Air Quality and Greenhouse Gas Emissions Technical Report

Transcription

1 Air Quality and Greenhouse Gas Emissions Technical Report Perris Senior Housing Project Perris, California Prepared for Casey Malone Lansing Companies 1261 High Bluff Drive, Suite 150 San Diego, California Prepared by Psomas 3 Hutton Centre Drive, Suite 200 Santa Ana, California 920 Contact: Tin Cheung T: July 201

2 Perris Senior Housing Project TABLE OF CONTENTS Section Page Executive Summary... ES Project Description Air Quality Analysis Existing Air Quality Conditions Pollutants, Standards, and Existing Air Quality Existing Air Quality Sensitive Air Quality Receptors Air Quality Impact Analysis Thresholds of Significance Construction Emissions Operational Emissions Construction Activities Operational Activities Carbon Monoxide Hotspot Criteria Pollutants from On-Site Construction Toxic Air Contaminant Emissions from On-Site Construction Exposure to Off-Site Toxic Air Contaminant Emissions Greenhouse Gas Emissions Analysis Existing Greenhouse Gas Emissions Conditions Regulatory Background Greenhouse Gas Emissions Impact Analysis Conclusion References R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx i Table of Contents

3 Perris Senior Housing Project TABLES Table Page 1 Attainment Status of Criteria Pollutants in the South Coast Air Basin California and Federal Ambient Air Quality Standards Air Quality Levels Measured at the Perris Monitoring Station South Coast Air Quality Management District Air Quality Significance Thresholds Estimated Maximum Daily Construction Emissions... 6 Localized Significance Threshold Emissions... 8 Peak Daily Operational Emissions Localized Significance Threshold Emissions Estimated Greenhouse Gas Emissions from Construction Estimated Annual Greenhouse Gas Emissions from Project Operation Estimated Project Annual GHG Emissions... 1 EXHIBITS Exhibit Follows Page 1 Project Site Location... 1 Attachment ATTACHMENTS A CalEEMod Data R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx ii Table of Contents

4 Perris Senior Housing Project EXECUTIVE SUMMARY This Air Quality and Greenhouse Gas Technical Report (AQTR) has been developed to assess and document the potential air quality and greenhouse gas impacts of the Proposed Perris Senior Living Project (Project) as per the requirements of the California Environmental Quality Act (CEQA). The Project involves the development of 156 senior housing units and 18 parking spaces on a 4.21-acre site in the City of Perris. The Project is located at the northwest corner of the A Street and Ellis Avenue intersection. The AQTR assesses the potential air quality and greenhouse gas (GHG) impacts as required by CEQA. The air pollutant emissions attributable to the Project were evaluated for the construction and operations phases against CEQA significance thresholds established by the South Coast Air Quality Management District (SCAQMD). The Project s emissions were assessed for potential impacts to both regional and local air quality. The Project s GHG emissions were evaluated for impacts to contributions to global GHG emissions. Project-generated construction emissions would occur from offroad construction vehicles used in the grading, building construction, and paving phases; application of architectural coatings; and vehicle trips from building material deliveries and construction worker trips. Project construction activities were found to result in regional emissions that are less than the SCAQMD significance thresholds for regional air quality. As such, the Project s emissions are not considered to result in a significant contribution to regional air quality. The Project s construction emissions were also evaluated against localized significance thresholds to determine whether these emissions would result in exceedance of the health-based ambient air quality standards at receptor locations local to the Project site. These receptor locations include the existing residential uses to the north, west, east, and southeast of the Project site as well as Rotary Park and Perris Lake High School. Potential localized impacts were found to be below the SCAQMD s localized significance thresholds and consequently, would not result in a significant air quality impact to local air quality at nearby receptors. The operations phase of the Project was also evaluated for regional and local impacts to air quality. The Project s operational phase would generate emissions from energy use, on-site maintenance activities, and vehicle trips to and from the Project site. These sources were found to result in emissions that are below the SCAQMD s operational phase emissions thresholds for regional air quality. Consequently, no significant impacts would occur from to regional air quality from Project activities. Localized air quality was also found to result in emissions that are below the SCAQMD s operational phase localized significance thresholds and would likewise result in less than significant impacts to local air quality. No traffic-related local air quality impacts would occur as a result of carbon monoxide hotspots associated with congested traffic conditions. The Project was also found to result in less than significant impacts related to odors due to a lack of odor sources that would generate a public nuisance. The Project s generated emissions were also found to be below the SCAQMD s regional and localized significance thresholds and would not conflict with the SCAQMD s Air Quality Management Plan. The Project s GHG emissions were evaluated against the SCAQMD s CEQA GHG screening thresholds and were found to be below these thresholds. As such, no significant GHG impacts would occur from the Project exceeding adopted significance thresholds. The Project was also evaluated for consistency with the City of Perris Sustainability Goals in the Conservation Element of the General Plan. The Project was found to be consistent with these Sustainability Goals through the planting of approximately 100 trees; the provision of bicycle racks to promote alternative forms of transportation; and water conservation measures (low flow toilets, shower heads, drought-tolerant plants, drip irrigation and smart irrigation controllers). Because emissions were found to be below the SCAQMD s GHG screening thresholds and would be consistent with R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx ES-1 Executive Summary

5 Perris Senior Housing Project the City of Perris Sustainability Goals, no significant GHG impacts would occur from Projectgenerated GHG emissions. In summary, no significant air quality or GHG impacts would occur from the construction and operational phases of the proposed Perris Senior Living Project. R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx ES-2 Executive Summary

6 Perris Senior Housing Project 1.0 PROJECT DESCRIPTION The Project Applicant, Lansing Companies, proposes to develop the 4.21-acre site in the City of Perris with 156 senior housing units and 18 parking spaces. The Perris Senior Housing Project would be located on the northwest corner of the A Street and Ellis Avenue intersection. The Project site is currently vacant and is zoned as single-family residential. It is proposed that the site be rezoned as commercial community with this Project. The Project location and study area are shown in Exhibit 1, Project Site Location. 2.0 AIR QUALITY ANALYSIS 2.1 EXISTING AIR QUALITY CONDITIONS Pollutants, Standards, and Existing Air Quality The U.S. Environmental Protection Agency (USEPA) defines seven criteria air pollutants: ozone (O 3 ), carbon monoxide (CO), nitrogen dioxide (NO 2 ), sulfur dioxide (SO 2 ), respirable particulate matter with a diameter of 10 microns or less (), fine particulate matter with a diameter of 2.5 microns or less (), and lead. These pollutants are called criteria pollutants because the USEPA has established National Ambient Air Quality Standards (NAAQS) for the concentrations of these pollutants. The California Air Resources Board (CARB) has also established standards for the criteria pollutants, known as California Ambient Air Quality Standards (CAAQS), and the State standards are generally more restrictive than the NAAQS. When a region has air quality that fails to meet the standards, the USEPA and the CARB designate the region as nonattainment and the regional air quality agency must develop plans to attain the standards. Based on monitored air pollutant concentrations, the USEPA and the CARB designate an area s status in attaining the NAAQS and the CAAQS, respectively, for selected criteria pollutants. These attainment designations are shown in Table 1. As identified in Table 1, Riverside County is a nonattainment area for O 3,, and. TABLE 1 ATTAINMENT STATUS OF CRITERIA POLLUTANTS IN THE SOUTH COAST AIR BASIN Pollutant State Federal O3 (1 hour) O3 (8 hour) Nonattainment Extreme Nonattainment Extreme Nonattainment Nonattainment Attainment/Maintenance Nonattainment Serious Nonattainment CO Attainment Attainment/Maintenance NO2 Attainment Attainment/Maintenance SO2 Attainment Attainment Lead Attainment Attainment/Nonattainment * All others Attainment/Unclassified No standards O 3 : ozone; : respirable particulate matter 10 microns or less in diameter; : fine particulate matter 2.5 microns or less in diameter; CO: carbon monoxide; NO 2 : nitrogen dioxide; SO 2 : sulfur dioxide; SoCAB: South Coast Air Basin. * Los Angeles County is classified nonattainment for lead; the remainder of the SoCAB is in attainment of the State and federal standards. Source: SCAQMD 2016 R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 1 Air Quality and Greenhouse Gas Emissions Analysis

7 Park Ave Arlene Way A St Riverside Redlands Yucaipa North St 10 W 9th St ST 91 W 9th St Moreno Valley ST60 10th St Lake Mathews 15 Project Site th St li Lake Perris Perris ST4 South St Witt St 11th St Perristo St ST 4 Lake Elsinore Lake Elsinore Canyon Lake Canyon Lake 11th St 215 ST 9 Diamond Valley Lake Lake Skinner 12th St 13th St Palisades St Montanoso Ln Ellis Ave Willow Dr S B St Redbud Pl D:\Projects\3EVE\010100\MXD\AirQuality\ex_Project_Location.mxd Gypsum Ct Project Boundary Yucateca St Auburn Ct Redding Way Sycamore St Red Cedar Pl Red Maple Pl Red Pine Pl Red Spruce Pl Aerial Source: ESRI, NAIP 2016 Project Site Location Perris Senior Housing Project ² Feet Exhibit 1 (Rev: MMD) R:\Projects\EVE\3EVE010100\Graphics\AirQuality\ex_Project_Location.pdf

8 Perris Senior Housing Project O 3 is a secondary pollutant and is created when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight. The predominant source of air emissions generated by Project development would be from vehicle emissions. Motor vehicles primarily emit CO, NOx, and VOCs. The NAAQS and CAAQS are designed to protect the health and welfare of the populace within a reasonable margin of safety. The NAAQS and CAAQS for O 3, CO, NO 2, SO 2,,, and lead are shown in Table 2. TABLE 2 CALIFORNIA AND FEDERAL AMBIENT AIR QUALITY STANDARDS Pollutant O3 CO NO2 SO2 Lead Visibility Reducing Particles Averaging Time California Standards Federal Standards Primary a Secondary b 1 Hour 0.09 ppm (180 µg/m 3 ) 8 Hour 0.00 ppm (13 µg/m 3 ) 0.00 ppm (13 µg/m 3 ) Same as Primary 24 Hour 50 µg/m µg/m 3 Same as Primary AAM 20 µg/m 3 Same as Primary 24 Hour 35 µg/m 3 Same as Primary AAM 12 µg/m µg/m µg/m 3 1 Hour 20 ppm (23 mg/m 3 ) 35 ppm (40 mg/m 3 ) 8 Hour 9.0 ppm (10 mg/m 3 ) 9 ppm (10 mg/m 3 ) 8 Hour (Lake Tahoe) 6 ppm ( mg/m 3 ) AAM ppm (5 µg/m 3 ) ppm (100 µg/m 3 ) Same as Primary 1 Hour 0.18 ppm (339 µg/m 3 ) ppm (188 µg/m 3 ) 24 Hour 0.04 ppm (105 µg/m 3 ) 0.5 ppm 3 Hour (1,300 µg/m 3 ) 1 Hour 0.25 ppm (655 µg/m 3 ) 0.05 ppm (196 µg/m 3 ) 30-day Avg. 1.5 µg/m 3 Calendar Quarter 1.5 µg/m 3 Rolling 3-month Avg µg/m 3 8 Hour Extinction coefficient of 0.23 per km visibility 10 miles (0.0 per km 30 miles for Lake Tahoe) Sulfates 24 Hour 25 µg/m 3 Hydrogen Sulfide 1 Hour 0.03 ppm (42 µg/m 3 ) Vinyl Chloride 24 Hour 0.01 ppm (26 µg/m 3 ) No Federal Standards Same as Primary O 3 : ozone; ppm: parts per million; µg/m 3 : micrograms per cubic meter; : respirable particulate matter 10 microns or less in diameter; AAM: Annual Arithmetic Mean; : No Standard; : fine particulate matter 2.5 microns or less in diameter; CO: carbon monoxide; mg/m 3 : milligrams per cubic meter; NO 2 : nitrogen dioxide; SO 2 : sulfur dioxide; km: kilometer. a National Primary Standards: The levels of air quality necessary, within an adequate margin of safety, to protect the public health. b National Secondary Standards: The levels of air quality necessary to protect the public welfare from any known or anticipated adverse effects of a pollutant. Note: More detailed information in the data presented in this table can be found at the CARB website ( Source: CARB 2016 R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 2 Air Quality and Greenhouse Gas Emissions Analysis

9 Perris Senior Housing Project The SCAQMD was established in 19 by merging the individual air pollution control districts of the four counties within the South Coast Air Basin (SoCAB): Orange County and the non-desert portions of Los Angeles, Riverside, and San Bernardino Counties. The SCAQMD and the Southern California Association of Governments (SCAG), in coordination with local governments and the private sector, develop the Air Quality Management Plan (AQMP) for the SoCAB to satisfy these requirements. The AQMP is the most important air management document for the SoCAB because it provides the blueprint for meeting State and federal ambient air quality standards. On November 28, 200, CARB submitted a State Implementation Plan (SIP) revision to the USEPA for O 3, (199 Standard), CO, and NO 2 in the SoCAB. This revision is identified as the 200 South Coast SIP. The 200 South Coast SIP demonstrates attainment of the federal standard in the SoCAB by 2014 and attainment of the federal 8-hour O 3 standard by This SIP also includes a request to reclassify the O 3 attainment designation from severe to extreme. The USEPA approved the redesignation effective June 4, The extreme designation requires the attainment of the 8-hour O 3 standard in the SoCAB by June CARB approved SIP revisions in April 2011 and the O 3 SIP revisions in July The USEPA approved the SIP on September 25, 2013, and has approved 4 of the hour O 3 SIP requirements. On November 30, 2014, the USEPA proposed a finding that the SoCAB has attained the 199 standards (USEPA 2014). The comment period closed on January 22, 2015; no subsequent action has been taken. On September 30, 2015, the USEPA proposed to approve elements of the South Coast 2012 Plan and 2015 Supplement, which addresses Clean Air Act requirements for the 2006 NAAQS, and proposed to reclassify the area as a serious nonattainment area for the 2006 standard. The reclassification is based on the determination that the area cannot practicably attain the 2006 NAAQS by the moderate area attainment date (December 31, 2015). On December 22, 2015, the USEPA reclassified the South Coast area as a Serious nonattainment area for the 2006 standard. The final reclassification requires the State to submit a serious area plan that provides for attainment of the 2006 NAAQS as expeditiously as practicable and no later than December 31, 2019 (USEPA 2016). On March 3, 201, the SCAQMD adopted the 2016 AQMP, which is a regional and multi-agency effort (SCAQMD, CARB, SCAG, and USEPA). The 2016 AQMP incorporates the latest scientific and technical information and planning assumptions, including the Regional Transportation Plan/Sustainable Communities Strategy (RTP/SCS); updated emission inventory methodologies for various source categories; and SCAG s latest growth forecasts. The main purpose of an AQMP is to bring an area into compliance with the requirements of federal and State air quality standards. For a project to be consistent with the AQMP, the pollutants emitted from a project should not (1) exceed the SCAQMD CEQA air quality significance thresholds or (2) conflict with or exceed the assumptions in the AQMP Existing Air Quality For air quality issues, the Project site is located in the Riverside County portion of the SoCAB; the SCAQMD is the air pollution control agency for the SoCAB. The SoCAB is a 6,600-square-mile area bound by the Pacific Ocean to the west, the San Gabriel, San Bernardino, and San Jacinto Mountains to the north and east, and the San Diego County line to the south. The SoCAB includes all of Orange County and the non-desert portions of Los Angeles, Riverside, and San Bernardino Counties, in addition to the San Gorgonio Pass area of Riverside County. The SoCAB s terrain and geographical location (i.e., a coastal plain with connecting broad valleys and low hills) determine its distinctive semi-arid climate, which is characterized by moderate temperatures, oceanic influence, and precipitation that is limited to a few storms during the winter (November through April). R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 3 Air Quality and Greenhouse Gas Emissions Analysis

10 Perris Senior Housing Project Air quality data for the Project site is represented by the monitoring station located at 23½ North D Street in the City of Perris. The monitoring station is located approximately 1.15 miles northeast of the Project site. Pollutants measured at the Perris Monitoring Station include O 3 and. The monitoring data presented in Table 3, Air Quality Levels Measured at the Perris Monitoring Station, were obtained from CARB (CARB 201a). Federal and State air quality standards are presented with the frequency that may be exceeded. TABLE 3 AIR QUALITY LEVELS MEASURED AT THE PERRIS MONITORING STATION Pollutant O3 (1 hour) O3 (8 hour) (24 hour) (AAM) NO2 (1 Hour) (24 Hour) California Standard 0.09 ppm None National Standard Year Max. Level * Days State Standard Exceeded Days National Standard Exceeded ppm 0.00 ppm µg/m µg/m 3 20 µg/m 3 None 0.18 ppm ppm None 35 µg/m O 3 : ozone; ppm: parts per million; : respirable particulate matter with a diameter of 10 microns or less; µg/m 3 : micrograms per cubic meter; : Data Not Reported or insufficient data available to determine the value; AAM: Annual Arithmetic Mean; NO 2 : nitrogen dioxide; : fine particulate matter with a diameter of 2.5 microns or less. * California maximum levels were used. Source: CARB 201. The Perris monitoring data shows that O 3 is the air pollutant of primary concern in the Project area. At the monitoring station, the State 1-hour O 3 standard was exceeded 16 days in 2014, 25 days in 2015, and 23 days in The State 8-hour O 3 standard was exceeded 63 days in 2014, 50 days in 2015, and 56 days in The federal O 3 8-hour standard was also exceeded 59 days in 2014, 49 days in 2015, and 55 days in O 3 is a secondary pollutant and is not directly emitted from a source; it occurs as the result of photochemical reactions from ozone precursors, which include VOCs, NO 2, and sunlight Sensitive Air Quality Receptors Sensitive receptors include, but are not limited to, children, the elderly, persons with preexisting respiratory or cardiovascular illness, and athletes and others who engage in frequent exercise. The SCAQMD considers the following land uses as sensitive receptors: residences, schools, playgrounds, child-care centers long-term health care facilities, rehabilitation centers, R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 4 Air Quality and Greenhouse Gas Emissions Analysis

11 Perris Senior Housing Project convalescent centers, and retirement homes. The Project site is located near residential neighborhoods. There are single-family residences adjacent to the Project site on all sides except to the south. Rotary Park is located approximately 50 feet to the east, and the Perris Lake High School is located approximately 550 feet to the east. 2.2 AIR QUALITY IMPACT ANALYSIS Thresholds of Significance The SCAQMD s Air Quality Analysis Handbook (CEQA Handbook) provides significance thresholds for both construction and operation of projects within the SCAQMD s jurisdictional boundaries (SCAQMD 201b). The SCAQMD recommends that projects be evaluated in terms of the quantitative thresholds established to assess both the regional and localized impacts of project-related air pollutant emissions. The City of Perris uses the current SCAQMD thresholds to determine whether a proposed project would have a significant impact. These SCAQMD thresholds are identified in Table 4. TABLE 4 SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT AIR QUALITY SIGNIFICANCE THRESHOLDS Mass Daily Thresholds (lbs/day) Pollutant Construction Operation VOC 5 55 NOx CO SOx Lead 3 3 lbs/day: pounds per day; VOC: volatile organic compound; NOx: nitrogen oxides; CO: carbon monoxide; : respirable particulate matter 10 microns or less in diameter; : fine particulate matter 2.5 microns or less in diameter; SOx: sulfur oxides. Source: SCAQMD Question AQ-1 Would the Project conflict with or obstruct implementation of the applicable air quality plan? Less than Significant Impact. The SCAQMD develops rules and regulations; establishes permitting requirements for stationary sources; inspects emissions sources; and enforces such measures through educational programs or fines, when necessary. It is directly responsible for reducing emissions from stationary (area and point), mobile, and indirect sources and has prepared an AQMP that establishes a program of rules and regulations directed at attaining the NAAQS and CAAQS. As stated above, the SCAQMD adopted the 2016 AQMP on March 3, 201 (SCAQMD 201a). The 2016 AQMP incorporates the latest scientific and technical information and planning assumptions, including the RTP/SCS; updated emission inventory methodologies for various source categories; and SCAG s latest growth forecasts. R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 5 Air Quality and Greenhouse Gas Emissions Analysis

12 Perris Senior Housing Project Pursuant to the SCAQMD s CEQA Handbook, there are two key indicators of consistency: 1. Whether the project will result in an increase in the frequency or severity of existing air quality violations or cause or contribute to new violations, or delay timely attainment of air quality standards or the interim emissions reductions in the AQMP. 2. Whether the project will exceed the assumptions in the AQMP based on the year of project buildout. With respect to the first criterion, based on the air quality modeling analysis conducted for the Project (see the discussion provided below under Question AQ-2 ), construction and operation of the Project would not exceed the SCAQMD CEQA thresholds of significance and consequently would not result in an increase in the frequency or severity of existing air quality violations; it would not cause or contribute to new violations, nor would it delay timely attainment of air quality standards or the interim emissions reductions in the AQMP. With respect to the second criterion, the Project was assessed as to whether it would exceed the assumptions in the AQMP. The SCAQMD s current air quality planning document is the 2016 AQMP, which is a regional and multi-agency effort among the SCAQMD, CARB, SCAG, and the USEPA. The 2016 AQMP includes an analysis of emissions, meteorology, atmospheric chemistry, regional growth projections, and the impact of existing control measures. The purpose of the 2016 AQMP is to set forth a comprehensive program that would promote reductions in criteria pollutants; greenhouse gases; and toxic risk and efficiencies in energy use, transportation, and goods movement. The 2016 AQMP incorporates the latest scientific and technical information and planning assumptions, including the RTP/SCS; updated emission inventory methods for various source categories; and SCAG s latest growth forecasts (SCAQMD 201b). The 2016 AQMP includes strategies and measures necessary to meet the NAAQS. The AQMP is based on projections of energy usage and vehicle trips from land uses in the SoCAB. The current zoning type for the Project site is single-family residential. The Project involves a change in the land use designation for the Project site to commercial community. Because the Project would not result in an exceedance of the SCAQMD s construction and operations phase significance thresholds, the SCAQMD does not consider the emissions to result to be substantial and would not have the potential to delay the air quality goals established in the AQMP. As such, the Project would not be inconsistent with the assumptions of the 2016 AQMP. This impact would be less than significant and no mitigation is required. Question AQ-2 Would the Project result in a violation of any air quality standard or contribute substantially to an existing or projected air quality violation? Less than Significant Impact. A project may have a significant impact where project-related emissions would exceed federal, State, or regional standards or thresholds, or where project-related emissions would substantially contribute to an existing or projected air quality violation. A project with daily emission rates below the SCAQMD s established air quality significance thresholds (shown in Table 4) would have a less than significant effect on regional air quality. Project emissions were estimated using the California Emissions Estimator Model (CalEEMod) version computer program (CAPCOA 2016). CalEEMod is designed to model construction and operational emissions for land development projects and allows for the input of project- and County-specific information. The CalEEMod input for construction emissions was based on the Project s construction assumptions. The input for operational emissions was based on the vehicle trip generation rate provided in the traffic impact analysis and the building area (Psomas 201). The CalEEMod input details are included in Attachment A. R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 6 Air Quality and Greenhouse Gas Emissions Analysis

13 Perris Senior Housing Project Construction Emissions Air pollutant emissions would occur from construction equipment exhaust; fugitive dust from site grading and excavation; exhaust and particulate emissions from trucks hauling construction materials, and from vehicles driven to and from the Project site by construction workers; and VOCs from painting and asphalt paving operations. Project construction would be required to comply with SCAQMD Rule 403 dust control measures as well as Rule 1113 architectural coating VOC content limits. Mass Emissions Thresholds Maximum Daily Regional Emissions Table 5 presents the estimated maximum daily emissions during construction of the proposed Project and compares the estimated emissions with the SCAQMD s daily mass emission thresholds. As shown in Table 5, Project construction mass daily emissions would be less than the SCAQMD s thresholds for all criteria air pollutants. As such, emissions from construction activities would not violate any air quality standard or substantially contribute to an existing or projected air quality violation. Impacts would be less than significant, and no additional mitigation is required. TABLE 5 ESTIMATED MAXIMUM DAILY CONSTRUCTION EMISSIONS Emissions (lbs/day) Year VOC NOx CO SOx < <1 3 2 Maximum Emissions <1 4 SCAQMD Thresholds (Table 4) Exceeds SCAQMD Thresholds? No No No No No No lbs/day: pounds per day; VOC: volatile organic compound; NOx: nitrogen oxides; CO: carbon monoxide; SOx: sulfur oxides; : respirable particulate matter 10 microns or less in diameter; : fine particulate matter 2.5 microns or less in diameter; SCAQMD: South Coast Air Quality Management District. Source: SCAQMD 2015 (thresholds); see Attachment A for CalEEMod model outputs. Localized Significance Thresholds/Ambient Air Quality In addition to the mass daily emissions thresholds established by the SCAQMD, short-term local impacts to nearby sensitive receptors from on-site emissions of NO 2, CO,, and are examined based on SCAQMD localized significance threshold (LST) methodology. To assess local air quality impacts for development projects without complex dispersion modeling, the SCAQMD developed screening (lookup) tables to assist lead agencies in evaluating impacts. The LST method is recommended to be limited to projects that are five acres or less. For the purposes of an LST analysis, the SCAQMD considers receptors where it is possible that an individual could remain for 1 hour for NO 2 and CO exposure and 24 hours for and exposure. The emissions limits in the lookup tables are based on the SCAQMD s Ambient Air Quality Standards (SCAQMD 2016). The closest receptors to the Project site are residences adjacent to its northern boundary; there are also residences east and west of the Project site, and Rotary Park and Perris Lake High School are located east of the Project site. The emissions thresholds are for receptors within 25 meters (82 feet) of the Project site; the thresholds for receptors farther away would be higher, and the Project emissions would be a smaller fraction of the thresholds. R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx Air Quality and Greenhouse Gas Emissions Analysis

14 Perris Senior Housing Project Table 6 shows the maximum daily on-site emissions for construction activities compared with the SCAQMD LSTs with receptors within 25 meters. The Project site is approximately 4.2 acres in area; the thresholds shown are from the lookup tables for sites that are 2.5 acres. 1 The Project s maximum daily on-site emissions would occur during the grading phase. As shown in Table 6, the local emissions from the Project would be less than the thresholds, and no significant impacts would result. No mitigation is required. TABLE 6 LOCALIZED SIGNIFICANCE THRESHOLD EMISSIONS Emissions (lbs/day) Emissions and Thresholds NOx CO Project s maximum daily on-site emissions Localized Significance Threshold 203 1, Exceed threshold? No No No No lbs/day: pounds per day; NOx: nitrogen oxides; CO: carbon monoxide; : respirable particulate matter 10 microns or less in diameter; : fine particulate matter 2.5 microns or less in diameter; SCAQMD: South Coast Air Quality Management District. Note: Data is for SCAQMD Source Receptor Area 16, North Riverside County. Source: SCAQMD 2009 (thresholds); see Attachment A for CalEEMod model outputs Operational Emissions Operational emissions are comprised of area, energy, and mobile source emissions. The principal area source of VOC emissions associated with the Project would result from the use of consumer products; the major area source of CO emissions would be landscaping equipment. Mobile source emissions are based on estimated Project-related trip generation forecasts, as contained in the Project traffic impact analysis; the Project would generate 53 daily trips (Psomas 201). Estimated peak daily operational emissions are shown in Table. TABLE PEAK DAILY OPERATIONAL EMISSIONS Emissions (lbs/day) Source VOC NOx CO Area sources 4 <1 13 <1 <1 Energy sources <1 <1 <1 <1 <1 Mobile sources Operational Emissions * SCAQMD Significance Thresholds (Table 4) Significant Impact? No No No No No lbs/day: pounds per day; VOC: volatile organic compounds; NOx: nitrogen oxides; CO: carbon monoxide; : respirable particulate matter 10 microns or less in diameter; : fine particulate matter 2.5 microns or less in diameter; SCAQMD: South Coast Air Quality Management District; SOx: sulfur oxides. * Some totals do not add due to rounding. Notes: SOx and lead emissions are not shown as these emissions would be negligible for the Project. CalEEMod model data sheets are included in Attachment A. 1 LSTs increase as Project acreage increases; therefore, the use of the 2.5-acre LST is conservative. R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 8 Air Quality and Greenhouse Gas Emissions Analysis

15 Perris Senior Housing Project As shown in Table, the Project s operational emissions would be less than the SCAQMD CEQA significance thresholds for all criteria pollutants. Therefore, the Project s operational impact on regional emissions would be less than significant, and no additional mitigation is required. Local Emissions Localized Significance Thresholds The SCAQMD has also developed localized significance threshold methodology for operations phase emissions. Operations phase emissions that may affect receptors local to the Project include mobile and stationary sources of emissions that are generated within the Project site. The Project s maximum daily on-site emissions are shown in Table 8. The local emissions from the Project would be less than the thresholds, and no significant localized air quality impacts would result. No mitigation is required. TABLE 8 LOCALIZED SIGNIFICANCE THRESHOLD EMISSIONS Emissions (lbs/day) On-Site Emissions and Thresholds NOx CO Area Emissions 4 13 <1 <1 Energy Emissions <1 <1 <1 <1 Mobile Emissions a <1 1 <1 <1 On-Site Emissions b 4 14 <1 <1 Localized Significance Threshold 203 1, Exceed threshold? No No No No lbs/day: pounds per day; NOx: nitrogen oxides; CO: carbon monoxide; : respirable particulate matter 10 microns or less in diameter; : fine particulate matter 2.5 microns or less in diameter; SCAQMD: South Coast Air Quality Management District. a Assumes that on-site emissions are 5% of the total on- and off-site mobile emissions. b Some totals do not add due to rounding. Note: Data is for SCAQMD Source Receptor Area 16, North Riverside County. Source: SCAQMD 2009 (thresholds); see Attachment A for CalEEMod model outputs. Carbon Monoxide Hotspots In an urban setting, vehicle exhaust is the primary source of CO. Consequently, the highest CO concentrations generally are found close to congested intersections. The SoCAB has been in a state of attainment of the CAAQS since The proposed Project would generate 53 trips per day and it would generate 31 AM peak hour trips and 39 PM peak hour trips (Psomas 201). This small quantity of vehicle trips could not result in a CO hotspot due to the small magnitude of emission sources and the low emission rates that occur due to catalytic converters. Therefore, it is concluded that Project-generated traffic would not cause traffic congestion that could result in a significant local CO impact. The impact would be less than significant. Question AQ-3 Would the Project result in a cumulatively considerable net increase of any criteria pollutant for which the Project region is in non-attainment under an applicable federal or state ambient air quality standard R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 9 Air Quality and Greenhouse Gas Emissions Analysis

16 Perris Senior Housing Project (including releasing emissions which exceed quantitative thresholds for ozone precursors)? Less than Significant Impact. As identified in Table 1, Riverside County is a nonattainment area for O 3,, and. The Project would generate,, NO 2, and O 3 precursors (NOx and VOC) during short-term construction and long-term operations Construction Activities The SCAQMD s White Paper on Potential Control Strategies to Address Cumulative Impacts from Air Pollution provides the SCAQMD s approach to addressing potential cumulative impacts for projects. As per this document, Projects that exceed the project-specific significance thresholds are considered by the SCAQMD to be cumulatively considerable. This is the reason projectspecific and cumulative significance thresholds are the same. Conversely, projects that do not exceed the project-specific thresholds are generally not considered to be cumulatively significant (SCAQMD 2). Construction activities associated with the proposed Project would result in less than significant construction-related regional and localized air quality impacts, as quantified above in Tables 5 and 6, respectively. Therefore, Project-related construction emissions would not be cumulatively considerable, and the impact would be less than significant Operational Activities As shown in Table, operational emissions of VOC, NOx, CO,, and would be below the SCAQMD CEQA significance thresholds. Therefore, the Project would not contribute to a cumulatively considerable net increase of a pollutant for which the SoCAB is in nonattainment. Emissions of nonattainment pollutants or their precursors would not be cumulatively considerable and would be less than significant; no additional mitigation would be required. Question AQ-4 Would the Project result in exposure of sensitive receptors to substantial pollutant concentrations? Less than Significant Impact. A significant impact may occur when a project would generate pollutant concentrations to a degree that would significantly affect sensitive receptors, which include populations that are more susceptible to the effects of air pollution than the population at large. Exposure of sensitive receptors is addressed for the following situations: CO hotspots; criteria pollutants and toxic air contaminants (TACs, specifically diesel particulate matter [DPM]) from on-site construction; exposure to off-site TAC emissions; and asbestos and lead-based paint during demolition. Operational, long-term TACs may be generated by some industrial land uses; commercial land uses (e.g., gas stations and dry cleaners); and diesel trucks on freeways. Residential land uses do not generate substantial quantities of TACs and are therefore not addressed further in this report Carbon Monoxide Hotspot A CO hotspot is an area of localized CO pollution caused by severe vehicle congestion on major roadways, typically near intersections. Exposure of persons to CO hotspots is discussed on a Project level in response to Question AQ-2 above. As discussed previously, the increase in traffic from the Project would also not result in significant impacts at area intersections. Thus, the Project would not result in a significant impact related to CO hotspots. There would be no significant impacts, and no additional mitigation is required. R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 10 Air Quality and Greenhouse Gas Emissions Analysis

17 Perris Senior Housing Project 2.2. Criteria Pollutants from On-Site Construction Exposure of persons to NOx, CO,, and emissions is discussed in response to Question AQ-2 above. There would be no significant impacts, and no additional mitigation is required Toxic Air Contaminant Emissions from On-Site Construction Construction activities would result in short-term, Project-generated emissions of DPM from the exhaust of off-road, heavy-duty diesel equipment used for site preparation (e.g., demolition, excavation, and grading); paving; building construction; and other miscellaneous activities. CARB identified DPM as a TAC in The dose to which receptors are exposed is the primary factor used to determine health risk. Dose is a function of the concentration of a substance or substances in the environment and the duration of exposure to the substance. Thus, the risks estimated for a maximally exposed individual (MEI) are higher if a fixed exposure occurs over a longer time period. There would be relatively few pieces of off-road, heavy-duty diesel equipment in operation, and the total construction period would be a relatively short exposure period. Combined with the highly dispersive properties of DPM and additional reductions in particulate emissions from newer construction equipment, as required by USEPA and CARB regulations, construction emissions of TACs would not expose sensitive receptors to substantial emissions of TACs. The impact would be less than significant and no mitigation is required Exposure to Off-Site Toxic Air Contaminant Emissions The CARB Air Quality and Land Use Handbook: A Community Health Perspective provides guidance concerning land use compatibility with TAC sources (CARB 2). While not a law or adopted policy, the handbook offers advisory recommendations for siting sensitive receptors near uses associated with TACs (such as freeways and high-traffic roads, commercial distribution centers, rail yards, ports, refineries, dry cleaners, gasoline stations, and industrial facilities) to help keep children and other sensitive populations out of harm s way. Projects of concern for mobile sources of TACs are typically those located within 500 feet of the following types of facilities that emit significant quantities of DPM: urban roads with more than 100,000 vehicles per day; freeways or roads with a high heavy truck concentration; and/or near rail yards, ports, and/or distribution centers. The Project site is more than 500 feet from any freeway or major urban road. With respect to proximity to emissions from railroad sources, CARB recommends avoiding siting new sensitive land uses within 1,000 feet of a major service and maintenance rail yard (CARB 2); the Project site is not located within 1,000 feet of this type of facility. CARB recommends avoiding siting residences within 300 feet of a large gas station or within 500 feet of dry cleaning operations with 2 machines using perchloroethylene. There are no gas stations within 300 feet or dry cleaners within 500 feet of the Project site. The Project also does not involve emission sources with the potential for substantial levels of emissions of TACs. As such, no off-site sensitive uses would be exposed to significant levels TACs. In summary, the Project would not have the potential to expose sensitive receptors to substantial TACs from stationary or mobile sources. The impact would be less than significant and no mitigation is required. R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 11 Air Quality and Greenhouse Gas Emissions Analysis

18 Perris Senior Housing Project Question AQ-5 Would the Project create objectionable odors affecting a substantial number of people? No Impact. Potential operational phase odors could be created by cooking activities associated with residential uses. These odors would be similar to existing residential uses surrounding the Project site and throughout the City, and odors would be confined to the immediate vicinity of the proposed assisted living units. Furthermore, according to the SCAQMD s CEQA Air Quality Handbook, land uses associated with odor complaints typically include agricultural uses, wastewater treatment plants, food processing plants, chemical plants, composting, refineries, landfills, dairies, and fiberglass molding (SCAQMD 1993). The Project does not include any uses identified by the SCAQMD as being associated with odors and, therefore, would not produce objectionable odors. As such, the Project would have no impact in regards to objectionable odors. 3.0 GREENHOUSE GAS EMISSIONS ANALYSIS Relevant elements of the proposed Project related to the analysis of potential greenhouse gas (GHG) emissions impacts include (1) new construction on-site grading activities, which are expected to balance on site; (2) construction of the Proposed Project; (3) the vehicle trips generated by the proposed Project; and (4) energy used by Project occupants. 3.1 EXISTING GREENHOUSE GAS EMISSIONS CONDITIONS GHGs are global pollutants and are therefore unlike criteria air pollutants such as O 3, particulate matter ( and ), and TACs, which are pollutants of regional and local concern. While pollutants with localized air quality effects have relatively short atmospheric lifetimes (generally on the order of a few days), GHGs have relatively long atmospheric lifetimes, ranging from one year to several thousand years. Long atmospheric lifetimes allow for GHGs to disperse around the globe. Therefore, GHG effects are global, as opposed to the local and/or regional air quality effects of criteria air pollutant and TAC emissions. GHGs include carbon dioxide (CO 2 ), methane (CH 4 ), nitrous oxide (N 2 O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF 6 ). GHGs vary widely in the power of their climatic effects; therefore, climate scientists have established a unit called global warming potential (GWP). The GWP of a gas is a measure of both potency and lifespan in the atmosphere as compared to CO 2. Carbon dioxide equivalent (CO 2 e) is a quantity that enables all GHG emissions to be considered as a group despite their varying GWP. The GWP of each GHG is multiplied by the prevalence of that gas to produce CO 2 e. The Project site is currently undeveloped; thus, no GHG emissions are currently generated at the Project site. 3.2 REGULATORY BACKGROUND Significant changes in global climate patterns have been associated with global warming, which is an average increase in the temperature of the atmosphere near the Earth s surface; this is attributed to an accumulation of GHG emissions in the atmosphere. GHGs trap heat in the atmosphere which, in turn, increases the Earth s surface temperature. Some GHGs occur naturally and are emitted to the atmosphere through natural processes, while others are created and emitted solely through human activities. R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 12 Air Quality and Greenhouse Gas Emissions Analysis

19 Perris Senior Housing Project On June 1, 2, Governor Arnold Schwarzenegger signed Executive Order S-3-05, which calls for a reduction in GHG emissions to the year 2000 level by 2010, to year 1990 levels by 2020, and to 80 percent below 1990 levels by The principal overall State plan and policy adopted for the purpose of reducing GHG emissions is Assembly Bill (AB) 32 (California Global Warming Solutions Act of 2006). AB 32 establishes regulatory, reporting, and market mechanisms to achieve quantifiable reductions in GHG emissions and establishes a cap on statewide GHG emissions. AB 32 recognizes that California is the source of substantial amounts of GHG emissions. The statute states the following: Global warming poses a serious threat to the economic well-being, public health, natural resources, and the environment of California. The potential adverse impacts of global warming include the exacerbation of air quality problems, a reduction in the quality and supply of water to the state from the Sierra snowpack, a rise in sea levels resulting in the displacement of thousands of coastal businesses and residences, damage to marine ecosystems and the natural environment, and an increase in the incidences of infectious diseases, asthma, and other human health-related problems. In order to avert these consequences, AB 32 establishes a State goal of reducing GHG emissions to 1990 levels by the year 2020, codifying the Executive Order S-3-05 goal. CARB approved a Climate Change Scoping Plan as required by AB 32 in The Climate Change Scoping Plan proposes a comprehensive set of actions designed to reduce overall carbon GHG emissions in California, improve our environment, reduce our dependence on oil, diversify our energy sources, save energy, create new jobs, and enhance public health (CARB 2008). The Climate Change Scoping Plan has a range of GHG-reduction actions which include direct regulations, alternative compliance mechanisms, monetary and non-monetary incentives, voluntary actions, market-based mechanisms such as a cap-and-trade system, and an AB 32 implementation regulation to fund the program. This plan is required to be updated every five years and, on February 10, 2014, CARB released the Draft Proposed First Update to the Climate Change Scoping Plan (CARB 2014). The board approved the final First Update to the Climate Change Scoping Plan on May 22, The first update describes California s progress towards AB 32 goals, stating that California is on track to meet the near-term 2020 greenhouse gas limit and is well positioned to maintain and continue reductions beyond 2020 as required by AB 32 (CARB 2014). The latest update occurred in January 201 and incorporates the 40 percent reduction to 1990 emissions levels by 2030 (CARB 201b). California Executive Order B (April 29, 2015) set an interim statewide emission target to reduce GHG emissions to 40 percent below 1990 levels by 2030, and directed State agencies with jurisdiction over GHG emissions to implement measures pursuant to statutory authority to achieve this 2030 target and the 2050 target of 80 percent below 1990 levels. On September 8, 2016, the Governor signed Senate Bill 32 (SB 32) to codify the GHG reduction goals of EO B-30-15, requiring the State to reduce GHG emissions by 40 percent below 1990 levels by 2030 (California Health and Safety Code, Section 38566). This goal is expected to keep the State on track to meeting the goal set by EO S-3-05 of reducing GHG emissions by 80 percent below 1990 levels by 2050 (California Legislative Information 201a). SB 32 s findings state that CARB will achieve the state s more stringent greenhouse gas emission reductions in a manner that benefits the state s most disadvantaged communities and is transparent and accountable to the public and the Legislature. AB 19 was signed at the same time and will make sure that the SB 32 goals are met by requiring CARB to provide annual reports of GHGs, criteria pollutants, and TACs by facility, City and R:\Projects\EVE\3EVE010100\AQ_GHG\Perris Senior Housing AQ_GHG Report-0121.docx 13 Air Quality and Greenhouse Gas Emissions Analysis