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A Traffic Study and Analysis was performed by a Licensed Civil Engineer to evaluate potential adverse impacts of any changes in traffic levels associated with project expansion. This study is incorporated into this document as Appendix 11.7 . This traffic study was performed at a time when the El Rancho Rock and Sand, Inc. Quarry was not in operation. The currently permitted operation is allowed a maximum truck traffic of 42 haul trucks per day, with an average of 21 haul trucks per day. Historical data on haul truck traffic indicate that these totals were exceeded on approximately 5 days per month, during those months of heaviest quarry operation. However, total haul truck traffic never exceeded 60 trucks per day. Monthly haul truck traffic totals average out to less than 35 trucks per day during the months of heaviest quarry operation. El Rancho Rock and Sand, Inc. Quarry wishes to permit for an anticipated maximum over the life of the quarry of 100 haul trucks per day, and an average of 80 haul trucks per day. Analysis indicates that roadways serving the quarry are in good to excellent condition, suitable for significant truck traffic or an elevated traffic index. The proposed increase in traffic due to expanded quarry operations will not have a significant impact upon the service level of the affected roads. No significant impacts or adverse environmental changes will result from the increase in haul truck traffic. 5. 7 CULTURAL RESOURCES Continued development and expansion of this project into the remainder of the lease holding will have no impacts upon Cultural Resources. No prehistoric sites have been observed, or are suspected to occur on the project site. Limited portions of the ground surface of the northerly half of the lease holding were at one time covered with gravel and cobble dredge tailings residual to mining operations dating from the 1930 ' s and 1940 ' s. Most of these tailings were processed in the early stages of the currently permitted quarrying operation. There are no potentially significant impacts upon or irreversible adverse environmental changes to cultural resources. 5. 8 SOCIO-ECONOMICS Limited potential for socio-economic impacts to population, housing, employment, and revenues exists from the provision of additional jobs at the facility. The direct and indirect jobs 28 CONDOR