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The Federal Clean Air Act and the California Clean Air Act of 1988 require that the California Air <br /> Resources Board,based on air quality monitoring data, designate portions of the state where Federal <br /> or State ambient air quality standards are not met as "nonattainment areas". Because of the <br /> differences between the Federal and State standards,the designation of"nonattainment area"is <br /> different under the Federal and State legislation. Under the California Clean Air Act, San Mateo <br /> County is a nonattainment area for ozone,PMIO,and PM2.5. The County is either in attainment or <br /> unclassified for all other pollutants. Under the Federal CAA, San Mateo County is classified as a <br /> nonattainment area for ozone and PM2.5. The U.S. EPA grades the region as in attainment or <br /> unclassified for all other air pollutants,including PMIO. <br /> 4.3.1.2 Sensitive Receptors <br /> BAAQMD defines sensitive receptors as facilities where population groups that are particularly <br /> sensitive to the effects of air pollutants (i.e., children,the elderly, and people with illnesses) are likely <br /> to be located. Examples include schools,hospitals, and residential areas. The project site is directly <br /> adjacent to a residential neighborhood. The project itself is intended to provide housing for elderly <br /> persons,would are considered sensitive receptors. <br /> 4.3.2 Environmental Checklist and Discussion of Imnacts <br /> AIR QUALITY <br /> Less Than <br /> Potentially Significant Less Than <br /> Significant With Significant No Impact Beneficial Information <br /> Impact Mitigation �p�f �P�f Source(s) <br /> Incorporated <br /> Would the project: <br /> 1) Conflict with or obstruct � � � � � 1,2,3,5,6 <br /> implementation of the applicable air 7 <br /> quality plan? <br /> 2) Violate any air quality standard or � � � � � 1,2,3,5,6 <br /> contribute substantially to an existing 7 <br /> or projected air quality violation? <br /> 3) Result in a cumulatively � � � � � 1,2,3.5.6 <br /> considerable net increase of any 7 <br /> criteria pollutant for which the <br /> project region is classified as non- <br /> attainment under an applicable <br /> federal or state ambient air quality <br /> standard including releasing <br /> emissions which exceed <br /> quantitative thresholds for ozone <br /> precursors? <br /> 4) Expose sensitive receptors to � � � � � 1,2,3.5 <br /> substantial pollutant concentrations? <br /> 5) Create objectionable odors affecting a � � � � � 1,2,3 <br /> substantial number of people? <br /> Kensington Assisted Living Facility Project 19 Initial Study <br /> Redwood City Apri12013 <br />