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carwash would not significantly increase the noise environment for these noise-sensitive receptors, and therefore, the impact would be less-than-significant. The townhomes to the northeast of the project site, which is based on calculations derived from the measurement results at location ST-1, are exposed to an existing Ldn level of 51 dBA. Unlike Las Positas Gardens Townhomes, these existing levels are below the 65 dBA Ldn, falling in the `normally acceptable' limits for multi-family residential uses per the Noise Element noise and land use criterion. Operations of the proposed carwash are calculated to be approximately 31 dBA Ldn at these townhomes. This indicates that the operation of the proposed carwash would not impact the existing noise environment at these townhomes. The noise would not result in a significant impact on the townhomes to the northeast of the project site. Similar existing levels were estimated for the fire station. At the time of measurement, activity at the fire station was minimal, so similar levels would be expected. Directly north of the proposed carwash is the eastern property line of the fire station and the parking area. Any outdoor areas surrounding the fire station where people would be exposed to the noise from the carwash would located in the northwest direction of the entrance to the carwash. As stated earlier, this area of exposure is partially shielded from the 7-Eleven convenience store, but calculations were made assuming minimal to no shielding, which would reflect the worst-case scenario. The predicted levels at the fire station for the carwash operations would be approximately 42 dBA, Lmax, and 30 dBA, Ldn, which is lower than the 70 dBA Ldn requirement established in the City's General Plan. This would be a less-than-significant impact. The restaurant located on the northeast corner of the project site is not currently occupied. In the future, however, occupancy is expected. The estimation of the existing noise environment at this location may increase once there is consistent activity at the building. There would not, however, be a public, outdoor use area. The restaurant is approximately 50 feet east of the proposed carwash entrance and under existing conditions, the Ldn at the restaurant was approximately 64 dBA. Most of the existing sources of noise would be parking lot traffic for the surrounding commercial/retail land uses, the existing gas station and roadway traffic, and the existing automotive service shop. Based on perpendicular propagation of the proposed carwash noise levels from the entrance to the restaurant's front porch, the Lmax would be considerably lower than the Lmax measured under existing conditions. Likewise, the calculated Lt, is expected to be significantly below the existing Ldn levels. Therefore, the future environmental noise levels, as measured from the restaurant, would be expected to meet the exterior noise criterion in the General Plan. This would be a less-than-significant impact. Two locations south and southeast of the project site were selected to represent the surrounding commercial/retail land uses. Based on the noise propagation patterns used in the analysis, the receptors located south of the source would receive the loudest noise levels from the carwash, and the receptors in the southeast direction would have the next loudest noise levels. For this reason, commercial/retail land uses approximately 185 feet south and 160 feet southeast of the proposed carwash exit were selected for evaluation. The existing measured values were approximated based on the LT-2 measurements. While the highest Lmax noise level for these retail receptors were approximately 60 and 61 dBA, respectively, the Ldn noise levels were approximately 49 and 50 dBA, respectively. The calculated noise levels for the carwash operations, as measured at each of the retail receptors, would be 56 to 57 dBA, Lmax, and 44 to 45 Page 14