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<br /> <br /> <br />Memorandum <br />February 26, 2025 <br />Page 7 <br />21202-23 North County Landfill_Noise DRAFT <br />Noise Sensitive Land Use Outdoor Activity Areas1 <br />(dBA Ldn) <br />Interior Spaces <br />(dBA Ldn) <br />Community Assembly/Religious Assembly 65 45 <br />Cultural Institutions 65 45 <br />Hospitals and Clinics 65 45 <br />Offices - 45 <br />Parks and Recreation Facilities 65 45 <br />Schools 65 45 <br />1 Where the location of outdoor activity areas is unknown or is not applicable, the noise standard shall be applied <br />at the property line of the receiving land use. When determining the effectiveness of noise mitigation measures, <br />the standards shall be applied on the receiving side of noise barriers or other property line noise mitigation <br />measures. <br />Source: San Joaquin County Code of Ordinance Table 9-404.040. <br />Table 4. San Joaquin County Maximum Allowable Noise Exposure from Stationary Noise <br />Sources <br />Sound Level <br />Outdoor Activity Areas of Noise Sensitive Land Uses1 <br />Daytime2 <br />(7 a.m. to 10 p.m.) <br />Nighttime2 <br />(10 p.m. to 7 a.m.) <br />Hourly Equivalent Sound Level (Leq), dBA3 55 45 <br />Maximum Sound Level (Lmax), dBA 75 65 <br />1 Where the location of outdoor activity areas is unknown or is not applicable, the noise standard shall be applied <br />at the property line of the receiving land use. When determining the effectiveness of noise mitigation measures, <br />the standards shall be applied on the receiving side of noise barriers or other property line noise mitigation <br />measures. <br />2 Each of the noise level standards specified shall be reduced by 5 dB for impulsive noise, single tone noise, or <br />noise consisting primarily of speech or music. <br />3 If the noise source operates for less than 30 minutes per hour, then the maximum sound level standard shall <br />apply. <br />Source: San Joaquin County Code of Ordinance Table 9-404.040. <br />San Joaquin County General Plan, Noise Element <br />Besides the noise standards presented in Tables 3 and 4, the San Joaquin County 2035 General <br />Plan (General Plan)5 includes the following policies related to noise and vibration: <br />PHS-9.4 Acceptable Vibration Levels. The County shall require construction projects <br />anticipated to generate a significant amount of vibration to ensure acceptable interior <br />vibration levels at nearby vibration-sensitive uses based on FTA criteria. <br /> <br />5 Mintier Harnish Planning Consultants, 2016. San Joaquin County General Plan Policy Document, December.