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San Joaquin County Community Other CEOA Considerations _ Development Department Table 5-6. Predicted Cumulative Mining and Traffic Noise Levels, Mining Equipment Operating at North Pit Stage III, 24-Hour Mining Operations Mining Equipment Operating at Mining Equipment Operating 30 2027 No-Project Existing Ground Level Feet below Existing Ground Level Receiver Sound Level Sound Level, Increase over No- Sound Level, Increase over Name dBA Ldn dBA Ld„ Project,dB dBA Ldn No-Project,dB — P-N1 64 67* 3 66* 2 P-N2 69 71* 2 70* 1 P-N3 68 71* 3 70* 2 P-N5 67 71* 4 70* 3 P-N6 56 64 8 62 6 — P-N7 62 66* 4 65* 3 P-N8 59 64 5 63 4 P-WI 53 61 8 58 5 — P-W2 53 60 7 58 5 P-W3 52 61 9 58 6 P-El 54 62 8 61 7 * Cumulative noise is predicted to exceed 65 dB-Ldo. Transportation and Traffic Impact CE-8: Cumulative Change in Level of Service on SR 132 between the 1-580 and 1-5 Interchanges (Cumulatively Considerable) As described in section 3.L, the year 2027 base conditions(cumulative baseline) weave section, ramp junction and mainline peak hour analysis identified _ projected LOS with a four-lane freeway between the I-580 and 1-5 interchanges that would be worse than acceptable LOS standards. The proposed Project would contribute to these conditions. This is a significant impact. Caltrans — Concept Facility for SR 132 is a four-lane freeway from I-580 to just past the 1-5 junction and the Ultimate Transportation Corridor(UTC)within this segment is for a six-lane freeway. An evaluation prepared in support of the separate SR 132/Bird Road Interchange Project concluded that a six-lane freeway section on SR 132 within these limits(consistent with the UTC)would provide the capacity needed for acceptable traffic operations through the year 2027. The separate interchange project does not,however, include the construction of a six-lane — freeway between the 1-580 and I-5 interchanges. A shorter-term traffic operations analysis was also prepared for the SR 132/Bird Road Interchange Project that indicated that mainline SR 132 between the junctions with I-580 and — I-5 would require the six-lane freeway segment in the year 2017 in order to obtain acceptable Levels of Service. Caltrans has concurred with this conclusion and approved the use of a 10-year design period for the interchange project. _ Caltrans and the County also concurred that the construction of the additional DeSilva Gates Quarry Project — Draft Environmental Impact Report 5-10 J85 05105.05