Consistency with Clean Air Plan Control Measures
The BAAQMD CEQA Air Quality Guidelines establish criteria for determining consistency with the Clean Air Plan control measures. In general, a plan is considered consistent if a) the plan supports the primary goals of the Clean Air Plan; b) includes control measures; and c) does not interfere with implementation of the Clean Air Plan measures. Growth under the Housing Element Update changes is considered sustainable since it is a plan for infill development. Atherton is served by local and regional transit and is located near a mix of uses that include employment and services located in adjacent jurisdictions. The Town of Atherton relies on strategies in its adopted Climate Action Plan to guide new development to meet GHG reduction goals. These goals are also in line with Clean Air Plan control measures. The development in the Town under the proposed Amendment changes is consistent with the Town’s General Plan and would generally be consistent with Clean Air Plan measures intended to reduce automobile and energy use. Table 11 lists those Clean Air Plan measures relevant to the Amendment changes and indicates consistency between the Town’s General Plan, Climate Action Plan, and the Clean Air Plan.
Table 11. BAAQMD Control Strategy Measures from the Clean Air Plan Applicable BAAQMD Control Strategy
Measures Consistency
Transportation Control Measures
TR1: Clean Air Teleworking Initiative Consistent
Supported by CAP Goal 3.2.1 Measure TRM2.
TR2: Trip Reduction Programs
TR 5: Transit Efficiency and Use
Consistent
Supported by CAP Goal 3.2.1 Measure TRM3.
Consistent
Supported by Circulation Element Goal CIR-5
Policy CIR-5.6 and Goal CIR-6 Objective CIR6.2.
TR7: Safe Routes to Schools and Safe Routes to
Transit
TR8: Ridesharing, Last-Mile Connection
Consistent
Supported by Cap Goal 3.2.1 Measure TRC2.
Consistent
Supported by CAP Goal 3.2.1 Measure TRM3.
TR9: Bicycle and Pedestrian Access and Facilities Consistent Supported by General Plan Circulation Element
Goal CIR-4 Objectives CIR-4.1 and 4.2.
Also supported by CAP Goal 3.2.1 Measure
TRC1.
TR10: Land Use Strategies Consistent
Supported by General Plan Land Use Element
Goal LU-1 Policies LU-1.5 and 1.7.
Also supported by Cap Goal 3.2.1 Measure
TRC1.
TR13: Parking Policies Consistent
Supported by General Plan Circulation Element
Goal CIR-1 Policies CIR-1.7 and 1.13 as well as
Land Use Element Goal LU-1 Policy LU-1.5.
Building Control Measures
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Applicable BAAQMD Control Strategy
Measures Consistency
BL1: Green Buildings Consistent
Supported by General Plan Open Space and
Conservation Element Goal OSC-5.
Also supported by CAP Goal 3.1.1 Measures
EC1, EC2, EC4, EC5, EC6, EM2, EM3, EM4.
BL2: Decarbonize Buildings Consistent
Supported by General Plan Open Space and
Conservation Element Goal OSC-5.
Also supported by CAP Goal 3.1.1 Measures
EC1, EC2, EC4, EC5, EC6, EM2, EM3, EM4.
BL4: Urban Heat Island Mitigation Consistent
Supported by CAP Goal 3.1.1 Measure EC3.
Natural and Working Lands Control Measures
NW2: Urban Tree Planting Consistent
Supported by General Plan Land Use Element
Goal LU-1 Policies LU 1.5 and 1.8, Open Space
and Conservation Element Goal OSC-1 Policy
OSC-1.1 and Goal OSC-2 Policies 2.1, 2.2, and
2.3. Also supported by CAP Goal 3.1.1 Measure EC3.
Waste Management Control Measures
WA4: Recycling and Waste Reduction Consistent
Supported by General Plan Open Space and
Conservation Element Goal OSC-5.
Also supported by CAP Goal 3.3.1 Measures
WC1, WC2, WC3, WM1, WM2, and WM3.
Water Control Measures
WR2: Support Water Conservation Consistent
Supported by General Plan Open Space and
Conservation Element Goal OSC-3 Action OSC3.2 and Goal OSC-5.
Also supported by CAP Goal 3.1.1 Measures
WTRC1, WTRC2, and WTRC3.
As indicated in Table 11, the Town’s General Plan and CAP includes implementing policies and measures that are consistent with the applicable Clean Air Plan control measures. As a result, this impact is less-than-significant.
Impact AIR-2: Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is nonattainment under an applicable federal or state ambient air quality standard? The Bay Area is considered a nonattainment area for ozone and PM2.5 under both the NAAQS and the CAAQS and nonattainment for PM10 under the CAAQS only. The area has attained the NAAQS and CAAQS for CO. As part of an effort to attain and maintain the NAAQS/CAAQS for ozone and PM10, the BAAQMD has established CEQA thresholds of significance for these air pollutants and their precursors (ROG, NO , PM , and PM ). These thresholds apply to both X 10 2.5 30
construction period and operational period impacts. The quantified thresholds identified by BAAQMD apply only to projects.
Construction Emissions
Build-out of the proposed Project housing sites would result in temporary emissions from construction activities associated with subsequent development, including site grading, asphalt paving, building construction, and architectural coating. Emissions commonly associated with construction activities include fugitive dust from soil disturbance, fuel combustion from mobile heavy-duty diesel- and gasoline-powered equipment, portable auxiliary equipment, and worker commute trips.
Fugitive dust, the dominant source of PM10 and PM2.5 emissions during construction, is generated through the ground disturbances by equipment and vehicles. Sources of fugitive dust include disturbed soils at the construction site and trucks carrying uncovered loads of soils. Unless properly controlled, vehicles leaving the site would deposit mud on local streets, which could be an additional source of airborne dust after it dries. Uncontrolled dust from construction activities can become a nuisance and potential health hazard to those living and working nearby.
Exhaust emissions include those from construction equipment (i.e., off-road) and traffic (on-road vehicles and trucks). Off-road construction equipment is often diesel-powered and can be a substantial source of NOX emissions, in addition to PM10 and PM2.5 emissions. Architectural coatings and application of asphalt pavement are dominant sources of ROG emissions. The potential health risk impacts from construction are addressed under Impact 3.
Emissions associated with all of the projects that would be constructed under the proposed zoning amendments may have levels that exceed the significance thresholds. However, the pollutant emissions thresholds for construction activities contained in BAAQMD’s CEQA Air Quality Guidelines would apply to specific housing projects and not this action of adopting zoning code amendments. Buildout would consist of numerous construction projects that would occur at various times over many years.
The BAAQMD CEQA Air Quality Guidelines include project size screening levels to determine if there is a potential for projects to exceed the emission-based significance thresholds. Projects constructed would range from a single ADU up to about 60 multi-family units. The project-level screening size ranges from 254 single-family homes to 416 apartment units. Construction of individual residential projects affected by the proposed Project would not exceed these screening levels.
However, the BAAQMD’s CEQA Air Quality Guidelines The BAAQMD recommends all projects include a “basic” set of best management practices (BMPs) to manage fugitive dust and considers impacts from dust (i.e., fugitive PM and PM ) to be less-than-significant if BMPs are 10 2.5 implemented to reduce these emissions. Mitigation Measure AQ-1 would implement BAAQMD’s basic BMPs.
31
Mitigation Measure AQ-1: Include measures to control dust and exhaust during construction.
During any construction period ground disturbance, the project contractor shall implement measures to control dust and exhaust. Implementation of the measures listed below would reduce the air quality impacts associated with grading and new construction to a less-than-significant level. The contractor shall implement the following BMPs that are required of all projects:
1. All exposed surfaces (e.g., parking areas, staging areas, soil piles, graded areas, and unpaved access roads) shall be watered two times per day.
2. All haul trucks transporting soil, sand, or other loose material off-site shall be covered.
3. All visible mud or dirt track-out onto adjacent public roads shall be removed using wet power vacuum street sweepers at least once per day. The use of dry power sweeping is prohibited.
4. All vehicle speeds on unpaved roads shall be limited to 15 miles per hour (mph).
5. All roadways, driveways, and sidewalks to be paved shall be completed as soon as possible.
Building pads shall be laid as soon as possible after grading unless seeding or soil binders are used.
6. All excavation, grading, and/or demolition activities shall be suspended when average wind speeds exceed 20 mph.
7. All trucks and equipment, including their tires, shall be washed off prior to leaving the site.
8. Unpaved roads providing access to sites located 100 feet or further from a paved road shall be treated with a 6- to 12-inch layer of compacted layer of wood chips, mulch, or gravel.
9. Publicly visible signs shall be posted with the telephone number and name of the person to contact at the lead agency regarding dust complaints. This person shall respond and take corrective action within 48 hours. The Air District’s General Air Pollution Complaints number shall also be visible to ensure compliance with applicable regulations.
Operational Emissions
Similar to construction, the BAAQMD CEQA Guidelines have project-level screening sizes for operational emissions. Those would be the emissions associated with new residential units that include the projections of increased traffic. The screening size ranges from 421 single-family homes to 638 apartment units. Development of individual residential projects affected by the proposed Project would not exceed these screening levels.
Conclusion: The individual project sizes are below screening sizes for both construction and operational criteria pollutant emissions. The implementation of Mitigation Measure AQ-1 to include BAAQMD’s basic BMPs during construction would reduce construction pollutant levels, 32
such that they would be consistent with BAAQMD requirements. Therefore, emissions of construction and operational related air pollutants would be less than significant.
Impact AIR-3: Expose sensitive receptors to substantial pollutant concentrations? To address exposure of sensitive receptors to substantial pollutant levels, the BAAQMD CEQA Guidelines developed thresholds that address health risks. These include increased cancer risk, non-cancer hazards, and increased annual concentrations of PM2.5. Diesel particulate matter (DPM) is the predominant TAC in the area. The thresholds apply to impacts from plans and individual projects.
The BAAQMD CEQA Guidelines recommend that plan-level assessments identify overlay zones around existing and planned sources of TACs (including adopted Risk Reduction Plan areas) and develop risk reduction measures to avoid exposures.
Individual projects within the Town may introduce new sources of TACs with the potential to adversely affect existing sensitive receptors in the vicinity of the House Element Update areas or by significantly exacerbating existing cumulative TAC impacts. Construction activity would generate dust and equipment exhaust that would affect nearby sensitive receptors.
TAC Buffer Zones
The proposed Project may lead to the introduction of new sensitive receptors (i.e., residents) that may be exposed to substantial levels of air pollutants or TACs. Substantial sources of air pollution can adversely affect sensitive receptors proposed as part of new projects. BAAQMD recommends using buffer zones of at least 500 feet between highways or high-volume roadways and sensitive receptors. BAAQMD provides screening level TAC exposures for roadways, train lines, and stationary sources. BAAQMD recommends that lead agencies should use the significance thresholds for local risk and hazards when siting new sensitive thresholds near TAC sources.
Major TAC sources within the Town were identified for the Project using BAAQMD screening tools. The primary large volume roadway in Atherton is El Camino Real. The CalTrain line also runs through Atherton which could affect residential sites. There are several stationary sources identified within the Town limits using the BAAQMD’s stationary source GIS mapping tool.11 Emissions from most of these sources do not cause substantial risk beyond their facility boundaries.
Screening risk levels are shown in Table 12 for sources that present potential health risk issues.
Figure 2 shows the Town limits and locations of the TAC sources. Details of the nearby TAC sources screening calculations are included in Attachment 2.
Mitigation Measure AQ-2: Require Future Residential Projects Affected by TAC sources to Perform a Health Risk Assessment.
Residential projects proposed that are potentially affected by existing TAC sources (see Table 12 and Figure 2) shall prepare a site-specific health risk assessment (HRA). If the HRA demonstrates, 11 BAAQMD, Website:
https://baaqmd.maps.arcgis.com/apps/webappviewer/index.html?id=2387ae674013413f987b1071715daa65 33
to the satisfaction of the Town, that the health risk exposures for sensitive receptors will be less than BAAQMD project-level thresholds, then additional mitigation would be unnecessary.
However, if the HRA demonstrates that health risks would exceed BAAQMD project level thresholds, additional feasible on- and off-site mitigation shall be analyzed by the applicant to help reduce risks to the greatest extent practicable. Such measures to be evaluated may include enhanced ventilation systems with filtration capable of reducing TAC exposure such that health risks are reduced to acceptable levels.
Table 12. Screening Distances from Existing Air Pollutant and TAC Sources Distance to Screening Threshold1
Hazard
Index
0 2
Annual
PM2.5
400 ft
Source Description
Roadway: El Camino Real
Cancer Risk
300 ft
Sites Potentially Affected
Menlo College
2,500 ft north
2,000 ft south Caltrain1 0
2 02
--
Stationary: #0 California Water
Service Company – Gas Dispensing
Facility
0 2 02
-- Cal Water
Stationary: #7852 California Water
Service Company – Generic Source
Stationary: #15362 George Roberts
– Generator
Stationary: #19395 Religious of
Sacred Heart Oakwood – Generator
Stationary: #19442 Sequoia Union
High School District – Generator
Stationary: #23128 Linden
0 2
0 2
0 2
0 2
--
0 2
--
--
--
--
--
--
--
--
0 2
0 2
0 2
0 2
0 2
--
Cal Water
15 and 25 Monte Vista Ave
Sacred Heart, Circus Club,
Menlo School
175, 185, and 197
Ravenswood Ave
0 2
200 ft
0 2
-- Residence – Generator
Stationary: #23631 Residence of Dr
Joe Donahue – Generic Source
Stationary: #23730 John B Rohrer
Private Residence – Generator
Stationary: #23862 130 Britton
LLCI – Generic Source
Stationary: #23926 142 Britton
Avenue LLC – Generator
Stationary: #24244 Nevitt Magruder
Residence – Generator
Stationary: #24280 John Freund
Atherton Residence – Generator
Stationary: #110721 Marsh Road
Shell – Gas Dispensing Facility
Stationary: #201322 Pink Sunset –
Generator
0 2
-- --
-- -- --
0 2 02
--
Circus Club and Sacred Heart
0 2 Circus Club and Sacred Heart
0 2
-- --
--
--
--
-- --
0 2
--
200 ft 0
2 1 Note CalTrain will transition most diesel-powered trains to electric powered beginning in 2024. The screening distances predicted by BAAQMD do not reflect the modernization of this program and therefore, predict greater screening distances for CalTrain.
2 Extent of risk within source boundaries.
34
Figure 2. Town Limits and Nearby TAC and PM2.5 Sources
35
Health Risks from Construction of Residential Projects
Construction of residential projects could emit TACs. Most housing sites are located near sensitive receptors that include residences and/or schools. Construction equipment and associated heavyduty truck traffic generates diesel exhaust, which is a known TAC. The construction exhaust emissions may pose health risks for sensitive receptors such as nearby residents. The primary health risks associated with construction emissions are cancer, exposure to PM2.5, and non-cancer health hazards. Diesel exhaust (i.e., DPM) poses both a potential health risk and nuisance impact to nearby receptors. Most new residential construction would not have significant impacts because these projects involve reconstructing existing structures or building accessory dwelling units or single structures. This type of construction does not require extensive use of diesel equipment over extended periods (e.g., over 6 months). The construction of new multi-family developments may have localized impacts due to TACs because they would require more extensive construction. A health risk assessment for multi-family developments was performed.
The health risk assessment was performed for two different sized multi-family projects of 20 units (Menlo School Site 2) and 60 units ( Menlo College Site 1), which are the smallest and largest number of multi-family units proposed. CalEEMod was used to develop construction emissions of TACs and PM2.5 for each size project using the model’s default construction assumptions.
Emissions were then input to the U.S. EPA’s AERMOD dispersion model to compute potential exposures to TACs and PM2.5 near construction sites. Emission sources for the construction site were grouped into two categories: exhaust emissions of DPM and fugitive PM2.5 dust emissions.
Construction Sources
To represent the construction equipment exhaust emissions, an area source was used with an emission release height of 20 feet (6 meters).12 The release height incorporates both the physical release height from the construction equipment (i.e., the height of the exhaust pipe) and plume rise after it leaves the exhaust pipe. Plume rise is due to both the high temperature of the exhaust and the high velocity of the exhaust gas. It should be noted that when modeling an area source, plume rise is not calculated by the AERMOD dispersion model as it would do for a point source (exhaust stack). Therefore, the release height from an area source used to represent emissions from sources with plume rise, such as construction equipment, was based on the height the exhaust plume is expected to achieve, not just the height of the top of the exhaust pipe.
For modeling fugitive PM2.5 emissions, an area source with a near-ground level release height of 7 feet (2 meters) was used. Fugitive dust emissions at construction sites come from a variety of sources, including truck and equipment travel, grading activities, truck loading (with loaders) and unloading (rear or bottom dumping), loaders and excavators moving and transferring soil and other materials, etc. All of these activities result in fugitive dust emissions at various heights at the point(s) of generation. Once generated, the dust plume will tend to rise as it moves downwind across the site and exit the site at a higher elevation than when it was generated. For all these reasons, a 7-foot release height was used as the average release height across the construction sites. 12 California Air Resource Board, 2007. Proposed Regulation for In-Use Off-Road Diesel Vehicles, Appendix D: Health Risk Methodology. April. Web: https://ww3.arb.ca.gov/regact/2007/ordiesl07/ordiesl07.htm 36
AERMOD Inputs and Meteorological Data
The modeling used a five-year data set (2011 - 2015) of hourly meteorological data from San Carlos Airport prepared for use with the AERMOD model by BAAQMD. Construction emissions were modeled as occurring daily between 8:00 a.m. to 5:00 p.m. when the majority of construction activities would occur. Annual DPM and PM2.5 concentrations from construction activities were calculated at nearby sensitive receptors using the model. Receptors were placed in 33 feet (10 meters) spacing surrounding the two construction sites with receptor heights of 5 feet (1.5 meters) used to represent the breathing heights at the nearby residences.13 Summary of Construction Health Risk Impacts
The maximum increased cancer risks were calculated using the modeled TAC concentrations combined with the BAAQMD CEQA guidance for age sensitivity factors and exposure parameters. Age-sensitivity factors reflect the greater sensitivity of infants and small children to cancer causing TACs. Third trimester, infant, child, and adult exposures were assumed to occur at all residences during the entire construction period. Non-cancer health hazards and maximum PM2.5 concentrations were also calculated. The maximum modeled annual PM2.5 concentration was calculated based on combined exhaust and fugitive concentrations. The maximum computed HI value was based on the ratio of the maximum DPM concentration modeled and the chronic inhalation refence exposure level of 5 µg/m3. Attachment 3 to this report includes the emission calculations used for the construction modeling and the cancer risk calculations.
Conclusion: The modeled maximum annual DPM and PM2.5 concentrations were identified at nearby sensitive receptors and are shown in Table 13. The unmitigated maximum cancer risks from construction activities at the most impacted off-site receptors would exceed the single-source significance threshold at both the 60-unit and 20-unit multi-family housing. However, with the incorporation of Mitigation Measure AQ-1 (basic BMPs) and Mitigation Measure AQ-3 (use of Tier 4 engines), the mitigated risks would no longer exceed the significance threshold. The annual PM2.5 concentration and HI from construction activities would be below the single-source significance thresholds.
Table 13. Maximum Construction Risk Impacts at the Off-Site Receptors Cancer Risk Annual PM2.5 Hazard Source (per million) (µg/m3 )
<0.30
0.10 0.02
0.29 0.07
>0.3
No
Index
<1.0
0.01 <0.01
0.04 0.01
>1.0
No
Multi-Family Construction - <20 Units
Multi-Family Construction - 20 Units
Unmitigated <10.0
Unmitigated 12.05 (infant)
Mitigated* 1.43 (infant)
Unmitigated 33.73 (infant)
Mitigated* 5.80 (infant)
Multi-Family Construction - 60 Units
BAAQMD Single-Source Threshold >10.0
Exceed Threshold? Unmitigated Yes
Mitigated* No No No
* Construction equipment with Tier 4 engines and basic BMPs as Mitigation Measures. 13 BAAQMD, Appendix E of the 2022 BAAQMD CEQA Guidelines. April 202.3 37
Mitigation Measure AQ-3: Require Future Construction Projects Located within 1,000 Feet of Sensitive Receptors to Perform a Health Risk Assessment.
Multi-unit residential projects, larger than 10 units, and within 1,000 feet of existing sensitive receptors as defined by the BAAQMD (e.g., residential, daycares, schools) shall prepare a projectspecific construction health risk assessment (HRA). If the HRA demonstrates, to the satisfaction of the Town, that the health risk exposures for adjacent receptors will be less than BAAQMD project-level thresholds, then additional mitigation would be unnecessary. However, if the HRA demonstrates that health risks would exceed BAAQMD project level thresholds, additional feasible mitigation shall be analyzed to further reduce risks to the greatest extent practicable.
Measures to avoid significant construction health risks impacts that could be included in projects, depending on the results of an HRA could include the following:
1. Use Tier 4 engines for all off-road equipment greater than 50 horsepower (hp) and operating for more than 20 total hours over the entire duration of construction activities.
2. Use diesel trucks with 2010 or later compliant model year engines during construction.
3. Use renewable diesel during construction.
4. Implement enhanced measures to control dust emissions, as recommended by BAAQMD.
5. Use portable electrical equipment where commercially available and practicable to complete construction. Construction contractors shall utilize electrical grid power instead of diesel generators when (1) grid power is available at the construction site; (2) when construction of temporary power lines are not necessary in order to provide power to portions of the site distant from existing utility lines; (3) when use of portable extension lines is practicable given construction safety and operational limitations; and (4) when use of electrical grid power does not compromise construction schedules. 38
GREENHOUSE GAS EMISSIONS
Setting
Gases that trap heat in the atmosphere, GHGs, regulate the earth’s temperature. This phenomenon, known as the greenhouse effect, is responsible for maintaining a habitable climate. The most common GHGs are carbon dioxide (CO2) and water vapor but there are also several others, most importantly methane (CH ), nitrous oxide (N O), hydrofluorocarbons (HFCs), perfluorocarbons 4 2 (PFCs), and sulfur hexafluoride (SF6). These are released into the earth’s atmosphere through a variety of natural processes and human activities. Sources of GHGs are generally as follows:
• CO , CH , and N O are byproducts of fossil fuel combustion. 2 4 2 • N2O is associated with agricultural operations such as fertilization of crops. • CH4 is commonly created by off-gassing from agricultural practices (e.g., keeping livestock) and landfill operations.
• Chlorofluorocarbons (CFCs) were widely used as refrigerants, propellants, and cleaning solvents but their production has been stopped by international treaty. • HFCs are now used as a substitute for CFCs in refrigeration and cooling. • PFCs and sulfur hexafluoride emissions are commonly created by industries such as aluminum production and semi-conductor manufacturing.
Each GHG has its own potency and effect upon the earth’s energy balance. This is expressed in terms of a global warming potential (GWP), with CO2 being assigned a value of 1 and sulfur hexafluoride being several orders of magnitude stronger. In GHG emission inventories, the weight of each gas is multiplied by its GWP and is measured in units of CO equivalents (CO e). 2 2 An expanding body of scientific research supports the theory that global climate change is currently affecting changes in weather patterns, average sea level, ocean acidification, chemical reaction rates, and precipitation rates, and that it will increasingly do so in the future. The climate and several naturally occurring resources within California are adversely affected by the global warming trend. Increased precipitation and sea level rise will increase coastal flooding, saltwater intrusion, and degradation of wetlands. Mass migration and/or loss of plant and animal species could also occur. Potential effects of global climate change that could adversely affect human health include more extreme heat waves and heat-related stress; an increase in climate-sensitive diseases; more frequent and intense natural disasters such as flooding, hurricanes, and drought; and increased levels of air pollution.
Federal and Statewide GHG Emissions
The U.S. EPA reported that in 2022, total gross nationwide GHG emissions were 5,215.6 million metric tons (MMT) carbon dioxide equivalent (CO2e).14 These emissions were lower than peak levels of 7,416 MMT that were emitted in 2007. CARB updates the statewide GHG emission 14 United States Environmental Protection Agency, 2022. Draft Inventory of U.S. Greenhouse Gas Emissions and Sinks 1990-2020. February. Web: https://www.epa.gov/ghgemissions/inventory-us-greenhouse-gas-emissions-andsinks 39
inventory on an annual basis where the latest inventory includes 2000 through 2020 emissions.15 In 2020, GHG emissions from statewide emitting activities were 369.2 MMT CO2e. The 2020 emissions have decreased by 25 percent since peak levels in 2004 and are 35.3 MMT CO2e lower than 2019 emissions level and almost 62 MMT CO2e below the State’s 2020 GHG limit of 431 MMT CO2e. Per capita GHG emissions in California have dropped from a 2001 peak of 13.8 MT CO e per person to 9.3 MT CO e per person in 2020. 2 2
Recent Regulatory Actions for GHG Emissions
Executive Order S-3-05 – California GHG Reduction Targets Executive Order (EO) S-3-05 was signed by Governor Arnold Schwarzenegger in 2005 to set GHG emission reduction targets for California. The three targets established by this EO are as follows:
(1) reduce California’s GHG emissions to 2000 levels by 2010, (2) reduce California’s GHG emissions to 1990 levels by 2020, and (3) reduce California’s GHG emissions by 80 percent below 1990 levels by 2050.
Assembly Bill 32 – California Global Warming Solutions Act (2006) Assembly Bill (AB) 32, the Global Warming Solutions Act of 2006, codified the State’s GHG emissions target by directing CARB to reduce the State’s global warming emissions to 1990 levels by 2020. AB 32 was signed and passed into law by Governor Schwarzenegger on September 27, 2006. Since that time, the CARB, CEC, California Public Utilities Commission (CPUC), and Building Standards Commission have all been developing regulations that will help meet the goals of AB 32 and Executive Order S-3-05, which has a target of reducing GHG emissions 85 percent below 1990 levels.
The first Scoping Plan for AB 32 was adopted by CARB in December 2008. Its most recent update was completed in December of 202216. It contains the State’s main strategies to achieve carbon neutrality by 2045. This plan extends and expands upon the earlier versions with a target of reducing anthropogenic emissions to 85 percent below 1990 levels by 2045. It also takes the step of adding carbon neutrality as a science-based guide and touchstone for California’s climate work.
Measures to achieve carbon neutrality include rapidly moving to zero emission vehicles (ZEV), removing natural gas as an option for space conditioning, increasing the number of solar arrays and wind turbines, and scaling up renewable hydrogen for hard-to-electrify end uses.
Senate Bill 375 – California's Regional Transportation and Land Use Planning Efforts (2008) California enacted legislation (SB 375) to expand the efforts of AB 32 by controlling indirect GHG emissions caused by urban sprawl. SB 375 provides incentives for local governments and applicants to implement new conscientiously planned growth patterns. This includes incentives for creating attractive, walkable, and sustainable communities and revitalizing existing communities. 15 CARB. 2022. California Greenhouse Gas Emission for 2000 to 2020. Web:
https://ww2.arb.ca.gov/sites/default/files/classic/cc/inventory/2000-2020_ghg_inventory_trends.pdf 16 CARB. 2022. Final 2022 Scoping Plan Update and Appendices. Web: https://ww2.arb.ca.gov/ourwork/programs/ab-32-climate-change-scoping-plan/2022-scoping-plan-documents 40
The legislation also allows applicants to bypass certain environmental reviews under CEQA if they build projects consistent with the new sustainable community strategies. Development of more alternative transportation options that would reduce vehicle trips and miles traveled, along with traffic congestion, would be encouraged. SB 375 enhances CARB’s ability to reach the AB 32 goals by directing the agency in developing regional GHG emission reduction targets to be achieved from the transportation sector for 2020 and 2035. CARB works with the metropolitan planning organizations (e.g., ABAG and MTC) to align their regional transportation, housing, and land use plans to reduce VMT and demonstrate the region's ability to attain its GHG reduction targets. A similar process is used to reduce transportation emissions of ozone precursor pollutants in the Bay Area.
Senate Bill 350 - Renewable Portfolio Standards
In September 2015, the California Legislature passed SB 350, which increases the states Renewables Portfolio Standard (RPS) for content of electrical generation from the 33 percent target for 2020 to a 50 percent renewables target by 2030.
Executive Order B-30-15 & Senate Bill 32 GHG Reduction Targets – 2030 GHG Reduction Target In April 2015, Governor Brown signed EO B-30-15, which extended the goals of AB 32, setting a GHG emissions target at 40 percent of 1990 levels by 2030. On September 8, 2016, Governor Brown signed Senate Bill (SB) 32, which legislatively established the GHG reduction target of 40 percent of 1990 levels by 2030. In November 2017, CARB issued California’s 2017 Climate Change Scoping Plan.
17 While the State is on track to exceed the AB 32 scoping plan 2020 targets, this plan is an update to reflect the enacted SB 32 reduction target.
SB 32 was passed in 2016, which codified a 2030 GHG emissions reduction target of 40 percent below 1990 levels. CARB has drafted a 2022 Scoping Plan Update to reflect the 2030 target set by Executive Order B-30-15 and codified by SB 32. The 2022 draft plan:
• Identifies a path to keep California on track to meet its SB 32 GHG reduction target of at least 40 percent below 1990 emissions by 2030.
• Identifies a technologically feasible, cost-effective path to achieve carbon neutrality by 2045 or earlier.
• Focuses on strategies for reducing California’s dependency on petroleum to provide consumers with clean energy options that address climate change, improve air quality, and support economic growth and clean sector jobs.
• Integrates equity and protecting California’s most impacted communities as a driving principle.
• Incorporates the contribution of natural and working lands to the state’s GHG emissions, as well as its role in achieving carbon neutrality.
• Relies on the most up to date science, including the need to deploy all viable tools, including carbon capture and sequestration as well a direct air capture. 17 California Air Resource Board, 2017. California’s 2017 Climate Change Scoping Plan: The Strategy for Achieving California’s 2030 Greenhouse Gas Targets. November. Web:
https://ww2.arb.ca.gov/sites/default/files/classic//cc/scopingplan/scoping_plan_2017.pdf 41
• Evaluates multiple options for achieving our GHG and carbon neutrality targets, as well as the public health benefits and economic impacts associated with each.
The Scoping Plan was updated in 2022 and lays out how the state can get to carbon neutrality by 2045 or earlier. It is the first Scoping Plan that adds carbon neutrality as a science-based guide and touchstone beyond statutorily established emission reduction targets.18 The mid-term 2030 target is considered critical by CARB on the path to obtaining an even deeper GHG emissions target of 80 percent below 1990 levels by 2050, as directed in Executive Order S3-05. The 2022 Scoping Plan outlines the suite of policy measures, regulations, planning efforts, and investments in clean technologies and infrastructure, providing a blueprint to continue driving down GHG emissions and to not only obtain the statewide goals, but cost-effectively achieve carbon-neutrality by 2045 or earlier. In the 2022 Scoping Plan, CARB recommends:
• VMT per capita reduced 12% below 2019 levels by 2030 and 22% below 2019 levels by 2045.
• 100% of Light-duty vehicle sales are zero emissions vehicles (ZEV) by 2035. • 100% of medium duty/heavy duty vehicle sales are ZEV by 2040. • 100% of passenger and other locomotive sales are ZEV by 2030. • 100% of line haul locomotive sales are ZEV by 2035.
• All electric appliances in new residential and commercial building beginning 2026 (residential) and 2029 (commercial).
• 80% of residential appliance sales are electric by 2030 and 100% of residential appliance sales are electric by 2035.
• 80% of commercial appliance sales are electric by 2030 and 100% of commercial appliance sales are electric by 2045.
SB 743 Transportation Impacts
Senate Bill 743 required lead agencies to abandon the old “level of service” metric for evaluating a project’s transportation impacts, which was based solely on the amount of delay experienced by motor vehicles. In response, the Governor’s Office of Planning and Research (OPR) developed a VMT metric that considered other factors such as reducing GHG emissions and developing multimodal transportation19. A VMT-per-capita metric was adopted into the CEQA Guidelines Section 15064.3 in November 2017. Given current baseline per-capita VMT levels computed by CARB in the 2030 Scoping Plan of 22.24 miles per day for light-duty vehicles and 24.61 miles per day for all vehicle types, the reductions needed to achieve the 2050 climate goal are 16.8 percent for light-duty vehicles and 14.3 percent for all vehicle types combined. Based on this analysis (as well as other factors), OPR recommended using a 15-percent reduction in per capita VMT as an appropriate threshold of significance for evaluating transportation impacts. 18 https://ww2.arb.ca.gov/our-work/programs/ab-32-climate-change-scoping-plan/2022-scoping-plan-documents 19 Governor’s Office of Planning and Research. 2018. Technical Advisory on Evaluating Transportation Impacts in CEQA. December.
42
Executive Order B-55-18 – Carbon Neutrality
In 2018, a new statewide goal was established to achieve carbon neutrality as soon as possible, but no later than 2045, and to maintain net negative emissions thereafter. CARB and other relevant state agencies are tasked with establishing sequestration targets and creating policies/programs that would meet this goal.
Senate Bill 100 – Current Renewable Portfolio Standards In September 2018, SB 100 was signed by Governor Brown to revise California’s RPS program goals, furthering California’s focus on using renewable energy and carbon-free power sources for its energy needs. The bill would require all California utilities to supply a specific percentage of their retail sales from renewable resources by certain target years. By December 31, 2024, 44 percent of the retails sales would need to be from renewable energy sources, by December 31, 2026 the target would be 40 percent, by December 31, 2027 the target would be 52 percent, and by December 31, 2030 the target would be 60 percent. By December 31, 2045, all California utilities would be required to supply retail electricity that is 100 percent carbon-free and sourced from eligible renewable energy resources to all California end-use customers.
California Building Standards Code – Title 24 Part 11 & Part 6 The California Green Building Standards Code (CALGreen Code) is part of the California Building Standards Code under Title 24, Part 11.20 The CALGreen Code encourages sustainable construction standards that involve planning/design, energy efficiency, water efficiency resource efficiency, and environmental quality. These green building standard codes are mandatory statewide and are applicable to residential and non-residential developments. The most recent CALGreen Code (2022 California Building Standard Code) was effective as of January 1, 2023.
The California Building Energy Efficiency Standards (California Energy Code) is under Title 24, Part 6 and is overseen by the California Energy Commission (CEC). This code includes design requirements to conserve energy in new residential and non-residential developments, while being cost effective for homeowners. This Energy Code is enforced and verified by cities during the planning and building permit process. The current energy efficiency standards (2022 Energy Code) replaced the 2019 Energy Code as of January 1,2023. Under the 2019 standards, single-family homes are predicted to be 53 percent more efficient than homes built under the 2016 standard due more stringent energy-efficiency standards and mandatory installation of solar photovoltaic systems. For nonresidential developments, it is predicted that these buildings will use 30 percent less energy due to lightening upgrades.21
Requirements for electric vehicle (EV) charging infrastructure are set forth in Title 24 of the California Code of Regulations. The CALGreen standards consist of a set of mandatory standards required for new development, as well as two more voluntary standards known as Tier 1 and Tier
2. The CalGreen 2022 standards require deployment of additional EV chargers in various building 20 See: https://www.dgs.ca.gov/BSC/Resources/Page-Content/Building-Standards-Commission-Resources-ListFolder/CALGreen#:~:text=CALGreen%20is%20the%20first%2Din,to%201990%20levels%20by%202020. 21 See: https://www.energy.ca.gov/sites/default/files/2020-03/Title_24_2019_Building_Standards_FAQ_ada.pdf 43
types, including multifamily residential and nonresidential land uses. They include requirements for both EV capable parking spaces and the installation of Level 2 EV supply equipment for multifamily residential and nonresidential buildings. The 2022 CALGreen standards include requirements for both EV readiness, installation of EV chargers, and include both mandatory requirements and more aggressive voluntary Tier 1 and Tier 2 provisions. Providing EV charging infrastructure that meets current CALGreen requirements will not be sufficient to power the anticipated more extensive level of EV penetration in the future that is needed to meet SB 30 climate goals.
CEC studies have identified the most aggressive electrification scenario as putting the building sector on track to reach the carbon neutrality goal by 2045.22 Installing new natural gas infrastructure in new buildings will interfere with this goal. To meet the State’s goal, communities have been adopting “Reach” codes that prohibit natural gas connections in new and remodeled buildings.
Advanced Clean Cars
The Advanced Clean Cars Program, originally adopted by CARB in 2012, was designed to bring together CARB’s traditional passenger vehicle requirements to meet federal air quality standards and also support California’s AB 32 goals to develop and implement programs to reduce GHG emissions back down to 1990 levels by 2020, a goal achieved in 2016 as a result of numerous emissions reduction programs.
Advanced Clean Cars II (ACC II) is phase two of the original rule. ACC II establishes a year-byyear process, starting in 2026, so all new cars and light trucks sold in California will be zeroemission vehicles by 2035, including plug-in hybrid electric vehicles. The regulation codifies the light-duty vehicle goals set out in Governor Newsom’s Executive Order N-79-20. Currently, 16 percent of new light-duty vehicles sold in California are zero emissions or plug-in hybrids. By 2030, 68 percent of new vehicles sold in California would be zero emissions and 100 percent by 2035.
Peninsula Clean Energy
The default electricity provider in Atherton is Peninsula Clean Energy. Residential customers could opt out for PG&E or choose carbon-free option. The default choice of ECOplus is 100 percent renewable and cost-competitive with PG&E. The CO2 intensity rate for Peninsula Clean Energy’s ECOplus was 9 pounds of CO2e per megawatt of delivered electricity.23 Atherton Climate Action Plan
The Atherton Climate Action Plan, adopted in November 2016, includes goals and measures to reduce exposure of the Town’s sensitive population to exposure of air pollution and toxic air contaminants or TACs. The Climate Action Plan is designed to place Atherton on a path to achieve 22 California Energy Commission. 2021. Final Commission Report: California Building Decarbonization Assessment. Publication Number CEC-400-2021-006-CMF.August 23 2022 CO2 Intensity Rate reported by Peninsula Clean Energy: Power mix - Peninsula Clean Energy 44
at least a 17% reduction in emissions below 2005 levels by 2020. While the Climate Action Plan in its current form does not put Atherton on course to achieve a 49% reduction in emissions below 2005 levels by 2030 in accordance with the State’s goal, the Town will continue to explore new measures over the coming years that work towards achieving this ultimate goal. The following goals and measures relevant to air quality are contained in Sections 3.1.1, 3.2.1, and 3.3.1.
Section 3.1.1 Goal: Increase residential and commercial energy efficiency and reduce water consumption to meet AB 32 emission reduction target.
Measures:
EC1. Voluntary residential green building ordinance for new construction- Promote voluntary building code of zero net energy for new residential buildings. Encourage achievement of CALGreen Tier 2 energy performance and the CALGreen recommendation to install electric vehicle supply equipment. Encourage planting of shade trees for new construction with eastern, southern or western exposure, when feasible.
EC2. Incorporate available Energy Upgrade programs and similar rebate - The City will consider a Residential Energy Conservation Program to increase energy efficiency and water conservation through professional home energy audits. The Program may include recognition awards, a Residential Energy and Water Efficiency Checklist, public outreach, and expanded promotion of rebates/programs funded through PG&E and other organizations among other features.
EC3. Implement program for residential shade trees- Education and outreach to encourage existing homes to plant deciduous shade trees for houses with eastern, western or southern exposures that heat up during the summer and create alternatives as to not conflict with the priority installation of solar panels. Leverage the services of the Atherton Tree Committee to assist in planting of trees.
EC4. Voluntary commercial green building ordinance for new construction and major additions - Encourage use of green building code to achieve higher building performance in new commercial buildings or major additions to commercial buildings.
Promote achievement of Net Zero Energy standards.
EC5. Promote PG&E commercial energy efficiency/demand response programs - The Town will promote and assist with marketing and outreach for PG&E energy efficiency and demand response programs. Leverage existing rebates/add additional rebates for energy efficient retrofits.
EC6. Community Choice Aggregation (CCA) - The Town is part of the Peninsula Clean Energy (PCE) Community Choice Aggregation (CCA) Program. Enabled by California legislation (AB117), Community Choice Aggregation (CCA) allows local governments to purchase and generate power to sell to residential and business customers. The Town has opted for the ECO100 option (100% renewable energy) for all Town facilities. 45
EM2. Environmentally preferred purchasing policy – Energy – Implement a sustainable purchasing policy that emphasizes ENERGY STAR equipment.
EM3. Renewable energy installation on municipal property - Review and consider installation of solar or other renewable energy projects at Town facilities. Implement where practical and financially feasible. Consider installation of electric car charging stations at Town facilities and provide plug-in areas, where feasible. Conduct an initial feasibility study to set a goal for on-site renewable projects.
EM4. Energy efficiency in municipal buildings - Encourage all new Town facilities be built to Net Zero Energy if financially feasible and where practical. Audit older Town facilities for energy efficiency opportunities and implement energy efficient retrofits if financially feasible. Town participate in San Mateo County Energy Watch and leverage benchmarking to identify opportunities for EE upgrades and tracking energy performance.
Leverage other programs that provide funding.
WTRC1. Water conservation incentives - Make concerted effort to promote and expand the distribution of existing and/or new rebates for water efficient appliances and fixtures.
Encourage landscape/irrigation professionals to participate in community landscape conservation and water efficient landscaping workshops.
WTRC2. Water conservation ordinance - Adopt Bay Area Water Supply and Conservation Agency (BAWSCA) Indoor Ordinance and Outdoor Ordinance if haven't already and enhance BAWSCA Outdoor Ordinance (all cities required to adopt).
WTRC3. Voluntary water conservation programs - Make concerted effort to promote and educate the community on water recapture efforts and how to implement them such as rain barrels, permeable pavement and gray water systems.
Section 3.2.1 Goal: Allow for changes in the traditional transportation system to reduce vehicle miles traveled and the modes of transportation types to meet AB 32 emission reduction target.
Measures:
TRC1. Implement the Town’s Bike Pedestrian Master Plan to create a walkable/bikeable street landscape - Remake sub-urban landscape to make walking and biking more desirable. Bike lanes, bike parking, traffic calming, beautification, etc. Install new bicycle racks outside Town Hall.
TRC2. Fund and implement Bike Master Plan priorities and make having safe routes to school a Town priority - Work with Safe Routes to Schools program to ensure that our plan to develop safe bike and pedestrian routes will work; provide bike safety programs to encourage active transportation for students where practical and feasible. 46
TRM2. Flexible schedules - Where feasible, establish alternative work schedules and telecommuting to reduce employee commute. Continue to support housing options to encourage off-duty police officers or other Town employees to stay overnight near the Town Center, where feasible and need dependent.
TRM3. Explore Town participation in County-wide rideshare or bus program – Explore Town participation in county-wide ride share or bus program for public employee commuting.
Section 3.3.1 Goal: Reduce the total amount of community waste generated and sent to landfills to meet AB 32 emission reduction target.
Measures:
WC1. Set higher community waste diversion goal - Increase participation in recycling programs and ensure weekly collection of recyclables and organic waste to achieve 86% diversion rate (increase from 71.8% diversion rate in 2010).
WC2. Require commercial recycling through mandatory ordinance - Provide outreach, education and training to commercial customers and schools to support recycling habits and understanding. All businesses and entities that generate four or more cubic yards of garbage per weeks are required to recycle under California law. Commercial customers subscribed to Recology's garage collection services receive recycling and compost collection for no additional cost.
WC3. Promotion of recycling/diversion of yard waste - Encourage the recycling/diversion of yard waste by landscapers and landscape maintenance businesses.
Comply with updates to the California Integrated Waste Management Act requiring businesses to recycle organic waste by 2016. Provide residents, businesses and private schools with food scraps collection. Explore incentives for local composting of these organics.
WM1. Create Sustainable Vendor Policy for public events - Encourage recycling at major public events (including at schools) of cardboard, paper, containers and food/organics. Encourage use of recyclable silverware and food take-out packaging.
Ensure provision of proper landfill, recycling and organic bins.
WM2. Environmentally preferred purchasing policy – Waste reduction - Implement a sustainable purchasing policy that emphasizes recycled materials.
WM3. Approach a zero waste policy in government operations – Government Policy to improve diversion in Town operations by 2020/2030.
47
BAAQMD GHG Significance Thresholds
On April 20, 2022, BAAQMD adopted new thresholds of significance for operational GHG emissions from land use projects for projects beginning the CEQA process. The current thresholds of significance are:
A. Projects must include, at a minimum, the following project design elements:
a. Buildings
i. The project will not include natural gas appliances or natural gas plumbing (in both residential and non-residential development).
ii. The project will not result in any wasteful, inefficient, or unnecessary energy usage as determined by the analysis required under CEQA Section 21100(b)(3) and Section 15126.2(b) of the State CEQA Guidelines.
b. Transportation
i. Achieve a reduction in project-generated vehicle miles traveled (VMT) below the regional average consistent with the current version of the California Climate Change Scoping Plan (currently 15 percent) or meet a locally adopted Senate Bill 743 VMT target, reflecting the recommendations provided in the Governor’s Office of Planning and Research’s Technical Advisory on Evaluating Transportation Impacts in CEQA:
1. Residential Projects: 15 percent below the existing VMT per capita
2. Office Projects: 15 percent below the existing VMT per employee
3. Retail Projects: no net increase in existing VMT
ii. Achieve compliance with off-street electric vehicle requirements in the most recently adopted version of CALGreen Tier 2.
B. Be consistent with a local GHG reduction strategy that meets the criteria under State CEQA Guidelines Section 15183.5(b).
New land use projects are required to meet either section A or B from the above list, not both, to be considered less than significant.
Impact GHG-1: Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment?
While the proposed Housing Element Update and resulting zoning code amendments will not result in the direct construction of housing, development of specific projects could occur as a result of the project and are considered under CEQA for air quality and GHG impacts. GHG emissions associated with development of the proposed projects built under the Housing Element would occur over the short-term from construction activities, consisting primarily of emissions from equipment exhaust and worker and vendor trips. There would also be long-term emissions associated with vehicular traffic within the project vicinity, energy and water usage, and solid waste disposal. GHG emissions for the Housing Element Update buildout are discussed below and were analyzed using the methodology recommended in the BAAQMD CEQA Air Quality Guidelines.
48
CalEEMod Modeling
CalEEMod was used to predict GHG emissions assuming full build-out of the projects under the Housing Element Update. The project land use types and size and other project-specific information were input to the model, as described above within the operational period emissions.
CalEEMod output is included in Attachment 1.
Buildout Emissions
The CalEEMod model along with the vehicle trip generation rates and VMT for the Housing Element Update were used to estimate daily emissions. As shown in Table 14, the net annual emissions resulting from build-out of new housing are predicted to be 27,604 MT of CO2e when the buildout scenario is completed in 2031. In terms of GHG per capita emissions, there would be a decrease.
The emissions forecast presented in Table 14 are based on current accepted modeling methods that include use of EMFAC2021 mobile emission factors, current solid waste generation rates and processing, and current emissions associated with energy and water usage.
Mobile emissions are currently modeled to make up about 67 percent of existing emissions and 69 percent in 2031. The modeling of these emissions are based on the use of EMFAC2021 that does not include California’s latest Advanced Clean Cars and Advanced Clean Trucks regulations.
These regulations along with future reformulated fuel standards will reduce mobile emissions substantially. Additionally, new rules and regulations are likely to be adopted in the future, prior to 2035, that would reduce mobile emissions.
Energy is the second highest source of GHG emissions, at about 27 percent of future emissions.
These emissions were predicted based on the current emission factor rate of 100 pounds of CO2 per megawatt of electricity produced which is based on Peninsula Clean Energy 2022 emissions rate assigned by CalEEMod. The CO2 intensity rate for Peninsula Clean Energy’s ECOplus is 9 pounds of CO2e per megawatt of delivered electricity and both rates are predicted to be near zero in the future.24
Solid waste is the third highest source of GHG emissions, at about 3 percent of future emissions.
These emissions were predicted based on current rates assigned by CalEEMod. GHG emissions associated with solid waste generation are predicted based on the transportation and processing of the waste stream. New measures to reduce solid waste, reducing emissions from hauling of solid waste and reuse of methane generated can greatly reduce these emissions.
Emissions associated with water usage make up about 1 percent of total GHG emissions. These emissions are likely to be reduced through greater water conservation efforts, use of recycled water available in the area for outdoor water usage, and the use of electricity generated from carbon-free sources.
24 2022 CO2 Intensity Rate reported by Peninsula Clean Energy: Power mix - Peninsula Clean Energy 49
There are no quantified thresholds for GHG emissions adopted by the Town or BAAQMD for evaluation of plan level GHG emissions. BAAQMD in their latest adopted GHG thresholds recommend that the significance of project level GHG emissions be evaluated based on consistency with a qualified GHG reduction plan or meet design elements that are critical in reducing GHG emissions.
Table 14. Annual Plan GHG Emissions (CO2e) in Metric Tons and Per Capita Existing
2023
Housing Element
Update Buildout Housing Element
Increase in 2031 Source Category
in 2031
18,999
87 Mobile1
Area
15,779
75 5,683
11 Energy Consumption
Water Usage
6,993
153
562
39 7,554
193
Solid Waste Generation 565
23,566
209
6,502
771
Net Total (MT CO2e/year) 27,604
Per Capita Emissions (MT
CO2e/year/capita) 3.53 3.17 3.16
* Does not include effects of Advanced Clean Cars II that will phase out the sale of combustion emission vehicles by 2035.
Impact GHG-2: Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases ? Plan Consistency
The Housing Element Update and resulting zoning amendments would allow the addition of more housing. BAAQMD has thresholds that address both Projects and long-range plans, such as General Plans. Projects constructed under the proposed Housing Element Update and resulting zoning code amendments would have to meet BAAQMD project-level significance thresholds or meet State’s goals to reduce emissions to 40% below 1990 levels by 2030 and carbon neutrality by 2045. Note that the Town has not adopted a GHG reduction strategy that is consistent with current State goals or that meets the criteria under State CEQA Guidelines Section 15183.5(b).
To meet the BAAQMD’s GHG thresholds, residential projects would be required to demonstrate the following:
1. Avoid construction of new natural gas connections:
Project does not conform – the Town does not have measures or building code sections prohibiting new natural gas infrastructure in new or remodeled residences.
2. Avoid wasteful or inefficient use of electricity:
Project Conforms – the new housing projects would be required would meet CALGreen Building Standards Code requirements that are considered to be energy efficient.
3. Include electric vehicle (EV) charging infrastructure that meets current Building Code CALGreen Tier 2 compliance,
Project does not conform – the Town does not have measures that require new residential projects to include electric vehicle charging infrastructure that meets or exceeds current Building Code CALGreen Tier 2 compliance. 50
4. Reduce VMT or meet a locally adopted Senate Bill 743 VMT target that reflects the recommendations provided in the Governor’s Office of Planning and Research's (OPR) Technical Advisory: Evaluating Transportation Impacts in CEQA.
Projects not applicable to VMT threshold or meet the threshold The Town of Atherton has not formally adopted a VMT policy, therefore, the Town’s VMT analysis is based on OPR’s guidelines. These guidelines include screening criteria. Most housing sites would generate new vehicle trips below the screening threshold of 110 trip per day. Projects that screen out include:
• ADUs,
• SB 9 units,
• Vacant Sites,
• 23 Oakwood Blvd.,
• 150 Valparaiso,
• Gilmore House, and
• CA Water Service.
The multi-family sites that could generate more than 110 trips per day are within ½ mile of a CalTrain station, which is considered a “high quality transit corridor” and would meet OPR screening criteria include:
• 1000 El Camino Real and
• 50 Valparaiso.
Proposed projects at 175, 185, and 197 Ravenswood Ave are in an area with low VMT.
The VMT per resident for those parcels is 7.7 to 10.4 VMT per resident, which is less than the Bay Area regional threshold of 12.4 daily VMT per resident.
Projects that do Not Screen Out
Projects proposed at 999 Ringwood Avenue, 352, 318, and 296 Bay Road are located in an area where the existing VMT is 13.0 daily VMT per resident, which is above the established threshold of 12.4 daily VMT per resident and would not meet the VMT criteria.
Conclusion: The zoning amendment projects do not fully comply with requirements of BAAQMD’s GHG thresholds but are currently only anticipated to conform with one requirement.
This would lead to a significant impact for the Amendment’s GHG emissions. The implementation of Mitigation Measure GHG-1 would require the housing projects under the proposed Amendment to conform to the requirements, therefore leading to a less than significant GHG impact.
Mitigation Measure GHG-1:
1. Require all new or remodeled housing to use all-electric appliances and have no natural gas infrastructure.
51
2. Require all new housing to include electric vehicle charging infrastructure that meets or exceeds current Building Code CALGreen Tier 2 compliance.
3. Implement the VMT Mitigation measure for proposed projects in the “high-VMT area” that do not meet other screening requirements (i.e., generate less than 110 trips per day or located within a high-quality transit corridor). The TDM measure is described in the Atherton HEU Transportation Analysis, prepared by Hexagon, dated February 13, 2024. 52
Supporting Documentation
Attachment 1 includes the CalEEMod output for project construction and operational criteria air pollutants. Also included are any modeling assumptions.
Attachment 2 includes the cumulative health risk screening impacts from sources affecting the proposed future Amendment areas.
Attachment 3 is the construction health risk assessment. This includes the summary of the dispersion modeling and the cancer risk calculations for construction. AERMOD dispersion modeling files for this assessment, which are quite voluminous, are available upon request and would be provided in digital format.
53
Attachment 1: CalEEMod Modeling Inputs and Outputs
Existing 2023 Operational Criteria Air Pollutants Housing Element 2031 Operational Criteria Air Pollutants Housing Element 2031 + Existing Operational Criteria Air Pollutants Unmitigated
Year
ROG
28.11 28.11
10.0 NOX Total PM10
16.11 Total PM2.5
4.49 Unmitigated
Year
ROG
9.02 9.02
10.0 NOX
1.83 Total PM10
6.36 Total PM2.5
1.63 Unmitigated
Year
ROG
34.31 34.31
10.0 NOX Total PM10
21.69 Total PM2.5
5.90 Tons Tons Tons
Total 12.90 Total Total 11.60
Net Annual Operational Emissions Net Annual Operational Emissions Net Annual Operational Emissions Tons/year 12.90 16.11 4.49 Tons/year 1.83 6.36 1.63 Tons/year 11.60 21.69 5.90 Threshold ‐ Tons/year 10.0 15.0 10.0 Threshold ‐ Tons/year 10.0 15.0 10.0 Threshold ‐ Tons/year 10.0 15.0 10.0 Average Daily Emissions Average Daily Emissions Average Daily Emissions Pounds Per Day
Threshold ‐ lbs/day
Category
154.05 70.71 88.29 24.60 Pounds Per Day
Threshold ‐ lbs/day
Category
49.44 10.01 34.83 8.94 Pounds Per Day
Threshold ‐ lbs/day
Category
188.02 63.59 118.84 32.30
54.0 54.0 82.0 54.0 54.0 54.0 82.0 54.0 54.0 54.0 82.0 54.0 CO2e CO2e CO2e
Project Project Project
Mobile
Area
15779.47
75.49 Mobile
Area
5682.65
11.30 Mobile
Area
18998.85
86.78 Energy
Water
Waste
Refrig.
TOTAL
6992.76
153.44
564.57
4.43 Energy
Water
Waste
Refrig.
TOTAL
561.70
39.27 206.75
1.50 Energy
Water
Waste
Refrig.
TOTAL
7554.46
192.71
771.33
5.93 23570.17 0.00 0.00 0.00
0.00 6503.17 0.00 0.00 0.00
0.00 27610.06 0.00 0.00 0.00
Net GHG Emissions 23570.17 Net GHG Emissions 6503.17 Net GHG Emissions 27610.06 0.00
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 23-116 Atherton Existing 2023 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
2.4. Operations Emissions Compared Against Thresholds
2.5. Operations Emissions by Sector, 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
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23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
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
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 2 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
5. Activity Data
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
5.14. Operational Refrigeration and Air Conditioning Equipment
5.14.1. Unmitigated
5.15. Operational Off-Road Equipment
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23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
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
6.3. Adjusted Climate Risk Scores
6.4. Climate Risk Reduction Measures
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23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
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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23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
1. Basic Project Information
1.1. Basic Project Information
Data Field Value
Project Name
Operational Year
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
23-116 Atherton Existing 2023
2023
—
Project/site
County
4.20 18.8
Atherton, CA, USA
County San Mateo
City Atherton
Air District Bay Area AQMD
San Francisco Bay Area
1277
Air Basin
TA Z
EDFZ 1
Electric Utility
Gas Utility
Peninsula Clean Energy
Pacific Gas & Electric
App Version 2022.1.1.21
1.2. Land Use Types
Land Use Subtype Size Unit Lot Acreage
827
Building Area (sq ft) Landscape Area (sq Special Landscape Population 7,335
Description
—
ft) Area (sq ft)
Single Family
Housing
2,547 Dwelling Unit 3,740,000 29,832,647 —
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23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected
2. Emissions Summary
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. ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Unmit. 163 75.6
—
3.76 —
86.3 —
90.0 —
3.70 —
21.9 —
25.6 —
157,332
Daily, Winter (Max) — —
Unmit. 149 80.6
—
3.68 —
86.3 —
90.0 —
3.64 —
21.9 —
25.5 —
152,321
Average Daily —
(Max)
—
Unmit. 154
—
70.7 —
3.05 —
85.2 —
88.3 —
3.00 —
21.6 —
24.6 —
142,365
Annual (Max) —
Unmit. 28.1 12.9 0.56 15.6 16.1 0.55 3.94 4.49 23,570
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Mobile
Area
53.2 108
1.74 —
36.0 9.91
29.7 —
0.60 0.76
2.40 —
86.3 —
86.9 0.76
2.40 —
0.55 0.74
2.40 —
21.9 —
22.4 0.74
2.40 —
99,607
11,125
42,237
927
Energy
Water
— —
— —
7 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Waste
Refrig.
Total
— — — — — — — — 3,410
— — — — — — — — 26.8
163 75.6
—
3.76 —
86.3 —
90.0 —
3.70 —
21.9 —
25.6 —
157,332
Daily, Winter (Max) — —
Mobile
Area
52.1 42.5
8.45 29.7
—
0.60 0.68
2.40 —
86.3 —
86.9 0.68
2.40 —
0.55 0.68
2.40 —
21.9 —
22.4 0.68
2.40 —
94,984
10,737
42,237
927
95.0 1.74
—
Energy
Water
Waste
Refrig.
Total
— —
— —
— — — — — — — — 3,410
— — — — — — — — 26.8
149
—
80.6 —
3.68 —
86.3 —
90.0 —
3.64 —
21.9 —
25.5 —
152,321
Average Daily —
Mobile
Area
51.2 101
1.74 —
40.1 0.93
29.7 —
0.60 0.06
2.40 —
85.2 —
85.8 0.06
2.40 —
0.55 0.05
2.40 —
21.6 —
22.1 0.05
2.40 —
95,309
456
Energy
Water
Waste
Refrig.
Total
— — 42,237
— — 927
— — — — — — — — 3,410
— — — — — — — — 26.8
154
—
70.7 —
3.05 —
85.2 —
88.3 —
3.00 —
21.6 —
24.6 —
142,365
Annual —
Mobile
Area
9.34 18.5
0.32 —
7.31 0.17
5.42 —
0.11 0.01
0.44 —
15.6 —
15.7 0.01
0.44 —
0.10 0.01
0.44 —
3.94 —
4.04 0.01
0.44 —
15,779
75.5 Energy
Water
Waste
Refrig.
Total
— — 6,993
— — 153
— — — — — — — — 565
— — — — — — — — 4.43
28.1 12.9 0.56 15.6 16.1 0.55 3.94 4.49 23,570
8 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
53.2 36.0 0.60 86.3 86.9 0.55 21.9 22.4 99,607
Total 53.2 36.0
—
0.60 —
86.3 —
86.9 —
0.55 —
21.9 —
22.4 —
99,607
Daily, Winter (Max) — —
Single Family
Housing
52.1 42.5 0.60 86.3 86.9 0.55 21.9 22.4 94,984
Total 52.1
—
42.5 —
0.60 —
86.3 —
86.9 —
0.55 —
21.9 —
22.4 —
94,984
Annual —
Single Family
Housing
9.34 7.31 0.11 15.6 15.7 0.10 3.94 4.04 15,779
Total 9.34 7.31 0.11 15.6 15.7 0.10 3.94 4.04 15,779
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
9 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Single Family
Housing
—
—
— — — — — — — 4,402
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4,402
Daily, Winter (Max) — —
Single Family
Housing
— 4,402
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4,402
Annual —
Single Family
Housing
729
Total — — — — — — — — 729
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
1.74 1.74
29.7 2.40 — 2.40 2.40 — 2.40 37,834
Total 29.7
—
2.40 —
—
—
—
2.40 —
2.40 —
—
—
—
2.40 —
37,834
Daily, Winter (Max) — —
Single Family
Housing
1.74 29.7 2.40 2.40 2.40 2.40 37,834
Total 1.74
—
29.7 —
2.40 —
—
—
—
2.40 —
2.40 —
—
—
—
2.40 —
37,834
Annual —
Single Family
Housing
0.32 5.42 0.44 0.44 0.44 0.44 6,264
Total 0.32 5.42 0.44 — 0.44 0.44 — 0.44 6,264
10 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
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) Source ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Hearths 0.49
80.0 8.45
—
0.68 —
—
—
0.68 —
0.68 —
—
—
0.68 —
10,737
Consumer —
Products
Architectural
Coatings
14.4 13.5
108
— — —
—
— — —
—
— —
Landscape
Equipment
1.46 0.08 0.08 0.06 0.06 388
Total 9.91
—
0.76 —
—
—
—
—
0.76 —
0.74 —
—
—
—
—
0.74 —
11,125
Daily, Winter (Max) — —
Hearths 0.49 8.45
—
0.68 —
0.68 —
0.68 —
0.68 —
10,737
Consumer —
Products
80.0 Architectural
Coatings
14.4 — — — — — — — —
Total 95.0
—
8.45 —
0.68 —
—
—
—
—
0.68 —
0.68 —
—
—
—
—
0.68 —
10,737
Annual —
Hearths < 0.005
14.6 0.04
—
< 0.005
—
< 0.005
—
< 0.005
—
< 0.005
—
43.8 Consumer —
Products
Architectural
Coatings
2.63 1.22
18.5 — — —
—
—
— — —
—
—
— —
Landscape
Equipment
0.13 0.17
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
31.7 Total 75.5
11 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
—
—
— — — — — — — 927
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
927
Daily, Winter (Max) — —
Single Family
Housing
— 927
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
927
Annual —
Single Family
Housing
153
Total — — — — — — — — 153
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3,410
Total 3,410
12 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Daily, Winter (Max) — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Single Family
Housing
— 3,410
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3,410
Annual —
Single Family
Housing
565
Total — — — — — — — — 565
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
—
—
— — — — — — — 26.8
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
26.8 Daily, Winter (Max) — —
Single Family
Housing
— 26.8
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
26.8 Annual —
Single Family
Housing
4.43 Total — — — — — — — — 4.43
4.7. Offroad Emissions By Equipment Type
13 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
4.7.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipment Type ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
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) Equipment Type ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
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) 14 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Equipment Type ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
—
—
Annual
Total
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) Vegetation ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — — — — — — — — —
15 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Daily, Winter (Max) — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Total —
—
—
Annual
Total
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
Annual
Avoided
Subtotal
16 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
5. Activity Data
5.9. Operational Mobile Sources
5.9.1. Unmitigated
Land Use Type Trips/Weekday
17,651
Trips/Saturday
17,651
Trips/Sunday
17,651
Trips/Year
6,442,509
VMT/Weekday
122,672
VMT/Saturday
122,672
VMT/Sunday
122,672
VMT/Year
Single Family
Housing
44,775,439
5.10. Operational Area Sources
5.10.1. Hearths
5.10.1.1. Unmitigated
Hearth Type Unmitigated (number)
Single Family Housing
Wood Fireplaces
Gas Fireplaces
—
0 509
Propane Fireplaces 0
Electric Fireplaces
No Fireplaces
0 2038
Conventional Wood Stoves 0
17 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Catalytic Wood Stoves
Non-Catalytic Wood Stoves
Pellet Wood Stoves
0 0
0 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 Parking Area Coated (sq ft) (sq ft)
7573500 2,524,500 0.00 0.00 —
5.10.3. Landscape Equipment
Season Unit Value
0.00 180
Snow Days
Summer Days
day/yr
day/yr
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)
15,752,831
CO2 CH4 N2O Natural Gas (kBTU/yr)
Single Family Housing 100.0 0.0330 0.0040 117,727,236
5.12. Operational Water and Wastewater Consumption
5.12.1. Unmitigated
Land Use Indoor Water (gal/year)
92,370,521
Outdoor Water (gal/year)
Single Family Housing 302,277,741
18 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
5.13. Operational Waste Generation
5.13.1. Unmitigated
Land Use Waste (ton/year)
1,809
Cogeneration (kWh/year)
Single Family Housing —
5.14. Operational Refrigeration and Air Conditioning Equipment
5.14.1. Unmitigated
Land Use Type Equipment Type Refrigerant
R-410A
GWP
2,088
Quantity (kg)
< 0.005
Operations Leak Rate
2.50 Service Leak Rate
2.50 Times Serviced
Single Family Housing Average room A/C & 10.0
Other residential A/C
and heat pumps
Single Family Housing Household refrigerators R-134a
and/or freezers
1,430 0.12 0.60 0.00 1.00
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 Year Horsepower Load Factor
5.16.2. Process Boilers
19 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 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. 20 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Climate Hazard Result for Project Location Unit
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
9.82 6.25
—
annual days of extreme heat
annual days with precipitation above 20 mm
meters of inundation depth
Wildfire 9.53 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 observed 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 received 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
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score N/A
N/A
N/A
N/A
N/A
N/A
N/A
0 N/A
N/A
N/A
N/A
N/A
N/A
N/A
0 N/A
N/A
N/A
N/A
N/A
N/A
N/A
0 N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Wildfire
Flooding
Drought
Snowpack Reduction
Air Quality Degradation
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 greatest 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. 21 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024
6.3. Adjusted Climate Risk Scores
Climate Hazard
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score N/A
N/A
N/A
N/A
N/A
N/A
N/A
1 N/A
N/A
N/A
N/A
N/A
N/A
N/A
1 N/A
N/A
N/A
N/A
N/A
N/A
N/A
1 N/A
N/A
N/A
N/A
N/A
N/A
N/A
2 Wildfire
Flooding
Drought
Snowpack Reduction
Air Quality Degradation
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 greatest 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
—
10.6 12.8
41.4 35.4
52.9 AQ-PM
AQ-DPM
Drinking Water
Lead Risk Housing
22 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Pesticides 0.00
26.2 23.8
—
Toxic Releases
Traffic
Effect Indicators
CleanUp Sites
Groundwater
79.7 75.0
72.7 0.00
66.7 —
Haz Waste Facilities/Generators
Impaired Water Bodies
Solid Waste
Sensitive Population
Asthma 1.33
0.65 6.51
—
Cardio-vascular
Low Birth Weights
Socioeconomic Factor Indicators
Education 3.87
1.05 23.8
0.26 40.6
Housing
Linguistic
Poverty
Unemployment
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
Employed
Median HI
97.6774028
30.82253304
99.46105479
23 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Education —
Bachelor's or higher
High school enrollment
Preschool enrollment
Transportation
99.16591813
17.87501604
95.7141024
—
Auto Access 89.83703323
40.87001155
—
Active commuting
Social
2-parent households
Voting
78.6603362
93.67380983
Neighborhood —
Alcohol availability
Park access
77.22314898
34.87745413
37.26421147
36.18632106
97.62607468
—
Retail density
Supermarket access
Tree canopy
Housing
Homeownership
Housing habitability
Low-inc homeowner severe housing cost burden
Low-inc renter severe housing cost burden
Uncrowded housing
Health Outcomes
Insured adults
99.9101758
96.03490312
41.01116387
90.2219941
91.95431798
—
99.67919928
Arthritis 0.0
Asthma ER Admissions
High Blood Pressure
95.1 0.0
24 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Cancer (excluding skin)
Asthma
0.0 0.0
Coronary Heart Disease
Chronic Obstructive Pulmonary Disease
Diagnosed Diabetes
Life Expectancy at Birth
Cognitively Disabled
Physically Disabled
Heart Attack ER Admissions
Mental Health Not Good
Chronic Kidney Disease
Obesity
0.0 0.0
0.0 99.3
70.6 80.2
98.4 0.0
0.0 0.0
Pedestrian Injuries
Physical Health Not Good
Stroke
19.6 0.0
0.0 Health Risk Behaviors
Binge Drinking
—
0.0 Current Smoker 0.0
No Leisure Time for Physical Activity
Climate Change Exposures
Wildfire Risk
0.0 —
0.0 SLR Inundation Area
Children
0.0 65.5
11.5 89.7
40.9 98.2
Elderly
English Speaking
Foreign-born
Outdoor Workers
25 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Climate Change Adaptive Capacity
Impervious Surface Cover
Traffic Density
—
92.9 25.7
48.8 —
Traffic Access
Other Indices
Hardship 0.0
Other Decision Support —
2016 Voting 89.5
7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a) 1.00
99.0 No
Healthy Places Index Score for Project Location (b)
Project Located in a Designated Disadvantaged Community (Senate Bill 535) Project Located in a Low-Income Community (Assembly Bill 1550) Project Located in a Community Air Protection Program Community (Assembly Bill 617) No
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
26 / 27
23-116 Atherton Existing 2023 Detailed Report, 1/3/2024 Screen Justification
Characteristics: Utility Information
Land Use
Atherton default clean energy provider is Peninsula Clean Energy. 2,547 single family homes.
Operations: Vehicle Data
Operations: Water and Waste Water
Provided trip rate is 6.93 and provided Mi per trip is 6.95.
Wastewater treatment 100% aerobic - no septic tanks or lagoons. 27 / 27
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 23-116 Atherton Housing Element Increase 2031 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
2.4. Operations Emissions Compared Against Thresholds
2.5. Operations Emissions by Sector, 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
1 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024
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
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 2 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024
5. Activity Data
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
5.14. Operational Refrigeration and Air Conditioning Equipment
5.14.1. Unmitigated
5.15. Operational Off-Road Equipment
3 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024
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
6.3. Adjusted Climate Risk Scores
6.4. Climate Risk Reduction Measures
4 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024
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
5 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024
1. Basic Project Information
1.1. Basic Project Information
Data Field Value
Project Name
Operational Year
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
23-116 Atherton Housing Element Increase 2031
2031
—
Project/site
County
4.20 18.8
Atherton, CA, USA
County San Mateo
City Atherton
Air District Bay Area AQMD
San Francisco Bay Area
1277
Air Basin
TA Z
EDFZ 1
Electric Utility
Gas Utility
Peninsula Clean Energy
Pacific Gas & Electric
App Version 2022.1.1.21
1.2. Land Use Types
Land Use Subtype Size
572
Unit Lot Acreage
35.8 Building Area (sq ft) Landscape Area (sq Special Landscape Population 1,647
Description
—
ft) Area (sq ft)
Apartments Low
Rise
Dwelling Unit 606,320 0.00 —
6 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Single Family
Housing
337 Dwelling Unit 109 657,150 3,947,233 — 971 —
1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected
2. Emissions Summary
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. ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Unmit. 52.2 9.25
—
0.18 —
35.1 —
35.3 —
0.16 —
8.89 —
9.05 —
40,794
Daily, Winter (Max) — —
Unmit. 47.5 10.4
—
0.16 —
35.1 —
35.2 —
0.15 —
8.89 —
9.04 —
39,125
Average Daily —
(Max)
—
Unmit. 49.4
—
10.0 —
0.17 —
34.7 —
34.8 —
0.16 —
8.78 —
8.94 —
39,280
Annual (Max) —
Unmit. 9.02 1.83 0.03 6.33 6.36 0.03 1.60 1.63 6,503
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Mobile
Area
15.8 36.4
8.77 0.48
0.16 0.02
35.1 —
35.2 0.02
0.15 0.02
8.89 —
9.04 0.02
35,768
138
7 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Energy
Water
Waste
Refrig.
Total
0.00 —
0.00 —
0.00 —
— 0.00
—
0.00 —
— 0.00
—
3,393
— — 237
— — — — — — — — 1,249
9.05 40,794
—
— — — — — — — —
52.2 9.25
—
0.18 —
35.1 —
35.3 —
0.16 —
8.89 —
9.05 Daily, Winter (Max) — —
Mobile
Area
15.6 10.4
0.00 0.00
—
0.16 0.00
0.00 —
35.1 —
35.2 0.00
0.00 —
0.15 0.00
0.00 —
8.89 —
9.04 0.00
0.00 —
34,238
0.00 3,393
237
31.9 0.00
—
Energy
Water
Waste
Refrig.
Total
— —
— —
— — — — — — — — 1,249
9.05 39,125
—
— — — — — — — —
47.5 —
10.4 —
0.16 —
35.1 —
35.2 —
0.15 —
8.89 —
9.04 Average Daily —
Mobile
Area
15.3 34.1
0.00 —
9.77 0.24
0.00 —
0.16 0.01
0.00 —
34.7 —
34.8 0.01
0.00 —
0.15 0.01
0.00 —
8.78 —
8.93 0.01
0.00 —
34,324
68.2 3,393
237
Energy
Water
Waste
Refrig.
Total
— —
— —
— — — — — — — — 1,249
9.05 39,280
—
— — — — — — — —
49.4 —
10.0 —
0.17 —
34.7 —
34.8 —
0.16 —
8.78 —
8.94 Annual —
Mobile
Area
2.80 6.23
0.00 —
1.78 0.04
0.00 —
0.03 < 0.005
0.00 —
6.33 —
6.35 < 0.005
0.00 —
0.03 < 0.005
0.00 —
1.60 —
1.63 < 0.005
0.00 —
5,683
11.3 Energy 562
Water
Waste
— —
— — 39.3
— — — — — — — — 207
8 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Refrig.
Total
— — — — — — — — 1.50
9.02 1.83 0.03 6.33 6.36 0.03 1.60 1.63 6,503
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Apartments Low
Rise
9.94 5.85
15.8 5.52
3.25 0.10
0.06 22.1
13.0 22.2
13.1 0.09
0.05 5.59
3.30 5.69
3.35 22,508
Single Family 13,261
Housing
Total 8.77
—
0.16 —
35.1 —
35.2 —
0.15 —
8.89 —
9.04 —
35,768
Daily, Winter (Max) — —
Apartments Low
Rise
9.81 6.53 0.10 22.1 22.2 0.09 5.59 5.69 21,544
Single Family
Housing
5.78 3.85 0.06 13.0 13.1 0.05 3.30 3.35 12,693
Total 15.6
—
10.4 —
0.16 —
35.1 —
35.2 —
0.15 —
8.89 —
9.04 —
34,238
Annual —
Apartments Low
Rise
1.76 1.12 0.02 3.98 4.00 0.02 1.01 1.03 3,576
Single Family
Housing
1.04 2.80
0.66 1.78
0.01 0.03
2.35 6.33
2.36 6.35
0.01 0.03
0.59 1.60
0.60 1.63
2,107
Total 5,683
9 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Apartments Low
Rise
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,535
Single Family 1,858
Housing
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3,393
Daily, Winter (Max) — —
Apartments Low
Rise
— 1,535
Single Family
Housing
— — — — — — — — 1,858
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3,393
Annual —
Apartments Low
Rise
254
Single Family
Housing
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
308
Total 562
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
10 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Apartments Low
Rise
0.00 0.00
0.00 0.00
0.00 0.00
0.00 —
—
0.00 0.00
0.00 0.00
—
—
0.00 0.00
0.00 Single Family 0.00
Housing
Total 0.00
—
0.00 —
—
—
—
0.00 —
0.00 —
—
—
—
0.00 —
0.00 Daily, Winter (Max) — —
Apartments Low
Rise
0.00 0.00 0.00 0.00 0.00 0.00 0.00
Single Family
Housing
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 Annual —
Apartments Low
Rise
0.00 0.00 0.00 0.00 0.00 0.00 0.00
Single Family
Housing
0.00 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
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) Source ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Hearths 0.00
27.0 0.00
—
0.00 —
—
—
0.00 —
0.00 —
—
—
0.00 —
0.00 Consumer —
Products
Architectural
Coatings
4.87 — — — — — — — —
11 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Landscape
Equipment
4.46 36.4
0.48 0.02 — 0.02 0.02 — 0.02 138
Total 0.48
—
0.02 —
—
—
—
—
0.02 —
0.02 —
—
—
—
—
0.02 —
138
Daily, Winter (Max) — —
Hearths 0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Consumer —
Products
27.0 Architectural
Coatings
4.87 — — — — — — — —
Total 31.9
—
0.00 —
0.00 —
—
—
—
—
0.00 —
0.00 —
—
—
—
—
0.00 —
0.00 Annual —
Hearths 0.00
4.93 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Consumer —
Products
Architectural
Coatings
0.89 0.40
6.23 — — —
—
—
— — —
—
—
— —
Landscape
Equipment
0.04 0.04
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
11.3 Total 11.3
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Apartments Low
Rise
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
115
Single Family 123
Housing
12 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
237
Daily, Winter (Max) — —
Apartments Low
Rise
—
—
115
Single Family
Housing
— — — — — — — 123
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
237
Annual —
Apartments Low
Rise
19.0 Single Family
Housing
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
20.3 Total 39.3
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Apartments Low
Rise
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
797
Single Family 451
Housing
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,249
Daily, Winter (Max) — —
Apartments Low
Rise
— 797
Single Family
Housing
— — — — — — — — 451
13 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,249
Annual —
Apartments Low
Rise
132
Single Family
Housing
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
74.7 Total 207
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Apartments Low
Rise
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.34 Single Family 4.71
Housing
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
9.05 Daily, Winter (Max) — —
Apartments Low
Rise
— 4.34
Single Family
Housing
— — — — — — — — 4.71
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
9.05 Annual —
Apartments Low
Rise
0.72 Single Family
Housing
— — — — — — — — 0.78
14 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Total — — — — — — — — 1.50
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) Equipment Type ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
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) Equipment Type ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
—
—
Annual
Total
15 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024
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) Equipment Type ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
—
—
Annual
Total
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) Vegetation ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
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) 16 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Land Use ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
—
—
Annual
Total
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Avoided —
—
—
—
—
—
Subtotal
Sequestered
Subtotal
Removed
Subtotal
17 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Annual
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
5. Activity Data
5.9. Operational Mobile Sources
5.9.1. Unmitigated
Land Use Type Trips/Weekday
4,645
Trips/Saturday
4,645
Trips/Sunday
4,645
Trips/Year
1,695,294
VMT/Weekday
31,351
VMT/Saturday
31,351
VMT/Sunday
31,351
VMT/Year
Apartments Low
Rise
11,443,232
Single Family
Housing
2,736 2,736 2,736 998,801 18,471 18,471 18,471 6,741,904
5.10. Operational Area Sources
5.10.1. Hearths
5.10.1.1. Unmitigated
Hearth Type Unmitigated (number)
Apartments Low Rise —
18 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Wood Fireplaces 0
0 0
0 0
0 0
0 0
Gas Fireplaces
Propane Fireplaces
Electric Fireplaces
No Fireplaces
Conventional Wood Stoves
Catalytic Wood Stoves
Non-Catalytic Wood Stoves
Pellet Wood Stoves
Single Family Housing
Wood Fireplaces
—
0 0
0 0
0 0
0 0
0 Gas Fireplaces
Propane Fireplaces
Electric Fireplaces
No Fireplaces
Conventional Wood Stoves
Catalytic Wood Stoves
Non-Catalytic Wood Stoves
Pellet Wood Stoves
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 Parking Area Coated (sq ft) (sq ft)
2558526.75 852,842 0.00 0.00 —
5.10.3. Landscape Equipment
Season Unit Value
19 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Snow Days day/yr
day/yr
0.00 Summer Days 180
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)
5,491,190
CO2 CH4 N2O Natural Gas (kBTU/yr)
Apartments Low Rise
Single Family Housing
100.0
100.0
0.0330
0.0330
0.0040
0.0040
0.00 6,649,403 0.00
5.12. Operational Water and Wastewater Consumption
5.12.1. Unmitigated
Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Apartments Low Rise 0.00
Single Family Housing
20,744,381
12,221,777 39,995,133
5.13. Operational Waste Generation
5.13.1. Unmitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Apartments Low Rise
Single Family Housing
423
239
—
—
5.14. Operational Refrigeration and Air Conditioning Equipment 20 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024
5.14.1. Unmitigated
Land Use Type Equipment Type Refrigerant
R-410A
GWP
2,088
Quantity (kg)
< 0.005
Operations Leak Rate
2.50 Service Leak Rate
2.50 Times Serviced
Apartments Low Rise Average room A/C & 10.0
Other residential A/C
and heat pumps
Apartments Low Rise Household refrigerators R-134a
and/or freezers
1,430
2,088
0.12 0.60
2.50 0.00
2.50 1.00
Single Family Housing Average room A/C & 10.0
Other residential A/C
R-410A < 0.005
and heat pumps
Single Family Housing Household refrigerators R-134a
and/or freezers
1,430 0.12 0.60 0.00 1.00
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 Year Horsepower Load Factor
5.16.2. Process Boilers
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
21 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024
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
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
9.82 6.25
—
annual days of extreme heat
annual days with precipitation above 20 mm
meters of inundation depth
Wildfire 9.53 annual hectares burned
22 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 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 observed 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 received 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
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score N/A
N/A
N/A
N/A
N/A
N/A
N/A
0 N/A
N/A
N/A
N/A
N/A
N/A
N/A
0 N/A
N/A
N/A
N/A
N/A
N/A
N/A
0 N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Wildfire
Flooding
Drought
Snowpack Reduction
Air Quality Degradation
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 greatest 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
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
23 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Wildfire N/A
N/A
N/A
N/A
1 N/A
N/A
N/A
N/A
1 N/A
N/A
N/A
N/A
1 N/A
N/A
N/A
N/A
2 Flooding
Drought
Snowpack Reduction
Air Quality Degradation
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 greatest 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
—
10.6 12.8
41.4 35.4
52.9 0.00
26.2 23.8
—
AQ-PM
AQ-DPM
Drinking Water
Lead Risk Housing
Pesticides
Toxic Releases
Traffic
Effect Indicators
CleanUp Sites 79.7
24 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Groundwater 75.0
Haz Waste Facilities/Generators
Impaired Water Bodies
Solid Waste
72.7 0.00
66.7 Sensitive Population —
Asthma 1.33
0.65 6.51
—
Cardio-vascular
Low Birth Weights
Socioeconomic Factor Indicators
Education 3.87
1.05 23.8
0.26 40.6
Housing
Linguistic
Poverty
Unemployment
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
Employed
97.6774028
30.82253304
99.46105479
—
Median HI
Education
Bachelor's or higher
High school enrollment
Preschool enrollment
Transportation
99.16591813
17.87501604
95.7141024
—
25 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Auto Access 89.83703323
40.87001155
—
Active commuting
Social
2-parent households
Voting
78.6603362
93.67380983
Neighborhood —
Alcohol availability
Park access
77.22314898
34.87745413
37.26421147
36.18632106
97.62607468
—
Retail density
Supermarket access
Tree canopy
Housing
Homeownership 99.9101758
96.03490312
41.01116387
90.2219941
91.95431798
—
Housing habitability
Low-inc homeowner severe housing cost burden
Low-inc renter severe housing cost burden
Uncrowded housing
Health Outcomes
Insured adults 99.67919928
Arthritis 0.0
Asthma ER Admissions
High Blood Pressure
Cancer (excluding skin)
Asthma
95.1 0.0
0.0 0.0
Coronary Heart Disease
Chronic Obstructive Pulmonary Disease
Diagnosed Diabetes
0.0 0.0
0.0 26 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Life Expectancy at Birth
Cognitively Disabled
Physically Disabled
Heart Attack ER Admissions
Mental Health Not Good
Chronic Kidney Disease
Obesity
99.3 70.6
80.2 98.4
0.0 0.0
0.0 Pedestrian Injuries
Physical Health Not Good
Stroke
19.6 0.0
0.0 Health Risk Behaviors
Binge Drinking
—
0.0 Current Smoker 0.0
No Leisure Time for Physical Activity
Climate Change Exposures
Wildfire Risk
0.0 —
0.0 SLR Inundation Area
Children
0.0 65.5
11.5 89.7
40.9 98.2
—
Elderly
English Speaking
Foreign-born
Outdoor Workers
Climate Change Adaptive Capacity
Impervious Surface Cover
Traffic Density
92.9 25.7
48.8 —
Traffic Access
Other Indices
27 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Hardship 0.0
Other Decision Support
2016 Voting
—
89.5 7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a) 1.00
99.0 No
Healthy Places Index Score for Project Location (b)
Project Located in a Designated Disadvantaged Community (Senate Bill 535) Project Located in a Low-Income Community (Assembly Bill 1550) Project Located in a Community Air Protection Program Community (Assembly Bill 617) No
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
Characteristics: Utility Information
Operations: Vehicle Data
Operations: Hearths
Operations: Energy Use
Atherton default clean energy provider is Peninsula Clean Energy.
Trip rate = 8.12 and Mi per Trip = 6.75.
No hearths.
Atherton REACH code 4.105.5.1 - all-electric new construction. Convert natural gas to electricity. 28 / 29
23-116 Atherton Housing Element Increase 2031 Detailed Report, 1/3/2024 Operations: Water and Waste Water Wastewater treatment 100% aerobic - no septic tanks or lagoons. 29 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 23-116 Atherton Existing + Housing Element 2031 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
2.4. Operations Emissions Compared Against Thresholds
2.5. Operations Emissions by Sector, 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
1 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024
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
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 2 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024
5. Activity Data
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
5.14. Operational Refrigeration and Air Conditioning Equipment
5.14.1. Unmitigated
5.15. Operational Off-Road Equipment
3 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024
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
6.3. Adjusted Climate Risk Scores
6.4. Climate Risk Reduction Measures
4 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024
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
5 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024
1. Basic Project Information
1.1. Basic Project Information
Data Field Value
Project Name
Operational Year
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
23-116 Atherton Existing + Housing Element 2031
2031
—
Project/site
County
4.20 18.8
Atherton, CA, USA
County San Mateo
City Atherton
Air District Bay Area AQMD
San Francisco Bay Area
1277
Air Basin
TA Z
EDFZ 1
Electric Utility
Gas Utility
Peninsula Clean Energy
Pacific Gas & Electric
App Version 2022.1.1.21
1.2. Land Use Types
Land Use Subtype Size Unit Lot Acreage
827
Building Area (sq ft) Landscape Area (sq Special Landscape Population 7,335
Description
—
ft) Area (sq ft)
Single Family
Housing
2,547 Dwelling Unit 3,740,000 29,832,647 —
6 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Apartments Low
Rise
572
337
Dwelling Unit
Dwelling Unit
35.8 109
606,320
657,150
0.00 —
—
1,647
971
—
Single Family —
Housing
3,947,233
1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected
2. Emissions Summary
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. ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T CO2e
Daily, Summer —
(Max)
—
Unmit. 199 69.6
—
3.71 —
118
—
122
—
3.65 —
29.9 —
33.6 —
183,113
Daily, Winter (Max) — —
Unmit. 181 73.2
—
3.62 —
118
—
122
—
3.58 —
29.9 —
33.5 —
177,439
Average Daily —
(Max)
—
Unmit. 188
—
63.6 —
2.99 —
116
—
119
—
2.94 —
29.4 —
32.3 —
166,766
Annual (Max) —
Unmit. 34.3 11.6 0.55 21.1 21.7 0.54 5.36 5.90 27,610
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
7 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Mobile
Area
53.5 144
1.74 —
29.6 10.3
29.7 —
0.53 0.77
2.40 —
118
—
119
0.77 2.40
—
0.49 0.75
2.40 —
29.9 —
30.4 0.75
2.40 —
120,362
11,263
45,629
1,164
4,659
35.8 Energy
Water
Waste
Refrig.
Total
— —
— —
— — — — — — — —
— — — — — — — —
199 69.6
—
3.71 —
118
—
122
—
3.65 —
29.9 —
33.6 —
183,113
Daily, Winter (Max) — —
Mobile
Area
52.8 35.0
8.45 29.7
—
0.53 0.68
2.40 —
118
—
119
0.68 2.40
—
0.49 0.68
2.40 —
29.9 —
30.4 0.68
2.40 —
115,215
10,737
45,629
1,164
4,659
35.8 127
1.74 —
Energy
Water
Waste
Refrig.
Total
— —
— —
— — — — — — — —
— — — — — — — —
181
—
73.2 —
3.62 —
118
—
122
—
3.58 —
29.9 —
33.5 —
177,439
Average Daily —
Mobile
Area
51.5 135
1.74 —
32.8 1.11
29.7 —
0.53 0.06
2.40 —
116
—
116
0.06 2.40
—
0.49 0.05
2.40 —
29.4 —
29.9 0.05
2.40 —
114,754
524
Energy
Water
Waste
Refrig.
Total
— — 45,629
1,164
4,659
35.8 — —
— — — — — — — —
— — — — — — — —
188
—
63.6 —
2.99 —
116
—
119
—
2.94 —
29.4 —
32.3 —
166,766
Annual —
Mobile
Area
9.40 24.6
0.32 5.98
0.20 5.42
0.10 0.01
0.44 21.1
—
21.2 0.01
0.44 0.09
0.01 0.44
5.36 —
5.45 0.01
0.44 18,999
86.8 Energy — — 7,554
8 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Water
Waste
Refrig.
Total
— — — — — — — — 193
— — — — — — — — 771
— — — — — — — — 5.93
34.3 11.6 0.55 21.1 21.7 0.54 5.36 5.90 27,610
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
43.7 9.76
53.5 24.4
5.18 0.44
0.09 98.1
19.9 98.6
20.0 0.41
0.08 24.9
5.05 25.3
5.13 99,986
Apartments Low 20,376
Rise
Total 29.6
—
0.53 —
118
—
119
—
0.49 —
29.9 —
30.4 —
120,362
Daily, Winter (Max) — —
Single Family
Housing
43.1 28.9 0.44 98.1 98.6 0.41 24.9 25.3 95,704
Apartments Low
Rise
9.63 6.13 0.09 19.9 20.0 0.08 5.05 5.13 19,510
Total 52.8
—
35.0 —
0.53 —
118
—
119
—
0.49 —
29.9 —
30.4 —
115,215
Annual —
Single Family
Housing
7.72 4.95 0.08 17.6 17.7 0.07 4.47 4.54 15,839
Apartments Low
Rise
1.69 1.03 0.02 3.50 3.52 0.02 0.89 0.90 3,160
9 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Total 9.40 5.98 0.10 21.1 21.2 0.09 5.36 5.45 18,999
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
6,260
Apartments Low 1,535
Rise
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
7,795
Daily, Winter (Max) — —
Single Family
Housing
— 6,260
Apartments Low
Rise
— — — — — — — — 1,535
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
7,795
Annual —
Single Family
Housing
1,036
Apartments Low
Rise
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
254
Total 1,291
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 ROG NOx PM10E PM10D PM10T
10 / 29
PM2.5E PM2.5D PM2.5T CO2e
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Daily, Summer
(Max)
— — — —
—
—
— — —
—
—
— —
Single Family
Housing
1.74 0.00
1.74 29.7
0.00 2.40
0.00 2.40
0.00 2.40
0.00 2.40
0.00 37,834
Apartments Low 0.00
Rise
Total 29.7
—
2.40 —
—
—
—
2.40 —
2.40 —
—
—
—
2.40 —
37,834
Daily, Winter (Max) — —
Single Family
Housing
1.74 29.7 2.40 2.40 2.40 2.40 37,834
Apartments Low
Rise
0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00
Total 1.74
—
29.7 —
2.40 —
—
—
—
2.40 —
2.40 —
—
—
—
2.40 —
37,834
Annual —
Single Family
Housing
0.32 5.42 0.44 0.44 0.44 0.44 6,264
Apartments Low
Rise
0.00 0.32
0.00 5.42
0.00 0.44
—
—
0.00 0.44
0.00 0.44
—
—
0.00 0.44
0.00 Total 6,264
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) Source ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Hearths 0.49
107
8.45 —
0.68 —
—
—
0.68 —
0.68 —
—
—
0.68 —
10,737
Consumer —
Products
11 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Architectural
Coatings
19.3 16.9
144
— — —
—
— — —
—
— —
Landscape
Equipment
1.82 0.09 0.09 0.07 0.07 526
Total 10.3
—
0.77 —
—
—
—
—
0.77 —
0.75 —
—
—
—
—
0.75 —
11,263
Daily, Winter (Max) — —
Hearths 0.49 8.45
—
0.68 —
0.68 —
0.68 —
0.68 —
10,737
Consumer —
Products
107
Architectural
Coatings
19.3 — — — — — — — —
Total 127 8.45
—
0.68 —
—
—
—
—
0.68 —
0.68 —
—
—
—
—
0.68 —
10,737
Annual —
Hearths
—
< 0.005
19.5 0.04
—
< 0.005
—
< 0.005
—
< 0.005
—
< 0.005
—
43.8 Consumer —
Products
Architectural
Coatings
3.52 1.52
24.6 — — —
—
—
— — —
—
—
— —
Landscape
Equipment
0.16 0.20
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
43.0 Total 86.8
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
— — — — — — — — 1,049
12 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Apartments Low
Rise
—
—
— — — — — — — 115
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,164
Daily, Winter (Max) — —
Single Family
Housing
— 1,049
Apartments Low
Rise
— — — — — — — — 115
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,164
Annual —
Single Family
Housing
174
Apartments Low
Rise
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
19.0 Total 193
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3,861
Apartments Low 797
Rise
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4,659
Daily, Winter (Max) — —
Single Family
Housing
— 3,861
13 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Apartments Low
Rise
— — — — — — — — 797
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4,659
Annual —
Single Family
Housing
639
Apartments Low
Rise
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
132
Total 771
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Single Family
Housing
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
31.5 Apartments Low 4.34
Rise
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
35.8 Daily, Winter (Max) — —
Single Family
Housing
— 31.5
Apartments Low
Rise
— — — — — — — — 4.34
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
35.8 Annual —
Single Family
Housing
5.21 14 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Apartments Low
Rise
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.72 Total 5.93
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) Equipment Type ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
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) Equipment Type ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
—
—
Annual
Total
15 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024
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) Equipment Type ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
—
—
Annual
Total
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) Vegetation ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
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) 16 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Land Use ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
—
—
Annual
Total
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Avoided —
—
—
—
—
—
Subtotal
Sequestered
Subtotal
Removed
Subtotal
17 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Annual
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
5. Activity Data
5.9. Operational Mobile Sources
5.9.1. Unmitigated
Land Use Type Trips/Weekday
17,651
Trips/Saturday
17,651
Trips/Sunday
17,651
Trips/Year
6,442,509
VMT/Weekday
122,672
VMT/Saturday
122,672
VMT/Sunday
122,672
VMT/Year
Single Family
Housing
44,775,439
Apartments Low
Rise
4,645
2,736
4,645
2,736
3,861
2,275
1,654,432
974,727
28,277
16,660
28,277
16,660
23,506
13,849
10,072,292
Single Family 5,934,200
Housing
5.10. Operational Area Sources
5.10.1. Hearths
5.10.1.1. Unmitigated
Hearth Type Unmitigated (number)
18 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Single Family Housing
Wood Fireplaces
—
0 Gas Fireplaces 509
Propane Fireplaces 0
Electric Fireplaces
No Fireplaces
0 2038
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces
Electric Fireplaces
No Fireplaces
0 0
0 Conventional Wood Stoves
Catalytic Wood Stoves
Non-Catalytic Wood Stoves
Pellet Wood Stoves
Conventional Wood Stoves
Catalytic Wood Stoves
Non-Catalytic Wood Stoves
Pellet Wood Stoves
Apartments Low Rise
Wood Fireplaces
0 0
0 0
0 0
0 0
—
0 Gas Fireplaces 0
Propane Fireplaces
Electric Fireplaces
No Fireplaces
0 0
0 Conventional Wood Stoves
Catalytic Wood Stoves
0 0
19 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Non-Catalytic Wood Stoves
Pellet Wood Stoves
0 0
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 Parking Area Coated (sq ft) (sq ft)
10132026.75 3,377,342 0.00 0.00 —
5.10.3. Landscape Equipment
Season Unit Value
0.00 180
Snow Days
Summer Days
day/yr
day/yr
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)
15,752,831
CO2 CH4 N2O Natural Gas (kBTU/yr)
Single Family Housing
Apartments Low Rise
Single Family Housing
100.0
100.0
100.0
0.0330
0.0330
0.0330
0.0040
0.0040
0.0040
117,727,236
5,491,190 0.00
6,649,403 0.00
5.12. Operational Water and Wastewater Consumption
5.12.1. Unmitigated
Land Use Indoor Water (gal/year)
92,370,521
Outdoor Water (gal/year)
Single Family Housing 302,277,741
20 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Apartments Low Rise
Single Family Housing
20,744,381
12,221,777
0.00 39,995,133
5.13. Operational Waste Generation
5.13.1. Unmitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Single Family Housing
Apartments Low Rise
Single Family Housing
1,809
423
—
—
239 —
5.14. Operational Refrigeration and Air Conditioning Equipment
5.14.1. Unmitigated
Land Use Type Equipment Type Refrigerant
R-410A
GWP
2,088
Quantity (kg)
< 0.005
Operations Leak Rate
2.50 Service Leak Rate
2.50 Times Serviced
Single Family Housing Average room A/C & 10.0
Other residential A/C
and heat pumps
Single Family Housing Household refrigerators R-134a
and/or freezers
1,430
2,088
0.12 0.60
2.50 0.00
2.50 1.00
Apartments Low Rise Average room A/C & 10.0
Other residential A/C
and heat pumps
R-410A < 0.005
Apartments Low Rise Household refrigerators R-134a
and/or freezers
1,430
2,088
0.12 0.60
2.50 0.00
2.50 1.00
Single Family Housing Average room A/C & 10.0
Other residential A/C
R-410A < 0.005
and heat pumps
Single Family Housing Household refrigerators R-134a
and/or freezers
1,430 0.12 0.60 0.00 1.00
21 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024
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 Year Horsepower Load Factor
5.16.2. Process Boilers
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
22 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 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
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
9.82 6.25
—
annual days of extreme heat
annual days with precipitation above 20 mm
meters of inundation depth
Wildfire 9.53 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 observed 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 received 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
23 / 29
Adaptive Capacity Score Vulnerability Score
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
N/A
N/A
N/A
N/A
N/A
N/A
N/A
0 N/A
N/A
N/A
N/A
N/A
N/A
N/A
0 N/A
N/A
N/A
N/A
N/A
N/A
N/A
0 N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Wildfire
Flooding
Drought
Snowpack Reduction
Air Quality Degradation
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 greatest 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
Climate Hazard
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score N/A
N/A
N/A
N/A
N/A
N/A
N/A
1 N/A
N/A
N/A
N/A
N/A
N/A
N/A
1 N/A
N/A
N/A
N/A
N/A
N/A
N/A
1 N/A
N/A
N/A
N/A
N/A
N/A
N/A
2 Wildfire
Flooding
Drought
Snowpack Reduction
Air Quality Degradation
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 greatest 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. 24 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024
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
—
10.6 12.8
41.4 35.4
52.9 0.00
26.2 23.8
—
AQ-PM
AQ-DPM
Drinking Water
Lead Risk Housing
Pesticides
Toxic Releases
Traffic
Effect Indicators
CleanUp Sites
Groundwater
79.7 75.0
72.7 0.00
66.7 —
Haz Waste Facilities/Generators
Impaired Water Bodies
Solid Waste
Sensitive Population
Asthma 1.33
0.65 6.51
—
Cardio-vascular
Low Birth Weights
Socioeconomic Factor Indicators
25 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Education
Housing
3.87 1.05
23.8 0.26
40.6 Linguistic
Poverty
Unemployment
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
Employed
97.6774028
30.82253304
99.46105479
—
Median HI
Education
Bachelor's or higher
High school enrollment
Preschool enrollment
Transportation
Auto Access
99.16591813
17.87501604
95.7141024
—
89.83703323
40.87001155
—
Active commuting
Social
2-parent households
Voting
78.6603362
93.67380983
Neighborhood —
Alcohol availability
Park access
77.22314898
34.87745413
Retail density 37.26421147
26 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Supermarket access
Tree canopy
36.18632106
97.62607468
Housing —
Homeownership 99.9101758
Housing habitability
Low-inc homeowner severe housing cost burden
Low-inc renter severe housing cost burden
Uncrowded housing
Health Outcomes
96.03490312
41.01116387
90.2219941
91.95431798
—
Insured adults 99.67919928
Arthritis 0.0
Asthma ER Admissions
High Blood Pressure
Cancer (excluding skin)
Asthma
95.1 0.0
0.0 0.0
Coronary Heart Disease
Chronic Obstructive Pulmonary Disease
Diagnosed Diabetes
Life Expectancy at Birth
Cognitively Disabled
Physically Disabled
Heart Attack ER Admissions
Mental Health Not Good
Chronic Kidney Disease
Obesity
0.0 0.0
0.0 99.3
70.6 80.2
98.4 0.0
0.0 0.0
Pedestrian Injuries 19.6
Physical Health Not Good 0.0
27 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Stroke 0.0
Health Risk Behaviors
Binge Drinking
—
0.0 Current Smoker
No Leisure Time for Physical Activity
Climate Change Exposures
Wildfire Risk
0.0 0.0
—
0.0 SLR Inundation Area
Children
0.0 65.5
11.5 89.7
40.9 98.2
—
Elderly
English Speaking
Foreign-born
Outdoor Workers
Climate Change Adaptive Capacity
Impervious Surface Cover
Traffic Density
92.9 25.7
48.8 —
Traffic Access
Other Indices
Hardship 0.0
Other Decision Support
2016 Voting
—
89.5 7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a)
Healthy Places Index Score for Project Location (b)
Project Located in a Designated Disadvantaged Community (Senate Bill 535)
1.00 99.0
No
28 / 29
23-116 Atherton Existing + Housing Element 2031 Detailed Report, 1/3/2024 Project Located in a Low-Income Community (Assembly Bill 1550) No 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
Characteristics: Utility Information
Land Use
Atherton default clean energy provider is Peninsula Clean Energy. 2,547 existing single family homes plus housing element increase.
Operations: Vehicle Data Provided trip rate for existing is 6.93 and provided Mi per trip is 6.95. For housing element increase the trip rate is 8.12 and the trip length is 6.75.
Operations: Water and Waste Water
Operations: Hearths
Wastewater treatment 100% aerobic - no septic tanks or lagoons.
No hearths besides for existing uses.
Operations: Energy Use Existing energy usage stays the same. For housing element increase - convert natural gas to electricity.
29 / 29
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Menlo School Site 2 Construction Defaults 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 Year, Unmitigated
2.3. Construction Emissions by Year, Mitigated
3. Construction Emissions Details
3.1. Demolition (2025) - Unmitigated
3.2. Demolition (2025) - Mitigated
3.3. Site Preparation (2025) - Unmitigated
3.4. Site Preparation (2025) - Mitigated
3.5. Grading (2025) - Unmitigated
1 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
3.6. Grading (2025) - Mitigated
3.7. Building Construction (2025) - Unmitigated
3.8. Building Construction (2025) - Mitigated
3.9. Paving (2025) - Unmitigated
3.10. Paving (2025) - Mitigated
3.11. Architectural Coating (2025) - Unmitigated
3.12. Architectural Coating (2025) - Mitigated
4. Operations Emissions Details
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
4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated
4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated
4.10.6. Avoided and Sequestered Emissions by Species - Mitigated
5. Activity Data
5.1. Construction Schedule
2 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
5.2. Off-Road Equipment
5.2.1. Unmitigated
5.2.2. Mitigated
5.3. Construction Vehicles
5.3.1. Unmitigated
5.3.2. Mitigated
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
5.5. Architectural Coatings
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
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
3 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
5.18.1.2. Mitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.1.2. Mitigated
5.18.2. Sequestration
5.18.2.1. Unmitigated
5.18.2.2. Mitigated
6. Climate Risk Detailed Report
6.1. Climate Risk Summary
6.2. Initial Climate Risk Scores
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
4 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
7.5. Evaluation Scorecard
7.6. Health & Equity Custom Measures
8. User Changes to Default Data
5 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
1. Basic Project Information
1.1. Basic Project Information
Data Field Value
Project Name
Construction Start Date
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
Menlo School Site 2 Construction Defaults
1/1/2025
—
Project/site
County
4.20 18.8
50 Valparaiso Ave, Atherton, CA 94027, USA
County San Mateo
City Atherton
Air District Bay Area AQMD
San Francisco Bay Area
1267
Air Basin
TA Z
EDFZ 1
Electric Utility
Gas Utility
Peninsula Clean Energy
Pacific Gas & Electric
App Version 2022.1.1.21
1.2. Land Use Types
Land Use Subtype Size Unit Lot Acreage
0.53 Building Area (sq ft) Landscape Area (sq Special Landscape Population
58.0 Description
—
ft) Area (sq ft)
Apartments Mid Rise 20.0 Dwelling Unit 19,200 0.00 —
6 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector # Measure Title
Construction
Construction
Construction
C-5 Use Advanced Engine Tiers
Water Exposed Surfaces
Limit Vehicle Speeds on Unpaved Roads
C-10-A
C-11
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. ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Unmit. 54.2 5.17
2.10 59%
—
0.22 0.06
72%
—
0.01 0.01
—
0.22 0.07
70%
—
0.20 0.06
72%
—
< 0.005
< 0.005
—
0.20 0.06
71%
—
1,323
1,323
—
Mit. 54.1
% Reduced < 0.5%
Daily, Winter (Max) — — — —
Unmit. 1.10 10.1
1.47 85%
—
0.46 0.03
93%
—
5.31 2.07
61%
—
5.78 2.11
64%
—
0.43 0.03
92%
—
2.57 1.00
61%
—
3.00 1.03
65%
—
1,724
1,724
—
Mit. 0.18
84%
—
% Reduced
Average Daily
(Max)
—
Unmit. 0.92
0.79 14%
—
1.68 0.27
84%
—
0.07 0.01
88%
—
0.03 0.01
58%
—
0.10 0.02
78%
—
0.06 0.01
87%
—
0.01 0.01
59%
—
0.08 0.01
82%
—
411
411
—
Mit.
% Reduced
Annual (Max)
Unmit.
—
0.17 0.31 0.01 0.01 0.02 0.01 < 0.005 0.01 68.1
7 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Mit. 0.14
14%
0.05 84%
< 0.005
88%
< 0.005
58%
< 0.005
78%
< 0.005
87%
< 0.005
59%
< 0.005
82%
68.1 % Reduced —
2.2. Construction Emissions by Year, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily - Summer —
(Max)
2025 54.2
—
5.17 —
0.22 —
0.01 —
0.22 —
0.20 —
< 0.005
—
0.20 —
1,323
Daily - Winter —
(Max)
2025 1.10
—
10.1 —
0.46 —
5.31 —
5.78 —
0.43 —
2.57 —
3.00 —
1,724
Average Daily —
2025 0.92
—
1.68 —
0.07 —
0.03 —
0.10 —
0.06 —
0.01 —
0.08 —
411
Annual —
2025 0.17 0.31 0.01 0.01 0.02 0.01 < 0.005 0.01 68.1
2.3. Construction Emissions by Year, Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily - Summer —
(Max)
2025 54.1
—
2.10 —
0.06 —
0.01 —
0.07 —
0.06 —
< 0.005
—
0.06 —
1,323
Daily - Winter —
(Max)
2025 0.18
—
1.47 —
0.03 —
2.07 —
2.11 —
0.03 —
1.00 —
1.03 —
1,724
Average Daily —
2025 0.79 0.27 0.01 0.01 0.02 0.01 0.01 0.01 411
8 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Annual
2025
— — — — — — — — —
0.14 0.05 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 68.1
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
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Daily, Winter (Max) — — — —
—
— — —
—
— —
Off-Road 0.47 4.33 0.16 0.16 0.14 0.14 855
Equipment
Demolition — — — 0.00
0.00 —
0.00 0.00
—
— 0.00
0.00 —
0.00 0.00
—
—
Onsite truck
Average Daily
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road 0.01 0.12 < 0.005 — < 0.005 < 0.005 — < 0.005 23.4 Equipment
Demolition
Onsite truck
Annual
— — — 0.00
0.00 —
0.00 0.00
—
— 0.00
0.00 —
0.00 0.00
—
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road < 0.005 0.02 < 0.005 — < 0.005 < 0.005 — < 0.005 3.88 Equipment
Demolition
Onsite truck
Offsite
— — — 0.00
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, Summer
(Max)
— — — — — — — — —
9 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Daily, Winter (Max) — — — — — — — — —
Worker
Vendor
0.02 0.01
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
5.23 0.00
0.00 —
0.00 0.00
—
Hauling
Average Daily
Worker
Vendor
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.14 0.00
0.00 —
Hauling
Annual
Worker
Vendor
< 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.02 0.00
Hauling 0.00
3.2. Demolition (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Daily, Winter (Max) — — — —
—
— — —
—
— —
Off-Road 0.10 1.47 0.02 0.02 0.02 0.02 855
Equipment
Demolition — — — 0.00
0.00 —
0.00 0.00
—
— 0.00
0.00 —
0.00 0.00
—
—
Onsite truck
Average Daily
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road < 0.005 0.04 < 0.005 — < 0.005 < 0.005 — < 0.005 23.4 Equipment
Demolition — — — 0.00 0.00 — 0.00 0.00 —
10 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 3.88 Equipment
Demolition
Onsite truck
Offsite
— — — 0.00
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, Summer
(Max)
— — — — — — — — —
Daily, Winter (Max) — — — — — — — — —
Worker
Vendor
0.02 0.01
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
5.23 0.00
0.00 —
0.00 0.00
—
Hauling
Average Daily
Worker
Vendor
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.14 0.00
0.00 —
Hauling
Annual
Worker
Vendor
< 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.02 0.00
Hauling 0.00
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
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
11 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Daily, Winter (Max) — — — —
—
— — —
—
— —
Off-Road 0.47 4.16 0.21 0.21 0.20 0.20 862
Equipment
Dust From Material —
Movement
— — 0.53 0.53 — 0.06 0.06 —
Onsite truck 0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily — —
Off-Road < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 2.36 Equipment
Dust From Material —
Movement
— — < 0.005 < 0.005 — < 0.005 < 0.005 —
Onsite truck
Annual
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 — —
Off-Road < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.39 Equipment
Dust From Material —
Movement
— — < 0.005 < 0.005 — < 0.005 < 0.005 —
Onsite truck
Offsite
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 — —
Daily, Summer —
(Max)
— — — — — — — —
Daily, Winter (Max) — — — — — — — — —
Worker 0.01 < 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
2.62 0.00
0.00 —
Vendor 0.00
0.00 —
Hauling
Average Daily
Worker < 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.01 0.00
0.00 —
Vendor
Hauling
Annual
12 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Worker
Vendor
Hauling
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 < 0.005
0.00 < 0.005
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.4. Site Preparation (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Daily, Winter (Max) — — — —
—
— — —
—
— —
Off-Road 0.08 0.42 0.02 0.02 0.02 0.02 862
Equipment
Dust From Material —
Movement
— — 0.21 0.21 — 0.02 0.02 —
Onsite truck 0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily — —
Off-Road < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 2.36 Equipment
Dust From Material —
Movement
— — < 0.005 < 0.005 — < 0.005 < 0.005 —
Onsite truck
Annual
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 — —
Off-Road < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.39 Equipment
Dust From Material —
Movement
— — < 0.005 < 0.005 — < 0.005 < 0.005 —
Onsite truck
Offsite
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 — —
13 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Daily, Summer
(Max)
— — — — — — — — —
Daily, Winter (Max) — — — — — — — — —
Worker
Vendor
0.01 < 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
2.62 0.00
0.00 —
0.00 0.00
—
Hauling
Average Daily
Worker
Vendor
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.01 0.00
0.00 —
Hauling
Annual
Worker
Vendor
< 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
< 0.005
0.00 Hauling 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
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Daily, Winter (Max) — — — —
—
— — —
—
— —
Off-Road 1.09 10.1 0.46 0.46 0.43 0.43 1,720
Equipment
Dust From Material —
Movement
— — 5.31 5.31 — 2.57 2.57 —
Onsite truck 0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily — —
14 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Off-Road
Equipment
0.01 0.06
—
< 0.005
—
— < 0.005
0.03 < 0.005
—
— < 0.005
0.01 9.42
Dust From Material — —
Movement
0.03 0.01
Onsite truck
Annual
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 — —
Off-Road < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 1.56 Equipment
Dust From Material —
Movement
— — 0.01 0.01 — < 0.005 < 0.005 —
Onsite truck
Offsite
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 — —
Daily, Summer —
(Max)
— — — — — — — —
Daily, Winter (Max) — — — — — — — — —
Worker
Vendor
0.02 0.01
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
3.93 0.00
0.00 —
0.00 0.00
—
Hauling
Average Daily
Worker
Vendor
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.02 0.00
0.00 —
Hauling
Annual
Worker
Vendor
< 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
< 0.005
0.00 Hauling 0.00
3.6. Grading (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 15 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Daily, Winter (Max) — — — —
—
— — —
—
— —
Off-Road 0.16 0.84 0.03 0.03 0.03 0.03 1,720
Equipment
Dust From Material —
Movement
— — 2.07 2.07 — 1.00 1.00 —
Onsite truck 0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily — —
Off-Road < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 9.42 Equipment
Dust From Material —
Movement
— — 0.01 0.01 — 0.01 0.01 —
Onsite truck
Annual
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 — —
Off-Road < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 1.56 Equipment
Dust From Material —
Movement
— — < 0.005 < 0.005 — < 0.005 < 0.005 —
Onsite truck
Offsite
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 — —
Daily, Summer —
(Max)
— — — — — — — —
Daily, Winter (Max) — — — — — — — — —
Worker 0.02 0.01
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
3.93 0.00
0.00 —
Vendor 0.00
0.00 —
Hauling
Average Daily
16 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Worker
Vendor
Hauling
Annual
Worker
Vendor
Hauling
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
—
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
—
< 0.005
0.00 < 0.005
0.00 0.02
0.00 0.00
—
0.00 0.00 0.00 0.00 0.00 0.00
— — — — — —
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 < 0.005
0.00 < 0.005
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.7. 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
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Off-Road
Equipment
0.52 0.00
5.14 0.22 — 0.22 0.20 — 0.20 1,309
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Daily, Winter (Max) — —
Off-Road 0.52 5.14 0.22 — 0.22 0.20 — 0.20 1,309
Equipment
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily —
Off-Road 0.14 1.41 0.06 — 0.06 0.05 — 0.05 359
Equipment
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road 0.03 0.26 0.01 — 0.01 0.01 — 0.01 59.4
Equipment
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 17 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Offsite —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Summer —
(Max)
Worker
Vendor
Hauling
0.03 0.01
0.03 0.00
—
0.00 < 0.005
0.00 —
0.01 0.01 0.00
< 0.005
0.00 —
< 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 7.70
6.06 0.00
—
< 0.005
0.00 < 0.005
0.00 < 0.005
0.00 Daily, Winter (Max) — — — — —
Worker
Vendor
0.03 0.01
0.03 0.00
—
0.00 < 0.005
0.00 —
0.01 0.01 0.00
< 0.005
0.00 —
< 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 7.54
6.04 0.00
—
< 0.005
0.00 < 0.005
0.00 < 0.005
Hauling 0.00
Average Daily
Worker
Vendor
— — — — —
0.01 < 0.005
0.01 0.00
—
0.00 < 0.005
0.00 —
< 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 0.00
< 0.005
0.00 —
< 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 2.06
1.66 0.00
—
< 0.005
Hauling 0.00
Annual — — — — —
Worker
Vendor
< 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 0.00
< 0.005
0.00 < 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 0.00
< 0.005
0.00 < 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 0.34
0.27 Hauling 0.00
3.8. Building Construction (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Off-Road
Equipment
0.12 0.00
0.64 0.00
0.02 0.00
— 0.02
0.00 0.02
0.00 — 0.02
0.00 1,309
Onsite truck 0.00 0.00 0.00
18 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Daily, Winter (Max) — — — —
—
— — —
—
— —
Off-Road 0.12 0.64 0.02 0.02 0.02 0.02 1,309
Equipment
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily —
Off-Road 0.03 0.18 0.01 — 0.01 0.01 — 0.01 359
Equipment
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road 0.01 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 59.4 Equipment
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer
(Max)
— — — — — — — — —
Worker
Vendor
Hauling
0.03 0.01
0.03 0.00
—
0.00 0.01 0.01 0.00 < 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 7.70
6.06 0.00
—
< 0.005
0.00 < 0.005
0.00 < 0.005
0.00 < 0.005
0.00 < 0.005
0.00 Daily, Winter (Max) — — — — — — —
Worker
Vendor
0.03 0.01
0.03 0.00
—
0.00 0.01 0.01 0.00 < 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 7.54
6.04 0.00
—
< 0.005
0.00 < 0.005
0.00 < 0.005
0.00 < 0.005
0.00 < 0.005
Hauling 0.00
Average Daily
Worker
Vendor
— — — — — — —
0.01 < 0.005
0.01 0.00
—
0.00 < 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 0.00 < 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 2.06
1.66 0.00
—
< 0.005
0.00 < 0.005
0.00 < 0.005
Hauling 0.00
Annual — — — — — — —
Worker
Vendor
< 0.005
< 0.005
< 0.005
< 0.005
0.00 < 0.005
< 0.005
< 0.005
< 0.005
0.00 < 0.005
< 0.005
< 0.005
< 0.005
0.34 < 0.005 < 0.005 0.27
19 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.9. Paving (2025) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Off-Road 0.51 4.37 0.19 — 0.19 0.18 — 0.18 826
Equipment
Paving 0.00
0.00 — — — — — — — —
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Daily, Winter (Max) — —
Average Daily — — — — — — — — —
Off-Road 0.01 0.06 < 0.005 — < 0.005 < 0.005 — < 0.005 11.3 Equipment
Paving 0.00
0.00 —
— — — — — — — —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 1.87 Equipment
Paving 0.00
0.00 —
— — — — — — — —
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer
(Max)
— — — — — — — — —
Worker
Vendor
Hauling
0.04 0.00
0.00 0.01
0.00 0.00
0.00 0.00
0.00 0.01
0.00 0.00
0.01 0.00
0.00 0.00
0.00 0.00
< 0.005
0.00 < 0.005
0.00 9.35
0.00 0.00 0.00 0.00
20 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Daily, Winter (Max) — — — — — — — — —
Average Daily
Worker
— — — — — — — — —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.13 0.00
0.00 —
Vendor
Hauling
Annual
Worker < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.02 0.00
0.00 Vendor
Hauling
3.10. Paving (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Off-Road 0.23 2.09 0.06 — 0.06 0.06 — 0.06 826
Equipment
Paving 0.00
0.00 — — — — — — — —
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Daily, Winter (Max) — —
Average Daily — — — — — — — — —
Off-Road < 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 11.3 Equipment
Paving 0.00
0.00 —
— — — — — — — —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 1.87 Equipment
21 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Paving 0.00
0.00 —
— — — — — — — —
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer
(Max)
— — — — — — — — —
Worker
Vendor
Hauling
0.04 0.00
0.00 0.01
0.00 0.00
—
0.00 0.00
0.00 —
0.01 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
9.35 0.00
0.00 Daily, Winter (Max) — —
Average Daily
Worker
— — — — — — — — —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.13 0.00
0.00 —
Vendor
Hauling
Annual
Worker < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.02 0.00
0.00 Vendor
Hauling
3.11. Architectural Coating (2025) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Off-Road
Equipment
0.13 54.1
0.00 0.88
—
0.03 —
— 0.03
—
0.03 —
— 0.03
—
134
Architectural —
Coatings
— —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
22 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Daily, Winter (Max) — — — —
—
—
— — —
—
—
— —
Average Daily — — — — — — —
Off-Road < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 1.84 Equipment
Architectural
Coatings
0.74 — — — — — — — —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.30 Equipment
Architectural
Coatings
0.14 — — — — — — — —
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer
(Max)
— — — — — — — — —
Worker
Vendor
Hauling
0.01 0.00
0.00 < 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
1.54 0.00
0.00 Daily, Winter (Max) — —
Average Daily
Worker
— — — — — — — — —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.02 0.00
0.00 —
Vendor
Hauling
Annual
Worker < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
< 0.005
0.00 0.00
Vendor
Hauling
23 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
3.12. Architectural Coating (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D PM2.5T
—
CO2e
— —
—
—
Daily, Summer —
(Max)
— — — — — — —
Off-Road
Equipment
0.02 54.1
0.00 0.65
—
< 0.005
—
—
—
< 0.005
—
< 0.005
—
—
—
< 0.005
—
134
Architectural —
Coatings
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Daily, Winter (Max) — —
Average Daily — — — — — — — — —
Off-Road < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 1.84 Equipment
Architectural
Coatings
0.74 — — — — — — — —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.30 Equipment
Architectural
Coatings
0.14 — — — — — — — —
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer
(Max)
— — — — — — — — —
Worker
Vendor
Hauling
0.01 0.00
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 < 0.005
0.00 1.54
0.00 0.00 0.00 0.00 0.00 0.00 0.00
24 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Daily, Winter (Max) — — — — — — — — —
Average Daily
Worker
— — — — — — — — —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.02 0.00
0.00 —
Vendor
Hauling
Annual
Worker < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
< 0.005
0.00 0.00
Vendor
Hauling
4. Operations Emissions Details
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) Vegetation ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
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 ROG NOx PM10E PM10D PM10T
25 / 42
PM2.5E PM2.5D PM2.5T CO2e
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Daily, Summer
(Max)
—
—
— — — — — — — —
Total —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
—
—
Annual
Total
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 ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
26 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Annual —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetation ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
—
—
Annual
Total
4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Total — —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Total —
27 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Annual
Total
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.10.6. Avoided and Sequestered Emissions by Species - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
PM2.5T
—
CO2e
Daily, Summer —
(Max)
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max) —
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
Annual
Avoided
Subtotal
Sequestered
Subtotal
28 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
5. Activity Data
5.1. Construction Schedule
Phase Name
Demolition
Phase Type Start Date
1/1/2025
End Date
1/15/2025
1/17/2025
1/20/2025
6/10/2025
6/18/2025
6/26/2025
Days Per Week
5.00 Work Days per Phase Phase Description
Demolition 10.0
1.00 2.00
100
—
—
—
—
—
—
Site Preparation
Grading
Site Preparation
Grading
1/16/2025
1/18/2025
1/21/2025
6/11/2025
6/19/2025
5.00 5.00
Building Construction
Paving
Building Construction
Paving
5.00 5.00 5.00
Architectural Coating Architectural Coating 5.00 5.00
5.2. Off-Road Equipment
5.2.1. Unmitigated
Phase Name
Demolition
Equipment Type Fuel Type Engine Tier
Average
Number per Day
2.00 Hours Per Day
6.00 Horsepower
84.0 Load Factor
Tractors/Loaders/Backh Diesel 0.37
oes
Demolition
Demolition
Rubber Tired Dozers Diesel
Diesel
Average
Average
1.00 1.00
1.00 8.00
367 0.40
Concrete/Industrial 0.73
Saws
33.0 Site Preparation
Site Preparation
Graders Diesel Average
Average
1.00 1.00
8.00 8.00
148 0.41
Tractors/Loaders/Backh Diesel 0.37
oes
84.0 Grading Graders Diesel Average 1.00 6.00 148 0.41
29 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Grading
Grading
Rubber Tired Dozers Diesel Average
Average
1.00 1.00
6.00 7.00
367 0.40
Tractors/Loaders/Backh Diesel 0.37
oes
84.0 Building Construction
Building Construction
Building Construction
Cranes
Forklifts
Diesel
Diesel
Average
Average
Average
1.00 2.00
2.00 4.00
6.00 8.00
367 0.29
0.20 0.37
82.0 Tractors/Loaders/Backh Diesel 84.0
oes
Paving
Paving
Tractors/Loaders/Backh Diesel
oes
Average
Average
1.00 4.00
7.00 6.00
84.0 10.0
0.37 Cement and Mortar 0.56
Mixers
Diesel
Paving Pavers Diesel
Diesel
Diesel
Average
Average
Average
1.00 1.00
1.00 7.00
7.00 6.00
81.0 36.0
37.0 0.42
0.38 0.48
Paving Rollers
Architectural Coating Air Compressors
5.2.2. Mitigated
Phase Name
Demolition
Equipment Type Fuel Type Engine Tier
Tier 4 Final
Number per Day
2.00 Hours Per Day
6.00 Horsepower
84.0 Load Factor
Tractors/Loaders/Backh Diesel 0.37
oes
Demolition
Demolition
Rubber Tired Dozers Diesel
Diesel
Tier 4 Final
Tier 4 Final
1.00 1.00
1.00 8.00
367 0.40
Concrete/Industrial 0.73
Saws
33.0 Site Preparation
Site Preparation
Graders Diesel Tier 4 Final
Tier 4 Final
1.00 1.00
8.00 8.00
148 0.41
Tractors/Loaders/Backh Diesel 0.37
oes
84.0 Grading
Grading
Grading
Graders Diesel
Diesel
Tier 4 Final
Tier 4 Final
Tier 4 Final
1.00 1.00
1.00 6.00
6.00 7.00
148
367
84.0 0.41
0.40 0.37
Rubber Tired Dozers
Tractors/Loaders/Backh Diesel
oes
Building Construction Cranes Diesel Tier 4 Final 1.00 4.00 367 0.29 30 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Building Construction
Building Construction
Forklifts Diesel Tier 4 Final
Tier 4 Final
2.00 2.00
6.00 8.00
82.0 84.0
0.20 Tractors/Loaders/Backh Diesel 0.37
oes
Paving
Paving
Tractors/Loaders/Backh Diesel
oes
Tier 4 Final
Average
1.00 4.00
7.00 6.00
84.0 10.0
0.37 Cement and Mortar 0.56
Mixers
Diesel
Paving Pavers Diesel
Diesel
Diesel
Tier 4 Final
Tier 4 Final
Tier 4 Final
1.00 1.00
1.00 7.00
7.00 6.00
81.0 36.0
37.0 0.42
0.38 0.48
Paving Rollers
Architectural Coating Air Compressors
5.3. Construction Vehicles
5.3.1. Unmitigated
Phase Name
Demolition
Trip Type
—
One-Way Trips per Day Miles per Trip
—
Vehicle Mix
— —
Demolition Worker
Vendor
Hauling
10.0 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Demolition
Demolition 0.00
Demolition Onsite truck —
—
HHDT
Site Preparation
Site Preparation
Site Preparation
Site Preparation
Site Preparation
Grading
— — —
Worker
Vendor
Hauling
Onsite truck
—
5.00 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
0.00 HHDT
— HHDT
— — —
Grading Worker
Vendor
7.50 —
0.50 0.50
LDA,LDT1,LDT2
Grading HHDT,MHDT
31 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Grading Hauling
Onsite truck
—
0.00 —
0.50 —
HHDT
Grading HHDT
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
— — —
Worker
Vendor
Hauling
Onsite truck
—
14.4 2.14
0.00 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
— — —
Paving Worker
Vendor
Hauling
Onsite truck
—
17.5 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Paving
Paving 0.00
Paving — HHDT
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
— — —
Worker
Vendor
Hauling
Onsite truck
2.88 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
0.00 HHDT
— HHDT
5.3.2. Mitigated
Phase Name
Demolition
Trip Type
—
One-Way Trips per Day Miles per Trip Vehicle Mix
— — —
Demolition Worker
Vendor
Hauling
Onsite truck
—
10.0 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Demolition
Demolition 0.00
Demolition — HHDT
Site Preparation
Site Preparation
— — —
Worker 5.00 0.50 LDA,LDT1,LDT2
32 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Site Preparation
Site Preparation
Site Preparation
Grading
Vendor
Hauling
Onsite truck
—
— 0.50
0.50 —
HHDT,MHDT
0.00 HHDT
— HHDT
— — —
Grading Worker
Vendor
Hauling
Onsite truck
—
7.50 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Grading
Grading 0.00
Grading — HHDT
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
— — —
Worker
Vendor
Hauling
Onsite truck
—
14.4 2.14
0.00 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
— — —
Paving Worker
Vendor
Hauling
Onsite truck
—
17.5 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Paving
Paving 0.00
Paving — HHDT
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
— — —
Worker
Vendor
Hauling
Onsite truck
2.88 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
0.00 HHDT
— HHDT
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
Non-applicable. No control strategies activated by user. 33 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
5.5. Architectural Coatings
Phase Name Residential Interior Area Coated Residential Exterior Area Coated Non-Residential Interior Area Non-Residential Exterior Area Coated (sq ft)
Parking Area Coated (sq ft)
—
(sq ft) (sq ft) Coated (sq ft)
Architectural Coating 38,880 12,960 0.00 0.00
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
Phase Name
Demolition
Site Preparation
Grading
Material Imported (cy) Material Exported (cy) Acres Graded (acres) Material Demolished (sq. ft.) Acres Paved (acres)
0.00 —
0.00 —
0.00 0.50
1.50 0.00
— —
—
—
—
0.00 0.00
0.00 — —
Paving 0.00 0.00
5.6.2. Construction Earthmoving Control Strategies
Non-applicable. No control strategies activated by user.
5.7. Construction Paving
Land Use Area Paved (acres)
—
% Asphalt
Apartments Mid Rise 0%
5.8. Construction Electricity Consumption and Emissions Factors kWh per Year and Emission Factor (lb/MWh)
Year kWh per Year
0.00 CO2 CH4
0.03 N2O
2025 100.0 < 0.005
34 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
Vegetation Land Use Type Vegetation Soil Type
Vegetation Soil Type
Initial Acres Final Acres
Final Acres
5.18.1.2. Mitigated
Vegetation Land Use Type Initial Acres
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
Biomass Cover Type Initial Acres Final Acres
Final Acres
5.18.1.2. Mitigated
Biomass Cover Type Initial Acres
5.18.2. Sequestration
5.18.2.1. Unmitigated
Tree Type Number
Number
Electricity Saved (kWh/year)
Electricity Saved (kWh/year)
Natural Gas Saved (btu/year)
Natural Gas Saved (btu/year)
5.18.2.2. Mitigated
Tree Type
35 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023
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
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
9.82 6.25
—
annual days of extreme heat
annual days with precipitation above 20 mm
meters of inundation depth
Wildfire 9.53 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 observed 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 received 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
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
Wildfire
Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Flooding
Drought
Snowpack Reduction
36 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Air Quality Degradation N/A N/A N/A 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 greatest 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
Climate Hazard
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Wildfire
Flooding
Drought
Snowpack Reduction
Air Quality Degradation
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 greatest 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 —
37 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 AQ-Ozone 10.6
13.0 47.8
50.6 33.8
60.2 25.5
29.4 —
AQ-PM
AQ-DPM
Drinking Water
Lead Risk Housing
Pesticides
Toxic Releases
Traffic
Effect Indicators
CleanUp Sites
Groundwater
88.6 80.3
78.4 0.00
59.2 —
Haz Waste Facilities/Generators
Impaired Water Bodies
Solid Waste
Sensitive Population
Asthma 1.30
0.35 1.82
—
Cardio-vascular
Low Birth Weights
Socioeconomic Factor Indicators
Education 5.10
42.3 0.00
9.27 41.8
Housing
Linguistic
Poverty
Unemployment
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. 38 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Indicator Result for Project Census Tract
Economic —
Above Poverty 98.25484409
7.070447838
99.98716797
—
Employed
Median HI
Education
Bachelor's or higher
High school enrollment
Preschool enrollment
Transportation
98.84511741
100
87.03965097
—
Auto Access 93.63531374
72.88592326
—
Active commuting
Social
2-parent households
Voting
41.76825356
82.36879251
Neighborhood —
Alcohol availability
Park access
83.90863596
12.6780444
34.23585269
26.26716284
97.35660208
—
Retail density
Supermarket access
Tree canopy
Housing
Homeownership
Housing habitability
Low-inc homeowner severe housing cost burden
Low-inc renter severe housing cost burden
Uncrowded housing
96.29154369
96.54818427
59.66893366
90.94058771
96.93314513
39 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Health Outcomes —
Insured adults 98.84511741
Arthritis 0.0
Asthma ER Admissions
High Blood Pressure
Cancer (excluding skin)
Asthma
95.8 0.0
0.0 0.0
Coronary Heart Disease
Chronic Obstructive Pulmonary Disease
Diagnosed Diabetes
Life Expectancy at Birth
Cognitively Disabled
Physically Disabled
Heart Attack ER Admissions
Mental Health Not Good
Chronic Kidney Disease
Obesity
0.0 0.0
0.0 94.9
84.2 68.4
99.3 0.0
0.0 0.0
Pedestrian Injuries
Physical Health Not Good
Stroke
87.3 0.0
0.0 Health Risk Behaviors
Binge Drinking
—
0.0 Current Smoker 0.0
No Leisure Time for Physical Activity
Climate Change Exposures
Wildfire Risk
0.0 —
0.0 SLR Inundation Area 0.0
40 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 Children 76.4
Elderly 8.4
English Speaking
Foreign-born
91.4 28.4
94.9 —
Outdoor Workers
Climate Change Adaptive Capacity
Impervious Surface Cover
Traffic Density
92.2 33.5
49.7 —
Traffic Access
Other Indices
Hardship 0.2
Other Decision Support
2016 Voting
—
78.1 7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a) 4.00
99.0 No
Healthy Places Index Score for Project Location (b)
Project Located in a Designated Disadvantaged Community (Senate Bill 535) Project Located in a Low-Income Community (Assembly Bill 1550) Project Located in a Community Air Protection Program Community (Assembly Bill 617) No
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
41 / 42
Menlo School Site 2 Construction Defaults Detailed Report, 12/21/2023 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
Characteristics: Utility Information
Construction: Trips and VMT
PCE = Atherton clean energy provider
HRA = 0.5 mile trip length for localized emissions.
42 / 42
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Menlo College Site 1 Construction Defaults 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 Year, Unmitigated
2.3. Construction Emissions by Year, Mitigated
3. Construction Emissions Details
3.1. Demolition (2025) - Unmitigated
3.2. Demolition (2025) - Mitigated
3.3. Site Preparation (2025) - Unmitigated
3.4. Site Preparation (2025) - Mitigated
3.5. Grading (2025) - Unmitigated
1 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
3.6. Grading (2025) - Mitigated
3.7. Building Construction (2025) - Unmitigated
3.8. Building Construction (2025) - Mitigated
3.9. Paving (2025) - Unmitigated
3.10. Paving (2025) - Mitigated
3.11. Architectural Coating (2025) - Unmitigated
3.12. Architectural Coating (2025) - Mitigated
4. Operations Emissions Details
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
4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated
4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated
4.10.6. Avoided and Sequestered Emissions by Species - Mitigated
5. Activity Data
5.1. Construction Schedule
2 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
5.2. Off-Road Equipment
5.2.1. Unmitigated
5.2.2. Mitigated
5.3. Construction Vehicles
5.3.1. Unmitigated
5.3.2. Mitigated
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
5.5. Architectural Coatings
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
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
3 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
5.18.1.2. Mitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.1.2. Mitigated
5.18.2. Sequestration
5.18.2.1. Unmitigated
5.18.2.2. Mitigated
6. Climate Risk Detailed Report
6.1. Climate Risk Summary
6.2. Initial Climate Risk Scores
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
4 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
7.5. Evaluation Scorecard
7.6. Health & Equity Custom Measures
8. User Changes to Default Data
5 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
1. Basic Project Information
1.1. Basic Project Information
Data Field Value
Project Name
Construction Start Date
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
Menlo College Site 1 Construction Defaults
1/1/2025
—
Project/site
County
4.20 18.8
1000 El Camino Real, Atherton, CA 94027, USA
County San Mateo
City Atherton
Air District Bay Area AQMD
San Francisco Bay Area
1267
Air Basin
TA Z
EDFZ 1
Electric Utility
Gas Utility
Peninsula Clean Energy
Pacific Gas & Electric
App Version 2022.1.1.21
1.2. Land Use Types
Land Use Subtype Size Unit Lot Acreage
1.58 Building Area (sq ft) Landscape Area (sq Special Landscape Population 173
Description
—
ft) Area (sq ft)
Apartments Mid Rise 60.0 Dwelling Unit 57,600 0.00 —
6 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector # Measure Title
Construction
Construction
Construction
C-5 Use Advanced Engine Tiers
Water Exposed Surfaces
Limit Vehicle Speeds on Unpaved Roads
C-10-A
C-11
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. ROG NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
Daily, Summer (Max) — —
Unmit. 1.16 9.05
4.44 51%
—
0.33 0.06
81%
—
0.02 0.02
—
0.35 0.08
76%
—
0.30 0.06
80%
—
< 0.005
< 0.005
—
1,849
1,849
—
Mit. 0.40
66%
—
% Reduced
Daily, Winter (Max)
Unmit.
— — —
81.3 81.2
< 0.5%
—
14.1 4.44
68%
—
0.64 0.06
90%
—
7.09 2.77
61%
—
7.73 2.81
64%
—
0.59 0.06
90%
—
3.43 1.34
61%
—
2,509
2,509
—
Mit.
% Reduced
Average Daily (Max)
Unmit.
—
2.98 2.46
17%
—
6.09 2.63
57%
—
0.23 0.04
83%
—
0.12 0.05
56%
—
0.35 0.09
73%
—
0.21 0.04
82%
—
0.06 0.02
58%
—
1,220
1,220
—
Mit.
% Reduced
Annual (Max)
Unmit.
—
0.54 0.45
1.11 0.48
0.04 0.01
0.02 0.01
0.06 0.02
0.04 0.01
0.01 < 0.005
202
Mit. 202
7 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 % Reduced 17% 57% 83% 56% 73% 82% 58% —
2.2. Construction Emissions by Year, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
Daily - Summer —
(Max)
2025 1.16
—
9.05 —
0.33 —
0.02 —
0.35 —
0.30 —
< 0.005
—
1,849
Daily - Winter (Max) —
2025 81.3
—
14.1 —
0.64 —
7.09 —
7.73 —
0.59 —
3.43 —
2,509
Average Daily —
2025 2.98
—
6.09 —
0.23 —
0.12 —
0.35 —
0.21 —
0.06 —
1,220
Annual —
2025 0.54 1.11 0.04 0.02 0.06 0.04 0.01 202
2.3. Construction Emissions by Year, Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
Daily - Summer —
(Max)
2025 0.40
—
4.44 —
0.06 —
0.02 —
0.08 —
0.06 —
< 0.005
—
1,849
Daily - Winter (Max) —
2025 81.2
—
4.44 —
0.06 —
2.77 —
2.81 —
0.06 —
1.34 —
2,509
Average Daily —
2025 2.46
—
2.63 —
0.04 —
0.05 —
0.09 —
0.04 —
0.02 —
1,220
Annual —
2025 0.45 0.48 0.01 0.01 0.02 0.01 < 0.005 202
8 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
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
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 1.47
— — — — — — —
— — — — — — — —
13.9 —
0.57 —
— 0.57
0.00 0.00
—
0.52 —
— 2,502
Demolition — 0.00 —
0.00 —
0.00 0.00
—
Onsite truck
Average Daily
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment 0.08 0.76
—
0.03 —
— 0.03
0.00 0.00
—
0.03 —
— 137
Demolition —
Onsite truck
Annual
— 0.00
0.00 —
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment 0.01 0.14
—
0.01 —
— 0.01
0.00 0.00
—
0.01 —
— 22.7
Demolition —
Onsite truck
Offsite
— 0.00
0.00 —
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) — — — — — — — —
Daily, Winter (Max)
Worker
— — — — — — — —
0.03 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
6.54 0.00
0.00 —
Vendor
Hauling
Average Daily
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 0.36 9 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Vendor
Hauling
Annual
Worker
Vendor
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
—
< 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
0.06 0.00
0.00 3.2. Demolition (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 0.25
— — — — — — —
— — — — — — — —
2.27 —
0.05 —
— 0.05
0.00 0.00
—
0.05 —
— 2,502
Demolition — 0.00 —
0.00 —
0.00 0.00
—
Onsite truck
Average Daily
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment 0.01 0.12
—
< 0.005
—
— < 0.005
0.00 0.00
—
< 0.005
—
— 137
Demolition —
Onsite truck
Annual
— 0.00
0.00 —
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment < 0.005 0.02
—
< 0.005
—
— < 0.005
0.00 0.00
—
< 0.005
—
— 22.7
Demolition —
Onsite truck
Offsite
— 0.00
0.00 —
0.00 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) —
Daily, Winter (Max)
— — — — — — —
— — — — — — — —
10 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Worker
Vendor
0.03 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
—
< 0.005
0.00 6.54
0.00 0.00
—
Hauling
Average Daily
Worker
Vendor
0.00 0.00 0.00
— — —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
—
< 0.005
0.00 0.36
0.00 0.00
—
Hauling
Annual
0.00 0.00 0.00
— — —
Worker
Vendor
< 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 0.06
0.00 Hauling 0.00 0.00 0.00 0.00
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
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 1.31
— — — — — — —
— — — — — — — —
12.1 —
0.56 —
— 0.56
6.26 0.52
—
— 2,072
Dust From Material —
Movement
— 6.26 3.00
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily —
Off-Road Equipment 0.01 0.07
—
< 0.005
—
— < 0.005
0.03 < 0.005
—
— 11.4
Dust From Material —
Movement
— 0.03 0.02
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
11 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Off-Road Equipment < 0.005 0.01
—
< 0.005
—
— < 0.005
0.01 < 0.005
—
— 1.88
Dust From Material —
Movement
— 0.01 < 0.005
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) — — — — — — — —
Daily, Winter (Max)
Worker
— — — — — — — —
0.02 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
3.93 0.00
0.00 —
Vendor
Hauling
Average Daily
Worker < 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
0.02 0.00
0.00 —
Vendor
Hauling
Annual
Worker < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
Vendor
Hauling
3.4. Site Preparation (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 0.19
— — — — — — —
— — — — — — — —
1.01 —
0.04 —
— 0.04
2.44 0.04
—
— 2,072
Dust From Material —
Movement
— 2.44 1.17
12 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily —
Off-Road Equipment < 0.005 0.01
—
< 0.005
—
— < 0.005
0.01 < 0.005
—
— 11.4
Dust From Material —
Movement
— 0.01 0.01
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 0.00
—
0.00 —
0.00 — —
Off-Road Equipment < 0.005 < 0.005
—
< 0.005
—
— < 0.005
< 0.005
< 0.005
—
— 1.88
Dust From Material —
Movement
— < 0.005 < 0.005
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) — — — — — — — —
Daily, Winter (Max)
Worker
— — — — — — — —
0.02 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
3.93 0.00
0.00 —
Vendor
Hauling
Average Daily
Worker < 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
0.02 0.00
0.00 —
Vendor
Hauling
Annual
Worker < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
Vendor
Hauling
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) 13 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 1.51
— — — — — — —
— — — — — — — —
14.1 —
0.64 —
— 0.64
7.08 0.59
—
— 2,463
Dust From Material —
Movement
— 7.08 3.42
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily —
Off-Road Equipment 0.02 0.15
—
0.01 —
— 0.01
0.08 0.01
—
— 27.0
Dust From Material —
Movement
— 0.08 0.04
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment < 0.005 0.03
—
< 0.005
—
— < 0.005
0.01 < 0.005
—
— 4.47
Dust From Material —
Movement
— 0.01 0.01
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) — — — — — — — —
Daily, Winter (Max)
Worker
— — — — — — — —
0.02 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
5.23 0.00
0.00 —
Vendor
Hauling
Average Daily
Worker < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
0.06 0.00
0.00 Vendor
Hauling
14 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Annual
Worker
Vendor
Hauling
— — — — — — — —
< 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
0.01 0.00
0.00 3.6. Grading (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 0.23
— — — — — — —
— — — — — — — —
1.20 —
0.05 —
— 0.05
2.76 0.05
—
— 2,463
Dust From Material —
Movement
— 2.76 1.34
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily —
Off-Road Equipment < 0.005 0.01
—
< 0.005
—
— < 0.005
0.03 < 0.005
—
— 27.0
Dust From Material —
Movement
— 0.03 0.01
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment < 0.005 < 0.005
—
< 0.005
—
— < 0.005
0.01 < 0.005
—
— 4.47
Dust From Material —
Movement
— 0.01 < 0.005
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) —
Daily, Winter (Max)
— — — — — — —
— — — — — — — —
15 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Worker
Vendor
0.02 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
—
< 0.005
0.00 5.23
0.00 0.00
—
Hauling
Average Daily
Worker
Vendor
0.00 0.00 0.00
— — —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
—
< 0.005
0.00 0.06
0.00 0.00
—
Hauling
Annual
0.00 0.00 0.00
— — —
Worker
Vendor
< 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 0.01
0.00 Hauling 0.00 0.00 0.00 0.00
3.7. 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
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Off-Road Equipment 1.07
— — — — — — —
8.95 0.00
—
0.33 0.00
—
— 0.33
0.00 —
0.30 0.00
—
— 1,807
0.00 —
Onsite truck 0.00
—
0.00 —
0.00 Daily, Winter (Max) —
Off-Road Equipment 1.07 8.95
0.00 —
0.33 0.00
—
— 0.33
0.00 —
0.30 0.00
—
— 1,807
0.00 —
Onsite truck 0.00
—
0.00 —
0.00 Average Daily —
Off-Road Equipment 0.58 4.90
0.00 —
0.18 0.00
—
— 0.18
0.00 —
0.17 0.00
—
— 990
0.00 —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
Off-Road Equipment 0.11 0.89 0.03 — 0.03 0.03 — 164
16 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 0.00
— —
Daily, Summer (Max) — — — — — — — —
Worker 0.09 0.03
0.08 0.00
—
0.00 < 0.005
0.00 —
0.02 < 0.005
0.00 —
0.02 < 0.005
0.00 —
0.00 < 0.005
0.00 —
< 0.005
< 0.005
0.00 23.1
18.2 0.00
—
Vendor < 0.005
Hauling 0.00
Daily, Winter (Max)
Worker
— —
0.09 0.03
0.08 0.00
—
0.00 < 0.005
0.00 —
0.02 < 0.005
0.00 —
0.02 < 0.005
0.00 —
0.00 < 0.005
0.00 —
< 0.005
< 0.005
0.00 22.6
18.1 0.00
—
Vendor < 0.005
Hauling 0.00
Average Daily
Worker
— —
0.05 0.02
0.04 0.00
—
0.00 < 0.005
0.00 —
0.01 < 0.005
0.00 —
0.01 < 0.005
0.00 —
0.00 < 0.005
0.00 —
< 0.005
< 0.005
0.00 12.4
9.94 0.00
—
Vendor < 0.005
Hauling 0.00
Annual — —
Worker 0.01 < 0.005
0.01 0.00
0.00 < 0.005
0.00 < 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 0.00
< 0.005
0.00 < 0.005
< 0.005
0.00 2.05
1.65 0.00
Vendor < 0.005
Hauling 0.00
3.8. Building Construction (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Off-Road Equipment 0.30
— — — — — — —
4.34 0.00
—
0.06 0.00
—
— 0.06
0.00 —
0.06 0.00
—
— 1,807
0.00 —
Onsite truck 0.00
—
0.00 —
0.00 Daily, Winter (Max) —
17 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Off-Road Equipment 0.30 4.34
0.00 —
0.06 0.00
—
— 0.06
0.00 —
0.06 0.00
—
— 1,807
0.00 —
Onsite truck 0.00
—
0.00 —
0.00 Average Daily —
Off-Road Equipment 0.16 2.38
0.00 —
0.03 0.00
—
— 0.03
0.00 —
0.03 0.00
—
— 990
0.00 —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
Off-Road Equipment 0.03 0.43
0.00 —
0.01 0.00
—
— 0.01
0.00 —
0.01 0.00
—
— 164
0.00 —
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) — — — — — — — —
Worker 0.09 0.03
0.08 0.00
—
0.00 < 0.005
0.00 —
0.02 < 0.005
0.00 —
0.02 < 0.005
0.00 —
0.00 < 0.005
0.00 —
< 0.005
< 0.005
0.00 —
23.1 18.2
0.00 —
Vendor < 0.005
Hauling 0.00
Daily, Winter (Max)
Worker
—
0.09 0.03
0.08 0.00
—
0.00 < 0.005
0.00 —
0.02 < 0.005
0.00 —
0.02 < 0.005
0.00 —
0.00 < 0.005
0.00 —
< 0.005
< 0.005
0.00 —
22.6 18.1
0.00 —
Vendor < 0.005
Hauling 0.00
Average Daily
Worker
—
0.05 0.02
0.04 0.00
—
0.00 < 0.005
0.00 —
0.01 < 0.005
0.00 —
0.01 < 0.005
0.00 —
0.00 < 0.005
0.00 —
< 0.005
< 0.005
0.00 —
12.4 9.94
0.00 —
Vendor < 0.005
Hauling 0.00
Annual —
Worker 0.01 < 0.005
0.01 0.00
0.00 < 0.005
0.00 < 0.005
< 0.005
0.00 < 0.005
< 0.005
0.00 0.00
< 0.005
0.00 < 0.005
< 0.005
0.00 2.05
1.65 0.00
Vendor < 0.005
Hauling 0.00
3.9. Paving (2025) - Unmitigated
18 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 0.49
— — — — — — —
— — — — — — — —
4.63 —
0.20 —
— 0.20
—
0.19 —
— 995
Paving 0.00 —
0.00 —
— —
Onsite truck
Average Daily
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment 0.01 0.13
—
0.01 —
— 0.01
—
0.01 —
— 27.3
Paving 0.00 —
0.00 —
— —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment < 0.005 0.02
—
< 0.005
—
— < 0.005
—
< 0.005
—
— 4.51
Paving 0.00 —
0.00 —
— —
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) — — — — — — — —
Daily, Winter (Max)
Worker
— — — — — — — —
0.03 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
6.54 0.00
0.00 —
Vendor
Hauling
Average Daily
Worker < 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
0.18 0.00
0.00 —
Vendor
Hauling
Annual
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 0.03 19 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Vendor
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
3.10. Paving (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 0.14
— — — — — — —
— — — — — — — —
1.30 —
0.03 —
— 0.03
—
0.03 —
— 995
Paving 0.00 —
0.00 —
— —
Onsite truck
Average Daily
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment < 0.005 0.04
—
< 0.005
—
— < 0.005
—
< 0.005
—
— 27.3
Paving 0.00 —
0.00 —
— —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment < 0.005 0.01
—
< 0.005
—
— < 0.005
—
< 0.005
—
— 4.51
Paving 0.00 —
0.00 —
— —
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) — — — — — — — —
Daily, Winter (Max)
Worker
— — — — — — — —
0.03 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
6.54 0.00
0.00 —
Vendor
Hauling
Average Daily
20 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Worker
Vendor
Hauling
Annual
Worker
Vendor
Hauling
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
—
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
—
< 0.005
0.00 0.18
0.00 0.00
—
0.00 0.00 0.00 0.00 0.00
— — — — —
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 < 0.005
0.00 0.00
0.00 0.00
< 0.005
0.00 0.03
0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.11. Architectural Coating (2025) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D CO2e
— —
—
—
—
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 0.13
— — — — — —
— — — — — — —
0.88 —
0.03 —
— 0.03
—
0.03 —
134
Architectural —
Coatings
81.1 —
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily —
Off-Road Equipment < 0.005 0.02
—
< 0.005
—
— < 0.005
—
< 0.005
—
— 3.67
Architectural —
Coatings
2.22 — —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment < 0.005 < 0.005
—
< 0.005
—
— < 0.005
—
< 0.005
—
— 0.61
Architectural —
Coatings
0.41 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
21 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Offsite — — — — — — — —
Daily, Summer (Max) — — — — — — — —
Daily, Winter (Max)
Worker
— — — — — — — —
0.02 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
4.52 0.00
0.00 —
Vendor
Hauling
Average Daily
Worker < 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
0.12 0.00
0.00 —
Vendor
Hauling
Annual
Worker < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
0.02 0.00
0.00 Vendor
Hauling
3.12. Architectural Coating (2025) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location
Onsite
ROG
—
NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D CO2e
— —
—
—
—
—
Daily, Summer (Max) —
Daily, Winter (Max)
Off-Road Equipment 0.02
— — — — — —
— — — — — — —
0.65 —
< 0.005
—
— < 0.005
—
< 0.005
—
134
Architectural —
Coatings
81.1 —
Onsite truck 0.00
—
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 Average Daily —
Off-Road Equipment < 0.005 0.02 < 0.005 — < 0.005 < 0.005 — 3.67 22 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Architectural
Coatings
2.22 — — — — — — —
Onsite truck
Annual
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Off-Road Equipment < 0.005 < 0.005
—
< 0.005
—
— < 0.005
—
< 0.005
—
— 0.61
Architectural —
Coatings
0.41 — —
Onsite truck
Offsite
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
0.00 —
Daily, Summer (Max) — — — — — — — —
Daily, Winter (Max)
Worker
— — — — — — — —
0.02 0.00
0.00 —
0.01 0.00
0.00 —
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
4.52 0.00
0.00 —
Vendor
Hauling
Average Daily
Worker < 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
< 0.005
0.00 0.00
—
0.00 0.00
0.00 —
< 0.005
0.00 0.00
—
0.12 0.00
0.00 —
Vendor
Hauling
Annual
Worker < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
< 0.005
0.00 0.00
0.00 0.00
0.00 < 0.005
0.00 0.00
0.02 0.00
0.00 Vendor
Hauling
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated 23 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetation ROG NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D 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 ROG NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D CO2e
Daily, Summer (Max) — — —
—
—
—
—
—
—
—
—
—
—
—
Total —
—
—
—
—
— — — — —
Daily, Winter (Max) — — — — —
Total — — — — —
Annual
Total
— — — — —
— — — — —
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 ROG NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D CO2e
Daily, Summer (Max) — — —
—
—
—
—
—
—
—
—
—
Avoided —
—
—
—
— — — — —
Subtotal — — — — —
Sequestered
Subtotal
— — — — —
— — — — —
24 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Daily, Winter (Max)
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
Annual
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetation ROG NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D CO2e
Daily, Summer (Max) — — —
—
—
—
—
—
—
—
Total —
—
—
— — — — —
Daily, Winter (Max)
Total
— — — — —
— — — — —
25 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Annual
Total
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use ROG NOx
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E PM2.5D CO2e
Daily, Summer (Max) — — —
—
—
—
—
—
—
—
—
—
—
—
Total —
—
—
—
—
— — — — —
Daily, Winter (Max) — — — — —
Total — — — — —
Annual
Total
— — — — —
— — — — —
4.10.6. Avoided and Sequestered Emissions by Species - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species ROG NOx
—
—
—
—
—
—
—
—
—
—
—
PM10E
—
PM10D
—
PM10T
—
PM2.5E
—
PM2.5D
—
CO2e
Daily, Summer (Max) — —
Avoided —
—
—
—
—
—
—
—
—
—
— — — — — —
Subtotal — — — — — —
Sequestered
Subtotal
— — — — — —
— — — — — —
Removed
Subtotal
— — — — — —
— — — — — —
— — — — — — —
Daily, Winter (Max)
Avoided
— — — — — —
— — — — — —
Subtotal — — — — — —
26 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Sequestered
Subtotal
Removed
Subtotal
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Annual
Avoided
Subtotal
Sequestered
Subtotal
Removed
Subtotal
—
5. Activity Data
5.1. Construction Schedule
Phase Name
Demolition
Phase Type
Demolition
Site Preparation
Grading
Start Date End Date
1/29/2025
2/1/2025
Days Per Week
5.00 Work Days per Phase Phase Description
1/1/2025
1/30/2025
2/2/2025
2/8/2025
11/16/2025
12/1/2025
20.0 2.00
4.00 200
—
—
—
—
—
—
Site Preparation
Grading
5.00 2/7/2025 5.00
Building Construction
Paving
Building Construction
Paving
11/15/2025
11/30/2025
12/15/2025
5.00 5.00 10.0
Architectural Coating Architectural Coating 5.00 10.0
5.2. Off-Road Equipment
27 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
5.2.1. Unmitigated
Phase Name
Demolition
Equipment Type Fuel Type Engine Tier
Average
Number per Day
3.00 Hours Per Day
8.00 Horsepower
84.0 Load Factor
Tractors/Loaders/Backh Diesel 0.37
oes
Demolition
Demolition
Rubber Tired Dozers Diesel
Diesel
Average
Average
1.00 1.00
8.00 8.00
367 0.40
Concrete/Industrial 0.73
Saws
33.0 Site Preparation
Site Preparation
Site Preparation
Graders Diesel
Diesel
Average
Average
Average
1.00 1.00
1.00 8.00
7.00 8.00
148
367
84.0 0.41
0.40 0.37
Rubber Tired Dozers
Tractors/Loaders/Backh Diesel
oes
Grading
Grading
Graders Diesel Average
Average
1.00 2.00
8.00 7.00
148 0.41
Tractors/Loaders/Backh Diesel 0.37
oes
84.0 Grading Rubber Tired Dozers
Cranes
Diesel
Diesel
Diesel
Diesel
Average
Average
Average
Average
Average
1.00 1.00
1.00 1.00
1.00 8.00
6.00 6.00
8.00 6.00
367
367
82.0 14.0
84.0 0.40
0.29 0.20
0.74 0.37
Building Construction
Building Construction
Building Construction
Building Construction
Forklifts
Generator Sets
Tractors/Loaders/Backh Diesel
oes
Building Construction
Paving
Welders Diesel Average
Average
3.00 1.00
8.00 8.00
46.0 84.0
0.45 Tractors/Loaders/Backh Diesel 0.37
oes
Paving
Paving
Paving
Paving
Pavers Diesel
Diesel
Diesel
Diesel
Average
Average
Average
Average
1.00 1.00
1.00 1.00
6.00 8.00
7.00 6.00
81.0 89.0
36.0 10.0
0.42 0.36
0.38 0.56
Paving Equipment
Rollers
Cement and Mortar
Mixers
Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48 28 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
5.2.2. Mitigated
Phase Name
Demolition
Equipment Type Fuel Type Engine Tier
Tier 4 Final
Number per Day
3.00 Hours Per Day
8.00 Horsepower
84.0 Load Factor
Tractors/Loaders/Backh Diesel 0.37
oes
Demolition
Demolition
Rubber Tired Dozers Diesel
Diesel
Tier 4 Final
Tier 4 Final
1.00 1.00
8.00 8.00
367 0.40
Concrete/Industrial 0.73
Saws
33.0 Site Preparation
Site Preparation
Site Preparation
Graders Diesel
Diesel
Tier 4 Final
Tier 4 Final
Tier 4 Final
1.00 1.00
1.00 8.00
7.00 8.00
148
367
84.0 0.41
0.40 0.37
Rubber Tired Dozers
Tractors/Loaders/Backh Diesel
oes
Grading
Grading
Graders Diesel Tier 4 Final
Tier 4 Final
1.00 2.00
8.00 7.00
148 0.41
Tractors/Loaders/Backh Diesel 0.37
oes
84.0 Grading Rubber Tired Dozers
Cranes
Diesel
Diesel
Diesel
Diesel
Tier 4 Final
Tier 4 Final
Tier 4 Final
Average
1.00 1.00
1.00 1.00
1.00 8.00
6.00 6.00
8.00 6.00
367
367
82.0 14.0
84.0 0.40
0.29 0.20
0.74 0.37
Building Construction
Building Construction
Building Construction
Building Construction
Forklifts
Generator Sets
Tractors/Loaders/Backh Diesel
oes
Tier 4 Final
Building Construction
Paving
Welders Diesel Tier 4 Final
Tier 4 Final
3.00 1.00
8.00 8.00
46.0 84.0
0.45 Tractors/Loaders/Backh Diesel 0.37
oes
Paving
Paving
Paving
Paving
Pavers Diesel
Diesel
Diesel
Diesel
Tier 4 Final
Tier 4 Final
Tier 4 Final
Average
1.00 1.00
1.00 1.00
6.00 8.00
7.00 6.00
81.0 89.0
36.0 10.0
0.42 0.36
0.38 0.56
Paving Equipment
Rollers
Cement and Mortar
Mixers
Architectural Coating Air Compressors Diesel Tier 4 Final 1.00 6.00 37.0 0.48 29 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
5.3. Construction Vehicles
5.3.1. Unmitigated
Phase Name
Demolition
Trip Type
—
One-Way Trips per Day Miles per Trip
—
Vehicle Mix
— —
Demolition Worker
Vendor
Hauling
Onsite truck
—
12.5 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Demolition
Demolition 0.00
Demolition — HHDT
Site Preparation
Site Preparation
Site Preparation
Site Preparation
Site Preparation
Grading
— — —
Worker
Vendor
Hauling
Onsite truck
—
7.50 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
0.00 HHDT
— HHDT
— — —
Grading Worker
Vendor
Hauling
Onsite truck
—
10.0 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Grading
Grading 0.00
Grading — HHDT
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
— — —
Worker
Vendor
Hauling
Onsite truck
—
43.2 6.41
0.00 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
— — —
Paving Worker
Vendor
12.5 —
0.50 0.50
LDA,LDT1,LDT2
Paving HHDT,MHDT
30 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Paving Hauling
Onsite truck
—
0.00 —
0.50 —
HHDT
Paving HHDT
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
— — —
Worker 8.64
—
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Vendor
Hauling
Onsite truck
0.00 — HHDT
5.3.2. Mitigated
Phase Name
Demolition
Trip Type
—
One-Way Trips per Day Miles per Trip
—
Vehicle Mix
— —
Demolition Worker
Vendor
Hauling
Onsite truck
—
12.5 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Demolition
Demolition 0.00
Demolition — HHDT
Site Preparation
Site Preparation
Site Preparation
Site Preparation
Site Preparation
Grading
— — —
Worker
Vendor
Hauling
Onsite truck
—
7.50 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
0.00 HHDT
— HHDT
— — —
Grading Worker
Vendor
Hauling
Onsite truck
—
10.0 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Grading
Grading 0.00
Grading — HHDT
Building Construction
Building Construction
— — —
Worker 43.2 0.50 LDA,LDT1,LDT2
31 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Building Construction
Building Construction
Building Construction
Paving
Vendor
Hauling
Onsite truck
—
6.41 0.00
—
0.50 0.50
—
HHDT,MHDT
HHDT
HHDT
— — —
Paving Worker
Vendor
Hauling
Onsite truck
—
12.5 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
Paving
Paving 0.00
Paving — HHDT
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
— — —
Worker
Vendor
Hauling
Onsite truck
8.64 —
0.50 0.50
0.50 —
LDA,LDT1,LDT2
HHDT,MHDT
0.00 HHDT
— 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 Residential Exterior Area Coated Non-Residential Interior Area Non-Residential Exterior Area Coated (sq ft)
Parking Area Coated (sq ft)
—
(sq ft) (sq ft) Coated (sq ft)
Architectural Coating 116,640 38,880 0.00 0.00
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
Phase Name Material Imported (cy) Material Exported (cy) Acres Graded (acres) Material Demolished (sq. ft.) Acres Paved (acres) 32 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 Demolition
Site Preparation
Grading
0.00 —
0.00 —
0.00 1.88
4.00 0.00
— —
—
—
—
0.00 0.00
0.00 — —
Paving 0.00 0.00
5.6.2. Construction Earthmoving Control Strategies
Non-applicable. No control strategies activated by user.
5.7. Construction Paving
Land Use Area Paved (acres)
—
% Asphalt
Apartments Mid Rise 0%
5.8. Construction Electricity Consumption and Emissions Factors kWh per Year and Emission Factor (lb/MWh)
Year kWh per Year
0.00 CO2 CH4
0.03 N2O
2025 100.0 < 0.005
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
Vegetation Land Use Type Vegetation Soil Type Initial Acres Initial Acres
Final Acres
5.18.1.2. Mitigated
Vegetation Land Use Type Vegetation Soil Type Final Acres 33 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
Biomass Cover Type Initial Acres
Initial Acres
Final Acres
Final Acres
5.18.1.2. Mitigated
Biomass Cover Type
5.18.2. Sequestration
5.18.2.1. Unmitigated
Tree Type Number
Number
Electricity Saved (kWh/year)
Electricity Saved (kWh/year)
Natural Gas Saved (btu/year)
Natural Gas Saved (btu/year)
5.18.2.2. Mitigated
Tree Type
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
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
9.82 6.25
—
annual days of extreme heat
annual days with precipitation above 20 mm
meters of inundation depth
Wildfire 9.53 annual hectares burned
34 / 40
Menlo College Site 1 Construction Defaults Detailed Report, 12/21/2023 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 observed 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 received 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
Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Wildfire
Flooding
Drought
Snowpack Reduction
Air Quality Degradation
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 greatest 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
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat
Extreme Precipitation
Sea Level Rise
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
35 / 40