Appendix B
Brockton Parking Garage Project March 2025
APPENDIX B :
AIR QUALITY ASSESSMENT
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices
Air Quality Assessment
Riverside Community Hospital Parking
Structure
Prepared for:
City of Riverside
Community Development Department
Planning Division
3900 Main Street, Third Floor
Riverside, CA 92522
Prepared by:
Kimley-Horn and Associates, Inc.
1100 W. Town and Country Road, Suite 700
Orange, California 92868
714.939.1030
December 2024
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TABLE OF CONTENTS
1.0 INTRODUCTION ........................................................................................................... 1
1.1 Project Background .................................................................................................... 1
1.2 Project Location ......................................................................................................... 2
1.3 Project Description ..................................................................................................... 3
1.4 Construction .............................................................................................................. 3
2.0 ENVIRONMENTAL SETTING ........................................................................................... 7
2.1 Climate and Meteorology ............................................................................................ 7
2.2 Air Pollutants of Concern ............................................................................................ 8
2.3 Sensitive Receptors .................................................................................................. 11
3.0 REGULATORY SETTING ................................................................................................ 12
3.1 Federal ..................................................................................................................... 12
3.2 State of California ..................................................................................................... 12
3.3 Regional ................................................................................................................... 14
4.0 SIGNIFICANCE CRITERIA AND METHODOLOGY ............................................................. 18
4.1 Air Quality Thresholds ............................................................................................... 18
4.2 Methodology ............................................................................................................ 20
5.0 POTENTIAL IMPACTS AND MITIGATION ......................................................................... 22
5.1 Air Quality Analysis ................................................................................................... 22
5.2 Cumulative Impacts ................................................................................................. 37
6.0 REFERENCES .............................................................................................................. 38 Figures
Figure 1: Regional Map ............................................................................................................ 4 Figure 2: Aerial of the Project Site ............................................................................................ 5 Figure 3: Conceptual Site Plan ................................................................................................ 6 Tables
Table 1: Air Contaminants and Associated Public Health Concerns ............................................... 8 Table 2: Ambient Air Quality Data................................................................................................ 10 Table 3: Sensitive Receptors ....................................................................................................... 11 Table 4: State and Federal Ambient Air Quality Standards ............................................................ 13 Table 5: South Coast Air Basin Attainment Status ........................................................................ 15 Table 6: South Coast Air Quality Management District Emissions Thresholds ............................... 18 Table 7: Local Significance Thresholds for Construction/Operations ............................................ 20 Table 8: Project Construction Criteria Pollutant Emissions .......................................................... 25 Table 9: Operational Criteria Pollutant Emissions ........................................................................ 26 Table 10: Equipment-Specific Grading Rates ............................................................................... 31 Table 11: Localized Significance of Construction Emissions ........................................................ 32 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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Table 12: Localized Significance of Operational Emissions .......................................................... 33 Appendices
Appendix A: Air Quality Modeling Data
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LIST OF ABBREVIATED TERMS
AQMP Air Quality Management Plan
AB Assembly Bill
ADT Average Daily Traffic
CAPCOA California Air Pollution Control Officers Association CARB California Air Resources Board
CAAQS California Ambient Air Quality Standards
CCAA California Clean Air Act
CalEEMod
CEC
California Emissions Estimator Model
California Energy Commission
CEQA California Environmental Quality Act
CO Carbon monoxide
cy cubic yards
DPM Diesel particulate matter
FCAA Federal Clean Air Act
H2S Hydrogen sulfide
Pb Lead
LST Localized significance threshold
µg/m3 Micrograms per cubic meter
mg/m3 Milligrams per cubic meter
NAAQS National Ambient Air Quality Standards
NO2 Nitrogen dioxide
NOx Nitrogen oxide
O3 Ozone
PM10 Particulate matter less than 10 microns in diameter PM2.5 Particulate matter less than 2.5 microns in diameter ppm Parts per million
ROG Reactive organic gases
RTP/SCS Regional Transportation Plan/Sustainable Communities Strategy SB Senate Bill
SRA Source receptor area
SCAB South Coast Air Basin
SCAQMD South Coast Air Quality Management District
SCAG Southern California Association of Governments
sf Square foot
SO4-2 Sulfates
SO2 Sulfur dioxide
TAC Toxic air contaminant
U.S. EPA U.S. Environmental Protection Agency
C2H3Cl Vinyl chloride
VOC Volatile organic compound
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1.0 INTRODUCTION
This report documents the results of an Air Quality Assessment completed for the Riverside Community Hospital Parking Structure Project (“Project” or “proposed Project”). An Environmental Impact Report (EIR) was prepared for the Riverside Community Hospital Expansion Project. The construction of new parking structures was contemplated as future discretionary projects for Phase IIc within the Riverside Community Hospital Specific Plan Expansion Project Final EIR (2014 Final EIR). The construction of the Project has been proposed as part of Phase IIb. This comparative analysis has been undertaken to analyze whether the proposed Project would result in any new or substantially more severe significant environmental impacts as compared to the conclusions discussed in the certified 2014 Final EIR. In addition, this air quality technical report evaluates the potential emissions associated with the Project pursuant to 2014 Final EIR Mitigation Measure (MM) AQ-2.
1.1 Project Background
The Riverside Community Hospital Specific Plan (RCHSP) was adopted (Resolution No. 26690), and the 2014 Final EIR was certified by the Riverside City Council in May 2014 (Resolution No. 22689).
The 2014 Final EIR was previously prepared to evaluate the potential environmental impacts associated with the RCHSP, which provides a roadmap to guide future expansion plans and address compliance with the Alfred E. Alquist Hospital Seismic Safety Act (Alquist Act) of 1 973, Senate Bill (SB) 1953. The RCHSP includes a two-phased campus master plan for the future expansion of RCH on approximately 22.5 acres over a 30-year period. The primary focus of Phase I is to construct a new hospital bed tower to alleviate seismic concerns associated with existing buildings and to meet seismic retrofit requirements as required by SB 1953. Phase II also addresses seismic concerns and includes potential future long-range development broken down into Phase IIA, Phase IIB, and Phase IIC.
As described in the 2014 Final EIR, Phase I would involve the construction of a new 251,000-square- foot, seven-story hospital bed tower. Phase IIA would entail the demolition of Building A to allow the construction of an approximately 100,000-square-foot mixed-use building and additional surface or structure parking. Phase IIB would consist the demolition of two parking structures to allow for the construction of a second new, estimated nine-story, 600,000+ square foot replacement bed tower.
Phase IIB also includes additional convenience parking during this phase. The final phase of long - range improvements planned for 2030 or later would involve the addition of 38 licensed beds, to take the campus-wide total to 600 licensed beds (this could occur in Phase IIB if need is demonstrated prior to 2030), construction of ancillary services as necessary, and construction of surface or structured parking as needed to support growth.
The Approved Project would increase patient and support services, add several new buildings, renovate and demolish a number of existing buildings or structures onsite. One or two standalone parking structures may also be included in the master planned changes to the site. These and other possible changes on the site would be phased over a period of many years as funding becomes available and services are needed. The hospital may expand services into the community and may add new services as medical practices change over time and needs arise.
The discussion in the 2014 Final EIR noted that the phasing plan proposed was only an estimate PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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based on plans and conditions at that time. It was identified that many factors would affect the timing and funding of the planned improvements, so the indicated phasing was merely suggestive of what may occur in the future, but the actual phasing and locations of the various improvements may occur at times different than those identified in the 2014 Final EIR, due to unanticipated delays or conditions. Some phases may even be implemented prior to previous phases.
The 2014 Final EIR was prepared to evaluate the environmental impacts of the Approved Project and address various actions by the City and other agencies to adopt and implement the Approved Project. It was the intent of the 2014Final EIR to inform the City, other agencies, and interested parties of the potential environmental impacts of the Approved Project. The Phasing Plan described in the 2014 Final EIR included the following:
• Phase I (2014 to 2017) – Completed
• Phase II, divided into three sub-phases:
o Phase IIA (2017-2024),
o Phase IIB (2024-2029), and
o Phase IIC (2030-2043).
1.2 Project Location
The approximately 1.66-acre Project site (Assessor Parcel Numbers [APN] 217060024, 217060026, 217060027, 217060028, 217060020, and 217060009) is located in the City of Riverside, California.
The site is approximately 0.42 miles west of State Route 91 (SR -91) and approximately 1.60 miles south of SR-60. Specifically, the Project site is located at the northwest corner of Brockton Avenue and 14th Street. Most of the Project site (APNs 217060024, 217060026, 217060027, and 217060028) is within the Riverside Community Hospital Specific Plan (RCHSP), however, two parcels (APNs 217060020 and 217060009) are within the Downtown Specific Plan. A Specific Plan Amendment is proposed to amend the RCHSP boundary to include the two parcels that are currently within the Downtown Specific Plan (i.e., APNs 217060020 and 217060009), which currently contain a vacant medical office building and auto body shop. See Figure 1: Regional Map and Figure 2: Aerial of the Project Site.
The Brockton Parking Garage Project (Project) site is currently developed with an auto body shop, Women’s Services Building (Building M), Brockton Storage Building (Building L), and medical office building that are also owned by the Project Applicant. Ornamental landscaping is provided along the Project site frontage on Brockton Avenue and 14th Street, as well as throughout the Project site.
Pedestrian sidewalk is provided along the Project site frontage on Brockton Avenue and 14th Street.
Overhead utility lines and lighting are also provided along the Project site frontage on Brockton Avenue and 14th Street.
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1.3 Project Description
Site Development
The Project would include the demolition of 61,500 square feet of existing buildings to construct a new approximately 20 7,780 square foot parking garage. The parking garage would accommodate 587 parking spaces within a five -level parking garage structure (four levels above ground and one level subterranean). Figure 3: Conceptual Site Plan depicts the proposed development. The parking garage would support RCH Campus’s parking demand, compensating for the loss in parking caused by the anticipated demolition of two parking garages (Buildings I and J) as part of Tower H (Building S) construction which is estimated to start construction in September 2026. Tower H was previously analyzed in the 2014 Final EIR; therefore, the analysis is based only on the development of a parking garage.
The proposed parking garage would be designed to meet the 2022 California Building Code requirements for an “open” parking garage. Stair and elevator cores are proposed on the east side of the building, closest to the hospital. Accessible travel paths are proposed along the garage’s east side, connecting the garage with the existing hospital.
Primary vehicular access to the Proposed Project site would be provided via one existing left -out restricted driveway on Brockton Avenue (Driveway 1), one proposed full -movement driveway on Brockton Avenue (Driveway 2), one proposed parking garage egress-o nly driveway on Brockton Avenue (Driveway 3), and one existing driveway on 14
th Street with proposed left -out restricted
access (Driveway 4). All driveways would be unsignalized. Parking aisles generally run east to west, with 90-degree parking on both sides and a parkable ramp at the southern bay. Electrical vehicle charging stations and bicycle parking would be located on Level 0. Accessible parking spaces would be located on Level 1 with an accessible pathway connecting the garage to the future Tower H.
1.4 Construction
Project construction is anticipated to begin in April 2025 and finish in July 2026. The Project is anticipated to require approximately 17,000 cubic yards (cy) of cut and 2,000 cy of fill, resulting in a net of 15,000 cy soil export. Construction would be in compliance with Riverside Municipal Code Section 7.35.020, which limits construction between the hours of 7:00AM and 7:00PM on weekdays and between 8:00AM and 5:00PM on Saturdays. Construction hours, allowable workdays, and the phone number of the job superintendent shall be clearly posted at all construction entrances to allow surrounding property owners and residents to contact the job superintendent.
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Not to scale.
Brockton Parking Garage Project
Figure 1: Regional Vicinity Map
91 91
2 10 10 10 10
15 15
605
210
405
405
Cerritos
Chino Hills
Glendora
Arcadia
Tustin
La Habra
Jurupa Valley
Rancho
Cucamonga
Anaheim
West Covina
Fontana
Norwalk
Fullerton
Garden Grove
OntarioPomona
Corona
Santa Ana
El Monte
Orange
5688 ft
4620 ft
O r a n g e
Rancho Santa
Margarita
Lake Forest
Newport Beach
Fountain Valley
Mission Viejo
Huntington
Beach Costa Mesa
Irvine
11489 ft
8519 ft
BearCreek
38 243
215
Morongo
Reservation
Soboba
Reservation
San Bernardino
National Forest
Grand Terrace
Loma Linda
Crestline
Beaumont
Redlands
Highland
Rialto
San Gorgonio
Pass
Lake Arrowhead
Big Bear City
Yucaipa
Hemet
San Bernardino
Riverside
79 R3
Lakeland Village
Wildomar
Menifee
Lake Elsinore
Murrieta
Mount San
Jacinto State
Park
Idyllwild
Source: ESRI, 2024Source: ESRI, 2024
Project Site
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Not to scale.
Brockton Parking Garage Project
Figure 2: Local Vicinity Map
Source: Nearmaps, 2024Source: Nearmaps, 2024
Project Site
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Not to scale.
Brockton Parking Garage Project
Figure 3: Conceptual Site Plan
Source: HKS Architects, INC.Source: HKS Architects, INC.
Project Site
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2.0 ENVIRONMENTAL SETTING
2.1 Climate and Meteorology
The California Air Resources Board (CARB) divides the State into 15 air basins that share similar meteorological and topographical features.1 The Project is located within the South Coast Air Basin (SCAB), which includes the non- desert portions of Los Angeles, Riverside, and San Bernardino counties, as well as all of Orange County. The SCAB is on a coastal plain with connecting broad valleys and low hills, bounded by the Pacific Ocean on the southwest and high mountains forming the remainder of the perimeter.
2 Air quality in this area is determined by such natural factors as topography, meteorology, and climate, in addition to the presence of existing air pollution sources and ambient conditions. These factors along with applicable regulations are discussed below.
The SCAB is part of a semi -permanent high-pressure zone in the eastern Pacific. As a result, the climate is mild and tempered by cool sea breezes. This usually mild weather pattern is occasionally interrupted by periods of extreme heat, winter storms, and Santa Ana winds. The annual average temperature throughout the 6,645 -square-mile SCAB ranges from low 60 to high 80 degrees Fahrenheit with little variance. With more oceanic influence, coastal areas show less variability in annual minimum and maximum temperatures than inland areas.
Contrasting the steady pattern of temperature, rainfall is seasonally and annually highly variable.
Almost all annual rainfall occurs between the months of November and April. Summer rainfall is reduced to widely scattered thundershowers near the coast, with slightly heavier activity in the east and over the mountains.
Although the SCAB has a semiarid climate, the air closer to the Earth’s surface is typically moist because of the presence of a shallow marine layer. Except for occasional periods when dry, continental air is brought into the SCAB by offshore winds, the “o cean effect” is dominant. Periods of heavy fog are frequent and low clouds known as high fog are characteristic climatic features, especially along the coast. Annual average humidity is 70 percent at the coast and 57 percent in the eastern portions of the SCAB.
Wind patterns across the SCAB are characterized by westerly or southwesterly onshore winds during the day and easterly or northeasterly breezes at night. Wind speed is typically higher during the dry summer months than during the rainy winter. Between periods of wind, air stagnation may occur in both the morning and evening hours. Air stagnation is one of the critical determinants of air quality conditions on any given day. During winter and fall, surface high- pressure systems over the SCAB, combined with other meteorological conditions, result in very strong, downslope Santa Ana winds.
These winds normally continue for a few days before predominant meteorological conditions are reestablished.
3 The mountain ranges to the east affect the diffusion of pollutants by inhibiting the eastward transport of pollutants. Air quality in the SCAB generally ranges from fair to poor and is similar to air quality in
1 South Coast Air Quality Management District, 2022 Air Quality Management District , 2022. Available at:
https://www.aqmd.gov/docs/default -source/clean-air-plans/air-quality-management-plans/2022-air-quality-management- plan/final-2022-aqmp/final-2022-aqmp.pdf?sfvrsn=16, accessed November 2024 2 South Coast Air Quality Management District, CEQA Air Quality Handbook , 1993. 3 California Air Resources Board, Almanac Resources, 2024. Available at: https://ww2.arb.ca.gov/resources/documents/almanac- resources, accessed November 2024
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most of coastal Southern California. The entire region experiences heavy concentrations of air pollutants during prolonged periods of stable atmospheric conditions.
In addition to the characteristic wind patterns that affect the rate and orientation of horizontal pollutant transport, two distinct types of temperature inversions control the vertical depth through which air pollutants are mixed. These inversions are the marine inversion and the radiation inversion.
The height of the base of the inversion at any given time is called the “mixing height.” 4 The combination of winds and inversions is a critical determinant leading to highly degraded air quality for the SCAB in the summer and generally good air quality in the winter.
2.2 Air Pollutants of Concern
The air pollutants emitted into the ambient air by stationary and mobile sources are regulated by state and federal laws. These regulated air pollutants are known as “criteria air pollutants” and are categorized into primary and secondary pollutants.
Primary air pollutants are emitted directly from sources. Carbon monoxide (CO), reactive organic gases (ROG), nitrogen oxide (NO
X), sulfur dioxide (SO 2), coarse particulate matter (PM 10), fine particulate matter (PM 2.5), and lead are primary air pollutants. Of these, CO, NO X, SO 2, PM10, and PM2.5 are criteria pollutants. 5 ROG and NO X are criteria pollutant precursors and form secondary criteria pollutants through chemical and photochemical reactions in the atmosphere.6 For example, the criteria pollutant ozone (O 3) is formed by a chemical reaction between ROG and NO X in the presence of sunlight. O3 and nitrogen dioxide (NO2) are the principal secondary pollutants. Sources and health effects commonly associated with criteria pollutants are summarized in Table 1: A ir Contaminants and Associated Public Health Concerns.
Table 1: Air Contaminants and Associated Public Health Concerns Pollutant Major Man-Made Sources Human Health Effects
Particulate Matter
(PM10 and PM2.5)
Power plants, steel mills, chemical
plants, unpaved roads and parking
lots, wood-burning stoves and
fireplaces, automobiles and others.
Increased respiratory symptoms,
such as irritation of the airways,
coughing, or difficulty breathing;
asthma; chronic bronchitis; irregular
heartbeat; nonfatal heart attacks;
and premature death in people with
heart or lung disease. Impairs
visibility.
Ozone (O3) Formed by a chemical reaction
between reactive organic
gases/volatile organic compounds
(ROG or VOC)
1 and nitrogen oxides
(NOX) in the presence of sunlight.
Motor vehicle exhaust industrial
emissions, gasoline storage and
transport, solvents, paints and
landfills.
Irritates and causes inflammation of
the mucous membranes and lung
airways; causes wheezing, coughing,
and pain when inhaling deeply;
decreases lung capacity; aggravates
lung and heart problems. Damages
plants; reduces crop yield.
Sulfur Dioxide (SO2) A colorless gas formed when fuel
containing sulfur is burned and when
gasoline is extracted from oil.
Examples are petroleum refineries,
Respiratory irritant. Aggravates lung
and heart problems. In the presence
of moisture and oxygen, sulfur
dioxide converts to sulfuric acid
4 South Coast Air Quality Management District, Final 2016 Air Quality Management Plan, March 2017 5 U.S. Environmental Protection Agency, Criteria Air Pollutants, https://www.epa.gov/criteria -air-pollutants, accessed November 2024 6 Ibid.
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Table 1: Air Contaminants and Associated Public Health Concerns Pollutant Major Man-Made Sources Human Health Effects
cement manufacturing, metal
processing facilities, locomotives,
and ships.
which can damage marble, iron and
steel. Damages crops and natural
vegetation. Impairs visibility.
Precursor to acid rain.
Carbon Monoxide (CO) An odorless, colorless gas formed
when carbon in fuel is not burned
completely; a component of motor
vehicle exhaust.
Reduces the ability of blood to
deliver oxygen to vital tissues,
affecting the cardiovascular and
nervous system. Impairs vision,
causes dizziness, and can lead to
unconsciousness or death.
Nitrogen Dioxide (NO2) A reddish-brown gas formed during fuel combustion for motor vehicles
and industrial sources. Sources
include motor vehicles, electric
utilities, and other sources that burn
fuel.
Respiratory irritant; aggravates lung
and heart problems. Precursor to O3.
Contributes to global warming and
nutrient overloading which
deteriorates water quality. Causes
brown discoloration of the
atmosphere.
Lead (Pb) Lead is a metal found naturally in the
environment as well as in
manufactured products. The major
sources of lead emissions have
historically been motor vehicles
(such as cars and trucks) and
industrial sources. Due to the phase
out of leaded gasoline, metals
processing is the major source of
lead emissions to the air today. The
highest levels of lead in air are
generally found near lead smelters.
Other stationary sources are waste
incinerators, utilities, and lead-acid
battery manufacturers.
Exposure to lead occurs mainly
through inhalation of air and
ingestion of lead in food, water, soil,
or dust. It accumulates in the blood,
bones, and soft tissues and can
adversely affect the kidneys, liver,
nervous system, and other organs.
Excessive exposure to lead may
cause neurological impairments
such as seizures, mental retardation,
and behavioral disorders. Even at low
doses, lead exposure is associated
with damage to the nervous systems
of fetuses and young children,
resulting in learning deficits and
lowered IQ.
1. Volatile Organic Compounds (VOCs or Reactive Organic Gases [ROG]) are hydrocarbons/organic gases that are formed solely of hydrogen and carbon. There are several subsets of organic gases including ROGs and VOCs. Both ROGs and VOCs are emitted from the incomplete combustion of hydrocarbons or other carbon-based fuels. The major sources of hydrocarbons are combustion engine exhaust, oil refineries, and oil -fueled power plants; other common sources are petroleum fuels, solvents, dry cleaning solutions, and paint (via evaporation).
Sources: U.S. Environmental Protection Agency, Criteria Air Pollutants, https://www.epa.gov/criteria -air-pollutants, accessed November 2024
Toxic Air Contaminants
Toxic air contaminants (TACs) are airborne substances that can cause short ‐term (acute) or long ‐ term (i.e. chronic, carcinogenic or cancer causing) adverse human health effects (i.e. injury or illness). TACs include both organic and inorganic chemical substances. They may be emitted from a variety of common sources including gasoline stations, automobiles, dry cleaners, industrial operations, and painting operations. The current California list of TACs includes more than 200 compounds, including particulate emissions from diesel‐fueled engines. 7 CARB has identified diesel particulate matter (DPM) as a toxic air contaminant. DPM differs from other TACs in that it is not a single substance, but rather a complex mixture of hundreds of
7 California Air Resources Board, Common Air Pollutants, 2024. Available at: https://ww2.arb.ca.gov/resources/common -air-pollutants, accessed November 2024
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substances. Diesel exhaust is a complex mixture of particles (such as DPM) and gases produced when an engine burns diesel fuel. DPM includes the particle -phase constituents in diesel exhaust.
DPM is a concern because it causes lung cancer; many compounds found in diesel exhaust are carcinogenic. The chemical composition and particle sizes of DPM vary between different engine types (heavy- duty, light -duty), engine operating conditions (idle, accelerate, decelerate), fuel formulations (high/low sulfur fuel), and the year of the engine. Some short -term (acute) effects of diesel exhaust include eye, nose, throat, and lung irritation, and diesel exhaust can cause coughs, headaches, light-headedness, and nausea. DPM poses the greatest health risk among the TACs.
Almost all diesel exhaust particle mass is 10 microns or less in diameter. Due to their extremely small size, these particles can be inhaled and eventually trapped in the bronchial and alveolar regions of the lung.
8 Ambient Air Quality
CARB monitors ambient air quality at approximately 250 air monitoring stations across the State.
These stations usually measure pollutant concentrations ten feet above ground level; therefore, air quality is often referred to in terms of ground -level concentrations. Existing levels of ambient air quality, historical trends, and projections near the Project are documented by measurements made by the South Coast Air Quality Management District (SCAQMD), the air pollution regulatory agency in the SCAB that maintains air quality monitoring stations which process ambient air quality measurements.
The closest air monitoring station to the Project that monitor ambient concentrations of O 3, CO, NO2,
PM10 and PM2.5 is the Rubidoux – Mission Boulevard Station (located approximately 2.5 miles to the northwest of the Project Site). Local air quality data from 2020 to 2022 (the latest currently available) are provided in Table 2: Ambient Air Quality Data w hich lists the monitored maximum concentrations and number of exceedances of state or federal air quality standards for each year.
Table 2: Ambient Air Quality Data
Criteria Pollutant 2021 2022 2023
Ozone (O3)
1-hour Maximum Concentration (ppm) 0.117 0.122 0.139
8-hour Maximum Concentration (ppm) 0.098 0.095 0.107
Number of Days Standard Exceeded
CAAQS 1-hour (>0.09 ppm) 20 30 48
NAAQS 8-hour (>0.070 ppm) 55 70 69
Carbon Monoxide (CO)
1-hour Maximum Concentration (ppm) 2.106 3.272 1.409
Number of Days Standard Exceeded
NAAQS 1-hour (>35 ppm) 0 0 0
CAAQS 1-hour (>20 ppm) 0 0 0
Nitrogen Dioxide (NO2)
1-hour Maximum Concentration (ppm) 0.060 0.056 0.055
Number of Days Standard Exceeded
NAAQS 1-hour (>100 ppm) 0 0 0
CAAQS 1-hour (>0.18 ppm) 0 0 0
Particulate Matter Less Than 10 Microns (PM10)
National 24-hour Maximum Concentration 76.5 153.6 166.5
8 California Air Resources Board, Overview: Diesel Exhaust & Health , https://ww2.arb.ca.gov/resources/overview -diesel-exhaust-and- health, accessed November 2024
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Table 2: Ambient Air Quality Data
Criteria Pollutant 2021 2022 2023
State 24-hour Maximum Concentration 114.3 61.9 95.1
State Annual Average Concentration (CAAQS=20
µg/m3) 33.2 30.0 *
Number of Days Standard Exceeded
NAAQS 24-hour (>150 µg/m3) 0 0 1.0
CAAQS 24-hour (>50 µg/m3) 43.7 11.8 *
Particulate Matter Less Than 2.5 Microns (PM2.5)
National 24-hour Maximum Concentration 82.1 38.5 74.3
State 24-hour Maximum Concentration 82.1 38.5 74.4
Number of Days Standard Exceeded
NAAQS 24-hour (>35 µg/m3) 11.0 1.0 2.1
NAAQS = National Ambient Air Quality Standards; CAAQS = California Ambient Air Quality Standards; ppm = parts per million; µg/m3 = micrograms per cubic meter; – = not measured; * insufficient (or no) data available to determine the value Measurements taken at the Rubidoux – Mission Boulevard Monitoring Station at 5888 Mission Blvd, California 92509 (CARB #33144).
Source: All pollutant measurements are from the CARB Aerometric Data Analysis and Management system database (https://www.arb.ca.gov/adam) except for CO and NO2, which were retrieved from the CARB Air Quality and Meteorological Information System (https://www.arb.ca.gov/aqmis2/aqdselect.php).
2.3 Sensitive Receptors
Sensitive populations are more susceptible to the effects of air pollution than is the general population. Some land uses are considered more sensitive to changes in air quality than others, depending on the population groups and the activities involved. Sensitive uses include residences, schools, playgrounds, childcare centers, long -term health facilities, rehabilitation centers, convalescent centers, and retirement homes.9 Sensitive land uses nearest to the Project are listed in Table 3: Sensitive Receptors.
Table 3: Sensitive Receptors
Receptor Description1 Distance2 and Direction
from the RCHSP Area
Distance3 from the
Project
1 – Calvary Presbyterian Church 60 feet to the south 480 feet 2 – Riverside Community Players4 65 feet to the east 65 feet 3 – Newman Park 630 feet to the northeast 1,090 feet
4 – Evans Sports Complex 450 feet to the south 640 feet 5 – Nearest Residence along 14th Street 225 feet to the northwest 225 feet 6 – Grant Elementary School 75 feet to the north 75 feet 7 – Daycare on Magnolia Avenue and 15th Street 560 feet to the southeast 1,100 feet Source: Google Earth, 2024
1. Sensitive receptor locations are the same as those identified in the 2014 Final EIR for the Riverside Community Hospital Expansion Project.
2. Distance measured from the RCHSP boundary to the nearest receptor.
3. Distance measured from the proposed construction area to the nearest receptor.
4. This use is not considered a sensitive use with regard to air quality emissions but has been listed to remain consistent with the noise analysis.
9 Dudek, Draft Environmental Impact Report for the Riverside Community Hospital Expansion Project, February 2014 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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3.0 REGULATORY SETTING
3.1 Federal
Federal Clean Air Act
Air quality is federally protected by the Federal Clean Air Act (FCAA; 42 U.S.C. §§ 7401 et seq.) and its amendments. Under the FCAA, the United States Environmental Protection Agency (U.S. EPA) developed the primary and secondary National Ambient Air Quality Standards (NAAQS) for the criteria air pollutants including O
3, NO2, CO, SO2, PM10, PM2.5, and lead. Proposed projects in or near nonattainment areas could be subject to more stringent air- permitting requirements. The FCAA requires each state to prepare a State Implementation Plan to demonstrate how it will attain the NAAQS within the federally imposed deadlines.
The U.S. EPA can withhold certain transportation funds from states that fail to comply with the planning requirements of the FCAA. If a state fails to correct these planning deficiencies within two years of Federal notification, the U.S. EPA is required to develop a Federal implementation plan for the identified nonattainment area or areas. The provisions of 40 Code of Federal Regulations Parts 51 and 93 apply in all nonattainment and maintenance areas for transportation- related criteria pollutants for which the area is designated nonattainment or has a maintenance plan. The U.S. EPA has designated enforcement of air pollution control regulations to the individual states. Applicable federal standards are summarized in Table 4: State and Federal Ambient Air Quality Standards.
3.2 State of California
California Air Resources Board
CARB administers the air quality policy in California. The California Ambient Air Quality Standards (CAAQS) were established in 1969 pursuant to the Mulford -Carrell Act. These standards, included with the NAAQS in Table 4, are generally more stringent and apply to more pollutants than the NAAQS. In addition to the criteria pollutants, CAAQS have been established for visibility reducing particulates, hydrogen sulfide, and sulfates.
10 The California Clean Air Act (CCAA) requires that each local air district prepare and maintain an Air Quality Management Plan (AQMP) to achieve compliance with the CAAQS. These AQMPs also serve as the basis for the preparation of the State Implementation P lan for meeting the federal clean air standards for the State of California. 11 Like the U.S. EPA, CARB also designates areas within California as either attainment or nonattainment for each criteria pollutant based on whether the CAAQS have been achieved. Under the CCAA, areas are designated as nonattainment for a pollutant if air quality data shows that a state standard for the pollutant was violated at least once during the previous three calendar years. Exceedances that are affected by highly irregular or infrequent events such as wildfires, volcanoes, etc. are not considered violations of a state standard, and are not used as a basis for designating areas as nonattainment. The applicable State standards are summarized
10 California Air Resources Board, California Ambient Air Quality Standards , https://ww2.arb.ca.gov/resources/california -ambient-air- quality-standards, accessed November 2024
11 South Coast Air Quality Management District, Final 2016 Air Quality Management Plan , March 2017. https://www.aqmd.gov/docs/default -source/clean-air-plans/air-quality-management-plans/2016-air-quality-management- plan/final-2016-aqmp/final2016aqmp.pdf?sfvrsn=15 , accessed November 2024 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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in Table 4.
Table 4: State and Federal Ambient Air Quality Standards Pollutant Averaging Time State Standards1 Federal Standards2 Ozone (O3) 2, 5, 7
8 Hour 0.070 ppm (137 µg/m3) 0.070 ppm
1 Hour 0.09 ppm (180 µg/m3) NA
Carbon Monoxide (CO) 8 Hour 9.0 ppm (10 mg/m3) 9 ppm (10 mg/m3) 1 Hour 20 ppm (23 mg/m3) 35 ppm (40 mg/m3)
Nitrogen Dioxide (NO2) 1 Hour 0.18 ppm (339 µg/m3) 0.10 ppm11 Annual Arithmetic Mean 0.030 ppm (57 µg/m3) 0.053 ppm (100 µg/m3) Sulfur Dioxide (SO2) 8
24 Hour 0.04 ppm (105 µg/m3) 0.14 ppm (365 µg/m3)
1 Hour 0.25 ppm (655 µg/m3) 0.075 ppm (196 µg/m3)
Annual Arithmetic Mean NA 0.03 ppm (80 µg/m3)
Particulate Matter (PM10) 1, 3, 6 24-Hour 50 µg/m3 150 µg/m3 Annual Arithmetic Mean 20 µg/m3 NA
Fine Particulate Matter (PM 2.5) 3, 4, 6, 9 24-Hour NA 35 µg/m3 Annual Arithmetic Mean 12 µg/m3 9 µg/m3
Sulfates (SO4-2) 24 Hour 25 µg/m3 NA
Lead (Pb) 10, 11
30-Day Average 1.5 µg/m3 NA
Calendar Quarter NA 1.5 µg/m3
Rolling 3-Month Average NA 0.15 µg/m3
Hydrogen Sulfide (H2S) 1 Hour 0.03 ppm (42 µg/m3) NA
Vinyl Chloride (C2H3CI) 10 24 Hour 0.01 ppm (26 µg/m3) NA ppm = parts per million; µg/m3 = micrograms per cubic meter; mg/m 3 = milligrams per cubic meter; – = no information available. 1 California standards for O3, carbon monoxide (except Lake Tahoe), sulfur dioxide (1-hour and 24-hour), nitrogen dioxide, suspended particulate matter - PM10, and visibility reducing particles are values that are not to be exceeded. The standards for sulfates, Lake Tahoe carbon monoxide, lead, hydrogen sulfide, and vinyl chloride are not to be equaled or exceeded. If the standard is for a 1-hour, 8-hour or 24 -hour average (i.e. all standards except for lead and the PM 10 annual standard), then some measurements may be excluded. Measurements are excluded that CARB determines would occur less than once per year on the average. The Lake Tahoe carbon monoxide standard is 6.0 ppm, a level one-half the national standard and two -thirds the State standard. 2 National standards shown are the "primary standards" designed to protect public health. National standards other than for O 3, particulates and those based on annual averages are not to be exceeded more than once a year. The 1 -hour O3 standard is attained if, during the most recent three -year period, the average number of days per year with maximum hourly concentrations above the standard is equal to or less than one. The 8 -hour O3 standard is attained when the 3 -year average of the 4 th highest daily concentrations is 0.070 ppm or less. The 24- hour PM 10 standard is attained when the 3 -year average of the 99 th percentile of monitored concentrations is less than 150 µg/m 3. The 24-hour PM2.5 standard is attained when the 3-year average of 98th percentiles is less than 35 µg/m3.
3 Except for the national particulate standards, annual standards are met if the annual average falls below the standard at eve ry site.
The national annual particulate standard for PM 10 is met if the 3-year average falls below the standard at every site. The annual PM 2.5 standard is met if the 3-year average of annual averages spatially-averaged across officially designed clusters of sites falls below the standard.
4 On October 1, 2015, the national 8- hour O3 primary and secondary standards were lowered from 0.075 to 0.070 ppm. An area will meet the standard if the fourth -highest maximum daily 8 -hour O3 concentration per year, averaged over three years, is equal to or less than 0.070 ppm. U.S. EPA will make recommendations on attainment designations by October 1, 2016, and issue final designations October 1, 2017. Nonattainment areas will have until 2020 to late 2037 to meet the health standard, with attainment dates varying based on the O
3 level in the area.
5 The national 1-hour O3 standard was revoked by the U.S. EPA on June 15, 2005. 6 In June 2002, CARB established new annual standards for PM 2.5 and PM10. 7 The 8-hour California O3 standard was approved by the CARB on April 28, 2005 and became effective on May 17, 2006. 8 On June 2, 2010, the U.S. EPA established a new 1-hour SO2 standard, effective August 23, 2010, which is based on the 3-year average of the annual 99 th percentile of 1 -hour daily maximum concentrations. The existing 0.030 ppm annual and 0.14 ppm 24 -hour SO2 NAAQS however must continue to be used until one year following U.S. EPA initial designations of the new 1 -hour SO2 NAAQS. 9 In February 2024, U.S. EPA strengthened the annual PM 2.5 NAAQS from 12.0 to 9.0 μg/m 3. Areas designated “unclassifiable/attainment” must continue to take steps to prevent their air quality from deteriorating to unhealthy levels. The effective date of this standard is May 6, 2024 .
10 CARB has identified lead and vinyl chloride as ‘toxic air contaminants’ with no threshold level of exposure below which there are no adverse health effects determined.
11 National lead standard, rolling 3-month average: final rule signed October 15, 2008. Final designations effective December 31, 2011.
Source: South Coast Air Quality Management District, Air Quality Management Plan, 2022; California Air Resources Board, Ambient Air Quality Standards, May 6, 2016, and U.S. Environmental Protection Agency, NAAQS Tables , 2024, available at: https://www.epa.gov/criteria- air- pollutants/naaqs-table
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3.3 Regional
South Coast Air Quality Management District
The SCAQMD is the air pollution control agency for Orange County and the urban portions of Los Angeles, Riverside, and San Bernardino Counties. The agency’s primary responsibility is ensuring that state and federal ambient air quality standards are attained and maintained in the SCAB. The SCAQMD is also responsible for adopting and enforcing rules and regulations concerning air pollutant sources, issuing permits for stationary sources of air pollutants, inspecting stationary sources of air pollutants, responding to citizen complaints, monitoring ambient air quality and meteorological conditions, awarding grants to reduce motor vehicle emissions, conducting publ ic education campaigns, and many other activities. All projects are subject to SCAQMD rules and regulations in effect at the time of construction.
The SCAQMD is also the lead agency in charge of developing each AQMP, with input from the Southern California Association of Governments (SCAG) and CARB. The AQMP is a comprehensive plan that includes control strategies to reduce emissions from stationary and area sources, as well as for on-road and off-road mobile sources. SCAG has the primary responsibility for providing future growth projections and the development and implementation of transportation control measures.
CARB, in coordination with federal agencies, has jurisdiction over mobile sources.
The 2016 AQMP was adopted by the SCAQMD Governing Board on March 3, 2017. 12 The purpose of
the 2016 AQMP is to set forth a comprehensive and integrated program that would lead the SCAB into compliance with those NAAQS for which the basin is in nonattainment (i.e., the federal 24-hour PM2.5 air quality standard), and to provide an update to the SCAQMD ’s commitments towards meeting the federal 8 -hour O 3 standards. The 2016 AQMP incorporated the latest scientific and technological information and planning assumptions, including the 2016- 2040 Regional Transportation Plan/Sustainable Communities Strategy (RTP/SCS) and updated emission inventory methodologies for various source categories.13
On October 1, 2015, the U.S. EPA strengthened the NAAQS for ground -level O 3. The 2022 AQMP, adopted by the SCAQMD Governing Board on December 2, 2022, was developed to address the strengthened requirements for meeting the 2015 ground-level 8-hour O 3 standard.14 The 2022 AQMP
builds upon measures already in place from previous AQMPs. It also includes a variety of additional strategies such as regulation, accelerated deployment of available cleaner technologies (e.g., zero emissions technologies, when cost -effective and feasible, and low NO X technologies in other
applications), best management practices, co -benefits from existing programs (e.g., climate and energy efficiency), incentives, and other FCAA measures to achieve the 2015 8-hour ozone standard.
Like earlier AQMPs, the 2022 AQMP incorporates the latest scientific and technological information and planning assumptions, including the 2020- 2045 RTP/SCS and updated emission inventory
12 South Coast Air Quality Management District, Final 2016 Air Quality Management Plan , March 2017. https://www.aqmd.gov/docs/default -source/clean-air-plans/air-quality-management-plans/2016-air-quality-management- plan/final-2016-aqmp/final2016aqmp.pdf?sfvrsn=15 , accessed November 2024 13 Southern California Association of Governments, The 2016-2040 Regional Transportation Plan/Sustainable Communities Strategy, April 2016. https://scag.ca.gov/sites/main/files/file -attachments/f2016rtpscs.pdf?1606005557, accessed November 2024 14 South Coast Air Quality Management District, 2022 Air Quality Management Plan , December 2022. https://www.aqmd.gov/docs/default -source/clean-air-plans/air-quality-management-plans/2022-air-quality-management- plan/final-2022-aqmp/final-2022-aqmp.pdf?sfvrsn=16, accessed November 2024 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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methodologies for various source categories.15
The SCAQMD has published the CEQA Air Quality Handbook (approved by the SCAQMD Governing Board in 1993 and augmented with guidance for Local Significance Thresholds [LST] in 2008). 16 The SCAQMD guidance helps local government agencies and consultants to develop environmental documents required by California Environmental Quality Act (CEQA) and suggests thresholds of significance for criteria pollutants for both construction and operation (see discussion of thresholds below). With the help of SCAQMD’s CEQA Air Quality Handbook and associated guidance, local land use planners and consultants are able to analyze and document how proposed and existing projects affect air quality in order to meet the requirements of the CEQA review process. The SCAQMD periodically provides supplemental guidance and updates to the handbook on their website.
The SCAG is the regional planning agency for Los Angeles, Orange, Ventura, Riverside, San Bernardino, and Imperial Counties and serves as a forum for regional issues relating to transportation, the economy, community development, and the environment. Under federal law, SCAG is designated as a Metropolitan Planning Organization and under State law as a Regional Transportation Planning Agency and a Council of Governments.
The state and federal attainment status designations for the SCAB are summarized in Table 5:
South
Coast Air Basin Attainment Status. The SCAB is currently designated as a non-attainment area with respect to the State O 3, PM 10, and PM 2.5 standards, as well as the national 8 -hour O 3 and PM 2.5 standards. The SCAB is designated as attainment or unclassified for the remaining state and federal standards.
Table 5: South Coast Air Basin Attainment Status
Pollutant State Federal
Ozone (O3)
(1 Hour Standard) Non-Attainment Non-Attainment (Extreme) Ozone (O3)
(8 Hour Standard) Non-Attainment Non-Attainment (Extreme) Particulate Matter (PM2.5)
(24 Hour Standard) – Non-Attainment (Serious)
Particulate Matter (PM2.5)
(Annual Standard) Non-Attainment Non-Attainment (Moderate) Particulate Matter (PM10)
(24 Hour Standard) Non-Attainment Attainment (Maintenance) Particulate Matter (PM10)
(Annual Standard) Non-Attainment –
Carbon Monoxide (CO)
(1 Hour Standard) Attainment Attainment (Maintenance)
Carbon Monoxide (CO)
(8 Hour Standard) Attainment Attainment (Maintenance)
Nitrogen Dioxide (NO2)
(1 Hour Standard) Attainment Unclassifiable/Attainment
Nitrogen Dioxide (NO2)
(Annual Standard) Attainment Attainment (Maintenance)
Sulfur Dioxide (SO2) Attainment Unclassifiable/Attainment
15 Southern California Association of Governments, Connect SoCal (2020 – 2045 Regional Transportation Plan/Sustainable Communities Strategy), September 2020. https://scag.ca.gov/read -plan-adopted-final-connect-socal-2020, accessed November 2024 16 South Coast Air Quality Management District, Final Localized Significance Threshold Methodology , July 2008. https://www.aqmd.gov/home/rules -compliance/ceqa/air-quality-analysis-handbook/localized-significance-thresholds, accessed November 2024
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Table 5: South Coast Air Basin Attainment Status
Pollutant State Federal
(1 Hour Standard)
Sulfur Dioxide (SO2)
(24 Hour Standard) Attainment –
Lead (Pb)
(30 Day Standard) – Unclassifiable/Attainment
Lead (Pb)
(3 Month Standard) Attainment Nonattainment (Partial)
Sulfates (SO4-2)
(24 Hour Standard) Attainment –
Hydrogen Sulfide (H2S)
(1 Hour Standard) Unclassified –
Source: South Coast Air Quality Management District, Air Quality Management Plan , 2022; U.S. Environmental Protection Agency, Nonattainment Areas for Criteria Pollutants (Green Book) , 2024.
The following is a list of SCAQMD rules with which construction activities associated with the Project must comply:
• Rule 401 (Visible Emissions) – A person shall not discharge into the atmosphere from any single source of emission whatsoever any air contaminant for a period or periods aggregating more than three minutes in any 1 hour that is dark or darker in shade as that designated No. 1 on the Ringelmann Chart, as published by the United States Bureau of Mines. • Rule 402 (Nuisance) – This rule prohibits the discharge from any source whatsoever such quantities of air contaminants or other material which cause injury, detriment, nuisance, or annoyance to any considerable number of persons or to the public, or which endanger the comfort, repose, health, or safety of any such persons or the public, or which cause, or have a natural tendency to cause, injury or damage to business or property. This rule does not apply to odors emanating from agricultural operations necessary for the growing or crops or the raising of fowl or animals.
• Rule 403 (Fugitive Dust) - This rule requires fugitive dust sources to implement best available control measures for all sources, and all forms of visible particulate matter are prohibited from crossing any property line. This rule is intended to reduce PM 10 emissions
from any transportation, handling, construction, or storage activity that has the potential to generate fugitive dust. PM
10 suppression techniques are summarized below.
a) Portions of a construction site to remain inactive longer than a period of three months will be seeded and watered until grass cover is grown or otherwise stabilized. b) All on -site roads are paved as soon as feasible, watered regularly, or chemically stabilized.
c) All material transported off-site will be either sufficiently watered or securely covered to prevent excessive amounts of dust.
d) The area disturbed by clearing, grading, earthmoving, or excavation operations will be minimized at all times.
e) Where vehicles leave a construction site and enter adjacent public streets, the streets will be swept daily or washed down following the work day to remove soil from PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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pavement.
• Rule 431.2 (Sulfur Content of Liquid Fuels) - This rule limits the sulfur content in diesel and other liquid fuels for the purpose of both reducing the formation of sulfur oxides and particulates during combustion and to enable the use of add -on control devices for diesel fueled internal combustion engines.
• Rule 1113 (Architectural Coatings) – This rule requires manufacturers, distributors, and end users of architectural and industrial maintenance coatings to reduce ROG emissions from the use of these coatings, primarily by placing limits on the ROG content of various coating categories.
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4.0 SIGNIFICANCE CRITERIA AND METHODOLOGY
4.1 Air Quality Thresholds
State CEQA Guidelines Appendix G
Based upon the criteria derived from CEQA Guidelines Appendix G, the City has determined that the Project normally would have a significant effect on the environment if it would:
• Conflict with or obstruct implementation of the applicable air quality plan. • Result in a cumulatively considerable net increase of any criteria pollutant for which the Project region is in nonattainment under an applicable state or federal ambient air quality standard.
• Expose sensitive receptors to substantial pollutant concentrations. • Result in other emissions (such as those leading to odors) adversely affecting a substantial number of people.
South Coast Air Quality Management District
Mass Emissions Thresholds
The significance criteria established by SCAQMD may be relied upon to make the above determinations. According to the CEQA Appendix G, an air quality impact is considered significant if the Project would violate any ambient air quality standard, contribute substantially to an existing or projected air quality violation, or expose sensitive receptors to substantial pollutant concentrations.
The SCAQMD has established thresholds of significance for criteria pollutant and precursor emissions during construction and operational activities of land use development projects, as shown in Table 6: South Coast Air Quality Management District Emissions Thresholds.
Table 6: South Coast Air Quality Management District Emissions Thresholds Criteria Air Pollutants and
Precursors
Daily Emissions (pounds/day)
Construction-Related Operational-Related
Reactive Organic Gases (ROG) 75 55
Carbon Monoxide (CO) 550 550
Nitrogen Oxides (NOX) 100 55
Sulfur Oxides (SOX) 150 150
Coarse Particulates (PM10) 150 150
Fine Particulates (PM2.5) 55 55
Source: South Coast Air Quality Management District, CEQA Air Quality Significance Thresholds, March 2023.
Localized Carbon Monoxide
In addition to the daily thresholds listed above, development associated with the Project would also be subject to the ambient air quality standards. These are addressed through an analysis of localized CO impacts known as the CO “hot spots” analysis. An analysis of CO “hot spots” determines whether the change in the level of service (LOS) of an intersection as a result of Project activities would have the potential to result in exceedances of the CAAQS or NAAQS. It has long been PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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recognized that one of the greatest contributors of CO to outdoor air is cars. 17 Vehicle emissions standards have become increasingly stringent in the last 20 years. Currently, the CO standard in California is a maximum of 3.4 grams per mile for passenger cars (requirements for certain vehicles are more stringent). 18 With the turnover of older vehicles, introduction of cleaner fuels, and implementation of control technology on industrial facilities, CO concentrations have steadily declined.
19, 20
Accordingly, with steadily decreasing CO emissions from vehicles, even very busy intersections do not result in exceedances of the CO standard. An analysis prepared for CO attainment in the SCAB by the SCAQMD is useful for current evaluations of the potential for CO exceedances. CO attainment was thoroughly analyzed as part of the SCAQMD’s 2003 Air Quality Management Plan. 21 Considering
the region’s unique meteorological conditions and the increasingly stringent CO emissions standards, CO modeling was performed as part of air quality management plans. The SCAB was re- designated as attainment (as reported in Table 21, above) in 2007 and CO is no longer addressed in the SCAQMD’s Air Quality Management Plan (AQMP).
The 2003 Air Quality Management Plan is the most recent AQMP that addressed CO concentrations.
As part of the 2003 AQMP CO Modeling Attainment Demonstration, an analysis was performed utilizing dispersion modeling.
22 The Wilshire Boulevard/Veteran Avenue intersection, one of the most congested intersections in Southern California with an average daily traffic (ADT) volume of approximately 100,000 vehicles per day, was modeled for CO concentrations. This modeling effort identified a CO concentration high of 4.6 parts per million (ppm), which is well below the 35 -ppm federal standard. As an initial screening step, if a project roadway segment does not exceed and ADT of 100,000 per day, then the project does not need to prepare a detailed CO hot spot analysis.
Localized Significance Thresholds
In addition to the CO hotspot analysis, the SCAQMD developed LSTs for emissions of NO 2, CO, PM10,
and PM2.5 generated at new development sites (off-site mobile source emissions are not included in the LST analysis). LSTs represent the maximum emissions that can be generated at a project site without expecting to cause or substantially contributing to an exceedance of the most stringent state or federal ambient air quality standards. LSTs are based on the ambient concentrations of that pollutant within the Project source receptor area (SRA), as demarcated by the SCAQMD, and the distance to the nearest sensitive receptor. LST analysis for construction is required for all projects that disturb 5 acres or less on a single day. The Project Site is located within SCAQMD SRA 23 (Metropolitan Riverside County ). Table 7:
Local Significance Thresholds for
17 U.S. Environmental Protection Agency, Basic Information about Carbon Monoxide (CO) Outdoor Air Pollution, 2023. https://www.epa.gov/co-pollution/basic-information-about-carbon-monoxide-co-outdoor-air- pollution#:~:text=The%20greatest%20sources%20of%20CO,can%20affect%20air%20quality%20indoors , accessed November 2024 18 California Code of Regulations Section 1961, Exhaust Emission Standards and Test Procedures – 2004 through 2019 Model Passenger Cars, Light -Duty Trucks, and Medium -Duty Vehicles, 2022. https://ww2.arb.ca.gov/sites/default/files/2023 - 02/cleancomplete_lev_ghg_regs_11_2022.pdf , accessed November 2024 19 South Coast Air Quality Management District, Carbon Monoxide Redesignation Request and Maintenance Plan, February 2005. https://ww2.arb.ca.gov/sites/default/files/classic/planning/sip/sccosip05/sccosip_redesig_mplan.pdf , accessed November 2024 20 U.S. Environmental Protection Agency, Carbon Monoxide Trends , 2023. https://www.epa.gov/air -trends/carbon-monoxide-trends, accessed November 2024
21 South Coast Air Quality Management District, Air Quality Management Plan, Appendix V, Modeling and Attainment Demonstrations , August 2003. https://www.aqmd.gov/home/air -quality/air-quality-management-plans/air-quality-mgt-plan/2003-aqmp, accessed November 2024
22 Ibid.
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Construction/Operations, sho ws the LSTs for 1 -acre, 2 -acre, and 5 -acre projects in SRA 1 with sensitive receptors located within 25 meters of the Project Site, which represents the closest distance for LSTs.
Table 7: Local Significance Thresholds for Construction/Operations Project Size Nitrogen Oxide
(NOx) – lbs/day
Carbon Monoxide
(CO) – lbs/day
Coarse
Particulates
(PM10) – lbs/day
Fine Particulates
(PM2.5) – lbs/day
1 Acre 118/118 602/602 4/1 3/1
2 Acres 170/170 883/883 7/2 4/1
5 Acres 270/270 1,577/1,577 13/4 8/2
Source: South Coast Air Quality Management District, Localized Significance Threshold Methodology, July 2008.
LSTs associated with all acreage categories are provided in Table 7 for informational purposes. Table 7 shows that the LSTs increase as acreages increase. It should be noted that LSTs are screening thresholds and are therefore conservative. The construction LST acreage is determined based daily acreage disturbed. The operational LST acreage is based on the total area of the Project Site.
4.2 Methodology
This air quality impact analysis considers construction and operational impacts associated with the Project. Where criteria air pollutant quantification was required, emissions were modeled using the California Emissions Estimator Model (CalEEMod) version 2022. CalEEMod is a Statewide land use emissions computer model designed to quantify potential criteria pollutant emissions associated with both construction and operations from a variety of land use projects. Air quality impacts were assessed according to methodologies recommended by CARB and the SCAQMD.
Construction equipment, trucks, worker vehicles, and ground -disturbing activities associated with Project construction would generate emissions of criteria air pollutants and precursors. Daily regional construction emissions are estimated by assuming construction occurs at the earliest feasible date (i.e., a conservative estimate of construction activities) and applying off-road, fugitive dust, and on-road emissions factors in CalEEMod.
Project operations would result in emissions of area sources (consumer products), energy sources (natural gas usage), and mobile sources (motor vehicles from Project generated vehicle trips).
Project-generated increases in operational emissions would be predominantly associated with motor vehicle use . The Project vehicle trip generation was obtained from the Project’s Traffic Analysis Scoping Form (approved October 21, 2024) . According to trip generation estimates, the Project would generate 3,654 net daily vehicle trips (accounting for trips generated by existing uses to be demolished and/or relocated within the RCHSP Area). Other operational emissions from area, energy, and stationary sources were quantified in CalEEMod based on land use activity data.
As discussed above, the SCAQMD provides significance thresholds for emissions associated with proposed Project construction and operations. The proposed Project’s construction and operational emissions are compared to the daily criteria pollutant emissions significance thresholds in order to determine the significance of a Project’s impact on regional air quality.
The localized effects from the Project’s on-site emissions for both construction and operations were PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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evaluated in accordance with the SCAQMD’s LST methodology, which uses on-site mass emissions rate look-up tables and Project -specific modeling. LSTs represent the maximum emissions from a project that are not expected to cause or contribute to an exceedance of the most stringent applicable federal or state ambient air quality standards and are developed based on the ambient concentrations of that pollutant for each source receptor area and distance to the nearest sensitive receptor.
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5.0 POTENTIAL IMPACTS AND MITIGATION
5.1 Air Quality Analysis
Threshold 5.1 Would the Project conflict with or obstruct implementation of the applicable air quality plan?
As part of its enforcement responsibilities, the U.S. EPA requires each state with nonattainment areas to prepare and submit a State Implementation Plan (SIP) that demonstrates the means to attain the federal standards. The SIP must integrate federal, state, and local plan components and regulations to identify specific measures to reduce pollution in nonattainment areas, using a combination of performance standards and market-based programs. Similarly, under State law, the California Ambient Air Quality Standards (CAAQS) require an air quality attainment plan to be prepared for areas designated as nonattainment regarding the state and federal ambient air quality standards. Air quality attainment plans outline emissions limits and control measures to achieve and maintain these standards by the earliest practical date.
The Project is located within the South Coast Air Basin (SCAB), which is under the jurisdiction of the SCAQMD. The SCAQMD is required, pursuant to the Federal Clean Air Act (FCAA), to reduce emissions of criteria pollutants for which the SCAB is in nonattainment. To reduce such emissions, the SCAQMD drafted the 2016 AQMP and 2022 AQMP. The 2016 AQMP establishes a program of rules and regulations directed at reducing air pollutant emissions and achieving state (California) and national air quality standards. The 2022 AQMP builds upon measures already in place from previous AQMPs.
23 The primary purpose of the 2022 AQMP is to identify, develop, and implement strategies and control measures to meet the 2015 8-hour ozone National Ambient Air Quality Standard (NAAQS). Air quality management planning is a regional and multi-agency effort including the SCAQMD, the CARB, the Southern California Association of Governments (SCAG), and the U.S. EPA. The AQMPs’ pollutant control strategies are based on the latest scientific and technical information and planning assumptions, including SCAG’s growth projections and the RTP/SCS, updated emission inventory methodologies for various source categories, and SCAG’s latest growth forecasts. SCAG’s latest growth forecasts were defined in consultation with local governments and with reference to local general plans. The Project is subject to the SCAQMD’s 2016 and 2022 AQMPs.
Criteria for determining consistency with the AQMPs are defined by the following indicators:
• Consistency Criterion No. 1 : The Project will not result in an increase in the frequency or severity of existing air quality violations, or cause or contribute to new violations, or delay the timely attainment of air quality standards or the interim emissions reductions specified in the AQMPs.
• Consistency Criterion No. 2: The Project will not exceed the assumptions in the AQMPs or increments based on the years of the Project build-out phase.
According to the SCAQMD’s CEQA Air Quality Handbook , the purpose of the consistency finding is to determine if a project is inconsistent with the assumptions and objectives of the regional air quality plans, and thus if it would interfere with the region’s ability to comply with CAAQS and
23 South Coast Air Quality Management District, 2022 Air Quality Management Plan, page ES -2, December 2022. http://www.aqmd.gov/home/air -quality/clean-air-plans/air-quality-mgt-plan, accessed November 2024 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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National Ambient Air Quality Standards (NAAQS).24
The violations to which Consistency Criterion No. 1 refers are exceedances of the CAAQS or NAAQS.
As shown below, the Project would not exceed the construction standards. Therefore, the Project would not result in an increase in frequency or severity of existing air quality violations, or cause or contribute to new violations, or delay the timely attainment of air quality standards or the interim emissions reductions specified in the AQMPs. With regards to operations, as concluded in the 2014 Final EIR, the parking structure would not generate additional operational emission because the proposed parking structure would support the on-site trip-generating uses. The trips associated with the RCHSP has been contemplated in the 2014 Final EIR. Thus, the Project would be consistent with the AQMP under the first criterion.
Concerning Consistency Criterion No. 2, the 2022 AQMP contains air pollutant reduction strategies based on SCAG’s growth forecasts in cluded in the 2020-2045 RTP/SCS. SCAG’s growth forecasts are made in consultation with local governments and with reference to their local general plans. The Project is consistent with the City of Riverside General Plan land use designations and with the RCHSP, therefore, the growth associated with the Project at the Project Site has been accounted for in SCAG’s latest growth forecasts. The 2020 –2045 RTP/SCS provides socioeconomic forecast projections of regional population growth. The population, housing, and employment forecasts, which are adopted by SCAG’s Regional Council, are based on the local plans and policies applicable to the specific area; these are used by SCAG in all phases of implementation and review. 25 Thus, the
Project would also be consistent with the AQMP under the second criterion.
As shown below, the air pollutant emissions resulting from Project implementation would not exceed the SCAQMD localized significance thresholds for construction. Localized significance thresholds were developed to ensure no exceedances of the California or federal ambient air quality standards would occur if project emissions were below thresholds. 26 As the Project would not
increase the frequency or severity of an existing air quality violation or cause or contribute to new violations for air quality pollutants (including VOC, NO X, CO, SOX, PM10, and PM2.5), the Project also would not delay timely attainment of air quality standards or interim emission reductions specified in the AQMP. In addition, the Project would be consistent with the population and employment growth projections in the AQMP.
Based on the above, approval of the Project would not result in any significant effects relating to a conflict with or obstruction of the implementation of the SCAQMD’s AQMP. Further, the proposed Project would be consistent with the land uses and density contemplated in the 2014 Final EIR. The 2014 Final EIR concluded that buildout of the RCHSP would not conflict with or obstruct implementation of the applicable air quality plan and impacts were determined to be less than significant. No new impacts relative to a conflict with an applicable air quality plan or a substantial increase in the severity of a previously identified impact evaluated in the 2014 Final EIR would occur.
Additionally, no new information of substantial importance that was not known and could not have been known at the time the 201 4 Final EIR was certified is available that wou ld impact the prior
24 South Coast Air Quality Management District, CEQA Air Quality Handbook , 1993. 25 Southern California Association of Governments, Connect SoCal (2020 –2045 RTP/SCS), adopted September 2020, https://scag.ca.gov/sites/main/files/file -attachments/0903fconnectsocal -plan_0.pdf?1606001176, accessed November 2024 26 South Coast Air Quality Management District, Localized Significance Thresholds, https://www.aqmd.gov/home/rules - compliance/ceqa/air-quality-analysis-handbook/localized-significance-thresholds, accessed November 2024 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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finding of no significant impact under this issue area. 2014 Final EIR Mitigation Measures: No mitigation is required.
Project Mitigation Measures: No mitigation is required.
Level of Significance: Less than significant impact.
Threshold 5.2 Would the Project result in a cumulatively considerable net increase of any criteria pollutant for which the Project region is non -attainment under an applicable state or federal ambient air quality standard? The nature of air emissions is largely a cumulative impact. As a result, no single project is sufficient in size to, by itself, result in nonattainment of ambient air quality standards. Instead, individual project emissions contribute to existing cumulatively significant adverse air quality impacts.
Appendix D of the SCAQMD White Paper on Potential Control Strategies to Address Cumulative Impacts from Air Pollution (2003) notes that projects that result in emissions that do not exceed the project-specific SCAQMD regional thresholds of significance are considered to result in a less than significant impact on a cumulative basis unless there is other pertinent information to the contrary. 27 Therefore, a project whose emissions would exceed SCAQMD thresholds would also make a cumulatively considerable contribution to a significant cumulative impact and, conversely, a project whose emissions would be below SCAQMD thresholds would not make a cumulatively considerable contribution to a significant cumulative impact.
Construction Emissions
Construction associated with the Project would generate short -term emissions of criteria air pollutants. The criteria pollutants of primary concern within the SCAB include ozone -precursor pollutants (i.e., ROG and NOX), PM10, and PM2.5. Construction-generated emissions of these criteria pollutants would be short -term and of temporary duration, lasting only as long as construction activities occur, but would be considered a significant air quality impact if the volume of pollutants generated were to exceed the SCAQMD’s thresholds of significance.
Project construction would result in the temporary generation of criteria pollutant emissions from all phases of construction, including demolition, site grading, building construction, and architectural coating, as well as from motor vehicle exhaust associated with construction equipment, materials deliveries and worker trips, and the movement of construction equipment, especially on unpaved surfaces. Emissions of airborne particulate matter are largely generated by motor vehicle exhaust and ground disturbance; the volume of airborne particulate matter is largely dependent on the amount of ground disturbance associated with site preparation activities, as well as weather conditions and the appropriate application of water.
Construction activities for the Project were assumed to begin in the second quarter of 2025.
Construction-generated emissions associated with the Project were calculated using the CARB - approved California Emissions Estimator Model (CalEEMod), version 2022, which is designed to
27 South Coast Air Quality Management District, White Paper on Potential Control Strategies to Address Cumulative Impacts from Air Pollution, August 2003. https://www.aqmd.gov/docs/default -source/Agendas/Environmental -Justice/cumulative-impacts-working- group/cumulative-impacts-white-paper-appendix.pdf, accessed November 2024 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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model emissions for land use development projects based on typical construction requirements. It was assumed that all construction equipment operated during each individual phase would be operated simultaneously, to provide a conservative analysis. See Appendix A: Air Quality Data for more information regarding the construction assumptions used in this analysis.
The predicted maximum daily construction-g enerated criteria pollutant emissions for the proposed Project are reported in Table 8: Project Construction Criteria Pollutant Emissions. As noted in Table 8, the Project’s emissions were calculated assuming mandatory compliance with SCAQMD Rule 403 (2014 Final EIR MM AQ-3), fugitive dust control measures, and 2014 Final EIR MM AQ-1 and MM AQ- 2, which require Tier 2 and Tier 4 or better, respectively, diesel engines for heavy -duty diesel - powered equipment.
Table 8: Project Construction Criteria Pollutant Emissions Construction Year Emissions (pounds per day)1, 2
ROG NOX CO SO2 PM10 PM2.5
Year 1 (2025) 1.18 10.32 31.87 0.05 3.79 1.60
Year 2 (2026) 0.69 5.06 15.58 0.03 1.48 0.39
SCAQMD Threshold 75 100 550 150 150 55
SCAQMD Threshold Exceeded? No No No No No No
1. Mandatory compliance with SCAQMD Rule 403 Fugitive Dust assumed. The Rule 403 reduction/credits include the following:
properly maintain mobile and other construction equipment; replace ground cover in disturbed areas quickly; water exposed surfaces three times daily; water all haul roads twice daily. Reductions percentages from the SCAQMD CEQA Handbook (Tables XI-A through XI-E) were applied.
2. Compliance with 2014 Final EIR MM AQ-2 requiring Tier 4 or better diesel engines for heavy -duty diesel-powered equipment.
Refer to Appendix A for Model Data Outputs.
Source: CalEEMod version 2022. Refer to Appendix A for model outputs.
The results summarized in Table 8 sho w that the Project’s regional criteria pollutant emissions during construction would remain below applicable thresholds.
Project construction would also comply with SCAQMD Rules 402 (Nuisance) 28 and 1113 (Architectural Coatings)29 and CARB’s anti-idling regulations, which prohibit idling for more than five minutes; however, compliance with these rules was not assumed when estimating the Project’s construction emissions for Table 8, above. Therefore, the Project’s maximum -d ay construction emissions of criteria pollutants would be even lower than reported in Table 8 w hen the Project’s compliance with SCAQMD Rules 402 and 1113 and CARB’s anti -idling regulations are taken into account.
As shown above, the Project’s estimated criteria pollutant emissions during construction would be b
elow their respective thresholds such that approval of the Project would not result in any significant project-level effects relating to regional construction air pollutant emissions. No new impacts or a substantial increase in the severity of a previously identified impact evaluated in the 2014 Final EIR would occur. Additionally, no new information of substantial importance that was not known and could not have been known at the time the 2014 Final EIR was certified is available that would impact the prior finding of no significant impact under this issue area.
28 SCAQMD Rule 402 prohibits the discharge of quantities of air contaminants or other material which cause injury, detriment, nuisance, or annoyance to any considerable number of people or to the public, or which endanger the comfort, repose, health or safety of any such persons or the public or have a natural tendency to cause injury or damage to business or property. 29 SCAQMD Rule 1113 sets limits on the VOC content of architectural coatings.
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Operational Emissions
The Project’s operational emissions would be associated with area sources (e.g., landscape maintenance equipment, architectural coatings, etc.) and energy sources. As concluded in the 2014 Final EIR, the parking structure would not generate additional operational emission because the proposed parking structures would support the on -site trip-generating uses. The trips associated with the RCHSP has been contemplated in the 2014 Final EIR. Primary sources of operational criteria pollutants would therefore be area and energy sources. Long -term operational emissions attributable to the Project are summarized in Table 9: Operational Criteria Pollutant Emissions. The operational emissions sources are described below.
• Area Source Emissions . A rea source emissions would be generated due to on- site equipment, architectural coating, and landscape maintenance equipment. • Energy Source Emissions . E nergy source emissions would be generated due to electricity usage associated with the Project. Primary energy uses include ventilation, lighting, and elevators.
• Mobile Source Emissions.
As concluded in the 2014 Final EIR, the parking structure would not generate additional operational emission because the proposed parking structure would support the on- site trip-generating uses. Therefore, mobile emissions associated with the proposed parking garage is zero.
• Stationary Source Emission s.
The proposed parking garage would include a n emergency generator and a fire pump . Stationary equipment would not be part of the Project’s normal daily operations. Nonetheless, emissions associated one emergency backup generator and one fire pump was included to be conservative. Emissions were calculated separately form CalEEMod. However, CalEEMod default emissions rates were used.
Table 9: Operational Criteria Pollutant Emissions
Source Emissions (pounds per day)1, 2
ROG NOX CO SO2 PM10 PM2.5
Area 1.50 0.08 9.04 <0.10 0.02 0.01
Energy -- -- -- -- -- --
Mobile -- -- -- -- -- --
Stationary 1.00 2.79 2.55 <0.01 0.15 0.15
Proposed Project Total 2.50 2.87 11.59 <0.10 0.17 0.16
SCAQMD Threshold 55 55 550 150 150 55
SCAQMD Threshold Exceeded? No No No No No No
Worst-case seasonal maximum daily emissions are reported.
Source: CalEEMod version 2022. Refer to Appendix A for model outputs.
As shown in Table 9, and discussed above, operational (i.e., area, energy, st ationary) emissions would not exceed SCAQMD thresholds for any criteria pollutant. Therefore, the Project would not violate any air quality standards or contribute substantially to an existing or projected air quality violation. As a result, approval of the Project would not result in any significant project-level effects relating to operational air quality impacts.
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Cumulative Impacts
The nature of air emissions is largely a cumulative impact. As a result, no single project is sufficient in size to, by itself, result in nonattainment of ambient air quality standards. Instead, individual project emissions contribute to existing cumulatively significant adverse air quality impacts. The SCAQMD developed the construction and operational thresholds of significance based on the level above which individual project emissions would result in a cumulatively considerable contribution to SCAB’s existing air quality conditions. In addition, Appendix D of the SCAQMD White Paper on Potential Control Strategies to Address Cumulative Impacts from Air Pollution (2003) notes that projects that result in emissions that do not exceed the project -specific SCAQMD regional thresholds of significance are considered to result in a less than significant impact on a cumulative basis unless there is other pertinent information to the contrary. 30 Therefore, a project whose
emissions would exceed SCAQMD thresholds would also make a cumulatively considerable contribution to a significant cumulative impact and, conversely, a project whose emissions would be below SCAQMD thresholds would not make a cumulatively considerable contribution to a significant cumulative impact.
Cumulative Construction Impacts
The SCAB is designated nonattainment for O
3, PM 10, and PM 2.5 under the State standards and
nonattainment for O 3 and PM 2.5 under the federal standards. As discussed above, the Project’s construction-related emissions, by themselves, would not exceed the SCAQMD significance thresholds for criteria pollutants. As discussed above, if a project is estimated to result in emissions that do not exceed SCAQMD thresholds, the project’s contribution to the cumulative impact on air quality in the SCAB would not be considered to be cumulatively considerable. 31 As shown in Table 8
above, Project construction- related emissions would not exceed the SCAQMD significance thresholds for any of the criteria pollutants. Therefore, the Project would not generate a cumulatively considerable contribution to air pollutant emissions during construction.
The SCAQMD has developed strategies to reduce criteria pollutant emissions as outlined in the A
QMP pursuant to the federal Clean Air Act mandates. The analysis assumed fugitive dust controls would be used during construction, including frequent water applications. SCAQMD rules, mandates, and compliance with adopted AQMP emissions control measures would also be imposed on construction projects throughout SCAB, which would include the related projects. As concluded above, the Project’s construction-related impacts would be less than significant, and its compliance with SCAQMD rules and regulations would further minimize the proposed Project’s construction-related emissions. Therefore, Project-related construction emissions, in combination with those from other, related projects in the area, would not substantially deteriorate the local air quality. The Project’s construction- related emissions would not result in a cumulatively considerable contribution to significant cumulative air quality impacts.
Cumulative Operational Impacts
As discussed above, projects that would result in operational emissions that do not individually
30 South Coast Air Quality Management District, White Paper on Potential Control Strategies to Address Cumulative Impacts from Air Pollution, August 2003. https://www.aqmd.gov/docs/default -source/Agendas/Environmental -Justice/cumulative-impacts-working- group/cumulative-impacts-white-paper-appendix.pdf, accessed November 2024 31 Ibid.
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exceed SCAQMD regional thresholds of significance are not considered to make a cumulatively considerable contribution to a significant cumulative impact on air quality in the SCAB. Table 9 shows that the Project’s operational emissions would not exceed the SCAQMD thresholds. As a result, operational emissions associated with the Project would not make a cumulatively considerable contribution to significant cumulative air quality impacts. Therefore, cumulative operational impacts would be less than significant.
Conclusion
The 2014 Final EIR concluded that implementation of Phase IIb of the RCHSP would not result in a cumulatively considerable net increase of any criteria pollutant and that less than significant impacts would result. No new impacts or a substantial increase in the severity of a previously identified impact evaluated in the 2014 Final EIR would occur. Additionally, no new information of substantial importance that was not known and could not have been known at the time the 2014 Final EIR was certified is available that would impact the prior finding of no significant impact under this issue area.
2014 Final EIR Mitigation Measures:
MM AQ-1 The following measures shall be adhered to during project grading and construction to reduce oxides of nitrogen (NO,) from construction equipment for all phases of the project:
a. Heavy-duty diesel-powered construction equipment rated at greater than 50 horsepower shall be equipped with Tier 2 or better diesel engines. b. The engine size of construction equipment shall be the minimum size. c. The number of construction equipment operating simultaneously shall be minimized through efficient management practices to ensure that the smallest number is operating at any one time.
d. Construction equipment shall be maintained in tune per the manufacturer' s specifications.
e. Catalytic converters shall be installed on gasoline -powered equipment over 50 horsepower.
f. Electric equipment shall be utilized in lieu of diesel- powered equipment, where feasible.
MM AQ-2 During the environmental review process for future discretionary permits for Phase IIC of the Riverside Community Hospital Expansion Project, an air quality technical report that includes project construction phasing, timing and operational details shall be analyzed using the current air quality model available from the South Coast Air Quality Management District ( SCAQMD).
Project emissions shall be modeled and then evaluated based on current SCAQMD thresholds. The technical analysis for Phase IIC shall be prepared to analyze construction and operational emissions.
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If air quality impacts are determined to be significant, feasible and appropriate project -specific mitigation measures shall be incorporated to reduce impacts. Examples of standard construction mitigation measures include the following:
Consistent with SCAQMD Rule 403, it is required that fugitive dust generated by grading and construction activities be kept to a minimum with a goal of retaining dust on the site, by following the dust control measures listed below:
a. During clearing, grading, earthmoving, excavation, or transportation of cut or fill materials, water trucks or sprinkler systems shall be used to prevent dust from leaving the site and to create a crust after each day' s activities cease.
b. During construction, water trucks or sprinkler systems shall be used to keep all areas of vehicle movement damp enough to prevent dust from leaving the site. At a minimum, this would include wetting down such areas later in the morning, after work is completed for the day, and whenever winds exceed 15 miles per hour.
c. Soil stockpiled for more than 2 days shall be covered, kept moist, or treated with soil binders to prevent dust generation.
d. Speeds on unpaved roads shall be reduced to less than 15 miles per hour. e. All grading and excavation operations shall be halted when wind speeds exceed 25 miles per hour.
f. Dirt and debris spilled onto paved surfaces at the project site and on the adjacent roadways shall be swept, vacuumed, and/ or washed at the end of each workday.
g. If import/export of soil materials would be required, all trucks hauling dirt, sand, soil, or other loose material to and from the construction site shall be covered and/ or a minimum 2 feet of freeboard shall be maintained. h. At a minimum, at each vehicle egress from the project site to a paved public road, a pad consisting of washed gravel (minimum size: 1 inch) shall be installed and maintained in clean condition to a depth of at least 6 inches and extending at least 30 feet wide and at least 50 feet long (or as otherwise directed by the SCAQMD).
i. Any additional requirements of SCAQMD Rule 403 shall be reviewed and complied with.
The following measures shall be adhered to during project grading and construction to reduce emissions of volatile organic compounds (VOC) and oxides of nitrogen (NO,) from construction equipment:
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a. Heavy-duty diesel-powered construction equipment rated at greater than 50 horsepower shall be equipped with Tier 4 or better diesel engines. b. The engine size of construction equipment shall be the minimum size. c. The amount of construction equipment operating simultaneously shall be minimized through efficient management practices to ensure that the smallest amount of equipment is operating at any one time. d. Construction equipment shall be maintained in tune per the manufacturer' s specifications.
e. Catalytic converters shall be installed on gasoline -powered equipment over 50 horsepower.
f. Electric equipment shall be utilized in lieu of diesel- powered equipment, where feasible.
g. RCH shall use zero- VOC-content architectural coatings during project construction/application of paints and other architectural coatings to reduce ozone precursors. If zero- VOC paint cannot be utilized, the developer shall avoid application of architectural coatings during the peak smog season: July, August, and September. RCH shall procure architectural coatings from a supplier in compliance with the requirements of SCAQMD' s Rule 1113 Architectural Coatings).
If air quality impacts for operational emissions for Phase IIC are determined to be significant, feasible and appropriate project -specific mitigation measures shall be incorporated to reduce impacts. Examples of standard operational mitigation measures include the following: reduce trips in passenger vehicles by patients, visitors, or physicians/ staff, enhance transportation management demand programs; and reduce energy usage.
Project Mitigation Measures: No mitigation is required.
Level of Significance: Less than significant impact.
Threshold 5.3 Would the Project expose sensitive receptors to substantial pollutant concentrations?
Localized Construction Significance Analysis
The nearest sensitive receptor to the Project Site is Grant Elementary School located approximately 75 feet to the north of the Project Site. To assess the potential for Project construction to create impacts to sensitive receptors, the SCAQMD recommends utilizing its Localized Significance Thresholds (LSTs) for construction. The LSTs were developed in response to the SCAQMD Governing Boards' Environmental Justice Enhancement Initiative (I -4) and are based on the ambient concentrations of that pollutant for each source receptor area and distance to the nearest sensitive receptor. LSTs represent the maximum emissions from a project that are not expected to cause or PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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contribute to an exceedance of the state or federal ambient air quality standard (the more stringent of the two).32 The SCAQMD provided the Final Localized Significance Threshold Methodology (dated June 2003 [revised 2008]) for guidance.33 The LST methodology assists lead agencies in their project- specific analysis of the potential localized impacts associated with proposed projects.
Since CalEEMod calculates construction emissions based on the number of equipment hours and the maximum daily soil disturbance activity possible for each piece of equipment, Table 10 :
Equipment-Specific Grading Rates was used to determine the maximum daily disturbed acreage for the LST analysis.34 For this Project, the appropriate source receptor area (SRA) for the LSTs is the SRA 23, since this area includes the Project Site. LSTs only take into consideration emissions of NOX, CO, PM10, and PM2.5.35 The SCAQMD produced look-up tables for projects that disturb areas less than or equal to 5 acres in size.36 Based on the daily equipment modeled in CalEEMod, Project construction is anticipated to disturb approximately 1.5 acre in a single day. Thus, the LSTs applicable to this Project uses the SCAQMD-produced look up tables for a 1.5-acre site.
Table 10: Equipment-Specific Grading Rates
Construction
Phase Equipment Type Equipment
Quantity
Acres
Graded per
8-Hour Day
Operating
Hours per
Day
Acres
Graded per
Day
Grading
Tractor/Backhoe 1 0.5 8 0.5
Dozer 1 0.5 8 0.5
Grader 1 0.5 8 0.5
Total Acres Graded per Day 1.5
Source: CalEEMod version 2022
The SCAQMD’s methodology states that “off -site mobile emissions from the Project should not be included in the emissions compared to LSTs.” 37 Therefore, for purposes of the construction LST analysis, only the emissions included in the CalEEMod “on- site” emissions outputs were considered. LST thresholds are provided for distances to sensitive receptors of 25, 50, 100, 200, and 500 meters. SCAQMD’s LST guidance recommends using the 25 -meter threshold for receptors located 25 meters (or approximately 82 feet) or less from the Project Site. 38 Therefore, the LSTs for
1.5 acre at 25 meters were used for the construction analysis, which is consistent with the SCAQMD LST methodology.
Table 11: Localized Significance of Construction Emissions p resents the emissions modeling results
32 South Coast Air Quality Management District, Localized Significance Thresholds , https://www.aqmd.gov/home/rules - compliance/ceqa/air-quality-analysis-handbook/localized-significance-thresholds, accessed November 2024 33 South Coast Air Quality Management District, Final Localized Significance Threshold Methodology , Revised 2008, http://www.aqmd.gov/home/rules -compliance/ceqa/air -quality-analysis-handbook/localized-significance-thresholds, accessed November 2024
34 South Coast Air Quality Management District, Sample Construction Scenarios for Projects Less than Five Acres in Size , February 2005. https://www.aqmd.gov/docs/default -source/ceqa/handbook/localized -significance-thresholds/final-sample-construction-scenario- report.pdf?sfvrsn=2, accessed November 2024
35 South Coast Air Quality Management District, Final Localized Significance Threshold Methodology , Revised 2008, http://www.aqmd.gov/home/rules -compliance/ceqa/air -quality-analysis-handbook/localized-significance-thresholds, accessed November 2024
36 South Coast Air Quality Management District, Final Localized Significance Threshold Methodology, Appendix C – Mass Rate LST Look- up Tables , Revised 2008, http://www.aqmd.gov/home/rules -compliance/ceqa/air-quality-analysis-handbook/localized-significance- thresholds, accessed November 2024
37 South Coast Air Quality Management District, Final Localized Significance Threshold Methodology , Revised 2008, http://www.aqmd.gov/home/rules -compliance/ceqa/air -quality-analysis-handbook/localized-significance-thresholds, accessed November 2024
38 Ibid
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for the Project’s localized emissions during construction. As stated above, compliance with SCAQMD Rules 402 and 1113 and CARB anti-idling regulations were not assumed when estimating the Project’s localized construction emissions for Table 11. Therefore, the Project’s maximum-d ay localized construction emissions would actually be even lower than reported in Table 11 . Table 11 shows that the emissions of these pollutants on the peak day of construction would not exceed the LSTs and therefore would not be expected to create substantial concentrations of pollutants at the sensitive receptors closest to the Project Site or cause or contribute to an exceedance of federal or state ambient air quality standards. Therefore, approval of the Project would not result in any significant effects relating to localized construction air pollutant concentrations.
Table 11: Localized Significance of Construction Emissions Source/Activity Emissions (pounds per day)1,2, 3
NOX CO PM10 PM2.5
Demolition 2.27 14.56 2.97 0.49
Site Preparation 1.01 11.88 2.48 1.21
Grading 1.20 14.24 2.81 1.38
Infrastructure Improvements 3.54 10.47 0.03 0.03
Building Construction 3.54 10.47 0.03 0.03
Paving 0.99 6.65 0.02 0.02
Architectural Coating 0.65 0.96 <0.01 <0.01
Infrastructure Improvements + Building
Construction 7.08 20.94 0.06 0.06
Paving + Architectural Coating 1.64 7.61 0.02 0.02
Maximum Daily Emissions 7.08 20.94 2.97 1.38
SCAQMD LST (for 1.5 acre at 25 meters) 144 743 6 4
Maximum Daily Emissions Exceed
SCAQMD Threshold? No No No No
1. Worst-case seasonal maximum daily emissions are reported.
2. Mandatory compliance with SCAQMD Rule 403 Fugitive Dust applied for construction emissions. The Rule 403 reduction/credits include the following: properly maintain mobile and other construction equipment; replace ground cover in disturbed areas quickly; water exposed surfaces three times daily; water all haul roads twice daily. Reductions percentages from the SCAQMD CEQA Handbook (Tables XI -A through XI-E) were applied.
3. Compliance with 2014 Final EIR MM AQ -2 requiring Tier 4 or better diesel engines for heavy -duty diesel -powered equipment.
Source: CalEEMod version 2022. Refer to Appendix A for model outputs.
Localized Operational Significance Analysis
According to the SCAQMD localized significance threshold methodology, operational LSTs apply only to on- site sources. 39 LSTs for receptors located at 25 meters for SRA 23 were utilized in this analysis. The 1. 0-acre LST threshold was conservatively used for the Project Site. 40 The on- site operational emissions were calculated using CalEEMod and are compared to the LST thresholds in Table 12: Localized Significance of Operational Emissions.
39 Ibid.
40 Construction LST analysis is based on the amount of daily ground disturbance, which was calculated to be 1.5 acre. For operations, the size of the Project Site has been used.
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Table 12: Localized Significance of Operational Emissions Activity Emissions (pounds per day)1, 2
NOX CO PM10 PM2.5
On-Site Emissions
(Area, Energy, Stationary Sources) 2.87 11.59 0.17 0.16 SCAQMD Localized Screening Threshold
(1.0 acre at 25 meters) 118 602 1 1
Exceed SCAQMD Threshold? No No No No
1. As recommended by the SCAQMD. Worst -case seasonal maximum daily emissions are reported.
2. On-site emissions consist of area sources and energy sources.
Source: CalEEMod version 2022. Refer to Appendix A for model outputs.
The operational emissions shown on Table 12 i nclude all on -site Project-related sources (i.e., area and energy). On-site operational sources include stationary sources and/or on- site mobile equipment and off-site mobile emissions should not be included. 41 The results of the LST analysis show that the Project would not cause or contribute to an exceedance of federal or state ambient air quality standards. Therefore, approval of the Project would not result in any significant effects relating to operational air pollutant concentrations.
Criteria Pollutant Health Impacts
On December 24, 2018, the California Supreme Court issued an opinion identifying the need to provide sufficient information connecting a project’s significant air emissions to health impacts or explain why such information could not be ascertained ( Sierra Club v. County of Fresno [Friant Ranch, L.P.] [2018] Cal.5th, Case No. S219783).
The SCAQMD has set its CEQA significance thresholds based on the FCAA, which defines a major stationary source (in extreme ozone nonattainment areas such as the SCAB) as emitting 10 tons per year. The thresholds correlate with the trigger levels for the fe deral New Source Review (NSR) Program and SCAQMD Rule 1303 for new or modified sources. The NSR Program 42 was created by the FCAA to ensure that stationary sources of air pollution are constructed or modified in a manner that is consistent with attainment of health-based federal ambient air quality standards. The federal ambient air quality standards establish the levels of air pollutant emissions necessary, with an adequate margin of safety, to protect the public health. Therefore, Projects that do not exceed the SCAQMD’s LSTs and mass emissions thresholds would not violate any air quality standards or contribute substantially to an existing or projected air quality violation and no criteria pollutant health impacts.
As previously discussed, localized effects of on- site Project emissions on nearby receptors were found to be less than significant (refer to Table 11 and Table 12). The LSTs represent the maximum emissions from a Project that are not expected to cause or contribute to an exceedance of the most stringent applicable state or federal ambient air quality standard. The LSTs were developed by the SCAQMD based on the ambient concentrations of that pollutant for each SRA and distance to the nearest sensitive receptor. The ambient air quality standards establish the levels of air pollutant emissions necessary, with an adequate margin of safety, to protect public health, incl uding
41 South Coast Air Quality Management District, Final Localized Significance Threshold Methodology , Revised 2008, http://www.aqmd.gov/home/rules -compliance/ceqa/air -quality-analysis-handbook/localized-significance-thresholds, accessed November 2024
42 Code of Federal Regulation (CFR) [i.e., PSD (40 CFR 52.21, 40 CFR 51.166, 40 CFR 51.165 (b)), Non -attainment NSR (40 CFR 52.24, 40 CFR 51.165, 40 CFR part 51, Appendix S)
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protecting the health of sensitive populations. Information on health impacts related to exposure to ozone and particulate matter emissions published by the U.S. EPA and CARB have been summarized above and discussed in the Regulatory Setting section. As shown above, Project -related emissions would not exceed the regional thresholds or the LSTs, and therefore would not exceed the ambient air quality standards or cause an increase in the frequency or severity of existing violations of air quality standards. Therefore, sensitive receptors would not be exposed to criteria pollutant levels in excess of the health-based ambient air quality standards.
Carbon Monoxide Hotspots
As discussed above, projects that would not produce traffic volumes resulting in more than 100,000 daily vehicles along project area roadway segments would not require preparation of a detailed CO hot spot analysis. The Project would support on-site uses and would not generate vehicle trips. Trips generated by the RCHSP have been contemplated in the 2014 Final EIR and no future study is required. Therefore, the Project would not result in any significant effects relating to CO concentrations.
Conclusion
The 2014 Final EIR concluded that implementation of the RCHSP would not expose sensitive receptors to substantial pollutant concentrations and that less than significant impacts would result. No new impacts or a substantial increase in the severity of a previously identified impact evaluated in the 2014 Final EIR would occur. Additionally, no new information of substantial importance that was not known and could not have been known at the tim e the 2014 Final EIR was certified is available that would impact the prior finding of no significant impact under this issue area. 2014 Final EIR Mitigation Measures:
MM AQ-3 During construction of all phases of the project, the following mitigation measures shall be incorporated to reduce impacts resulting from the exceedance of the South Coast Air Management District (SCAQMD) localized significance thresholds.
Consistent with SCAQMD Rule 403, it is required that fugitive dust generated by grading and construction activities be kept to a minimum with a goal of retaining dust on the site, by following the dust control measures listed below:
a. During clearing, grading, earthmoving, excavation, or transportation of cut or fill materials, water trucks or sprinkler systems shall be used to prevent dust from leaving the site and to create a crust after each day's activities cease.
b. During construction, water trucks or sprinkler systems shall be used to keep all areas of vehicle movement damp enough to prevent dust from leaving the site. At a minimum, this would include wetting down such areas later in the morning, after work is completed for the day, and whenever winds exceed 15 miles per hour.
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c. Soil stockpiled for more than 2 days shall be covered, kept moist, or treated with soil binders to prevent dust generation.
d. Speeds on unpaved roads shall be reduced to less than 15 miles per hour.
e. All grading and excavation operations shall be halted when wind speeds exceed 25 miles per hour.
f. Dirt and debris spilled onto paved surfaces at the project site and on the adjacent roadways shall be swept, vacuumed, and /or washed at the end of each workday.
g. If import /export of soil materials would be required, all trucks hauling dirt, sand, soil, or other loose material to and from the construction site shall be covered, and /or a minimum 2 feet of freeboard shall be maintained.
h. At a minimum, at each vehicle egress from the project site to a paved public road, a pad consisting of washed gravel ( minimum size: 1 inch) shall be installed and maintained in clean condition to a depth of at least 6 inches and extending at least 30 feet wide and at least 50 feet long ( or as otherwise directed by SCAQMD).
i. Any additional requirements of SCAQMD Rule 403 shall be reviewed and complied with.
j. The construction contractor or Riverside Community Hospital representative shall notify sensitive receptors when building demolition and grading activities would occur so that sensitive residents could be kept indoors or other accommodations made for their comfort. The construction contractor shall post readily visible signage in publicly accessible areas along the property lines of the Riverside Community Hospital with a contact name and telephone number in the event that project construction would generate nuisance levels of air pollutants in the surrounding community. Action shall be taken within 4 hours after notification to determine the cause of the objectionable emissions and take corrective action.
The following measures shall be adhered to during project grading and construction to reduce emissions of oxides of nitrogen (NOx) from construction equipment:
a. Heavy-duty diesel-powered construction equipment rated at greater than 50 horsepower shall be equipped with Tier 3 or better diesel engines. b. The engine size of construction equipment shall be the minimum size. c. The amount of construction equipment operating simultaneously shall PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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be minimized through efficient management practices to ensure that the smallest amount of equipment is operating at any one time. d. Construction equipment shall be maintained in tune per the manufacturer's specifications.
e. Catalytic converters shall be installed on gasoline -powered equipment over 50 horsepower.
f. Electric equipment shall be utilized in lieu of diesel-powered equipment, where feasible.
Project Mitigation Measures: No mitigation is required.
Level of Significance: Less than significant impact.
Threshold 5.4 Would the Project result in other emissions (such as those leading to odors) adversely affecting a substantial number of people?
Construction
Odors that could be generated by construction activities are required to follow SCAQMD Rule 402 to prevent odor nuisances on sensitive land uses. SCAQMD Rule 402, Nuisance, states:
A person shall not discharge from any source whatsoever such quantities of air contaminants or other material which cause injury, detriment, nuisance, or annoyance to any considerable number of persons or to the public, or which endanger the comfort, repose, health or safety of any such persons or the public, or which cause, or have a natural tendency to cause, injury or damage to business or property.
During construction, emissions from construction equipment, such as diesel exhaust, and from volatile organic compounds contained in architectural coatings and paving activities may generate odors. However, these odors would be temporary, are not expected to affect a substantial number of people and would disperse rapidly.
Operational
The SCAQMD CEQA Air Quality Handbook identifies certain land uses as sources of odors. These land uses include agriculture (farming and livestock), wastewater treatment plants, food processing plants, chemical plants, composting facilities, refineries, landfills, dairies, and fiberglass mold ing.
The Project proposes the construction of a parking garage which would not involve the types of uses that would emit objectionable odors affecting substantial numbers of people. The Project would not include any of the land uses that have been identified by the SCAQMD as significant odor sources.
Therefore, the Project would not result in any significant effects relating to other air emissions affecting substantial numbers of people.
Conclusion
The 2014 Final EIR concluded that implementation of the Specific Plan would not create PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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objectionable odors affecting a substantial number of people and that less than significant impacts would result. No new impacts or a substantial increase in the severity of a previously identified impact evaluated in the 2014 Final EIR would occur. Additionally, no new information of substantial importance that was not known and could not have been known at the time the 2014 Final EIR was certified is available that would impact the prior finding of no significant impact under this issue area. 2014 Final EIR Mitigation Measures: No mitigation is required.
Mitigation Measures: No mitigation is required.
Level of Significance: Less than significant impact.
5.2 Cumulative Impacts
Cumulative Setting
The cumulative setting for air quality includes the City of Riverside and the SCAB. The SCAB is designated as a nonattainment area for state standards of ozone, PM 10, and PM 2.5. For federal standards, the SCAB is designated as a partial nonattainment area for lead and nonattainment for ozone and PM2.5, attainment and serious maintenance for federal PM 10 standards, and unclassified or attainment for all other pollutants. Cumulative growth in population and vehicle use could inhibit efforts to improve regional air quality and attain the ambient air quality standards. However, as a result of plans and regulations, air quality in the SCAB has improved over time despite population growth and increased in vehicle usage.
Cumulative Impacts
The SCAQMD’s approach to assessing cumulative impacts is based on the AQMP forecasts of attainment of ambient air quality standards in accordance with requirements of the FCAA and CCAA and analysis of project -level impacts.
43 For the reasons discussed above, the Project would be consistent with the AQMP, which is intended to bring SCAB into attainment for all criteria pollutants.
Additionally, since the Project’s estimated construction and operational emissions would not exceed the applicable SCAQMD daily significance thresholds that are designed to assist the region in attaining both NAAQS and CAAQS, cumulative impacts would be less than significant.
Mitigation Measures: No mitigation is required.
Level of Significance: Less than significant impact.
43 South Coast Air Quality Management District, White Paper on Potential Control Strategies to Address Cumulative Impacts from Air Pollution, August 2003. https://www.aqmd.gov/docs/default -source/Agendas/Environmental -Justice/cumulative-impacts-working- group/cumulative-impacts-white-paper-appendix.pdf, accessed November 2024 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Air Quality Assessment
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6.0 REFERENCES
1. California Air Resources Board, Almanac Resources, 2024. Available at:
https://ww2.arb.ca.gov/resources/documents/almanac-resources, accessed November 2024
2. California Air Resources Board, Ambient Air Quality Standards, May 6, 2016
3. California Air Resources Board, California Ambient Air Quality Standards, https://ww2.arb.ca.gov/resources/california-ambient-air-quality-standards, accessed November 2024
4. California Air Resources Board, Common Air Pollutants, 2024. Available at:
https://ww2.arb.ca.gov/resources/common-air-pollutants, accessed November 2024
5. California Air Resources Board, Overview: Diesel Exhaust & Health, https://ww2.arb.ca.gov/resources/overview-diesel-exhaust-and-health, accessed November 2024
6. California Code of Regulations Section 1961, Exhaust Emission Standards and Test Procedures – 2004 through 2019 Model Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles, 2022. https://ww2.arb.ca.gov/sites/default/files/2023-
02/cleancomplete_lev_ghg_regs_11_2022.pdf, accessed November 2024
7. Dudek, Draft Environmental Impact Report for the Riverside Community Hospital Expansion Project, February 2014
8. South Coast Air Quality Management District, Air Quality Management Plan, 2022
9. South Coast Air Quality Management District, Carbon Monoxide Redesignation Request and Maintenance Plan, February 2005.
https://ww2.arb.ca.gov/sites/default/files/classic/planning/sip/sccosip05/sccosip_redesig_m plan.pdf, accessed November 2024
10. South Coast Air Quality Management District, CEQA Air Quality Handbook, 1993
11. South Coast Air Quality Management District, Final 2016 Air Quality Management Plan, March 2017
12. South Coast Air Quality Management District, Final Localized Significance Threshold Methodology, Appendix C – Mass Rate LST Look-up Tables, Revised 2008, http://www.aqmd.gov/home/rules-compliance/ceqa/air-quality-analysis-handbook/localized- significance-thresholds, accessed November 2024
13. South Coast Air Quality Management District, Final Localized Significance Threshold Methodology, Revised 2008, http://www.aqmd.gov/home/rules-compliance/ceqa/air-quality- analysis-handbook/localized-significance-thresholds, accessed November 2024
14. South Coast Air Quality Management District, Localized Significance Thresholds, https://www.aqmd.gov/home/rules-compliance/ceqa/air-quality-analysis- handbook/localized-significance-thresholds, accessed November 2024
15. South Coast Air Quality Management District, Sample Construction Scenarios for Projects Less than Five Acres in Size, February 2005. https://www.aqmd.gov/docs/default- source/ceqa/handbook/localized-significance-thresholds/final-sample-construction- scenario-report.pdf?sfvrsn=2, accessed November 2024
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16. South Coast Air Quality Management District, White Paper on Potential Control Strategies to Address Cumulative Impacts from Air Pollution, August 2003. https://www.aqmd.gov/docs/default-source/Agendas/Environmental-Justice/cumulative- impacts-working-group/cumulative-impacts-white-paper-appendix.pdf, accessed November 2024
17. Southern California Association of Governments, Connect SoCal (2020 – 2045 Regional Transportation Plan/Sustainable Communities Strategy), September 2020. https://scag.ca.gov/read-plan-adopted-final-connect-socal-2020, accessed November 2024
18. Southern California Association of Governments, The 2016-2040 Regional Transportation Plan/Sustainable Communities Strategy, April 2016. https://scag.ca.gov/sites/main/files/file- attachments/f2016rtpscs.pdf?1606005557, accessed November 2024
19. U.S. Environmental Protection Agency, Basic Information about Carbon Monoxide (CO) Outdoor Air Pollution, 2023. https://www.epa.gov/co-pollution/basic-information-about- carbon-monoxide-co-outdoor-air-
pollution#:~:text=The%20greatest%20sources%20of%20CO,can%20affect%20air%20quality %20indoors, accessed November 2024
20. U.S. Environmental Protection Agency, Carbon Monoxide Trends, 2023. https://www.epa.gov/air-trends/carbon-monoxide-trends, accessed November 2024
21. U.S. Environmental Protection Agency, Criteria Air Pollutants, https://www.epa.gov/criteria-air- pollutants, accessed November 2024
22. U.S. Environmental Protection Agency, NAAQS Tables, 2024
23. U.S. Environmental Protection Agency, Nonattainment Areas for Criteria Pollutants (Green Book), 2024
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices
Appendix A
Air Quality Modeling Data
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Riverside Community Hospital Brockton Parking Garage
CalEEMod Assumptions
Land Use
Land Use Size Metric
Unenclosed Parking with Elevator 166,224 SF
Enclosed Parking with Elevator 41,556 SF
Off-Site Improvements 0.1 AC
KSF = thousand square feet; DU = dwelling unit
Construction
Schedule
Phase Name Start Date End Date Workdays
Demolition 4/1/2025 6/1/2025 44
Site Preparation 6/2/2025 6/29/2025 20
Grading 6/30/2025 9/28/2025 65
Infrastructure Improvements 10/1/2025 12/31/2025 66
Building Construction 9/29/2025 2/15/2026 100
Paving 2/16/2026 6/28/2026 95
Architectural Coating 2/16/2026 7/31/2026 120
Equipment
Construction
Phase Equipment
Number per
Day
Hours Per
Day
Engine Tier
Demolition
Tractors/Loaders/Backhoes 3 8 Tier 4 Final
Rubber Tired Dozers 1 8 Tier 4 Final
Concrete/Industrial Saws 1 8 Tier 4 Final
Site Preparation
Graders 1 8 Tier 4 Final
Rubber Tired Dozers 1 8 Tier 4 Final
Tractors/Loaders/Backhoes 2 7 Tier 4 Final
Grading
Graders 1 8 Tier 4 Final
Rubber Tired Dozers 1 8 Tier 4 Final
Tractors/Loaders/Backhoes 2 7 Tier 4 Final
Infrastructure
Improvement
Cranes 1 6 Tier 4 Final
Forklifts 1 6 Tier 4 Final
Generator Sets 1 8 Tier 4 Final
Tractors/Loaders/Backhoes 1 6 Tier 4 Final
Welders 3 8 Tier 4 Final
Building
Construction
Cranes 1 6 Tier 4 Final
Forklifts 1 6 Tier 4 Final
Generator Sets 1 8 Tier 4 Final
Tractors/Loaders/Backhoes 1 6 Tier 4 Final
Welders 3 8 Tier 4 Final
Paving
Cement and Mortar Mixers 1 6 Tier 4 Final
Pavers 1 6 Tier 4 Final
Paving Equipment 1 8 Tier 4 Final
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Riverside Community Hospital Brockton Parking Garage CalEEMod Assumptions
2 Construction
Phase Equipment
Number per
Day
Hours Per
Day
Engine Tier
Rollers 1 7 Tier 4 Final
Tractors/Loaders/Backhoes 1 8 Tier 4 Final
Architectural
Coating Air Compressors 1 6 Tier 4 Final
Grading/Earthwork
Phase Import (CY) Export (CY) Haul Distance (mi)
Site Preparation -- -- --
Grading -- 15,000 20
CY = cubic yards; mi = miles
Worker, Vendor, and Haul Trips
Trip Type # One-Way Trips/Day Trip Length (miles)
Demolition
Worker 13 18.5
Vendor 0 10.2
Hauling 34 20
On-Site Truck 0 0
Site Preparation
Worker 8 18.5
Vendor 0 10.2
Hauling 0 20
On-Site Truck 0 0
Grading
Worker 10 18.5
Vendor 0 10.2
Hauling 29 20
On-Site Truck 0 0
Infrastructure Improvements
Worker 87 18.5
Vendor 34 10.2
Hauling 0 20
On-Site Truck 0 0
Building Construction
Worker 87 18.5
Vendor 34 10.2
Hauling 0 20
On-Site Truck 0 0
Paving
Worker 13 18.5
Vendor 0 10.2
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices Riverside Community Hospital Brockton Parking Garage CalEEMod Assumptions
3 Trip Type # One-Way Trips/Day Trip Length (miles)
Hauling 0 20
On-Site Truck 0 0
Architectural Coating
Worker 35 18.5
Vendor 0 10.2
Hauling 0 20
On-Site Truck 0 0
Demolition
Phase Amount (CY)
Building
Building Area (SF) 61,500
Waste Volume (CF) 153,750
Waste Volume (CY) 5,694
Building Waste Volume (tons) 2,847
Pavement
Pavement Area (SF) 87,120
Pavement Thickness (ft) 0.5
Pavement Volume (CF) 43,560
Pavement Density (lbs/CF) 145
Pavement Waste (lbs) 6,316,200
Pavement Waste (tons) 3,158
TOTAL DEMOLITION WASTE (tons) 6,005
CY = cubic yards
Operations
Vehicle Data
Land Use Size Metric Trip Rate Daily Trip
Generation
Unenclosed Parking with Elevator 166,224 SF 0 0
Enclosed Parking with Elevator 41,556 SF 0 0
Off-Site Improvements 0.1 AC 0 0
Total Daily Trips - - - 0
KSF = thousand square feet; DU = dwelling unit
Stationary Sources
Equipment Type Fuel Type # Hours/
Day
Hours/
Year HP Load
Factor
Emergency Generators Diesel 1 1 50 300 0.74
Fire Pumps Diesel 1 1 50 300 0.74
HP = horsepower
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RCH Parking Garage Detailed Report
Table of Contents
1. Basic Project Information
1.1. Basic Project Information
1.2. Land Use Types
1.3. User-Selected Emission Reduction Measures by Emissions Sector
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
2.2. Construction Emissions by Y ear, Unmitigated
2.4. Operations Emissions Compared Against Thresholds
2.5. Operations Emissions by Sector, Unmitigated
3. Construction Emissions Details
3.1. Demolition (2025) - Unmitigated
3.3. Site Preparation (2025) - Unmitigated
3.5. Grading (2025) - Unmitigated
3.7. Infrastructure Improvement (2025) - Unmitigated
3.9. Building Construction (2025) - Unmitigated
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3.11. Building Construction (2026) - Unmitigated
3.13. Paving (2026) - Unmitigated
3.15. Architectural Coating (2026) - Unmitigated
4. Operations Emissions Details
4.1. Mobile Emissions by Land Use
4.1.1. Unmitigated
4.2. Energy
4.2.1. Electricity Emissions By Land Use - Unmitigated
4.2.3. Natural Gas Emissions By Land Use - Unmitigated
4.3. Area Emissions by Source
4.3.1. Unmitigated
4.4. Water Emissions by Land Use
4.4.1. Unmitigated
4.5. Waste Emissions by Land Use
4.5.1. Unmitigated
4.6. Refrigerant Emissions by Land Use
4.6.1. Unmitigated
4.7. Offroad Emissions By Equipment Type
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4.7.1. Unmitigated
4.8. Stationary Emissions By Equipment Type
4.8.1. Unmitigated
4.9. User Defined Emissions By Equipment Type
4.9.1. Unmitigated
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
5. Activity Data
5.1. Construction Schedule
5.2. Off-Road Equipment
5.2.1. Unmitigated
5.3. Construction Vehicles
5.3.1. Unmitigated
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
5.5. Architectural Coatings
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5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
5.6.2. Construction Earthmoving Control Strategies
5.7. Construction Paving
5.8. Construction Electricity Consumption and Emissions Factors
5.9. Operational Mobile Sources
5.9.1. Unmitigated
5.10. Operational Area Sources
5.10.1. Hearths
5.10.1.1. Unmitigated
5.10.2. Architectural Coatings
5.10.3. Landscape Equipment
5.11. Operational Energy Consumption
5.11.1. Unmitigated
5.12. Operational Water and Wastewater Consumption
5.12.1. Unmitigated
5.13. Operational Waste Generation
5.13.1. Unmitigated
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5.14. Operational Refrigeration and Air Conditioning Equipment
5.14.1. Unmitigated
5.15. Operational Off-Road Equipment
5.15.1. Unmitigated
5.16. Stationary Sources
5.16.1. Emergency Generators and Fire Pumps
5.16.2. Process Boilers
5.17. User Defined
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.2. Sequestration
5.18.2.1. Unmitigated
6. Climate Risk Detailed Report
6.1. Climate Risk Summary
6.2. Initial Climate Risk Scores
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6.3. Adjusted Climate Risk Scores
6.4. Climate Risk Reduction Measures
7. Health and Equity Details
7.1. CalEnviroScreen 4.0 Scores
7.2. Healthy Places Index Scores
7.3. Overall Health & Equity Scores
7.4. Health & Equity Measures
7.5. Evaluation Scorecard
7.6. Health & Equity Custom Measures
8. User Changes to Default Data
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1. Basic Project Information
1.1. Basic Project Information
Data Field Value
Project Name RCH Parking Garage
Construction Start Date 4/1/2025
Operational Y ear 2026
Lead Agency —
Land Use Scale Project/site
Analysis Level for Defaults County
Windspeed (m/s) 2.20
Precipitation (days) 6.80
Location 4445 Magnolia Ave, Riverside, CA 92501, USA
County Riverside-South Coast
City Riverside
Air District South Coast AQMD
Air Basin South Coast
TAZ 5405
EDFZ 11
Electric Utility City of Riverside
Gas Utility Southern California Gas
App Version 2022.1.1.29
1.2. Land Use Types
Land Use Subtype Size Unit Lot Acreage Building Area (sq ft) Landscape Area (sq ft)
Special Landscape
Area
(sq ft)
Population Description
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——0.0015,632166,2241.76Space480Unenclosed
P
arking with
Elevator
Enclosed Parking
with
Elevator
118 Space 0.00 41,556 0.00 0.00 — —
1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit. TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.72 0.69 5.07 17.6 0.04 0.09 3.70 3.79 0.09 1.51 1.60 — 5,022 5,022 0.15 0.40 7.48 5,150 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 1.32 1.18 10.3 31.9 0.05 0.09 2.86 2.96 0.09 0.70 0.79 — 7,949 7,949 0.30 0.43 0.39 8,086 Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.36 0.32 3.20 11.3 0.02 0.05 1.71 1.76 0.05 0.54 0.59 — 2,992 2,992 0.10 0.19 1.84 3,052 Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.07 0.06 0.58 2.05 < 0.005 0.01 0.31 0.32 0.01 0.10 0.11 — 495 495 0.02 0.03 0.31 505
2.2. Construction Emissions by Y ear, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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Y ear TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily -
Summer
(Max)
— — — — — — — — — — — — — — — — — —
2025 0.72 0.61 5.07 17.6 0.04 0.09 3.70 3.79 0.09 1.51 1.60 — 5,022 5,022 0.15 0.40 7.48 5,150 2026 0.72 0.69 1.82 11.0 0.01 0.02 0.62 0.64 0.02 0.15 0.17 — 1,779 1,779 0.07 0.03 2.21 1,792 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — — —
2025 1.32 1.18 10.3 31.9 0.05 0.09 2.86 2.96 0.09 0.70 0.79 — 7,949 7,949 0.30 0.43 0.39 8,086 2026 0.71 0.68 5.06 15.6 0.03 0.05 1.43 1.48 0.05 0.35 0.39 — 3,933 3,933 0.11 0.22 0.18 4,001 Average
Daily
— — — — — — — — — — — — — — — — — —
2025 0.36 0.32 3.20 11.3 0.02 0.05 1.71 1.76 0.05 0.54 0.59 — 2,992 2,992 0.10 0.19 1.84 3,052 2026 0.27 0.26 1.00 4.31 0.01 0.01 0.32 0.33 0.01 0.08 0.09 — 846 846 0.03 0.03 0.56 856 Annual — — — — — — — — — — — — — — — — — —
2025 0.07 0.06 0.58 2.05 < 0.005 0.01 0.31 0.32 0.01 0.10 0.11 — 495 495 0.02 0.03 0.31 505 2026 0.05 0.05 0.18 0.79 < 0.005 < 0.005 0.06 0.06 < 0.005 0.01 0.02 — 140 140 < 0.005 < 0.005 0.09 142
2.4. Operations Emissions Compared Against Thresholds
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit. TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 1.62 1.50 0.08 9.04 < 0.005 0.02 0.00 0.02 0.01 0.00 0.01 0.00 1,528 1,528 0.06 0.01 0.00 1,531 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.02 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1,491 1,491 0.06 0.01 0.00 1,494 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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——————————————————Average
Daily
(Max)
Unmit. 1.12 1.03 0.05 6.19 < 0.005 0.01 0.00 0.01 0.01 0.00 0.01 0.00 1,516 1,516 0.06 0.01 0.00 1,520 Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.20 0.19 0.01 1.13 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 0.00 251 251 0.01 < 0.005 0.00 252
2.5. Operations Emissions by Sector, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 1.62 1.50 0.08 9.04 < 0.005 0.02 — 0.02 0.01 — 0.01 — 37.2 37.2 < 0.005 < 0.005 — 37.3 Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 1,488 1,488 0.06 0.01 — 1,491 Water — — — — — — — — — — — 0.00 3.15 3.15 < 0.005 < 0.005 — 3.15 Waste — — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00 Total 1.62 1.50 0.08 9.04 < 0.005 0.02 0.00 0.02 0.01 0.00 0.01 0.00 1,528 1,528 0.06 0.01 0.00 1,531 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 0.02 0.02 — — — — — — — — — — — — — — — —
Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 1,488 1,488 0.06 0.01 — 1,491 Water — — — — — — — — — — — 0.00 3.15 3.15 < 0.005 < 0.005 — 3.15 Waste — — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00 Total 0.02 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1,491 1,491 0.06 0.01 0.00 1,494 Average
Daily
— — — — — — — — — — — — — — — — — —
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 1.12 1.03 0.05 6.19 < 0.005 0.01 — 0.01 0.01 — 0.01 — 25.5 25.5 < 0.005 < 0.005 — 25.5 Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 1,488 1,488 0.06 0.01 — 1,491 Water — — — — — — — — — — — 0.00 3.15 3.15 < 0.005 < 0.005 — 3.15 Waste — — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00 Total 1.12 1.03 0.05 6.19 < 0.005 0.01 0.00 0.01 0.01 0.00 0.01 0.00 1,516 1,516 0.06 0.01 0.00 1,520 Annual — — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 0.20 0.19 0.01 1.13 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.21 4.21 < 0.005 < 0.005 — 4.23 Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 246 246 0.01 < 0.005 — 247 Water — — — — — — — — — — — 0.00 0.52 0.52 < 0.005 < 0.005 — 0.52 Waste — — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00 Total 0.20 0.19 0.01 1.13 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 0.00 251 251 0.01 < 0.005 0.00 252
3. Construction Emissions Details
3.1. Demolition (2025) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.25 0.25 2.27 14.6 0.02 0.05 — 0.05 0.05 — 0.05 — 2,494 2,494 0.10 0.02 — 2,502 Demoliti
on
— — — — — — 2.92 2.92 — 0.44 0.44 — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.03 0.03 0.27 1.75 < 0.005 0.01 — 0.01 0.01 — 0.01 — 301 301 0.01 < 0.005 — 302 Demoliti
on
— — — — — — 0.35 0.35 — 0.05 0.05 — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.01 0.01 0.05 0.32 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 49.8 49.8 < 0.005 < 0.005 — 49.9 Demoliti
on
— — — — — — 0.06 0.06 — 0.01 0.01 — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.07 0.06 0.05 0.97 0.00 0.00 0.16 0.16 0.00 0.04 0.04 — 176 176 0.01 0.01 0.65 179 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.10 0.04 2.61 0.64 0.02 0.05 0.62 0.66 0.05 0.17 0.22 — 2,352 2,352 0.04 0.37 5.02 2,469 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 — 19.8 19.8 < 0.005 < 0.005 0.03 20.1 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.01 < 0.005 0.33 0.08 < 0.005 0.01 0.07 0.08 0.01 0.02 0.03 — 284 284 0.01 0.04 0.26 297 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 3.27 3.27 < 0.005 < 0.005 0.01 3.32 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 0.06 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 47.0 47.0 < 0.005 0.01 0.04 49.2
3.3. Site Preparation (2025) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.19 0.19 1.01 11.9 0.02 0.04 — 0.04 0.04 — 0.04 — 2,065 2,065 0.08 0.02 — 2,072 Dust
F
rom
Material
Movement
— — — — — — 2.44 2.44 — 1.17 1.17 — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.01 0.01 0.06 0.65 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 113 113 < 0.005 < 0.005 — 114 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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———————0.060.06—0.130.13——————Dust
From
Mater
ial
Movement
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
< 0.005 < 0.005 0.01 0.12 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 18.7 18.7 < 0.005 < 0.005 — 18.8 Dust
F
rom
Material
Movement
— — — — — — 0.02 0.02 — 0.01 0.01 — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.04 0.03 0.03 0.58 0.00 0.00 0.10 0.10 0.00 0.02 0.02 — 106 106 < 0.005 < 0.005 0.39 107 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.03 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 5.39 5.39 < 0.005 < 0.005 0.01 5.47 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 0.89 0.89 < 0.005 < 0.005 < 0.005 0.91 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00
3.5. Grading (2025) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.23 0.23 1.20 14.2 0.02 0.05 — 0.05 0.05 — 0.05 — 2,455 2,455 0.10 0.02 — 2,463 Dust
F
rom
Material
Movement
— — — — — — 2.77 2.77 — 1.34 1.34 — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.04 0.04 0.21 2.54 < 0.005 0.01 — 0.01 0.01 — 0.01 — 437 437 0.02 < 0.005 — 439 Dust
F
rom
Material
Movement
— — — — — — 0.49 0.49 — 0.24 0.24 — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.01 0.01 0.04 0.46 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 72.4 72.4 < 0.005 < 0.005 — 72.6 Dust
F
rom
Material
Movement
— — — — — — 0.09 0.09 — 0.04 0.04 — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.05 0.04 0.04 0.77 0.00 0.00 0.13 0.13 0.00 0.03 0.03 — 141 141 0.01 < 0.005 0.52 143 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.08 0.03 2.20 0.54 0.01 0.04 0.52 0.56 0.04 0.15 0.18 — 1,988 1,988 0.04 0.31 4.24 2,086 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.11 0.00 0.00 0.02 0.02 0.00 0.01 0.01 — 23.4 23.4 < 0.005 < 0.005 0.04 23.7 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.01 0.01 0.41 0.10 < 0.005 0.01 0.09 0.10 0.01 0.03 0.03 — 354 354 0.01 0.06 0.32 371 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 3.87 3.87 < 0.005 < 0.005 0.01 3.92 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 0.08 0.02 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 — 58.6 58.6 < 0.005 0.01 0.05 61.5
3.7. Infrastructure Improvement (2025) - Unmitigated
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.20 0.20 3.54 10.5 0.02 0.03 — 0.03 0.03 — 0.03 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.04 0.04 0.64 1.89 < 0.005 0.01 — 0.01 0.01 — 0.01 — 326 326 0.01 < 0.005 — 327 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.01 0.01 0.12 0.35 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 53.9 53.9 < 0.005 < 0.005 — 54.1 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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——————————————————Daily,
Winter
(Max)
Worker 0.41 0.37 0.42 5.09 0.00 0.00 1.14 1.14 0.00 0.27 0.27 — 1,131 1,131 0.05 0.04 0.12 1,145 Vendor 0.05 0.02 1.20 0.37 0.01 0.02 0.29 0.31 0.02 0.08 0.10 — 1,043 1,043 0.02 0.16 0.08 1,090 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.07 0.07 0.08 0.97 0.00 0.00 0.21 0.21 0.00 0.05 0.05 — 207 207 0.01 0.01 0.35 210 Vendor 0.01 < 0.005 0.22 0.07 < 0.005 < 0.005 0.05 0.06 < 0.005 0.01 0.02 — 188 188 < 0.005 0.03 0.23 197 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.02 0.18 0.00 0.00 0.04 0.04 0.00 0.01 0.01 — 34.3 34.3 < 0.005 < 0.005 0.06 34.8 Vendor < 0.005 < 0.005 0.04 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 31.2 31.2 < 0.005 < 0.005 0.04 32.7 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00
3.9. Building Construction (2025) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.20 0.20 3.54 10.5 0.02 0.03 — 0.03 0.03 — 0.03 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
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Off-Roa
Equipment
0.20 0.20 3.54 10.5 0.02 0.03 — 0.03 0.03 — 0.03 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.04 0.04 0.65 1.93 < 0.005 0.01 — 0.01 0.01 — 0.01 — 331 331 0.01 < 0.005 — 332 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.01 0.01 0.12 0.35 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 54.9 54.9 < 0.005 < 0.005 — 55.0 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.47 0.39 0.38 6.74 0.00 0.00 1.14 1.14 0.00 0.27 0.27 — 1,230 1,230 0.05 0.04 4.52 1,249 Vendor 0.05 0.02 1.14 0.36 0.01 0.02 0.29 0.31 0.02 0.08 0.10 — 1,042 1,042 0.02 0.16 2.96 1,093 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.41 0.37 0.42 5.09 0.00 0.00 1.14 1.14 0.00 0.27 0.27 — 1,131 1,131 0.05 0.04 0.12 1,145 Vendor 0.05 0.02 1.20 0.37 0.01 0.02 0.29 0.31 0.02 0.08 0.10 — 1,043 1,043 0.02 0.16 0.08 1,090 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
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Worker 0.08 0.07 0.08 0.99 0.00 0.00 0.21 0.21 0.00 0.05 0.05 — 211 211 0.01 0.01 0.36 214 Vendor 0.01 < 0.005 0.22 0.07 < 0.005 < 0.005 0.05 0.06 < 0.005 0.01 0.02 — 192 192 < 0.005 0.03 0.24 201 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.02 0.18 0.00 0.00 0.04 0.04 0.00 0.01 0.01 — 34.9 34.9 < 0.005 < 0.005 0.06 35.4 Vendor < 0.005 < 0.005 0.04 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 31.7 31.7 < 0.005 < 0.005 0.04 33.2 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00
3.11. Building Construction (2026) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.20 0.20 3.54 10.5 0.02 0.03 — 0.03 0.03 — 0.03 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.02 0.02 0.32 0.94 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 162 162 0.01 < 0.005 — 163 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
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Off-Roa
Equipment
< 0.005 < 0.005 0.06 0.17 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 26.8 26.8 < 0.005 < 0.005 — 26.9 Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.39 0.35 0.38 4.75 0.00 0.00 1.14 1.14 0.00 0.27 0.27 — 1,107 1,107 0.02 0.04 0.11 1,120 Vendor 0.05 0.02 1.14 0.35 0.01 0.02 0.29 0.31 0.02 0.08 0.10 — 1,026 1,026 0.02 0.16 0.07 1,074 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.04 0.03 0.04 0.45 0.00 0.00 0.10 0.10 0.00 0.02 0.02 — 101 101 < 0.005 < 0.005 0.16 102 Vendor < 0.005 < 0.005 0.10 0.03 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 — 92.3 92.3 < 0.005 0.01 0.11 96.7 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.08 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 — 16.7 16.7 < 0.005 < 0.005 0.03 16.9 Vendor < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 — 15.3 15.3 < 0.005 < 0.005 0.02 16.0 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00
3.13. Paving (2026) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
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Off-Roa
Equipment
0.10 0.10 0.99 6.65 0.01 0.02 — 0.02 0.02 — 0.02 — 991 991 0.04 0.01 — 995 Paving 0.05 0.05 — — — — — — — — — — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.10 0.10 0.99 6.65 0.01 0.02 — 0.02 0.02 — 0.02 — 991 991 0.04 0.01 — 995 Paving 0.05 0.05 — — — — — — — — — — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.03 0.03 0.26 1.73 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 258 258 0.01 < 0.005 — 259 Paving 0.01 0.01 — — — — — — — — — — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
< 0.005 < 0.005 0.05 0.32 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 42.7 42.7 < 0.005 < 0.005 — 42.9 Paving < 0.005 < 0.005 — — — — — — — — — — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
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——————————————————Daily,
Summer
(Max)
Worker 0.06 0.05 0.05 0.90 0.00 0.00 0.16 0.16 0.00 0.04 0.04 — 172 172 0.01 0.01 0.58 175 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.05 0.05 0.68 0.00 0.00 0.16 0.16 0.00 0.04 0.04 — 159 159 < 0.005 0.01 0.02 160 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.02 0.19 0.00 0.00 0.04 0.04 0.00 0.01 0.01 — 41.8 41.8 < 0.005 < 0.005 0.07 42.3 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.03 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 6.92 6.92 < 0.005 < 0.005 0.01 7.01 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00
3.15. Architectural Coating (2026) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
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134—< 0.0050.01134134—< 0.005—< 0.005< 0.005—< 0.005< 0.0050.960.650.020.02Off-Roa d
Equipm
Architect
ur
al
Coating
s
0.33 0.33 — — — — — — — — — — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.02 0.02 0.65 0.96 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 134 134 0.01 < 0.005 — 134 Architect
ur
al
Coating
s
0.33 0.33 — — — — — — — — — — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
0.01 0.01 0.21 0.32 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 43.9 43.9 < 0.005 < 0.005 — 44.0 Architect
ur
al
Coating
s
0.11 0.11 — — — — — — — — — — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
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7.29—< 0.005< 0.0057.277.27—< 0.005—< 0.005< 0.005—< 0.005< 0.0050.060.04< 0.005< 0.005Off-Roa d
Equipm
ent
Architect
ur
al
Coating
s
0.02 0.02 — — — — — — — — — — — — — — — —
Onsite
tr
uck
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.16 0.15 0.14 2.51 0.00 0.00 0.46 0.46 0.00 0.11 0.11 — 481 481 0.02 0.02 1.63 488 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.16 0.14 0.15 1.90 0.00 0.00 0.46 0.46 0.00 0.11 0.11 — 443 443 0.01 0.02 0.04 448 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.05 0.05 0.05 0.65 0.00 0.00 0.15 0.15 0.00 0.03 0.03 — 147 147 < 0.005 0.01 0.23 149 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.12 0.00 0.00 0.03 0.03 0.00 0.01 0.01 — 24.4 24.4 < 0.005 < 0.005 0.04 24.7 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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4. Operations Emissions Details
4.1. Mobile Emissions by Land Use
4.1.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Enclose
d
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Enclose
d
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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Annual — — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Enclose
d
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00
4.2. Energy
4.2.1. Electricity Emissions By Land Use - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
— — — — — — — — — — — — 1,121 1,121 0.04 0.01 — 1,123
Enclose
d
P
arking
with
Elevator
— — — — — — — — — — — — 367 367 0.01 < 0.005 — 368
Total — — — — — — — — — — — — 1,488 1,488 0.06 0.01 — 1,491 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
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Unenclo
P
arking
with
Elevator
— — — — — — — — — — — — 1,121 1,121 0.04 0.01 — 1,123
Enclose
d
P
arking
with
Elevator
— — — — — — — — — — — — 367 367 0.01 < 0.005 — 368
Total — — — — — — — — — — — — 1,488 1,488 0.06 0.01 — 1,491 Annual — — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
— — — — — — — — — — — — 186 186 0.01 < 0.005 — 186
Enclose
d
P
arking
with
Elevator
— — — — — — — — — — — — 60.8 60.8 < 0.005 < 0.005 — 60.9 Total — — — — — — — — — — — — 246 246 0.01 < 0.005 — 247
4.2.3. Natural Gas Emissions By Land Use - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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0.00—0.000.000.000.00—0.00—0.000.00—0.000.000.000.000.000.00Enclose d
Parking
with
Ele
vator
Total 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Enclose
d
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Annual — — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Enclose
d
P
arking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00
4.3. Area Emissions by Source
4.3.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Consum
er
Product
s
0.01 0.01 — — — — — — — — — — — — — — — —
Architect
ur
al
Coating
s
0.01 0.01 — — — — — — — — — — — — — — — —
Landsca
pe
Equipm
ent
1.61 1.48 0.08 9.04 < 0.005 0.02 — 0.02 0.01 — 0.01 — 37.2 37.2 < 0.005 < 0.005 — 37.3 Total 1.62 1.50 0.08 9.04 < 0.005 0.02 — 0.02 0.01 — 0.01 — 37.2 37.2 < 0.005 < 0.005 — 37.3 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Consum
er
Product
s
0.01 0.01 — — — — — — — — — — — — — — — —
Architect
ur
al
Coating
s
0.01 0.01 — — — — — — — — — — — — — — — —
Total 0.02 0.02 — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Consum
er
Product
s
< 0.005 < 0.005 — — — — — — — — — — — — — — — —
Architect
ur
al
Coating
s
< 0.005 < 0.005 — — — — — — — — — — — — — — — —
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Landsca
Equipment
0.20 0.19 0.01 1.13 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.21 4.21 < 0.005 < 0.005 — 4.23 Total 0.20 0.19 0.01 1.13 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.21 4.21 < 0.005 < 0.005 — 4.23
4.4. Water Emissions by Land Use
4.4.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
— — — — — — — — — — — 0.00 3.15 3.15 < 0.005 < 0.005 — 3.15 Enclose
d
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.00 3.15 3.15 < 0.005 < 0.005 — 3.15 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
— — — — — — — — — — — 0.00 3.15 3.15 < 0.005 < 0.005 — 3.15 Enclose
d
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
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Total — — — — — — — — — — — 0.00 3.15 3.15 < 0.005 < 0.005 — 3.15 Annual — — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.52 0.52 < 0.005 < 0.005 — 0.52 Enclose
d
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.00 0.52 0.52 < 0.005 < 0.005 — 0.52
4.5. Waste Emissions by Land Use
4.5.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Enclose
d
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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——————————————————Daily,
Winter
(Max)
Unenclo
sed
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Enclose
d
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00 Annual — — — — — — — — — — — — — — — — — —
Unenclo
sed
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Enclose
d
P
arking
with
Elevator
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
4.6. Refrigerant Emissions by Land Use
4.6.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
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Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
4.7. Offroad Emissions By Equipment Type
4.7.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm
ent
T
ype
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
4.8. Stationary Emissions By Equipment Type
4.8.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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CO2eRN2OCH4CO2TNBCO2BCO2PM2.5TPM2.5DPM2.5EPM10TPM10DPM10ESO2CONOxROGTOGEquipm ent
Type
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
4.9. User Defined Emissions By Equipment Type
4.9.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm
ent
T
ype
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
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4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetati
on
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
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4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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——————————————————Sequest
ered
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
5. Activity Data
5.1. Construction Schedule
Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Demolition Demolition 4/1/2025 6/1/2025 5.00 44.0 —
Site Preparation Site Preparation 6/2/2025 6/29/2025 5.00 20.0 — Grading Grading 6/30/2025 9/28/2025 5.00 65.0 —
Infrastructure
Impro
vement
Building Construction 10/1/2025 12/31/2025 5.00 66.0 —
Building Construction Building Construction 9/29/2025 2/15/2026 5.00 100 — Paving Paving 2/16/2026 6/28/2026 5.00 95.0 —
Architectural Coating Architectural Coating 2/16/2026 7/31/2026 5.00 120 —
5.2. Off-Road Equipment
5.2.1. Unmitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Demolition Concrete/Industrial
Sa
ws
Diesel Tier 4 Final 1.00 8.00 33.0 0.73
Demolition Rubber Tired Dozers Diesel Tier 4 Final 1.00 8.00 367 0.40 Demolition Tractors/Loaders/Back
hoes
Diesel Tier 4 Final 3.00 8.00 84.0 0.37
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Site Preparation Graders Diesel Tier 4 Final 1.00 8.00 148 0.41 Site Preparation Rubber Tired Dozers Diesel Tier 4 Final 1.00 7.00 367 0.40 Site Preparation Tractors/Loaders/Back
hoes
Diesel Tier 4 Final 1.00 8.00 84.0 0.37
Grading Graders Diesel Tier 4 Final 1.00 8.00 148 0.41
Grading Rubber Tired Dozers Diesel Tier 4 Final 1.00 8.00 367 0.40 Grading Tractors/Loaders/Back
hoes
Diesel Tier 4 Final 2.00 7.00 84.0 0.37
Infrastructure
Impro
vement
Cranes Diesel Tier 4 Final 1.00 6.00 367 0.29
Infrastructure
Impro
vement
Forklifts Diesel Tier 4 Final 1.00 6.00 82.0 0.20
Infrastructure
Impro
vement
Generator Sets Diesel Tier 4 Final 1.00 8.00 14.0 0.74
Infrastructure
Impro
vement
Tractors/Loaders/Back
hoes
Diesel Tier 4 Final 1.00 6.00 84.0 0.37
Infrastructure
Impro
vement
Welders Diesel Tier 4 Final 3.00 8.00 46.0 0.45
Building Construction Cranes Diesel Tier 4 Final 1.00 6.00 367 0.29 Building Construction Forklifts Diesel Tier 4 Final 1.00 6.00 82.0 0.20 Building Construction Generator Sets Diesel Tier 4 Final 1.00 8.00 14.0 0.74 Building Construction Tractors/Loaders/Back
hoes
Diesel Tier 4 Final 1.00 6.00 84.0 0.37
Building Construction Welders Diesel Tier 4 Final 3.00 8.00 46.0 0.45 Paving Cement and Mortar
Mix
ers
Diesel Tier 4 Final 1.00 6.00 10.0 0.56
Paving Pavers Diesel Tier 4 Final 1.00 6.00 81.0 0.42
Paving Paving Equipment Diesel Tier 4 Final 1.00 8.00 89.0 0.36 Paving Rollers Diesel Tier 4 Final 1.00 7.00 36.0 0.38
Paving Tractors/Loaders/Back
hoes
Diesel Tier 4 Final 1.00 8.00 84.0 0.37
Architectural Coating Air Compressors Diesel Tier 4 Final 1.00 6.00 37.0 0.48 PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices RCH Parking Garage Detailed Report, 12/10/2024
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5.3. Construction Vehicles
5.3.1. Unmitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Demolition — — — —
Demolition Worker 12.5 18.5 LDA,LDT1,LDT2
Demolition Vendor — 10.2 HHDT,MHDT
Demolition Hauling 34.1 20.0 HHDT
Demolition Onsite truck — — HHDT
Site Preparation — — — —
Site Preparation Worker 7.50 18.5 LDA,LDT1,LDT2
Site Preparation Vendor — 10.2 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck — — HHDT
Grading — — — —
Grading Worker 10.0 18.5 LDA,LDT1,LDT2
Grading Vendor — 10.2 HHDT,MHDT
Grading Hauling 28.8 20.0 HHDT
Grading Onsite truck — — HHDT
Infrastructure Improvement — — — —
Infrastructure Improvement Worker 87.3 18.5 LDA,LDT1,LDT2 Infrastructure Improvement Vendor 34.1 10.2 HHDT,MHDT
Infrastructure Improvement Hauling 0.00 20.0 HHDT
Infrastructure Improvement Onsite truck — — HHDT
Building Construction — — — —
Building Construction Worker 87.3 18.5 LDA,LDT1,LDT2
Building Construction Vendor 34.1 10.2 HHDT,MHDT
Building Construction Hauling 0.00 20.0 HHDT
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Building Construction Onsite truck — — HHDT
Paving — — — —
Paving Worker 12.5 18.5 LDA,LDT1,LDT2
Paving Vendor — 10.2 HHDT,MHDT
Paving Hauling 0.00 20.0 HHDT
Paving Onsite truck — — HHDT
Architectural Coating — — — —
Architectural Coating Worker 34.9 18.5 LDA,LDT1,LDT2
Architectural Coating Vendor — 10.2 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck — — HHDT
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
Non-applicable. No control strategies activated by user.
5.5. Architectural Coatings
Phase Name Residential Interior Area
Coated
(sq ft)
Residential Exterior Area
Coated
(sq ft)
Non-Residential Interior Area
Coated
(sq ft)
Non-Residential Exterior Area
Coated
(sq ft)
Parking Area Coated (sq ft)
Architectural Coating 0.00 0.00 3,450 383 4,600
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
Phase Name Material Imported (cy) Material Exported (cy) Acres Graded (acres) Material Demolished (Ton of Debr
is)
Acres Paved (acres)
Demolition 0.00 0.00 0.00 6,005 —
Site Preparation — — 18.8 0.00 —
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Grading — 15,000 65.0 0.00 —
Paving 0.00 0.00 0.00 0.00 1.76
5.6.2. Construction Earthmoving Control Strategies
Control Strategies Applied Frequency (per day) PM10 Reduction PM2.5 Reduction Water Exposed Area 2 61% 61%
5.7. Construction Paving
Land Use Area Paved (acres) % Asphalt
Unenclosed Parking with Elevator 1.76 100%
Enclosed Parking with Elevator 0.00 100%
5.8. Construction Electricity Consumption and Emissions Factors kWh per Y ear and Emission Factor (lb/MWh)
Y ear kWh per Y ear CO2 CH4 N2O
2025 0.00 873 0.03 < 0.005
2026 0.00 873 0.03 < 0.005
5.9. Operational Mobile Sources
5.9.1. Unmitigated
Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Y ear VMT/Weekday VMT/Saturday VMT/Sunday VMT/Y ear Unenclosed
P
arking with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Enclosed Parking
with
Elevator
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
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5.10. Operational Area Sources
5.10.1. Hearths
5.10.1.1. Unmitigated
5.10.2. Architectural Coatings
Residential Interior Area Coated (sq
ft)
Residential Exterior Area Coated (sq
ft)
Non-Residential Interior Area Coated
(sq
ft)
Non-Residential Exterior Area
Coated
(sq ft)
Parking Area Coated (sq ft)
0 0.00 3,450 383 4,600
5.10.3. Landscape Equipment
Season Unit Value
Snow Days day/yr 0.00
Summer Days day/yr 250
5.11. Operational Energy Consumption
5.11.1. Unmitigated
Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr) CO2 CH4 N2O Natural Gas (kBTU/yr) Unenclosed Parking with
Ele
vator
468,419 873 0.0330 0.0040 0.00
Enclosed Parking with
Ele
vator
153,401 873 0.0330 0.0040 0.00
5.12. Operational Water and Wastewater Consumption
5.12.1. Unmitigated
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Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Unenclosed Parking with Elevator 0.00 247,856
Enclosed Parking with Elevator 0.00 0.00
5.13. Operational Waste Generation
5.13.1. Unmitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Unenclosed Parking with Elevator 0.00 —
Enclosed Parking with Elevator 0.00 —
5.14. Operational Refrigeration and Air Conditioning Equipment
5.14.1. Unmitigated
Land Use Type Equipment Type Refrigerant GWP Quantity (kg) Operations Leak Rate Service Leak Rate Times Serviced
5.15. Operational Off-Road Equipment
5.15.1. Unmitigated
Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor
5.16. Stationary Sources
5.16.1. Emergency Generators and Fire Pumps
Equipment Type Fuel Type Number per Day Hours per Day Hours per Y ear Horsepower Load Factor
5.16.2. Process Boilers
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Equipment Type Fuel Type Number Boiler Rating (MMBtu/hr) Daily Heat Input (MMBtu/day) Annual Heat Input (MMBtu/yr)
5.17. User Defined
Equipment Type Fuel Type
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
Biomass Cover Type Initial Acres Final Acres
5.18.2. Sequestration
5.18.2.1. Unmitigated
Tree Type Number Electricity Saved (kWh/year) Natural Gas Saved (btu/year)
6. Climate Risk Detailed Report
6.1. Climate Risk Summary
Cal-Adapt midcentury 2040–2059 average projections for four hazards are reported below for your project location. These are under Representation Concentration Pathway (RCP) 8.5 which assumes
GHG emissions will continue to rise strongly through 2050 and then plateau around 2100.
Climate Hazard Result for Project Location Unit
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Temperature and Extreme Heat 25.6 annual days of extreme heat Extreme Precipitation 2.20 annual days with precipitation above 20 mm Sea Level Rise — meters of inundation depth
Wildfire 1.19 annual hectares burned
Temperature and Extreme Heat data are for grid cell in which your project are located. The projection is based on the 98th historical percentile of daily maximum/minimum temperatures from obser
ved historical data (32 climate model ensemble from Cal-Adapt, 2040–2059 average under RCP 8.5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.
Extreme Precipitation data are for the grid cell in which your project are located. The threshold of 20 mm is equivalent to about ¾ an inch of rain, which would be light to moderate rainfall if receiv
ed over a full day or heavy rain if received over a period of 2 to 4 hours. Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.
Sea Level Rise data are for the grid cell in which your project are located. The projections are from Radke et al. (2017), as reported in Cal-Adapt (Radke et al., 2017, CEC-500-2017-008), and consider
inundation location and depth for the San Francisco Bay, the Sacramento-San Joaquin River Delta and California coast resulting different increments of sea level rise coupled with extreme storm events. Users may select from four scenarios to view the range in potential inundation depth for the grid cell. The four scenarios are: No rise, 0.5 meter, 1.0 meter, 1.41 meters Wildfire data are for the grid cell in which your project are located. The projections are from UC Davis, as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider historical data of
climate, vegetation, population density, and large (> 400 ha) fire history. Users may select from four model simulations to view the range in potential wildfire probabilities for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.
6.2. Initial Climate Risk Scores
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 0 0 N/A
Extreme Precipitation N/A N/A N/A N/A
Sea Level Rise 1 0 0 N/A
Wildfire 1 0 0 N/A
Flooding N/A N/A N/A N/A
Drought N/A N/A N/A N/A
Snowpack Reduction N/A N/A N/A N/A
Air Quality Degradation 0 0 0 N/A
The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the g
reatest exposure.
The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing
the greatest ability to adapt.
The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores do not include implementation of climate risk reduction measures
.
6.3. Adjusted Climate Risk Scores
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Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 1 1 3
Extreme Precipitation N/A N/A N/A N/A
Sea Level Rise 1 1 1 2
Wildfire 1 1 1 2
Flooding N/A N/A N/A N/A
Drought N/A N/A N/A N/A
Snowpack Reduction N/A N/A N/A N/A
Air Quality Degradation 1 1 1 2
The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the g
reatest exposure.
The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing
the greatest ability to adapt.
The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores include implementation of climate risk reduction measures
.
6.4. Climate Risk Reduction Measures
7. Health and Equity Details
7.1. CalEnviroScreen 4.0 Scores
The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state.
Indicator Result for Project Census Tract
Exposure Indicators —
AQ-Ozone 97.0
AQ-PM 91.0
AQ-DPM 96.0
Drinking Water 77.4
Lead Risk Housing 81.5
Pesticides 0.00
Toxic Releases 56.7
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Traffic 68.2
Effect Indicators —
CleanUp Sites 88.4
Groundwater 85.1
Haz Waste Facilities/Generators 84.9
Impaired Water Bodies 0.00
Solid Waste 9.67
Sensitive Population —
Asthma 91.3
Cardio-vascular 96.4
Low Birth Weights 87.6
Socioeconomic Factor Indicators —
Education 63.6
Housing 78.7
Linguistic 59.8
Poverty 78.0
Unemployment 73.4
7.2. Healthy Places Index Scores
The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state.
Indicator Result for Project Census Tract
Economic —
Above Poverty 19.49185166
Employed 2.130116771
Median HI 5.556268446
Education —
Bachelor's or higher 24.75298345
High school enrollment 3.772616451
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Preschool enrollment 1.873476197
Transportation —
Auto Access 5.158475555
Active commuting 87.77107661
Social —
2-parent households 12.6780444
Voting 1.976132427
Neighborhood —
Alcohol availability 14.92364943
Park access 81.35506224
Retail density 97.92121134
Supermarket access 80.46965225
Tree canopy 28.26895932
Housing —
Homeownership 6.236365969
Housing habitability 31.64378288
Low-inc homeowner severe housing cost burden 85.70511998 Low-inc renter severe housing cost burden 42.52534326
Uncrowded housing 31.19466188
Health Outcomes —
Insured adults 13.22982163
Arthritis 30.2
Asthma ER Admissions 5.5
High Blood Pressure 19.3
Cancer (excluding skin) 57.8
Asthma 12.1
Coronary Heart Disease 23.5
Chronic Obstructive Pulmonary Disease 8.5
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Diagnosed Diabetes 35.6
Life Expectancy at Birth 4.5
Cognitively Disabled 15.2
Physically Disabled 10.8
Heart Attack ER Admissions 10.1
Mental Health Not Good 13.8
Chronic Kidney Disease 35.4
Obesity 8.0
Pedestrian Injuries 90.5
Physical Health Not Good 18.1
Stroke 17.3
Health Risk Behaviors —
Binge Drinking 33.9
Current Smoker 4.4
No Leisure Time for Physical Activity 19.3
Climate Change Exposures —
Wildfire Risk 0.0
SLR Inundation Area 0.0
Children 78.7
Elderly 45.2
English Speaking 52.7
Foreign-born 22.8
Outdoor Workers 43.6
Climate Change Adaptive Capacity —
Impervious Surface Cover 47.5
Traffic Density 69.5
Traffic Access 71.3
Other Indices —
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Hardship 79.2
Other Decision Support —
2016 Voting 17.3
7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a) 98.0 Healthy Places Index Score for Project Location (b) 1.00 Project Located in a Designated Disadvantaged Community (Senate Bill 535) Y es Project Located in a Low-Income Community (Assembly Bill 1550) Y es Project Located in a Community Air Protection Program Community (Assembly Bill 617) No a: The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. b: The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state.
7.4. Health & Equity Measures
No Health & Equity Measures selected.
7.5. Evaluation Scorecard
Health & Equity Evaluation Scorecard not completed.
7.6. Health & Equity Custom Measures
No Health & Equity Custom Measures created.
8. User Changes to Default Data
Screen Justification
Land Use Project Area 1.66 ac + 0.1 ac of off site improvements Construction: Construction Phases Project Schedule
Construction: Off-Road Equipment Final EIR MM A-2 requiring Tier 4 or better PR-2024-001701 (GPA, SPA, RZ, DR) Exhibit 13 - EIR Addendum and appedices