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Lsn levels at the noise-sensitive receptors in the vicinity of the project can be determined. For this project, the AeroDry quiet dryer system was chosen. Following this analysis, Table 5 also shows the measured and calculated levels at the surrounding noise-sensitive receptors, assuming the AeroDry Systems quiet dryer system and the IVS Power Vacuums system are used. The predicted Ldr, levels for the proposed carwash were calculated assuming the maximum of 80 carwashes per day and 1 minute per car for total drying time. A comparison of these operational L, , levels to the measured Ldn at the same locations is useful in assessing the impact of the proposed project versus the noise exposure level limits established in the City's General Plan. TABLE 5 Lmax & Ldn Levels Calculated for the Quit Dryer System at Noise-Sensitive Rece 8 tors in the Vicini of the Carwash _� v r s r�7 ,�'� �a ¢T`J�� ° f r ,�,�..�.��` r, � � s.r�{, Er>`;�q,7 ` J +' < � 'r- y < {'-lam+ � 4' 5.4 aV) .� I`ly'>! 1 , .�„ x� '� e �'r7 �. rfFF� tr r tiirl� 1 u� s ` atg, " rat' Y;" da S 4 Las Positas Gardens Townhomes: -325 feet southwest of carwash exit 82 71 45 33 65 Townhomes on West Las Positas Boulevard: -220 feet northeast of carwash entrance 72 59 44 31 65 Fire Station: -225 feet northwest of carwash entrance 72 59 42 30 70 Commercial Restaurant: -50 feet east of carwash entrance 77 64 52 39 70 Commercial Retail: -185 feet south of carwash exit 74 63 57 45 70 Commercial Retail: -160 feet southeast of carwash exit 74 63 56 44 70 NOISE IMPACTS AND MITIGATION MEASURES Since the carwash operations will be limited to daytime only hours (i.e., 7:00 a.m. to 10:00 p.m.), the noise limits established by Section 9.04.035, Noise Limits-Commercial or Industrial Use Adjacent to Residential Zone, in the City of Pleasanton's Municipal Code Noise Ordinance do not apply to this impact study. However, Section 9.04.040, Noise Limits-Commercial Property, does apply to this impact study. Therefore, the impact criteria used in this study will focus on Section 9.04.040 of the municipal code, as well as the noise and land use compatibility and noise level increase criteria found in the City's General Plan Noise Element. City of Pleasanton General Plan Noise Element The noise levels at Las Positas Gardens Townhomes were predicted at the LT-1 location, which is southwest of the carwash exit. Predicted levels calculated at locations directly west of the proposed carwash would result in lower levels than those calculated in the southwest direction due to building and directionality shielding. Therefore, the results shown in Table 5 represent the worst-case scenario for the Las Positas Gardens Townhomes. As shown in Table 5, the calculated Lmax and Ldr, levels predicted at Las Positas Gardens Townhomes for the carwash operations would be lower than the existing measured levels. This indicates that the proposed Page 13