Attachment 9 - Health Risk Assessment — Santa Rosa City Council, August 19, 2025

ELM TREE STATION

GAS STATION HEALTH RISK

ASSESSMENT
87 4 N. Wright Road,
Santa Rosa, California
February 27, 2023
Prepared for:

Je
an Kapolchok
Kapolchok and Associates
843 Second St.

Santa Rosa, CA 95404
[email protected]
P
repared by:

Jam
es A. Reyff
William Popenuck
429 East Cotati Avenue
Cotati, CA 94931
(707) 794
-0400
I&R Project#: 23-007
Executive Summary
Potential health risk impacts associated with the construction and operation of a neighborhood commercial development
that includes a gas station located at 874 N. Wright Road in Santa Rosa were assessed. Toxic air contaminants that could be emitted from this project primarily include diesel exhaust from construction and traffic and gasoline vapors, primarily benzene, from transfer and storage of gasoline. This health risk assessment predicted increased cancer risk from the Project to be below thresholds of significance recommended by the Bay Area Air Quality Management District
(BAAQMD). Other health risk thresholds for increase hazard index and annual fine particulate matter (PM

2.5)
concentrations would not be exceeded.

Attachment 9

1 Introduction

The purpose of this report is to address the potential health risk impacts associated with the construction and operation of a proposed neighborhood commercial development that includes a gas station located at 874 N. Wright Road in Santa Rosa, California. The air quality impacts from this project would be associated with construction and operation of the gas station . Air pollutant emissions associated with the project were predicted using appropriate computer models. In addition, the potential health risk impacts from existing toxic air contaminant (TAC) sources affecting the nearby sensitive receptors were evaluated. The analysis was conducted following guidance provided by the Bay Area Air Quality Management District (BAAQMD).1

Project Description

The Project consists of a solar-powered (pumps) fueling station, electric vehicle charging area, neighborhood fresh food market and one -bedroom apartment ( 0.73-acre parcel). The Project includes a privately owned and maintained park for public use with a small retail building selling coffee, ice cream etc., picnic tables, bicycle racks and a small shelter (0.25-cre parcel). The Project includes a connection to the Joe Rodota trail that will provide an alternative route along the back of the park parcel thereby eliminating any potential conflict with entrance and exit from the neighborhood commercial parcel.

The Project includes a 6-pump, 12-fueling position gas station that would also dispense diesel fuel.

The amount of throughput for the gas dispensing facility (GDF) would be 438,000 gallons of unleaded gas and 150,000 gallons of diesel gas annually. The building would be a total of 3, 450 square-feet (sf) with an 806-sf apartment above the market and there would be 16 parking spaces, including 4 EV parking spaces.

Setting

The project is located in the portion of Sonoma County that is in the San Francisco Bay Area Air Basin. Ambient air quality standards have been established at both the State and federal level. The Bay Area meets all ambient air quality standards with the exception of ground- level ozone, respirable particulate matter (PM10), and fine particulate matter (PM2.5).

Air Pollutants of Concern

High ozone levels are caused by the cumulative emissions of reactive organic gases (ROG) and nitrogen oxides (NOX). These precursor pollutants react under certain meteorological conditions to form high ozone levels. Controlling t he emissions of these precursor pollutants is the focus of the Bay Area’s attempts to reduce ozone levels. The highest ozone levels in the Bay Area occur in the eastern and southern inland valleys that are downwind of air pollutant sources. High ozone levels aggravate respiratory and cardiovascular diseases, reduced lung function, and increase coughing and chest discomfort.

1 Bay Area Air Quality Management District, CEQA Air Quality Guidelines, May 2017.

2 Particulate matter is another problematic air pollutant of the Bay Area. Particulate matter is assessed and measured in terms of respirable particulate matter or particles that have a diameter of 10 micrometers or less (PM 10) and fine particulate matter where particles have a diameter of 2.5 micrometers or less (PM 2.5). Elevated concentrations of PM 10 and PM2.5 are the result of both region-wide (or cumulative) emissions and localized emissions. High particulate matter levels aggravate respiratory and cardiovascular diseases, reduce lung function, increase mortality (e.g., lung cancer), and result in reduced lung function growth in children.

Toxic Air Contaminants

Toxic air contaminants (TAC) are a broad class of compounds known to cause morbidity or mortality, often because they cause cancer. TACs are found in ambient air, especially in urban areas, and are caused by industry, agriculture, fuel combustion, and commercial operations (e.g., dry cleaners). TACs are typically found in low concentrations, even near their source (e.g., diesel particulate matter [DPM] near a freeway). Because chronic exposure can result in adverse health effects, TACs are regulated at the regional, State, and federal level.

DPM

Diesel exhaust is the predominant TAC in urban air and is estimated to represent about three - quarters of the cancer risk from TACs (based on the Bay Area average). According to the California Air Resources Board (CARB), diesel exhaust is a complex mixture of gases, vapors, and fine particles. This complexity makes the evaluation of health effects of diesel exhaust a complex scientific issue. Some of the chemicals in diesel exhaust, such as benzene and formaldehyde, have been previously identified as TACs by the CARB, and are listed as carcinogens either under the State's Proposition 65 or under the Federal Hazardous Air Pollutants programs. Health risks from TACs are estimated using the Office of Environmental Health Hazard Assessment (OEHHA) risk assessment guidelines, which were published in February of 2015. 2 See Attachment 1 for a detailed description of the health risk modeling methodology used in this assessment.

Non-Diesel Total Organic Gases

Gasoline-powered vehicles, particularly light-duty autos and trucks, emit TACs mostly in the form of total organic gases (TOG). TOG emissions associated with these types of vehicles occur primarily in two forms: running exhaust and evaporative running losses. Additional TOG emissions occur when starting a vehicle, especially cold vehicles. Mobile source TOG includes TACs. Emissions of these TACs are controlled through requirements of motor vehicle exhaust systems and the formulation of gasoline by the U.S. EPA and CARB

CARB has identified seven TACs of primary concern in gasoline as benzene, ethyl benzene, n- hexane, propylene, naphthalene, xylenes, and toluene. 3 Cancer risks are associated with three of

2 OEHHA, 2015. Air Toxics Hot Spots Program Risk Assessment Guidelines, The Air Toxics Hot Spots Program Guidance Manual for Preparation of Health Risk Assessments. Office of Environmental Health Hazard Assessment.

February.
3 CARB. 2022. Gasoline Service Station Industrywide Risk Assessment Technical Guidance . February 18, 2022.

3 these TACs (benzene, ethyl benzene, and naphthalene), all seven of these TACs cause non-cancer chronic (long term) health effects, and three of the TACs (benzene, toluene, and xylenes) cause non-cancer acute (short term) health effects.

Organic TAC emissions from fuel use are regulat ed in numerous ways that include standards for the formulation of gasoline, vehicle emission standards, and vapor control systems for storage, fuel dispensing facilities and vehicle on-board fuel systems.

Sensitive Receptors

There are groups of people more affected by air pollution than others. CARB has identified the following persons who are most likely to be affected by air pollution: children under 16, the elderly over 65, athletes, and people with cardiovascular and chronic respiratory diseases. Thes e groups are classified as sensitive receptors. Locations that may contain a high concentration of these sensitive population groups include residential areas, hospitals, daycare facilities, elder care facilities, and elementary schools. For cancer risk as sessments, children are the most sensitive receptors, since they are more susceptible to cancer causing TACs. Residential locations are assumed to include infants and small children. The closest sensitive receptors to the project site are the single-family residents to the east and south of the site as well as those to the north across State Route 12 (S.R. 12).The Project would include a single apartment residence.

Regulatory Setting

Bay Area Air Quality Management District (BAAQMD)

BAAQMD has jurisdiction over an approximately 5,600- square mile area, commonly referred to as the San Francisco Bay Area (Bay Area). The District’s boundary encompasses the nine San Francisco Bay Area counties, including Alameda County, Contra Costa County, Marin County, San Francisco County, San Mateo County, Santa Clara County, Napa County, southwestern Solano County, and southern Sonoma County.

BAAQMD is the lead agency in developing plans to address attainment and maintenance of the National Ambient A ir Quality Standards and California Ambient Air Quality Standards. The District also has permit authority over most types of stationary equipment utilized for the proposed project. The BAAQMD is responsible for permitting and inspection of stationary sourc es; enforcement of regulations, including setting fees, levying fines, and enforcement actions; and ensuring that public nuisances are minimized.

BAAQMD’s Community Air Risk Evaluation (CARE) program was initiated in 2004 to evaluate and reduce health risks associated with exposures to outdoor TACs in the Bay Area.4 The program examines TAC emissions from point sources, area sources, and on- road and off -road mobile sources with an emphasis on diesel exhaust, which is a major contributor to airborne health risk in California. The CARE program is an on-going program that encourages community involvement and input. The technical analysis portion of the CARE program is being implemented in three

4 See BAAQMD: https://www.baaqmd.gov/community-health/community-health-protection-program/community- air-risk-evaluation-care-program , accessed 2/18/2021.

4 phases that includes an assessment of the sources of TAC emissions, modeling and measure ment programs to estimate concentrations of TAC, and an assessment of exposures and health risks.

Throughout the program, information derived from the technical analyses will be used to focus emission reduction measures in areas wit h high TAC exposures and high density of sensitive populations. Risk reduction activities associated with the CARE program are focused on the most at-risk communities in the Bay Area. The BAAQMD has identified six communities as impacted:

Concord, Richmond/San Pablo, Western Alameda County, San José, Redwood City/East Palo Alto, and Eastern San Francisco.

Additionally, overburdened communities are areas located (i) within a census tract identified by the California Communities Environmental Health Screening Tool (CalEnviroScreen), Version

4.0 implemented by OEHHA, as having an overall score at or above the 70 th percentile, or (ii) within 1,000 feet of any such census tract.5 The project site is not located in a CARE area or within an overburdened a rea as identified by CalEnviroScreen as the Project site is scored at the 62 nd percentile.6

The BAAQMD California Environmental Quality Act ( CEQA) Air Quality Guide lines7 were prepared to assist in the evaluation of air quality impacts of projects and plans proposed within the Bay Area. The guidelines provide recommended procedures for evaluating potential air impacts during the environmental review process consistent with CEQA requirements including thresholds of significance, mitigation measures, and background air quality information. They also include assessment methodologies for air toxics, odors, and greenhouse gas emissions. Attachment 1 includes detailed health risk modeling methodology.

The Project is subject to BAAQMD permitting requirements. All gasoline dispensing facilities are required to have a Permit to Operate from the District, in accordance with Regulation 8 Rule 7 and include Phase I (vapor recovery du ring transfer of gasoline between any cargo tank and any stationary tank at GDF) and Phase II (vapor recovery during motor vehicle refueling operations from any stationary tank at GDF) systems. Projects involving modifications must be authorized by BAAQMD prior to construction. This includes the replacement or installation of tanks and/or vapor recovery lines, dispenser modifications and the addition of nozzles to a facility. For approval, the project must meet the toxic screening requirements listed in Regulation 2- 5. Based on the results of that screening, BAAQMD may impose limits on gasoline throughput for the facility.

City of Santa Rosa 2035 General Plan

The Santa Rosa 2035 General Plan includes goals, policies, and actions to reduce exposure of the City’s sensitive population to exposure of air pollution, toxic air contaminants, and GHG emissions. The following goals, policies, and actions are applicable to the proposed project:

5 See BAAQMD: https://www.baaqmd.gov/~/media/dotgov/files/rules/reg-2-permits/2021- amendments/documents/20210722_01_appendixd_mapsofoverburdenedcommunities -pdf.pdf?la=en , accessed 10/1/2021.
6 OEHAA, CalEnviroScreen 4.0 Indicator Maps https://oehha.ca.gov/calenviroscreen/report/calenviroscreen- 40 7 Bay Area Air Quality Management District, 2017. CEQA Air Quality Guidelines . May.

5 Air Quality
OSC-J-1: Review all new construction projects and require dust abatement actions as contained in the CEQA Handbook of the Bay Area Air Quality Management District.

OSC-J-3: Reduce particulate matter emissions from wood burning appliances through implementation of the city’s Wood Burning Appliance code.

Significance Thresholds

In June 2010, BAAQMD adopted thresholds of significance to assist in the review of projects under CEQA and these significance thresholds were contained in the District’s 2011 CEQA Air Quality Guidelines. These thresholds were designed to establish the level at which BAAQMD believed air pollution emissions would cause significant environmental impacts under CEQA. The thresholds were challenged through a series of court challenges and were mostly upheld. In 2017, BAAQMD updated its CEQA Air Quality Guidelines and included revised significance thresholds.

In 2022, BAAQMD revised its GHG thresholds, eliminating quantified emissions limits. The current BAAQMD thresholds were used in this analysis and are summarized in Table 1. Air quality impacts and community health risks are considered potentially significant if they exceed these thresholds.

Table 1. BAAQMD CEQA Significance Thresholds
Health Risks
and Hazards
Single Sources Within
1,000-foot Zone of
Influence
Combined Sources (Cumulative from all sources
within 1000-foot zone of influence)
Excess Cancer
Risk 10 per one million 100 per one million
Hazard Index 1.0 10.0
Annual PM2.5
Concentration 0.3µg/m3 0.8µg/m3
Note: PM2.5 = fine particulate matter or particulates with an aerodynamic diameter of 2.5µm or less.

6 Health Risk Impacts and Mitigation Measures

Project impacts related to increased community risk can occur by introducing a new source of TACs with the potential to adversely affect existing sensitive receptors in the project vicinity. This project would introduce new sources of TACs during construction (i.e., on- site construction and truck hauling emissions) and operation (i.e., mobile and stationary sources).

Project construction activity would generate dust and equipment exhaust that would affect nearby sensitive receptors. The project would have TAC emissions from the gasoline station and the generated traffic. Project impacts to existing sensitive receptors were addressed for temporary construction activities and long- term operational conditions. There are also several sources of existing TACs and localized air pollutants in the vicinity of the project. The impact of the existing sources of TAC was also assessed in terms of the cumulative risk that includes the project contribution.

Community Risk Methodology

Health risk impacts were addressed by predicting increased cancer risk, the increase in annual PM2.5 concentrations and computing the Hazard Index (HI) for non- cancer health risks. The risk impacts from the project are the combination of risks from construction and operation sources.

These sources include on- site construction activity, construction truck hauling, the GDF, and increased traffic from the project. To evaluate the increased cancer risks from the project, a 30 - year exposure period was used, per BAAQMD guidance, 8 with the sensitive receptors being exposed to both project construction and operation emissions during this timeframe.

The project increased cancer risk is computed by summing the project construction cancer risk and operation cancer risk contributions. Unlike the increased maximum cancer risk, the annual PM 2.5 concentration and HI values are not additive but based on the annual maximum values for the entirety of the project. The project maximally exposed individual (MEI) is identified as the sensitive receptor that is most impacted by the project’s construction and operation.

The methodology for computing community risks impacts is contained in Attachment 1. This involved the calculation of TAC and PM2.5 emissions, dispersion modeling of these emissions, and computations of cancer risk and non-cancer health effects.

Modeled Sensitive Receptors

Receptors for this assessment included locations where sensitive populations closest to the project would be present for extended periods of time (i.e., chronic exposures). This includes the existing residences to the surrounding of the site, as shown in Figure 1. Residential receptors are assumed to include all receptor groups (i.e., third trimester, infants, children, and adults) with almost continuous exposure to project emissions. While there are additional sensitive receptors within 1,000 feet of the project site, the receptors chosen are adequate to identify maximum impacts from the project.

8 BAAQMD, 2016. BAAQMD Air Toxics NSR Program Health Risk Assessment (HRA) Guidelines. December 2016.

7 Health Risk from Project Construction

Construction equipment and associated heavy-duty truck traffic generates diesel exhaust, which is a known TAC. These exhaust air pollutant emissions would not be considered to contribute substantially to existing or projected air quality violations. Construction exhaust emissions may still pose health risks for sensitive receptors such as surrounding residents. The primary community risk impacts associated with construction emissions are cancer risk and exposure to PM2.5. Diesel exhaust (i.e., DPM) poses both a potential health and nuisance impact to nearby receptors. A health risk assessment of the project construction activiti es was conducted that evaluated potential health effects to nearby sensitive receptors from construction emissions of DPM and PM 2.5.9 This assessment included dispersion modeling to predict the off -site concentrations resulting from project construction, so that increased cancer risks and non- cancer health effects could be evaluated.

CalEEMod Emissions Modeling

The California Emissions Estimator Model (CalEEMod) Online Version 2022.1 was used to estimate emissions from on-site construction activity, construction vehicle trips, and evaporative emissions. The project land use types and size, and anticipated construction schedule were input to CalEEMod. The CalEEMod model output along wi th construction inputs are included in Attachment 2.

The proposed project land uses were entered into CalEEMod as described in Table 2.

Table 2. Summary of Project Land Use Inputs
Project Land Uses Size Units Square Feet (sf) Acreage
Gasoline/Service Station 3.00 Pumps 3,271 0.32

CalEEMod computes annual emissions for construction that are based on the project type, size, and acreage. The model provides emission estimates for both on- site and off -site construction activities. On-site activities are primarily made up of construction equipment emissions, while off- site activity includes worker, hauling, and vendor traffic. The construction build- out scenario, including equipment list and schedule, were based on information generated using CalEEMod defaults for a project of this type and size.

Within each of the CalEEMod construct phases , the quantity of equipment to be used along with the average hours per day and total number of workdays were based on CalEEMod defaults . The construction schedule assumed that the earliest possible start date would be June 2023 and would be completed over a period of approximately 11 months.

Construction would produce traffic in the form of worker trips and truck traffic. The traffic-related emissions are based on worker and vendor trip estimates produced by CalEEMod and haul trips that were computed based on the estimate of estimate of soil material imported and/or exported to the site, and the estimate of concrete and asphalt truck trips. CalEEMod provides daily estimates

9 DPM is identified by California as a toxic air contaminant due to the potential to cause cancer.

8 of worker and vendor trips for each applicable phase. The total trips for worker and vendor trips were computed by multiplying the daily trip rate by the number of days in that phase. Haul trips for soil import/export were estimated by CalEEMod using the estimated grading volumes provided.10

The CalEEMod model provided total annual PM 10 (assumed to be diesel particulate m atter) and PM2.5 exhaust emissions for the off-road construction equipment and for exhaust emissions from on-road vehicles (haul trucks, vendor trucks, and worker vehicles) . Over the 2023 and 2024 construction periods the total DPM exhaust emissions , represented by PM 10 exhaust, would be

0.05 tons ( 100 pounds). The construction DPM emissions include on- road emissions resulting from haul truck travel during gr ading activities, worker travel, and vendor deliveries during building construction, with overall trip lengths of one mile to simulate travel on and near the site.

Fugitive PM 2.5 dust emissions were calculated by CalEEMod as 100 pounds for the overall construction period. The CalEEMod model output with emission calculations are provided in Attachment 2.

Dispersion Modeling

The U.S. EPA AERMOD dispersion model was used to predict DPM and PM2.5 concentrations at existing sensitive receptors in the project vicinity. The AERMOD modeling utilized two area sources to represent the on-site construction emissions, one for DPM exhaust emissions and one for fugitive PM 2.5 dust emissions. Area sources were used to repre sent the locations of on- site construction activities. Emissions were distributed evenly across the area sources. To represent the construction equipment exhaust emissions, a n emission release height of 6 m eters (20 feet) was used for the area sources. The elevated source height reflects the height of the equipment exhaust pipes and buoyancy of the exhaust plume. For modeling fugitive PM 2.5 emissions, a near ground level release height of 2 meters (6 feet) was used for the area sources . Emissions from on- road truck travel were included in the area sources. Emissions were modeled as occurring daily between 7 am - 4 pm, when the majority of construction activity would occur. Figure 1 shows the project site and nearby sensitive receptor locations where health impacts were evaluated.

The model used a 5 -year data set (20 13-2017) of hourly meteorological data from the Sonoma County Airport prepared for use with the AERMOD model by the BAAQMD . Annual DPM concentrations from construction activities wer e calculated for 2023 and 2024 with the annual average concentrations based on the 5 -year average concentrations fro m modeling 5 years of meteorological data. DPM concentrations were calculated at nearby residential receptors using receptor heights of 1.5 meters (5 feet) to represent the breathing heights of residents in the nearby single-family homes.

Construction Cancer Risk and Hazards

The maximum -modeled unmitigated (uncontrolled) annual DPM concentration occurred at a residential receptor south of the project site near the corner of N. Wright and Sebastopol Roads .

The location where the maximum impact occurred, or MEI, is identified in Figure 1. Increased cancer risks were calculated using the modeled annual DPM concentrations and BAAQMD

10 CalEEMod assumes each truck can carry 10 tons per load or 10 cubic yards of material.

9 recommended risk assessment methods for infant exposures at residential receptor s. Table 3 includes the report ed maximum community risk impacts associated with constru ction activities.

Community risk impacts include lifetime cancer risks, annual PM 2.5 concentrations and the potential non-cancer health effects due to chronic exposure to DPM.

Operational Community Risk Impacts

Local traffic generated by the project along with evaporative emissions from gasoline storage and fueling could lead to operational community risk impacts . Specific sources of emissions include traffic traveling to and from the project, traffic idling at the project, truck traffic accessing the site (importing fuel) and emissions from transfer and storage of gasoline (i.e., underground tank filling, tank breathing, and vehicle fueling and spillage). Impacts from each of these sources are addressed.

These sources are assumed to be operational well i nto the future (i.e., 30 years) . The year 20 25 was assumed to be the first full year of operation and was used as the year of analysis for generating emission rates. Emission rates are anticipated to decrease in the future due to improvements in exhaust systems and turnover of the fleet from older, more polluting vehicles, to newer cleaner vehicles.

Project Traffic-Related Emissions

Daily traffic generation was calculated as 1,506 primary trips per day based on the Project’s traffic analysis.11 The project uses generate 3,003 daily trips (2,993 customer trips and 10 on- site residence trips), but 1,497 are pass-by trips from vehicles already passing by or near the site. For health risk modeling purposes, on-site traffic includes all Project traffic while off-site traffic only included the new primary trips. The distribution of project traffic on local roads (N. Wright Road, Sebastopol Road, and Fulton Road) and project driveways was based on the traffic report for the project. Vehicles were assumed to travel at an average speed of 30 mph while on N. Wright Road and Sebastopol Road, 40 mph while on Fulton Road, and 5 mph while traveling on site at the station.

The number of fuel delivery trucks visiting that station was estimated as 67 trucks per year based on a total station fuel use of 588,000 gallons per year and a tanker truck capacity of 8,800 gallons.12 These trucks were assumed to arrive/depart the station on N. Wright Road from S.R. 12. Once on site they would travel to the underground fuel tank storage area, unload their fuel, and then depart the station . All fuel delivery trucks were assumed to be heavy heavy- duty diesel fuel trucks (HHDT). Both the customer vehicles and fuel delivery trucks were assumed to travel at a speed of 5 mph while at the station site. Delivery trucks were assumed to travel at 30 mph on N. Wright Road.

11 W-Trans, Traffic Impact Study for the Elm Tree Station Project, July 26, 2013. 12 CARB. 2022. Gasoline Service Station Industrywide Risk Assessment Technical Guidance . February 18, 2022.

10 Figure 1. Project Site and Sensitive Receptor Locations

The primary TACs of concern from project traffic are DPM and non-diesel mobile source air toxics found in total organic gases (TOG). This includes 14 different toxic components of TOG exhaust emissions and five different toxic components of TOG evaporative emissions from gasoline vehicles.13 DPM, TOG, and PM 2.5 emissions from customer vehicles were calculated using emission factors from the Caltrans version of the CARB EMFAC2017 emissions model, known as CT-EMFAC201714, and the increased project-related traffic described above. Vehicle emission processes modeled include running/idle exhaust , running evaporative losses for TOG, tire and brake wear, and fugitive road dust. Vehicle emissions are projected to decrease in the future and are reflected in the CT-EMFAC2017 emissions estimates. Inputs to the model include region (i.e., Sonoma County), type of road (for road dust calculation purposes), traffic mix assigned by CT -

13 BAAQMD. 2012. Recommended Methods for Screening and Modeling Local Risks and Hazard, Version 3.0. May. 14 California Department of Transportation. 2019. CT-EMFAC2017 User Guide. January.

Off-Site Residential Receptor Locations
Residential MEI Receptor

11 EMFAC2017 for the county (with BAAQMD recommended truck percentage for non -state highways in Sonoma County of 4.32 percent15), year of analysis (i.e., 2025), and season (Annual).

Year 2025 emissions were conservatively assumed as being representative of future conditions over the period that cancer risks are evaluated (30 years), since, as discussed above, overall vehicle emissions will decrease in the future.

The CT-EMFAC2017 emission factor model provided emission rates of DPM (assumed to be the same as PM 10 exhaust), PM2.5, and TOG exhaust emissions and evaporative loss emissions. For TOG emissions, the BAAQMD has developed weighted toxicity values for tailpipe and evaporative losses that incorporates the individual toxicity of each compound that make up TOG.16 The summation of all of the individual weighted toxicity values developed by BAAQMD is then cumulatively weighted and applied in the risk and hazard calculations. TOG emission rates used in the analysis are provided in Attachment 3.

All trucks delivering fuel to the station were assumed to be HHDT . The TAC of concern from these trucks is DPM. The EMFAC2021 model was used to calculate DPM and PM 2.5 exhaust emissions from the fuel delivery trucks at speeds of 5 mph on site and 30 mph on local roads.

Idling Emissions - Customer Vehicles and Fuel Delivery Trucks

Idling emissions due to customer vehicles queuing and fuel delivery trucks idling were computed by converting 5 mph emissions rates into hourly emissions for DPM, TOG, and PM2.5 for customer vehicles and DPM and PM2.5 for the delivery trucks. All customer vehicles using the facility were conservatively assumed to idle , on average, for 3 minutes during each visit to the station, while the fuel delivery trucks were assumed to idle for a total of 10 minutes while at the station. Annual emissions assumed station operating conditions of 24 hours per day and 365 days per year. The analysis of idling emissions is provided in Attachment 3.

Fueling Emissions

The transfer and storage of gasoline results in emissions of TOG and TAC compounds. Emissions of TOG and TACs were computed based on projected annual throughput of gasoline (i.e., 438,000 gallons) using emission factors developed by CARB. 17 CARB has identi fied seven TACs of primary concern in gasoline as benzene, ethyl benzene, n-hexane, propylene, naphthalene, xylenes, and toluene.18 Cancer risks are associated with three of these TACs (benzene, ethyl benzene, and naphthalene), all seven of these TACs caus e non-cancer chronic (long term) health effects, and three of the TACs (benzene, toluene, and xylenes) cause non- cancer acute (short term) health effects. Six of these TACs were included in this evaluation. Propylene was not included since it is only prese nt in winter gasoline ;19 it constitutes a very small fraction of the liquid and vapor fractions of gasoline which results in very low emissions and would result in negligible non-cancer chronic health effects. This methodology is consistent with recent BAA QMD permit evaluations

15 BAAQMD. 2012. Recommended Methods for Screening and Modeling Local Risks and Hazard, Version 3.0. May. 16 BAAQMD. 2012. Recommended Methods for Screening and Modeling Local Risks and Hazard, Version 3.0. May. 17 CARB. 2013. Revised Emissions Factors for Gasoline Marketing Operations at California Gasoline Dispensing Facilities.

December 23, 2013.
18 CARB. 2022. Gasoline Service Station Industrywide Risk Assessment Technical Guidance . February 18, 2022. 19 CARB. 2022. Gasoline Service Station Industrywide Risk Assessment Technical Guidance . February 18, 2022.

12 for GDFs which evaluate health effects from all the above TACs except propylene. The storage of diesel fuel results in negligible evaporative emissions.

The TOG emission factors are based on gasoline throughput and account for emiss ions from fuel storage tank loading and pressure driven (breathing) losses, motor vehicle refueling, spillage while refueling, and minor emissions from vapor permeation through gasoline dispensing hoses. The fueling emission factors take into account the effects of vehicles equipped with onboard refueling vapor recovery (ORVR) systems. ORVR systems were phased in beginning with 1998 model year passenger vehicles, and are now installed on all passenger, light -duty, and medium-duty vehicles manufactured since the 2006 model year. Emissions of TACs were computed using the weight fractions of the TACs in gasoline liquid and vapor and applied to the computed TOG emissions, as recommended by CARB. 20 For TACs with non -cancer acute health effects, maximum hourly emission rates were computed using the assumptions and methods recommenced by CARB. 21 Attachment 3 includes emissions calculation of TOG and TAC emissions from gasoline fueling, storage, and transfer for this project.

Dispersion Modeling

The US EPA AERMOD dispersion model was used to predict PM2.5, DPM and other TAC concentrations at the sensitive receptors (residences) in the vicinity of the project site. The modeling used the same (2013- 2017) meteorological data from the S onoma County Airport as previously discussed for the construction health risk modeling. TAC and PM 2.5 concentrations from on-site and off-site emission sources were calculated at nearby existing sensitive receptors using a receptor height of 1.5 meters (4.9 feet). Modeling was also conducted at the location of a future on-site residential unit above the Project’s Market at a receptor height of 5.8 meters (19 feet). Since the terrain elevation differences between the emission sources and receptors they would affect are relatively small, flat terrain was used for the modeling. Based on the land uses in the vicinity of the project rural conditions were assumed for the modeling. The modeling assumed the fuel station would operate 24 hours per day, 365 days per year.

On-site emission sou rces include project -related customer vehicles , fuel delivery trucks and operation of the fuel station. Off-site emission sources include project customer vehicles and fuel delivery trucks. The modeled emission sources and receptors where TAC concentration s were calculated are shown in Figure 2. Vehicle emissions were modeled as line-volume sources (a series of volume sources along a line) representing off-site travel routes within about 1,000 feet from the project site and on-site travel routes, as depicted in Figure 2. Vehicle line-volume source modeling parameters were based on EPA methods.22 Emissions of DPM, TOG, and PM 2.5 from idling customer vehicles were modeled using an area source with a source height of 1.0 meter. The area source w as placed in the vicinity of the fuel dispensing area. Fuel delivery truck idling was modeled with a point source at the storage tank filling area using San Joaquin Valley APCD recommended source parameters 23. Gasoline storage tank vents w ere modeled with tw o point

20 CARB. 2022. Gasoline Service Station Industrywide Risk Assessment Technical Guidance . February 18, 2022. 21 CARB. 2022. Gasoline Service Station Industrywide Risk Assessment Technical Guidance . February 18, 2022. 22 US EPA. 2015. Transportation Conformity Guidance for Quantitative Hot-spot Analyses in PM2.5 and PM10 Nonattainment and Maintenance Areas. November 2015.
23 San Joaquin Valley Air Pollution Control District, Guidance for Air Dispersion Modeling , Draft 01/07 Rev 2.0

13 sources in the storage tank area using CARB recommended source parameters 24. TAC emissions from the fuel station were modeled using volume sources as recommended by CARB. 25 Four volume sources with side lengths of 12.5 meters (41 feet) and a 5.5 -meter (18 feet) height were used. Two of the volume sources were used to represent vehicle fueling and hose loss emissions with a release height of 1.5 meter and the other two volume sources represented the emission from fuel spillage with a release height of 1.0 meter. Details on the emission calculations and dispersion modeling information for these sources are provided in Attachment 3.

Cancer Risk, PM2.5 and Hazards

Using the maximum modeled TACs, TOG and PM2.5 concentrations, individual cancer risks were computed using the most recent methods recommended by BAAQMD and OEHHA that include nearly continuous exposures with adjustments for infants and children. Based on modeled concentrations, cancer risks were calculated for 30-year residential exposures, assuming constant emissions at 2025 levels. Table 3 includes the excess cancer risk, annual PM2.5 concentration and the maximum acute or chronic hazards associated with the project operation at the locations of residential MEI. Figure 2 shows the location where the maximum impacts occur . Note that the maximum impacts from construction and operation occurred at the same receptor.

This analysis found that the combination of TAC emissions from construction and operation would not exceed the single-source thresholds of significance for community risk impacts in terms of excess lifetime cancer risk, annual PM2.5 concentrations and Hazard Index.

Table 3. Maximum Health Risk Impacts at the Off-site MEI Source Cancer Risk
(per million)
Maximum
Annual PM2.5
(µg/m3)
Maximum
Hazard
Index
Project Impact to Existing Receptors
Project Construction (2 years) 6.34 (infant) 0.07 <0.01 Project Operation (28 years) 0.87 0.02 0.34
Total (30 years) 7.21 0.07 0.34
BAAQMD Single-Source Threshold 10 0.3 1.0
Exceed Threshold? No No No Future On-Site Residential Occupants
Project Operation (30 years) 3.35 0.02 0.25
BAAQMD Single-Source Threshold 10 0.3 1.0
Exceed Threshold? No No No

There are potential planned residences to the east of the Project site that may be present during operation of the Project. These receptors were not modeled; however, their impacts would be less than the impacts for the on- site residential receptor . Those impacts were found to be below the thresholds.

24 CARB. 2022. Gasoline Service Station Industrywide Risk Assessment Technical Guidance. February 18, 2022. 25 CARB. 2022. Gasoline Service Station Industrywide Risk Assessment Technical Guidance . February 18, 2022.

14 Figure 2. Project Site, Sensitive Receptor Locations, and Modeled Emission Sources

Cumulative Health Risks of all TAC Sources at the Off-Site Project MEI

Community health risk assessments typically look at all substantial sources of TACs that are located within 1,000 feet of a project site (i.e., influence area) that can affect the sensitive receptor of greatest impact (i.e., the MEI) . These sources could include rail lines, highways, busy surface streets, and stationary sources identified by BAAQMD.

A review of the project area using traffic data collected by the traffic consultant indicated that four roadways within the influence area, S.R. 12, N. Wright Road, Sebastopol Road, and Fulton Road would have traffic exceeding 10,000 vehicles per day. Other nearby streets would have less than 10,000 vehicles per day and are considered negligible sources of TACs. A review of BAAQMD’s Permitted Stationary Sources 2020 geographic information systems (G IS) map tool did not Project Traffic on Fulton Road to/from Niorth
Project Traffic on Sebastopol Road to/from East
Fuel Delivery Trucks on Wright Road to/from S.R. 12
On-Site GDF Customer Traffic Route
On-Site Fuel Truck Travel Route
Off-Site Residential Receptor Locations
Residential MEI Receptor
Fuel Tank Vent Stack Locations
Fuel Truck Idling Modeled Stack Location
Project Traffic on Wright Road to/from South

15 identify stationary sources with the potential to affect the MEI. Health risk impacts from these sources upon the MEI are reported in Table 4. Details of the modeling and health risk calculations are included in Attachment 4.

Highways – S.R. 12

The project MEI is located near S.R. 12. Highway health risk screening data provided by BAAQMD was incorporated into this analysis. BAAQMD developed raster files with cancer risk and PM2.5 values for all highways/freeways, roadways (ADT > 30,000), and rail lines within the Bay Area. These raster files were used to screen the S.R. 12risks and hazards upon the Project MEI and project site. The risk values shown in the raster files were modele d using AERMOD and a 20x20-meter emissions grid. The raster file uses EMFAC2014 data for fleet mix and include the OEHHA 2015 factor.

The S.R. 12 screening level impacts are listed in Table 4 and included in Attachment 4. Refined modeling of the highway would have resulted in even lower risk values. Note that BAAQMD has found that non-cancer hazards were found to be minimal, so an HI value is not included.

Local Roadways – N. Wright Road, Sebastopol Road, and Fulton Road

A refined analysis of potential health impacts from vehicle traffic on N. Wright Road, Sebastopol Road, and Fulton Road was conducted since the roadway was estimated to have average daily traffic (ADT) exceeding 10,000 vehicles. The refined analysis involved predicting emissions for the future plus project traffic volume and mix of vehicle types on the roadway near the project site and using an atmospheric dispersion model to predict exposure to TACs. The associated cancer risks are then computed based on the modeled exposures. Attachment 1 includes a description of how health risk impacts, including cancer risk are computed.

Emissions Rates

This analysis involved the development of DPM, organic TACs, and PM2.5 emissions for traffic on N. Wright Road, Sebastopol Road, and Fulton Road using CT-EMFAC2017, as described above in the project traffic modeling . Hourly emissions rates were developed for DPM, organic TACs, and PM2.5 along the applicable segments of N. Wright Road, Sebastopol Road, and Fulton Road within 1,000 feet of the project site. TAC and PM2.5 concentrations at the MEI location were developed using these emissions rates with an air quality dispersion model (AERMOD). Roadway dispersion modeling was conducted similarly as described in the project traffic modeling above.

Maximum increased lifetime cancer risks and maximum annual PM2.5 concentrations for the MEI receptor were then computed using modeled TAC and PM 2.5 concentrations and BAAQMD methods and exposure parameters described in Attachment 1.

The Future plus Project ADT for N. Wright Road, Sebastopol Road, and Fulton Road was based on AM and PM peak-hour future traffic volumes for the nearby roadway provided by the project’s traffic data.26 The calculated ADT on N. Wright Road was 32,460 vehicles, on Sebastopol Road was 19,960 vehicles, and on Fulton Road was 44,360 vehicles. Note that existing traffic volumes

26 W-Trans, Traffic Impact Study for the Elm Tree Station Project, July 26, 2013.

16 are about 40 to 60% of future projected volumes. Average hourly traffic distributions for Sonoma County roadways were developed using the EMFAC model,27 which were then applied to the ADT volumes to obtain estimated hourly traffic volumes and emissions for the roadway.

Computed Cancer and Non-Cancer Health Impacts

The cancer risk, PM2.5 concentration, and HI impacts from N. Wright Road, Sebastopol Road, and Fulton Road on the project MEI are shown in Table 4. Figure 2 shows the roadway links modeled and receptor locations where concentrations were calculated. Details of the emission calculations, dispersion modeling, and cancer risk calculations for the receptors with the maximum cancer risk from traffic on N. Wright Road, Sebastopol Road, and Fulton Road are provided in Attachment 4.

BAAQMD Permitted Stationary Sources

Permitted stationary sources of air pollution near the project site were identified using BAAQMD’s Permitted Stationary Sources 2020 GIS map website.28 This mapping tool identifies the lo cation of nearby stationary sources and their estimated risk and hazard impacts. No sources within the project’s 1,000-foot influence area were identified using this tool.

Summary of Health Risks at the Project MEI

Table 4 reports both the project and cumulative community risk impacts at the sensitive receptors most affected by project construction and operation (i.e., the project MEI). T he project’s community risk from project construction and operational activities would not exceed the maximum increased cancer risk , annual PM 2.5 concentration, and hazard risk single-source threshold. In addition, the combined unmitigated cancer risk and HI values would not exceed their respective cumulative thresholds. The combined annual PM 2.5 concentration would equal the cumulative thresholds due to the concentration from future non- project traffic along existing roadways.

27 The Burden output from EMFAC2007, a previous version of CARB’s EMFAC model, was used for this since the current web-based version of EMFAC2021 does not include Burden type output with hour by hour traffic volume information.
28 BAAQMD, Web:
https://baaqmd.maps.arcgis.com/apps/webappviewer/index.html?id=845658c19eae4594b9f4b805fb9d89a3

17 Table 4. Cumulative Health Risk Impacts at the Off- and On-Site MEI Source Cancer Risk
(per million)
Maximum
Annual PM2.5
(µg/m3)
Chronic
Hazard
Index
Project Impact to Existing Receptors
Project Impact 7.21 0.00a 0.34
S.R. 12 (from BAAQMD Raster data) 3.42 0.07 -
N. Wright Rd. (32,460 ADT) 5.26 0.33 <0.01 Sebastopol Rd. (19,960 ADT) 4.28 0.30 <0.01
Fulton Road (44,360 ADT) 1.50 0.09 <0.01
Total 21.7 0.8 <0.4
BAAQMD Cumulative-Source Threshold 100 0.8 10.0
Exceed Threshold? No No No Future Residential Occupants
Project Impact 3.35 0.00a 0.25
S.R. 12 (from BAAQMD Raster data) 5.67 0.12 -
N. Wright Rd. (32,460 ADT) 1.89 0.11 <0.01 Sebastopol Rd. (19,960 ADT) 0.85 0.05 <0.01
Fulton Road (44,360 ADT) 3.32 0.19 <0.01
Total 15.08 0.5 <0.28
BAAQMD Cumulative-Source Threshold 100 0.8 10.0
Exceed Threshold? No No No a Project traffic that causes increased PM 2.5 concentrations included in cumulative traffic volumes modeled on local roadways.

The PM2.5 concentration from future traffic along existing roadways alone almost exceeds the cumulative threshold at 0.79 μg/m3. Cumulative risks equal the PM2.5 concentration threshold of

0.8 μg/m3 because of the influence from local roadways at the MEI . The projec t’s PM2.5 concentration represents 2 percent of the total PM 2.5 cumulative concentration. A ccording to BAAQMD, health risks would be less-than-significant to the MEI if the risks from the project are reduced below the single -source thresholds. 29 Therefore, the project would not substantially contribute to the total cumulative PM 2.5 concentration. The project would not be cumulatively considerable and mitigation would not be required on the part of the project to mitigate the exceedance of the cumulative source threshold for annual PM2.5 concentration.

29 Correspondence with Areana Flores, MSc, Environmental Planner, BAAQMD, February 23, 2021.

18 Supporting Documentation

Attachment 1 is the methodology used to compute health risk impacts, including the methods to compute increased cancer risk from exposure to project emissions.

Attachment 2 includes the CalEEMod output for project construction and operational criteria air pollutant. Also included are any modeling assumptions.

Attachment 3 is the health risk assessment. This includes the summary of the dispersion modeling and the cancer risk calculations for construction and operation. The AERMOD dispersion modeling files for this assessment, which are quite voluminous, are available upon request and would be provided in digital format.

Attachment 4 includes the cumulative health risk calcu lations from existing sources affecting the MEI and on-site residence.

Attachment 1: Health Risk Calculation Methodology

A health risk assessment (HRA) for exposure to Toxic Air Contaminates (TACs) requires the application of a risk characterization model to the results from the air dispersion model to estimate potential health risk at each sensitive receptor location. The State of California Office of Environmental Health Hazard Assessment (OEHHA) and California Air Resources Board (CARB) develop recommended methods for conducting health risk assessments. The most recent OEHHA risk assessment guidelines were published in February of 2015. 30 These guidelines incorporate substantial changes designed to provide for enhanced protection of children, as required by State law, compared to previous published risk assessment guidelines. CARB has provided additional guidance on implementing OEHHA’s recommended methods. 31 This HRA used the 2015 OEHHA risk assessment guidelines and CARB guidance. The BAAQMD has adopted recommended procedures for applying the newest OEHHA guidelines as part of Regulation 2, Rule 5: New Source Review of Toxic Air Contaminants. 32 Exposure parameters from the OEHH A guidelines and the recent BAAQMD HRA Guidelines were used in this evaluation.

Cancer Risk

Potential increased cancer risk from inhalation of TACs is calculated based on the TAC concentration over the period of exposure, inhalation dose, the TAC cancer potency factor, and an age sensitivity factor to reflect the greater sensitivity of infants and children to cancer causing TACs. The inhalation dose depends on a person’s breathing rate, exposure time and frequency and duration of exposure. These pa rameters vary depending on the age, or age range, of the persons being exposed and whether the exposure is considered to occur at a residential location or other sensitive receptor location.

The current OEHHA guidance recommends that cancer risk be calculated by age groups to account for different breathing rates and sensitivity to TACs. Specifically, they recommend evaluating risks for the third trimester of pregnancy to age zero, ages zero to less than two (infant exposure), ages two to less than 16 (chi ld exposure), and ages 16 to 70 (adult exposure). Age sensitivity factors (ASFs) associated with the different types of exposure are an ASF of 10 for the third trimester and infant exposures, an ASF of 3 for a child exposure, and an ASF of 1 for an adult exposure. Also associated with each exposure type are different breathing rates, expressed as liters per kilogram of body weight per day (L/kg-day) or liters per kilogram of body weight per 8- hour period for the case of worker or school child exposures. As recommended by the BAAQMD for residential exposures, 95 th percentile breathing rates are used for the third trimester and infant exposures, and 80th percentile breathing rates for child and adult exposures. For children at schools and daycare facilities, B AAQMD recommends using the 95 th percentile 8-hour breathing rates.

Additionally, CARB and the BAAQMD recommend the use of a residential exposure duration of

30 OEHHA, 2015. Air Toxics Hot Spots Program Risk Assessment Guidelines, The Air Toxics Hot Spots Program Guidance Manual for Preparation of Health Risk Assessments. Office of Environmental Health Hazard Assessment.

February.
31 CARB, 2015. Risk Management Guidance for Stationary Sources of Air Toxics. July 23. 32 BAAQMD, 2016. BAAQMD Air Toxics NSR Program Health Risk Assessment (HRA) Guidelines. December 2016.

30 years for sources with long-term emissions (e.g., roadways). For workers, assumed to be adults, a 25 -year exposure period is recommended by the BAAQMD. For school children a 9- year exposure period is recommended by the BAAQMD.

Under previous OEHHA and BAAQMD HRA guidance, residential receptors are assumed to be at their home 24 hours a day, or 100 percent of the time. In the 2015 Risk Assessment Guidance, OEHHA includes adjustments to exposure duration to account for the fraction of time at home (FAH), which can be less than 100 percent of the time, based on updated population and activity statistics. The FAH factors are age- specific and are: 0.85 for third trimester of pregnancy to less than 2 years old, 0.72 for ages 2 to less than 16 years, and 0.73 for ages 16 to 70 years. Use of the FAH factors is allowed by the BAAQMD if there are no schools in the project vicinity have a cancer risk of one in a million or greater assuming 100 percent exposure (FAH = 1.0).

Functionally, cancer risk is calculated using the following parameters and formulas:

Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 106 Where:

CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)

Inhalation Dose = Cair x DBR* x A x (EF/365) x 10-6
Where:

Cair = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
8HrBR = 8-hour breathing rate (L/kg body weight-8 hours) A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor

The health risk parameters used in this evaluation are summarized in Tables 1 and 2.

TABLE 1 - Health Risk Parameters used for Cancer Risk Calculations:

Table 2 - Cancer Potency Factors and Reference Exposure Levels Cancer Potency
Reference Exposure Levels
(μg/m3)
Factor Acute Chronic
TAC (mg/kg-day)-1 (1-hour) (annual ave)
DPM 1.10E+00 - 5
Benzene 1.00E-01 27 3
Ethylbenzene 8.70E-03 - 2,000
n-Hexane - - 7,000
Naphthalene 1.20E-01 - 9
Xylene - 22,000 700
Toluene - 5,000 420
TOG Exhaust 6.28E-03 3,283 284
TOG Evaporative 3.70E-04 762 120
Exposure Type  Infant Child Adult
Parameter Age Range  3rd
Trimester
0<2 2 < 16 16 - 30
Cancer Potency Factor (mg/kg-day)-1
(Refer to Table 2)
Daily Breathing Rate (L/kg-day) 80th Percentile Rate 273 758 572 261 Daily Breathing Rate (L/kg-day) 95th Percentile Rate 361 1,090 745 335 8-hour Breathing Rate (L/kg-8 hours) 95th Percentile Rate - 1,200 520 240 Inhalation Absorption Factor 1 1 1 1
Averaging Time (years) 70 70 70 70
Exposure Duration (years) 0.25 2 14 14*
Exposure Frequency (days/year) 350 350 350 350*
Age Sensitivity Factor 10 10 3 1
Fraction of Time at Home (FAH) 0.85-1.0 0.85-1.0 0.72-1.0 0.73* * An 8-hour breathing rate (8HrBR) is used for worker and school child exposures.

Non-Cancer Hazards

Non-cancer health hazards from TAC exposure are usually determined by comparing the predicted level of exposure to a chemical to the level of exposure that is not expected to cause any adverse effects (reference exposure level), even to the most susceptible people. Potential non-cancer health hazards from TAC exposure are expressed in terms of a hazard index (HI), which is the ratio of the TAC concentration to a reference exposure level (REL). OEHHA has defined acceptable concentration levels for contaminants that pose non- cancer health hazards. TAC con centrations below the REL are not expected to cause adverse health impacts, even for sensitive individuals.

The total HI is calculated as the sum of the HIs for each TAC evaluated and the total HI is compared to the BAAQMD significance thresholds to determine whether a significant non-cancer health impact from a project would occur.

Typically, for projects involving construction or for residential projects located near roadways with substantial TAC emissions, the primary TAC of concern with non- cancer health effects is diesel particulate matter (DPM). For DPM, the chronic inhalation REL is 5 micrograms per cubic meter (μg/m3).

Annual PM2.5 Concentrations

While not a TAC, fine particulate matter (PM 2.5) has been identified by the BAAQMD as a pollutant with potential non- cancer health effects that should be included when evaluating potential community health impacts under the California Environmental Quality Act (CEQA). The thresholds of significance for PM 2.5 (project level and cumulative) are in terms of an increase in the annual average concentration. When considering PM 2.5 impacts, the contribution from all sources of PM2.5 emissions should be included. For projects with potential impacts from nearby local roadways, the PM 2.5 impacts should include those from vehicle exhaust emissions, PM 2.5 generated from vehicle tire and brake wear, and fugitive emissions from re-suspended dust on the roads.

Attachment 2: CalEEMod Modeling Inputs and Outputs

Air Quality/Noise Construction Information Data Request Project Name: 874 N. Wright Road DEFAULTS
See Equipment Type TAB for type, horsepower and load factor Project Size 1 Dwelling Units 1.12 total project acres disturbed 806 s.f. residential Pile Driving? Y/N?
s.f. retail
s.f. office/commercial
Project include on-site GENERATOR OR FIRE PUMP during project OPERATION (not construction)? Y/N? ____
3,540 s.f. other, specify: Gas Station IF YES (if BOTH separate values) --> s.f. parking garage spaces Kilowatts/Horsepower: __________ s.f. parking lot spaces Fuel Type: _____________
Construction Days (i.e, M-F) to Location in project (Plans Desired if Available):

Construction Hours am to pm

DO NOT MULTIPLY EQUIPMENT HOURS/DAY BY THE QUANTITY OF EQUIPMENT Quantity Description HP Load Factor Hours/day
Total
Work
Days
Avg.

Hours per
day
HP
Annual
Hours Comments
Demolition Start Date: Total phase: Overall Import/Export Volumes End Date:

Concrete/Industrial Saws 81 0.73 #DIV/0! 0 Demolition Volume Excavators 158 0.38 #DIV/0! 0 Square footage of buildings to be demo lished Rubber-Tired Dozers 247 0.4 #DIV/0! 0 ( or total tons to be hauled) Tractors/Loaders/Backhoes 97 0.37 #DIV/0! 0 _0_ square feet or Other Equipment? _?_ Hauling volume (tons)
Any pavement demolished and hauled? _?_ tons
Site Preparation Start Date: 6/1/2023 Total phase: 2
End Date: 6/2/2023
1 Graders 187 0.41 8 2 8 1227
1 Rubber Tired Dozers 247 0.4 7 2 7 1383
1 Tractors/Loaders/Backhoes 97 0.37 8 2 8 574
Other Equipment?
Grading / Excavation Start Date: 6/3/2023 Total phase: 4 End Date: 6/8/2023 Soil Hauling Volume
Excavators 158 0.38 0 0 Export volume = 1,000 cubic yards? 1 Graders 187 0.41 8 4 8 2453 Import volume = 1,000 cubic yards? 1 Rubber Tired Dozers 247 0.4 8 4 8 3162
Concrete/Industrial Saws 81 0.73 0 0
2 Tractors/Loaders/Backhoes 97 0.37 7 4 7 2010
Other Equipment?
Trenching/Foundation Start Date: 6/3/2023 Total phase: 4 End Date: 6/8/2023
1 Tractor/Loader/Backhoe 97 0.37 8 4 8 1148
1 Excavators 158 0.38 8 4 8 1921
Other Equipment?
Building - Exterior Start Date: 6/9/2023 Total phase: 200 Cement Trucks? _34_ Total Round-Trips End Date: 3/14/2024
1 Cranes 231 0.29 6 200 6 80388 Electric? (Y/N) ___ Otherwise assumed d iesel 1 Forklifts 89 0.2 6 200 6 21360 Liquid Propane (LPG)? (Y/N) ___ Otherw ise Assumed diesel 1 Generator Sets 84 0.74 8 200 8 99456 Or temporary line power? (Y/N) _ __ 1 Tractors/Loaders/Backhoes 97 0.37 6 200 6 43068
3 Welders 46 0.45 8 200 8 99360
Other Equipment?
Building - Interior/Architectural Coating Start Date: 3/15/2024 To tal phase: 10 End Date: 3/29/2024
1 Air Compressors 78 0.48 6 6 3.6 1348
Aerial Lift 62 0.31 0 0
Other Equipment?
Paving Start Date: 3/30/2024 Total phase: 10
Start Date: 4/12/2024
1 Cement and Mortar Mixers 9 0.56 6 10 6 302
1 Pavers 130 0.42 6 10 6 3276
1 Paving Equipment 132 0.36 8 10 8 3802
1 Rollers 80 0.38 7 10 7 2128
1 Tractors/Loaders/Backhoes 97 0.37 8 10 8 2871
Other Equipment?
Additional Phases Start Date: Total phase:

Start Date:
#DIV/0! 0
#DIV/0! 0
#DIV/0! 0
#DIV/0! 0
#DIV/0! 0
Equipment types listed in "Equipment Types" worksheet tab.

Equipment listed in this sheet is to provide an example of inputs Complete one sheet for each project component
It is assumed that water trucks would be used during grading Add or subtract phases and equipment, as appropriate
Modify horsepower or load factor, as appropriate
Complete ALL Portions in Yellow
Asphalt? ___ cubic yards or __45_ round trips?

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Santa Rosa Gas Station Detailed Report
Table of Contents

1. Basic Project Information

1.1. Basic Project Information

1.2. Land Use Types

1.3. User-Selected Emission Reduction Measures by Emissions Sector

2. Emissions Summary

2.1. Construction Emissions Compared Against Thresholds

2.2. Construction Emissions by Y ear, Unmitigated

2.3. Construction Emissions by Y ear, Mitigated

2.4. Operations Emissions Compared Against Thresholds

2.5. Operations Emissions by Sector, Unmitigated

2.6. Operations Emissions by Sector, Mitigated

3. Construction Emissions Details

3.1. Site Preparation (2023) - Unmitigated

3.2. Site Preparation (2023) - Mitigated
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3.3. Grading (2023) - Unmitigated

3.4. Grading (2023) - Mitigated

3.5. Building Construction (2023) - Unmitigated

3.6. Building Construction (2023) - Mitigated

3.7. Building Construction (2024) - Unmitigated

3.8. Building Construction (2024) - Mitigated

3.9. Paving (2024) - Unmitigated

3.10. Paving (2024) - Mitigated

3.11. Architectural Coating (2024) - Unmitigated

3.12. Architectural Coating (2024) - Mitigated

3.13. Trenching (2023) - Unmitigated

3.14. Trenching (2023) - Mitigated

4. Operations Emissions Details

4.1. Mobile Emissions by Land Use

4.1.1. Unmitigated

4.1.2. Mitigated

4.2. Energy
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4.2.1. Electricity Emissions By Land Use - Unmitigated

4.2.2. Electricity Emissions By Land Use - Mitigated

4.2.3. Natural Gas Emissions By Land Use - Unmitigated

4.2.4. Natural Gas Emissions By Land Use - Mitigated

4.3. Area Emissions by Source

4.3.2. Unmitigated

4.3.1. Mitigated

4.4. Water Emissions by Land Use

4.4.2. Unmitigated

4.4.1. Mitigated

4.5. Waste Emissions by Land Use

4.5.2. Unmitigated

4.5.1. Mitigated

4.6. Refrigerant Emissions by Land Use

4.6.1. Unmitigated

4.6.2. Mitigated

4.7. Offroad Emissions By Equipment Type
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4.7.1. Unmitigated

4.7.2. Mitigated

4.8. Stationary Emissions By Equipment Type

4.8.1. Unmitigated

4.8.2. Mitigated

4.9. User Defined Emissions By Equipment Type

4.9.1. Unmitigated

4.9.2. Mitigated

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
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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

5.9. Operational Mobile Sources

5.9.1. Unmitigated

5.9.2. Mitigated
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5.10. Operational Area Sources

5.10.1. Hearths

5.10.1.1. Unmitigated

5.10.1.2. Mitigated

5.10.2. Architectural Coatings

5.10.3. Landscape Equipment

5.10.4. Landscape Equipment - Mitigated

5.11. Operational Energy Consumption

5.11.1. Unmitigated

5.11.2. Mitigated

5.12. Operational Water and Wastewater Consumption

5.12.1. Unmitigated

5.12.2. Mitigated

5.13. Operational Waste Generation

5.13.1. Unmitigated

5.13.2. Mitigated

5.14. Operational Refrigeration and Air Conditioning Equipment Santa Rosa Gas Station Detailed Report, 1/19/2023
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5.14.1. Unmitigated

5.14.2. Mitigated

5.15. Operational Off-Road Equipment

5.15.1. Unmitigated

5.15.2. Mitigated

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

5.18.1.2. Mitigated

5.18.1. Biomass Cover Type

5.18.1.1. Unmitigated

5.18.1.2. Mitigated

5.18.2. Sequestration
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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

7.5. Evaluation Scorecard

7.6. Health & Equity Custom Measures

8. User Changes to Default Data
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1. Basic Project Information

1.1. Basic Project Information
Data Field Value
Project Name Santa Rosa Gas Station
Lead Agency —
Land Use Scale Project/site
Analysis Level for Defaults County
Windspeed (m/s) 2.20
Precipitation (days) 24.4
Location 874 N Wright Rd, Santa Rosa, CA 95407, USA
County Sonoma-San Francisco
City Santa Rosa
Air District Bay Area AQMD
Air Basin San Francisco Bay Area
TAZ 954
EDFZ 2
Electric Utility Sonoma Clean Power
Gas Utility Pacific Gas & Electric

1.2. Land Use Types
Land Use Subtype Size Unit Lot Acreage Building Area (sq ft) Landscape Area (sq ft)
Special Landscape
Area (sq ft)
Population Description
Convenience Market
with Gas Pumps

3.00 1000sqft 1.12 3,540 0.00 0.00 — —
Single Family
Housing

1.00 Dwelling Unit 0.00 806 0.00 0.00 3.00 —
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1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector # Measure Title
Construction C-5 Use Advanced Engine Tiers
Construction C-10-A Water Exposed Surfaces
Construction C-11 Limit Vehicle Speeds on Unpaved Roads

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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Unmit. 2.18 27.2 1.01 8.36 9.37 0.93 3.77 4.71 14.7 8,444 Mit. 0.56 17.2 0.26 4.03 4.14 0.24 1.68 1.80 14.7 8,444 % Reduced 74% 37% 75% 52% 56% 74% 55% 62% — —
Daily, Winter
(Max)
— — — — — — — — — —
Unmit. 4.97 18.0 0.47 1.73 2.05 0.44 0.48 0.79 0.38 8,423 Mit. 4.85 17.1 0.26 1.73 1.87 0.24 0.48 0.61 0.38 8,423 % Reduced 2% 5% 45% — 9% 44% — 22% — —
Average Daily
(Max)
— — — — — — — — — —
Unmit. 0.55 7.59 0.20 0.62 0.83 0.19 0.20 0.39 1.94 3,107 Mit. 0.21 7.09 0.10 0.55 0.66 0.10 0.16 0.26 1.94 3,107 % Reduced 63% 7% 49% 11% 20% 48% 17% 32% — —
Annual (Max) — — — — — — — — — —
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Unmit. 0.10 1.38 0.04 0.11 0.15 0.03 0.04 0.07 0.32 514 Mit. 0.04 1.29 0.02 0.10 0.12 0.02 0.03 0.05 0.32 514
% Reduced 63% 7% 49% 11% 20% 48% 17% 32% — —

2.2. Construction Emissions by Y ear, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Y ear ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Daily - Summer
(Max)
— — — — — — — — — —
2023 2.18 27.2 1.01 8.36 9.37 0.93 3.77 4.71 10.8 8,345 2024 0.71 14.8 0.31 1.73 2.04 0.29 0.48 0.77 14.7 8,444 Daily - Winter
(Max)
— — — — — — — — — —
2023 1.29 18.0 0.47 1.25 1.72 0.44 0.35 0.79 0.28 7,447 2024 4.97 17.3 0.43 1.73 2.05 0.40 0.48 0.77 0.38 8,423 Average Daily — — — — — — — — — —
2023 0.55 7.59 0.20 0.62 0.83 0.19 0.20 0.39 1.94 3,107 2024 0.33 2.93 0.07 0.23 0.30 0.07 0.06 0.13 0.85 1,303 Annual — — — — — — — — — —
2023 0.10 1.38 0.04 0.11 0.15 0.03 0.04 0.07 0.32 514
2024 0.06 0.53 0.01 0.04 0.05 0.01 0.01 0.02 0.14 216

2.3. Construction Emissions by Y ear, Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Y ear ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Daily - Summer
(Max)
— — — — — — — — — —
2023 0.56 17.2 0.26 4.03 4.14 0.24 1.68 1.80 10.8 8,345 Santa Rosa Gas Station Detailed Report, 1/19/2023
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2024 0.37 14.5 0.13 1.73 1.87 0.13 0.48 0.61 14.7 8,444 Daily - Winter
(Max)
— — — — — — — — — —
2023 0.43 17.1 0.26 1.25 1.51 0.24 0.35 0.59 0.28 7,447 2024 4.85 16.8 0.26 1.73 1.87 0.24 0.48 0.61 0.38 8,423 Average Daily — — — — — — — — — —
2023 0.18 7.09 0.10 0.55 0.66 0.10 0.16 0.26 1.94 3,107 2024 0.21 2.86 0.04 0.23 0.27 0.04 0.06 0.10 0.85 1,303 Annual — — — — — — — — — —
2023 0.03 1.29 0.02 0.10 0.12 0.02 0.03 0.05 0.32 514
2024 0.04 0.52 0.01 0.04 0.05 0.01 0.01 0.02 0.14 216

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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Unmit. 11.8 9.18 0.14 4.66 4.80 0.13 0.84 0.98 796 15,628 Daily, Winter
(Max)
— — — — — — — — — —
Unmit. 11.1 10.6 0.14 4.66 4.80 0.13 0.84 0.98 736 14,895 Average Daily
(Max)
— — — — — — — — — —
Unmit. 9.74 5.81 0.07 2.07 2.14 0.07 0.37 0.44 746 7,396 Annual (Max) — — — — — — — — — —
Unmit. 1.78 1.06 0.01 0.38 0.39 0.01 0.07 0.08 123 1,224

2.5. Operations Emissions by Sector, Unmitigated
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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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Mobile 11.6 9.15 0.14 4.66 4.80 0.13 0.84 0.98 62.4 14,818 Area 0.14 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.79 Energy < 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 55.7 Water — — — — — — — — — 1.07
Waste — — — — — — — — — 18.2
Refrig. — — — — — — — — 734 734
Total 11.8 9.18 0.14 4.66 4.80 0.13 0.84 0.98 796 15,628 Daily, Winter
(Max)
— — — — — — — — — —
Mobile 11.0 10.6 0.14 4.66 4.80 0.13 0.84 0.98 1.62 14,086 Area 0.11 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Energy < 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 55.7 Water — — — — — — — — — 1.07
Waste — — — — — — — — — 18.2
Refrig. — — — — — — — — 734 734
Total 11.1 10.6 0.14 4.66 4.80 0.13 0.84 0.98 736 14,895 Average Daily — — — — — — — — — —
Mobile 9.61 5.78 0.07 2.07 2.13 0.07 0.37 0.44 12.0 6,586 Area 0.12 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.39 Energy < 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 55.7 Water — — — — — — — — — 1.07
Waste — — — — — — — — — 18.2
Refrig. — — — — — — — — 734 734
Total 9.74 5.81 0.07 2.07 2.14 0.07 0.37 0.44 746 7,396 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Annual — — — — — — — — — —
Mobile 1.75 1.06 0.01 0.38 0.39 0.01 0.07 0.08 1.98 1,090 Area 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.06 Energy < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 — 9.22 Water — — — — — — — — — 0.18
Waste — — — — — — — — — 3.01
Refrig. — — — — — — — — 122 122
Total 1.78 1.06 0.01 0.38 0.39 0.01 0.07 0.08 123 1,224

2.6. Operations Emissions by Sector, Mitigated
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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Mobile 11.6 9.15 0.14 4.66 4.80 0.13 0.84 0.98 62.4 14,818 Area 0.14 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.79 Energy < 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 55.7 Water — — — — — — — — — 1.07
Waste — — — — — — — — — 18.2
Refrig. — — — — — — — — 734 734
Total 11.8 9.18 0.14 4.66 4.80 0.13 0.84 0.98 796 15,628 Daily, Winter
(Max)
— — — — — — — — — —
Mobile 11.0 10.6 0.14 4.66 4.80 0.13 0.84 0.98 1.62 14,086 Area 0.11 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Energy < 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 55.7 Water — — — — — — — — — 1.07
Waste — — — — — — — — — 18.2
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Refrig. — — — — — — — — 734 734
Total 11.1 10.6 0.14 4.66 4.80 0.13 0.84 0.98 736 14,895 Average Daily — — — — — — — — — —
Mobile 9.61 5.78 0.07 2.07 2.13 0.07 0.37 0.44 12.0 6,586 Area 0.12 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.39 Energy < 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 55.7 Water — — — — — — — — — 1.07
Waste — — — — — — — — — 18.2
Refrig. — — — — — — — — 734 734
Total 9.74 5.81 0.07 2.07 2.14 0.07 0.37 0.44 746 7,396 Annual — — — — — — — — — —
Mobile 1.75 1.06 0.01 0.38 0.39 0.01 0.07 0.08 1.98 1,090 Area 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.06 Energy < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 — 9.22 Water — — — — — — — — — 0.18
Waste — — — — — — — — — 3.01
Refrig. — — — — — — — — 122 122
Total 1.78 1.06 0.01 0.38 0.39 0.01 0.07 0.08 123 1,224

3. Construction Emissions Details

3.1. Site Preparation (2023) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
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Off-Road
Equipment

1.54 15.1 0.72 — 0.72 0.66 — 0.66 — 2,070
Dust From
Material
Movement
— — — 6.26 6.26 — 3.00 3.00 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Off-Road
Equipment

0.01 0.08 < 0.005 — < 0.005 < 0.005 — < 0.005 — 11.3
Dust From
Material
Movement
— — — 0.03 0.03 — 0.02 0.02 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.02 < 0.005 — < 0.005 < 0.005 — < 0.005 — 1.88 Dust From
Material
Movement
— — — 0.01 0.01 — < 0.005 < 0.005 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.04 0.03 0.00 0.06 0.06 0.00 0.01 0.01 0.32 69.0 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.35 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.06 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

3.2. Site Preparation (2023) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.27 6.40 0.04 — 0.04 0.04 — 0.04 — 2,070
Dust From
Material
Movement
— — — 2.44 2.44 — 1.17 1.17 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.04 < 0.005 — < 0.005 < 0.005 — < 0.005 — 11.3 Dust From
Material
Movement
— — — 0.01 0.01 — 0.01 0.01 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
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1.88—< 0.005—< 0.005< 0.005—< 0.0050.01< 0.005Off-Road
Equipment
Dust From
Material
Movement
— — — < 0.005 < 0.005 — < 0.005 < 0.005 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.04 0.03 0.00 0.06 0.06 0.00 0.01 0.01 0.32 69.0 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.35 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.06 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

3.3. Grading (2023) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
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Off-Road
Equipment

1.78 17.5 0.83 — 0.83 0.77 — 0.77 — 2,462
Dust From
Material
Movement
— — — 7.10 7.10 — 3.43 3.43 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Off-Road
Equipment

0.02 0.19 0.01 — 0.01 0.01 — 0.01 — 27.0
Dust From
Material
Movement
— — — 0.08 0.08 — 0.04 0.04 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.04 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.47 Dust From
Material
Movement
— — — 0.01 0.01 — 0.01 0.01 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.05 0.04 0.00 0.08 0.08 0.00 0.02 0.02 0.42 92.0 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.09 7.12 0.06 1.13 1.19 0.06 0.32 0.37 9.85 5,162 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.95 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.08 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 0.05 56.5 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.16 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 9.36

3.4. Grading (2023) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.32 7.70 0.05 — 0.05 0.05 — 0.05 — 2,462
Dust From
Material
Movement
— — — 2.77 2.77 — 1.34 1.34 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.08 < 0.005 — < 0.005 < 0.005 — < 0.005 — 27.0 Dust From
Material
Movement
— — — 0.03 0.03 — 0.01 0.01 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
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4.47—< 0.005—< 0.005< 0.005—< 0.0050.02< 0.005Off-Road
Equipment
Dust From
Material
Movement
— — — 0.01 0.01 — < 0.005 < 0.005 — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.05 0.04 0.00 0.08 0.08 0.00 0.02 0.02 0.42 92.0 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.09 7.12 0.06 1.13 1.19 0.06 0.32 0.37 9.85 5,162 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.95 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.08 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 0.05 56.5 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.16 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 9.36

3.5. Building Construction (2023) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
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Off-Road
Equipment

1.19 9.81 0.41 — 0.41 0.38 — 0.38 — 1,807
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Off-Road
Equipment

1.19 9.81 0.41 — 0.41 0.38 — 0.38 — 1,807
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average Daily — — — — — — — — — —
Off-Road
Equipment

0.48 3.95 0.17 — 0.17 0.15 — 0.15 — 729
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment

0.09 0.72 0.03 — 0.03 0.03 — 0.03 — 121
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.01 0.01 0.00 0.01 0.01 0.00 < 0.005 < 0.005 0.06 13.7 Vendor < 0.005 0.03 < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 0.05 20.5 Hauling 0.10 7.75 0.06 1.23 1.29 0.06 0.35 0.41 10.7 5,616 Daily, Winter
(Max)
— — — — — — — — — —
Worker 0.01 0.01 0.00 0.01 0.01 0.00 < 0.005 < 0.005 < 0.005 12.8 Vendor < 0.005 0.03 < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 20.5 Hauling 0.09 8.13 0.06 1.23 1.29 0.06 0.35 0.41 0.28 5,606 Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.01 5.19 Vendor < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 8.26 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Hauling 0.04 3.24 0.02 0.49 0.51 0.02 0.14 0.16 1.87 2,262 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.86 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 1.37 Hauling 0.01 0.59 < 0.005 0.09 0.09 < 0.005 0.03 0.03 0.31 374

3.6. Building Construction (2023) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.33 8.95 0.20 — 0.20 0.18 — 0.18 — 1,807
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.33 8.95 0.20 — 0.20 0.18 — 0.18 — 1,807
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average Daily — — — — — — — — — —
Off-Road
Equipment

0.13 3.61 0.08 — 0.08 0.07 — 0.07 — 729
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment

0.02 0.66 0.01 — 0.01 0.01 — 0.01 — 121
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
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Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.01 0.01 0.00 0.01 0.01 0.00 < 0.005 < 0.005 0.06 13.7 Vendor < 0.005 0.03 < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 0.05 20.5 Hauling 0.10 7.75 0.06 1.23 1.29 0.06 0.35 0.41 10.7 5,616 Daily, Winter
(Max)
— — — — — — — — — —
Worker 0.01 0.01 0.00 0.01 0.01 0.00 < 0.005 < 0.005 < 0.005 12.8 Vendor < 0.005 0.03 < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 20.5 Hauling 0.09 8.13 0.06 1.23 1.29 0.06 0.35 0.41 0.28 5,606 Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.01 5.19 Vendor < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.01 8.26 Hauling 0.04 3.24 0.02 0.49 0.51 0.02 0.14 0.16 1.87 2,262 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.86 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 1.37 Hauling 0.01 0.59 < 0.005 0.09 0.09 < 0.005 0.03 0.03 0.31 374

3.7. Building Construction (2024) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Off-Road
Equipment

1.13 9.44 0.37 — 0.37 0.34 — 0.34 — 1,807
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Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average Daily — — — — — — — — — —
Off-Road
Equipment

0.16 1.37 0.05 — 0.05 0.05 — 0.05 — 262
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment

0.03 0.25 0.01 — 0.01 0.01 — 0.01 — 43.3
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Worker 0.01 0.01 0.00 0.01 0.01 0.00 < 0.005 < 0.005 < 0.005 12.5 Vendor < 0.005 0.03 < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 20.2 Hauling 0.09 7.82 0.06 1.23 1.29 0.06 0.35 0.41 0.28 5,533 Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 1.83 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 2.93 Hauling 0.01 1.12 0.01 0.18 0.18 0.01 0.05 0.06 0.67 802 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.30 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.49 Hauling < 0.005 0.20 < 0.005 0.03 0.03 < 0.005 0.01 0.01 0.11 133

3.8. Building Construction (2024) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Santa Rosa Gas Station Detailed Report, 1/19/2023
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Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.33 8.95 0.20 — 0.20 0.18 — 0.18 — 1,807
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average Daily — — — — — — — — — —
Off-Road
Equipment

0.05 1.30 0.03 — 0.03 0.03 — 0.03 — 262
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment

0.01 0.24 0.01 — 0.01 < 0.005 — < 0.005 — 43.3
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Worker 0.01 0.01 0.00 0.01 0.01 0.00 < 0.005 < 0.005 < 0.005 12.5 Vendor < 0.005 0.03 < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 20.2 Hauling 0.09 7.82 0.06 1.23 1.29 0.06 0.35 0.41 0.28 5,533 Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 1.83 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 2.93 Hauling 0.01 1.12 0.01 0.18 0.18 0.01 0.05 0.06 0.67 802 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.30 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.49 Hauling < 0.005 0.20 < 0.005 0.03 0.03 < 0.005 0.01 0.01 0.11 133

3.9. Paving (2024) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.53 4.90 0.23 — 0.23 0.21 — 0.21 — 995
Paving 0.00 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.53 4.90 0.23 — 0.23 0.21 — 0.21 — 995
Paving 0.00 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average Daily — — — — — — — — — —
Off-Road
Equipment

0.01 0.13 0.01 — 0.01 0.01 — 0.01 — 27.3
Paving 0.00 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.02 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.51 Paving 0.00 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.06 0.04 0.00 0.10 0.10 0.00 0.02 0.02 0.49 113 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.13 9.84 0.08 1.63 1.71 0.08 0.46 0.54 14.2 7,336 Daily, Winter
(Max)
— — — — — — — — — —
Worker 0.05 0.05 0.00 0.10 0.10 0.00 0.02 0.02 0.01 105 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.12 10.4 0.08 1.63 1.71 0.08 0.46 0.54 0.37 7,323 Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.01 2.90 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.28 < 0.005 0.04 0.05 < 0.005 0.01 0.01 0.17 201 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.48 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.05 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 0.03 33.2

3.10. Paving (2024) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.19 4.63 0.06 — 0.06 0.05 — 0.05 — 995
Paving 0.00 — — — — — — — — —
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Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.19 4.63 0.06 — 0.06 0.05 — 0.05 — 995
Paving 0.00 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average Daily — — — — — — — — — —
Off-Road
Equipment

0.01 0.13 < 0.005 — < 0.005 < 0.005 — < 0.005 — 27.3
Paving 0.00 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.02 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.51 Paving 0.00 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.06 0.04 0.00 0.10 0.10 0.00 0.02 0.02 0.49 113 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.13 9.84 0.08 1.63 1.71 0.08 0.46 0.54 14.2 7,336 Daily, Winter
(Max)
— — — — — — — — — —
Worker 0.05 0.05 0.00 0.10 0.10 0.00 0.02 0.02 0.01 105 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.12 10.4 0.08 1.63 1.71 0.08 0.46 0.54 0.37 7,323 Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.01 2.90 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.28 < 0.005 0.04 0.05 < 0.005 0.01 0.01 0.17 201 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.48 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 0.05 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 0.03 33.2

3.11. Architectural Coating (2024) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.14 0.91 0.03 — 0.03 0.03 — 0.03 — 134
Architectural
Coatings

4.83 — — — — — — — — —
Onsite truck 0.00 0.00 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 — < 0.005 — 3.67 Architectural
Coatings

0.13 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment
< 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.61 Santa Rosa Gas Station Detailed Report, 1/19/2023
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—————————0.02Architectural
Coatings
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 2.51 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.07 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.01 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

3.12. Architectural Coating (2024) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
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134—0.03—0.030.03—0.031.070.02Off-Road
Equipment
Architectural
Coatings

4.83 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average Daily — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 3.67 Architectural
Coatings

0.13 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.61 Architectural
Coatings

0.02 — — — — — — — — —
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 2.51 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.07 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
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Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.01 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

3.13. Trenching (2023) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.25 2.54 0.12 — 0.12 0.11 — 0.11 — 583
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 6.39 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 — 1.06 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.02 0.02 0.00 0.04 0.04 0.00 0.01 0.01 0.21 46.0 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.47 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.08 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

3.14. Trenching (2023) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Onsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Off-Road
Equipment

0.09 2.36 0.01 — 0.01 0.01 — 0.01 — 583
Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Off-Road
Equipment
< 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 6.39 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Off-Road
Equipment
< 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 1.06 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — —
Daily, Summer
(Max)
— — — — — — — — — —
Worker 0.02 0.02 0.00 0.04 0.04 0.00 0.01 0.01 0.21 46.0 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter
(Max)
— — — — — — — — — —
Average Daily — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.47 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — —
Worker < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 < 0.005 0.08 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
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14,76662.20.970.840.134.784.640.149.1211.6Convenience
Market with Gas
Pumps
Single Family
Housing

0.05 0.03 < 0.005 0.02 0.02 < 0.005 < 0.005 < 0.005 0.22 52.1 Total 11.6 9.15 0.14 4.66 4.80 0.13 0.84 0.98 62.4 14,818 Daily, Winter
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps

11.0 10.5 0.14 4.64 4.78 0.13 0.84 0.97 1.61 14,037
Single Family
Housing

0.04 0.04 < 0.005 0.02 0.02 < 0.005 < 0.005 < 0.005 0.01 49.5 Total 11.0 10.6 0.14 4.66 4.80 0.13 0.84 0.98 1.62 14,086 Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps

1.75 1.05 0.01 0.37 0.39 0.01 0.07 0.08 1.96 1,082
Single Family
Housing

0.01 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.02 8.07 Total 1.75 1.06 0.01 0.38 0.39 0.01 0.07 0.08 1.98 1,090

4.1.2. 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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps

11.6 9.12 0.14 4.64 4.78 0.13 0.84 0.97 62.2 14,766
Single Family
Housing

0.05 0.03 < 0.005 0.02 0.02 < 0.005 < 0.005 < 0.005 0.22 52.1 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Total 11.6 9.15 0.14 4.66 4.80 0.13 0.84 0.98 62.4 14,818 Daily, Winter
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps

11.0 10.5 0.14 4.64 4.78 0.13 0.84 0.97 1.61 14,037
Single Family
Housing

1.75 1.05 0.01 0.37 0.39 0.01 0.07 0.08 1.96 1,082
Single Family
Housing

0.01 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.02 8.07 Total 1.75 1.06 0.01 0.38 0.39 0.01 0.07 0.08 1.98 1,090

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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 20.7
Single Family
Housing
— — — — — — — — — 2.06
Total — — — — — — — — — 22.7
Daily, Winter
(Max)
— — — — — — — — — —
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Convenience
Market with Gas
Pumps
— — — — — — — — — 20.7
Single Family
Housing
— — — — — — — — — 2.06
Total — — — — — — — — — 22.7
Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 3.42
Single Family
Housing
— — — — — — — — — 0.34
Total — — — — — — — — — 3.76

4.2.2. Electricity Emissions By Land Use - 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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 20.7
Single Family
Housing
— — — — — — — — — 2.06
Total — — — — — — — — — 22.7
Daily, Winter
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 20.7
Single Family
Housing
— — — — — — — — — 2.06
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Total — — — — — — — — — 22.7
Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 3.42
Single Family
Housing
— — — — — — — — — 0.34
Total — — — — — — — — — 3.76

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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
< 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 33.0 Single Family
Housing

0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Total < 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 33.0 Daily, Winter
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
< 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 33.0 Single Family
Housing

0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Total < 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 33.0 Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps
< 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 — 5.46 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Single Family
Housing

0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Total < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 — 5.46

4.2.4. Natural Gas Emissions By Land Use - 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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
< 0.005 0.03 < 0.005 — < 0.005 < 0.005 — < 0.005 — 33.0 Single Family
Housing

0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Total < 0.005 0.01 < 0.005 — < 0.005 < 0.005 — < 0.005 — 5.46 Santa Rosa Gas Station Detailed Report, 1/19/2023
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4.3. Area Emissions by Source

4.3.2. 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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Hearths 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Consumer
Products

0.09 — — — — — — — — —
Architectural
Coatings

0.01 — — — — — — — — —
Landscape
Equipment

0.03 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.79 Total 0.14 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.79 Daily, Winter
(Max)
— — — — — — — — — —
Hearths 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Consumer
Products

0.09 — — — — — — — — —
Architectural
Coatings

0.01 — — — — — — — — —
Total 0.11 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Annual — — — — — — — — — —
Hearths 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Consumer
Products

0.02 — — — — — — — — —
Architectural
Coatings
< 0.005 — — — — — — — — —
Landscape
Equipment
< 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.06 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Total 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.06

4.3.1. Mitigated
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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Hearths 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00
Consumer
Products

0.09 — — — — — — — — —
Architectural
Coatings

0.01 — — — — — — — — —
Landscape
Equipment

0.09 — — — — — — — — —
Architectural
Coatings

0.02 — — — — — — — — —
Architectural
Coatings
< 0.005 — — — — — — — — —
Landscape
Equipment
< 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.06 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Total 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.06

4.4. Water Emissions by Land Use

4.4.2. 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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 0.94
Single Family
Housing
— — — — — — — — — 0.14
Total — — — — — — — — — 1.07
Daily, Winter
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 0.94
Single Family
Housing
— — — — — — — — — 0.14
Total — — — — — — — — — 1.07
Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 0.16
Single Family
Housing
— — — — — — — — — 0.02
Total — — — — — — — — — 0.18
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4.4.1. 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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 0.94
Single Family
Housing
— — — — — — — — — 0.14
Total — — — — — — — — — 1.07
Daily, Winter
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 0.94
Single Family
Housing
— — — — — — — — — 0.14
Total — — — — — — — — — 1.07
Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 0.16
Single Family
Housing
— — — — — — — — — 0.02
Total — — — — — — — — — 0.18

4.5. Waste Emissions by Land Use

4.5.2. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Santa Rosa Gas Station Detailed Report, 1/19/2023
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Land Use ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 17.0
Single Family
Housing
— — — — — — — — — 1.19
Total — — — — — — — — — 18.2
Daily, Winter
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 17.0
Single Family
Housing
— — — — — — — — — 1.19
Total — — — — — — — — — 18.2
Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 2.81
Single Family
Housing
— — — — — — — — — 0.20
Total — — — — — — — — — 3.01

4.5.1. 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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
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17.0—————————Convenience
Market with Gas
Pumps
Single Family
Housing
— — — — — — — — — 1.19
Total — — — — — — — — — 18.2
Daily, Winter
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 17.0
Single Family
Housing
— — — — — — — — — 1.19
Total — — — — — — — — — 18.2
Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — — 2.81
Single Family
Housing
— — — — — — — — — 0.20
Total — — — — — — — — — 3.01

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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — 734 734
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Single Family
Housing
— — — — — — — — 0.01 0.01
Total — — — — — — — — 734 734
Daily, Winter
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — 734 734
Single Family
Housing
— — — — — — — — 0.01 0.01
Total — — — — — — — — 734 734
Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — 122 122
Single Family
Housing
— — — — — — — — < 0.005 < 0.005
Total — — — — — — — — 122 122

4.6.2. 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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — 734 734
Single Family
Housing
— — — — — — — — 0.01 0.01
Total — — — — — — — — 734 734
Daily, Winter
(Max)
— — — — — — — — — —
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Convenience
Market with Gas
Pumps
— — — — — — — — 734 734
Single Family
Housing
— — — — — — — — 0.01 0.01
Total — — — — — — — — 734 734
Annual — — — — — — — — — —
Convenience
Market with Gas
Pumps
— — — — — — — — 122 122
Single Family
Housing
— — — — — — — — < 0.005 < 0.005
Total — — — — — — — — 122 122

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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Annual — — — — — — — — — —
Total — — — — — — — — — —

4.7.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Santa Rosa Gas Station Detailed Report, 1/19/2023
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Equipment Type ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Annual — — — — — — — — — —
Total — — — — — — — — — —

4.8. Stationary Emissions By Equipment Type

4.8.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipment Type ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Annual — — — — — — — — — —
Total — — — — — — — — — —

4.8.2. Mitigated
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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
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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) Equipment Type ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Annual — — — — — — — — — —
Total — — — — — — — — — —

4.9.2. Mitigated
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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
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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 R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Annual — — — — — — — — — —
Total — — — — — — — — — —

4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Total — — — — — — — — — —
Annual — — — — — — — — — —
Total — — — — — — — — — —
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4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Avoided — — — — — — — — — —
Subtotal — — — — — — — — — —
Sequestered — — — — — — — — — —
Subtotal — — — — — — — — — —
Removed — — — — — — — — — —
Subtotal — — — — — — — — — —
— — — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Avoided — — — — — — — — — —
Subtotal — — — — — — — — — —
Sequestered — — — — — — — — — —
Subtotal — — — — — — — — — —
Removed — — — — — — — — — —
Subtotal — — — — — — — — — —
— — — — — — — — — — —
Annual — — — — — — — — — —
Avoided — — — — — — — — — —
Subtotal — — — — — — — — — —
Sequestered — — — — — — — — — —
Subtotal — — — — — — — — — —
Removed — — — — — — — — — —
Subtotal — — — — — — — — — —
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— — — — — — — — — — —

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 R 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 R 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) Santa Rosa Gas Station Detailed Report, 1/19/2023
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Species ROG NOx PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T R CO2e Daily, Summer
(Max)
— — — — — — — — — —
Avoided — — — — — — — — — —
Subtotal — — — — — — — — — —
Sequestered — — — — — — — — — —
Subtotal — — — — — — — — — —
Removed — — — — — — — — — —
Subtotal — — — — — — — — — —
— — — — — — — — — — —
Daily, Winter
(Max)
— — — — — — — — — —
Avoided — — — — — — — — — —
Subtotal — — — — — — — — — —
Sequestered — — — — — — — — — —
Subtotal — — — — — — — — — —
Removed — — — — — — — — — —
Subtotal — — — — — — — — — —
— — — — — — — — — — —
Annual — — — — — — — — — —
Avoided — — — — — — — — — —
Subtotal — — — — — — — — — —
Sequestered — — — — — — — — — —
Subtotal — — — — — — — — — —
Removed — — — — — — — — — —
Subtotal — — — — — — — — — —
— — — — — — — — — — —
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5. Activity Data

5.1. Construction Schedule
Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Site Preparation Site Preparation 6/1/2023 6/2/2023 5.00 2.00 — Grading Grading 6/3/2023 6/8/2023 5.00 4.00 —
Building Construction Building Construction 6/9/2023 3/14/2024 5.00 200 — Paving Paving 3/30/2024 4/12/2024 5.00 10.0 —
Architectural Coating Architectural Coating 3/15/2024 3/28/2024 5.00 10.0 — Trenching Trenching 6/3/2023 6/8/2023 5.00 4.00 —

5.2. Off-Road Equipment

5.2.1. Unmitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Site Preparation Graders Diesel Average 1.00 8.00 148 0.41 Site Preparation Rubber Tired Dozers Diesel Average 1.00 7.00 367 0.40 Site Preparation Tractors/Loaders/Backh
oes
Diesel Average 1.00 8.00 84.0 0.37
Grading Graders Diesel Average 1.00 8.00 148 0.41
Grading Rubber Tired Dozers Diesel Average 1.00 8.00 367 0.40 Grading Tractors/Loaders/Backh
oes
Diesel Average 2.00 7.00 84.0 0.37
Building Construction Cranes Diesel Average 1.00 6.00 367 0.29 Building Construction Forklifts Diesel Average 1.00 6.00 82.0 0.20 Building Construction Generator Sets Diesel Average 1.00 8.00 14.0 0.74 Building Construction Tractors/Loaders/Backh
oes
Diesel Average 1.00 6.00 84.0 0.37
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Building Construction Welders Diesel Average 3.00 8.00 46.0 0.45 Paving Cement and Mortar
Mixers
Diesel Average 1.00 6.00 10.0 0.56
Paving Pavers Diesel Average 1.00 6.00 81.0 0.42
Paving Paving Equipment Diesel Average 1.00 8.00 89.0 0.36 Paving Rollers Diesel Average 1.00 7.00 36.0 0.38
Paving Tractors/Loaders/Backh
oes
Diesel Average 1.00 8.00 84.0 0.37
Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48 Trenching Tractors/Loaders/Backh
oes
Diesel Average 1.00 8.00 84.0 0.37
Trenching Tractors/Loaders/Backh
oes
Diesel Average 1.00 8.00 84.0 0.37

5.2.2. Mitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Site Preparation Graders Diesel Tier 4 Interim 1.00 8.00 148 0.41 Site Preparation Rubber Tired Dozers Diesel Tier 4 Interim 1.00 7.00 367 0.40 Site Preparation Tractors/Loaders/Backh
oes
Diesel Tier 4 Interim 1.00 8.00 84.0 0.37
Grading Graders Diesel Tier 4 Interim 1.00 8.00 148 0.41 Grading Rubber Tired Dozers Diesel Tier 4 Interim 1.00 8.00 367 0.40 Grading Tractors/Loaders/Backh
oes
Diesel Tier 4 Interim 2.00 7.00 84.0 0.37
Building Construction Cranes Diesel Tier 4 Interim 1.00 6.00 367 0.29 Building Construction Forklifts Diesel Tier 4 Interim 1.00 6.00 82.0 0.20 Building Construction Generator Sets Diesel Average 1.00 8.00 14.0 0.74 Building Construction Tractors/Loaders/Backh
oes
Diesel Tier 4 Interim 1.00 6.00 84.0 0.37
Building Construction Welders Diesel Tier 4 Interim 3.00 8.00 46.0 0.45 Santa Rosa Gas Station Detailed Report, 1/19/2023
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Paving Cement and Mortar
Mixers
Diesel Average 1.00 6.00 10.0 0.56
Paving Pavers Diesel Tier 4 Interim 1.00 6.00 81.0 0.42 Paving Paving Equipment Diesel Tier 4 Interim 1.00 8.00 89.0 0.36 Paving Rollers Diesel Tier 4 Interim 1.00 7.00 36.0 0.38 Paving Tractors/Loaders/Backh
oes
Diesel Tier 4 Interim 1.00 8.00 84.0 0.37
Architectural Coating Air Compressors Diesel Tier 4 Interim 1.00 6.00 37.0 0.48 Trenching Tractors/Loaders/Backh
oes
Diesel Tier 4 Interim 1.00 8.00 84.0 0.37
Trenching Tractors/Loaders/Backh
oes
Diesel Tier 4 Interim 1.00 8.00 84.0 0.37

5.3. Construction Vehicles

5.3.1. Unmitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Site Preparation — — — —
Site Preparation Worker 7.50 11.7 LDA,LDT1,LDT2
Site Preparation Vendor — 8.40 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck — — HHDT
Grading — — — —
Grading Worker 10.0 11.7 LDA,LDT1,LDT2
Grading Vendor — 8.40 HHDT,MHDT
Grading Hauling 62.5 20.0 HHDT
Grading Onsite truck — — HHDT
Building Construction — — — —
Building Construction Worker 1.49 11.7 LDA,LDT1,LDT2
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Building Construction Vendor 0.69 8.40 HHDT,MHDT
Building Construction Hauling 68.0 20.0 HHDT
Building Construction Onsite truck — — HHDT
Paving — — — —
Paving Worker 12.5 11.7 LDA,LDT1,LDT2
Paving Vendor — 8.40 HHDT,MHDT
Paving Hauling 90.0 20.0 HHDT
Paving Onsite truck — — HHDT
Architectural Coating — — — —
Architectural Coating Worker 0.30 11.7 LDA,LDT1,LDT2
Architectural Coating Vendor — 8.40 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck — — HHDT
Trenching — — — —
Trenching Worker 5.00 11.7 LDA,LDT1,LDT2
Trenching Vendor — 8.40 HHDT,MHDT
Trenching Hauling 0.00 20.0 HHDT
Trenching Onsite truck — — HHDT

5.3.2. Mitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Site Preparation — — — —
Site Preparation Worker 7.50 11.7 LDA,LDT1,LDT2
Site Preparation Vendor — 8.40 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck — — HHDT
Grading — — — —
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Grading Worker 10.0 11.7 LDA,LDT1,LDT2
Grading Vendor — 8.40 HHDT,MHDT
Grading Hauling 62.5 20.0 HHDT
Grading Onsite truck — — HHDT
Building Construction — — — —
Building Construction Worker 1.49 11.7 LDA,LDT1,LDT2
Building Construction Vendor 0.69 8.40 HHDT,MHDT
Building Construction Hauling 68.0 20.0 HHDT
Building Construction Onsite truck — — HHDT
Paving — — — —
Paving Worker 12.5 11.7 LDA,LDT1,LDT2
Paving Vendor — 8.40 HHDT,MHDT
Paving Hauling 90.0 20.0 HHDT
Paving Onsite truck — — HHDT
Architectural Coating — — — —
Architectural Coating Worker 0.30 11.7 LDA,LDT1,LDT2
Architectural Coating Vendor — 8.40 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck — — HHDT
Trenching — — — —
Trenching Worker 5.00 11.7 LDA,LDT1,LDT2
Trenching Vendor — 8.40 HHDT,MHDT
Trenching Hauling 0.00 20.0 HHDT
Trenching Onsite truck — — HHDT

5.4. Vehicles
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5.4.1. Construction Vehicle Control Strategies
Non-applicable. No control strategies activated by user.

5.5. Architectural Coatings
Phase Name Residential Interior Area Coated
(sq ft)
Residential Exterior Area Coated
(sq ft)
Non-Residential Interior Area
Coated (sq ft)
Non-Residential Exterior Area
Coated (sq ft)
Parking Area Coated (sq ft)
Architectural Coating 1,632 544 5,310 1,770 —

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) Site Preparation — — 1.88 0.00 —
Grading 1,000 1,000 4.00 0.00 —
Paving 0.00 0.00 0.00 0.00 0.01

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
Convenience Market with Gas Pumps 0.00 0%
Single Family Housing 0.01 0%

5.8. Construction Electricity Consumption and Emissions Factors kWh per Y ear and Emission Factor (lb/MWh)
Y ear kWh per Y ear CO2 CH4 N2O
2023 0.00 39.5 0.03 < 0.005
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2024 0.00 39.5 0.03 < 0.005

5.9. Operational Mobile Sources

5.9.1. Unmitigated
Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Y ear VMT/Weekday VMT/Saturday VMT/Sunday VMT/Y ear Convenience Market
with Gas Pumps
2,536 2,536 2,536 925,801 3,571 16,356 16,356 2,636,747 Single Family
Housing

10.0 10.1 9.06 3,607 56.8 57.4 51.5 20,488

5.9.2. Mitigated
Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Y ear VMT/Weekday VMT/Saturday VMT/Sunday VMT/Y ear Convenience Market
with Gas Pumps
2,536 2,536 2,536 925,801 3,571 16,356 16,356 2,636,747 Single Family
Housing

10.0 10.1 9.06 3,607 56.8 57.4 51.5 20,488

5.10. Operational Area Sources

5.10.1. Hearths

5.10.1.1. Unmitigated
Hearth Type Unmitigated (number)
Single Family Housing —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
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No Fireplaces 0
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0

5.10.1.2. Mitigated
Hearth Type Unmitigated (number)
Single Family Housing —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 0
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 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
(sq ft)
Parking Area Coated (sq ft)
1632.1499999999999 544 5,310 1,770 —

5.10.3. Landscape Equipment
Season Unit Value
Snow Days day/yr 0.00
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Summer Days day/yr 180

5.10.4. Landscape Equipment - Mitigated
Season Unit Value
Snow Days day/yr 0.00
Summer Days day/yr 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) CO2 CH4 N2O Natural Gas (kBTU/yr) Convenience Market with Gas
Pumps
181,901 39.5 0.0330 0.0040 102,643
Single Family Housing 18,086 39.5 0.0330 0.0040 0.00

5.11.2. Mitigated
Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr) CO2 CH4 N2O Natural Gas (kBTU/yr) Convenience Market with Gas
Pumps
181,901 39.5 0.0330 0.0040 102,643
Single Family Housing 18,086 39.5 0.0330 0.0040 0.00

5.12. Operational Water and Wastewater Consumption

5.12.1. Unmitigated
Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Santa Rosa Gas Station Detailed Report, 1/19/2023
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Convenience Market with Gas Pumps 222,218 0.00
Single Family Housing 32,237 0.00

5.12.2. Mitigated
Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Convenience Market with Gas Pumps 222,218 0.00
Single Family Housing 32,237 0.00

5.13. Operational Waste Generation

5.13.1. Unmitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Convenience Market with Gas Pumps 9.02 0.00
Single Family Housing 0.21 0.00

5.13.2. Mitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Convenience Market with Gas Pumps 9.02 0.00
Single Family Housing 0.21 0.00

5.14. Operational Refrigeration and Air Conditioning Equipment

5.14.1. Unmitigated
Land Use Type Equipment Type Refrigerant GWP Quantity (kg) Operations Leak Rate Service Leak Rate Times Serviced Convenience Market
with Gas Pumps
Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
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18.016.516.526.53,922R-404AConvenience Market
with Gas Pumps
Supermarket
refrigeration and
condensing units
Single Family Housing Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Single Family Housing Household refrigerators
and/or freezers
R-134a 1,430 0.12 0.60 0.00 1.00

5.14.2. Mitigated
Land Use Type Equipment Type Refrigerant GWP Quantity (kg) Operations Leak Rate Service Leak Rate Times Serviced Convenience Market
with Gas Pumps
Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
Convenience Market
with Gas Pumps
Supermarket
refrigeration and
condensing units
R-404A 3,922 26.5 16.5 16.5 18.0
Single Family Housing Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Single Family Housing Household refrigerators
and/or freezers
R-134a 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

5.15.2. Mitigated
Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Santa Rosa Gas Station Detailed Report, 1/19/2023
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5.16. Stationary Sources

5.16.1. Emergency Generators and Fire Pumps
Equipment Type Fuel Type Number per Day Hours per Day Hours per Y ear Horsepower Load Factor

5.16.2. Process Boilers
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

5.18.1.2. Mitigated
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
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5.18.1.2. Mitigated
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)

5.18.2.2. Mitigated
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 11.2 annual days of extreme heat Extreme Precipitation 14.1 annual days with precipitation above 20 mm Sea Level Rise 0.00 meters of inundation depth
Wildfire 0.00 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 (2040–2059 average under RCP 8.5), and consider different increments of sea level rise coupled with extreme storm events. Users may select from four model simulations to view the range in potential inundation depth 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 50 meters (m) by 50 m, or about 164 feet (ft) by 164 ft.

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Wildfire data are for the grid cell in which your project are located. The projections are from UC Davis, as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider historical data of climate, vegetation, population density, and large (> 400 ha) fire history. Users may select from four model simulations to view the range in potential wildfire probabilities for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.

6.2. Initial Climate Risk Scores
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat N/A N/A N/A N/A
Extreme Precipitation N/A N/A N/A N/A
Sea Level Rise N/A N/A N/A N/A
Wildfire N/A N/A N/A N/A
Flooding N/A N/A N/A N/A
Drought N/A N/A N/A N/A
Snowpack Reduction N/A N/A N/A N/A
Air Quality Degradation 0 0 0 N/A
The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the 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 N/A N/A N/A N/A
Extreme Precipitation N/A N/A N/A N/A
Sea Level Rise N/A N/A N/A N/A
Wildfire N/A N/A N/A N/A
Flooding N/A N/A N/A N/A
Drought N/A N/A N/A N/A
Snowpack Reduction N/A N/A N/A N/A
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Air Quality Degradation 1 1 1 2
The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure.

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 6.38
AQ-PM 6.51
AQ-DPM 17.1
Drinking Water 18.4
Lead Risk Housing 51.0
Pesticides 59.7
Toxic Releases 2.25
Traffic 33.5
Effect Indicators —
CleanUp Sites 61.8
Groundwater 95.8
Haz Waste Facilities/Generators 85.4
Impaired Water Bodies 66.7
Solid Waste 89.8
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Sensitive Population —
Asthma 75.9
Cardio-vascular 83.9
Low Birth Weights 22.6
Socioeconomic Factor Indicators —
Education 70.2
Housing 47.1
Linguistic 59.8
Poverty 52.7
Unemployment 49.9

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 44.61696394
Employed 64.05748749
Median HI 56.24278198
Education —
Bachelor's or higher 31.64378288
High school enrollment 100
Preschool enrollment 20.18478121
Transportation —
Auto Access 65.16104196
Active commuting 56.0246375
Social —
2-parent households 22.53304247
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Voting 73.68150905
Neighborhood —
Alcohol availability 59.43795714
Park access 25.83087386
Retail density 18.69626588
Supermarket access 40.40805851
Tree canopy 36.75093032
Housing —
Homeownership 44.89926857
Housing habitability 50.0449121
Low-inc homeowner severe housing cost burden 37.88014885 Low-inc renter severe housing cost burden 69.16463493
Uncrowded housing 37.31553959
Health Outcomes —
Insured adults 45.18157321
Arthritis 84.5
Asthma ER Admissions 26.4
High Blood Pressure 94.2
Cancer (excluding skin) 74.5
Asthma 32.2
Coronary Heart Disease 85.5
Chronic Obstructive Pulmonary Disease 56.7
Diagnosed Diabetes 80.8
Life Expectancy at Birth 34.2
Cognitively Disabled 10.2
Physically Disabled 32.1
Heart Attack ER Admissions 33.4
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Mental Health Not Good 35.7
Chronic Kidney Disease 85.5
Obesity 54.6
Pedestrian Injuries 63.5
Physical Health Not Good 53.6
Stroke 84.7
Health Risk Behaviors —
Binge Drinking 17.1
Current Smoker 32.2
No Leisure Time for Physical Activity 56.5
Climate Change Exposures —
Wildfire Risk 0.0
SLR Inundation Area 0.0
Children 69.7
Elderly 76.6
English Speaking 63.9
Foreign-born 43.9
Outdoor Workers 19.6
Climate Change Adaptive Capacity —
Impervious Surface Cover 74.3
Traffic Density 32.5
Traffic Access 52.0
Other Indices —
Hardship 60.5
Other Decision Support —
2016 Voting 67.8
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7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a) 62.0 Healthy Places Index Score for Project Location (b) 51.0 Project Located in a Designated Disadvantaged Community (Senate Bill 535) No 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 Santa Rosa Default Power provider is Sonoma Clean Power.

Land Use Total lot acreage from project description. Total square footages from project plans and trip generation.

Construction: Construction Phases Defaults based on provided land uses from project applicant.

Construction: Off-Road Equipment Defaults.

Construction: Trips and VMT Building const = est 34 concrete truck round trips, Paving = est 45 asphalt truck round trips.

Operations: Vehicle Data Provided trip gen.

Operations: Hearths No hearths.

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Operations: Energy Use Santa Rosa REACH code - all electric new residential construction - convert natural gas to electricity.

Operations: Water and Waste Water Wastewater 100% aerobic, no septic tanks or lagoons.

Attachment 3: Project Construction and Operation Emissions and Health Risk Calculations

Construction Health Risk Information

Santa Rosa Gas Station - Santa Rosa, CA
DPM Construction Emissions and Modeling Emission Rates - Unmitigated Emissions
per
Construction DPM Source No. DPM Emissions Point Source
Year Activity (ton/year) Type Sources (lb/yr) (lb/hr) (g/s) (g/s) 2023 Construction 0.0413 Point 88 82.6 0.02514 3.17E-03 3.60E-05 2023 Construction 0.0184 Point 88 36.8 0.01120 1.41E-03 1.60E-05 Total 0.060 176 119.4 0.0363 0.0046
hr/day = 9 (7am - 4pm)
days/yr = 365
hours/year = 3285

PM2.5 Fugitive Dust Construction Emissions for Modeling - Unmitigated DPM
Modeled Emission
Construction Area PM2.5 Emissions Area Rate
Year Activity Source (ton/year) (lb/yr) (lb/hr) (g/s) (m2) g/s/m 2 2023 Construction 23_FUG 0.01044 20.9 0.00636 8.01E-04 4,341 1.84E-07 2023 Construction 24_FUG 0.000030 0.1 0.00002 2.30E-06 4,341 5.30E-10 Total 0.010 20.940 0.006 0.001
hr/day = 9 (7am - 4pm)
days/yr = 365
hours/year = 3285

Santa Rosa Gas Station - Santa Rosa, CA
Construction Health Impacts Summary
Maximum Impacts at Construction MEI Location - Uncontrolled Maximum Concentrations Maximum
Exhaust Fugitive Cancer Risk Hazard Annual PM2.5
Emissions PM10/DPM PM2.5 (per million) Index Concentration Year (μg/m3)( μg/m3) Child Adult (-) (μg/m3)
2023 0.0290 0.0375 5.15 0.08 0.006 0.07
2024 0.0073 0.0094 1.19 0.02 0.001 0.02
Total -- 6.3 0.1 --
Maximum 0.0290 0.0375 - - 0.006 0.07

Santa Rosa Gas Station - Santa Rosa, CA - Uncontrolled Emissions Maximum DPM Cancer Risk Calculations From Construction
Impacts at Off-Site Receptors-1.5 meter receptor height Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = C
air x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10 -6 = Conversion factor
Values
Infant/Child Adult
Age --> 3rd Trimester 0 - 2 2 - 9 2 - 16 16 - 30
Parameter
ASF = 10 10 3 3 1
CPF = 1.10E+00 1.10E+00 1.10E+00 1.10E+00 1.10E+00
DBR* = 361 1090 631 572 261
A = 1 1 1 1 1
EF = 350 350 350 350 350
AT = 70 70 70 70 70
FAH = 1.00 1.00 1.00 1.00 0.73
* 95th percentile breathing rates for infants and 80th percentile for children and adults Construction Cancer Risk by Year - Maximum Impact Receptor Location Infant/Child - Exposure Information Infant/Child Adult - Exposure Information Adult Exposure Age Cancer Modeled Age Cancer at MEI
Exposure Duration DPM Conc (ug/m3) Sensitivity Risk DPM Conc (ug/m3) Sensitivity Risk Fugitive Total Year (years) Age Year Annual Factor (per million) Year Annual Factor (per million) PM2.5 PM2.5 0 0.25 -0.25 - 0* 2023 0.0290 10 0.39 - - - -
1 1 0 - 1 2023 0.0290 10 4.76 2023 0.0290 1 0.08 0.0375 0.0664 2 1 1 - 2 2024 0.0073 10 1.19 2024 0.0073 1 0.02 0.0094 0.0167 3 1 2 - 3 0.0000 3 0.00 0.0000 1 0.00
4 1 3 - 4 0.0000 3 0.00 0.0000 1 0.00
5 1 4 - 5 0.0000 3 0.00 0.0000 1 0.00
6 1 5 - 6 0.0000 3 0.00 0.0000 1 0.00
7 1 6 - 7 0.0000 3 0.00 0.0000 1 0.00
8 1 7 - 8 0.0000 3 0.00 0.0000 1 0.00
9 1 8 - 9 0.0000 3 0.00 0.0000 1 0.00
10 1 9 - 10 0.0000 3 0.00 0.0000 1 0.00
11 1 10 - 11 0.0000 3 0.00 0.0000 1 0.00
12 1 11 - 12 0.0000 3 0.00 0.0000 1 0.00
13 1 12 - 13 0.0000 3 0.00 0.0000 1 0.00
14 1 13 - 14 0.0000 3 0.00 0.0000 1 0.00
15 1 14 - 15 0.0000 3 0.00 0.0000 1 0.00
16 1 15 - 16 0.0000 3 0.00 0.0000 1 0.00
17 1 16-17 0.0000 1 0.00 0.0000 1 0.00
18 1 17-18 0.0000 1 0.00 0.0000 1 0.00
19 1 18-19 0.0000 1 0.00 0.0000 1 0.00
20 1 19-20 0.0000 1 0.00 0.0000 1 0.00
21 1 20-21 0.0000 1 0.00 0.0000 1 0.00
22 1 21-22 0.0000 1 0.00 0.0000 1 0.00
23 1 22-23 0.0000 1 0.00 0.0000 1 0.00
24 1 23-24 0.0000 1 0.00 0.0000 1 0.00
25 1 24-25 0.0000 1 0.00 0.0000 1 0.00
26 1 25-26 0.0000 1 0.00 0.0000 1 0.00
27 1 26-27 0.0000 1 0.00 0.0000 1 0.00
28 1 27-28 0.0000 1 0.00 0.0000 1 0.00
29 1 28-29 0.0000 1 0.00 0.0000 1 0.00
30 1 29-30 0.0000 1 0.00 0.0000 1 0.00
Total Increased Cancer Risk 6.34 0.10
* Third trimester of pregnancy

Fuel Station Emission Calculations

Santa Rosa Gas Station - TOG and TAC Emissions From Gasoline Gas Station with EVR Phase I & EVR Phase II Controls
Proposed Annual Gasoline Throughput =
Operation Schedule
days per year = 365
hours per day = 24
TOG Emission Factors and Annual Emissions from Gasoline TOG1
TOG
Emission Annual
Factor Emissions
Emission Source (lb/103 gallon) (lb/year)
Fueling2
Non-ORVR Vehicles 0.42 16.6
ORVR Vehicles 0.021 8.4
Bulk Transfer Losses 0.15 65.7
Pressure Driven Losses 0.024 10.5
Fueling - Spillage 0.24 105.1
Gasoline Hose Losses 0.009 3.9
Total
2 0.480 210.2
TOG = total organic gas
ORVR = onboard refueling vapor recovery

1. Emission factors from CARB "Revised Emissions Factors for Gasoline Marketing Operations at California Gasoline Dispensing Facilities". December 23, 2013 (CARB, 2013). Assumes use of enhanced vapor recovery systems.

2. Fueling emissions and total TOG emission factor utilize on CARB data for 2025 of 91% of vehicles use ORVR (CARB, 2013).

Average Annual TAC Emissions
Pollutant
Average TAC Weight
% in Gasoline
Liquid1
AverageTAC
Weight % in
Gasoline
Vapor1
Refueling and
Hose Losses
(vapor)
(lb/year)
Spillage
Losses (liquid)
(lb/year)
Tank Transfer
Losses
(vapor)
(lb/year)
Tank
Pressure
Losses
(vapor)
(lb/year)
Total Annual
Average
Emissions
(lb/year)
TOG 28.9 105.1 65.7 10.5 210.2
Benzene 0.707 0.457 0.13 0.74 0.30 0.05 1.2
Ethyl Benzene 1.29 0.107 0.03 1.36 0.07 0.01 1.5
n-Hexane 1.86 1.82 0.53 1.96 1.20 0.19 3.9
Naphthalene 0.174 0.000445 0.00 0.18 0.00 0.00 0.2
Xylenes 5.63 1.11 0.32 5.92 0.73 0.12 7.1
Toluene 6.59 0.409 0.12 6.93 0.27 0.04 7.4

1. Weighted average Winter/Summer speciation weight percents for chronic health effects from CARB 2022 "Gasoline Service Station Industrywide Risk Assessment Technical Guidance"
Average Hourly TAC Emissions for Evaluating Chronic Health Effects TAC
Average TAC Weight
% in Gasoline
Liquid1
AverageTAC
Weight % in
Gasoline
Vapor1
Refueling and
Hose Losses
(vapor)
(lb/hr)
Spillage
Losses (liquid)
(lb/hr)
Tank Transfer
Losses
(vapor)
(lb/hr)
Tank
Pressure
Losses
(vapor)
(lb/hr)
Total Annual
Average
Emissions
(lb/hr)
Benzene 0.707 0.457 1.51E-05 8.48E-05 3.43E-05 5.48E-06 1.40E-04 Ethyl Benzene 1.29 0.107 3.53E-06 1.55E-04 8.03E-06 1.28E-06 1.68E-04 n-Hexane 1.86 1.82 6.00E-05 2.23E-04 1.37E-04 2.18E-05 4.42E-04 Naphthalene 0.174 0.000445 1.47E-08 2.09E-05 3.34E-08 5.34E-09 2.09E-05 Xylenes 5.63 1.11 3.66E-05 6.76E-04 8.33E-05 1.33E-05 8.09E-04 Toluene 6.59 0.409 1.35E-05 7.91E-04 3.07E-05 4.91E-06 8.40E-04

1. Weighted average Winter/Summer speciation weight percents for chronic health effects from CARB 2022 "Gasoline Service Staation Industrywide Risk Assessment Technical Guidance"
Maximum Hourly TAC Emissions for Evaluating Acute Health Effects TAC
Average TAC Weight
% in Gasoline
Liquid1
AverageTAC
Weight % in
Gasoline
Vapor1
Maximum
Hourly Tank
Loading
(gal/hr)2
Maximum
Hourly
Dispensing
Rate
(gal/hr)2
Refueling and
Hose Losses
(vapor)
(lb/hr)
Spillage
Losses
(liquid)
(lb/hr)
Tank Transfer
Losses
(vapor)
(lb/hr)
Tank Pressure
Losses
(vapor)
(lb/hr)
Benzene 0.702 0.549 8,800 500 1.81E-04 8.42E-04 7.25E-03 1.16E-03 Xylenes 5.80 1.35 8,800 500 4.45E-04 6.96E-03 1.78E-02 2.85E-03 Toluene 6.91 0.509 8,800 500 1.68E-04 8.29E-03 6.72E-03 1.08E-03

1. Summer-only speciation profiles used to calculate weight percents for acute health effects from CARB 2022 "Gasoline Service Station Industrywide Risk Assessment Technical Guidelines"

2. Maximum hourly tank loading and dispensing rates from CARB 2022 "Gasoline Service Station Industrywide Risk Assessment Technical Guidance" Gas Station Modeling - Volume Source Parameters
Number of Volume Source Dimensions Volume Source
Volume (meters) Release Height
Emission Source Sources Length Width Height (meters)
Refueling and Hose Losses 2 12.5 12.5 5.5 1.5
Spillage Losses 2 12.5 12.5 5.5 1
Gas Station Modelin
g - Point Source Parameters
Number of Height Diameter Temperature Velocity
Emission Source Sources (meters) (meters) (oK) (meters/sec) Tank Transfer Losses 2 3.66 0.0508 291 0.001
Tank Pressure Losses 2 3.66 0.0508 289 0.001
CARB 2022. "Gasoline Service Station Industrywide Risk Assessment Technical Guidelines", Feb 18, 2022. 438,000 gallons/year

Modeling Source Emission Rates
Gas Station Modeling - Volume Source Parameters
Number of Volume Source Dimensions Volume Source
Volume (meters) Release Height
Emission Source Sources Length Width Height (meters)
Refueling and Hose Losses 2 12.5 12.5 5.5 1.5
Emissions per Source Chronic Health Effects Acute Health Effacts TAC (lb/hr) (g/s) (lb/hr) (g/s)
Benzene 7.53E-06 9.49E-07 9.05E-05 1.14E-05
Ethyl Benzene 1.76E-06 2.22E-07 - -
n-Hexane 3.00E-05 3.78E-06 - -
Naphthalene 7.33E-09 9.24E-10 - -
Xylenes 1.83E-05 2.30E-06 2.22E-04 2.80E-05
Toluene 6.74E-06 8.49E-07 8.39E-05 1.06E-05
Gas Station Modeling - Volume Source Parameters
Number of Volume Source Dimensions Volume Source
Volume (meters) Release Height
Emission Source Sources Length Width Height (meters)
Spillage Losses 2 12.5 12.5 5.5 1
Emissions per Source Chronic Health Effects Acute Health Effacts TAC (lb/hr) (g/s) (lb/hr) (g/s)
Benzene 4.24E-05 5.34E-06 4.21E-04 5.31E-05
Ethyl Benzene 7.74E-05 9.75E-06 - -
n-Hexane 1.12E-04 1.41E-05 - -
Naphthalene 1.04E-05 1.32E-06 - -
Xylenes 3.38E-04 4.26E-05 3.48E-03 4.38E-04
Toluene 3.95E-04 4.98E-05 4.15E-03 5.22E-04
Gas Station Modeling - Point Source Parameters
Number of Height Diameter Temperature Velocity
Emission Source Sources (meters) (meters) (oK) (meters/sec) Tank Transfer Losses 2 3.66 0.0508 291 0.001
Emissions per Source Chronic Health Effects Acute Health Effacts TAC (lb/hr) (g/s) (lb/hr) (g/s)
Benzene 1.71E-05 2.16E-06 3.62E-03 4.57E-04
Ethyl Benzene 4.01E-06 5.06E-07 - -
n-Hexane 6.83E-05 8.60E-06 - -
Naphthalene 1.67E-08 2.10E-09 - -
Xylenes 4.16E-05 5.24E-06 8.91E-03 1.12E-03
Toluene 1.53E-05 1.93E-06 3.36E-03 4.23E-04
Number of Height Diameter Temperature Velocity
Emission Source Sources (meters) (meters) (oK) (meters/sec) Tank Pressure Losses 2 3.66 0.0508 289 0.001
Emissions per Source Chronic Health Effects Acute Health Effacts TAC (lb/hr) (g/s) (lb/hr) (g/s)
Benzene 2.74E-06 3.45E-07 5.80E-04 7.30E-05
Ethyl Benzene 6.42E-07 8.09E-08 - -
n-Hexane 1.09E-05 1.38E-06 - -
Naphthalene 2.67E-09 3.36E-10 - -
Xylenes 6.66E-06 8.39E-07 1.43E-03 1.80E-04
Toluene 2.45E-06 3.09E-07 5.38E-04 6.77E-05

Vehicle Emissions Calculations and Source Parameter Information for Modeling

CT-EMFAC2107 2025 Emission Factors
File Name: Sonoma (SF) - 2025 - Annual-BAAQMD_Trucks.EF CT-EMFAC2017 Version: 1.0.2.27401
Run Date: 2/2/2023 22:36
Area: Sonoma (SF)
Analysis Year: 2025
Season: Annual
======================================================================= Vehicle Category
VMT
Fraction
Diesel VMT
Fraction
Gas VMT
Fraction

Across
Category
Within
Category
Within
Category
Truck 1 0.02 0.581 0.419
Truck 2 0.023 0.946 0.039
Non-Truck 0.957 0.017 0.955
======================================================================= Road Type: Major/Collector
Silt Loading Factor: CARB 0.032 g/m2
Precipitation Correction: CARB P = 69 day
sN = 365 days
======================================================================= Fleet Average Running Exhaust Emission Factors (grams/veh-mile) Pollutant Name <= 5 mph 10 mph 15 mph 20 mph 25 mph 30 mph 35 mph 40 mph 45 mph PM2.5 0.009362 0.006139 0.004202 0.003028 0.002312 0.001874 0.001611 0.001469 0.001417 TOG 0.194841 0.128265 0.086463 0.061373 0.046651 0.037418 0.031495 0.027795 0.025707 Diesel PM 0.001544 0.001213 0.000928 0.000732 0.000616 0.000551 0.000524 0.000527 0.000558 ======================================================================= Fleet Average Running Loss Emission Factors (grams/veh-hour) Pollutant Name Emission Factor
TOG 1.559267
======================================================================= Fleet Average Tire Wear Factors (grams/veh-mile)
Pollutant Name Emission Factor
PM2.5 0.002093
======================================================================= Fleet Average Brake Wear Factors (grams/veh-mile)
Pollutant Name Emission Factor
PM2.5 0.017404
======================================================================= Fleet Average Road Dust Factors (grams/veh-mile)
Pollutant Name Emission Factor
PM2.5 0.014996
=============================END=======================================

EMFAC2021 Emission Factors for HHDT Trucks

Source: EMFAC2021 (v1.0.2) Emission Rates
Region Type: County
Region: Sonoma
Calendar Year: 2025
Season: Annual
Vehicle Classification: EMFAC2007 Categories
Units: g/mile for RUNEX, PMBW and PMTW, mph for Speed
Region
Calendar
Year
Vehicle
Category Model Year Speed Fuel PM2.5_RUNEX PM10_RUNEX PM10_PMBW PM2.5_PMBW Sonoma 2025 HHDT Aggregate 5 Diesel 0.122610267 0.12815416 0.157640645 0.055174226 Sonoma 2025 HHDT Aggregate 30 Diesel 0.012153024 0.01270253 0.137850008 0.048247503

Fuel Truck and Customer Vehicles Emission Calculations

Santa Rosa Fuel Station - San Rosa
2025 Project Fuel Delivery Truck Travel and Idle DPM & PM2.5 Emissions Truck Travel Emissions
Percent DPM Total PM2.5* Truck Travel DPM & Total PM2.5 Emissions Release of Annual No. Travel Emission Emission DPM Total PM2.5 DPM Total PM2.5 DPM Total PM2.5 Road Segment Truck Trip Length No. of Modeled Road Width Height Del iveries of Annual Speed Factor Factor Daily Daily Hourly Hourly Annual Annu al Segment ID (ft) (mi) Lanes (ft) (m) (m) (%) Trips (mph) (g/mi) (g/m i) (lb/day) (lb/day) (lb/hr) (lb/hr) (lb/year) (lb/year) On-Site Fuel Trucks
On-Site Fuel Truck OST 434 0.08 1 12.0 3.7 3.4 100% 67 5 0.12815 0.17778 4.25E-06 5.90E-06 1.77E-07 2.46E-07 1.55E-03 2.15E-03 Off-Site Fuel Trucks
Wright Rd to SR-12 SEG1 504 0.10 4 67.7 20.6 3.4 100% 134 30 0.01270 0.08385 9.79E-07 6.46E-06 4.08E-08 2.69E-07 3.57E-04 2.36E-03 a Source Parameters from EPA Transportation Conformity Guidance for Hot-Spot Analyses in PM2.5 and PM10 Nonattainment and Maintenace Areas (2015) * Total PM2.5 is the sum of the exhaust emissions, tire and brake wear emissions, and fugitive road dust On-Site Diesel Truck Idle Emissions
No. of Idle Idle Total Idle Emissions
Stacka Stacka Stacka Stacka No. Modeled Emissions Emissions Height Diameter Velocity Temp of Annual Emission Factor per Delivery Daily Hourly Annual Location (m) (m) (m/s) (oK) Deliveries Points (g/hr) (g/vehicle) (lb/day) (lb/hr) (lb/year) Tank Loading Area 3.84 0.1 51.71 366 67 1 0.641 0.10680 4.31E-05 1.80E-06 0.0157 a Point source parameters from SJVAPCD Guidance for Air Dispersion Modeling .

Trip Information and DPM/PM2.5 Emission Factors
Daily Truck Deliveries = 67 Annual Gas Gallons = 438,000 Operation Days/year = 365 Annual Diesel Gallons = 150,000 Delivery Truck Hours (hrs/day) = 24 Total Annual Fuel (gal) = 588,000 Truck Speed (mph) - On-site= 5 Annual Fuel Deliveries* = 67 Truck Speed (mph) - Off-site= 30 * Assumes 8,800 gal fuel truck DPM Emission Factor for HHDT @ 5 mph (g/mi) = 0.12815
DPM Emission Factor for HHDT @ 30 mph (g/mi) = 0.01270
PM2.5 Emission Factor for HHDT @ 5 mph (g/mi) = 0.12261 PM2.5 Emission Factor for HHDT @ 30 mph (g/mi) = 0.01215 PM2.5 Emission Factor for Fugitive Road Dust = 0.01500
T
rucks assumed to be heavy duty diesel (HHDT)
Truck exhaust, tire & brake wear emissions based on EMFAC2021 for 2025 with default HHDT fleet mix for BAAQMD.

Truck fugitive road dust from CTEMFAC-2017 for Sonoma County in 2025 Truck emissions (lb/hr) = EF (g/mi) * Road Length (mi) * No. Trips / Hours per day * conversion factors Idle DPM Emission Information (2025)
DPM Emission Factor for HHDT @ 5 mph (g/mi) = 0.12815
HHDT Idle DPM Emission Rate (g/hr) = 0.641
Idle Time per Delivery (min) 10
Idle emission factor (g/hr) = EF @5 mph (g/mi) * 5 mph

Santa Rosa Fuel Station - Santa Rosa - Operational Emissions - Project Vehicle Travel Diesel Vehicles
Percent No. DPM3 Annual Average Hourly 4
Release1 Project of Annual Travel2 Emission DPM DPM
Segment Travel Distance No. of Modeled Road Width Height Vehicles Daily Project Speed Factor Emissions Emissoins Route ID (feet) (mi) Lanes (ft) (m) (m) (%) Trips Vehicles (mph) (g/VMT) (lb/year) (lb/hr) On-Site Vehicles 2,993
Gas Station - On-Site OSC 407 0.08 1 24.0 7.3 1.3 100% 1,497 546,223 5 0.00154 0.14 1.64E-05 Off-Site Vehicles 1,506
Wright Rd to/from South SEG2 1,156 0.22 4 67.7 20.6 1.3 5% 75 27,485 30 0.00055 0.01 8.34E-07 Sebastopol Rd to/from east SEG3 1,862 0.35 4 67.7 20.6 1.3 15% 226 82,454 30 0.00055 0.04 4.03E-06 Fulton Rd to/from north SEG4 1,156 0.22 4 67.7 20.6 1.3 80% 1,205 439,752 40 0.00053 0.11 1.28E-05 1 Source Parameters from EPA Transportation Conformity Guidance for Hot-Spot Analyses in PM2.5 and PM10 Nonattainment and Maintenace Areas (2015) 2 Average travel speeds for on-site and off-site travel 3 2025 emission factors developed from CTEMFAC-2017 for Sonoma County 4 Station operation assumed operate 24 hours per day, 365 days per year Total Daily Cust Trips = 2,993
Bypass Trips = 1,497
Project Residence Trips = 10
On-Site Project Trips = 2,993
Off-Site Project Tripsa = 1,506
Days Annual Operation = 365
Daily Operation Hours (hrs/day) = 24
On-Site Annual Project Trips = 1,092,445
Off-Site Annual Project Trips
a = 549,690
a Off-site project trips do not include bypass trips

Santa Rosa Fuel Station - Santa Rosa - Operational Emissions - Customer Vehicle Travel Off-site Travel and at Station
Percent Emissions Factors3 Annual Emissions (lb/year) Average Hourly Emissions (lb/hr) 5 Release Customer Annual Travel2 Total4 TOG TOG TOG TOG Segment Travel Distance No. of Modeled Road Width Height Vehicles Daily Number Speed PM2.5 Exhaust Run Loss Total4 TOG Running Total4
TOG Running Total
Route ID (feet) (miles) Lanes (ft) (m) (m) (%) Trips Vehicles (mph) (g/VMT) (g/VMT) (g/VMT) PM2.5 Exhaust Loss PM2.5 Exhaust Loss TOG On-Site Vehicles 2,993
Gas Station - On-Site OSC 407 0.08 1 24.0 7.3 1.3 100% 1,497 546,223 5 0.0289 0.1948 0.3119 2.68 18.1 29.0 3.06E-04 2.07E-03 3.31E-03 5.37E-03 Off-Site Vehicles 1,506
Wright Rd to/from South SEG2 1,156 0.22 4 67.7 20.6 1.3 5% 75 27,485 30 0.0214 0.0374 0.0520 0.28 0.5 0.7 3.24E-05 5.67E-05 7.87E-05 1.35E-04 Sebastopol Rd to/from east SEG3 1,862 0.35 4 67.7 20.6 1.3 15% 226 82,454 30 0.0214 0.0374 0.0520 1.37 2.4 3.3 1.56E-04 2.74E-04 3.80E-04 6.54E-04 Fulton Rd to/from north SEG4 1,156 0.22 4 67.7 20.6 1.3 80% 1,205 439,752 40 0.0210 0.0278 0.0390 4.45 5.9 8.3 5.08E-04 6.73E-04 9.45E-04 1.62E-03 1 Source Parameters from EPA Transportation Conformity Guidance for Hot-Spot Analyses in PM2.5 and PM10 Nonattainment and Maintenace Areas (2015) 2 Average travel speed for on-site and off-site travel
3 2025 emission factors developed from CTEMFAC-2017 for Sonoma County 4 Includes tire & brake wear, and fugitive road dust from vehicles 5 Station operation assumed operate 24 hours per day, 365 days per year Total Daily Cust Trips = 2,993
Bypass Trips = 1,497
Project Residence Trips = 10
On-Site Project Trips = 2,993
Off-Site Project Trips
a = 1,506
Days Annual Operation = 365
Daily Operation Hours (hrs/day) = 24
On-Site Annual Project Trips = 1,092,445
Off-Site Annual Project Trips
a = 549,690
a Off-site project trips do not include bypass trips

Santa Rosa Fuel Station - Santa Rosa
2025 Customer Vehicle Idle Emissions
On-Site Vehicle Idle Emissions - DPM
Idle Idle Total Idle Emissions Total
No. Operation1 Emission Emissions Emissions
of Annual Schedule Factor per Vehicle Daily Hourly Annual per Area Vehicle Type Vehicles (hrs/day) (g/hr) (g/vehicle/day) (lb/day) (lb/hr) (lb/year) (g/s-m2) Customer 546,223 24 0.0077 0.0004 1.27E-03 5.31E-05 0.4648 1.44E-08 1 Station operation assumed operate 24 hours per day, 365 days per year On-Site Vehicle Idle Emissions - PM2.5
Idle Idle Total Idle Emissions Total
No. Operation1 Emission Emissions Emissions
of Annual Schedule Factor per Vehicle Daily Hourly Annual per Area Vehicle Type Vehicles (hrs/day) (g/hr) (g/vehicle) (lb/day) (lb/hr) (lb/year) (g/s-m2) Customer 546,223 24 0.0468 0.0023 7.72E-03 3.22E-04 2.8185 8.73E-08 1 Station operation assumed operate 24 hours per day, 365 days per year On-Site Vehicle Idle Emissions - TOG Exhaust
Idle Idle Total Idle Emissions Total
No. Operation1 Emission Emissions Emissions
of Annual Schedule Factor per Vehicle Daily Hourly Annual per Area Vehicle Type Vehicles (hrs/day) (g/hr) (g/vehicle) (lb/day) (lb/hr) (lb/year) (g/s-m2) Customer 546,223 24 0.9742 0.0487 1.61E-01 6.70E-03 58.6579 1.82E-06 1 Station operation assumed operate 24 hours per day, 365 days per year On-Site Vehicle Idle Emissions - TOG Running (Evaporative) Idle Idle Total Idle Emissions Total
No. Operation1 Emission Emissions Emissions
of Annual Schedule Factor per Vehicle Daily Hourly Annual per Area Vehicle Type Vehicles (hrs/day) (g/hr) (g/vehicle) (lb/day) (lb/hr) (lb/year) (g/s-m2) Customer 546,223 24 1.5593 0.0780 2.57E-01 1.07E-02 93.8851 2.91E-06 1 Station operation assumed operate 24 hours per day, 365 days per year Idle Emisison Modeling - Source Parameters
Area
Number of Area Source Dimensions Source
Area (meters) Area Height
Sources Length Width (sq meters) (meters)
1 28.7 16.2 464.5 1.0
Idle - Gasoline Emission Information (2025)* DPM PM2.5 TOG Exhaust TOG Evaporative1 Customer Vehicle Emission Factor @ 5 mph (g/mi) = 0.00154 0.00936 0.19484 - Customer Vehicle Idle Emission Rate (g/hr) = 0.0077 0.0468 0.9742 1.5593 Idle Time per Vehicle (min) 3 3 3 3
* Emission factors from CT-EMFAC-2017
1 Emission factor in terms of g/veh-hour
Total Daily Cust Trips = 2,993
Bypass Trips = 1,497
Project Residence Trips = 10
On-Site Project Trips = 2,993
Off-Site Project Trips
a = 1,506
Days Annual Operation = 365
Daily Operation Hours (hrs/day) = 24
On-Site Annual Project Trips = 1,092,445
Off-Site Annual Project Trips
a = 549,690
a Off-site project trips do not include bypass trips

Health Risk Calculations

Santa Rosa Gas Station - Health Risk Summaries for Maximum Off-Site and On-Site Receptors Maximum Off-Site Health Risks Summary
Cancer PM2.5
Risk Concentration Maximum HI
Scenario (per million) (ug/m3) Acute Chronic
Construction Only (2023-2024) 6.34 0.066 - <0.01
Operation (2025-2022)
GDF 0.08 - 0.326 <0.01
Project Vehicles 0.79 0.016 0.017 <0.01
GDF + Project Vehicles 0.87 0.016 0.34 <0.01
Construction & Operation1

7.21 0.066 0.34 <0.01
Operation Only 2025-2054)
GDF 0.155 - 0.340 <0.01
Project Vehicles 1.459 0.016 <0.01 <0.01
Total Operation Only2

1.61 0.016 0.34 <0.01
1 Sum of all values for cancer risk. For PM2.5, chronic and accute non-cancer health effects it is the maximum of the sum of all values for any given year.
2 Sum of all values for cancer risk, chronic and acute non-cancer health effects.

On-Site Health Risks Summary
Cancer PM2.5
Risk Concentration Maximum HI
Scenario (per million) (ug/m3) Acute Chronic
Operation (2025-2054)
GDF 0.403 - 0.239 <0.01
Project Vehicles 2.950 0.024 0.016 <0.01
Total Operation1

3.35 0.024 0.255 <0.01
1 Sum of all values for cancer risk, chronic and acute non-cancer health effects.

Santa Rosa Gas Station - Project Construction & Operation AERMOD Risk Modeling Parameters, Maximum TAC Concentrations & Non-Cancer Health Effects Off-Site Residential Receptors - 1.5 meter Receptor Heights Receptor Information
Number of Receptors 45
Receptor Height = 1.5 meters
Receptor distances = variable - at nearby residences
Meteorological Conditions
Sonoma County Airport Met Data2013-2017
Land Use Classification rural
Wind speed = variable
Wind direction = variable
Maximum Residential MEI Concentrations
TAC Concentration (µg/m3)
2023 2024 2025
TAC
Max Period
Average
Max Period
Average
Max Period
Average
DPM 0.02896 0.00726 0.00114
Benzene 0.00000 0.00000 0.00178
Ethylbenzene 0.00000 0.00000 0.00216
n-Hexane 0.00000 0.00000 0.00563
Naphthalene 0.00000 0.00000 0.00027
Xylene 0.00000 0.00000 0.01041
Toluene 0.00000 0.00000 0.01084
TOG Exhaust 0.00000 0.00000 0.13137
TOG Evaporative 0.00000 0.00000 0.20759
PM2.5 0.066 0.017 0.016
2023 - Maximum Non-Cancer Health Effects 2024 - Non-Cancer Health Effects 2025 - Non-Cancer Health Effects Maximum Concentration Maximum Concentration Maximum Concentration 1-Hour Period Ave Hazard Index 1-Hour Period Ave Hazard Index 1-Hour Period Ave Hazard Index TAC (µg/m3)( µ g / m 3) Acute Chronic TAC (µg/m3)( µ g / m 3) Acute Chronic TAC (µg/m3)( µ g / m 3) Acute Chronic DPM - 0.02896 - 5.79E-03 DPM - 0.00726 - 1.45E-03 DPM - 0.00114 - 2.28E-04 Benzene - 0.00000 - - Benzene - 0.000000 - - Benzene 8.73398 0.00178 3.23E-01 5.93E-04 Ethylbenzene - 0.00000 - - Ethylbenzene - 0.000000 - - Ethylbenzene - 0.00216 - 1.08E-06 n-Hexane - 0.00000 - - n-Hexane - 0.000000 - - n-Hexane - 0.00563 - 8.04E-07 Naphthalene 0.00000 - - Naphthalene 0.000000 - - Naphthalene - 0.00027 - 3.00E-05 Xylene - 0.00000 - - Xylene - 0.000000 - - Xylene 22.30356 0.01041 1.01E-03 1.49E-05 Toluene - 0.00000 - - Toluene - 0.000000 - - Toluene 9.99192 0.01084 2.00E-03 2.58E-05 TOG Exhaust - 0.00000 - - TOG Exhaust - 0.000000 - - TOG Exhaust 7.0089 0.13137 2.13E-03 4.63E-04 TOG Evaporative - 0.00000 TOG Evaporative - 0.00000 TOG Evaporative 11.18181 0.20759 1.47E-02 1.73E-03 Total 0.000 0.006 Total 0.000 0.001 Tota l 0.343 0.003
* Maximum for residential receptors * Maximum for re sidential receptors * Maximum for residential receptors GDF 0.326 0.001
Proj Vehicles 0.017 0.002

0.343

Santa Rosa Gas Station - Project Construction & Operation Maximum Residential Cancer Risk from Project Construction & Operation at Off-Site Residential MEI Location
30-Year Residential Exposure
Cancer Risk Calculation Method
Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = C
air x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Infant/Child Adult
Age --> 3rd Trimester 0 to 2 2 to 16 17 - 70
Parameter
ASF 10 10 3 1
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
ED = 0.25 2 14 14
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
* 95th percentile breathing rates for infants and 80th percentile for children and adults Cancer Potency Factors and Reference Exposure Levels (REL) REL (μg/m3)
CPF Acute Chronic
TAC (mg/kg-day)-1 (1-hour) (ann ave)
DPM 1.10E+00 - 5
Benzene 1.00E-01 27 3
Ethylbenzene 8.70E-03 - 2,000
n-Hexane - 7,000
Naphthalene 1.20E-01 - 9
Xylene 22,000 700
Toluene 5,000 420
TOG Exhaust 6.28E-03 3,283 284
TOG Evaporative 3.70E-04 762 120
Project Construction & Operation Cancer Risk - at Residential MEI Receptor Maximum - Exposure Information
Exposure Initial Exposure Age Annual Conc (ug/m3) Cancer Risk (per million) Year Exposure Duration Sensitivity Ethyl- Naph- TOG TOG Ethyl- Naph- TOG TOG Age Year (years) Factor DPM Benzene benzene n-Hexane thalene Xylene Toluene Exhaust Evaporative DPM Benzene benzene n-Hexane thalene Xylene Toluen e Exhaust Evaporative Total 0 2023 0.25 10 0.02896 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.3938 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.000 00 . 3 9 0 - 1 2023 1 10 0.02896 0.00000 0.00000 0.000000 0.00000 0.00000 0.000000 0.00000 0.00000 4.7566 0.0000 0.00000 0.0000 0.0000 0.0000 0.0000 0.0000 0 .0000 4.76 1 < 2 2024 1 10 0.00726 0.00000 0.00000 0.000000 0.00000 0.00000 0.000000 0.00000 0.00000 1.1924 0.0000 0.00000 0.0000 0.0000 0.0000 0.0000 0.0000 0 .0000 1.19 2 < 16 2025 14 3 0.00114 0.00178 0.00216 0.005630 0.00027 0.01041 0.010840 0.13137 0.20759 0.4127 0.0586 0.00618 0.0000 0.0107 0.0000 0.0000 0.2716 0.0253 0.78 16 - 70 2025 14 1 0.00114 0.00178 0.00216 0.005630 0.00027 0.01041 0.010840 0.13137 0.20759 0.0458 0.0065 0.00069 0.0000 0.0012 0.0000 0.0000 0.030 20 . 0 0 2 8 0 . 0 9 Total Increased Cancer Risk 6.8014 0.0651 0.0069 0.0000 0.0118 0.0000 0.0000 0.3017 0.0281 7.2150 * Third trimester of pregnancy

Santa Rosa Gas Station - Project Operation
AERMOD Risk Modeling Parameters, Maximum TAC Concentrations & Non-Cancer Health Effects Off-Site Residential Receptors - 1.5 meter Receptor Heights Receptor Information
Number of Receptors 45
Receptor Height = 1.5 meters
Receptor distances = variable - at nearby residences
Meteorological Conditions
Sonoma County Airport Met Dat2013-2017
Land Use Classification rural
Wind speed = variable
Wind direction = variable
Residential MEI Concentrations
TAC Concentration (µg/m3)
2023 2024 2025
TAC
Max Period
Average
Max Period
Average
Max Period
Average
DPM 0.00000 0.00000 0.00114
Benzene 0.00000 0.00000 0.00178
Ethylbenzene 0.00000 0.00000 0.00216
n-Hexane 0.00000 0.00000 0.00563
Naphthalene 0.00000 0.00000 0.00027
Xylene 0.00000 0.00000 0.01041
Toluene 0.00000 0.00000 0.01084
TOG Exhaust 0.00000 0.00000 0.13137
TOG Evaporative 0.00000 0.00000 0.20759
PM2.5 0.000 0.000 0.01596
2023 - Maximum Non-Cancer Health Effects 2024 - Non-Cancer Health Effects 2025 - Non-Cancer Health Effects Maximum Concentration Maximum Concentration Maximum Concentration 1-Hour Period Ave Hazard Index 1-Hour Period Av e Hazard Index 1-Hour Per iod Ave Hazard Index TAC (µg/m3)( µ g / m 3) Acute Chronic TAC (µg/m3)( µ g / m 3) Acute Chronic TAC (µg/m3)( µ g / m 3) Acute Chronic DPM - 0.00000 - 0.00E+00 DPM - - 0.00E+00 DPM - 0.00114 - 2.28E-04 Benzene - 0.00000 - - Benzene - - - - Benzene 8.73398 0.00178 3.23E-01 5.93E-04 Ethylbenzene - 0.00000 - - Ethylbenzene - - - - Ethylbenzene - 0.00216 - 1.08E-06 n-Hexane - 0.00000 - - n-Hexane - - - - n-Hexane - 0.00563 - 8.04E-07 Naphthalene 0.00000 - - Naphthalene - - Naphthalene - 0.00027 - 3.00E-05 Xylene - 0.00000 - - Xylene - - - - Xylene 22.30356 0.01041 1.01E-03 1.49E-05 Toluene - 0.00000 - - Toluene - - - - Toluene 9.99192 0.01084 2.00E-03 2.58E-05 TOG Exhaust - 0.00000 - - TOG Exhaust - - - - TOG Exhaust 7.0089 0.13137 2.13E-03 4.63E-04 TOG Evaporative - 0.00000 TOG Evaporative - TOG Evaporative 11.18181 0.20759 1.47E-02 1.73E-03 Total 0.000 0.000 Total 0.000 0.000 Total 0.343 0.003
* Maximum for residential receptors * Maximum for residential receptors * Maximum for residential receptors GDF 0.326 0.001
Proj Vehicles 0.017 0.002

Santa Rosa Gas Station - Project Operation
Maximum Residential Cancer Risk from Project Operation
at Off-Site Residential MEI Location
30-Year Residential Exposure
Cancer Risk Calculation Method
Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = C
air x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Infant/Child Adult
Age --> 3rd Trimester 0 to 2 2 to 16 17 - 70
Parameter
ASF 10 10 3 1
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
ED = 0.25 2 14 14
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
* 95th percentile breathing rates for infants and 80th percentile for children and adults Cancer Potency Factors and Reference Exposure Levels (REL) REL (μg/m3)
CPF Acute Chronic
TAC (mg/kg-day)-1
(1-hour) (ann ave)
DPM 1.10E+00 - 5
Benzene 1.00E-01 27 3
Ethylbenzene 8.70E-03 - 2,000
n-Hexane - 7,000
Naphthalene 1.20E-01 - 9
Xylene 22,000 700
Toluene 5,000 420
TOG Exhaust 6.28E-03 3,283 284
TOG Evaporative 3.70E-04 762 120
Project Operation Cancer Risk - at Residential MEI Receptor Maximum - Exposure Information
Exposure Initial Exposure Age Annual Conc (ug/m3) Cancer Risk (per million) Year Exposure Duration Sensitivity Ethyl- Naph- TOG TOG Ethyl- Naph- TOG TOG Age Year (years) Factor DPM Benzene benzene n-Hexane thalene Xylene Toluene Exhaust Evaporative DPM Benzene benzene n-Hexane thalene Xylene Toluen e Exhaust Evaporative Total 0 2025 0.25 10 0.00114 0.00178 0.00216 0.00563 0.00027 0.01041 0.01084 0.13137 0.20759 0.0155 0.0022 0.0002 0.0000 0.0004 0.0000 0.0000 0.0102 0.001 00 . 0 3 0 - 1 2025 1 10 0.00114 0.00178 0.00216 0.005630 0.00027 0.01041 0.010840 0.13137 0.20759 0.1872 0.0266 0.00281 0.0000 0.0048 0.0000 0.0000 0.1232 0 .0115 0.36 1 < 2 2025 1 10 0.00114 0.00178 0.00216 0.005630 0.00027 0.01041 0.010840 0.13137 0.20759 0.1872 0.0266 0.00281 0.0000 0.0048 0.0000 0.0000 0.1232 0 .0115 0.36 2 < 16 2025 14 3 0.00114 0.00178 0.00216 0.005630 0.00027 0.01041 0.010840 0.13137 0.20759 0.4127 0.0586 0.00618 0.0000 0.0107 0.0000 0.0000 0.2716 0.0253 0.78 16 - 70 2025 14 1 0.00114 0.00178 0.00216 0.005630 0.00027 0.01041 0.010840 0.13137 0.20759 0.0458 0.0065 0.00069 0.0000 0.0012 0.0000 0.0000 0.030 20 . 0 0 2 8 0 . 0 9 Total Increased Cancer Risk 0.85 0.12 0.01 0.00 0.02 0.00 0.00 0.56 0.05 1.614 * Third trimester of pregnancy

Santa Rosa Gas Station - Project Construction & Operation AERMOD Risk Modeling Parameters, Maximum TAC Concentrations & Non-Cancer Health Effects On-Site Residential Receptor - 5.8 meter Receptor Height Receptor Information
Number of Receptors 1
Receptor Height = 5.8 meters
Receptor distances = at project residence
Meteorological Conditions
Sonoma County Airport Met Da2013-2017
Land Use Classification rural
Wind speed = variable
Wind direction = variable
Residential MEI Concentrations
TAC Concentration (µg/m3)
2023 2024 2025
TAC
Max Period
Average
Max Period
Average
Max Period
Average
DPM 0.00000 0.00000 0.00227
Benzene 0.00000 0.00000 0.00472
Ethylbenzene 0.00000 0.00000 0.00530
n-Hexane 0.00000 0.00000 0.01525
Naphthalene 0.00000 0.00000 0.00065
Xylene 0.00000 0.00000 0.02606
Toluene 0.00000 0.00000 0.02642
TOG Exhaust 0.00000 0.00000 0.27116
TOG Evaporative 0.00000 0.00000 0.43191
PM2.5 0.000 0.000 0.02391
2023 - Maximum Non-Cancer Health Effects 2024 - Non-Ca ncer Health Effects 2025 - Non-Cancer Health Effects Maximum Concentration Maximum Concentration Maximum Concentration 1-Hour Period Ave Hazard Index 1-Hour Period Ave Hazard Index 1-Hour Period Ave Hazard Index TAC (µg/m3)( µ g / m 3) Acute Chronic TAC (µg/m3)( µ g / m 3) Acute Chronic TAC (µg/m3)( µ g / m 3) Acute Chronic DPM - 0.00000 - 0.00E+00 DPM - 0.02666 - 5.33E-03 DPM - 0.00227 - 4.54E-04 Benzene - 0.00000 - - Benzene - - - - Benzene 6.37396 0.00472 2.36E-01 1.57E-03 Ethylbenzene - 0.00000 - - Ethylbenzene - - - - Ethylbenzene - 0.00530 - 2.65E-06 n-Hexane - 0.00000 - - n-Hexane - - - - n-Hexane - 0.01525 - 2.18E-06 Naphthalene 0.00000 - - Naphthalene - - Naphthalene - 0.00065 - 7.22E-05 Xylene - 0.00000 - - Xylene - - - - Xylene 16.8839 0.02606 7.67E-04 3.72E-05 Toluene - 0.00000 - - Toluene - - - - Toluene 8.55855 0.02642 1.71E-03 6.29E-05 TOG Exhaust - 0.00000 - - TOG Exhaust - - - - TOG Exhaust 1.3736 0.27116 4.18E-04 9.55E-04 TOG Evaporative - 0.00000 TOG Evaporative - TOG Evaporative 11.93507 0.43191 1.57E-02 3.60E-03 Total 0.000 0.000 Total 0.000 0.005 Tota l 0.255 0.007
* Maximum for residential receptors * Maximum for residential receptors * Maximum for residential receptors GDF 0.239 0.002
Proj Vehicles 0.016 0.005

Santa Rosa Gas Station - Project Operation
Maximum Residential Cancer Risk from Project Operation
at On-Site Residential Location
30-Year Residential Exposure
Cancer Risk Calculation Method
Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = C
air x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Infant/Child Adult
Age --> 3rd Trimester 0 to 2 2 to 16 17 - 70
Parameter
ASF 10 10 3 1
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
ED = 0.25 2 14 14
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
* 95th percentile breathing rates for infants and 80th percentile for children and adults Cancer Potency Factors and Reference Exposure Levels (REL) REL (μg/m3)
CPF Acute Chronic
TAC (mg/kg-day)-1 (1-hour) (ann ave)
DPM 1.10E+00 - 5
Benzene 1.00E-01 27 3
Ethylbenzene 8.70E-03 - 2,000
n-Hexane - 7,000
Naphthalene 1.20E-01 - 9
Xylene 22,000 700
Toluene 5,000 420
TOG Exhaust 6.28E-03 3,283 284
TOG Evaporative 3.70E-04 762 120
Project Operation Cancer Risk - at Residential MEI Receptor Maximum - Exposure Information
Exposure Initial Exposure Age Annual Conc (ug/m3) Cancer Risk (per million) Year Exposure Duration Sensitivity Ethyl- Naph- TOG TOG Ethyl- Naph- TOG TOG Age Year (years) Factor DPM Benzene benzene n-Hexane thalene Xylene Toluene Exhaust Evaporative DPM Benzene benzene n-Hexane thalene Xylene Toluen e Exhaust Evaporative Total 0 2025 0.25 10 0.00227 0.00472 0.00530 0.01525 0.00065 0.02606 0.02642 0.27116 0.43191 0.0309 0.0058 0.0006 0.0000 0.0010 0.0000 0.0000 0.0211 0.002 00 . 0 6 0 - 1 2025 1 10 0.00227 0.00472 0.00530 0.015250 0.00065 0.02606 0.026420 0.27116 0.43191 0.3728 0.0705 0.00688 0.0000 0.0116 0.0000 0.0000 0.2543 0 .0239 0.74 1 < 2 2025 1 10 0.00227 0.00472 0.00530 0.015250 0.00065 0.02606 0.026420 0.27116 0.43191 0.3728 0.0705 0.00688 0.0000 0.0116 0.0000 0.0000 0.2543 0 .0239 0.74 2 < 16 2025 14 3 0.00227 0.00472 0.00530 0.015250 0.00065 0.02606 0.026420 0.27116 0.43191 0.8218 0.1553 0.01517 0.0000 0.0257 0.0000 0.0000 0.5605 0.0527 1.63 16 - 70 2025 14 1 0.00227 0.00472 0.00530 0.015250 0.00065 0.02606 0.026420 0.27116 0.43191 0.0912 0.0172 0.00168 0.0000 0.0029 0.0000 0.0000 0.062 20 . 0 0 5 8 0 . 1 8 Total Increased Cancer Risk 1.69 0.32 0.03 0.00 0.05 0.00 0.00 1.15 0.11 3.354 * Third trimester of pregnancy

Attachment 4: Cumulative Health Risk Modeling Information and Calculations

Cumulative Roadway Emissions

Santa Rosa GDF
Wright Road ‐ South
DPM Modeling ‐ Roadway Links, Traffic Volumes, and DPM Emissions Year = 2025
Road Link Description Direction No. Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
DPM_SEG2 Wright Rd ‐ South N ‐S 4 352 0.22 20.6 67.7 3.4 30 32,460 Emission Factors ‐ DPM
Speed Category 12 3 4
Travel Speed (mph) 30
Emissions per Vehicle (g/VMT) 0.00055
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and DPM Emissions ‐ DPM_SEG2 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 4.28% 1390 4.66E ‐05 9 6.60% 2142 7.18E ‐05 17 5.61% 1822 6.10E ‐05 2 3.46% 1123 3.76E ‐05 10 8.08% 2624 8.79E ‐05 18 3.80% 1233 4.13E ‐05 3 3.62% 1176 3.94E ‐05 11 6.44% 2089 7.00E ‐05 19 2.48% 805 2.70E ‐05 4 1.98% 642 2.15E ‐05 12 7.42% 2410 8.07E ‐05 20 1.00% 324 1.09E ‐05 5 1.65% 535 1.79E ‐05 13 6.27% 2035 6.82E ‐05 21 3.14% 1019 3.42E ‐05 6 2.31% 749 2.51E ‐05 14 6.11% 1982 6.64E ‐05 22 4.29% 1394 4.67E ‐05 7 4.79% 1554 5.21E ‐05 15 5.12% 1661 5.57E ‐05 23 3.13% 1016 3.40E ‐05 8 3.63% 1180 3.95E ‐05 16 4.13% 1340 4.49E ‐05 24 0.66% 214 7.17E ‐06 Total 32,460

Santa Rosa GDF
Wright Road ‐ South
PM2.5 Modeling ‐ Roadway Links, Traffic Volumes, and PM2.5 Emissions Year = 2025
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
PM25_SEG2 Wright Rd ‐ South N ‐S 4 352 0.22 20.6 68 1.3 30 32,460 Emission Factors ‐ PM2.5
Speed Category 12 3 4
Travel Speed (mph) 30
Emissions per Vehicle (g/VMT) 0.001874
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and PM2.5 Emissions ‐ PM25_SEG2 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 381 4.34E ‐05 9 7.18% 2332 2.66E ‐04 17 7.48% 2427 2.77E ‐04 2 0.46% 149 1.70E ‐05 10 4.48% 1455 1.66E ‐04 18 8.16% 2649 3.02E ‐04 3 0.52% 170 1.93E ‐05 11 4.72% 1531 1.74E ‐04 19 5.64% 1831 2.09E ‐04 4 0.24% 79 8.96E ‐06 12 5.92% 1922 2.19E ‐04 20 4.23% 1374 1.57E ‐04 5 0.50% 163 1.86E ‐05 13 6.13% 1989 2.27E ‐04 21 3.21% 1041 1.19E ‐04 6 0.92% 298 3.40E ‐05 14 6.05% 1964 2.24E ‐04 22 3.26% 1057 1.20E ‐04 7 3.70% 1200 1.37E ‐04 15 6.98% 2266 2.58E ‐04 23 2.46% 799 9.10E ‐05 8 7.62% 2473 2.82E ‐04 16 7.12% 2311 2.63E ‐04 24 1.85% 600 6.84E ‐05 Total 32,460

Santa Rosa GDF
Wright Road ‐ South
TOG Exhaust Modeling ‐ Roadway Links, Traffic Volumes, and TOG Exhaust Emissions Year = 2025
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
TEXH_SEG2 Wright Rd ‐ South N ‐S 4 352 0.22 20.6 68 1.3 30 32,460 Emission Factors ‐ TOG Exhaust
Speed Category 12 3 4
Travel Speed (mph) 30
All Vehicles TOG Emissions per Vehicle (g/VMT) 0.03742
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and TOG Exhaust Emissions ‐ TEXH_SEG2 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 381 8.66E ‐04 9 7.18% 2332 5.31E ‐03 17 7.48% 2427 5.52E ‐03 2 0.46% 149 3.39E ‐04 10 4.48% 1455 3.31E ‐03 18 8.16% 2649 6.03E ‐03 3 0.52% 170 3.86E ‐04 11 4.72% 1531 3.48E ‐03 19 5.64% 1831 4.17E ‐03 4 0.24% 79 1.79E ‐04 12 5.92% 1922 4.37E ‐03 20 4.23% 1374 3.13E ‐03 5 0.50% 163 3.72E ‐04 13 6.13% 1989 4.52E ‐03 21 3.21% 1041 2.37E ‐03 6 0.92% 298 6.78E ‐04 14 6.05% 1964 4.47E ‐03 22 3.26% 1057 2.41E ‐03 7 3.70% 1200 2.73E ‐03 15 6.98% 2266 5.16E ‐03 23 2.46% 799 1.82E ‐03 8 7.62% 2473 5.63E ‐03 16 7.12% 2311 5.26E ‐03 24 1.85% 600 1.37E ‐03 Total 32,460

Santa Rosa GDF
Wright Road ‐ South
TOG Evaporative Emissions Modeling ‐ Roadway Links, Traffic Volumes, and TOG Evaporative Emissions Year =2 0 2 5
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
TEVAP_SEG2 Wright Rd ‐ South N ‐S 4 352 0.22 20.6 68 1.3 30 32,460 Emission Factors ‐ PM2.5 ‐ Evaporative TOG
Speed Category 12 3 4
Travel Speed (mph) 30
Emissions per Vehicle per Hour (g/hour) 1.55927
Emissions per Vehicle per Mile (g/VMT) 0.05198
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and TOG Evaporative Emissions ‐ TEVAP_SEG2 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 381 1.20E ‐03 9 7.18% 2332 7.37E ‐03 17 7.48% 2427 7.67E ‐03 2 0.46% 149 4.71E ‐04 10 4.48% 1455 4.60E ‐03 18 8.16% 2649 8.37E ‐03 3 0.52% 170 5.36E ‐04 11 4.72% 1531 4.84E ‐03 19 5.64% 1831 5.79E ‐03 4 0.24% 79 2.48E ‐04 12 5.92% 1922 6.08E ‐03 20 4.23% 1374 4.34E ‐03 5 0.50% 163 5.17E ‐04 13 6.13% 1989 6.28E ‐03 21 3.21% 1041 3.29E ‐03 6 0.92% 298 9.42E ‐04 14 6.05% 1964 6.21E ‐03 22 3.26% 1057 3.34E ‐03 7 3.70% 1200 3.79E ‐03 15 6.98% 2266 7.16E ‐03 23 2.46% 799 2.52E ‐03 8 7.62% 2473 7.81E ‐03 16 7.12% 2311 7.30E ‐03 24 1.85% 600 1.90E ‐03 Total 32,460

Santa Rosa GDF
Wright Road ‐ South
Fugitive Road PM2.5 Modeling ‐ Roadway Links, Traffic Volumes, and Fugitive Road PM2.5 Emissions Year = 2025
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
FUG_SEG2 Wright Rd ‐ South N ‐S 4 352 0.22 20.6 68 1.3 30 32,460 Emission Factors ‐ Fugitive PM2.5
Speed Category 12 3 4
Travel Speed (mph) 30
Tire Wear ‐ Emissions per Vehicle (g/VMT) 0.00209
Brake Wear ‐ Emissions per Vehicle (g/VMT) 0.01740
Road Dust ‐ Emissions per Vehicle (g/VMT) 0.01500
Total Fugitive PM2.5 ‐ Emissions per Vehicle (g/VMT) 0.03449 Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and Fugitive PM2.5 Emissions ‐ FUG_SEG2 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 381 7.99E ‐04 9 7.18% 2332 4.89E ‐03 17 7.48% 2427 5.09E ‐03 2 0.46% 149 3.12E ‐04 10 4.48% 1455 3.05E ‐03 18 8.16% 2649 5.55E ‐03 3 0.52% 170 3.56E ‐04 11 4.72% 1531 3.21E ‐03 19 5.64% 1831 3.84E ‐03 4 0.24% 79 1.65E ‐04 12 5.92% 1922 4.03E ‐03 20 4.23% 1374 2.88E ‐03 5 0.50% 163 3.43E ‐04 13 6.13% 1989 4.17E ‐03 21 3.21% 1041 2.18E ‐03 6 0.92% 298 6.25E ‐04 14 6.05% 1964 4.12E ‐03 22 3.26% 1057 2.22E ‐03 7 3.70% 1200 2.52E ‐03 15 6.98% 2266 4.75E ‐03 23 2.46% 799 1.68E ‐03 8 7.62% 2473 5.19E ‐03 16 7.12% 2311 4.85E ‐03 24 1.85% 600 1.26E ‐03 Total 32,460

Santa Rosa GDF
Sebastopol Road
DPM Modeling ‐ Roadway Links, Traffic Volumes, and DPM Emissions Year = 2025
Road Link Description Direction No. Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
DPM_SEG3 Sebastopol Rd ‐ East E ‐W 4 399 0.25 20.6 67.7 3.4 30 19,960 Emission Factors ‐ DPM
Speed Category 12 3 4
Travel Speed (mph) 30
Emissions per Vehicle (g/VMT) 0.00055
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and DPM Emissions ‐ DPM_SEG3 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 4.28% 855 3.25E ‐05 9 6.60% 1317 5.00E ‐05 17 5.61% 1120 4.25E ‐05 2 3.46% 691 2.62E ‐05 10 8.08% 1613 6.13E ‐05 18 3.80% 758 2.88E ‐05 3 3.62% 723 2.75E ‐05 11 6.44% 1284 4.88E ‐05 19 2.48% 495 1.88E ‐05 4 1.98% 395 1.50E ‐05 12 7.42% 1482 5.63E ‐05 20 1.00% 199 7.57E ‐06 5 1.65% 329 1.25E ‐05 13 6.27% 1252 4.75E ‐05 21 3.14% 627 2.38E ‐05 6 2.31% 460 1.75E ‐05 14 6.11% 1219 4.63E ‐05 22 4.29% 857 3.25E ‐05 7 4.79% 956 3.63E ‐05 15 5.12% 1021 3.88E ‐05 23 3.13% 625 2.37E ‐05 8 3.63% 725 2.76E ‐05 16 4.13% 824 3.13E ‐05 24 0.66% 132 5.00E ‐06 Total 19,960

Santa Rosa GDF
Sebastopol Road
PM2.5 Modeling ‐ Roadway Links, Traffic Volumes, and PM2.5 Emissions Year = 2025
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
PM25_SEG3 Sebastopol Rd ‐ East E ‐W 4 399 0.25 20.6 68 1.3 30 19,960 Emission Factors ‐ PM2.5
Speed Category 12 3 4
Travel Speed (mph) 30
Emissions per Vehicle (g/VMT) 0.001874
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and PM2.5 Emissions ‐ PM25_SEG3 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 234 3.02E ‐05 9 7.18% 1434 1.85E ‐04 17 7.48% 1493 1.93E ‐04 2 0.46% 92 1.18E ‐05 10 4.48% 894 1.16E ‐04 18 8.16% 1629 2.10E ‐04 3 0.52% 104 1.35E ‐05 11 4.72% 942 1.22E ‐04 19 5.64% 1126 1.45E ‐04 4 0.24% 48 6.25E ‐06 12 5.92% 1182 1.53E ‐04 20 4.23% 845 1.09E ‐04 5 0.50% 101 1.30E ‐05 13 6.13% 1223 1.58E ‐04 21 3.21% 640 8.27E ‐05 6 0.92% 183 2.37E ‐05 14 6.05% 1207 1.56E ‐04 22 3.26% 650 8.40E ‐05 7 3.70% 738 9.53E ‐05 15 6.98% 1393 1.80E ‐04 23 2.46% 491 6.34E ‐05 8 7.62% 1521 1.96E ‐04 16 7.12% 1421 1.84E ‐04 24 1.85% 369 4.77E ‐05 Total 19,960

Santa Rosa GDF
Sebastopol Road
TOG Exhaust Modeling ‐ Roadway Links, Traffic Volumes, and TOG Exhaust Emissions Year = 2025
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
TEXH_SEG3 Sebastopol Rd ‐ East E ‐W 4 399 0.25 20.6 68 1.3 30 19,960 Emission Factors ‐ TOG Exhaust
Speed Category 12 3 4
Travel Speed (mph) 30
All Vehicles TOG Emissions per Vehicle (g/VMT) 0.03742
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and TOG Exhaust Emissions ‐ TEXH_SEG3 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 234 6.04E ‐04 9 7.18% 1434 3.70E ‐03 17 7.48% 1493 3.85E ‐03 2 0.46% 92 2.36E ‐04 10 4.48% 894 2.31E ‐03 18 8.16% 1629 4.20E ‐03 3 0.52% 104 2.69E ‐04 11 4.72% 942 2.43E ‐03 19 5.64% 1126 2.90E ‐03 4 0.24% 48 1.25E ‐04 12 5.92% 1182 3.05E ‐03 20 4.23% 845 2.18E ‐03 5 0.50% 101 2.59E ‐04 13 6.13% 1223 3.15E ‐03 21 3.21% 640 1.65E ‐03 6 0.92% 183 4.73E ‐04 14 6.05% 1207 3.11E ‐03 22 3.26% 650 1.68E ‐03 7 3.70% 738 1.90E ‐03 15 6.98% 1393 3.59E ‐03 23 2.46% 491 1.27E ‐03 8 7.62% 1521 3.92E ‐03 16 7.12% 1421 3.67E ‐03 24 1.85% 369 9.52E ‐04 Total 19,960

Santa Rosa GDF
Sebastopol Road
TOG Evaporative Emissions Modeling ‐ Roadway Links, Traffic Volumes, and TOG Evaporative Emissions Year =2 0 2 5
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
TEVAP_SEG3 Sebastopol Rd ‐ East E ‐W 4 399 0.25 20.6 68 1.3 30 19,960 Emission Factors ‐ PM2.5 ‐ Evaporative TOG
Speed Category 12 3 4
Travel Speed (mph) 30
Emissions per Vehicle per Hour (g/hour) 1.55927
Emissions per Vehicle per Mile (g/VMT) 0.05198
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and TOG Evaporative Emissions ‐ TEVAP_SEG3 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 234 8.39E ‐04 9 7.18% 1434 5.14E ‐03 17 7.48% 1493 5.35E ‐03 2 0.46% 92 3.28E ‐04 10 4.48% 894 3.20E ‐03 18 8.16% 1629 5.83E ‐03 3 0.52% 104 3.74E ‐04 11 4.72% 942 3.37E ‐03 19 5.64% 1126 4.03E ‐03 4 0.24% 48 1.73E ‐04 12 5.92% 1182 4.23E ‐03 20 4.23% 845 3.03E ‐03 5 0.50% 101 3.60E ‐04 13 6.13% 1223 4.38E ‐03 21 3.21% 640 2.29E ‐03 6 0.92% 183 6.56E ‐04 14 6.05% 1207 4.33E ‐03 22 3.26% 650 2.33E ‐03 7 3.70% 738 2.64E ‐03 15 6.98% 1393 4.99E ‐03 23 2.46% 491 1.76E ‐03 8 7.62% 1521 5.45E ‐03 16 7.12% 1421 5.09E ‐03 24 1.85% 369 1.32E ‐03 Total 19,960

Santa Rosa GDF
Sebastopol Road
Fugitive Road PM2.5 Modeling ‐ Roadway Links, Traffic Volumes, and Fugitive Road PM2.5 Emissions Year = 2025
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
FUG_SEG3 Sebastopol Rd ‐ East E ‐W 4 399 0.25 20.6 68 1.3 30 19,960 Emission Factors ‐ Fugitive PM2.5
Speed Category 12 3 4
Travel Speed (mph) 30
Tire Wear ‐ Emissions per Vehicle (g/VMT) 0.00209
Brake Wear ‐ Emissions per Vehicle (g/VMT) 0.01740
Road Dust ‐ Emissions per Vehicle (g/VMT) 0.01500
Total Fugitive PM2.5 ‐ Emissions per Vehicle (g/VMT) 0.03449 Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and Fugitive PM2.5 Emissions ‐ FUG_SEG3 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 234 5.57E ‐04 9 7.18% 1434 3.41E ‐03 17 7.48% 1493 3.55E ‐03 2 0.46% 92 2.18E ‐04 10 4.48% 894 2.13E ‐03 18 8.16% 1629 3.87E ‐03 3 0.52% 104 2.48E ‐04 11 4.72% 942 2.24E ‐03 19 5.64% 1126 2.68E ‐03 4 0.24% 48 1.15E ‐04 12 5.92% 1182 2.81E ‐03 20 4.23% 845 2.01E ‐03 5 0.50% 101 2.39E ‐04 13 6.13% 1223 2.91E ‐03 21 3.21% 640 1.52E ‐03 6 0.92% 183 4.36E ‐04 14 6.05% 1207 2.87E ‐03 22 3.26% 650 1.55E ‐03 7 3.70% 738 1.75E ‐03 15 6.98% 1393 3.31E ‐03 23 2.46% 491 1.17E ‐03 8 7.62% 1521 3.61E ‐03 16 7.12% 1421 3.38E ‐03 24 1.85% 369 8.77E ‐04 Total 19,960

Santa Rosa GDF
Fulton Road
DPM Modeling ‐ Roadway Links, Traffic Volumes, and DPM Emissions Year = 2025
Road Link Description Direction No. Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
DPM_SEG4 Fulton Rd N‐S 4 352 0.22 20.6 67.7 3.4 30 44,360 Emission Factors ‐ DPM
Speed Category 12 3 4
Travel Speed (mph) 40
Emissions per Vehicle (g/VMT) 0.00053
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and DPM Emissions ‐ DPM_SEG4 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 4.28% 1900 6.09E ‐05 9 6.60% 2928 9.38E ‐05 17 5.61% 2489 7.98E ‐05 2 3.46% 1535 4.92E ‐05 10 8.08% 3586 1.15E ‐04 18 3.80% 1685 5.40E ‐05 3 3.62% 1608 5.15E ‐05 11 6.44% 2855 9.15E ‐05 19 2.48% 1101 3.53E ‐05 4 1.98% 877 2.81E ‐05 12 7.42% 3293 1.06E ‐04 20 1.00% 443 1.42E ‐05 5 1.65% 731 2.34E ‐05 13 6.27% 2782 8.92E ‐05 21 3.14% 1393 4.46E ‐05 6 2.31% 1023 3.28E ‐05 14 6.11% 2709 8.68E ‐05 22 4.29% 1905 6.10E ‐05 7 4.79% 2124 6.81E ‐05 15 5.12% 2270 7.28E ‐05 23 3.13% 1389 4.45E ‐05 8 3.63% 1612 5.17E ‐05 16 4.13% 1832 5.87E ‐05 24 0.66% 292 9.37E ‐06 Total 44,360

Santa Rosa GDF
Fulton Road
PM2.5 Modeling ‐ Roadway Links, Traffic Volumes, and PM2.5 Emissions Year = 2025
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
PM25_SEG4 Fulton Rd N‐S 4 352 0.22 20.6 68 1.3 30 44,360 Emission Factors ‐ PM2.5
Speed Category 12 3 4
Travel Speed (mph) 40
Emissions per Vehicle (g/VMT) 0.001469
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and PM2.5 Emissions ‐ PM25_SEG4 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 520 4.65E ‐05 9 7.18% 3187 2.85E ‐04 17 7.48% 3317 2.96E ‐04 2 0.46% 204 1.82E ‐05 10 4.48% 1988 1.78E ‐04 18 8.16% 3620 3.23E ‐04 3 0.52% 232 2.07E ‐05 11 4.72% 2093 1.87E ‐04 19 5.64% 2503 2.24E ‐04 4 0.24% 107 9.60E ‐06 12 5.92% 2627 2.35E ‐04 20 4.23% 1878 1.68E ‐04 5 0.50% 223 2.00E ‐05 13 6.13% 2718 2.43E ‐04 21 3.21% 1422 1.27E ‐04 6 0.92% 407 3.64E ‐05 14 6.05% 2684 2.40E ‐04 22 3.26% 1445 1.29E ‐04 7 3.70% 1640 1.47E ‐04 15 6.98% 3096 2.77E ‐04 23 2.46% 1092 9.75E ‐05 8 7.62% 3379 3.02E ‐04 16 7.12% 3159 2.82E ‐04 24 1.85% 820 7.33E ‐05 Total 44,360

Santa Rosa GDF
Fulton Road
TOG Exhaust Modeling ‐ Roadway Links, Traffic Volumes, and TOG Exhaust Emissions Year = 2025
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
TEXH_SEG4 Fulton Rd N‐S 4 352 0.22 20.6 68 1.3 30 44,360 Emission Factors ‐ TOG Exhaust
Speed Category 12 3 4
Travel Speed (mph) 40
All Vehicles TOG Emissions per Vehicle (g/VMT) 0.02780
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and TOG Exhaust Emissions ‐ TEXH_SEG4 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 520 8.80E ‐04 9 7.18% 3187 5.39E ‐03 17 7.48% 3317 5.61E ‐03 2 0.46% 204 3.44E ‐04 10 4.48% 1988 3.36E ‐03 18 8.16% 3620 6.12E ‐03 3 0.52% 232 3.92E ‐04 11 4.72% 2093 3.54E ‐03 19 5.64% 2503 4.23E ‐03 4 0.24% 107 1.82E ‐04 12 5.92% 2627 4.44E ‐03 20 4.23% 1878 3.17E ‐03 5 0.50% 223 3.78E ‐04 13 6.13% 2718 4.59E ‐03 21 3.21% 1422 2.40E ‐03 6 0.92% 407 6.88E ‐04 14 6.05% 2684 4.54E ‐03 22 3.26% 1445 2.44E ‐03 7 3.70% 1640 2.77E ‐03 15 6.98% 3096 5.23E ‐03 23 2.46% 1092 1.85E ‐03 8 7.62% 3379 5.71E ‐03 16 7.12% 3159 5.34E ‐03 24 1.85% 820 1.39E ‐03 Total 44,360

Santa Rosa GDF
Fulton Road
TOG Evaporative Emissions Modeling ‐ Roadway Links, Traffic Volumes, and TOG Evaporative Emissions Year =2 0 2 5
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
TEVAP_SEG4 Fulton Rd N‐S 4 352 0.22 20.6 68 1.3 30 44,360 Emission Factors ‐ PM2.5 ‐ Evaporative TOG
Speed Category 12 3 4
Travel Speed (mph) 40
Emissions per Vehicle per Hour (g/hour) 1.55927
Emissions per Vehicle per Mile (g/VMT) 0.03898
Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and TOG Evaporative Emissions ‐ TEVAP_SEG4 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 520 1.23E ‐03 9 7.18% 3187 7.56E ‐03 17 7.48% 3317 7.86E ‐03 2 0.46% 204 4.83E ‐04 10 4.48% 1988 4.71E ‐03 18 8.16% 3620 8.58E ‐03 3 0.52% 232 5.50E ‐04 11 4.72% 2093 4.96E ‐03 19 5.64% 2503 5.93E ‐03 4 0.24% 107 2.55E ‐04 12 5.92% 2627 6.23E ‐03 20 4.23% 1878 4.45E ‐03 5 0.50% 223 5.30E ‐04 13 6.13% 2718 6.44E ‐03 21 3.21% 1422 3.37E ‐03 6 0.92% 407 9.65E ‐04 14 6.05% 2684 6.36E ‐03 22 3.26% 1445 3.43E ‐03 7 3.70% 1640 3.89E ‐03 15 6.98% 3096 7.34E ‐03 23 2.46% 1092 2.59E ‐03 8 7.62% 3379 8.01E ‐03 16 7.12% 3159 7.49E ‐03 24 1.85% 820 1.94E ‐03 Total 44,360

Santa Rosa GDF
Fulton Road
Fugitive Road PM2.5 Modeling ‐ Roadway Links, Traffic Volumes, and Fugitive Road PM2.5 Emissions Year = 2025
Road Link Description Direction
No.

Lanes
Link
Length
(m)
Link
Length
(mi)
Link
Width
(m)
Link
Width
(ft)
Release
Height
( m)
Average
Speed
(mph)
Average
Vehicles
per Day
FUG_SEG4 Fulton Rd N‐S 4 352 0.22 20.6 68 1.3 30 44,360 Emission Factors ‐ Fugitive PM2.5
Speed Category 12 3 4
Travel Speed (mph) 40
Tire Wear ‐ Emissions per Vehicle (g/VMT) 0.00209
Brake Wear ‐ Emissions per Vehicle (g/VMT) 0.01740
Road Dust ‐ Emissions per Vehicle (g/VMT) 0.01500
Total Fugitive PM2.5 ‐ Emissions per Vehicle (g/VMT) 0.03449 Emisson Factors from CT‐EMFAC2017

2025 Hourly Traffic Volumes and Fugitive PM2.5 Emissions ‐ FUG_SEG4 Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s Hour
% Per
Hour VPH g/s
1 1.17% 520 1.09E ‐03 9 7.18% 3187 6.69E ‐03 17 7.48% 3317 6.96E ‐03 2 0.46% 204 4.27E ‐04 10 4.48% 1988 4.17E ‐03 18 8.16% 3620 7.59E ‐03 3 0.52% 232 4.86E ‐04 11 4.72% 2093 4.39E ‐03 19 5.64% 2503 5.25E ‐03 4 0.24% 107 2.25E ‐04 12 5.92% 2627 5.51E ‐03 20 4.23% 1878 3.94E ‐03 5 0.50% 223 4.69E ‐04 13 6.13% 2718 5.70E ‐03 21 3.21% 1422 2.98E ‐03 6 0.92% 407 8.54E ‐04 14 6.05% 2684 5.63E ‐03 22 3.26% 1445 3.03E ‐03 7 3.70% 1640 3.44E ‐03 15 6.98% 3096 6.50E ‐03 23 2.46% 1092 2.29E ‐03 8 7.62% 3379 7.09E ‐03 16 7.12% 3159 6.63E ‐03 24 1.85% 820 1.72E ‐03 Total 44,360

Health Risk Calculations

Santa Rosa GDF - Cumulative Roadway Health Risk Summary Health Impacts at Off-Site MEI Receptor
Cancer PM2.5
Risk Conc
Road (per million) (µg/m3) HI
Wright Road 5.26 0.33 < 0.01
Sebatopol Road 4.28 0.30 < 0.01
Fulton Road 1.50 0.09 < 0.01
Health Impacts at On-Site MEI Receptor
Cancer PM2.5
Risk Conc
Road (per million) (µg/m
3) HI
Wright Road 1.89 0.11 < 0.01
Sebatopol Road 0.85 0.05 < 0.01
Fulton Road 3.32 0.19 < 0.01

Santa Rosa GDF - Wright Road Traffic - TACs & PM2.5
AERMOD Risk Modeling Parameters and Maximum Concentrations Off-Site Maximum Residential Cancer Risk Receptor - 1.5 m receptor height Emissions Year 2025
Receptor Information
Number of Receptors 1
Receptor Height = 1.5 meters above ground level
Receptor distances = receptor at off-site MEI location
Meteorological Conditions
Sonoma County Airport Met Data 2013-2017
Land Use Classification rural
Wind speed = variable
Wind direction = variable
MEI Maximum Concentrations
Concentration (µg/m3)
Emission Years DPM Exhaust TOG Evaporative TOG
2025 0.00499 0.3365 0.4665
PM2.5 Concentrations (µg/m3)
Emission Years Total PM2.5
2025 0.3271

Santa Rosa GDF - Wright Road Traffic Maximum Cancer Risks Off-Site Maximum Residential Cancer Risk Receptor - 1.5 m receptor height 30-Year Residential Exposure
Cancer Risk Calculation Method
Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = Cair x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Cancer Potency Factors (mg/kg-day)-1

TAC CPF
DPM 1.10E+00
Vehicle TOG Exhaust 6.28E-03
Vehicle TOG Evaporative 3.70E-04
Infant/Child Adult
Age --> 3rd Trimester 0 - <2 2 - <16 16 - 30
Parameter
ASF 10 10 3 1
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
ED = 0.25 2 14 14
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
*
95th percentile breathing rates
Road Traffic Cancer Risk by Year - Project MEI Receptor Location Maximum - Exposure Information
Exposure Age Annual TAC Conc (ug/m3) Cancer Risk (per million) Exposure Duration Sensitivity Exhaust Evaporative Exhaust Evaporative Year Year (years) Age Factor DPM TOG TOG DPM TOG TOG Total 0 2023 0.25 -0.25 - 0* 10 0.0050 0.3365 0.4665 0.068 0.026 0.002 0.10 1 2023 1 1 10 0.0050 0.3365 0.4665 0.82 0.316 0.026 1.16 2 2024 1 2 10 0.0050 0.3365 0.4665 0.82 0.316 0.026 1.16 3 2025 1 3 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 4 2026 1 4 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 5 2027 1 5 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 6 2028 1 6 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 7 2029 1 7 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 8 2030 1 8 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 9 2031 1 9 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 10 2032 1 10 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 11 2033 1 11 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 12 2034 1 12 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 13 2035 1 13 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 14 2036 1 14 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 15 2037 1 15 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 16 2038 1 16 3 0.0050 0.3365 0.4665 0.13 0.050 0.004 0.18 17 2039 1 17 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 18 2040 1 18 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 19 2041 1 19 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 20 2042 1 20 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 21 2043 1 21 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 22 2044 1 22 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 23 2045 1 23 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 24 2046 1 24 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 25 2047 1 25 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 26 2048 1 26 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 27 2049 1 27 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 28 2050 1 28 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 29 2051 1 29 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 30 2052 1 30 1 0.0050 0.3365 0.4665 0.01 0.006 0.000 0.020 Total Increased Cancer Risk Total 3.71 1.430 0.117 5.26 * Third trimester of pregnancy

Santa Rosa GDF - Sebastopol Road Traffic - TACs & PM2.5 AERMOD Risk Modeling Parameters and Maximum Concentrations Off-Site Maximum Residential Cancer Risk Receptor - 1.5 m receptor height Emissions Year 2025
Receptor Information
Number of Receptors 1
Receptor Height = 1.5 meters above ground level
Receptor distances = receptor at off-site MEI location
Meteorological Conditions
Sonoma County Airport Met Data 2013-2017
Land Use Classification rural
Wind speed = variable
Wind direction = variable
MEI Maximum Concentrations
Concentration (µg/m3)
Emission Years DPM Exhaust TOG Evaporative TOG
2025 0.00386 0.3057 0.4256
PM2.5 Concentrations (µg/m3)
Emission Years Total PM2.5
2025 0.2982

Santa Rosa GDF - Sebastopol Road Traffic Maximum Cancer Risks Off-Site Maximum Residential Cancer Risk Receptor - 1.5 m receptor height 30-Year Residential Exposure
Cancer Risk Calculation Method
Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = Cair x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Cancer Potency Factors (mg/kg-day)-1

TAC CPF
DPM 1.10E+00
Vehicle TOG Exhaust 6.28E-03
Vehicle TOG Evaporative 3.70E-04
Infant/Child Adult
Age --> 3rd Trimester 0 - <2 2 - <16 16 - 30
Parameter
ASF 10 10 3 1
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
ED = 0.25 2 14 14
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
*
95th percentile breathing rates
Road Traffic Cancer Risk by Year - Maximum Impact Receptor Location Maximum - Exposure Information
Exposure Age Annual TAC Conc (ug/m3) Cancer Risk (per million) Exposure Duration Sensitivity Exhaust Evaporative Exhaust Evaporative Year Year (years) Age Factor DPM TOG TOG DPM TOG TOG Total 0 2023 0.25 -0.25 - 0* 10 0.0039 0.3057 0.4256 0.052 0.024 0.002 0.08 1 2023 1 1 10 0.0039 0.3057 0.4256 0.63 0.287 0.024 0.94 2 2024 1 2 10 0.0039 0.3057 0.4256 0.63 0.287 0.024 0.94 3 2025 1 3 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 4 2026 1 4 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 5 2027 1 5 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 6 2028 1 6 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 7 2029 1 7 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 8 2030 1 8 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 9 2031 1 9 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 10 2032 1 10 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 11 2033 1 11 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 12 2034 1 12 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 13 2035 1 13 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 14 2036 1 14 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 15 2037 1 15 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 16 2038 1 16 3 0.0039 0.3057 0.4256 0.10 0.045 0.004 0.15 17 2039 1 17 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 18 2040 1 18 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 19 2041 1 19 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 20 2042 1 20 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 21 2043 1 21 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 22 2044 1 22 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 23 2045 1 23 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 24 2046 1 24 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 25 2047 1 25 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 26 2048 1 26 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 27 2049 1 27 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 28 2050 1 28 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 29 2051 1 29 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 30 2052 1 30 1 0.0039 0.3057 0.4256 0.01 0.005 0.000 0.017 Total Increased Cancer Risk Total 2.87 1.299 0.107 4.28 * Third trimester of pregnancy

Santa Rosa GDF - Fulton Road Traffic - TACs & PM2.5
AERMOD Risk Modeling Parameters and Maximum Concentrations Off-Site Maximum Residential Cancer Risk Receptor - 1.5 m receptor height Emissions Year 2025
Receptor Information
Number of Receptors 1
Receptor Height = 1.5 meters above ground level
Receptor distances = receptor at off-site MEI location
Meteorological Conditions
Sonoma County Airport Met Data 2013-2017
Land Use Classification rural
Wind speed = variable
Wind direction = variable
MEI Maximum Concentrations
Concentration (µg/m3)
Emission Years DPM Exhaust TOG Evaporative TOG
2025 0.00157 0.07140 0.1002
PM2.5 Concentrations (µg/m3)
Emission Years Total PM2.5
2025 0.09257

Santa Rosa GDF - Fulton Road Traffic Maximum Cancer Risks Off-Site Maximum Residential Cancer Risk Receptor - 1.5 m receptor height 30-Year Residential Exposure
Cancer Risk Calculation Method
Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = Cair x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Cancer Potency Factors (mg/kg-day)-1

TAC CPF
DPM 1.10E+00
Vehicle TOG Exhaust 6.28E-03
Vehicle TOG Evaporative 3.70E-04
Infant/Child Adult
Age --> 3rd Trimester 0 - <2 2 - <16 16 - 30
Parameter
ASF 10 10 3 1
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
ED = 0.25 2 14 14
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
*
95th percentile breathing rates
Road Traffic Cancer Risk by Year - Project MEI Receptor Location Maximum - Exposure Information
Exposure Age Annual TAC Conc (ug/m3) Cancer Risk (per million) Exposure Duration Sensitivity Exhaust Evaporative Exhaust Evaporative Year Year (years) Age Factor DPM TOG TOG DPM TOG TOG Total 0 2023 0.25 -0.25 - 0* 10 0.0016 0.0714 0.1002 0.021 0.006 0.000 0.03 1 2023 1 1 10 0.0016 0.0714 0.1002 0.26 0.067 0.006 0.33 2 2024 1 2 10 0.0016 0.0714 0.1002 0.26 0.067 0.006 0.33 3 2025 1 3 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 4 2026 1 4 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 5 2027 1 5 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 6 2028 1 6 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 7 2029 1 7 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 8 2030 1 8 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 9 2031 1 9 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 10 2032 1 10 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 11 2033 1 11 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 12 2034 1 12 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 13 2035 1 13 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 14 2036 1 14 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 15 2037 1 15 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 16 2038 1 16 3 0.0016 0.0714 0.1002 0.04 0.011 0.001 0.05 17 2039 1 17 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 18 2040 1 18 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 19 2041 1 19 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 20 2042 1 20 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 21 2043 1 21 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 22 2044 1 22 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 23 2045 1 23 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 24 2046 1 24 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 25 2047 1 25 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 26 2048 1 26 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 27 2049 1 27 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 28 2050 1 28 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 29 2051 1 29 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 30 2052 1 30 1 0.0016 0.0714 0.1002 0.00 0.001 0.000 0.006 Total Increased Cancer Risk Total 1.17 0.303 0.025 1.50 * Third trimester of pregnancy

Santa Rosa GDF - Wright Road Traffic Maximum Cancer Risks On-Site Maximum Residential Cancer Risk Receptor - 5.8 m receptor height 30-Year Residential Exposure
Cancer Risk Calculation Method
Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = Cair x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Cancer Potency Factors (mg/kg-day)-1

TAC CPF
DPM 1.10E+00
Vehicle TOG Exhaust 6.28E-03
Vehicle TOG Evaporative 3.70E-04
Infant/Child Adult
Age --> 3rd Trimester 0 - <2 2 - <16 16 - 30
Parameter
ASF 10 10 3 1
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
ED = 0.25 2 14 14
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
*
95th percentile breathing rates
Road Traffic Cancer Risk by Year - Project MEI Receptor Location Maximum - Exposure Information
Exposure Age Annual TAC Conc (ug/m3) Cancer Risk (per million) Exposure Duration Sensitivity Exhaust Evaporative Exhaust Evaporative Year Year (years) Age Factor DPM TOG TOG DPM TOG TOG Total 0 2023 0.25 -0.25 - 0* 10 0.0019 0.1114 0.1545 0.025 0.009 0.001 0.03 1 2023 1 1 10 0.0019 0.1114 0.1545 0.30 0.105 0.009 0.42 2 2024 1 2 10 0.0019 0.1114 0.1545 0.30 0.105 0.009 0.42 3 2025 1 3 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 4 2026 1 4 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 5 2027 1 5 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 6 2028 1 6 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 7 2029 1 7 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 8 2030 1 8 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 9 2031 1 9 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 10 2032 1 10 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 11 2033 1 11 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 12 2034 1 12 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 13 2035 1 13 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 14 2036 1 14 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 15 2037 1 15 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 16 2038 1 16 3 0.0019 0.1114 0.1545 0.05 0.016 0.001 0.07 17 2039 1 17 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 18 2040 1 18 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 19 2041 1 19 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 20 2042 1 20 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 21 2043 1 21 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 22 2044 1 22 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 23 2045 1 23 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 24 2046 1 24 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 25 2047 1 25 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 26 2048 1 26 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 27 2049 1 27 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 28 2050 1 28 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 29 2051 1 29 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 30 2052 1 30 1 0.0019 0.1114 0.1545 0.01 0.002 0.000 0.007 Total Increased Cancer Risk Total 1.38 0.474 0.039 1.89 * Third trimester of pregnancy

Santa Rosa GDF - Sebastopol Road Traffic - TACs & PM2.5 AERMOD Risk Modeling Parameters and Maximum Concentrations On-Site Maximum Residential Cancer Risk Receptor - 5.8 m receptor height Emissions Year 2025
Receptor Information
Number of Receptors 1
Receptor Height = 5.8 meters above ground level
Receptor distances = receptor at on-site MEI location
Meteorological Conditions
Sonoma County Airport Met Data 2013-2017
Land Use Classification rural
Wind speed = variable
Wind direction = variable
MEI Maximum Concentrations
Concentration (µg/m3)
Emission Years DPM Exhaust TOG Evaporative TOG
2025 0.00081 0.0528 0.0736
PM2.5 Concentrations (µg/m3)
Emission Years Total PM2.5
2025 0.0515

Santa Rosa GDF - Sebastopol Road Traffic Maximum Cancer Risks On-Site Maximum Residential Cancer Risk Receptor - 5.8 m receptor height 30-Year Residential Exposure
Cancer Risk Calculation Method
Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = Cair x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Cancer Potency Factors (mg/kg-day)-1

TAC CPF
DPM 1.10E+00
Vehicle TOG Exhaust 6.28E-03
Vehicle TOG Evaporative 3.70E-04
Infant/Child Adult
Age --> 3rd Trimester 0 - <2 2 - <16 16 - 30
Parameter
ASF 10 10 3 1
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
ED = 0.25 2 14 14
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
*
95th percentile breathing rates
Road Traffic Cancer Risk by Year - Maximum Impact Receptor Location Maximum - Exposure Information
Exposure Age Annual TAC Conc (ug/m3) Cancer Risk (per million) Exposure Duration Sensitivity Exhaust Evaporative Exhaust Evaporative Year Year (years) Age Factor DPM TOG TOG DPM TOG TOG Total 0 2023 0.25 -0.25 - 0* 10 0.0008 0.0528 0.0736 0.011 0.004 0.000 0.02 1 2023 1 1 10 0.0008 0.0528 0.0736 0.13 0.050 0.004 0.19 2 2024 1 2 10 0.0008 0.0528 0.0736 0.13 0.050 0.004 0.19 3 2025 1 3 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 4 2026 1 4 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 5 2027 1 5 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 6 2028 1 6 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 7 2029 1 7 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 8 2030 1 8 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 9 2031 1 9 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 10 2032 1 10 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 11 2033 1 11 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 12 2034 1 12 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 13 2035 1 13 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 14 2036 1 14 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 15 2037 1 15 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 16 2038 1 16 3 0.0008 0.0528 0.0736 0.02 0.008 0.001 0.03 17 2039 1 17 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 18 2040 1 18 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 19 2041 1 19 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 20 2042 1 20 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 21 2043 1 21 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 22 2044 1 22 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 23 2045 1 23 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 24 2046 1 24 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 25 2047 1 25 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 26 2048 1 26 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 27 2049 1 27 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 28 2050 1 28 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 29 2051 1 29 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 30 2052 1 30 1 0.0008 0.0528 0.0736 0.00 0.001 0.000 0.003 Total Increased Cancer Risk Total 0.60 0.225 0.018 0.85 * Third trimester of pregnancy

Santa Rosa GDF - Fulton Road Traffic Maximum Cancer Risks On-Site Maximum Residential Cancer Risk Receptor - 5.8 m receptor height 30-Year Residential Exposure
Cancer Risk Calculation Method
Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = Cair x DBR x A x (EF/365) x 10-6
Where: C air = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Cancer Potency Factors (mg/kg-day)-1

TAC CPF
DPM 1.10E+00
Vehicle TOG Exhaust 6.28E-03
Vehicle TOG Evaporative 3.70E-04
Infant/Child Adult
Age --> 3rd Trimester 0 - <2 2 - <16 16 - 30
Parameter
ASF 10 10 3 1
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
ED = 0.25 2 14 14
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
*
95th percentile breathing rates
Road Traffic Cancer Risk by Year - Project MEI Receptor Location Maximum - Exposure Information
Exposure Age Annual TAC Conc (ug/m3) Cancer Risk (per million) Exposure Duration Sensitivity Exhaust Evaporative Exhaust Evaporative Year Year (years) Age Factor DPM TOG TOG DPM TOG TOG Total 0 2023 0.25 -0.25 - 0* 10 0.0036 0.1481 0.2079 0.048 0.011 0.001 0.06 1 2023 1 1 10 0.0036 0.1481 0.2079 0.58 0.139 0.011 0.73 2 2024 1 2 10 0.0036 0.1481 0.2079 0.58 0.139 0.011 0.73 3 2025 1 3 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 4 2026 1 4 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 5 2027 1 5 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 6 2028 1 6 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 7 2029 1 7 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 8 2030 1 8 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 9 2031 1 9 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 10 2032 1 10 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 11 2033 1 11 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 12 2034 1 12 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 13 2035 1 13 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 14 2036 1 14 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 15 2037 1 15 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 16 2038 1 16 3 0.0036 0.1481 0.2079 0.09 0.022 0.002 0.12 17 2039 1 17 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 18 2040 1 18 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 19 2041 1 19 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 20 2042 1 20 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 21 2043 1 21 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 22 2044 1 22 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 23 2045 1 23 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 24 2046 1 24 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 25 2047 1 25 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 26 2048 1 26 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 27 2049 1 27 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 28 2050 1 28 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 29 2051 1 29 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 30 2052 1 30 1 0.0036 0.1481 0.2079 0.01 0.002 0.000 0.013 Total Increased Cancer Risk Total 2.64 0.629 0.052 3.32 * Third trimester of pregnancy
BAAQMD RASTER Screening Data – Highway Cancer Risk Impacts at MEI

BAAQMD RASTER Screening Data – Highway PM2.5 Concentration Impacts at MEI

BAAQMD RASTER Screening Data – Highway Cancer Risk Impacts at Future Resident

BAAQMD RASTER Screening Data – Highway PM2.5 Concentration Impacts at Future Resident

Santa Rosa City CouncilAugust 19, 2025

Santa Rosa City Council
August 19, 2025