considered. Also, truck traffic may degrade the actual road surfaces. Cultural Resources 10. The Cultural Resource Survey prepared by the applicant's consultant concluded that development of the quarry would not likely have any negative impacts relative to cultural resources. No surficial evidence was discovered on the 501-acre site to indicate the presence of cultural resources, nor did a records search identify any known sites within the project area. In the event that any cultural resources are discovered during the excavation, the operator will be required to cease all activity and contact a qualified archaeologist to evaluate the find. Aesthetics 12. Interstate 580 is identified in the General Plan as being a Scenic Route. General Plan Open Space Policy No. 13 (p. VI-5) states, 'Development proposals along scenic routes shall not detract from the visual and recreational experience.' Given the site's proximity to Interstate 580 and Interstate 5 and the nature of the proposal, the three 130-foot-deep pits are likely to 'detract from the visual experience." This may be inconsistent with the General Plan and also may create a significant environmental impact relative to aesthetics. Biological Resources 3.a., b. The 121-acre portion of the site shown as 'Reserve' on the Site Plan is not proposed to be excavated as part of this permit. This portion of the site is within the Core Conservation Area of the San Joaquin Kit Fox Habitat Conservation Plan (HCP). There is also the potential for vernal pools to exist on the site, particularly west of 1-580 along Hospital Creek. The biological survey prepared by the applicant's biologist also identified several special status avian species using the area around the stock pond in the western portion of the site for foraging. Revised Initial Study - 10 - OX-94-1