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Administrative Draft Environmental Impact Report Gill Medical Center Project Table 4.5-4. Construction-Related Emissions Construction Year Maximum Pollutants(tons per year) ROG NOx CO S02 PM10 PM2.5 Exceed SJVAPCD Threshold? No No No No No No Source:CaIEEMod version 2016.3.2.Refer to Appendix D for Model Data Outputs. As shown in Table 4.5-4, construction-generated emissions would not exceed SJVAPCD significance thresholds. In addition to the SJVAPCD criteria air pollutant thresholds, SJVAPCD Rule 9510, Indirect Source Review, aims to fulfill the District's emission reduction commitments in the PM10 and Ozone Attainment Plans.This rule applies to construction projects within the jurisdiction of the SJVAPCD which upon full build-out will include any one of the following: 50 residential units 2,000 square feet of commercial space 25,000 square feet of light industrial space 100,000 square feet of heavy industrial space 20,000 square feet of medical office space 39,000 square feet of general office space 9,000 square feet of educational space 10,000 square feet of government space 20,000 square feet of recreational space; or 9,000 square feet of space not identified above. This rule also applies to any transportation or transit project where construction exhaust emissions equal or exceed two tons of NOx or two tons of PM1o. The project developers are required to reduce concentrations of NOx by 20 percent and PM,o by 45 percent during construction activities. Development projects that have a mitigated baseline below two tons per year of NOx and two tons per year of PM,o shall be exempt from the requirements per Rule 9510 (SJVAPCD 2017). The Project is proposing the construction of more than 20,000 square feet of medical office space.Thus, adherence to Rule 9510 is required of the Proposed Project. In accordance with Rule 9510, the Project applicant is required to prepare a detailed air impact assessment (AIA) for submittal to the SJVAPCD, which demonstrates reduction of NOx emissions from the Project's baseline by 20 percent and a reduction of PM10 by 45 percent.Therefore, Mitigation Measure 4.5-2a is required (see below). As demonstrated in Table 4.5-5, implementation of Mitigation Measure 4.5-2a would reduce annual NOx emissions by as much as 72 percent during Phase 1 of construction and nearly 53 percent during Phase 2 Air Quality 4.5-16 October 2021