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HomeMy WebLinkAbout07-ATTACHMENT SATTACHMENT S HEALTH RISK ASSESSMENT PREPARED BY RAMBOLL US CORPORATION DATED OCTOBER 3, 2019 MEMORANDUM To: Diana Salazar, Costco Wholesale From: Joseph Hower and Yi Tian, Ramboll US Corporation Subject: Human Health Risk Assessment for the Operation of the Gasoline Dispensing Facility at Costco Tustin Ranch INTRODUCTION Costco currently operates a warehouse store at 2655 EI Camino Real, Tustin California. Costco is proposing a gasoline dispensing facility ("GDF" or "fuel station") with 16 dispensers (i.e., 32 fueling positions) on the southeastern portion of the warehouse parking lot and relocation of parking to the current location of the neighboring Goodyear service facility, which will be demolished. This memorandum provides a human health risk assessment (HRA) of the on -road mobile source activities associated with the operation of the proposed Costco GDF (the "Project") in support of a California Environmental Quality Act (CEQA) Class 32 Categorical Exemption Evaluation for the Project. Specifically, emissions of toxic air contaminants (TACs) associated with Costco members' passenger cars travel, starting and idling, fuel delivery trucks travel, starting and idling, and gasoline transfer and dispensing were estimated in order to evaluate if the Project would cause a significant health risk impact. We conclude that the vehicle activities associated with the proposed Project would not cause a significant health risk impact, as shown in Table A below. ENVIRONMENT & HEALTH Date: October 4, 2019 Ramboll 5 Park Plaza Suite 500 Irvine, CA 92614 USA T +1 949 261 5151 F +1 949 261 6202 www.ramboll.com Table A. Health Risk Assessment Results Maximum Estimated Maximum Estimated Cancer Risk Chronic Hazard Maximum Estimated Receptor Type (in a million) Index Acute Hazard Index Residential 4.18 0.0139 0.0293 Sensitive 0.21 0.0007 0.0056 Worker 2.19 0.0645 0.2030 SCAQMD Threshold' 10 1 1 Notes: ' SCAQMD Air Quality Significance Thresholds. Available at: http://www.agmd.gov/docs/default-source/ceqa/handbook/scaqmd-air-qualitysignificance-thresholds.pdf. Accessed: September 2019. \\wcirvfpsl\projects\C\Costco\1690003739\Tustin Ranch\Memos\HRA\Costco_Tustin_HRA_Memo_20191004.docx 1/7 A brief description of the methodology and results of the analyses are provided in the following sub -sections. METHODOLOGY TAC Emission Inventory Operational Mobile Sources Ramboll developed TAC emission inventories for the vehicle activities associated with the operation of the proposed GDF. Sources of Project -related vehicle emissions include passenger car travel, starting and idling, and fuel delivery truck travel, starting, and idling. This analysis focused on TAC components of volatile organic compound (VOC) and particulate matter emissions found in gasoline and diesel vehicle exhaust. The TACs analyzed in this HRA are based on the Federal Highway Administration's (FHWA) nine priority mobile source air toxics (MSATs), listed below., • Diesel Particulate Matter (DPM) • 1,3 -Butadiene • Acetaldehyde • Acrolein • Benzene • Ethyl Benzene • Formaldehyde • Naphthalene • Polycyclic Organic Matter (POM), which includes the following fifteen compounds2: acenaphthene, acenaphthylene, anthracene, benz(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, benzo(g,h,i)perylene, benzo(k)fluoranthene, chrysene, dibenz(a,h)anthracene, fluoranthene, fluorene, indeno(1,2,3-c,d)pyrene, phenanthrene, and pyrene. The above nine priority MSAT serve as the TACs for this HRA. Cancer and chronic non -cancer impacts for the diesel -fueled fuel delivery trucks were estimated using DPM emissions. Cancer and non -cancer chronic impacts for the gasoline -fueled passenger vehicles were estimated by speciating reactive organic gas (ROG) and particulate matter smaller than 2.5 microns (PM2.$) emissions. Acute impacts from all vehicles were estimated by speciating ROG and PM2.5 emissions. Table 1 summarizes the speciation profile data used in this analysis. FHWA. 2016. Updated Interim Guidance on Mobile Source Air Toxic Analysis in NEPA documents. October. Available at: ht;ps:Cov/envrrurrmv,nr/air C{:r, _t i5 pow -y and guiderice/rnsar'20I1 n ,i'. .o&. Accessed: October 2019. FHWA. 2016. Frequently Asked Questions (FAQ) Conducting Quantitative MSAT Analysis for FHWA NEPA Documents. October. Available at: dot. go\,,or,/—o-ttl`. a pc)'-_-, G;id g,J,danc:atmo':as rnsal -3 a.r. !. Accessed: October 2019. 2/7 Ramboll utilized California Air Resources Board's (CARE) approved On -Road Mobile -Source Emission Factor model3 (EMFAC2017) to estimate ROG, PM2.5, and DPM emissions from fuel delivery trucks and passenger vehicles. DPM was assumed to be equivalent to particulate matter less than 10 microns (PM1o) emissions from diesel -fueled trucks. The following assumptions were used to calculate emissions from Project -related mobile source emissions: • EMFAC2017 Default Activity Inputs; - Run Mode: Emissions; - Run Type: Default Activity; - Area: Orange County (South Coast); - Calendar Year: 2020; - Season: Annual; - Aggregation Level: Day; - Vehicle Class: EMFAC2007 Vehicle Classes, LDA, LDT1, LDT2, MDV, HHDT; - Model Year: Aggregated; - Sneed: Aggregated; and - Output Natural Gas Heavy Duty Vehicles: Yes; - Output: All pollutants, activities, and output by process. • EMFAC2017 Project -Level Inputs; - Run Mode: Emission Rates; - Run Type: Project -Level Assessment; - Area: Orange County (South Coast); - Calendar Year: 2020; - Season: Annual; - Vehicle Class: EMFAC2007 Vehicle Classes, LDA, LDT1, LDT2, MDV, HHDT; - Model Year: Aggregated; - Fuel: By fuel; - Sneed: 5 mph; - Meteoroloav: 64°F, 47% relative humidity; and - Output: All pollutants. 3 CARB. 2019. MSEI - Modeling Tools - EMFAC Software and Technical Support Documentation. Available at: � . ). -�Wj?_ _ - mode Accessed: October 2019. 3/7 • Passenger cars — Vehicle class assumed to be light-duty autos, light-duty trucks, or medium duty vehicles; — Traffic volumes on modeled roadways provided by Kittelson & Associates; and — Idle duration of 12 minutes based on an average transaction time of four minutes and a maximum queue of five vehicles per each of the four lines. • Fuel delivery trucks — Vehicle class assumed to be heavy -heavy duty trucks; — Truck volumes on modeled roadways (eight fuel delivery trucks per day) provided by Costco; and — Idle duration of five minutes based on CARB Air Toxic Control Measure to Limit Diesel -Fueled Commercial Motor Vehicle Idling .4 Details of the mobile source emission calculations are presented in Appendix A. Operational Gasoline Transfer and Dispensing In addition to the TAC emissions from operational mobile sources, Ramboll estimated TAC emissions associated with gasoline transfer and dispensing. Emissions from gasoline transfer and dispensing mainly occur during loading, breathing, refueling, spillage, and from hose permeation. Emission factors were obtained from Table X-1 of SCAQMD Risk Assessment Procedures for Rules 1401, 1401.1, and 212 (SCAQMD Risk Assessment Guidance).5 The following assumptions were used to calculate emissions from gasoline transfer and dispensing: Maximum hourly throughput of 4,800 gallons per hour based on a maximum of 15 vehicles per dispensing position and an average fill -up of 10 gallons per vehicle. • Annual throughput of 24.6 million gallons per year. Details of the gasoline transfer and dispensing emission calculations are presented in Appendix A. Air Dispersion Modeling Model Selection The AMS/EPA Regulatory Model Improvement Committee (AERMIC) Model (AERMOD) (Version 18081) was used to estimate the ambient air TAC concentrations.6 AERMOD has been approved for use in various regulatory applications by USEPA, CARB, and SCAQMD. AERMOD uses mathematical equations to simulate the movement and dispersion of air contaminants in the atmosphere. For each receptor 4 CARB. 2016. Airborne Toxic Control Measure to Limit Diesel -Fueled Commercial Motor Vehicle Idling. Available at: ,, vr.3 �; b.r.a -,j - Accessed: October 2019. 5 SCAQMD. 2017. Risk Assessment Procedures for Rules 1401, 1401.1 and 212. September 1. Available at: http://www.agmd.gov/docs/default-sou rce/permitting/rule-1401-risk-assessment/riskassessproc-v8- l.pdf?sfvrsn=l2. Accessed: October 2019. 6 USEPA. 2019. Meteorological Processors and Accessory Programs. August. Available at: -., :r i -)--a 7;t. Accessed: October 2019. 4/7 location, the model generates air concentrations (or air dispersion factors as unit emissions were modeled) that result from emissions from multiple sources. The regulatory default option, urban dispersion characteristics, and 1 -hour and PERIOD averaging times were selected based the SCAQMD modeling recommendations .7 Dispersion model averaging times are specified based on the averaging times of ambient air quality standards and the air quality significance thresholds established by the appropriate regulatory agencies. For the HRA, the 1 -hour averaging time was used to evaluate acute (short-term) effects and the PERIOD averaging time (average concentration for the 5 -year meteorological data set) was used to evaluate chronic (long- term) health effects. Emissions from passenger vehicle activity were assumed to occur between the hours of 5:00 AM and 10:00 PM, 7 days per week, and 365 days per year based on the anticipated operating schedule of the fueling station. Emissions from fuel delivery truck activity were to occur 24 hours per day, 7 days per week, and 365 days per year based on the potential for fuel to be delivered at any time of day. Emissions were modeled using the x/Q ("chi over cue") method such that each source group had unit emission rates (i.e., a total of 1 gram per second [g/s]) and the model estimated dispersion factors (with a unit of micrograms per cubic meter per grams per second [µg/m3]/[g/s])• Source Characterization Off-site vehicle travel was evaluated for roadway links in the Project vicinity, extending approximately 0.25 miles from the fueling station boundary. Line (area) sources were used in the air dispersion model to represent the on-site and off-site passenger vehicle and fuel delivery truck travel. Areapoly sources were used to represent on-site passenger vehicle and fuel delivery truck idling. The GDF emission sources were modeled as point sources (loading and breathing emissions) and volume sources (refueling, hose permeation, and spillage). Modeled source locations are shown in Figure 1. Source parameters for mobile sources (Table B-1) were developed based on USEPA's Particulate Matter Conformity Guidance for Hotspot Analysis$ and the USEPA AERMOD user guide.9 Table B-2 presents a list of mobile sources and modeled emission rates. A source group was created for each roadway segment. As described earlier, modeling was done using the x/Q method and emission rates were set to 1 gram per second for each source group. Source parameters for the GDF emission sources (Tables B-3 and B-4) were developed based on SCAQMD Risk Assessment Guidance and the dimensions of the proposed GDF.10 The emission rate for each source was modeled as 1 gram per second. SCAQMD Modeling Guidance for AERMOD. Available at: ` f tr? '; :,:^r,^ .agmd.gov, horr2, o , duality/meteorological Accessed: October 2019. S EPA. 2015. Transportation Conformity Guidance for Quantitative Hot -spot Analyses in PM2.5 and PM10 Nonattainment and Maintenance Areas Appendix J: Additional Reference Information on Air Quality Models and Data Inputs. Available at: rttp ',` . , r �.0 �,„ Ex,, ZvPdfi.ccl0D�c_-key=P100NN?2 PJf. Accessed: October 2019. 9 USEPA. User's Guide for the AMS/EPA Regulatory Model (AERMOD). Available at: htt[)a:'//v,,,,,vl3 e P a g:i„J. t,- r� N-_ '� vJ'w -1) )d u5=rgu �le.pJf. Accessed: October 2019. to The exact location of the proposed storage tank is unknown. Therefore, the loading and breathing emission sources associated with the storage tank were placed in the center of the gas station canopy. 5/7 Meteorology SCAQMD provides AERMOD model -ready meteorological data sets for use in air quality and risk impact analyses in the SCAB. SCAQMD's John Wayne International Airport (KSNA) meteorological data set was selected to analyze the Project's impacts, based on that station's close geographic proximity to the Project (Figure 2) and best representation of the facility's meteorological conditions (such as prevailing winds), terrain, and surrounding land use." The SCAQMD meteorological data set is for January 1, 2012 to December 31, 2016.12 Miramar was used as upper air meteorological station in this data set. Receptors Analyzing impacts of receptors close to sources of TACs is important in determining cancer and non - cancer health risk impacts. Receptor exposure to emission sources is greatest nearest to the emission source. ARB and SCAQMD emissions and modeling analyses showed an 80 -percent drop-off in pollutant concentration at approximately 1,000 feet from traffic -related sources.13 In order to evaluate health impacts to off-site receptors, including nearby residential and sensitive receptor populations, the geographic scope of this assessment was extended to a one-quarter mile radius or 1,320 feet from the modeled Project sources. Receptors around the project development were covered in two grids of receptors: • Fine Grid 25 m x 25 m up to 200 m from modeled Project sources; and • Coarse Grid 100 m x 100 m from 200 m to 1,320 feet from modeled Project sources. Grid receptors were classified as residential or worker based on the current land use. SCAQMD requires inclusion of sensitive receptors in a health risk analysis and identifies the following as sensitive receptors: long-term health care facilities, rehabilitation centers, convalescent centers, retirement homes, residences, schools, playgrounds, child care centers, and athletic facilities. 14 Non- residential sensitive receptor locations were identified within a one-quarter mile (1,320 feet) radius of the modeled Project sources, based on publicly available databases.15 Google Earth Pro was also used 11 SCAQMD. 2017. Risk Assessment Procedures for Rules 1401, 1401.1 and 212. Version 8.1. September. Available at: htri, ';' .:;;, 3arnd.g w doesJdefa:ilt so rrce/perrnittl y `r ne 1^ 1 -nil. ses r �t'r��.a5srssproc ',8 1.pdf7sfvrsrr=lZ. Accessed: October 2019. 12 SCAQMD. 2018. Data forAERMOD. Available at: https://.v,,^r� ?,;,n i.a.lih rr=,`a r q,.a +tyiair-q-aality- datC-stu-'iesa iiatt~iioir;gical-data/data-far-aer+l)od. Accessed: October 2019. 13 CARB. Air Quality and Land Use Handbook: A Community Health Perspective. 2005. Available at: hitt . ;', r; aro ca gov/ch!handbook.pdf. Accessed: October 2019. 14 SCAQMD. 1993. CEQA Air Quality Handbook. April. 15 California Department of Education, California School Directory (Available at: h-."; :;'L .:;• td-µ�.�;_�.go�='rei'sd. Accessed: October 2019.). California Community Care Licensing Division - licensed care facilities including adult residential facilities and daycares (Available at: hlttps://secure dsz; ca gov/Carerac ,avSL-a . r, rri--'a ;, .;rlq-;'. Accessed: October 2019.). California Office of Statewide Health Planning and Development, Automated Licensing Information and Report Tracking System - hospitals and long-term care facilities (Available at: a g.r 'hid"Prod, cts/Li;ti-i herr'. Accessed: October 2019.). Davis Demographics School Site Locator - K-12 Schools (Available at: Accessed: October 2019.). 6/7 to identify schools and day care centers in the Project vicinity. Based on the database search, one sensitive receptor, Congregation B'nai Israel Child Development Center, was identified within a one- quarter mile radius from the modeled Project sources. Receptor locations are illustrated in Figure 2. Receptor heights were assumed to be at ground -level based on SCAQMD guidance.16 Health Risk Assessment Ramboll used CARB's Hotspots Analysis and Reporting Program (HARP2) Air Dispersion and Modeling and Risk Tool 17 (ADMRT) to calculate the health risks associated with emissions from Project -related mobile sources. HARP2 has been developed by CARB for estimating health risk values and it incorporates the requirements of the latest version of the Office of Environmental Health Hazard Assessment (OEHHA) Air Toxics Hot Spots Risk Assessment guidelines.18 MSAT emissions input to HARP2 are shown in Appendix A. Lifetime cancer risk, chronic hazard index (HIC), and acute hazard index (HIA) were calculated at each receptor. To estimate these impacts, the following runs were performed for the Project: residential cancer risk, residential non -cancer chronic risk, worker cancer risk, worker non -cancer chronic risk, and non -cancer acute risk. The health risk assessment options chosen for these runs (Table 2) were based on SCAQMD's default assumptions for HRAs.19 RESULTS A summary of the maximum health risk impacts is shown in Table 3. HARP2 outputs for all receptors are shown in Appendix C. As shown in this table, the emissions associated with operation of the proposed Project are less than the SCAQMD significance thresholds20. 16 SCAQMD. 2018. SCAQMD Modeling Guidance for AERMOD. Available at: https://wvwv a and quality/air-quality-data-stud ?s m -f e,)ro'Accessed: October 2019. 17 CARE. 2019. Hot Spots Analysis and Reporting Program (HARP). May. Available at: latps:llv,,,vv3.arb.ca.gov/to tarp ii 'r rarrl. Accessed: October 2019. 18 Cal/EPA. 2015. Air Toxics Hot Spots Program Guidance Manual for Preparation of Health Risk Assessments. Office of Environmental Health Hazard Assessment. February. Available at: htt_ps' //oehha ca.go'//air/c-[nr/o,) preparation -health -risk -0. Accessed: October 2019. 19 SCAQMD. 2018. AB2588 and Rule 1402 Supplemental Guidelines. September. Available at: h'CIC.:IJa`t1;b'u;,r�.;�^-rJ ?'�;''CC�:f;.`7.' ,. -...>_•n-mao'lr.rl`J-2�i3;j-5t!F'i.n:_ _. ,.' Accessed: October 2019. 20 SCAQMD. 2019. South Coast AQMD Air Quality Significance Thresholds. April. Available at: Id ,'U'."—s' i{ ?Ir q iallty.s:gn. r.":i Accessed: October 2019. 7/7 TABLES Table 1. Mobile Source Air Toxics Speciation Profiles Tustin Ranch Costco Fuel Station Orange County, California Non -Criteria Air Pollutant Speciation Profile Speciated MSAT/COPC Maximum of CARB Profiles OG2303 and 1,3 -Butadiene, Acetaldehyde, Acrolein, ROG running and idling exhaust OG2304 1 Benzene, Ethyl Benzene, Formaldehyde, emissions from gasoline -fueled vehicles Naphthalene USEPA MOVES Gasoline VOC2 Profile POM Maximum of CARB Profiles OG2301 and 1,3 -Butadiene, Acetaldehyde, Acrolein, ROG starting exhaust emissions from Benzene, Ethyl Benzene, Formaldehyde, gasoline -fueled vehicles OG23024 Naphthalene USEPA MOVES Gasoline VOC2 Profile POM ROG evaporative emissions from CARB Profile OG2315 s Benzene, Ethyl Benzene gasoline -fueled vehicles PM2.5 running and starting exhaust 36 USEPA MOVES Gasoline PM2.5 Profile Naphthalene, POM emissions from gasoline -fueled vehicles DPM6 N/A DPM ROG running exhaust emissions from USEPA MOVES Diesel VOC2 Profile for 1,3 -Butadiene, Acetaldehyde, Acrolein, diesel -fueled vehicles7 Post-2007 Model Years Benzene, Ethyl Benzene, Formaldehyde, Naphthalenes, POMS PM2.s running exhaust emissions from USEPA MOVES Diesel PM2.5 Profile for Naphthalene 8, POMB diesel -fueled vehicles' Post -2007 Model Years3 Notes: 1 CARB. 2013. Organic Gas Speciation Profiles for Catalyzed Gasoline -Powered Vehicle Stabilized Running Exhaust - E6 Fuel (OG2303 & OG2304). December. Available at: https://ww3.arb.ca.gov/ei/speciate/profilereference/cate6running_og2303&04.pdf. Accessed: September 2019. 2 Per EMFAC2017 User's Guide v1.0.1, The EMFAC2017 ROG class is the same as EPA's VOC definition. Available at: https://ww3.arb.ca.gov/msei/downloads/emfac20l7_users_guide_final.pdf. Accessed: September 2019. 3 USEPA. 2016. Air Toxic Emissions from On -Road Vehicles in MOVES2014. November. Available at: https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=PlOOPUNO.pdf. Accessed: September 2019. 4 CARB. 2013. Organic Gas Speciation Profiles for Catalyzed Gasoline -Powered Vehicle Start Exhaust - E6 Fuel (OG2301 & OG2302). October. Available at: https://ww3.arb.ca.gov/ei/speciate/profilereference/cate6start_og2301&02.pdf. Accessed: September 2019. 5 CARB. 2015. Organic Gas Speciation Profile for Gasoline -Powered Vehicles Hot Soak Evaporations - E10 Summer Fuel (OG2315). January. Available at: https://ww3.arb.ca.gov/ei/speciate/profilereference/elOshotsoak-og2315.pdf. Accessed: September 2019. 6 Diesel particulate matter was used as a surrogate for estimating cancer risk and chronic health impacts of diesel vehicle exhaust. Speciated diesel exhaust emissions were used only for estimating acute health impacts of diesel vehicle exhaust. 8 Naphthalene and POM have only cancer and chronic impacts. Since DPM was used as a surrogate for estimating cancer and chronic impacts of diesel vehicle exhaust, naphthalene and POM emissions from diesel -fueled vehicles were not used to estimate health impacts in this health risk assessment. Abbreviations: CARB - California Air Resources Board CNG - Compressed Natural Gas COPC - chemicals of potential concern MOVES - Motor Vehicle Emissions Stimulator PM2.5 - particulate matter less than 2.5 microns in diameter POM - polycyclic organic matter ROG - Reactive Organic Gases TOG - Total Organic Gases USEPA - United States Environmental Protection Agency VOC - Volatile Organic Gases Page 1 pf 1 Ramboll Table 2. Health Risk Assessment Options Used in HARP2 ADMRT Tool Tustin Ranch Costco Fuel Station Orange County, California HARP2 Options Chosen Residential Cancer Residential Chronic Worker Cancer Worker Chronic Risk Analyses Screen/ Option Title Risk Run Risk Run Risk Run Risk Run Acute Risk Run Analysis Type Cancer Risk Chronic Risk Cancer Risk Chronic Risk Acute Risk (Non -cancer) (Non -cancer) (Non -cancer) Select Risk Receptor Type Individual Resident Worker N/A Scenario Exposure Duration 30 -Year N/A 25 -Year N/A N/A Intake Rate RMP using the Derived OEHHA Derived Method OEHHA Derived Method N/A Percentile Method Select "User Defined" pathways and choose: inhalation, soil ingestion, dermal, mother's milk, and Tab "Pathways to homegrown produce Select "Worker Pathways" Default Inhalation Only Select deposition rate of 0.02 m/s Select deposition rate of 0.02 m/s Evaluate" Pathway Select Check box "Apply the default fraction of time spent Pathways to at home (FAH) to ages greater than or equal to 16 Check box "Use Adjustment Factors" with WAF = Evaluate Tab "Inh" years" 1.52 Use Defaults (No Change) Tab "Soil" Use Defaults (No Change) Use Defaults (No Change) N/A Tab "Derm" Select "Warm" Climate Select "Warm" Climate N/A Tab "MMIk" JUse Defaults (No Change) N/A N/A N/A Tab "HG Produce" JUse Defaults (No Change) N/A N/A N/A Notes: 1 HARP2 options based on SCAQMD's default assumptions for HRAs. Available at: http://www.agmd.gov/docs/default-source/planning/risk-assessment/ab-2588- supplemental-guidelines-201809.pdf?sfvrsn=6. Accessed: September 2019. z Annual concentration adjustment factor for worker is set based on a schedule of 5:30 AM to 9:30 PM, 7 days a week. Abbreviations: ADMRT - Air Dispersion Modeling and Risk Tool EIR - environmental impact report HARP - Hotspots Analysis and Reporting Program HRA - health risk assessment m - mile N/A - not applicable OEHHA - Office of Environmental Health Hazard Assessment RMP - Risk Management Policy s -second SCAQMD - South Coast Air Quality Management District Page 1 of I Ramboll Table 3. Health Risk Assessment Results Tustin Ranch Costco Fuel Station Orange County, California Notes ' SCAQMD Air Quality Significance Thresholds. Available at: http://www.agmd.gov/docs/default-source/ceqa/handbook/scaqmd-air-quality- significance-thresholds.pdf. Accessed: September 2019. Abbreviations: ADMRT - Air Dispersion Modeling and Risk Tool HARP - Hotspots Analysis and Reporting Program SCAQMD - South Coast Air Quality Management District Page 1 of 1 Ramboll Maximum Maximum Maximum Estimated Estimated Estimated Cancer Risk Chronic Hazard Acute Hazard Receptor Type (in a million) Index Index Residential 4.18 0.0139 0.0293 Sensitive 0.21 0.0007 0.0056 Worker 2.19 0.0645 0.2030 SCAQMD 10 1 1 Threshold' Notes ' SCAQMD Air Quality Significance Thresholds. Available at: http://www.agmd.gov/docs/default-source/ceqa/handbook/scaqmd-air-quality- significance-thresholds.pdf. Accessed: September 2019. Abbreviations: ADMRT - Air Dispersion Modeling and Risk Tool HARP - Hotspots Analysis and Reporting Program SCAQMD - South Coast Air Quality Management District Page 1 of 1 Ramboll FIGURES 4 A LDV_03, LDV _02, HDV 03 IiDV_02_ A? if1Vti13 �LFDV_11, LDV HDV 11 LDV 01, /t HDV__01 LDV -10 LDV IV_0�3 , 4 LDV_08 F . . LDV_0ti LDV_05- ''`I Legend - — — LOADING, BREATH, REFILL, and Notes: SPILL 1. Line (area) sources LDV _01 through LDV _13 represent on-site and off-site passenger vehicle travel. 2. Line (area) sources HDV_01 through HDV_03 and HDV 11 represent on-site and off-site fuel delivery truck travel. 0.25 -mile Buffer from Fueling 3. Areapoly sources IDLING01 and IDLING02 represent on-site passenger vehicle and fuel delivery truck idling. Station Boundary 4. Point sources (LOADING and BREATH) represent the gasoline storage tank and transfer emissions. 0 750 IDLING01, IDLING02 5. Volume sources {R FILL and SPILL) represent gasoline dispensing emissions. The centroid of the volume sources is shown in this rigij a.. '.r IN ��ET Ir r I I Modeled Source Locations FIGURE 1 DRAFTED BY: R. Case I DATE: 10/3/2019 PROJECT: 1690003739 Legend 17 John Wayne International Airport Irl Meteorological Station .. Gasoline Dispensing Facility 2l a R utm 1. � � �• �-- '� f� SCALA f►, M1� � 4 Meteorological Station Location FIGURE DRAFTED BY: R. Case DATE: 9/16/2019 PROJECT. 1G_00037'- Legend 0.25 -mile Buffer from Modeled Project Sources Receptor Type • Residential Sensitive o Worker BY: R. Case I DATE: 9/16/2019 0000. . 000e•o•••.•• . . . . . • •0000••••••••. e.0o0000.••.... ••..00000........ • • • ooe•oo0000.••.•••••• . . ••••• • ...•••••00000••••••..• ......... .0•..0...0 000•....• ... ..........• 0•..000.•• o0 000 ...................... ••••••••e 000000000.........••0•••••••••. •0.•.00.0. 000000 000••••••••••••••...••• •••.•o0oeo 00000000 000••.•.e ............. eoee..00eo 00 0000000 000.ee••.••.•••••••••• . e •.•.•••••• 0000 0000000 000...0..0•. •....... O e•eo•••oo0 00000000000000 000..•...0......... 0.......o. 0000000000 000 000 ...... ........ 00.00.••00 000 000000 O 00•••••.•.•••••• 0 ••oo•0e•eoo 00000 00000 00••. •......• • 0 0 •.•.•.•.0. 0000000 000 0.. •..•.•••• •0000.0000 000000000 0 0 0 00000.0000 .e.....•.. 00000000000 0000•...•...••• • ••••••.•• 00000000000000 00000 •.•..•.•.•.• • o 0 ••000.••. 00000000cc c oo0 000 000 •...e••.•.•. 0000000.• 00000000000000000 000 00000 ••.•••••.••• 0000000. 0000000000000000000 000 0000000 0•••.•••...• 00000000 000000000000000000000 000 000000000 •••••.•.•••. 0 0 0000oo00000000000 00000000000 00 000000000000•....•....• 0000000000000000 000000000000000000000000000 ••...••.• 000000000000000 oo0000000000000000000000000 ••••••••o O 000000000000000 O 000000000000000000000000000 ••..•..O e O 0000000000000 00000000000 0000000000000000.....00 00000000000 00000000000 0000000000000000•••00 0000000 0000000000000000000000000000000 8 O O o 0 0 0 000000000 00000000000000000000 0 O 0000000000000000000000000000 000000000 00000000000000000 0000000000000000000000000 O O O O O O O O 0000000000000000000000 O O O 00000000 000000000 000000000000000000000000 O o 00000000 000 O O0 0000000 0000000000000000 y 0000000000000000 00000o000000000 0 0 000000000000000 0 0 0000000o0000o 00000000000 0000000 o ,-. 0 0 0 0 , oon 0 0 0 0 0 Modeled Receptor Locations o R,000 Feet FIGURE 3 1690003739 APPENDIX A EMISSION CALCULATIONS Table A-1. Traffic Volumes and Vehicle Miles Traveled on Modeled Roadways Tustin Ranch Costco Fuel Station Orange County, California Modeled RoadwayLinks' Source Grou ID Intemal' Peak Hour Trip Rates' (one-way tris hour External Primary Diverted Pass -by' Total' Tustin Ranch Rd. (s/o EI Camino Real) HDV 01 0 2 0 0 2 Tustin Ranch Rd. (btwn. Bryan Ave. and EI Camino Real) HDV 02 0 2 0 0 2 Fuel Delivery Bryan Ave. btwn. Tustin Ranch Rd. and Market St. HDV 03 0 2 0 0 2 Market St. Project Driveway) HDV 11 0 2 0 0 2 Trucks On -Site Idling IDLING02 0 2 0 0 2 Tustin Ranch Rd. (s/o EI Camino Real LDV 01 0 16 26 0 42 Tustin Ranch Rd. btwn. Bryan Ave. and EI Camino Real LDV 02 0 3 4 0 7 Bryan Ave. btwn. Tustin Ranch Rd. and Market St. LDV 03 0 23 38 0 61 Bryan Ave. btwn. Market St. and M ford Rd. LDV 04 0 30 51 0 81 Bryan Ave. (e/o M ford Rd. LDV 05 0 29 49 0 77 M ford Rd. Wo Bryan Ave. LDV 06 0 2 3 0 4 M ford Rd. btwn. Bryan Ave. and EI Camino Real LDV 07 0 0.2 0.4 0 0.6 Passenger Cars EI Camino Real (e/o M ford Rd. LDV O8 0 22 37 0 58 EI Camino Real btwn. Auto Center Dr. and M ford Rd. LDV 09 0 22 37 0 59 EI Camino Real (btwn. Tustin Ranch Rd. and Auto Center Dr.) LDV 10 0 24 41 0 65 Market St. Prosect Driveway) LDV 11 0 5389 82 k1108 224 Auto Center Dr. Project Drivewa LDV 12 0 49 82 75 206 Entry from Tustin Ranch Road Project Driveway) LDV13 0 6 B 7 21 On -Site Idling,Starting,and Evaporative IDLING01 266 179 164 1719 Page 1 of 2 Ramboll Table A-1. Traffic Volumes and Vehicle Miles Traveled on Modeled Roadways Tustin Ranch Costco Fuel Station Orange County, California Modeled Roadwa Links' Source Grou ID Internals Annual Trip (one-way trips/year) External Prima DivertedF185,234 Rates' Total' Segment g Length' miles Peak Hour VMT' (miles/ hour Annual VMT' (miles/ earTustin Ranch Rd. (s/o EI Camino Real) HDV 01 0 5 840 05 840 0.22 0.44 1 295 Tustin Ranch Rd. (btwn. Bryan Ave. and EI Camino Real) HDV 02 0 5 840 05 840 0.15 0.30 887 B an Ave. btwn. Tustin Ranch Rd. and Market St. HDV 03 0 5 840 05 840 0.13 0.27 787 Fuel Delivery Market St. Pro ect Drivewa HDV 11 0 5 840 05 840 0.18 0.36 1 046 Trucks On -Site Idlin IDLING02 0 5 840 05 840Tustin Ranch Rd. s o EI Camino Real LDV 01 0 70 553 114 681 0.22 9.32 41,090 Tustin Ranch Rd. btwn. Bryan Ave. and EI Camino Real LDV 02 0 12,202 19,661 0 31,863 0.15 1.06 4,837 Bryan Ave. btwn. Tustin Ranch Rd. and Market St. LDV 03 0 120,613 196.141 0 316,754 0.13 8.22 42,671 Bryan Ave. btwn. Market St. and M ford Rd. LDV 04 0 133 076 215 959 0 349 035 0.19 15.26 65,758 Bryan Ave. (e/o M ford Rd. LDV 05 0 126,964 206,042 0 333,G06 0.22 16.97 73,146 M ford Rd. (r/o B an Ave. LDV 06 0 7,196 11,679 0 18,874 0.14 0.59 2,174 M ford Rd. btwn. Bryan Ave. and EI Camino Real LDV 07 0 1,084 1,761 0 2,845 0.15 0.09 435 Passenger Cars" EI Camino Real (e/o M ford Rd. LDV 08 0 107,327 174,354 0 281,681 0.25 14.34 69,171 EI Camino Real btwn. Auto Center Dr. and M ford Rd. LDV 09 0 106,411 176,115 0 284,526 0.10 6.07 29,277 EI Camino Real (btwn. Tustin Ranch Rd. and Auto Center Dr.) LDV 10 0 109,871 178,827 0 288,698 0.22 14.14 62,822 Market St. Pri Driveway) LDV 11 0 253,689 412 100 403 780 1,069,569 0.18 40.13 191,604 Auto Center Dr. Project Driveway)LDV 12 0 229,285 372 517 364 664 966,466 0.05 9.33 43,779 Entry from Tustin Ranch Road Project Driveway) LDV 13 0 23,778 38 227 37 760 99,765 0.23 4.78 22,701 On -Site Idling, Starting, and Evaporative IDLING01 1,166,305 506 752 822,844 806,204 3,302,105 Niel See Figure 1 for a graphic representation of the modeled sources. ' Trip rates based Pro3ect-specific data and peak hour trip rates prepared by traffic counts collected by Kittelson & Associates and data provided in the Tustin Ranch Costco Fuel Station Additional Memorandum dated April 17, 2019. Fuel deliver truck trip rates assume one truck per hour and eight trucks per day. ' Segment length based on modeled source length in AERMOD. ° VMT Is calculated as the product of the segment length and the total number of trips in the respective averaging period ' Internal trips include trips made by patrons visiting the Costco member warehouse. Project -related emissions from internal trips are assumed to be from idling only. 6 Pass -by trips include vehicles already on the roadway that make an additional stop at the fuel station while on their current route. Project -related emissions from pass -by trips are assumed to occur on the project driveway road segments and during idling. ' Total trips are the sum of all internal and external trips for each modeled source. e Passenger cars represent vehicles used by patrons of the fuel station. Abbreviation,: Ave- avenue Rd - road btwn - between s/o - south of CaIEEMod' - CALifornia Emissions Estimator MODel St - street e/o - east of VMT - vehicle miles traveled n/o - north of Page 2 of 2 Ramboll Table A-2. Operational Mobile Source Fleet Mixes Tustin Ranch Costco Fuel Station Orange County, California LDA LDTI LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS MCY SBUS MH CalEEMode Defaults 1 55.6% 4.4% 21.01% 11.6% 1.7% 0.6% 2.5% 1.6% 0.2% 0.2% 0.5% 0.1% 0.1% LDA LDTI LDT2 MDV Passenger Vehicless 60.0% 4.7% 22.7% Notes• 1 CaIEEMod® default for Gasoline Service Station land use subtype in Orange County - South Coast. z Passenger cars represent vehicles used by patrons of the fuel station. Fleet mix for passenger vehicles are estimated based on the ratio of the vehicle classes in CaIEEMod® default Fleet mix. Abbreviations: CaIEEMod® - CALifornia Emissions Estimator MODel LDA - Light Duty Automobile LDT - Light -Duty Truck LHD - Light -Heavy Duty truck HHDT - Heavy -Heavy Duty truck MDV - Medium -Duty Vehicle MH - Motor Home MHD - Medium -Heavy Duty truck OBUS - Other Buses UBUS - Urban Buses MCY - Motorcycle SBUS - School Bus Page 1 of 1 Ramboll Table A-3. Reactive Organic Gas Emission Factors Tustin Ranch Costco Fuel Station Orange County, California EMFAC Vehicle Class EMFAC VMT Output' (miles/day) EMFAC Vehicle Trips Output' (trips/day) MDV - medium -duty vehicle LDA - Light Duty Automobile ROG Emission Factor LDT - Light -Duty Truck ROG - reactive organic gases Off-site Running Exhaust= (g/mile) On-site Running Exhaust; (g/mile) Running Loss4,5 (g/mile) Hot Soak" (g/trip) Starting Exhausts' (g/trip) Idle Exhaust° (g/idle- minute) Passenger Vehicles° LDA 48,945,590 5,912,595 0.012 0.073 0.027 0.088 0.026 0.003 LDT1 5,047,196 619,699 0.031 0.172 0.088 0.173 0.041 0.007 LDT2 17,039,204 2,097,730 0.018 0.107 0.050 0.107 0.037 0.004 MDV 11,413,222 1,449,102 0.029 0.161 0.056 0.121 0.049 0.007 Weighted Emission Factor'o 0.017 0.096 0.039 0.100 0.032 0.004 Fuel Delivery Trucks9 HHDT 1,179,820 102,871 0.137 1.297 0.040 Notes: ' Data obtained from EMFAC2017 output for default emissions activity. 2 Off-site running exhaust emission factor is based on EMFAC2017 default activity output for aggregated speeds. 3 On-site running exhaust emission factor is based on EMFAC2017 project -level emission rate output for a speed of 5 mph. 4 Running loss emission factor is based on EMFAC2017 output for default emissions activity. 5 Running loss, hot soak, and starting exhaust emissions for HHDT are zero, as reported by EMFAC2017. 6 Hot soak emission factor is based on EMFAC2017 project -level emission rate output. ' Passenger vehicles will turn off their engines for approximately 4 minutes while fueling on-site. Hence, on-site starting exhaust emission factors for these vehicles were obtained from EMFAC2017 project -level output for starting exhaust with a 5 -minute soak time. 8 Passenger vehicle idle exhaust emission factors are equivalent to the EMFAC2017 project -level running exhaust emission rate in grams per mile at 5 mph, multiplied by the speed correction factor of 2.5 mph. ' Passenger vehicles are assumed to be gasoline -fueled. Fuel delivery trucks are assumed to be diesel -fueled. 10 Emission factors for EMFAC vehicle classes are weighted based on the project -specific Fleet mix in Table A-2 to estimate emission factors for passenger vehicles. Abbreviations: EMFAC - EMission FACtors model MDV - medium -duty vehicle LDA - Light Duty Automobile mph - miles per hour LDT - Light -Duty Truck ROG - reactive organic gases HHDT - Heavy -Heavy Duty truck VMT - vehicle miles travelled Conversion Factors 60 minutes per hour 907184.7 g per ton Page 1 of 1 Ramboll Table A-4. PM2.s Emission Factors Tustin Ranch Costco Fuel Station Orange County, California EMFAC Vehicle Class EMFAC VMT Output' (miles/day) EMFAC Vehicle Trips Output' (trips/day) PMZ.5 Emission Factor Off-site Running Exhaust2 (g/mile) On-site Running Exhausts (g/mile) Starting Exhaust' (g/trip) Idle Exhausts (g/idle- minute) Passenger Vehicles LDA 48,945,590 5,912,595 0.002 0.0099 0.0002 0.0004 LDT1 5,047,196 619,699 0.002 0.0135 0.0002 0.0006 LDT2 17,039,204 2,097,730 0.002 0.0097 0.0001 0.0004 MDV 11,413,222 1,449,102 0.002 0.0101 0.0002 0.0004 Weighted Average Emission Factor' 0.002 0.010 0.0002 0.0004 Fuel Delivery Trucks HHDT 1 1,179,820 1 102,871 0.060 1 0.135 0.001 Notes: ' Data obtained from EMFAC2017 output for default emissions activity. 2 Off-site running exhaust emission factor is based on EMFAC2017 default activity output for aggregated speeds. 3 On-site running exhaust emission factor is based on EMFAC2017 project -level emission rate output for a speed of 5 mph. Passenger vehicles will turn off their engines for approximately 4 minutes while fueling on-site. Hence, on-site starting exhaust emission factors for these vehicles were obtained from EMFAC2017 project -level output for starting exhaust with a 5 -minute soak time. Starting exhaust emissions for HHDT are zero, as reported by EMFAC2017. 5 Passenger vehicle idle exhaust emission factors are equivalent to the EMFAC2017 project -level running exhaust emission rate in grams per mile at 5 mph, multiplied by the speed correction factor of 2.5 mph. 6 Passenger vehicles are assumed to be gasoline -fueled. Fuel delivery trucks are assumed to be diesel -fueled. ' Emission factors for EMFAC vehicle classes are weighted based on the project -specific Fleet mix in Table A-2 to estimate emission factors for passenger vehicles. Abbreviations: EMFAC - EMission FACtors model LDA - Light Duty Automobile LDT - Light -Duty Truck HHDT - Heavy -Heavy Duty truck Conversion Factors 60 minutes per hour 907184.74 g per ton MDV - medium -duty vehicle mph - miles per hour PM2.5 - particulate matter less than 2.5 microns in diameter VMT - vehicle miles travelled Page 1 of 1 Ramboll Table A-5. Diesel Particulate Matter Emission Factors Tustin Ranch Costco Fuel Station Orange County, California EMFAC Vehicle Class EMFAC VMT Output' miles/da DPM Emission Factor Off-site Running Exhaust3 mile On-site Running Exhaust4 mile Idle Exhaust idle -minute Fuel Delivery Trucks6 HHDT 1,179,820 0.06 1 0.14 0.00053 Notes: 1 Data obtained from EMFAC2017 output for HHDT diesel vehicle default emissions activity. 2 For purposes of this analysis, DPM emissions are assumed to be equal to PM10 exhaust emissions from diesel vehicles. 3 Off-site running exhaust emission factor is based on EMFAC2017 default activity output for aggregated speeds. 4 On-site running exhaust emission factor is based on EMFAC2017 project -level emission rate output for a speed of 5 mph. Abbreviations: DPM - diesel particulate matter EMFAC - EMission FACtors model HHDT - Heavy -Heavy Duty truck Conversion Factors: 60 minutes per hour 907184.74 g per ton mph - miles per hour PM10 - particulate matter less than 10 microns in diameter VMT - vehicle miles travelled Page 1 of 1 Rambolll Table A-6. Passenger Vehicle Emissions Tustin Ranch Costco Fuel Station Orange County, California Source Group ID' Modeled RoadwayLink Project VMT' miles Peak Hour Annual Project Trlps' one -.a tris Peak Hour Annual Idle Duration (minutes/ round tri ROG Starting Exhaust Emissions' Peak Hour Annual Ib hr Ib ear ROG Running and Idling Exhaust Emissions' Peak Hour Annual Ib hr Ib ear ROG Evaporative Emissions' Peak Hour Annual Ib hr Ib ear LDV O1 Tustin Ranch Rd. (s/o EI Camino Real 9.32 41,090 42 185,234 0 0 3.42E-04 1.51E+00 7.92E-04 3.50E+00 LDV 02 Tustin Ranch Rd. blw. . B an Ave. and EI Camino Real 1.06 4,837 7 31,863 0 0 3.91E-05 1.78E-01 9.04E-05 4.11E-01 LDV 03 Bryan Ave. btwn. Tustin Ranch Rd. and Market St. 8.22 42,671 61 316,754 0 0 3.02E-04 1.57E+00 6.99E-04 3.63E+00 LDV 04 Bryan Ave. btwn. Market St. and M ford Rd. 15.26 65,758 81 349,035 0 0 5.61E-04 2.42E+00 1.30E-03 5.59E+00 LDV 05a an Ave. e/o M ford Rd. 16.97 73,146 77 333,006 0 0 6.24E-04 2.69E+00 1.44E-03 6.22E+00 LDV 06 M ford Rd. n o B an Ave. 0.59 2,574 4 18,874 0 0 2.18E-05 9.46E-02 5.04E-05 2.19E-01 LDV 07 MrdRd. btwn. B an Ave. and EI Camino Real 0.09 435 1 2,845 0 0 3.32E-06 1.60E-02 7.68E-06 3.70E-02 LDV 08 EI Camino Real e o M ford Rd. 14.34 69,171 58 281,681 0 0 5.27E-04 2.54E+00 1.22E-03 5.88E+00 LDV 09 EI Camino Real btwn. Auto Center Dr. and M ford Rd. 6.07 1 29,277 59 284 526 0 0 2.23E-04 1.08E+00 5.16E-04 2.49E+00 LDV 10 EI Camino Real b[wn. Tustin Ranch Rd. and Au[o Cen[er Dr. 14.14 62 822 65 288 698 0 0 5.20E-04 2.31E+00 1.20E-03 5.34E+00 LDV 11 Marke[ St. Proect Drivewa 40.13 91,604 224 1,069,569 0 0 8.54E-03 4.08E+01 3.41E-03 1.63E+01 LDV 12 Auto Center Dr. Project Driveway) 9.33 1 43,779 206 966,466 0 0 1.98E-03 9.31E+00 7.94E-04 3.72E+00 LDV 13 Ent from Tus[in Ranch Road Proect Drivewa 4.76 22 701 21 99 765 0 0 1.02E-03 4.83E+00 4.06E-04 1.93E+00 IDLING01 On -Site Idlin Startin and Eva ora[ive' 719 3 302 105 12 2.53E-02 1.16E+02 3.82E-02 1.76E+02 7.94E-02 3.65E+02 Page I of 2 Ramboll Table A-6. Passenger Vehicle Emissions Tustin Ranch Costco Fuel Station Orange County, California Source Group ID' Modeled RoadwayLink Project VMT' miles(one-way Peak Hour Annual Project Trips' tris Peak Hour Annual Idle Duration (minutes/ round tri PMI, Running and Idling Exhaust Emissions Peak Hour Annual Ib hr Ib ear PM- Starting Exhaust Emissions - Peak Hour Annual Ib hr Ib ear LDV O1 Tustin Ranch Rd. (s/o EI Camino Real 9.32 41,090 42 185,234 3.33E-05 1.47E-01 0 0 LDV 02 Tustin Ranch Rd. btwn. Bryan Ave. and EI Camino Real 1.06 4,837 7 31.863. 3.80E-06 1.73E-02 0 0 LDV 03 111— Ave. btwn. Tustin Ranch Rd. and Market St. 8.22 42,671 61 316,754 2.94E-05 1.52E-01 0 0 LDV 04 Bryan Ave. btwn. Market St. and M ford Rd. 15.26 65,758 81 349,035 5.45E -OS 2.35E-01 0 0 LDV 05 Bryan Ave. (e/o M ford Rd. 16.97 73,146 77 333,006 6.06E-05 2.61E-01 0 0 LDV 06 M ford Rd. (r/o Bryan Ave. 0.59 2,574 4 18,874 2.12E-06 9.20E-03 0 0 LDV 07 M ford Rd. btwn. B an Ave. and EI Camino Real 0.09 435 1 2,845 3.23E-07 1.56E-03 0 0 LDV OB EI Camino Real (e/o M ford Rd. 14.34 69,171 58 281,681 5.12E-05 2.47E-01 0 0 LDV 09 EI Camino Real btwn. Auto Center Dr. and M ford Rd. 6.07 29,277 59 284,526 2.17E-05 1.05E-01 0 0 LDV 10 EI Camino Real btwn. Tustin Ranch Rd. and Auto Center Dr. 14.14 62,822 65 288,698 5.05E-05 2.24E-01 0 0 LDV 11 Market St. Project Driveway)40.13 191,604 224 1,069,569 8.89E-04 4.24E+00 0 0 LDV 12 Auto Center Dr. Project Driveway)9.33 43,779 206 966,4661 2.07E-04 9.70E-01 0 0 LDV 13 Ent from Tustin Ranch Road Project Drivewa 4.78 22 701 21 99 765 1.06E-04 5.03E-01 0 0 IDLING01 On -Site Ichn Starting, and Evaporative' 719 3,302,1051 12 3.98E-03 1.83E+01 1.27E-04 5.85E-01 Notes: See Figure 1 for a graphic representation of the modeled sources. ' Data obtained from Table A-1. ' ROG emissions calculated using emission factors from Table A-3 along with Project VMT trips. Evaporative emissions Include running loss and hotsoak emissions. ' PM2, emissions calculated using emission factors from Table A-4 along with Project VMT and trips. ' Includes emissions from on-site vehicle idling, on-site starts, and hotsoak emission estimated using the number of round trips (i.e., half of the one-way trips). Abbreviations: Ave -avenue ROG - reactive organic gases btwn - between s/o - south of e/o - east of St - street n/o - north of VMT - vehicle miles traveled Rd - road CalEEMod* - CALifornia Emissions Estimator MODel PM, s - particulate matter less than 2.5 microns in diameter Conversion Factor: 453.592 g/Ib Page 2 of 2 Ramboll Table A-7. Fuel Delivery Truck Emissions Tustin Ranch Costco Fuel Station Orange County, California Notes: ' See Figure 1 for a graphic representation of the modeled sources. ' Data obtained from Table A-1. ' DPM emissions calculated using emission factors from Table A-5 along with Project VMT and trips. " ROG emissions calculated using emission factors from Table A-3 along with Project VMT and trips. ' PMz 6 emissions calculated using emission factors from Table A-4 along with Project VMT and trips. 6 Includes emissions from on-site vehicle idling that is estimated using the number of round trips (i.e. half of the one-way trips). Abbreviations: Ave- avenue PM2,6 - particulate matter less than 2.5 microns in diameter btwn - between Rd - road CalEEMod* - CALifornia Emissions Estimator MODel ROG - reactive organic gases DPM - diesel particulate matter s/o - south of e/o - east of St - street n/o - north of VMT - vehicle miles traveled Conversion Factor: 453.592 g/Ib Page 1 of 1 Ramboll Project VMTz Project Trips' DPM Exhaust miles(one-way trips) Emissions' ROG Exhaust Emissions' PM Exhaust Emissions` Idle Duration Source Group Modeled Roadway (minutes/ Annual Peak Hour Annual Peak Hour Annual ID' Link Peak Hour Annual Peak Hour Annual round tri Ib ear Ib hr Ib ear Ib hr Ib ear Tustin Ranch Rd. (s/o EI HDV 01 Camino Real) 0.44 1,295 2 5,840 1.79E-01 1.34E-04 3.91E-01 5.85E-05 1.71E-01 Tustin Ranch Rd. (btwn. HDV 02 Bryan Ave. and EI Camino Real) 0.30 887 2 5,840 1.22E-01 9.17E-05 2.68E-01 4.00E-05 1.17E-01 Bryan Ave. (btwn. Tustin HDV -03 Ranch Rd. and Market St.) 0.27 787 2 5,840 1.08E-01 8.14E-05 2.38E-01 3.55E-05 1.04E-01 Market St. (Project HDV 11 — Driveway) 0.36 1,046 2 5,840 3.26E-01 1.02E-03 2.99E+001.07E-04 3.12E-01 IDLING02 On -Site Idling' 2 5,840 5 1.71E-02 4.43E-04 1.29E+00 5.62E-06 1.64E-02 Notes: ' See Figure 1 for a graphic representation of the modeled sources. ' Data obtained from Table A-1. ' DPM emissions calculated using emission factors from Table A-5 along with Project VMT and trips. " ROG emissions calculated using emission factors from Table A-3 along with Project VMT and trips. ' PMz 6 emissions calculated using emission factors from Table A-4 along with Project VMT and trips. 6 Includes emissions from on-site vehicle idling that is estimated using the number of round trips (i.e. half of the one-way trips). Abbreviations: Ave- avenue PM2,6 - particulate matter less than 2.5 microns in diameter btwn - between Rd - road CalEEMod* - CALifornia Emissions Estimator MODel ROG - reactive organic gases DPM - diesel particulate matter s/o - south of e/o - east of St - street n/o - north of VMT - vehicle miles traveled Conversion Factor: 453.592 g/Ib Page 1 of 1 Ramboll Table A-8. Speciation Profiles Used to Calculate Mobile Source Air Toxic (MSAT) Emissions Tustin Ranch Costco Fuel Station Orange County, California Chemical Name CAS Number Gasoline -Fueled Passen er Vehicles Diesel -Fueled Fuel Deliv ry Trucks ROG Weight Fraction PM2.5 Weight Fraction ROG Weight PM2.5 Weight Fraction Fraction Running Running and and Starting Idling Starting Idling Exhaust' Exhaust2 Eva orative3 Exhaust° Exhaust° Running and Idling Exhausts Running and Idling Exhausts 1,3 -butadiene 106990 6.48E-03 1.66E-03 8.00E-04 benzene 71432 2.59E-02 2.67E-02 1.17E-02 1.29E-02 formaldehyde 50000 1.62E-02 1.47E-02 2.17E-01 acrolein (2-propenal) 107028 6.33E-05 3.33E-05 9.99E-03 naphthalene 91203 2.07E-03 2.53E-03 7.16E-05 7.19E-05 1.63E-02 acetaldehyde 75070 1.12E-02 9.82E-03 6.93E-02 ethyl benzene 100414 1.29E-02 7.67E-03 7.55E-03 6.30E-03 POM (15 Pollutants) Acenaphthene 83329 3.99E-05 3.99E-05 5.26E-05 Acenaphthylene 208968 1.81E-04 1.81E-04 2.14E-05 2.13E-05 8.53E-05 Anthracene 120127 3.35E-05 3.35E-05 2.21E-05 2.21E-05 3.04E-05 2.66E-05 Benz(a)anthracene 56553 5.40E-06 5.40E-06 2.03E-04 2.03E-04 3.00E-07 7.99E-07 Benzo(a)pyrene 50328 2.94E-07 2.94E-07 5.07E-04 5.09E-04 3.30E-06 Benzo(b)fluoranthene 205992 4.01E-06 4.01E-06 2.48E-04 2.48E-04 1.40E-06 Benzo(g,h,i)perylene 191242 1.38E-03 1.38E-03 2.00E-07 2.00E-07 Benzo(k)fluoranthene 207089 4.01E-06 4.01E-06 2.48E-04 2.48E-04 1.40E-06 Chrysene 218019 6.05E-06 6.05E-06 1.71E-04 1.72E-04 5.00E-07 2.50E-06 Dibenz(a,h)anthracene 53703 1.19E-05 1.19E-05 1.00E-06 Fluoranthene 206440 5.60E-05 5.60E-05 7.80E-05 7.80E-05 4.57E-05 4.87E-05 Fluorene 86737 8.08E-05 8.08E-05 1.96E-04 5.38E-05 Indeno(1,2,3-c,d)pyrene 193395 5.16E-04 5.17E-04 5.00E-07 Phenanthrene 85018 2.14E-04 2.14E-04 7.72E-05 7.74E-05 8.51E-04 4.29E-04 Pyrene 129000 6.40E-05 6.40E-05 8.44E-05 8.47E-05 3.79E-05 4.67E-05 Notes: 1 The ROG starting exhaust speciation profile for gasoline vehicles represents the maximum of CARB profiles OG2301 and OG2302 and EPA MOVES profiles. See Table 1 for further details. 2 The ROG running and idling exhaust speciation profile for gasoline vehicles represents the maximum of CARB profiles OG2303 and OG2304 and EPA MOVES profiles. See Table 1 for further details. 3 The ROG evaporative speciation profile for gasoline vehicles represents CARB profile OG2315. See Table 1 for further details. ° The PM2.5 starting, running, and idling exhaust speciation profiles for gasoline vehicles represent EPA MOVES profiles. See Table 1 for further details. 5 The ROG and PM2.5 running and idling exhaust speciation profiles for diesel vehicles represents the EPA MOVES profiles for post -2007 model year vehicles. See Table 1 for further details. Abbreviations: CAS - Chemical Abstract Service EPA - Environmental Projection Agency PM2.5 - particulate matter less than 2.5 microns in diameter POM - polycyclic organic matter ROG - reactive organic gases Page 1 of 1 Ramboll Table A-9. Peak Mo— Speciated MSAT Emissions for Passenger Vehicles Tustin Ranch COSiO Fuel Station Orange County, California ROG Starting Fxhaust ROG Running and Idling Fxhaust Table A-9. Peak No- Speciated MAT Emissions for Passenger Vehicles Tustin Ranch Costco Fuel Station Orange County, California Q� Table A-9. Peak Hour Speciated MAT Emissions for Passenger Vehicles Tustin Ranch Costco Fuel Station Orange County, California I'a'=� Spenated emissions are [,Ic,lat,d using the speciation profiles in Table A -e and the --a pollutant emissions h Table A-6. PM_ part mlate matter less than 2.5 microns m diameter ROG - —d., organic gases Table A-10. 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R713i�lR1T�T■ a� !ASl�17 Wit■ ■RCl�S! �ST3rL! � �■ «il�t■ 1173:17 � � X17 iRf 13t■!!1!I�L■ � �1• ■� E1�S! �l1ti}�t71RlI�L7 �17lR�t■!�Slydt�7lRtl�}7lR3T32�7■R►rat■7l313S717E}.7�tl���Sl Table A-10. Annual Average Spectated MSAT Emissions for Passenger Vehicles Tustin Ranch Costco Fuel Station orange County, California ■nza�Erpr.mRSR�■ �RSRS�■fSRf■IT�SIRSZT� �RSRRf ��R�iTl �RT4!t�S� Rf13lTitW—Mr.M t T� TT3lffRf13lTf TT�1}1 T131Tf f � TT }1 � lRS7�S! elSf assri frr ! �!}f�b! f�S13b! �err�t■ i!!}f � X00"" fROMR,I �}T3lf1l�b}�!}f�}f�!}7�T}3!}fRTf3�}�R}13lTfRTf�T��TTilTf�}}�1}ff*f13lffRbT�}fRTT�lTf f *TT3!}f � RTT�lf f l�TT!!Tf �}�lf t RT13lTf RTT3lTf R}T3�bTf RTf�1f f �f }3!}1 f *}.T3�lf f �}TJ!}f l�TT�f f R}T�lTf ff. f }f lff�f}�!ffnR,r r��ff31ffRTT3lTfRfT3lTfRff�lT�fRT}31ff f �}f lffRfT�!}f } 1ff Sf srn lR!! b! rases L�E13t■!!ll�f!�R}T t! mss■OWN More"M. R}13lT� RTT3lTf �f T�!}f �T}�f f nrtr�r� Rf T3lTf Rf f3lbf Rf T3lf f Rf f!!Tf R}.T3bf f �f f�lTf �f }3�Ef �TT�f f ��TT�lf f �ffil� f �}13!}f RTT31Tf RTT!!T�l�TT�1f f R}}�1}f f �}13lTf RTf3lf 1 �TT31Lf Rf f�f f � f �R�l}f R}}�!}7!�}13P.f f Rf T�lf f • R}}3!T* �f 13lL1 RT}�!f f RTT�ld� �}f R}13!}f l�TT3lf f R}}3lTf t*T13lf f � f �f f!!Tf �f }�!}f tRf T3�1T1 nttt�ri .. mm, nrnr��rr�nrtr}�trr��nrinr�nr�rr�rrr�nrrrr�nrnr�n'nr� r.�a• is��r�r�r�n'n�rsn�rr�r�n�rr�r�n�rr�r�em�r�e�rr�r�e�rr��n�n�r��rr�r�n�rr�r�n�rr�r�n�tr�i �8� Rf f�!}�!�}T3�bLf � Rf 13�f.7 �TT�1Tf R}13�Tf l�TTdlTf f *f.T�lTf RTT!lf.� RTT�1}f �T13�Tf �Tf�1}f R}}�1Tf Rf 13lf � �b}S�� Rf }�1}f �f 13lf 1 �f T3�f.1 RT}3�1Tf RTT�lf f �}13!}f �T}�1f f f �f 13lf f f'Rf f3lf f RTf�f 1 R.�T�}f RTT�}f f �T}3!f f f �}136f f �8� RTT�lf � R}T�lTf � f �T13lTf R}4l1f 1 R}}31}f �Tf�f 1 R,T}�1}f l�TT3lTf RTT�1}f �� �TT�lf f �}}�Lf f }T13lTt �� Rf }�f � f R}T3!}f �f T31f f RTT3lTf Rf T�1Tf �T}3�}f RTf�1f f l�TT3lf f �f f3lf f Rf f�f f f �T�Tf Rf T�1Tf �T13!}f f �}T3lf f �� �TT�1}f !�}T�1}f RTT3lf f �TT3lTf R}T�bT1 R}}�lTf �T}3�1}f RT}�1}f l�TT3lTf R}T�1}f f �TT3lT■ �}}3bbf RUf�1bf f R}13!}f f *f T�lT1 R}T3lf f R}13�f f R}T3�1Tf f R}T�lT7 RTf�lf 1 RT}3�}f �}T3�1f 1 R}T�1}t f �T13�f � !�}T�1Tf RbT�1Tf f �f 13lTf ��}}�}�Rff�!}f!�}13�L1R}13lTf R}T�1Tfl�R�lTfRfT3�lftnrt}��RTT�1f1R}T�bT.ff�T13lf�l�}13lLf RT}�1}f�}13�}� �f T�1f f Rf }elf f �TT3lTf �}Td!}f �}T�bbf Rf T�}f Rf f!!Tf R}}3�1f f � f *TT3lT1 �}T�bLf Rf T3�f f RTT�1f f f *}}3SLf }f Rf T�lf 1 f *}13lTf f �}13lT� �}T�bf 1!*f }�!}f � R}1311.f f f RTT3�1Tf R}f�!}� f !�}}3lTf RTT3!}f R}fdSTf Rf f�1f � Rf f�T1l�}}34}f R}T3!}f �}T�1f 1 � f �T13lf t RT}3�}f f �T13!}f �}13lTf �f 13�Tf Rf 13lTt RTT�1}1 R}}�bf � �.• •.. �n�n�r�n�n�r�n�rr��n�rr�r�nrtr�r�,�n�tr�r�nrtr�rin�n�r�n�rr�ri�tr�r�n�n�r�n�rr�r�e�r� ■�� ■�}� �T�L� �� ■irtras� fR�S! �RRl�Sf �L7:13T� � ■�� Wit■ �S}�L� �� ■n�r�, I�n�rr�rin�r+�t�r�n�r�n�n�r�n�rr�r�e�rtr�r�n�rr�,�n�rr�i�n�r�n�n�r.�e�rr�r�n�n�tr��e�n�r� e���}}�}fRf}�1ff�f}3�ff�}13lf� f*f13!}f�ff�1T�R}13P.}1Rff�lffRfl3lf�f�}T�lTfRff�lT7f�d13lff ELia3f.� n�sras� � !#ET�T�l�}:1� s� � l�A3f.� �lRL#�f� e�s� s� lRR�T�l�tf�t■ • e�a�s�rr���n�s��er��e�s��:r�r��s�e�s�i�nr�aa���■err�t�■Rar�t■� '�.•�e�eer�s��}.�ar�s���■�n����}�e�ii�s�e�}i��■e�sr�����e}}a�■e�e�r� ��a• ��t��}:}�}��a�n�sa�e%i�s�ss}}a}�i�nii�i�i�eir��a�i��r�r�s�r��■�s��e�r� �� ■�}� i�if !RlI�T.� L�T}�}.� E�1�lRf �S1 �Ri�3f:7 L'�ST�f� l�13f.�lf�f� e�sa ■Rl��l�L73}� L7f13t■ �_ ■R!l�i� �T.� �RE}�T,f lR:�}�t� �t� e�l�l�Sf lR4T�d� �r� �t� �■ L�S� �d� • n�n�r�nrn�r�n�rr�asn�rr�r�nrrr,�rin�n�r��n�r�n�n�r��rr�r�te�n�r�nrrr�r��r�n�n�r� �b}9� �i� lRST�L� L�:Lf�t■!Lll�t� ■�■ �� �tl3Sf !�lf�L! � ■tet■ �� a�� i!#T�t■ epi eRe�ii ■�}� lRFT�T� � �i}af.� LAC}�S1!RlT�S1 �R113t■ ��l�L� Wit■ L�t� �13T� ■Rn� �!Rl�fS� lRA3f� ■eir��lR�L� a i�Sf �f ■Rtf 3S1 �s� � ■Rrra� ��%�t�lL!#�L� � Table A-10. Annual Average Speclated MSAT Emissions for Passenger Vehicles Tustin Ranch Costco Fuel Station Orange County, California ""b" ' Speciated emissions are calculated using the speciation pro61—h Table A -a and the mtena pollutant emissions in Table A-6. PM,, particulate matter less than 2.5 microns in diameter ROG - realwe organic gases Table A-11. Peak Hour Speciated MSAT Emissions for Fuel Delivery Trucks Tustin Ranch Costco Fuel Station Orange County, California Process Pollutant HDV 01 Peak Hour Emissions Ib/hr HDV 02 HDV 03 HDV 11 IDLING02 ROG Running and Idling Exhaust 1,3 -butadiene 1.07E-07 7.34E-08 6.51E-08 8.20E-07 3.54E-07 benzene 1.73E-06 1.18E-06 1.05E-06 1.32E-05 5.71E-06 formaldehyde 2.91E-05 1.99E-05 1.77E-05 2.23E-04 9.62E-05 acrolein (2-propenal) 1.34E-06 9.16E-07 8.13E-07 1.02E-05 4.42E-06 Naphthalene 2.18E-06 1.50E-06 1.33E-06 1.67E-05 7.21E-06 acetaldehyde 9.29E-06 6.36E-06 5.64E-06 7.11E-05 3.07E-05 ethyl benzene 8.44E-07 5.78E-07 5.13E-07 6.46E-06 2.79E-06 Acenaphthene 7.05E-09 4.82E-09 4.28E-09 5.39E-08 2.33E-08 Acenaphthylene 1.14E-08 7.82E-09 6.94E-09 8.74E-08 3.78E-08 Anthracene 4.08E-09 2.79E-09 2.47E-09 3.12E-08 1.35E-08 Benz(a)anthracene 4.02E-11 2.75E-11 2.44E-11 3.07E-10 1.33E-10 Benzo(a)pyrene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Benzo(b)fluoranthene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Benzo(g,h,i)perylene 2.68E-11 1.83E-11 1.63E-11 2.05E-10 8.85E-11 Benzo(k)fluoranthene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Chrysene 6.70E-11 4.59E-11 4.07E-11 5.12E-10 2.21E-10 Dibenz(a,h)anthracene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fluoranthene 6.13E-09 4.19E-09 3.72E-09 4.68E-08 2.02E-08 Fluorene 2.63E-08 1.80E-08 1.60E-08 2.01E-07 8.67E-08 Indeno(1,2,3-c,d)pyrene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Phenanthrene 1.14E-07 7.81E-08 6.93E-08 8.72E-07 3.77E-07 Pyrene 5.08E-09 3.48E-09 3.09E-09 3.88E-08 1.68E-08 PM2.5 Running and Idling Exhaust 1,3 -butadiene 0.00E+00 O.00E+00 O.00E+00 O.00E+00 0.00E+00 benzene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 formaldehyde 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 acrolein (2-propenal) 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Naphthalene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 acetaldehyde 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 ethyl benzene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Acenaphthene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Acenaphthylene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Anthracene 1.55E-09 1.06E-09 9.44E-10 2.84E-09 1.49E-10 Benz(a)anthracene 4.68E-11 3.20E-11 2.84E-11 8.53E-11 4.49E-12 Benzo(a)pyrene 1.93E-10 1.32E-10 1.17E-10 3.53E-10 1.86E-11 Benzo(b)fluoranthene 8.19E-11 5.61E-11 4.97E-11 1.49E-10 7.87E-12 Benzo(g,h,i)perylene 1.17E-11 8.01E-12 7.11E-12 2.13E-11 1.12E-12 Benzo(k)fluoranthene 8.19E-11 5.61E-11 4.97E-11 1.49E-10 7.87E-12 Chrysene 1.46E-10 1.00E-10 8.89E-11 2.67E-10 1.40E-11 Dibenz(a,h)anth racene 5.85E-11 4.01E-11 3.55E-11 1.07E-10 5.62E-12 Fluoranthene 2.85E-09 1.95E-09 1.73E-09 5.19E-09 2.73E-10 Fluorene 3.15E-09 2.15E-09 1.91E-09 5.74E-09 3.02E-10 Indeno(1,2,3-c,d)pyrene 2.93E-11 2.00E-11 1.78E-11 5.34E-11 2.81E-12 Phenanthrene 2.51E-08 1.72E-08 1.52E-08 4.57E-08 2.41E-09 Pyrene 2.73E-09 1.87E-09 1.66E-09 4.98E-09 2.62E-10 Page 1 of 2 Ramboll Table A-11. Peak Hour Speciated MAT Emissions for Fuel Delivery Trucks Tustin Ranch Costco Fuel Station Orange County, California Process Pollutant HDV 01 Peak Hour Emissions Ib/hr HDV 02 HDV 03 HDV 11 IDLING02 Total 1,3 -butadiene 1.07E-07 7.34E-08 6.51E-08 8.20E-07 3.54E-07 benzene 1.73E-06 1.18E-06 1.05E-06 1.32E-05 5.71E-06 formaldehyde 2.91E-05 1.99E-05 1.77E-05 2.23E-04 9.62E-05 acrolein (2-propenal) 1.34E-06 9.16E-07 8.13E-07 1.02E-05 4.42E-06 Naphthalene 2.18E-06 1.50E-06 1.33E-06 1.67E-05 7.21E-06 acetaldehyde 9.29E-06 6.36E-06 5.64E-06 7.11E-05 3.07E-05 ethyl benzene 8.44E-07 5.78E-07 5.13E-07 6.46E-06 2.79E-06 Acenaphthene 7.05E-09 4.82E-09 4.28E-09 5.39E-08 2.33E-08 Acenaphthylene 1.14E-08 7.82E-09 6.94E-09 8.74E-08 3.78E-08 Anthracene 5.63E-09 3.85E-09 3.42E-09 3.40E-08 1.36E-08 Benz(a)anthracene 8.70E-11 5.95E-11 5.28E-11 3.93E-10 1.37E-10 Benzo(a)pyrene 1.93E-10 1.32E-10 1.17E-10 3.53E-10 1.86E-11 Benzo(b)fluoranthene 8.19E-11 5.61E-11 4.97E-31 1.49E-10 7.87E-12 Benzo(g,h,i)perylene 3.85E-11 2.64E-11 2.34E-11 2.26E-10 8.96E-11 Benzo(k)fluoranthene 8.19E-11 5.61E-11 4.97E-11 1.49E-10 7.87E-12 Chrysene 2.13E-10 1.46E-10 1.30E-10 7.79E-10 2.35E-10 Dibenz(a,h)anthracene 5.85E-11 4.01E-11 3.55E-11 1.07E-10 5.62E-12 Fluoranthene 8.97E-09 6.14E-09 5.45E-09 5.20E-08 2.05E-08 Fluorene 2.94E-08 2.01E-08 1.79E-08 2.07E-07 8.71E-08 Indeno(1,2,3-c,d)pyrene 2.93E-11 2.00E-11 1.78E-11 5.34E-11 2.81E-12 Phenanthrene 1.39E-07 9.52E-08 8.45E-08 9.18E-07 3.79E-07 Pyrene 7.81E-09 5.35E-09 4.74E-09 4.38E-08 1.70E-08 Notes: 1 Speciated emissions are calculated using the speciation profiles in Table A-8 and the criteria pollutant emissions in Table A-7. Abbreviations: PM2.5 - particulate matter less than 2.5 microns in diameter ROG - reactive organic gases Page 2 of 2 Ramboll Table A-12. Annual Average Speciated MSAT Emissions for Fuel Delivery Trucks Tustin Ranch Costco Fuel Station Orange County, California Process Pollutant HDV 01 Annual Emissions Ib/ ear HDV 02 HDV 03 HDV 11 IDLING02 RRunning Idling 1,3 -butadiene 3.13E-04 2.14E-04 1.90E-04 2.39E-03 1.03E-03 benzene 5.05E-03 3.46E-03 3.07E-03 3.86E-02 1.67E-02 formaldehyde 8.51E-02 5.82E-02 5.17E-02 6.51E-01 2.81E-01 acrolein (2-propenal) 3.91E-03 2.68E-03 2.37E-03 2.99E-02 1.29E-02 Naphthalene 6.38E-03 4.37E-03 3.87E-03 4.88E-02 2.11E-02 acetaldehyde 2.71E-02 1.86E-02 1.65E-02 2.08E-01 8.96E-02 ethyl benzene 2.47E-03 1.69E-03 1.50E-03 1.89E-02 8.14E-03 Acenaphthene 2.06E-05 1.41E-05 1.25E-05 1.57E-04 6.80E-05 Acenaphthylene 3.34E-05 2.28E-05 2.03E-05 2.55E-04 1.10E-04 Anthracene 1.19E-05 8.14E-06 7.23E-06 9.10E-05 3.93E-05 Benz(a)anthracene 1.17E-07 8.04E-08 7.13E-08 8.98E-07 3.88E-07 an and Exhaust Benzo(a)pyrene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Benzo(b)fluoranthene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Benzo(g,h,i)perylene 7.83E-08 5.36E-08 4.75E-08 5.99E-07 2.58E-07 Benzo(k)fluoranthene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Chrysene 1.96E-07 1.34E-07 1.19E-07 1.50E-06 6.46E-07 Dibenz(a,h)anthracene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fluoranthene 1.79E-05 1.22E-05 1.09E-05 1.37E-04 5.91E-05 Fluorene 7.67E-05 5.25E-05 4.66E-05 5.87E-04 2.53E-04 Indeno(1,2,3-c,d)pyrene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Phenanthrene 3.33E-04 2.28E-04 2.02E-04 2.55E-03 1.10E-03 Pyrene 1.48E-05 1.02E-05 9.01E-06 1.13E-04 4.90E-05 PMZ.S Running and Idling Exhaust 1,3 -butadiene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 benzene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 formaldehyde 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 acrolein (2-propenal) 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Naphthalene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 acetaldehyde 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 ethyl benzene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Acenaphthene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Acenaphthylene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Anthracene 4.54E-06 3.11E-06 2.76E-06 8.28E-06 4.36E-07 Benz(a)anthracene 1.37E-07 9.35E-08 8.29E-08 2.49E-07 1.31E-08 Benzo(a)pyrene 5.65E-07 3.86E-07 3.43E-07 1.03E-06 5.42E-08 Benzo(b)fluoranthene 2.39E-07 1.64E-07 1.45E-07 4.36E-07 2.30E-08 Benzo(g,h,i)perylene 3.42E-08 2.34E-08 2.08E-08 6.23E-08 3.28E-09 Benzo(k)fluoranthene 2.39E-07 1.64E-07 1.45E-07 4.36E-07 2.30E-08 Chrysene 4.27E-07 2.92E-07 2.59E-07 7.79E-07 4.10E-08 Dibenz(a,h)anthracene 1.71E-07 1.17E-07 1.04E-07 3.12E-07 1.64E-08 Fluoranthene 8.32E-06 5.69E-06 5.05E-06 1.52E-05 7.99E-07 Fluorene 9.19E-06 6.29E-06 5.58E-06 1.68E-05 8.83E-07 Indeno(1,2,3-c,d)pyrene 8.55E-08 5.85E-08 5.19E-08 1.56E-07 8.21E-09 Phenanthrene 7.32E-05 5.01E-05 4.45E-05 1.34E-04 7.03E-06 Pyrene 7.97E-06 5.46E-06 4.84E-06 1.45E-05 7.66E-07 Page 1 of 2 Ramboll Table A-12. Annual Average Speciated MAT Emissions for Fuel Delivery Trucks Tustin Ranch Costco Fuel Station Orange County, California Process Pollutant HDV 01 Annual Emissions Ib/ ear HDV 02 HDV 03 HDV 11 IDLING02 DPM Running and Idling Exhaust DieselExhPM 1.79E-01 1.22E-01 1.08E-01 3.26E-01 1.71E-02 1,3 -butadiene 3.13E-04 2.14E-04 1.90E-04 2.39E-03 1.03E-03 benzene 5.05E-03 3.46E-03 3.07E-03 3.86E-02 1.67E-02 formaldehyde 8.51E-02 5.82E-02 5.17E-02 6.51E-01 2.81E-01 acrolein (2-propenal) 3.91E-03 2.68E-03 2.37E-03 2.99E-02 1.29E-02 Naphthalene 6.38E-03 4.37E-03 3.87E-03 4.88E-02 2.11E-02 acetaldehyde 2.71E-02 1.86E-02 1.65E-02 2.08E-01 8.96E-02 ethyl benzene 2.47E-03 1.69E-03 1.50E-03 1.89E-02 8.14E-03 Total Acenaphthene 2.06E-05 1.41E-05 1.25E-05 1.57E-04 6.80E-05 Acenaphthylene 3.34E-05 2.28E-05 2.03E-05 2.55E-04 1.10E-04 Anthracene 1.64E-05 1.12E-05 9.98E-06 9.93E-05 3.97E-05 Benz(a)anthracene 2.54E-07 1.74E-07 1.54E-07 1.15E-06 4.01E-07 Benzo(a)pyrene 5.65E-07 3.86E-07 3.43E-07 1.03E-06 5.42E-08 Benzo(b)fluoranthene 2.39E-07 1.64E-07 1.45E-07 4.36E-07 2.30E-08 Benzo(g,h,i)perylene 1.12E-07 7.70E-08 6.83E-08 6.61E-07 2.62E-07 Benzo(k)fluoranthene 2.39E-07 1.64E-07 1.45E-07 4.36E-07 2.30E-08 Chrysene 6.23E-07 4.26E-07 3.78E-07 2.28E-06 6.87E-07 Dibenz(a,h)anth racene 1.71E-07 1.17E-07 1.04E-07 3.12E-07 1.64E-08 Fluoranthene 2.62E-05 1.79E-05 1.59E-05 1.52E-04 5.99E-05 Fluorene 8.59E-05 5.88E-05 5.22E-05 6.03E-04 2.54E-04 Indeno(1,2,3-c,d)pyrene 8.55E-08 5.85E-08 5.19E-08 1.56E-07 8.21E-09 Phenanthrene 4.06E-04 2.78E-04 2.47E-04 2.68E-03 1.11E-03 Pyrene 2.28E -05 1.56E-05 1.39E-05 1.28E-04 4.97E-05 DieselExhPM 1.79E-01 1.22E-01 1.08E-01 3.26E-01 1.71E-02 Notes: t Speciated emissions are calculated using the speciation profiles in Table A-8 and the criteria pollutant emissions in Table A-7. Abbreviations: DPM - diesel particulate matter PM2.5 - particulate matter less than 2.5 microns in diameter ROG - reactive organic gases Page 2 of 2 Ramboll Table A-13. Gasoline Transfer and Dispensing Emissions Tustin Ranch Costco Fuel Station Orange County, California Throughput: Maximum Hourly 4,800 gallons/hr Annual 24.6 million gallons/year Notes: ' Emission factors obtained from Table X-1 of SCAQMD Risk Assessment Procedures for Rules 1401, 1401.1, and 212. Available at: http://www.agmd.gov/docs/default-source/permitting/rule-1401-risk-assessment/riskassessproc-v8-l.pdf?sfvrsn=l2. Accessed: September 2019. Z Maximum hourly throughput is based on a maximum of 15 vehicles per dispensing position per hour, with an average fill up of 10 gallons per vehicle Abbreviations: hr - hour Ib - pounds SCAQMD - South Coast Air Quality Management District VOC - volatile organic compounds Page 1 of 1 Ramboll LOADING Loading BREATH Breathing Source Group ID REFILL Hose Refueling Permeation Total SPILL Spillage VOC Emission Factor (Ib/1,000 gallons) 0.15 0.024 0.32 0.009 0.24 Weight Percent Benzene 0.455% 0.455% 0.455% 0.455% 0.707% Ethyl Benzene 0.107% 0.107% 0.107% 0.107% 1.290% Naphthalene 0.0004% 0.0004% 0.0004% 0.0004% -- 0.174% Emissions(lb/hr) Benzene 0.0032760 0.0005242 0.0069888 0.0001966 0.0071854 0.0081446 Ethyl Benzene 0.0007704 0.0001233 0.0016435 0.0000462 0.0016897 0.0148608 Naphthalene 0.0000029 0.0000005 0.0000061 0.0000002 0.0000063 0.0020045 Emissions (Ib/year) Benzene 16.79 2.69 35.82 1.01 36.83 41.75 Ethyl Benzene 3.95 0.63 8.42 0.24 8.66 76.18 Naphthalene 0.01 0.00 0.03 0.00 0.03 10.28 Throughput: Maximum Hourly 4,800 gallons/hr Annual 24.6 million gallons/year Notes: ' Emission factors obtained from Table X-1 of SCAQMD Risk Assessment Procedures for Rules 1401, 1401.1, and 212. Available at: http://www.agmd.gov/docs/default-source/permitting/rule-1401-risk-assessment/riskassessproc-v8-l.pdf?sfvrsn=l2. Accessed: September 2019. Z Maximum hourly throughput is based on a maximum of 15 vehicles per dispensing position per hour, with an average fill up of 10 gallons per vehicle Abbreviations: hr - hour Ib - pounds SCAQMD - South Coast Air Quality Management District VOC - volatile organic compounds Page 1 of 1 Ramboll APPENDIX B AERMOD INPUTS Table B-1. Modeled Source Parameters - Mobile Sources Tustin Ranch Costco Fuel Station Orange County, California Source Parameters Fuel Delivery Truck Travel Passenger Vehicle Travel Fuel Delivery Truck Idling Passenger Vehicle Idling Source Type Line -Area Line -Area Areapoly Areapoly Width (m) 3.3 per lane 3.3 per lane N/A N/A Initial Vertical Dimension (m) 6.8 1 2.6 6.8 2.60 Initial Vertical Dispersion Coefficient3,4 (m) 3.16 1.21 0.79 0.30 Release Hei ht5 (m) 3.4 1.3 3.4 1.3 Notes: 1 Road width is estimated as a product of the number of lanes and width of a lane. The width of the lane is defined as 3.3 meters based on the USEPA Transportation Conformity Guidance. Z The initial vertical dimension for truck exhaust is assumed to be equal to 1.7 times the vehicle height. Vehicle height is based on the USEPA Transportation Conformity Guidance. 3 The initial vertical dispersion coefficient for vehicle travel is estimated as the initial vertical dimension divided by 2.15 based on the USEPA Transportation Conformity Guidance. 4 For on-site idling emission sources, the initial vertical dispersion coefficient is estimated as the initial vertical dimension divided by 4.3, based on the USEPA AERMOD User Guide. S Release height is estimated as half of the initial vertical dimension based on the USEPA Transportation Conformity Guidance. Abbreviations: AERMOD - American Meteorological Society/Environmental Protection Agency Regulatory Model ft - feet m - meters N/A - not applicable PM - particulate matter USEPA - United States Environmental Protection Agency I-215 - Interstate 215 References: USEPA. 2015. Transportation Conformity Guidance for Quantitative Hot -spot Analyses in PM2.5 and PM10 Nonattainment and Maintenance Areas Appendices. November. Available at: https://nepis.epa.gov/Exe/ZyPdf.cgi?Dockey=P100NN22.pdf, Accessed: September 2019. USEPA. 2019. User's Guide for the AMS/EPA Regulatory Model. August. Available at: https://www3.epa.gov/ttn/scram/models/aermod/aermod_userguide.pdf. Accessed: September 2019. Page 1 of 1 Ramboll Table B-2. Modeled Emission Rates - Mobile Sources Tustin Ranch Costco Fuel Station Orange County, California Modeled Roadwa Links' Roadway Link Description Source Group ID' Total Area of Source in Source Group m2 Modeled Emission Rate Source IDZ s m2 Passenger Vehicle Off -Site Travel Tustin Ranch Rd.(s/o EI Camino Real) LDV_O1 7,068 A0000012 1.415E-04 A0000013 1.415E-04 Tustin Ranch Rd. (btwn. Bryan Ave. and EI Camino Real) LDV 02 4,837 A0000020 2.067E-04 A0000021 2.067E-04 Bryan Ave. (btwn. Tustin Ranch Rd. and Market St.) LDV_03 2,862 A0000016 3.494E-04 A0000017 3.494E-04 Bryan Ave. (btwn. Market St. and Myford Rd.) LDV_04 4,002 A0000038 2.499E-04 A0000039 2.499E-04 A0000040 2.499E-04 Bryan Ave. (e/o Myford Rd.) LDV_05 4,667 A0000056 2.143E-04 A0000057 2.143E-04 A0000058 2.143E-04 Myford Rd. (n/o Bryan Ave.) LDV_06 2,897 A0000059 3.452E-04 A0000060 3.452E-04 A0000061 3.452E-04 A0000062 3.452E-04 A0000063 3.452E-04 A0000064 3.452E-04 Myford Rd. (btwn. Bryan Ave. and EI Camino Real) LDV -07 _ 3251 , A0000008 3.076E-04 A0000009 3.076E-04 A0000010 3.076E-04 A0000011 3.076E-04 EI Camino Real (e/o Myford Rd.) LDV -08 5,216 A0000043 1.917E-04 A0000044 1.917E-04 A0000045 1.917E-04 A0000046 1.917E-04 A0000047 1.917E-04 A0000048 1.917E-04 A0000049 1.917E-04 A0000050 1.917E-04 A0000051 1.917E-04 A0000052 1.917E-04 A0000053 1.917E-04 A0000054 1.917E-04 A0000055 1.917E-04 EI Camino Real (btwn. Auto Center Dr. and Myford Rd.) LDV_09 2,186 A0000041 4.574E-04 A0000042 4.574E-04 EI Camino Real (btwn. Tustin Ranch Rd. and Auto Center Dr.) LDV_10 4,622 A0000005 2.163E-04 A0000006 2.163E-04 A0000007 2.163E-04 Page 1 of 2 Ramboll Table B-2. Modeled Emission Rates - Mobile Sources Tustin Ranch Costco Fuel Station Orange County, California Modeled Roadway Links' Roadway Link Description Source Group ID' Total Area of Source in Source Group m2 Modeled Emission Rate Source IDS s mZ Passenger Vehicle On -Site Driveway Travel Market St. (Project Driveway) LDV 1,903 A0000024 5.256E-04 A0000025 5.256E-04 A0000026 5.256E-04 A0000027 5.256E-04 A0000028 A0000028 5.256E-04 A0000029 5.256E-04 A0000030 5.256E-04 A0000031 5.256E-04 Auto Center Dr. (Project Driveway) LDV 12 - 481 A0000001 2.077E-03 A0000002 2.077E-03 A0000003 2.077E-03 A0000004 2.077E-03 Entry from Tustin Ranch Road (Project Driveway) LDV 13 2,417 A0000065 4.138E-04 A0000066 4.138E-04 A0000067 4.138E-04 A0000068 4.138E-04 A0000069 4.138E-04 A0000070 4.138E-04 A0000071 4.138E-04 A0000072 4.138E-04 A0000073 4.138E-04 A0000074 4.138E-04 Fuel Delivery Truck Off -Site Travel Tustin Ranch Rd. (s/o EI Camino Real) HDV 01 7,068 A0000014 1.415E-04 A0000015 1.415E-04 Tustin Ranch Rd. (btwn. Bryan Ave. and EI Camino Real) HDV 02 4,837 A0000022 2.067E-04 A0000023 2.067E-04 Bryan Ave. (btwn. Tustin Ranch Rd. and Market St. HDV_03 2,862 A0000018 3.494E-04 A0000019 3.494E-04 Fuel Delivery Truck On -Site Driveway Travel Market St. (Project Driveway) HDV_11 1,903 A0000032 5.256E-04 A0000033 5.256E-04 A0000034 5.256E-04 A0000035 5.256E-04 A0000036 5.256E-04 A0000037 5.256E-04 Passenger Vehicle Idling, Starting, and Evaporative Emissions Evaprative On -Site Idling, Starting, and Evaporative IDLING01 4,340 IDLING01 2.304E-04 Fuel Delivery Truck Idling On -Site Idling I IDLING02 1 4,340 IDLING02 2.304E-04 Notes: ' Refer to Figure 1 for spatial location of modeled roadways. z Since the roadways are not always a straight line, they are represented by a series of line (area) sources. Abbreviations: Ave- avenue n/o - north of btwn - between Rd - road g/s/mz - grams per second per square meter s/o - south of e/o - east of St - street mZ - square meters Page 2 of 2 Ramboll Table B-3. Modeled Source Parameters - Point Sources Tustin Ranch Costco Fuel Station Orange County, California Notes 1 Stack parameters are based on SCAQMD Risk Assessment Procedures, Appendix X and Appendix XIII - Exhibit X. Available at: http://www.agmd.gov/docs/default-source/permitting/rule-1401-risk-assessment/riskassessproc-v8- i.pdf?sfvrsn=l2. Accessed: September 2019. Abbreviations: GDF - gasoline dispensing facility K - Kelvin m - meters s - second SCAQMD - South Coast Air Quality Management District Page 1 of 1 Ramboll Stack Stack Stack Emission Height' Temperature' Exit Velocity' Diameter" Rate Model ID Description m K (m/s) m s LOADING GDF loading emissions 3.66 291.48 0.00063 0.051 1 BREATH I GDF breathing emissions 1 3.66 1 288.71 1 0.00010 1 0.051 1 Notes 1 Stack parameters are based on SCAQMD Risk Assessment Procedures, Appendix X and Appendix XIII - Exhibit X. Available at: http://www.agmd.gov/docs/default-source/permitting/rule-1401-risk-assessment/riskassessproc-v8- i.pdf?sfvrsn=l2. Accessed: September 2019. Abbreviations: GDF - gasoline dispensing facility K - Kelvin m - meters s - second SCAQMD - South Coast Air Quality Management District Page 1 of 1 Ramboll Table B-4. Modeled Source Parameters - Volume Sources Tustin Ranch Costco Fuel Station Orange County, California Notes• 1 Release height and Sigma Z are based on SCAQMD Risk Assessment Procedures, Appendix X. Available at: http://www.agmd.gov/docs/default-source/permitting/rule-1401-risk-assessment/riskassessproc-v8- i.pdf?sfvrsn=l2. Accessed: August 2019. z Initial lateral dimension is based on the dimensions of the gas station canopy. Abbreviations: m - meters SCAQMD - South Coast Air Quality Management District Page 1 of 1 Ramboll Initial Lateral Initial Vertical Release Dimension, Dimension, Emission Height' Sigma y2 Sigma Z' Rate Model ID Description m m m s REFILL I Refueling and Hose Permeation 1.00 8.56 2.33 1 SPILL ISpillage 0.00 8.56 2.33 1 Notes• 1 Release height and Sigma Z are based on SCAQMD Risk Assessment Procedures, Appendix X. Available at: http://www.agmd.gov/docs/default-source/permitting/rule-1401-risk-assessment/riskassessproc-v8- i.pdf?sfvrsn=l2. Accessed: August 2019. z Initial lateral dimension is based on the dimensions of the gas station canopy. Abbreviations: m - meters SCAQMD - South Coast Air Quality Management District Page 1 of 1 Ramboll APPENDIX C HARP2 RESULTS Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 1 425805.03 3732920.28 Sensitive 0.21 6.70E-04 5.63E-03 2 426394.07 3731599.40 Worker 0.02 7.43E-04 7.15E-03 3 426419.07 3731599.40 Worker 0.02 7.29E-04 7.06E-03 4 426444.07 3731599.40 Worker 0.02 7.14E-04 7.17E-03 5 426469.07 3731599.40 Worker 0.02 6.98E-04 7.12E-03 6 426494.07 3731599.40 Worker 0.02 6.81E-04 6.89E-03 7 426519.07 3731599.40 Worker 0.02 6.64E-04 6.77E-03 8 426544.07 3731599.40 Worker 0.02 6.46E-04 6.75E-03 9 426344.07 3731624.40 Worker 0.03 8.21E-04 7.93E-03 10 426369.07 3731624.40 Worker 0.03 8.08E-04 7.77E-03 11 426394.07 3731624.40 Worker 0.03 7.93E-04 7.49E-03 12 426419.07 3731624.40 Worker 0.03 7.76E-04 7.50E-03 13 426444.07 3731624.40 Worker 0.02 7.59E-04 7.57E-03 14 426469.07 3731624.40 Worker 0.02 7.40E-04 7.48E-03 15 426494.07 3731624.40 Worker 0.02 7.22E-04 7.20E-03 16 426519.07 3731624.40 Worker 0.02 7.02E-04 7.15E-03 17 426544.07 3731624.40 Worker 0.02 6.82E-04 7.10E-03 18 426569.07 3731624.40 Worker 0.02 6.62E-04 6.87E-03 19 426594.07 3731624.40 Worker 0.02 6.42E-04 6.51E-03 20 426319.07 3731649.40 Worker 0.03 8.93E-04 8.26E-03 21 426344.07 3731649.40 Worker 0.03 8.80E-04 8.41E-03 22 426369.07 3731649.40 Worker 0.03 8.65E-04 8.15E-03 23 426394.07 3731649.40 Worker 0.03 8.47E-04 7.95E-03 24 426419.07 3731649.40 Worker 0.03 8.28E-04 8.01E-03 25 426444.07 3731649.40 Worker 0.03 8.09E-04 7.98E-03 26 426469.07 3731649.40 Worker 0.03 7.88E-04 7.78E-03 27 426494.07 3731649.40 Worker 0.02 7.66E-04 7.60E-03 28 426519.07 3731649.40 Worker 0.02 7.44E-04 7.57E-03 29 426544.07 3731649.40 Worker 0.02 7.22E-04 7.42E-03 30 426569.07 3731649.40 Worker 0.02 6.99E-04 7.08E-03 31 426594.07 3731649.40 Worker 0.02 6.77E-04 6.74E-03 32 426619.07 3731649.40 Worker 0.02 6.54E-04 6.61E-03 33 426294.07 3731674.40 Worker 0.03 9.75E-04 9.06E-03 34 426319.07 3731674.40 Worker 0.03 9.62E-04 8.83E-03 35 426344.07 3731674.40 Worker 0.03 9.46E-04 8.89E-03 36 426369.07 3731674.40 Worker 0.03 9.28E-04 8.56E-03 37 426394.07 3731674.40 Worker 0.03 9.08E-04 8.42E-03 38 426419.07 3731674.40 Worker 0.03 8.87E-04 8.55E-03 39 426444.07 3731674.40 Worker 0.03 8.64E-04 8.46E-03 40 426469.07 3731674.40 Worker 0.03 8.40E-04 8.12E-03 41 426494.07 3731674.40 Worker 0.03 8.15E-04 8.07E-03 42 426519.07 3731674.40 Worker 0.03 7.90E-04 7.98E-03 43 426544.07 3731674.40 Worker 0.02 7.65E-04 7.70E-03 44 426569.07 3731674.40 Worker 0.02 7.39E-04 7.26E-03 45 426594.07 3731674.40 Worker 0.02 7.14E-04 7.10E-03 46 426619.07 3731674.40 Worker 0.02 6.89E-04 6.79E-03 47 426294.07 3731699.40 Worker 0.03 1.05E-03 9.59E-03 48 426319.07 3731699.40 Worker 0.03 1.04E-03 9.46E-03 49 426344.07 3731699.40 Worker 0.03 1.02E-03 9.39E-03 50 426369.07 3731699.40 Worker 0.03 9.99E-04 9.00E-03 51 426394.07 3731699.40 Worker 0.03 9.77E-04 9.02E-03 52 426419.07 3731699.40 Worker 0.03 9.52E-04 9.07E-03 53 426444.07 3731699.40 Worker 0.03 9.25E-04 8.88E-03 54 426469.07 3731699.40 Worker 0.03 8.98E-04 8.63E-03 55 426494.07 3731699.40 Worker 0.03 8.69E-04 8.59E-03 56 426519.07 3731699.40 Worker 0.03 8.40E-04 8.37E-03 57 426544.07 3731699.40 Worker 0.03 8.11E-04 7.90E-03 58 426569.07 3731699.40 Worker 0.03 7.82E-04 7.63E-03 59 426594.07 3731699.40 Worker 0.02 7.54E-04 7.35E-03 60 426619.07 3731699.40 Worker 0.02 7.26E-04 7.17E-03 61 426644.07 3731699.40 Worker 0.02 6.98E-04 7.00E-03 62 426269.07 3731724.40 Worker 0.04 1.16E-03 1.05E-02 63 426294.07 3731724.40 Worker 0.04 1.14E-03 1.02E-02 64 426319.07 3731724.40 Worker 0.04 1.13E-03 1.01E-02 65 426344.07 3731724.40 Worker 0.04 1.10E-03 9.94E-03 66 426369.07 3731724.40 Worker 0.03 1.08E-03 9.63E-03 67 426394.07 3731724.40 Worker 0.03 1.05E-03 9.73E-03 68 426419.07 3731724.40 Worker 0.031.03E-03 9.68E-03 69 426444.07 3731724.40 Worker t 0.03 9.96E-04 9.29E-03 70 426469.07 3731724.40 Worker 1 0.03 9.63E-04 9.26E-03 Page 1 of 23 RamboH Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 71 426494.07 3731724.40 Worker 0.03 9.29E-04 9.10E-03 72 426519.07 3731724.40 Worker 0.03 8.95E-04 8.70E-03 73 426544.07 3731724.40 Worker 0.03 8.62E-04 8.20E-03 74 426569.07 3731724.40 Worker 0.03 8.29E-04 7.99E-03 75 426594.07 3731724.40 Worker 0.03 7.97E-04 7.68E-03 76 426619.07 3731724.40 Worker 0.02 7.65E-04 7.54E-03 77 426644.07 3731724.40 Worker 0.02 7.34E-04 7.18E-03 78 426269.07 3731749.40 Worker 0.04 1.26E-03 1.12E-02 79 426294.07 3731749.40 Worker 0.04 1.25E-03 1.08E-02 80 426319.07 3731749.40 Worker 0.04 1.22E-03 1.09E-02 81 426344.07 3731749.40 Worker 0.04 1.20E-03 1.05E-02 82 426369.07 3731749.40 Worker 0.04 1.17E-03 1.03E-02 83 426394.07 3731749.40 Worker 0.04 1.14E-03 1.05E-02 84 426419.07 3731749.40 Worker 0.04 1.11E-03 1.03E-02 85 426444.07 3731749.40 Worker 0.03 1.08E-03 9.95E-03 86 426469.07 3731749.40 Worker 0.03 1.04E-03 9.94E-03 87 426494.07 3731749.40 Worker 0.03 9.97E-04 9.57E-03 88 426519.07 3731749.40 Worker 0.03 9.57E-04 8.96E-03--- 89 426544.07 3731749.40 Worker 0.03 9.18E-04 8.68E-03 90 426569.07 3731749.40 Worker 0.03 8.80E-04 8.25E-03 91 426594.07 3731749.40 Worker 0.03 8.43E-04 8.15E-03 92 426619.07 3731749.40 Worker 0.03 8.07E-04 7.77E-03 93 426644.07 3731749.40 Worker 0.02 7.72E-04 7.30E-03 94 426244.07 3731774.40 Worker 0.05 1.40E-03 1.18E-02 95 426269.07 3731774.40 Worker 0.04 1.39E-03 1.21E-02 96 426294.07 3731774.40 Worker 0.04 1.36E-03 1.16E-02 97 426319.07 3731774.40 Worker 0.04 1.34E-03 1.17E-02 98 426344.07 3731774.40 Worker 0.04 1.31E-03 1.12E-02 99 426369.07 3731774.40 Worker 0.04 1.28E-03 1.12E-02 100 426394.07 3731774.40 Worker 0.04 1.24E-03 1.12E-02 101 426419.07 3731774.40 Worker 0.04 1.21E-03 1.08E-02 102 426444.07 3731774.40 Worker 0.04 1.18E-03 1.08E-02 103 426494.07 3731774.40 Worker 0.03 1.08E-03 9.94E-03 104 426519.07 3731774.40 Worker 0.03 1.03E-03 9.44E-03 105 426544.07 3731774.40 Worker 0.03 9.79E-04 8.99E-03 106 426569.07 3731774.40 Worker 0.03 9.35E-04 8.82E-03 107 426594.07 3731774.40 Worker 0.03 8.93E-04 8.46E-03 108 426619.07 3731774.40 Worker 0.03 8.52E-04 7.87E-03 109 426644.07 3731774.40 Worker 0.03 8.13E-04 7.83E-03 110 426244.07 3731799.40 Worker 0.05 1.55E-03 1.28E-02 111 426269.07 3731799.40 Worker 0.05 1.53E-03 1.30E-02 112 426294.07 3731799.40 Worker 0.05 1.50E-03 1.26E-02 113 426319.07 3731799.40 Worker 0.05 1.47E-03 1.25E-02 114 426344.07 3731799.40 Worker 0.05 1.43E-03 1.20E-02 115 426369.07 3731799.40 Worker 0.04 1.39E-03 1.22E-02 116 426394.07 3731799.40 Worker 0.04 1.36E-03 1.20E-02 117 426419.07 3731799.40 Worker 0.04 1.32E-03 1.16E-02 118 426469.07 3731799.40 Worker 0.05 1.37E-03 1.11E-02 119 426494.07 3731799.40 Worker 0.04 1.19E-03 1.03E-02 120 426519.07 3731799.40 Worker 0.04 1.11E-03 9.91E-03 121 426544.07 3731799.40 Worker 0.03 1.05E-03 9.58E-03 122 426569.07 3731799.40 Worker 0.03 9.96E-04 9.23E-03 123 426594.07 3731799.40 Worker 0.03 9.47E-04 8.54E-03 124 426619.07 3731799.40 Worker 0.03 9.00E-04 8.48E-03 125 426644.07 3731799.40 Worker 0.03 8.56E-04 8.20E-03 126 426219.07 3731824.40 Worker 0.06 1.74E-03 1.38E-02 127 426244.07 3731824.40 Worker 0.06 1.72E-03 1.40E-02 128 426269.07 3731824.40 Worker 0.05 1.70E-03 1.41E-02 129 426294.07 3731824.40 Worker 0.05 1.66E-03 1.38E-02 130 426319.07 3731824.40 Worker 0.05 1.62E-03 1.34E-02 131 426344.07 3731824.40 Worker 0.05 1.58E-03 1.30E-02 132 426369.07 3731824.40 Worker 0.05 1.53E-03 1.31E-02 133 426394.07 3731824.40 Worker 0.05 1.49E-03 1.27E-02 134 426419.07 3731824.40 Worker 0.05 1.47E-03 1.27E-02 135 426444.07 3731824.40 Worker 0.06 1.65E-03 1.25E-02 136 426469.07 3731824.40 Worker 0.05 1.40E-03 1.14E-02 137 426494.07 3731824.40 Worker 0.04 1.28E-03 1.09E-02 138 426519.07 3731824.40 Worker 0.04 1.19E-03 1.05E-02 139 426544.07 3731824.40 Worker 0.04 1.12E-03 1.01E-02 140 426569.07 3731824.40 Worker 0.03 1.06E-03 9.39E-03 Page 2 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 141 426594.07 3731824.40 Worker 0.03 1.01E-03 9.23E-03 142 426619.07 3731824.40 Worker 0.03 9.52E-04 8.90E-03 143 426644.07 3731824.40 Worker 0.03 9.02E-04 8.44E-03 144 426219.07 3731849.40 Worker 0.06 1.95E-03 1.51E-02 145 426244.07 3731849.40 Worker 0.06 1.93E-03 1.54E-02 146 426269.07 3731849.40 Worker 0.06 1.89E-03 1.53E-02 147 426294.07 3731849.40 Worker 0.06 1.85E-03 1.51E-02 148 426319.07 3731849.40 Worker 0.06 1.80E-03 1.45E-02 149 426344.07 3731849.40 Worker 0.06 1.75E-03 1.43E-02 150 426369.07 3731849.40 Worker 0.05 1.69E-03 1.43E-02 151 426394.07 3731849.40 Worker 0.05 1.65E-03 1.38E-02 152 426444.07 3731849.40 Worker 0.05 1.63E-03 1.29E-02 153 426469.07 3731849.40 Worker 0.05 1.48E-03 1.21E-02 154 426494.07 3731849.40 Worker 0.04 1.37E-03 1.14E-02 155 426519.07 3731849.40 Worker 0.04 1.28E-03 1.12E-02 156 426544.07 3731849.40 Worker 0.04 1.20E-03 1.04E-02 157 426569.07 3731849.40 Worker 0.04 1.13E-03 1.01E-02 158 426594.07 3731849.40 Worker 0.03 1.07E-03 9.72E-03 159 426619.07 3731849.40 Worker 0.03 1.01E-03 9.20E-03 160 426644.07 3731849.40 Worker 0.03 9.51E-04 9.03E-03 161 426219.07 3731874.40 Worker 0.07 2.20E-03 1.66E-02 162 426244.07 3731874.40 Worker 0.07 2.17E-03 1.70E-02 163 426269.07 3731874.40 Worker 0.07 2.13E-03 1.67E-02 164 426294.07 3731874.40 Worker 0.07 2.08E-03 1.66E-02 165 426319.07 3731874.40 Worker 0.06 2.02E-03 1.57E-02 166 426344.07 3731874.40 Worker 0.06 1.95E-03 1.58E-02 167 426369.07 3731874.40 Worker 0.06 1.88E-03 1.54E-02 168 426394.07 3731874.40 Worker 0.06 1.83E-03 1.51E-02 169 426419.07 3731874.40 Worker 0.07 1.98E-03 1.48E-02 170 426444.07 3731874.40 worker 0.06 1.71E-03 1.34E-02 171 426469.07 3731874.40 Worker 0.05 1.58E-03 1.28E-02 172 426494.07 3731874.40 Worker 0.05 1.47E-03 1.24E-02 173 426519.07 3731874.40 Worker 0.04 1.37E-03 1.16E-02 174 426544.07 3731874.40 Worker 0.04 1.29E-03 1.11E-02 175 426569.07 3731874.40 Worker 0.04 1.21E-03 1.07E-02 176 426594.07 3731874.40 Worker 0.04 1.13E-03 1.01E-02 177 426619.07 3731874.40 Worker 0.03 1.06E-03 9.89E-03 178 426669.07 3731874.40 Worker 0.03 9.44E-04 8.77E-03 179 426694.07 3731874.40 Worker 0.03 8.91E-04 8.29E-03 180 426719.07 3731874.40 Worker 0.03 8.42E-04 7.93E-03 181 426194.07 3731899.40 Worker 0.08 2.53E-03 1.94E-02 182 426219.07 3731899.40 Worker 0.08 2.51E-03 1.84E-02 183 426244.07 3731899.40 Worker 0.08 2.47E-03 1.89E-02 184 426269.07 3731899.40 Worker 0.08 2.42E-03 1.82E-02 185 426294.07 3731899.40 Worker 0.08 2.35E-03 1.82E-02 186 426319.07 3731899.40 Worker 0.07 2.27E-03 1.74E-02 187 426344.07 3731899.40 Worker 0.07 2.18E-03 1.75E-02 188 426369.07 3731899.40 Worker 0.07 2.10E-03 1.67E-02 189 426394.07 3731899.40 Worker 0.07 2.07E-03 1.67E-02 190 426419.07 3731899.40 Worker 0.07 2.06E-03 1.54E-02 191 426444.07 3731899.40 Worker 0.06 1.84E-03 1.44E-02 192 426469.07 3731899.40 Worker 0.05 1.70E-03 1.38E-02 193 426494.07 3731899.40 Worker 0.05 1.58E-03 1.30E-02 194 426519.07 3731899.40 Worker 0.05 1.47E-03 1.23E-02 195 426544.07 3731899.40 Worker 0.04 1.37E-03 1.18E-02 196 426569.07 3731899.40 Worker 0.04 1.28E-03 1.12E-02 197 426594.07 3731899.40 Worker 0.04 1.20E-03 1.09E-02 198 426619.07 3731899.40 Worker 0.04 1.12E-03 1.02E-02 199 426644.07 3731899.40 Worker 0.03 1.06E-03 9.52E-03 200 426669.07 3731899.40 Worker 0.03 9.92E-04 8.95E-03 201 426694.07 3731899.40 Worker 0.03 9.33E-04 8.68E-03 202 426719.07 3731899.40 Worker 0.03 8.79E-04 8.38E-03 203 426744.07 3731899.40 Worker 0.03 8.29E-04 8.01E-03 204 426769.07 3731899.40 Worker 0.03 7.85E-04 7.55E-03 205 426794.07 3731899.40 Worker 0.02 7.43E-04 7.27E-03 206 426169.07 3731924.40 Worker 0.10 2.92E-03 2.15E-02 207 426194.07 3731924.40 Worker 0.09 2.91E-03 2.18E-02 208 426219.07 3731924.40 Worker 0.09 2.89E-03 2.06E-02 209 426244.07 3731924.40 Worker 0.09 2.84E-03 2.11E-02 210 426269.07 3731924.40 Worker 0.09 2.77E-03 2.04E-02 Page 3 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 211 426294.07 3731924.40 Worker 0.09 2.69E-03 2.00E-02 212 426319.07 3731924.40 Worker 0.08 2.58E-03 1.96E-02 213 426344.07 3731924.40 Worker 0.08 2.47E-03 1.92E-02 214 426369.07 3731924.40 Worker 0.08 2.36E-03 1.86E-02 215 426419.07 3731924.40 Worker 0.07 2.19E-03 1.64E-02 216 426444.07 3731924.40 Worker 0.06 1.99E-03 1.55E-02 217 426469.07 3731924.40 Worker 0.06 1.84E-03 1.47E-02 218 426494.07 3731924.40 Worker 0.05 1.70E-03 1.38E-02 219 426519.07 3731924.40 Worker 0.05 1.58E-03 1.32E-02 220 426544.07 3731924.40 Worker 0.05 1.47E-03 1.25E-02 221 426569.07 3731924.40 Worker 0.04 1.37E-03 1.20E-02 222 426594.07 3731924.40 Worker 0.04 1.27E-03 1.12E-02 223 426619.07 3731924.40 Worker 0.04 1.19E-03 1.04E-02 224 426644.07 3731924.40 Worker 0.04 1.11E-03 9.84E-03 225 426669.07 3731924.40 Worker 0.03 1.04E-03 9.52E-03 226 426694.07 3731924.40 Worker 0.03 9.77E-04 9.12E-03 227 426719.07 3731924.40 Worker 0.03 9.18E-04 8.61E-03 228 426744.07 3731924.40 Worker 0.03 8.64E-04 8.19E-03 229 426769.07 3731924.40 Worker 0.03 8.16E-04 7.84E-03 230 426794.07 3731924.40 Worker 0.02 7.71E-04 7.47E-03 231 426819.07 3731924.40 Worker 0.02 7.31E-04 7.03E-03 232 426169.07 3731949.40 Worker 0.11 3.40E-03 2.38E-02 233 426194.07 3731949.40 Worker 0.11 3.40E-03 2.47E-02 234 426219.07 3731949.40 Worker 0.11 3.37E-03 2.32E-02 235 426244.07 3731949.40 Worker 0.11 3.30E-03 2.38E-02 236 426269.07 3731949.40 Worker 0.10 3.21E-03 2.32E-02 237 426294.07 3731949.40 Worker 0.10 3.10E-03 2.20E-02 238 426319.07 3731949.40 Worker 0.09 2.96E-03 2.21E-02 239 426344.07 3731949.40 Worker 0.09 2.81E-03 2.10E-02 240 426369.07 3731949.40 Worker 0.09 2.69E-03 2.06E-02 241 426394.07 3731949.40 Worker 0.09 2.69E-03 1.89E-02 242 426419.07 3731949.40 Worker 0.08 2.37E-03 1.75E-02 243 426444.07 3731949.40 Worker 0.07 2.17E-03 1.67E-02 244 426469.07 3731949.40 Worker 0.06 1.99E-03 1.56E-02 245 426494.07 3731949.40 Worker 0.06 1.84E-03 1.48E-02 246 426519.07 3731949.40 Worker 0.05 1.70E-03 1.40E-02 247 426544.07 3731949.40 Worker 0.05 1.57E-03 1.34E-02 248 426569.07 3731949.40 Worker 0.05 1.45E-03 1.23E-02 249 426594.07 3731949.40 Worker 0.04 1.35E-03 1.14E-02 250 426619.07 3731949.40 Worker 0.04 1.26E-03 1.09E-02 251 426644.07 3731949.40 Worker 0.04 1.17E-03 1.05E-02 252 426669.07 3731949.40 Worker 0.04 1.09E-03 9.91E-03 253 426694.07 3731949.40 Worker 0.03 1.02E-03 9.31E-03 254 426719.07 3731949.40 Worker 0.03 9.58E-04 8.91E-03 255 426744.07 3731949.40 Worker 0.03 9.00E-04 8.45E-03 256 426769.07 3731949.40 Worker 0.03 8.48E-04 7.91E-03 257 426794.07 3731949.40 Worker 0.03 8.01E-04 7.51E-03 258 426819.07 3731949.40 Worker 0.02 7.58E-04 7.20E-03 259 426844.07 3731949.40 Worker 0.02 7.18E-04 6.86E-03 260 426144.07 3731974.40 Worker 0.13 3.98E-03 2.59E-02 261 426169.07 3731974.40 Worker 0.13 4.03E-03 2.65E-02 262 426194.07 3731974.40 Worker 0.13 4.02E-03 2.82E-02 263 426219.07 3731974.40 Worker 0.13 3.98E-03 2.65E-02 264 426244.07 3731974.40 Worker 0.13 3.90E-03 2.70E-02 265 426269.07 3731974.40 Worker 0.12 3.77E-03 2.64E-02 266 426294.07 3731974.40 Worker 0.12 3.61E-03 2.51E-02 267 426319.07 3731974.40 Worker 0.11 3.42E-03 2.49E-02 268 426344.07 3731974.40 Worker 0.10 3.22E-03 2.39E-02 269 426394.07 3731974.40 Worker 0.09 2.89E-03 2.05E-02 270 426419.07 3731974.40 Worker 0.08 2.60E-03 1.93E-02 271 426444.07 3731974.40 Worker 0.08 2.37E-03 1.78E-02 272 426469.07 3731974.40 Worker 0.07 2.17E-03 1.68E-02 273 426494.07 3731974.40 Worker 0.06 1.99E-03 1.59E-02 274 426519.07 3731974.40 Worker 0.06 1.82E-03 1.50E-02 275 426544.07 3731974.40 Worker 0.05 1.68E-03 1.37E-02 276 426569.07 3731974.40 Worker 0.05 1.55E-03 1.27E-02 277 426594.07 3731974.40 Worker 0.05 1.43E-03 1.22E-02 278 426619.07 3731974.40 Worker 0.04 1.33E-03 1.16E-02 279 426644.07 3731974.40 Worker 0.04 1.23E-03 1.07E-02 280 426669.07 3731974.40 Worker 0.04 1.15E-03 1.02E-02 Page 4 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Lancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 281 426694.07 3731974.40 Worker 0.03 1.07E-03 9.67E-03 282 426719.07 3731974.40 Worker 0.03 1.00E-03 9.02E-03 283 426744.07 3731974.40 Worker 0.03 9.39E-04 8.52E-03 284 426769.07 3731974.40 Worker 0.03 8.83E-04 8.13E-03 285 426794.07 3731974.40 Worker 0.03 8.33E-04 7.71E-03 286 426819.07 3731974.40 Worker 0.03 7.86E-04 7.33E-03 287 426844.07 3731974.40 Worker 0.02 7.44E-04 7.02E-03 288 426869.07 3731974.40 Worker 0.02 7.03E-04 6.69E-03 289 425569.07 3731999.40 Worker 0.03 7.63E-04 6.91E-03 290 425594.07 3731999.40 Worker 0.03 8.10E-04 7.28E-03 291 425619.07 3731999.40 Worker 0.03 8.62E-04 7.70E-03 292 425644.07 3731999.40 Worker 0.03 9.21E-04 8.17E-03 293 425669.07 3731999.40 Worker 0.03 9.86E-04 8.61E-03 294 425694.07 3731999.40 Worker 0.04 1.06E-03 8.98E-03 295 425719.07 3731999.40 Worker 0.04 1.14E-03 9.46E-03 296 426119.07 3731999.40 Worker 0.15 4.52E-03 2.71E-02 297 426144.07 3731999.40 Worker 0.15 4.68E-03 2.91E-02 298 426169.07 3731999.40 Worker 0.16 4.85E-03 2.97E-02 299 426194.07 3731999.40 Worker 0.16 4.85E-03 3.26E-02 300 426219.07 3731999.40 Worker 0.15 4.80E-03 3.07E-02 301 426244.07 3731999.40 Worker 0.15 4.68E-03 3.10E-02 302 426269.07 3731999.40 Worker 0.14 4.50E-03 3.01E-02 303 426294.07 3731999.40 Worker 0.14 4.27E-03 2.92E-02 304 426319.07 3731999.40 Worker 0.13 4.01E-03 2.77E-02 305 426344.07 3731999.40 Worker 0.12 3.76E-03 2.68E-02 306 426369.07 3731999.40 Worker 0.12 3.62E-03 2.43E-02 307 426394.07 3731999.40 Worker 0.10 3.19E-03 2.27E-02 308 426419.07 3731999.40 Worker 0.09 2.87E-03 2.06E-02 309 426444.07 3731999.40 Worker 0.08 2.60E-03 1.94E-02 310 426469.07 3731999.40 Worker 0.08 2.36E-03 1.83E-02 311 426494.07 3731999.40 Worker 0.07 2.15E-03 1.70E-02 312 426519.07 3731999.40 Worker 0.06 1.96E-03 1.54E-02 313 426544.07 3731999.40 Worker 0.06 1.79E-03 1.44E-02 314 426569.07 3731999.40 Worker 0.05 1.65E-03 1.37E-02 315 426594.07 3731999.40 Worker 0.05 1.52E-03 1.27E-02 316 426619.07 3731999.40 Worker 0.05 1.40E-03 1.20E-02 317 426644.07 3731999.40 Worker 0.04 1.30E-03 1.12E-02 318 426669.07 3731999.40 Worker 0.04 1.20E-03 1.04E-02 319 426694.07 3731999.40 Worker 0.04 1.12E-03 9.79E-03 320 426719.07 3731999.40 Worker 0.03 1.05E-03 9.29E-03 321 426744.07 3731999.40 Worker 0.03 9.82E-04 8.78E-03 322 426769.07 3731999.40 Worker 0.03 9.22E-04 8.32E-03 323 426794.07 3731999.40 Worker 0.03 8.67E-04 7.93E-03 324 426819.07 3731999.40 Worker 0.03 8.18E-04 7.50E-03 325 426844.07 3731999.40 Worker 0.03 7.73E-04 7.14E-03 326 426869.07 3731999.40 Worker 0.02 7.31E-04 6.82E-03 327 425519.07 3732024.40 Worker 0.02 6.90E-04 6.32E-03 328 425544.07 3732024.40 Worker 0.03 7.31E-04 6.59E-03 329 425569.07 3732024.40 Worker 0.03 7.76E-04 6.93E-03 330 425594.07 3732024.40 Worker 0.03 8.26E-04 7.30E-03 331 425619.07 3732024.40 Worker 0.03 8.81E-04 7.72E-03 332 425644.07 3732024.40 Worker 0.03 9.43E-04 8.20E-03 333 425669.07 3732024.40 Worker 0.04 1.01E-03 8.70E-03 334 425694.07 3732024.40 Worker 0.04 1.09E-03 9.30E-03 335 425719.07 3732024.40 Worker 0.04 1.17E-03 9.88E-03 336 425744.07 3732024.40 Worker 0.04 1.26E-03 1.04E-02 337 425769.07 3732024.40 Worker 0.05 1.37E-03 1.10E-02 338 426069.07 3732024.40 Worker 0.15 4.59E-03 2.81E-02 339 426094.07 3732024.40 Worker 0.17 5.05E-03 3.00E-02 340 426119.07 3732024.40 Worker 0.18 5.47E-03 3.21E-02 341 426144.07 3732024.40 Worker 0.18 5.65E-03 3.31E-02 342 426169.07 3732024.40 Worker 0.19 5.91E-03 3.33E-02 343 426194.07 3732024.40 Worker 0.19 6.00E-03 3.83E-02 344 426219.07 3732024.40 Worker 0.19 5.92E-03 3.62E-02 345 426244.07 3732024.40 Worker 0.18 5.75E-03 3.61E-02 346 426269.07 3732024.40 Worker 0.18 5.49E-03 3.46E-02 347 426294.07 3732024.40 Worker 0.16 5.14E-03 3.41E-02 348 426319.07 3732024.40 Worker 0.15 4.76E-03 3.25E-02 349 426369.07 3732024.40 Worker 0.13 4.02E-03 2.70E-02 350 426394.07 3732024.40 Worker 0.11 3.57E-03 2.44E-02 Page 5 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 351 426419.07 3732024.40 Worker 0.10 3.19E-03 2.27E-02 352 426444.07 3732024.40 Worker 0.09 2.86E-03 2.14E-02 353 426469.07 3732024.40 Worker 0.08 2.57E-03 1.93E-02 354 1 426494.07 3732024.40 Worker 0.07 2.32E-03 1.74E-02 355 426519.07 3732024.40 Worker 0.07 2.11E-03 1.65E-02 356 426544.07 3732024.40 Worker 0.06 1.92E-03 1.54E-02 357 426569.07 3732024.40 Worker 0.06 1.75E-03 1.42E-02 358 426594.07 3732024.40 Worker 0.05 1.61E-03 1.33E-02 359 426619.07 3732024.40 Worker 0.05 1.48E-03 1.22E-02 360 426644.07 3732024.40 Worker 0.04 1.37E-03 1.14E-02 361 426669.07 3732024.40 Worker 0.04 1.27E-03 1.07E-02 362 426694.07 3732024.40 Worker 0.04 1.18E-03 1.01E-02 363 426719.07 3732024.40 Worker 0.04 1.10E-03 9.58E-03 364 426744.07 3732024.40 Worker 0.03 1.03E-03 9.03E-03 365 426769.07 3732024.40 Residential 0.27 9.63E-04 8.52E-03 366 426794.07 3732024.40 Residential 0.25 9.03E-04 8.08E-03 367 426819.07 3732024.40 Residential 0.24 8.51E-04 7.65E-03 368 426844.07 3732024.40 Worker 0.03 8.04E-04 7.25E-03 369 426869.07 3732024.40 Worker 0.02 7.61E-04 6.94E-03 370 425494.07 3732049.40 Worker 0.02 6.61E-04 6.17E-03 371 425519.07 3732049.40 Worker 0.03 7.00E-04 6.44E-03 372 425544.07 3732049.40 Worker 0.03 7.42E-04 6.74E-03 373 425569.07 3732049.40 Worker 0.03 7.89E-04 7.06E-03 374 425594.07 3732049.40 Worker 0.03 8.41E-04 7.42E-03 375 425619.07 3732049.40 Worker 0.03 8.99E-04 7.79E-03 376 425644.07 3732049.40 Worker 0.03 9.63E-04 8.22E-03 377 425669.07 3732049.40 Worker 0.04 1.03E-03 8.73E-03 378 425694.07 3732049.40 Worker 0.04 1.11E-03 9.29E-03 379 1 425719.07 3732049.40 Worker 0.04 1.20E-03 9.92E-03 380 425744.07 3732049.40 Worker 0.05 1.30E-03 1.06E-02 381 425769.07 3732049.40 Worker 0.05 1.41E-03 1.15E-02 382 425794.07 3732049.40 Worker 0.05 1.54E-03 1.22E-02 383 426044.07 3732049.40 Worker 0.15 4.69E-03 2.83E-02 384 426069.07 3732049.40 Worker 0.17 5.32E-03 3.12E-02 385 426094.07 3732049.40 Worker 0.20 6.00E-03 3.45E-02 386 426119.07 3732049.40 Worker 0.22 6.64E-03 3.69E-02 387 426144.07 3732049.40 Worker 0.23 7.18E-03 3.93E-02 388 426169.07 3732049.40 Worker 0.23 7.20E-03 3.83E-02 389 426194.07 3732049.40 Worker 0.24 7.56E-03 4.50E-02 390 426219.07 3732049.40 Worker 0.24 7.53E-03 4.37E-02 391 426244.07 3732049.40 Worker 0.23 7.28E-03 4.29E-02 392 426269.07 3732049.40 Worker 0.22 6.84E-03 4.11E-02 393 426294.07 3732049.40 Worker 0.20 6.30E-03 3.93E-02 394 426344.07 3732049.40 Worker 0.17 5.24E-03 3.29E-02 395 426369.07 3732049.40 Worker 0.15 4.57E-03 2.95E-02 396 426394.07 3732049.40 Worker 0.13 4.02E-03 2.72E-02 397 426419.07 3732049.40 Worker 0.11 3.55E-03 2.53E-02 398 426444.07 3732049.40 Worker 0.10 3.15E-03 2.24E-02 399 426469.07 3732049.40 Worker 0.09 2.81E-03 2.05E-02 400 426494.07 3732049.40 Worker 0.08 2.51E-03 1.90E-02 401 426519.07 3732049.40 Worker 0.07 2.27E-03 1.73E-02 402 426544.07 3732049.40 Worker 0.07 2.05E-03 1.60E-02 403 426569.07 3732049.40 Worker 0.06 1.87E-03 1.46E-02 404 426594.07 3732049.40 Worker 0.06 1.71E-03 1.35E-02 405 426619.07 3732049.40 Worker 0.05 1.57E-03 1.26E-02 406 426644.07 3732049.40 Worker 0.05 1.45E-03 1.18E-02 407 426669.07 3732049.40 Worker 0.04 1.35E-03 1.11E-02 408 426694.07 3732049.40 Worker 0.04 1.25E-03 1.05E-02 409 426719.07 3732049.40 Worker 0.04 1.16E-03 9.88E-03 410 426744.07 3732049.40 Residential 0.30 1.08E-03 9.24E-03 411 426769.07 3732049.40 Residential 0.28 1.01E-03 8.67E-03 412 426794.07 3732049.40 Residential 0.26 9.45E-04 8.24E-03 413 426819.07 3732049.40 Residential 0.25 8.89E-04 7.81E-03 414 426844.07 3732049.40 Residential 0.23 8.39E-04 7.40E-03 415 426869.07 3732049.40 Worker 0.03 7.93E-04 7.04E-03 416 426894.07 3732049.40 Worker 0.02 7.50E-04 6.76E-03 417 425494.07 3732074.40 Worker 0.02 6.69E-04 6.17E-03 418 425519.07 3732074.40 Worker 0.03 7.09E-04 6.46E-03 419 425544.07 3732074.40 Worker 0.03 7.52E-04 6.81E-03 420 425569.07 3732074.40 Worker 0.03 8.02E-04 7.22E-03 Page 6 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 421 425594.07 3732074.40 Worker 0.03 8.54E-04 7.59E-03 422 425619.07 3732074.40 Worker 0.03 9.15E-04 7.99E-03 423 425644.07 3732074.40 Worker 0.04 9.81E-04 8.42E-03 424 425669.07 3732074.40 Worker 0.04 1.05E-03 8.89E-03 425 425694.07 3732074.40 Worker 0.04 1.14E-03 9.41E-03 426 425719.07 3732074.40 Worker 0.04 1.23E-03 9.94E-03 427 425744.07 3732074.40 Worker 0.05 1.33E-03 1.07E-02 428 425769.07 3732074.40 Worker 0.05 1.45E-03 1.15E-02 429 425794.07 3732074.40 Worker 0.05 1.59E-03 1.24E-02 430 425819.07 3732074.40 Worker 0.06 1.75E-03 1.35E-02 431 426019.07 3732074.40 Worker 0.15 4.59E-03 2.73E-02 432 426044.07 3732074.40 Worker 0.17 5.33E-03 3.10E-02 433 426069.07 3732074.40 Worker 0.20 6.18E-03 3.49E-02 434 426094.07 3732074.40 Worker 0.23 7.17E-03 3.90E-02 435 426119.07 3732074.40 Worker 0.27 8.21E-03 4.38E-02 436 426144.07 3732074.40 Worker 0.30 9.14E-03 4.75E-02 437 426169.07 3732074.40 Worker 0.32 9.80E-03 5.16E-02 438 426194.07 3732074.40 Worker 0.31 9.51E-03 5.07E-02 439 426219.07 3732074.40 Worker 0.32 9.90E-03 5.37E-02 440 426244.07 3732074.40 Worker 0.30 9.51E-03 5.31E-02 441 426269.07 3732074.40 Worker 0.28 8.79E-03 5.08E-02 442 426294.07 3732074.40 Worker 0.25 7.95E-03 4.80E-02 443 426319.07 3732074.40 Worker 0.23 7.13E-03 4.20E-02 444 426344.07 3732074.40 Worker 0.20 6.09E-03 3.72E-02 445 426369.07 3732074.40 Worker 0.17 5.25E-03 3.35E-02 446 426394.07 3732074.40 Worker 0.15 4.54E-03 3.07E-02 447 426419.07 3732074.40 Worker 0.13 3.96E-03 2.65E-02 448 426444.07 3732074.40 Worker 0.11 3.47E-03 2.44E-02 449 426469.07 3732074.40 Worker 0.10 3.06E-03 2.19E-02 450 426494.07 3732074.40 Worker 0.09 2.72E-03 2.00E-02 451 426519.07 3732074.40 Worker 0.08 2.44E-03 1.79E-02 452 426544.07 3732074.40 Worker 0.07 2.20E-03 1.65E-02 453 426569.07 3732074.40 Worker 0.06 1.99E-03 1.51E-02 454 426594.07 3732074.40 Worker 0.06 1.82E-03 1.40E-02 455 426619.07 3732074.40 Worker 0.05 1.67E-03 1.30E-02 456 426644.07 3732074.40 Worker 0.05 1.55E-03 1.22E-02 457 426669.07 3732074.40 Worker 0.05 1.46E-03 1.15E-02 458 426719.07 3732074.40 Residential 0.35 1.25E-03 1.02E-02 459 426744.07 3732074.40 Residential 0.32 1.14E-03 9.42E-03 460 426769.07 3732074.40 Residential 0.30 1.06E-03 8.87E-03 461 426794.07 3732074.40 Residential 0.28 9.94E-04 8.44E-03 462 426819.07 3732074.40 Residential 0.26 9.32E-04 8.01E-03 463 426844.07 3732074.40 Residential 0.25 8.78E-04 7.60E-03 464 426869.07 3732074.40 Residential 0.23 8.29E-04 7.20E-03 465 426894.07 3732074.40 Worker 0.03 7.84E-04 6.82E-03 466 425469.07 3732099.40 Worker 0.02 6.39E-04 6.11E-03 467 425494.07 3732099.40 Worker 0.02 6.76E-04 6.38E-03 468 425519.07 3732099.40 Worker 0.03 7.16E-04 6.64E-03 469 425544.07 3732099.40 Worker 0.03 7.62E-04 6.96E-03 470 425569.07 3732099.40 Worker 0.03 7.70E-04 8.23E-03 471 425594.07 3732099.40 Worker 0.03 8.25E-04 8.62E-03 472 425619.07 3732099.40 Worker 0.04 9.29E-04 8.05E-03 473 425644.07 3732099.40 Worker 0.04 9.98E-04 8.53E-03 474 425669.07 3732099.40 Worker 0.04 1.07E-03 9.09E-03 475 425694.07 3732099.40 Worker 0.04 1.16E-03 9.67E-03 476 425719.07 3732099.40 Worker 0.05 1.26E-03 1.03E-02 477 425744.07 3732099.40 Worker 0.05 1.36E-03 1.09E-02 478 425769.07 3732099.40 Worker 0.05 1.49E-03 1.17E-02 479 425794.07 3732099.40 Worker 0.06 1.63E-03 1.24E-02 480 425819.07 3732099.40 Worker 0.06 1.80E-03 1.35E-02 481 425994.07 3732099.40 Worker 0.14 4.35E-03 2.73E-02 482 426019.07 3732099.40 Worker 0.17 5.11E-03 3.05E-02 483 426044.07 3732099.40 Worker 0.20 6.02E-03 3.39E-02 484 426069.07 3732099.40 Worker 0.23 7.20E-03 3.90E-02 485 426094.07 3732099.40 Worker 0.28 8.62E-03 4.51E-02 486 426119.07 3732099.40 Worker 0.33 1.03E-02 5.15E-02 487 426144.07 3732099.40 Worker 0.39 1.20E-02 5.75E-02 488 426169.07 3732099.40 Worker 0.43 1.33E-02 6.43E-02 489 426194.07 3732099.40 Worker 0.45 1.40E-02 6.95E-02 490 426219.07 3732099.40 Worker 0.42 1.29E-02 6.27E-02 Page 7 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 491 426244.07 3732099.40 Worker 0.42 1.30E-02 6.71E-02 492 426269.07 3732099.40 Worker 0.38 1.17E-02 6.33E-02 493 426294.07 3732099.40 Worker 0.33 1.03E-02 5.60E-02 494 426319.07 3732099.40 Worker 0.27 8.59E-03 4.89E-02 495 426344.07 3732099.40 Worker 0.23 7.18E-03 4.27E-02 496 426369.07 3732099.40 Worker 0.19 6.04E-03 3.79E-02 497 426394.07 3732099.40 Worker 0.16 5.15E-03 3.27E-02 498 426419.07 3732099.40 Worker 0.14 4.42E-03 2.93E-02 499 426444.07 3732099.40 Worker 0.12 3.83E-03 2.60E-02 500 426469.07 3732099.40 Worker 0.11 3.35E-03 2.29E-02 501 426494.07 3732099.40 Worker 0.10 2.96E-03 2.07E-02 502 426519.07 3732099.40 Worker 0.09 2.64E-03 1.87E-02 503 426544.07 3732099.40 Worker 0.08 2.36E-03 1.71E-02 504 426569.07 3732099.40 Worker 0.07 2.14E-03 1.57E-02 505 426594.07 3732099.40 Worker 0.06 1.95E-03 1.45E-02 506 426619.07 3732099.40 Worker 0.06 1.80E-03 1.35E-02 507 426644.07 3732099.40 Worker 0.06 1.69E-03 1.27E-02 508 426694.07 3732099.40 Residential 0.48 1.58E-03 1.11E-02 509 426719.07 3732099.40 Residential 0.39 1.35E-03 1.04E-02 510 426744.07 3732099.40 Residential 0.35 1.22E-03 9.67E-03 511 426769.07 3732099.40 Residential 0.32 1.13E-03 9.06E-03 512 426794.07 3732099.40 Residential 0.30 1.05E-03 8.51E-03 513 426819.07 3732099.40 Residential 0.28 9.81E-04 8.08E-03 514 426844.07 3732099.40 Residential 0.26 9.21E-04 7.66E-03 515 426869.07 3732099.40 Residential 0.24 8.68E-04 7.28E-03 516 426894.07 3732099.40 Worker 0.03 8.20E-04 6.91E-03 517 425469.07 3732124.40 Worker 0.02 6.44E-04 6.09E-03 518 425494.07 3732124.40 Worker 0.02 6.82E-04 6.41E-03 519 425519.07 3732124.40 Worker 0.03 7.24E-04 6.75E-03 520 425544.07 3732124.40 Worker 0.03 7.70E-04 7.11E-03 521 425569.07 3732124.40 Worker 0.03 8.20E-04 7.50E-03 522 425594.07- 3732124.40 Worker 0.03 8.42E-04 8.74E-03 523 425619.07 3732124.40 Worker 0.04 9.37E-04 8.57E-03 524 425644.07 3732124.40 Worker 0.04 1.01E-03 8.84E-03 525 425669.07 3732124.40 Worker 0.04 1.09E-03 9.30E-03 526 425694.07 3732124.40 Worker 0.04 1.18E-03 9.83E-03 527 425719.07 3732124.40 Worker 0.05 1.28E-03 1.04E-02 528 425744.07 3732124.40 Worker 0.05 1.39E-03 1.10E-02 529 425769.07 3732124.40 Worker 0.05 1.52E-03 1.19E-02 530 425794.07 3732124.40 Worker 0.06 1.67E-03 1.29E-02 531 425819.07 3732124.40 Worker 0.06 1.85E-03 1.39E-02 532 425844.07 3732124.40 Worker 0.07 2.06E-03 1.50E-02 533 425969.07 3732124.40 Worker 0.13 3.98E-03 2.57E-02 534 425994.07 3732124.40 Worker 0.15 4.69E-03 2.86E-02 535 426019.07 3732124.40 Worker 0.18 5.60E-03 3.32E-02 536 426044.07 3732124.40 Worker 0.22 6.76E-03 3.77E-02 537 1 426069.07 3732124.40 Worker 0.27 8.29E-03 4.34E-02 538 426094.07 3732124.40 Worker 0.33 1.03E-02 5.10E-02 539 426119.07 3732124.40 Worker 0.42 1.30E-02 6.16E-02 540 426144.07 3732124.40 Worker 0.52 1.62E-02 7.25E-02 541 426169.07 3732124.40 Worker 0.62 1.91E-02 8.16E-02 542 426194.07 3732124.40 Worker 0.68 2.10E-02 8.98E-02 543 426219.07 3732124.40 Worker 0.67 2.09E-02 9.41E-02 544 426244.07 3732124.40 Worker 0.61 1.90E-02 8.66E-02 545 426269.07 3732124.40 Worker 0.53 1.65E-02 8.20E-02 546 426294.07 3732124.40 Worker 0.43 1.33E-02 6.84E-02 547 426319.07 3732124.40 Worker 0.34 1.06E-02 5.77E-02 548 426344.07 3732124.40 Worker 0.27 8.54E-03 4.84E-02 549 426369.07 3732124.40 Worker 0.22 7.00E-03 4.19E-02 550 426394.07 3732124.40 Worker 0.19 5.84E-03 3.61E-02 551 426419.07 3732124.40 Worker 0.16 4.95E-03 3.08E-02 552 426444.07 3732124.40 Worker 0.14 4.24E-03 2.71E-02 553 426469.07 3732124.40 Worker 0.12 3.69E-03 2.41E-02 554 426494.07 3732124.40 Worker 0.10 3.23E-03 2.16E-02 555 426519.07 3732124.40 Worker 0.09 2.87E-03 1.94E-02 556 426544.07 3732124.40 Worker 0.08 2.56E-03 1.77E-02 557 426569.07 3732124.40 Worker 0.08 2.32E-03 1.62E-02 558 426594.07 3732124.40 Worker 0.07 2.12E-03 1.51E-02 559 426619.07 3732124.40 Worker 0.07 1.98E-03 1.42E-02 560 426669.07 1 3732124.40 Residential 0.54 1.77E-03 1.20E-02 Page 8 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (Ina million) Chronic Hazard Index Acute Hazard Index 561 426694.07 3732124.40 Residential 0.46 1.57E-03 1.11E-02 562 426719.07 3732124.40 Residential 0.41 1.42E-03 1.04E-02 563 426744.07 3732124.40 Residential 0.37 1.30E-03 9.75E-03 564 426769.07 3732124.40 Residential 0.34 1.19E-03 9.15E-03 565 426794.07 3732124.40 Residential 0.32 1.11E-03 8.65E-03 566 426819.07 3732124.40 Residential 0.29 1.03E-03 8.20E-03 567 426844.07 3732124.40 Residential 0.28 9.69E-04 7.77E-03 568 426869.07 3732124.40 Residential 0.26 9.13E-04 7.39E-03 569 425469.07 3732149.40 Worker 0.02 6.49E-04 6.03E-03 570 425494.07 3732149.40 Worker 0.02 6.88E-04 6.34E-03 571 425519.07 3732149.40 Worker 0.03 7.30E-04 6.67E-03 572 425544.07 3732149.40 Worker 0.03 7.78E-04 7.04E-03 573 425569.07 3732149.40 Worker 0.03 8.30E-04 7.44E-03 574 425594.07 3732149.40 Worker 0.03 8.85E-04 7.97E-03 575 425619.07 3732149.40 Worker 0.04 9.50E-04 8.52E-03 576 425644.07 3732149.40 Worker 0.05 1.03E-03 8.88E-03 577 425669.07 3732149.40 Worker 0.05 1.11E-03 9.45E-03 578 425694.07 3732149.40 Worker 0.05 1.20E-03 1.01E-02 579 425719.07 3732149.40 Worker 0.05 1.30E-03 1.08E-02 580 425744.07 3732149.40 Worker 0.05 1.42E-03 1.15E-02 581 425769.07 3732149.40 Worker 0.06 1.55E-03 1.24E-02 582 425794.07 3732149.40 Worker 0.06 1.71E-03 1.33E-02 583 425819.07 3732149.40 Worker 0.07 1.89E-03 1.42E-02 584 425844.07 3732149.40 Worker 0.07 2.12E-03 1.55E-02 585 425869.07 3732149.40 Worker 0.08 2.38E-03 1.69E-02 586 425944.07 3732149.40 Worker 0.12 3.58E-03 2.32E-02 587 425969.07 3732149.40 Worker 0.14 4.20E-03 2.60E-02 588 425994.07 3732149.40 Worker 0.16 4.99E-03 2.99E-02 589 426019.07 3732149.40 Worker 0.20 6.03E-03 3.51E-02 590 426044.07 3732149.40 Worker 0.24 7.45E-03 4.07E-02 591 426069.07 3732149.40 Worker 0.31 9.45E-03 4.91E-02 592 426094.07 3732149.40 Worker 0.39 1.22E-02 5.81E-02 593 426119.07 3732149.40 Worker 0.52 1.63E-02 7.05E-02 594 426144.07 3732149.40 Worker 0.71 2.22E-02 8.89E-02 595 426169.07 3732149.40 Worker 0.94 2.93E-02 1.08E-01 596 426194.07 3732149.40 Worker 1.13 3.52E-02 1.29E-01 597 426244.07 3732149.40 Worker 1.00 3.08E-02 1.28E-01 598 426269.07 3732149.40 Worker 0.73 2.26E-02 9.59E-02 599 426319.07 3732149.40 Worker 0.43 1.33E-02 6.68E-02 600 426344.07 3732149.40 Worker 0.33 1.03E-02 5.51E-02 601 426369.07 3732149.40 Worker 0.26 8.20E-03 4.51E-02 602 426394.07 3732149.40 Worker 0.22 6.70E-03 3.81E-02 603 426419.07 3732149.40 Worker 0.18 5.59E-03 3.28E-02 604 426444.07 3732149.40 Worker 0.15 4.75E-03 2.85E-02 605 426469.07 3732149.40 Worker 0.13 4.09E-03 2.53E-02 606 426494.07 3732149.40 Worker 0.12 3.57E-03 2.27E-02 607 426519.07 3732149.40 Worker 0.10 3.15E-03 2.05E-02 608 426544.07 3732149.40 Worker 0.09 2.81E-03 1.84E-02 609 426569.07 3732149.40 Worker 0.08 2.54E-03 1.68E-02 610 426594.07 3732149.40 Worker 0.08 2.37E-03 1.57E-02 611 426619.07 3732149.40 Residential 0.75 2.39E-03 1.45E-02 612 426644.07 3732149.40 Residential 0.61 2.02E-03 1.31E-02 613 426669.07 3732149.40 Residential 0.53 1.80E-03 1.22E-02 614 426694.07 3732149.40 Residential 0.48 1.64E-03 1.13E-02 615 426719.07 3732149.40 Residential 0.43 1.49E-03 1.06E-02 616 426744.07 3732149.40 Residential 0.40 1.37E-03 9.88E-03 617 426769.07 3732149.40 Residential 0.36 1.27E-03 9.24E-03 618 426794.07 3732149.40 Residential 0.34 1.17E-03 8.65E-03 619 426819.07 3732149.40 Residential 0.31 1.09E-03 8.15E-03 620 426844.07 3732149.40 Residential 0.29 1.02E-03 7.70E-03 621 426869.07 3732149.40 Residential 0.27 9.61E-04 7.30E-03 622 425469.07 3732174.40 Worker 0.02 6.53E-04 6.13E-03 623 425494.07 3732174.40 Worker 0.03 6.93E-04 6.42E-03 624 425519.07 3732174.40 Worker 0.03 7.36E-04 6.74E-03 625 425544.07 3732174.40 Worker 0.03 7.84E-04 7.09E-03 626 425569.07 3732174.40 Worker 0.03 8.37E-04 7.47E-03 627 425594.07 3732174.40 Worker 0.04 8.94E-04 7.87E-03 628 425619.07 3732174.40 Worker 0.04 9.64E-04 8.36E-03 629 425669.07 3732174.40 Worker 0.06 1.14E-03 9.40E-03 630 425694.07 3732174.40 Worker 0.05 1.22E-03 9.95E-03 Page 9 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 631 425719.07 3732174.40 Worker 0.05 1.32E-03 1.06E-02 632 425744.07 3732174.40 Worker 0.06 1.44E-03 1.14E-02 633 425769.07 3732174.40 Worker 0.06 1.58E-03 1.23E-02 634 425794.07 3732174.40 Worker 0.06 1.74E-03 1.33E-02 635 425819.07 3732174.40 worker 0.07 1.93E-03 1.44E-02 636 425844.07 3732174.40 Worker 0.08 2.16E-03 1.59E-02 637 425869.07 3732174.40 Worker 0.08 2.44E-03 1.76E-02 638 425894.07 3732174.40 Worker 0.09 2.78E-03 1.95E-02 639 425919.07 3732174.40 Worker 0.11 3.19E-03 2.17E-02 640 425944.07 3732174.40 Worker 0.12 3.71E-03 2.42E-02 641 425969.07 3732174.40 Worker 0.15 4.38E-03 2.72E-02 642 425994.07 3732174.40 Worker 0.17 5.25E-03 3.11E-02 643 426019.07 3732174.40 Worker 0.21 6.42E-03 3.64E-02 644 426044.07 3732174.40 Worker 0.26 8.10E-03 4.29E-02 645 426069.07 3732174.40 Worker 0.34 1.05E-02 5.25E-02 646 426094.07 3732174.40 Worker 0.45 1.41E-02 6.55E-02 647 426119.07 3732174.40 Worker 0.64 1.99E-02 8.32E-02 648 426144.07 3732174.40 Worker 0.97 3.03E-02 1.09E-01 649 426169.07 3732174.40 Worker 1.53 4.78E-02 1.49E-01 650 426244.07 3732174.40 Worker 1.97 5.94E-02 2.03E-01 651 426269.07 3732174.40 Worker 1.17 3.58E-02 1.32E-01 652 426294.07 3732174.40 Worker 0.78 2.41E-02 9.93E-02 653 426344.07 3732174.40 Worker 0.41 1.27E-02 6.01E-02 654 426369.07 3732174.40 Worker 0.32 9.84E-03 4.88E-02 655 426394.07 3732174.40 Worker 0.25 7.85E-03 4.10E-02 656 426419.07 3732174.40 Worker 0.21 6.45E-03 3.50E-02 657 426444.07 3732174.40 Worker 0.18 5.41E-03 2.99E-02 658 426469.07 3732174.40 Worker 0.15 4.62E-03 2.62E-02 659 426494.07 3732174.40 Worker 0.13 4.00E-03 2.34E-02 660 426519.07 3732174.40 Worker 0.12 3.51E-03 2.10E-02 661 426544.07 3732174.40 Worker 0.10 3.12E-03 1.90E-02 662 426594.07 3732174.40 Residential 0.84 2.75E-03 1.58E-02 663 426619.07 3732174.40 Residential 0.70 2.36E-03 1.42E-02 664 426644.07 3732174.40 Residential 0.62 2.10E-03 1.30E-02 665 426669.07 3732174.40 Residential 0.56 1.90E-03 1.21E-02 666 426694.07 3732174.40 Residential 0.50 1.73E-03 1.12E-02 667 426719.07 3732174.40 Residential 0.46 1.58E-03 1.04E-02 668 426744.07 3732174.40 Residential 0.42 1.46E-03 9.75E-03 669 426769.07 3732174.40 Residential 0.39 1.34E-03 9.16E-03 670 426794.07 3732174.40 Residential 0.36 1.24E-03 8.64E-03 671 426819.07 3732174.40 Residential 0.33 1.16E-03 8.18E-03 672 426844.07 3732174.40 Residential 0.31 1.08E-03 7.75E-03 673 426869.07 3732174.40 Residential 0.29 1.01E-03 7.36E-03 674 425469.07 3732199.40 Worker 0.02 6.57E-04 6.14E-03 675 425494.07 3732199.40 Worker 0.03 6.97E-04 6.44E-03 676 425519.07 3732199.40 Worker 0.03 7.40E-04 6.77E-03 677 425544.07 3732199.40 Worker 0.03 7.88E-04 7.12E-03 678 425569.07 3732199.40 Worker 0.03 8.40E-04 7.50E-03 679 425594.07 3732199.40 Worker 0.04 9.01E-04 7.93E-03 680 425619.07 3732199.40 Worker 0.04 9.73E-04 8.42E-03 681 425644.07 3732199.40 Residential 0.53 1.08E-03 9.03E-03 682 425694.07 3732199.40 Worker 0.07 1.26E-03 1.02E-02 683 425719.07 3732199.40 Worker 0.06 1.35E-03 1.08E-02 684 425744.07 3732199.40 Worker 0.06 1.46E-03 1.16E-02 685 425769.07 3732199.40 Worker 0.06 1.60E-03 1.25E-02 686 425794.07 3732199.40 Worker 0.07 1.77E-03 1.35E-02 687 425819.07 3732199.40 Worker 0.07 1.96E-03 1.46E-02 688 425844.07 3732199.40 Worker 0.08 2.20E-03 1.59E-02 689 425869.07 3732199.40 Worker 0.09 2.48E-03 1.75E-02 690 425894.07 3732199.40 Worker 0.10 2.83E-03 1.94E-02 691 425919.07 3732199.40 Worker 0.11 3.26E-03 2.16E-02 692 425944.07 3732199.40 Worker 0.13 3.81E-03 2.43E-02 693 425969.07 3732199.40 Worker 0.15 4.51E-03 2.76E-02 694 425994.07 3732199.40 Worker 0.18 5.45E-03 3.20E-02 695 426019.07 3732199.40 Worker 0.22 6.75E-03 3.79E-02 696 426044.07 3732199.40 Worker 0.28 8.61E-03 4.60E-02 697 426069.07 3732199.40 Worker 0.37 1.14E-02 5.68E-02 698 426094.07 3732199.40 Worker 0.50 1.56E-02 6.95E-02 699 426119.07 3732199.40 Worker 0.75 2.33E-02 9.28E-02 700 426144.07 3732199.40 Worker 1.25 3.90E-02 1.33E-01 Page 10 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 701 426269.07 3732199.40 Worker 2.19 6.45E-02 1.83E-01 702 426294.07 3732199.40 Worker 1.14 3.40E-02 1.10E-01 703 426319.07 3732199.40 Worker 0.77 2.32E-02 8.59E-02 704 426369.07 3732199.40 Worker 0.40 1.21E-02 5.22E-02 705 426394.07 3732199.40 Worker 0.31 9.43E-03 4.26E-02 706 426419.07 3732199.40 Worker 0.25 7.59E-03 3.55E-02 707 426444.07 3732199.40 Worker 0.21 6.27E-03 3.03E-02 708 426469.07 3732199.40 Worker 0.17 5.28E-03 2.64E-02 709 426494.07 3732199.40 Worker 0.15 4.53E-03 2.34E-02 710 426519.07 3732199.40 Worker 0.13 3.95E-03 2.10E-02 711 426569.07 3732199.40 Residential 0.99 3.28E-03 1.73E-02 712 426594.07 3732199.40 Residential 0.84 2.82E-03 1.56E-02 713 426619.07 3732199.40 Residential 0.74 2.50E-03 1.43E-02 714 426644.07 3732199.40 Residential 0.66 2.24E-03 1.31E-02 715 426669.07 3732199.40 Residential 0.59 2.03E-03 1.21E-02 716 426694.07 3732199.40 Residential 0.54 1.84E-03 1.12E-02 717 426719.07 3732199.40 Residential 0.49 1.68E-03 1.05E-02 718 426744.07 3732199.40 Residential 0.45 1.54E-03 9.92E-03 719 426769.07 3732199.40 Residential 0.41 1.42E-03 9.17E-03 720 426794.07 3732199.40 Residential 0.38 1.32E-03 8.64E-03 721 426819.07 3732199.40 Residential 0.36 1.23E-03 8.15E-03 722 426844.07 3732199.40 Residential 0.33 1.14E-03 7.71E-03 723 425469.07 3732224.40 Worker 0.02 6.60E-04 6.05E-03 724 425494.07 3732224.40 Worker 0.03 7.00E-04 6.35E-03 725 425519.07 3732224.40 Worker 0.03 7.43E-04 6.66E-03 726 425544.07 3732224.40 Worker 0.03 7.92E-04 7.01E-03 727 425569.07 3732224.40 Worker 0.03 8.45E-04 7.39E-03 728 425594.07 3732224.40 Worker 0.04 9.08E-04 7.81E-03 729 425619.07 3732224.40 Worker 0.04 9.79E-04 8.29E-03 730 425644.07 3732224.40 Residential 0.45 1.07E-03 8.83E-03 731 425669.07 3732224.40 Residential 0.70 1.22E-03 9.51E-03 732 425719.07 3732224.40 Worker 0.08 1.39E-03 1.07E-02 733 425744.07 3732224.40 Worker 0.07 1.49E-03 1.15E-02 734 425769.07 3732224.40 Worker 0.07 1.62E-03 1.23E-02 735 425794.07 3732224.40 Worker 0.07 1.79E-03 1.33E-02 736 425819.07 3732224.40 Worker 0.07 1.99E-03 1.45E-02 737 425844.07 3732224.40 Worker 0.08 2.22E-03 1.58E-02 738 425869.07 3732224.40 Worker 0.09 2.51E-03 1.73E-02 739 425894.07 3732224.40 Worker 0.10 2.87E-03 1.92E-02 740 425919.07 3732224.40 Worker 0.11 3.31E-03 2.15E-02 741 425944.07 3732224.40 Worker 0.13 3.87E-03 2.43E-02 742 425969.07 3732224.40 Worker 0.15 4.61E-03 2.78E-02 743 425994.07 3732224.40 Worker 0.19 5.59E-03 3.23E-02 744 426019.07 3732224.40 Worker 0.23 6.96E-03 3.83E-02 745 426044.07 3732224.40 Worker 0.29 8.92E-03 4.61E-02 746 426069.07 3732224.40 Worker 0.39 1.18E-02 5.65E-02 747 426094.07 3732224.40 Worker 0.54 1.67E-02 7.23E-02 748 426119.07 3732224.40 Worker 0.82 2.55E-02 9.77E-02 749 426294.07 3732224.40 Worker 1.85 5.42E-02 1.61E-01 750 426319.07 3732224.40 Worker 1.02 3.01E-02 1.02E-01 751 426344.07 3732224.40 Worker 0.71 2.13E-02 7.61E-02 752 426394.07 3732224.40 Worker 0.38 1.15E-02 4.73E-02 753 426419.07 3732224.40 Worker 0.30 9.02E-03 3.87E-02 754 426444.07 3732224.40 Worker 0.24 7.31E-03 3.22E-02 755 426469.07 3732224.40 Worker 0.20 6.08E-03 2.76E-02 756 426494.07 3732224.40 Worker 0.17 5.17E-03 2.43E-02 757 426544.07 3732224.40 Residential 1.21 4.02E-03 1.93E-02 758 426569.07 3732224.40 Residential 1.02 3.45E-03 1.73E-02 759 426594.07 3732224.40 Residential 0.89 3.02E-03 1.57E-02 760 426619.07 3732224.40 Residential 0.79 2.69E-03 1.44E-02 761 426644.07 3732224.40 Residential 0.71 2.41E-03 1.33E-02 762 426669.07 3732224.40 Residential 0.64 2.17E-03 1.23E-02 763 426694.07 3732224.40 Residential 0.58 1.97E-03 1.14E-02 764 426719.07 3732224.40 Residential 0.53 1.80E-03 1.06E-02 765 426744.07 3732224.40 Residential 0.48 1.64E-03 1.01E-02 766 426769.07 3732224.40 Residential 0.44 1.51E-03 9.36E-03 767 426794.07 3732224.40 Residential 0.41 1.40E-03 8.81E-03 768 426819.07 3732224.40 Residential 0.38 1.30E-03 8.32E- 769 425469.07 3732249.40 Residential 0.20 6.63E-04 6.17E-03 770 425494.07 3732249.40 Residential 0.22 7.02E-04 6.47E-03 Page 11 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 771 425519.07 3732249.40 Worker 0.03 7.48E-04 6.80E-03 772 425544.07 3732249.40 Worker 0.03 7.97E-04 7.15E-03 773 425569.07 3732249.40 Worker 0.03 8.51E-04 7.53E-03 774 425594.07 3732249.40 Residential 0.31 9.14E-04 7.96E-03 775 425619.07 3732249.40 Residential 0.35 9.85E-04 8.43E-03 776 425644.07 3732249.40 Residential 0.41 1.07E-03 8.95E-03 777 425669.07 3732249.40 Residential 0.53 1.17E-03 9.55E-03 778 425744.07 3732249.40 Worker 0.08 1.52E-03 1.17E-02 779 425769.07 3732249.40 Worker 0.07 1.65E-03 1.26E-02 780 425794.07 3732249.40 Worker 0.07 1.81E-03 1.36E-02 781 425819.07 3732249.40 Worker 0.08 2.01E-03 1.48E-02 782 425844.07 3732249.40 Worker 0.08 2.25E-03 1.61E-02 783 425869.07 3732249.40 Worker 0.09 2.54E-03 1.76E-02 784 425894.07 3732249.40 Worker 0.10 2.90E-03 1.95E-02 785 425919.07 3732249.40 Worker 0.12 3.35E-03 2.17E-02 786 425944.07 3732249.40 Worker 0.13 3.93E-03 2.45E-02 787 425969.07 3732249.40 Worker 0.16 4.69E-03 2.81E-02 788 425994.07 3732249.40 Worker 0.19 5.69E-03 3.25E-02 789 426019.07 3732249.40 Worker 0.24 7.08E-03 3.86E-02 790 426044.07 3732249.40 Worker 0.30 9.07E-03 4.65E-02 791 426069.07 3732249.40 Worker 0.40 1.21E-02 5.70E-02 792 426094.07 3732249.40 Worker 0.55 1.69E-02 7.07E-02 793 426319.07 3732249.40 Worker 1.38 4,07E-02 1.00E-01 794 426344.07 3732249.40 Worker 0.85 2.52E-02 7.56E-02 795 426369.07 3732249.40 Worker 0.62 1.86E-02 6.33E-02 796 426419.07 3732249.40 Worker 0.36 1.06E-02 4.38E-02 797 426444.07 3732249.40 Worker 0.28 8.46E-03 3.67E-02 798 426469.07 3732249.40 Worker 0.24 7.00E-03 3.07E-02 799 426519.07 3732249.40 Residential 1.53 5.09E-03 2.27E-02 800 426544.07 3732249.40 Residential 1.28 4.31E-03 1.99E-02 801 426569.07 3732249.40 Residential 1.11 3.74E-03 1.76E-02 802 426594.07 3732249.40 Residential 0.97 3.28E-03 1.57E-02 803 426619.07 3732249.40 Residential 0.86 2.91E-03 1.43E-02 804 426644.07 3732249.40 Residential 0.77 2.60E-03 1.32E-02 805 426669.07 3732249.40 Residential 0.69 2.33E-03 1.21E-02 806 426694.07 3732249.40 Residential 0.62 2.11E-03 1.12E-02 807 426719.07 3732249.40 Residential 0.57 1.92E-03 1.05E-02 808 426744.07 3732249.40 Residential 0.52 1.75E-03 9.79E-03 809 426769.07 3732249.40 Residential 0.47 1.61E-03 9.35E-03 810 426794.07 3732249.40 Residential 0.44 1.48E-03 8.81E-03 811 425494.07 3732274.40 Residential 0.22 7.06E-04 6.49E-03 812 425519.07 3732274.40 Residential 0.23 7.51E-04 6.81E-03 813 425544.07 3732274.40 Residential 0.25 8.01E-04 7.15E-03 814 425569.07 3732274.40 Residential 0.28 8.57E-04 7.53E-03 815 425594.07 3732274.40 Residential 0.30 9.18E-04 7.94E-03 816 425619.07 3732274.40 Residential 0.34 9.88E-04 8.38E-03 817 425644.07 3732274.40 Residential 0.39 1.07E-03 8.87E-03 818 425669.07 3732274.40 Residential 0.47 1.17E-03 9.43E-03 819 425694.07 3732274.40 Residential 0.61 1.29E-03 1.01E-02 820 425744.07 3732274.40 Worker 0.11 1.60E-03 1.17E-02 821 425769.07 3732274.40 Worker 0.09 1.68E-03 1.25E-02 822 425794.07 3732274.40 Worker 0.08 1.84E-03 1.35E-02 823 425819.07 3732274.40 Worker 0.08 2.04E-03 1.47E-02 824 425844.07 3732274.40 Worker 0.09 2.28E-03 1.61E-02 825 425869.07 3732274.40 Worker 0.09 2.57E-03 1.77E-02 826 425894.07 3732274.40 Worker 0.10 2.94E-03 1.97E-02 827 425919.07 3732274.40 Worker 0.12 3.39E-03 2.19E-02 828 425944.07 3732274.40 Worker 0.14 3.98E-03 2.45E-02 829 425969.07 3732274.40 Worker 0.16 4.73E-03 2.75E-02 830 425994.07 3732274.40 Worker 0.19 5.73E-03 3.15E-02 831 426019.07 3732274.40 Worker 0.24 7.08E-03 3.69E-02 832 426044.07 3732274.40 Worker 0.30 9.03E-03 4.42E-02 833 426069.07 3732274.40 Worker 0.40 1.18E-02 5.44E-02 834 426344.07 3732274.40 Worker 1.01 2.98E-02 6.01E-02 835 426369.07 3732274.40 Worker 0.69 2.03E-02 4.60E-02 836 426394.07 3732274.40 Worker 0.53 1.57E-02 4.13E-02 837 426419.07 3732274.40 Worker 0.41 1.21E-02 3.66E-02 838 426444.07 3732274.40 Worker 0.33 9.68E-03 3.28E-02 839 426494.07 3732274.40 Residential 1.99 6.62E-03 2.65E-02 840 426519.07 3732274.40 Residential 1.66 5.53E-03 2.37E-02 Page 12 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 899 900 901 902 903 904 907 908 909 910 X -Coordinate ID (m) Y -Coordinate (m) Receptor Ty 426544.07 3732274.40 Residential 426569.07 3732274.40 Residential 426594.07 3732274.40 Residential 426619.07 3732274.40 Residential 426644.07 3732274.40 Residential 426669.07 3732274.40 Residential 426694.07 1 3732274.40 Residential 425494.07 425519.07 425544.07 425569.07 425594.07 425619.07 425644.07 425669.07 425694.07 425719.07 425769.07 425794.07 425819.07 425844.07 425869.07 425894.07 425919.07 425944.07 425969.07 425994.07 426019.07 426369.07 426394.07 426419.07 426444.07 426469.07 426494.07 426519.07 426544.07 426619.07 426644.07 426669.07 426694.07 426719.07 425519.07 425544.07 425569.07 425644.07 425669.07 425694.07 425719.07 425744.07 425794.07 425819.07 425844.07 425869.07 425894.07 425919.07 425944.07 425969.07 425994.07 426044.07 426369.07 426419.07 426469.07 426494.07 3732274.40 3732324.40 Residential 3732274.40 Worker Residential 3732274.40 3732324.40 Residential 3732299.40 Worker Residential 3732299.40 3.14E-03 Residential 3732299.40 2.80E-03 Residential 3732299.40 2.51E-03 Residential 3732299.40 2.26E-03 Residential 3732299.40 2.05E-03 Residential 3732299.40 1.86E-03 Residential 3732299.40 1.71E-03 Residential 3732299.40 7.10E-04 Residential 3732299.40 7.55E-04 Residential 3732299.40 8.05E-04 Worker 3732299.40 8.60E-04 Worker 3732299.40 9.22E-04 Worker 3732299.40 9.93E-04 Worker 3732299.40 1.07E-03 Worker 3732299.40 1.17E-03 Worker 3732299.40 1.28E-03 Worker 3732299.40 1.42E-03 Worker 3732299.40 1.75E-03 Worker 3732299.40 1.87E-03 Worker 3732299.40 2.06E-03 Worker 3732299.40 2.30E-03 Worker 3732299.40 2.59E-03 Worker 3732299.40 Worker 3732299.40 0.12 Worker 3732299.40 0.14 Residential 3732299.40 0.16 Residential 3732299.40 0.19 Residential 3732299.40 0.24 Residential 3732299.40 0.75 Residential 3732299.40 0.57 Residential 3732299.40 0.45 Residential 3732299.40 0.37 Residential 3732299.40 2.61 Residential 3732299.40 2.15 Residential 3732299.40 1.80 Residential 3732324.40 1.53 Residential 3732324.40 1.32 Residential 3732324.40 1.15 Residential 3732324.40 1.01 Residential 3732324.40 0.89 Residential 3732324.40 0.80 Residential 3732324.40 0.72 Residential 3732324.40 0.65 Residential 3732324.40 0.24 Residential 3732324.40 0.25 Residential 3732324.40 Worker 3732324.40 Worker 3732324.40 Worker 3732324.40 Worker 3732324.40 Worker 3732324.40 Worker Cancer Risk ;in a million) Chronic Hazard Index Acute Hazard Index 1.40 4.71E-03 2.14E-02 1.21 4.06E-03 1.92E-02 1.06 3.56E-03 1.72E-02 0.93 3.14E-03 1.55E-02 0.83 2.80E-03 1.40E-02 0.75 2.51E-03 1.26E-02 0.67 2.26E-03 1.15E-02 0.61 2.05E-03 1.07E-02 0.55 1.86E-03 1.00E-02 0.51 1.71E-03 9.28E-03 0.22 7.10E-04 6.41E-03 0.23 7.55E-04 6.74E-03 0.25 8.05E-04 7.10E-03 0.28 8.60E-04 7.50E-03 0.30 9.22E-04 7.92E-03 0.34 9.93E-04 8.39E-03 0.38 1.07E-03 8.93E-03 0.44 1.17E-03 9.53E-03 0.53 1.28E-03 1.02E-02 0.69 1.42E-03 1.10E-02 0.11 1.75E-03 1.27E-02 0.09 1.87E-03 1.35E-02 0.09 2.06E-03 1.45E-02 0.09 2.30E-03 1.57E-02 0.10 2.59E-03 1.71E-02 0.11 2.96E-03 1.89E-02 0.12 3.41E-03 2.10E-02 0.14 3.98E-03 2.35E-02 0.16 4.71E-03 2.67E-02 0.19 5.67E-03 3.07E-02 0.24 6.95E-03 3.59E-02 0.75 2.22E-02 4.51E-02 0.57 1.69E-02 3.84E-02 0.45 1.32E-02 3.37E-02 0.37 1.08E-02 2.93E-02 2.61 8.66E-03 2.54E-02 2.15 7.14E-03 2.27E-02 1.80 6.00E-03 2.05E-02 1.53 5.10E-03 1.88E-02 1.32 4.40E-03 1.73E-02 1.15 3.83E-03 1.60E-02 1.01 3.38E-03 1.47E-02 0.89 2.99E-03 1.41E-02 0.80 2.68E-03 1.29E-02 0.72 2.41E-03 1.18E-02 0.65 2.17E-03 1.14E-02 0.24 7.58E-04 6.81E-03 0.25 8.09E-04 7.17E-03 0.28 8.64E-04 7.55E-03 0.30 9.27E-04 7.97E-03 0.33 9.97E-04 8.42E-03 0.37 1.08E-03 8.90E-03 0.42 1.17E-03 9.40E-03 0.49 1.28E-03 9.97E-03 0.59 1.40E-03 1.06E-02 0.78 1.57E-03 1.14E-02 0.12 1.93E-03 1.31E-02 0.10 2.09E-03 1.42E-02 0.10 2.31E-03 1.54E-02 0.10 2.60E-03 1.68E-02 0.11 2.95E-03 1.84E-02 0.12 3.39E-03 2.05E-02 0.14 3.93E-03 2.30E-02 3732324.40 Worker 0.16 1 4.61E-03 2.58E-02 3732324.40 Worker 0.19 5.49E-03 2.95E-02 3732324.40 Worker 0.29 8.19E-03 3.91E-02 3732324.40 Worker 0.73 2.17E-02 4.15E-02 3732324.40 Worker 0.47 1.38E-02 3.13E-02 3732324.40 Residential 2.74 9.10E-03 2.44E-02 3732324.40 Residential 2.27 7.55E-03 2.17E-02 Page 13 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 911 426519.07 3732324.40 Residential 1.92 6.38E-03 1.95E-02 912 426544.07 3732324.40 Residential 1.64 5.44E-03 1.76E-02 913 426569.07 3732324.40 Residential 1.42 4.71E-03 1.61E-02 914 426594.07 3732324.40 Residential 1.23 4.09E-03 1.48E-02 915 426619.07 3732324.40 Residential 1.08 3.60E-03 1.38E-02 916 426644.07 3732324.40 Residential 0.96 3.19E-03 1.29E-02 917 426669.07 3732324.40 Residential 0.86 2.85E-03 1.23E-02 918 426694.07 3732324.40 Residential 0.77 2.55E-03 1.15E-02 919 425544.07 3732349.40 Residential 0.25 8.12E-04 7.03E-03 920 425569.07 3732349.40 Residential 0.27 8.68E-04 7.38E-03 921 425594.07 3732349.40 Residential 0.30 9.31E-04 7.76E-03 922 425619.07 3732349.40 Residential 0.33 1.00E-03 8.15E-03 923 425644.07 3732349.40 Residential 0.36 1.08E-03 8.57E-03 924 425669.07 3732349.40 Residential 0.41 1.17E-03 9.11E-03 925 425694.07 3732349.40 Residential 0.46 1.28E-03 9.73E-03 926 425719.07 3732349.40 Residential 0.54 1.40E-03 1.04E-02 927 425744.07 3732349.40 Residential 0.66 1.54E-03 1.12E-02 928 425769.07 3732349.40 Residential 0.90 1.74E-03 1.20E-02 929 425819.07 3732349.40 Worker 0.12 2.12E-03 1.39E-02 930 425844.07 3732349.40 Worker 0.11 2.32E-03 1.51E-02 931 425869.07 3732349.40 Worker 0.11 2.59E-03 1.65E-02 932 425894.07 3732349.40 Worker 0.11 2.92E-03 1.81E-02 933 425919.07 3732349.40 Worker 0.12 3.33E-03 1.98E-02 934 425944.07 3732349.40 Worker 0.14 3.82E-03 2.21E-02 935 425969.07 3732349.40 Worker 0.16 4.45E-03 2.46E-02 936 426019.07 3732349.40 Worker 0.22 6.24E-03 3.13E-02 937 426044.07 3732349.40 Worker 0.26 7.27E-03 3.58E-02 938 426069.07 3732349.40 Worker 0.34 8.84E-03 4.61E-02 939 426394.07 3732349.40 Worker 0.57 1.66E-02 3.34E-02 940 426419.07 3732349.40 Residential 4.06 1.35E-02 2.93E-02 941 426444.07 3732349.40 Residential 3.34 1.11E-02 2.60E-02 942 426494.07 3732349.40 Residential 2.35 7.79E-03 2.07E-02 943 426519.07 3732349.40 Residential 2.00 6.62E-03 1.89E-02 944 426544.07 3732349.40 Residential 1.72 5.69E-03 1.72E-02 945 426569.07 3732349.40 Residential 1.49 4.93E-03 1.57E-02 946 426594.07 3732349.40 Residential 1.30 4.31E-03 1.44E-02 947 426619.07 3732349.40 Residential 1.15 3.79E-03 1.35E-02 948 426644.07 3732349.40 Residential 1.02 3.36E-03 1.25E-02 949 426669.07 3732349.40 Residential 0.91 3.00E-03 1.17E-02 950 426694.07 3732349.40 Residential 0.82 2.69E-03 1.10E-02 951 425569.07 3732374.40 Residential 0.27 8.71E-04 7.21E-03 952 425594.07 3732374.40 Residential 0.30 9.34E-04 7.62E-03 953 425619.07 3732374.40 Residential 0.33 1.00E-03 8.06E-03 954 425644.07 3732374.40 Residential 0.36 1.08E-03 8.54E-03 955 425669.07 3732374.40 Residential 0.40 1.17E-03 9.03E-03 956 425694.07 3732374.40 Residential 0.45 1.27E-03 9.58E-03 957 425719.07 3732374.40 Residential 0.51 1.39E-03 1.02E-02 958 425744.07 3732374.40 Residential 0.60 1.53E-03 1.09E-02 959 425769.07 3732374.40 Residential 0.73 1.69E-03 1.17E-02 960 425794.07 3732374.40 Residential 1.02 1.93E-03 1.28E-02 961 425844.07 3732374.40 Worker 0.12 2.32E-03 1.48E-02 962 425869.07 3732374.40 Worker 0.11 2.55E-03 1.59E-02 963 425894.07 3732374.40 Worker 0.12 2.85E-03 1.75E-02 964 425919.07 3732374.40 Worker 0.12 3.22E-03 1.91E-02 965 425944.07 3732374.40 Worker 0.14 3.69E-03 2.11E-02 966 425994.07 3732374.40 Worker 0.18 4.91E-03 2.58E-02 967 426019.07 3732374.40 Worker 0.20 5.56E-03 2.89E-02 968 426044.07 3732374.40 Worker 0.24 6.43E-03 3.54E-02 969 426069.07 3732374.40 Worker 0.30 7.62E-03 3.86E-02 970 426094.07 3732374.40 Worker 0.53 1.08E-02 4.60E-02 971 426369.07 3732374.40 Worker 0.62 1.83E-02 3.36E-02 972 426394.07 3732374.40 Worker 0.52 1.53E-02 3.06E-02 973 426419.07 3732374.40 Residential 3.87 1.29E-02 2.73E-02 974 426444.07 3732374.40 Residential 3.26 1.08E-02 2.43E-02 975 426469.07 3732374.40 Residential 2.77 9.19E-03 2.21E-02 976 426519.07 3732374.40 Residential 2.04 6.73E-03 1.80E-02 977 426544.07 3732374.40 Residential 1.76 5.83E-03 1.65E- 978 426569.07 3732374.40 Residential 1.54 5.08E-03 1.52E-02 979 426594.07 3732374.40 Residential 1.35 4.46E-03 1.41E-02 980 426619.07 3732374.40 Residential 1.20 3.94E-03 1.30E-02 Page 14 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) V -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 981 426644.07 3732374.40 Residential 1.06 3.50E-03 1.23E-02 982 426669.07 3732374.40 Residential 0.95 3.14E-03 1.13E-02 983 426694.07 3732374.40 Residential 0.86 2.82E-03 1.07E-02 984 425594.07 3732399.40 Residential 0.30 9.36E-04 7.53E-03 985 425619.07 3732399.40 Residential 0.32 1.01E-03 7.92E-03 986 425644.07 3732399.40 Residential 0.35 1.08E-03 8.39E-03 987 425669.07 3732399.40 Residential 0.39 1.17E-03 8.83E-03 988 425694.07 3732399.40 Residential 0.43 1.27E-03 9.42E-03 989 425719.07 3732399.40 Residential 0.49 1.38E-03 1.01E-02 990 425744.07 3732399.40 Residential 0.56 1.51E-03 1.08E-02 991 425769.07 3732399.40 Residential 0.66 1.66E-03 1.15E-02 992 425794.07 3732399.40 Residential 0.81 1.84E-03 1.23E-02 993 425819.07 3732399.40 Residential 1.16 2.11E-03 1.34E-02 994 425869.07 3732399.40 Worker 0.13 2.51E-03 1.55E-02 995 425894.07 3732399.40 Worker 0.12 2.77E-03 1.68E-02 996 425919.07 3732399.40 Worker 0.13 3.13E-03 1.85E-02 997 425969.07 3732399.40 Worker 0.15 3.98E-03 2.18E-02 998 425994.07 3732399.40 Worker 0.16 4.42E-03 2.41E-02 999 426019.07 3732399.40 Worker 0.19 4.97E-03 2.81E-02 1000 426044.07 3732399.40 Worker 0.21 5.64E-03 2.99E-02 1001 426069.07 3732399.40 Worker 0.26 6.48E-03 3.26E-02 1002 426094.07 3732399.40 Worker 0.35 7.90E-03 3.72E-02 1003 426244.07 3732399.40 Worker 0.56 1.61E-02 4.33E-02 1004 426344.07 3732399.40 Worker 0.61 1.80E-02 3.31E-02 1005 426369.07 3732399.40 Worker 0.53 1.55E-02 2.89E-02 1006 426394.07 3732399.40 Residential 4.18 1.39E-02 2.73E-02 1007 426419.07 3732399.40 Residential 3.61 1.20E-02 2.53E-02 1008 426444.07 3732399.40 Residential 3.12 1.04E-02 2.30E-02 1009 426469.07 3732399.40 Residential 2.69 8.90E-03 2.07E-02 1010 426494.07 3732399.40 Residential 2.34 7.72E-03 1.91E-02 1011 426519.07 3732399.40 Residential 2.04 6.71E-03 1.75E-02 1012 426544.07 3732399.40 Residential 1.77 5.84E-03 1.59E-02 1013 426569.07 3732399.40 Residential 1.56 5.14E-03 1.46E-02 1014 426594.07 3732399.40 Residential 1.38 4.54E-03 1.35E-02 1015 426619.07 3732399.40 Residential 1.23 4.04E-03 1.26E-02 1016 426644.07 3732399.40 Residential 1.10 3.60E-03 1.20E-02 1017 426669.07 3732399.40 Residential 0.99 3.24E-03 1.12E-02 1018 426694.07 3732399.40 Residential 0.89 2.91E-03 1.06E-02 1019 426719.07 3732399.40 Residential 0.81 2.64E-03 9.91E-03 1020 425594.07 3732424.40 Residential 0.29 9.36E-04 7.38E-03 1021 425619.07 3732424.40 Residential 0.32 1.00E-03 7.80E-03 1022 425644.07 3732424.40 Residential 0.35 1.08E-03 8.27E-03 1023 425669.07 3732424.40 Residential 0.38 1.16E-03 8.77E-03 1024 425694.07 3732424.40 Residential 0.42 1.26E-03 9.28E-03 1025 425719.07 3732424.40 Residential 0.47 1.36E-03 9.88E-03 1026 425744.07 3732424.40 Residential 0.53 1.49E-03 1.04E-02 1027 425769.07 3732424.40 Residential 0.60 1.62E-03 1.12E-02 1028 425794.07 3732424.40 Residential 0.71 1.78E-03 1.20E-02 1029 425819.07 3732424.40 Residential 0.88 1.98E-03 1.29E-02 1030 425894.07 3732424.40 Worker 0.13 2.73E-03 1.64E-02 1031 425919.07 3732424.40 Worker 0.14 3.15E-03 1.76E-02 1032 425944.07 3732424.40 Worker 0.13 3.31E-03 1.88E-02 1033 425969.07 3732424.40 Worker 0.14 3.61E-03 2.05E-02 1034 425994.07 3732424.40 Worker 0.15 3.99E-03 2.31E-02 1035 426019.07 3732424.40 Worker 0.17 4.43E-03 2.44E-02 1036 426044.07 3732424.40 Worker 0.19 4.95E-03 2.64E-02 1037 426069.07 3732424.40 Worker 0.22 5.63E-03 2.92E-02 1038 426094.07 3732424.40 Worker 0.28 6.66E-03 3.24E-02 1039 426119.07 3732424.40 Worker 0.41 8.25E-03 3.62E-02 1040 426194.07 3732424.40 Worker 0.39 9.77E-03 3.77E-02 1041 426219.07 3732424.40 Worker 0.40 1.09E-02 3.77E-02 1042 426244.07 3732424.40 Worker 0.45 1.25E-02 3.66E-02 1043 426294.07 3732424.40 Worker 0.54 1.55E-02 3.44E-02 1044 426319.07 3732424.40 Worker 0.54 1.56E-02 3.24E-02 1045 426344.07 3732424.40 Worker 0.50 1.46E-02 2.80E-02 1046 426369.07 3732424.40 Residential 4.17 1.39E-02 2.74E-02 1047 426394.07 3732424.40 Residential 3.75 1.24E-02 2.50E-02 1048 426419.07 3732424.40 Residential 3.33 1.10E-02 2.29E-02 1049 426444.07 3732424.40 Residential 2.93 9.70E-03 2.15E-02 1050 426469.07 3732424.40 Residential 2.58 8.51E-03 1.98E-02 Page 15 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 1051 426494.07 3732424.40 Residential 2.26 7.45E-03 1.80E-02 1052 426544.07 3732424.40 Residential 1.77 5.80E-03 1.54E-02 1053 426569.07 3732424.40 Residential 1.57 5.13E-03 1.43E-02 1054 426594.07 3732424.40 Residential 1.39 4.56E-03 1.32E-02 1055 426619.07 3732424.40 Residential 1.24 4.07E-03 1.25E-02 1056 426644.07 3732424.40 Residential 1.12 3.65E-03 1.17E-02 1057 426669.07 3732424.40 Residential 1.01 3.29E-03 1.09E-02 1058 426694.07 3732424.40 Residential 0.91 2.98E-03 1.03E-02 1059 426719.07 3732424.40 Residential 0.83 2.71E-03 9.72E-03 1060 425619.07 3732449.40 Residential 0.32 9.98E-04 7.72E-03 1061 425644.07 3732449.40 Residential 0.34 1.07E-03 8.15E-03 1062 425669.07 3732449.40 Residential 0.37 1.15E-03 8.59E-03 1063 425694.07 3732449.40 Residential 0.41 1.24E-03 9.01E-03 1064 425719.07 3732449.40 Residential 0.45 1.34E-03 9.63E-03 1065 425744.07 3732449.40 Residential 0.50 1.45E-03 1.02E-02 1066 425769.07 3732449.40 Residential 0.57 1.58E-03 1.09E-02 1067 425794.07 3732449.40 Residential 0.65 1.72E-03 1.16E-02 1068 425819.07 3732449.40 Residential 0.76 1.88E-03 1.24E-02 1069 425844.07 3732449.40 Residential 0.94 2.08E-03 1.34E-02 1070 425894.07 3732449.40 Worker 0.16 2.72E-03 1.56E-02 1071 425919.07 3732449.40 Worker 0.13 2.81E-03 1.65E-02 1072 425944.07 3732449.40 Worker 0.13 3.02E-03 1.78E-02 1073 425969.07 3732449.40 Worker 0.13 3.29E-03 1.94E-02 1074 425994.07 3732449.40 Worker 0.14 3.60E-03 2.06E-02 1075 426019.07 3732449.40 Worker 0.16 3.97E-03 2.22E-02 1076 426044.07 3732449.40 Worker 0.18 4.47E-03 2.43E-02 1077 426069.07 3732449.40 Worker 0.20 5.04E-03 2.63E-02 1078 426094.07 3732449.40 Worker 0.23 5.48E-03 2.85E-02 1079 426119.07 3732449.40 Worker 0.29 6.30E-03 3.04E-02 1080 426144.07 3732449.40 Worker 0.45 8.32E-03 3.35E-02 1081 426169.07 3732449.40 Worker 0.56 1.00E-02 3.48E-02 1082 426194.07 3732449.40 Worker 0.38 8.56E-03 3.31E-02 1083 426219.07 3732449.40 Worker 0.36 9.02E-03 3.28E-02 1084 426269.07 3732449.40 Worker 0.41 1.14E-02 3.09E-02 1085 426294.07 3732449.40 Worker 0.43 1.23E-02 2.99E-02 1086 426319.07 3732449.40 Worker 0.43 1.25E-02 2.78E-02 1087 426344.07 3732449.40 Residential 3.82 1.26E-02 2.65E-02 1088 426369.07 3732449.40 Residential 3.62 1.19E-02 2.45E-02 1089 426394.07 3732449.40 Residential 3.35 1.10E-02 2.30E-02 1090 426419.07 3732449.40 Residential 3.04 1.00E-02 2.11E-02 1091 426444.07 3732449.40 Residential 2.73 8.98E-03 1.95E-02 1092 426469.07 3732449.40 Residential 2.43 8.00E-03 1.85E-02 1093 426494.07 3732449.40 Residential 2.17 7.13E-03 1.72E-02 1094 426519.07 3732449.40 Residential 1.94 6.35E-03 1.59E-02 1095 426544.07 3732449.40 Residential 1.73 5.66E-03 1.47E-02 1096 426569.07 3732449.40 Residential 1.54 5.05E-03 1.39E-02 1097 426594.07 3732449.40 Residential 1.38 4.52E-03 1.28E-02 1098 426619.07 3732449.40 Residential 1.24 4.06E-03 1.21E-02 1099 426644.07 3732449.40 Residential 1.12 3.66E-03 1.14E-02 1100 426669.07 3732449.40 Residential 1.02 3.31E-03 1.07E-02 1101 426694.07 3732449.40 Residential 0.92 3.01E-03 1.01E-02 1102 426719.07 3732449.40 Residential 0.85 2.75E-03 9.42E-03 1103 425644.07 3732474.40 Residential 0.34 1.06E-03 7.92E-03 1104 425669.07 3732474.40 Residential 0.36 1.13E-03 8.42E-03 1105 425694.07 3732474.40 Residential 0.40 1.22E-03 8.87E-03 1106 425719.07 3732474.40 Residential 0.43 1.31E-03 9.36E-03 1107 425744.07 3732474.40 Residential 0.48 1.41E-03 9.88E-03 1108 425769.07 3732474.40 Residential 0.53 1.52E-03 1.05E-02 1109 425794.07 3732474.40 Residential 0.60 1.65E-03 1.12E-02 1110 425819.07 3732474.40 Residential 0.68 1.79E-03 1.19E-02 1111 425844.07 3732474.40 Residential 0.80 1.96E-03 1.28E-02 1112 425869.07 3732474.40 Residential 1.00 2.15E-03 1.37E-02 1113 425919.07 3732474.40 Worker 0.15 2.58E-03 1.57E-02 1114 425944.07 3732474.40 Worker 0.13 2.77E-03 1.67E-02 1115 425969.07 3732474.40 Worker 0.13 3.00E-03 1.78E-02 1116 425994.07 3732474.40 Worker 0.14 3.29E-03 1.91E-02 1117 426044.07 3732474.40 Worker 0.16 4.05E-03 2.21E-02 1118 426069.07 3732474.40 Worker 0.17 4.29E-03 2.37E-02 1119 426094.07 3732474.40 Worker 0.19 4.66E-03 2.52E-02 1120 426119.07 3732474.40 Worker 0.23 5.20E-03 2.64E-02 Page 16 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 1121 426144.07 3732474.40 Worker 0.30 6.07E-03 2.79E-02 1122 426169.07 3732474.40 Worker 0.50 8.58E-03 3.18E-02 1123 426194.07 3732474.40 Worker 0.47 8.77E-03 3.10E-02 1124 426244.07 3732474.40 Worker 0.34 8.57E-03 2.81E-02 1125 426269.07 3732474.40 Worker 0.34 9.26E-03 2.72E-02 1126 426294.07 3732474.40 Worker 0.36 9.90E-03 2.56E-02 1127 426319.07 3732474.40 Residential 3.27 1.05E-02 2.54E-02 1128 426344.07 3732474.40 Residential 3.26 1.06E-02 2.42E-02 1129 426369.07 3732474.40 Residential 3.16 1.03E-02 2.21E-02 1130 426394.07 3732474.40 Residential 2.97 9.74E-03 2.08E-02 1131 426419.07 3732474.40 Residential 2.75 9.01E-03 1.97E-02 1132 426444.07 3732474.40 Residential 2.51 8.22E-03 1.81E-02 1133 426469.07 3732474.40 Residential 2.28 7.46E-03 1.69E-02 1134 426494.07 3732474.40 Residential 2.06 6.73E-03 1.61E-02 1135 426519.07 3732474.40 Residential 1.85 6.05E-03 1.54E-02 1136 426569.07 3732474.40 Residential 1.51 4.91E-03 1.33E-02 1137 426594.07 3732474.40 Residential 1.36 4.44E-03 1.25E-02 1138 426619.07 3732474.40 Residential 1.23 4.01E-03 1.18E-02 1139 426644.07 3732474.40 Residential 1.12 3.64E-03 1.11E-02 1140 426669.07 3732474.40 Residential 1.02 3.31E-03 1.04E-02 1141 426694.07 3732474.40 Residential 0.93 3.01E-03 9.88E-03 1142 426719.07 3732474.40 Residential 0.85 2.77E-03 9.25E-03 1143 426744.07 3732474.40 Residential 0.78 2.53E-03 8.83E-03 1144 425669.07 3732499.40 Residential 0.35 1.11E-03 8.20E-03 1145 425694.07 3732499.40 Residential 0.38 1.19E-03 8.60E-03 1146 425719.07 3732499.40 Residential 0.42 1.27E-03 9.09E-03 1147 425744.07 3732499.40 Residential 0.46 1.36E-03 9.64E-03 1148 425769.07 3732499.40 Residential 0.50 1.47E-03 1.02E-02 1149 425794.07 3732499.40 Residential 0.56 1.58E-03 1.08E-02 1150 425819.07 3732499.40 Residential 0.62 1.70E-03 1.14E-02 1151 425844.07 3732499.40 Residential 0.71 1.84E-03 1.22E-02 1152 425869.07 3732499.40 Residential 0.83 1.99E-03 1.30E-02 1153 425894.07 3732499.40 Residential 1.05 2.17E-03 1.39E-02 1154 425944.07 3732499.40 Worker 0.14 2.55E-03 1.57E-02 1155 425969.07 3732499.40 Worker 0.13 2.78E-03 1.67E-02 1156 426019.07 3732499.40 Worker 0.14 3.35E-03 1.89E-02 1157 426044.07 3732499.40 Worker 0.15 3.50E-03 2.00E-02 1158 426069.07 3732499.40 Worker 0.15 3.74E-03 2.15E-02 1159 426094.07 3732499.40 Worker 0.17 4.04E-03 2.23E-02 1160 426119.07 3732499.40 Worker 0.19 4.42E-03 2.34E-02 1161 426144.07 3732499.40 Worker 0.23 4.96E-03 2.44E-02 1162 426169.07 3732499.40 Worker 0.30 5.87E-03 2.60E-02 1163 426219.07 3732499.40 Worker 0.36 7.35E-03 2.69E-02 1164 426244.07 3732499.40 Worker 0.30 7.21E-03 2.49E-02 1165 426269.07 3732499.40 Worker 0.29 7.68E-03 2.40E-02 1166 426294.07 3732499.40 Residential 2.72 8.26E-03 2.31E-02 1167 426319.07 3732499.40 Residential 2.79 8.75E-03 2.26E-02 1168 426344.07 3732499.40 Residential 2.81 8.97E-03 2.19E-02 1169 426369.07 3732499.40 Residential 2.76 8.90E-03 2.05E-02 1170 426394.07 3732499.40 Residential 2.64 8.57E-03 1.91E-02 1171 426419.07 3732499.40 Residential 2.48 8.08E-03 1.80E-02 1172 426444.07 3732499.40 Residential 2.30 7.51E-03 1.71E-02 1173 426469.07 3732499.40 Residential 2.12 6.91E-03 1.58E-02 1174 426494.07 3732499.40 Residential 1.94 6.31E-03 1.49E-02 1175 426519.07 3732499.40 Residential 1.77 5.75E-03 1.42E-02 1176 426544.07 3732499.40 Residential 1.61 5.25E-03 1.36E-02 1177 426569.07 3732499.40 Residential 1.46 4.76E-03 1.29E-02 1178 426594.07 3732499.40 Residential 1.33 4.33E-03 1.20E-02 1179 426619.07 3732499.40 Residential 1.21 3.94E-03 1.13E-02 1180 426644.07 3732499.40 Residential 1.10 3.58E-03 1.08E-02 1181 426669.07 3732499.40 Residential 1.01 3.28E-03 1.02E-02 1182 426694.07 3732499.40 Residential 0.93 3.01E-03 9.58E-03 1183 426719.07 3732499.40 Residential 0.85 2.76E-03 9.11E-03 1184 426744.07 3732499.40 Residential 0.78 2.54E-03 8.65E-03 1185 425694.07 3732524.40 Residential 0.37 1.15E-03 8.40E-03 1186 425719.07 3732524.40 Residential 0.40 1.23E-03 8.87E-03 1187 425744.07 3732524.40 Residential 0.44 1.31E-03 9.31E-03 1188 425769.07 3732524.40 Residential 0.48 1.40E-03 9.84E-03 1189 425794.07 3732524.40 Residential 0.52 1.50E-03 1.04E-02 1190 425819.07 3732524.40 Residential 0.58 1.61E-03 1.10E-02 Page 17 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 1191 425844.07 3732524.40 Residential 0.64 1.73E-03 1.17E-02 1192 425869.07 3732524.40 Residential 0.73 1.86E-03 1.24E-02 1193 425894.07 3732524.40 Residential 0.86 2.01E-03 1.31E-02 1194 425919.07 3732524.40 Residential 1.11 2.17E-03 1.39E-02 1195 425969.07 3732524.40 Worker 0.15 2.83E-03 1.59E-02 1196 425994.07 3732524.40 Worker 0.13 2.81E-03 1.65E-02 1197 426019.07 3732524.40 Worker 0.13 2.93E-03 1.74E-02 1198 426044.07 3732524.40 Worker 0.13 3.09E-03 1.85E-02 1199 426069.07 3732524.40 Worker 0.14 3.30E-03 1.94E-02 1200 426094.07 3732524.40 Worker 0.15 3.55E-03 2.02E-02 1201 426119.07 3732524.40 Worker 0.17 3.85E-03 2.09E-02 1202 426144.07 3732524.40 Worker 0.21 4.25E-03 2.19E-02 1203 426194.07 3732524.40 Worker 0.29 5.52E-03 2.37E-02 1204 426219.07 3732524.40 Worker 0.27 5.81E-03 2.31E-02 1205 426244.07 3732524.40 Worker 0.26 6.13E-03 2.24E-02 1206 426269.07 3732524.40 Residential 2.35 6.50E-03 2.17E-02 1207 426294.07 3732524.40 Residential 2.36 6.97E-03 2.08E-02 1208 426319.07 3732524.40 Residential 2.41 7.39E-03 2.03E-02 1209 426344.07 3732524.40 Residential 2.44 7.65E-03 1.99E-02 1210 426369.07 3732524.40 Residential 2.42 7.70E-03 1.89E-02 1211 426394.07 3732524.40 Residential 2.35 7.55E-03 1.75E-02 1212 426419.07 3732524.40 Residential 2.24 7.24E-03 1.67E-02 1213 426444.07 3732524.40 Residential 2.11 6.82E-03 1.59E-02 1214 426469.07 3732524.40 Residential 1.96 6.35E-03 1.50E-02 1215 426494.07 3732524.40 Residential 1.81 5.89E-03 1.40E-02 1216 426519.07 3732524.40 Residential 1.67 5.42E-03 1.32E-02 1217 426544.07 3732524.40 Residential 1.54 4.99E-03 1.27E-02 1218 426569.07 3732524.40 Residential 1.41 4.58E-03 1.22E-02 1219 426594.07 3732524.40 Residential 1.29 4.18E-03 1.17E-02 1220 426619.07 3732524.40 Residential 1.18 3.83E-03 1.10E-02 1221 426644.07 3732524.40 Residential 1.09 3.51E-03 1.03E-02 1222 426669.07 3732524.40 Residential 1.00 3.23E-03 9.83E-03 1223 426694.07 3732524.40 Residential 0.92 2.97E-03 9.37E-03 1224 426719.07 3732524.40 Residential 0.85 2.74E-03 8.86E-03 1225 425719.07 3732549.40 Residential 0.38 1.18E-03 8.56E-03 1226 425744.07 3732549.40 Residential 0.41 1.26E-03 8.97E-03 1227 425769.07 3732549.40 Residential 0.45 1.34E-03 9.48E-03 1228 425794.07 3732549.40 Residential 0.49 1.43E-03 9.99E-03 1229 425819.07 3732549.40 Residential 0.53 1.52E-03 1.06E-02 1230 425844.07 3732549.40 Residential 0.59 1.63E-03 1.11E-02 1231 425869.07 3732549.40 Residential 0.66 1.74E-03 1.18E-02 1232 425894.07 3732549.40 Residential 0.75 1.86E-03 1.24E-02 1233 425919.07 3732549.40 Residential 0.88 1.99E-03 1.30E-02 1234 425944.07 3732549.40 Residential 1.18 2.15E-03 1.38E-02 1235 425994.07 3732549.40 Worker 0.13 2.48E-03 1.53E-02 1236 426019.07 3732549.40 Worker 0.13 2.61E-03 1.61E-02 1237 426044.07 3732549.40 Worker 0.13 2.76E-03 1.71E-02 1238 426069.07 3732549.40 Worker 0.13 2.94E-03 1.76E-02 1239 426094.07 3732549.40 Worker 0.15 3.16E-03 1.83E-02 1240 426119.07 3732549.40 Worker 0.17 3.44E-03 1.90E-02 1241 426169.07 3732549.40 Worker 0.21 4.11E-03 2.00E-02 1242 426194.07 3732549.40 Worker 0.21 4.34E-03 2.00E-02 1243 426219.07 3732549.40 Worker 0.22 4.85E-03 2.07E-02 1244 426244.07 3732549.40 Residential 2.04 5.16E-03 2.00E-02 1245 426269.07 3732549.40 Residential 2.03 5.54E-03 1.95E-02 1246 426294.07 3732549.40 Residential 2.05 5.93E-03 1.89E-02 1247 426319.07 3732549.40 Residential 2.09 6.30E-03 1.83E-02 1248 426344.07 3732549.40 Residential 2.13 6.58E-03 1.79E-02 1249 426369.07 3732549.40 Residential 2.13 6.70E-03 1.74E-02 1250 426394.07 3732549.40 Residential 2.10 6.66E-03 1.65E-02 1251 426419.07 3732549.40 Residential 2.02 6.47E-03 1.54E-02 1252 426444.07 3732549.40 Residential 1.92 6.18E-03 1.46E-02 1253 426469.07 3732549.40 Residential 1.82 5.85E-03 1.41E-02 1254 426494.07 3732549.40 Residential 1.69 5.47E-03 1.33E-02 1255 426519.07 3732549.40 Residential 1.58 5.09E-03 1.25E-02 1256 426544.07 3732549.40 Residential 1.46 4.72E-03 1.19E-02 1257 426569.07 3732549.40 Residential 1.35 4.37E-03 1.14E-02 1258 426594.07 3732549.40 Residential 1.25 4.03E-03 1.12E-02 1259 426619.07 3732549.40 Residential 1.15 3.71E-03 1.06E-02 1260 426644.07 3732549.40 Residential 1.06 3.43E-03 1.00E-02 Page 18 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (Ina million) Chronic Hazard Index Acute Hazard Index 1261 426669.07 3732549.40 Residential 0.98 3.16E-03 9.41E-03 1262 426694.07 3732549.40 Residential 0.91 2.92E-03 9.05E-03 1263 426719.07 3732549.40 Residential 0.84 2.70E-03 8.61E-03 1264 1 425744.07 3732574.40 Residential 0.39 1.20E-03 8.68E-03 1265 425769.07 3732574.40 Residential 0.42 1.28E-03 9.11E-03 1266 425794.07 3732574.40 Residential 0.46 1.36E-03 9.68E-03 1267 425819.07 3732574.40 Residential 0.50 1.44E-03 1.01E-02 1268 425844.07 3732574.40 Residential 0.54 1.53E-03 1.06E-02 1269 425869.07 3732574.40 Residential 0.60 1.63E-03 1.12E-02 1270 425894.07 3732574.40 Residential 0.67 1.73E-03 1.17E-02 1271 425919.07 3732574.40 Residential 0.76 1.84E-03 1.23E-02 1272 425944.07 3732574.40 Residential 0.90 1.96E-03 1.29E-02 1273 425994.07 3732574.40 Worker 0.16 2.24E-03 1.43E-02 1274 426019.07 3732574.40 Worker 0.13 2.35E-03 1.51E-02 1275 426044.07 3732574.40 Worker 0.13 2.49E-03 1.57E-02 1276 426069.07 3732574.40 Worker 0.13 2.66E-03 1.62E-02 1277 426094.07 3732574.40 Worker 0.16 2.91E-03 1.70E-02 1278 426119.07 3732574.40 Worker 0.19 3.25E-03 1.74E-02 1279 426144.07 3732574.40 Worker 0.17 3.32E-03 1.77E-02 1280 426169.07 3732574.40 Worker 0.16 3.45E-03 1.76E-02 1281 426194.07 3732574.40 Worker 0.18 3.79E-03 1.83E-02 1282 426219.07 3732574.40 Residential 1.67 4.09E-03 1.85E-02 1283 426244.07 3732574.40 Residential 1.72 4.42E-03 1.80E-02 1284 1 426269.07 3732574.40 Residential 1.75 4.75E-03 1.76E-02 1285 426294.07 3732574.40 Residential 1.79 5.09E-03 1.72E-02 1286 426319.07 3732574.40 Residential 1.83 5.43E-03 1.67E-02 1287 426344.07 3732574.40 Residential 1.87 5.69E-03 1.64E-02 1288 426369.07 3732574.40 Residential 1.89 5.85E-03 1.61E-02 1289 426394.07 3732574.40 Residential 1.87 5.88E-03 1.54E-02 1290 426419.07 3732574.40 Residential 1.83 5.79E-03 1.43E-02 1291 426444.07 3732574.40 Residential 1.76 5.61E-03 1.38E-02 1292 426469.07 3732574.40 Residential 1.67 5.35E-03 1.31E-02 1293 426494.07 3732574.40 Residential 1.58 5.06E-03 1.26E-02 1294 426519.07 3732574.40 Residential 1.48 4.76E-03 1.20E-02 1295 426544.07 3732574.40 Residential 1.38 4.45E-03 1.13E-02 1296 426569.07 3732574.40 Residential 1.29 4.15E-03 1.08E-02 1297 426594.07 3732574.40 Residential 1.20 3.86E-03 1.04E-02 1298 426619.07 3732574.40 Residential 1.11 3.57E-03 1.03E-02 1299 426644.07 3732574.40 Residential 1.03 3.31E-03 9.81E-03 1300 426669.07 3732574.40 Residential 0.96 3.08E-03 9.28E-03 1301 426694.07 3732574.40 Residential 0.89 2.86E-03 8.72E-03 1302 426719.07 3732574.40 Residential 0.83 2.65E-03 8.31E-03 1303 425744.07 3732599.40 Residential 0.37 1.15E-03 8.39E-03 1304 425769.07 3732599.40 Residential 0.40 1.21E-03 8.86E-03 1305 425794.07 3732599.40 Residential 0.43 1.29E-03 9.23E-03 1306 425819.07 3732599.40 Residential 0.47 1.36E-03 9.69E-03 1307 425844.07 3732599.40 Residential 0.50 1.44E-03 1.01E-02 1308 425869.07 3732599.40 Residential 0.55 1.52E-03 1.05E-02 1309 425894.07 3732599.40 Residential 0.60 1.61E-03 1.11E-02 1310 425919.07 3732599.40 Residential 0.67 1.70E-03 1.16E-02 1311 425944.07 3732599.40 Residential 0.76 1.80E-03 1.22E-02 1312 425969.07 3732599.40 Residential 0.92 1.90E-03 1.28E-02 1313 426019.07 3732599.40 Worker 0.15 2.15E-03 1.41E-02 1314 426044.07 3732599.40 Worker 0.13 2.29E-03 1.45E-02 1315 426094.07 3732599.40 Worker 0.17 2.75E-03 1.54E-02 1316 426119.07 3732599.40 Worker 0.15 2.78E-03 1.57E-02 1317 426144.07 3732599.40 Worker 0.14 2.87E-03 1.59E-02 1318 426169.07 3732599.40 Residential 1.29 3.07E-03 1.63E-02 1319 426194.07 3732599.40 Residential 1.34 3.29E-03 1.65E-02 1320 426219.07 3732599.40 Residential 1.40 3.54E-03 1.67E-02 1321 426244.07 3732599.40 Residential 1.46 3.82E-03 1.64E-02 1322 426269.07 3732599.40 Residential 1.51 4.11E-03 1.60E-02 1323 426294.07 3732599.40 Residential 1.56 4.42E-03 1.57E-02 1324 426319.07 3732599.40 Residential 1.61 4.70E-03 1.53E-02 1325 426344.07 3732599.40 Residential 1.65 4.96E-03 1.50E-02 1326 426369.07 3732599.40 Residential 1.67 5.13E-03 1.48E-02 1327 426394.07 3732599.40 Residential 1.67 5.20E-03 1.43E-02 1328 426419.07 3732599.40 Residential 1.65 5.19E-03 1.36E-02 1329 426444.07 3732599.40 Residential 1.60 5.07E-03 1.28E-02 1330 426469.07 3732599.40 Residential 1.54 4.90E-03 1.23E-02 Page 19 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 1331 426494.07 3732599.40 Residential 1.47 4.68E-03 1.18E-02 1332 426519.07 3732599.40 Residential 1.39 4.45E-03 1.14E-02 1333 426544.07 3732599.40 Residential 1.31 4.19E-03 1.08E-02 1334 426569.07 3732599.40 Residential 1.22 3.92E-03 1.04E-02 1335 426594.07 3732599.40 Residential 1.15 3.68E-03 9.82E-03 1336 426619.07 3732599.40 Residential 1.07 3.43E-03 9.64E-03 1337 426644.07 3732599.40 Residential 1.00 3.20E-03 9.40E-03 1338 426669.07 3732599.40 Residential 0.93 2.98E-03 9.04E-03 1339 426694.07 3732599.40 Residential 0.89 2.88E-03 9.13E-03 1340 425769.07 3732624.40 Residential 0.38 1.16E-03 8.48E-03 1341 425794.07 3732624.40 Residential 0.41 1.22E-03 8.89E-03 1342 425819.07 3732624.40 Residential 0.44 1.28E-03 9.24E-03 1343 425844.07 3732624.40 Residential 0.47 1.35E-03 9.60E-03 1344 425869.07 3732624.40 Residential 0.50 1.42E-03 1.00E-02 1345 425894.07 3732624.40 Residential 0.55 1.50E-03 1.05E-02 1346 425919.07 3732624.40 Residential 0.60 1.58E-03 1.10E-02 1347 425944.07 3732624.40 Residential 0.67 1.66E-03 1.15E-02 1348 425969.07 3732624.40 Residential 0.76 1.75E-03 1.20E-02 1349 425994.07 3732624.40 Residential 0.94 1.85E-03 1.27E-02 1350 426069.07 3732624.40 Worker 0.16 2.37E-03 1.39E-02 1351 426094.07 3732624.40 Worker 0.13 2.37E-03 1.40E-02 1352 426119.07 3732624.40 Worker 0.12 2.45E-03 1.43E-02 1353 1 426144.07 3732624.40 Residential 1.10 2.58E-03 1.47E-02 1354 426169.07 3732624.40 Residential 1.11 2.73E-03 1.49E-02 1355 426194.07 3732624.40 Residential 1.15 2.91E-03 1.50E-02 1356 426219.07 3732624.40 Residential 1.21 3.12E-03 1.52E-02 1357 426244.07 3732624.40 Residential 1.26 3.35E-03 1.50E-02 1358 426269.07 3732624.40 Residential 1.31 3.60E-03 1.46E-02 1359 426294.07 3732624.40 Residential 1.37 3.87E-03 1.44E-02 1360 426319.07 3732624.40 Residential 1.41 4.11E-03 1.41E-02 1361 426344.07 3732624.40 Residential 1.46 4.35E-03 1.38E-02 1362 426419.07 3732624.40 Residential 1.49 4.65E-03 1.28E-02 1363 426444.07 3732624.40 Residential 1.46 4.60E-03 1.21E-02 1364 426469.07 3732624.40 Residential 1.42 4.49E-03 1.16E-02 1365 426494.07 3732624.40 Residential 1.36 4.33E-03 1.11E-02 1366 426519.07 3732624.40 Residential 1.30 4.13E-03 1.08E-02 1367 426544.07 3732624.40 Residential 1.23 3.92E-03 1.05E-02 1368 426569.07 3732624.40 Residential 1.16 3.71E-03 9.98E-03 1369 426594.07 3732624.40 Residential 1.09 3.49E-03 9.52E-03 1370 426619.07 3732624.40 Residential 1.03 3.29E-03 9.14E-03 1371 426644.07 3732624.40 Residential 0.96 3.08E-03 8.85E-03 1372 426669.07 3732624.40 Residential 0.90 2.88E-03 8.67E-03 1373 425794.07 3732649.40 Residential 0.38 1.15E-03 8.48E-03 1374 425819.07 3732649.40 Residential 0.41 1.21E-03 8.80E-03 1375 425844.07 3732649.40 Residential 0.43 1.27E-03 9.17E-03 1376 425869.07 3732649.40 Residential 0.47 1.33E-03 9.54E-03 1377 425894.07 3732649.40 Residential 0.50 1.40E-03 9.93E-03 1378 425919.07 3732649.40 Residential 0.54 1.46E-03 1.04E-02 1379 425944.07 3732649.40 Residential 0.59 1.53E-03 1.09E-02 1380 425969.07 3732649.40 Residential 0.66 1.61E-03 1.14E-02 1381 425994.07 3732649.40 Worker 0.09 1.70E-03 1.19E-02 1382 426019.07 3732649.40 Worker 0.11 1.80E-03 1.23E-02 1383 426044.07 3732649.40 Worker 0.14 1.97E-03 1.26E-02 1384 426069.07 3732649.40 Worker 0.12 2.05E-03 1.28E-02 1385 426094.07 3732649.40 Worker 0.11 2.12E-03 1.30E-02 1386 426119.07 3732649.40 Residential 0.96 2.21E-03 1.33E-02 1387 426144.07 3732649.40 Residential 0.96 2.32E-03 1.35E-02 1388 426169.07 3732649.40 Residential 0.98 2.44E-03 1.37E-02 1389 426194.07 3732649.40 Residential 1.01 2.59E-03 1.38E-02 1390 426219.07 3732649.40 Residential 1.05 2.77E-03 1.38E-02 1391 426244.07 3732649.40 Residential 1.10 2.97E-03 1.38E-02 1392 426269.07 3732649.40 Residential 1.16 3.18E-03 1.35E-02 1393 426294.07 3732649.40 Residential 1.20 3.40E-03 1.33E-02 1394 426319.07 3732649.40 Residential 1.25 3.63E-03 1.30E-02 1395 426444.07 3732649.40 Residential 1.34 4.17E-03 1.16E-02 1396 426469.07 3732649.40 Residential 1.30 E-03 1.09E-02 1397 426494.07 3732649.40 Residential 1.26 E-03 1.06E-02 1398 426519.07 3732649.40 Residential 1.21 E-03 13.67E 1.03E-02 1399 426544.07 3732649.40 Residential 1.16 -03 9.88E-03 1400 426569.07 3732649.40 Residential 1.10 E-03 9.62E-03 Page 20 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 1401 426594.07 3732649.40 Residential 1.04 3.31E-03 9.18E-03 1402 426619.07 3732649.40 Residential 0.98 3.13E-03 8.76E-03 1403 426644.07 3732649.40 Residential 0.93 2.95E-03 8.49E-03 1404 425819.07 3732674.40 Residential 0.38 1.14E-03 8.42E-03 1405 425844.07 3732674.40 Residential 0.40 1.20E-03 8.75E-03 1406 425869.07 3732674.40 Residential 0.43 1.25E-03 9.08E-03 1407 425894.07 3732674.40 Residential 0.46 1.31E-03 9.48E-03 1408 425919.07 3732674.40 Residential 0.49 1.36E-03 9.89E-03 1409 425944.07 3732674.40 Residential 0.53 1.42E-03 1.02E-02 1410 425969.07 3732674.40 Worker 0.07 1.49E-03 1.08E-02 1411 425994.07 3732674.40 Worker 0.08 1.57E-03 1.11E-02 1412 426019.07 3732674.40 Worker 0.08 1.65E-03 1.13E-02 1413 426044.07 3732674.40 Worker 0.09 1.74E-03 1.16E-02 1414 426069.07 3732674.40 Residential 0.84 1.83E-03 1.18E-02 1415 426094.07 3732674.40 Residential 0.84 1.92E-03 1.20E-02 1416 426119.07 3732674.40 Residential 0.84 2.00E-03 1.23E-02 1417 426144.07 3732674.40 Residential 0.85 2.10E-03 1.25E-02 1418 426169.07 3732674.40 Residential 0.86 2.20E-03 1.27E-02 1419 426194.07 3732674.40 Residential 0.89 2.33E-03 1.27E-02 1420 426219.07 3732674.40 Residential 0.93 2.48E-03 1.28E-02 1421 426244.07 3732674.40 Residential 0.98 2.64E-03 1.27E-02 1422 426269.07 3732674.40 Residential 1.02 2.83E-03 1.25E-02 1423 426294.07 3732674.40 Residential 1.07 3.02E-03 1.23E-02 1424 426494.07 3732674.40 Residential 1.16 3.66E-03 1.02E-02 1425 426519.07 3732674.40 Residential 1.13 3.56E-03 9.82E-03 1426 426544.07 3732674.40 Residential 1.08 3.43E-03 9.29E-03 1427 426569.07 3732674.40 Residential 1.04 3.28E-03 9.20E-03 1428 426594.07 3732674.40 Residential 0.99 3.13E-03 8.87E-03 1429 425844.07 3732699.40 Residential 0.38 1.13E-03 8.34E-03 1430 425869.07 3732699.40 Residential 0.40 1.17E-03 8.68E-03 1431 425894.07 3732699.40 Residential 0.42 1.22E-03 9.05E-03 1432 425919.07 3732699.40 Residential 0.45 1.27E-03 9.35E-03 1433 425944.07 3732699.40 Worker 0.06 1.33E-03 9.80E-03 1434 425969.07 3732699.40 Worker 0.06 1.39E-03 1.02E-02 1435 425994.07 3732699.40 Worker 0.07 1.45E-03 1.04E-02 1436 426019.07 3732699.40 Worker 0.07 1.51E-03 1.06E-02 1437 426044.07 3732699.40 Worker 0.08 1.59E-03 1.08E-02 1438 426069.07 3732699.40 Residential 0.70 1.67E-03 1.10E-02 1439 426094.07 3732699.40 Residential 0.72 1.74E-03 1.12E-02 1440 426119.07 3732699.40 Residential 0.73 1.82E-03 1.14E-02 1441 426144.07 3732699.40 Residential 0.75 1.91E-03 1.15E-02 1442 426169.07 3732699.40 Residential 0.77 2.00E-03 1.18E-02 1443 426194.07 3732699.40 Residential 0.80 2.11E-03 1.18E-02 1444 426219.07 3732699.40 Residential 0.83 2.23E-03 1.18E-02 1445 426244.07 3732699.40 Residential 0.87 2.38E-03 1.18E-02 1446 425869.07 3732724.40 Residential 0.37 1.10E-03 8.31E-03 1447 425894.07 3732724.40 Residential 0.39 1.14E-03 8.61E-03 1448 425919.07 3732724.40 Worker 0.05 1.19E-03 8.94E-03 1449 425944.07 3732724.40 Worker 0.05 1.24E-03 9.33E-03 1450 425969.07 3732724.40 Worker 0.05 1.29E-03 9.55E-03 1451 425994.07 3732724.40 Worker 0.06 1.34E-03 9.63E-03 1452 426019.07 3732724.40 Residential 0.53 1.41E-03 9.97E-03 1453 426044.07 3732724.40 Residential 0.57 1.47E-03 1.01E-02 1454 426069.07 3732724.40 Residential 0.60 1.53E-03 1.03E-02 1455 426094.07 3732724.40 Residential 0.63 1.60E-03 1.05E-02 1456 426119.07 3732724.40 Residential 0.65 1.67E-03 1.07E-02 1457 426144.07 3732724.40 Residential 0.67 1.74E-03 1.07E-02 1458 426169.07 3732724.40 Residential 0.69 1.83E-03 1.10E-02 1459 426194.07 3732724.40 Residential 0.72 1.92E-03 1.10E-02 1460 426219.07 3732724.40 Residential 0.75 2.03E-03 1.10E-02 1461 425869.07 3732749.40 Residential 0.35 1.04E-03 7.96E-03 1462 425894.07 3732749.40 Worker 0.04 1.08E-03 8.17E-03 1463 425919.07 3732749.40 Worker 0.04 1.12E-03 8.56E-03 1464 425944.07 3732749.40 Worker 0.05 1.16E-03 8.87E-03 1465 425969.07 3732749.40 worker 0.05 1.21E-03 8.99E-03 1466 425994.07 3732749.40 Residential 0.45 1.26E-03 9.16E-03 1467 426019.07 3732749.40 Residential 0.47 1.31E-03 9.36E-03 1468 426044.07 3732749.40 Residential 0.50 1.36E-03 9.52E-03 1469 426069.07 3732749.40 Residential 0.53 1.42E-03 9.66E-03 1470 426094.07 3732749.40 Residential 0.56 1.48E-03 9.85E-03 Page 21 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California Receptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Type Cancer Risk (in a million) Chronic Hazard Index Acute Hazard Index 1471 426119.07 3732749.40 Residential 0.58 1.54E-03 9.99E-03 1472 426144.07 3732749.40 Residential 0.60 1.60E-03 1.00E-02 1473 426169.07 3732749.40 Residential 0.62 1.68E-03 1.02E-02 1474 426194.07 3732749.40 Residential 0.64 1.75E-03 1.04E-02 1475 425894.07 3732774.40 Worker 0.04 1.01E-03 7.88E-03 1476 425919.07 3732774.40 Worker 0.04 1.05E-03 8.18E-03 1477 425944.07 3732774.40 Worker 0.04 1.09E-03 8.34E-03 1478 425969.07 3732774.40 Residential 0.39 1.13E-03 8.45E-03 1479 425994.07 3732774.40 Residential 0.41 1.17E-03 8.69E-03 1480 426019.07 3732774.40 Residential 0.43 1.22E-03 8.80E-03 1481 426044.07 3732774.40 Residential 0.45 1.27E-03 8.92E-03 1482 426069.07 3732774.40 Residential 0.48 1.32E-03 9.10E-03 1483 426094.07 3732774.40 Residential 0.50 1.37E-03 9.24E-03 1484 426119.07 3732774.40 Residential 0.52 1.42E-03 9.37E-03 1485 426144.07 3732774.40 Residential 0.54 1.48E-03 9.44E-03 1486 426169.07 3732774.40 Residential 0.56 1.55E-03 9.60E-03 1487 425919.07 3732799.40 Worker 0.04 9.92E-04 7.81E-03 1488 425944.07 3732799.40 Residential 0.34 1.02E-03 7.92E-03 1489 425969.07 3732799.40 Residential 0.36 1.06E-03 8.00E-03 1490 425994.07 3732799.40 Residential 0.38 1.10E-03 8.21E-03 1491 426019.07 3732799.40 Residential 0.40 1.14E-03 8.32E-03 1492 426044.07 3732799.40 Residential 0.41 1.18E-03 8.42E-03 1493 426069.07 3732799.40 Residential 0.44 1.23E-03 8.57E-03 1494 426094.07 3732799.40 Residential 0.46 1.27E-03 8.70E-03 1495 426119.07 3732799.40 Residential 0.47 1.32E-03 8.81E-03 1496 426144.07 3732799.40 Residential 0.49 1.37E-03 8.90E-03 1497 425969.07 3732824.40 Residential 0.33 1.00E-03 7.66E-03 1498 425994.07 3732824.40 Residential 0.35 1.03E-03 7.78E-03 1499 426019.07 3732824.40 Residential 0.37 1.07E-03 7.89E-03 1500 426044.07 3732824.40 Residential 0.38 1.11E-03 7.97E-03 1501 426069.07 3732824.40 Residential 0.40 1.15E-03 8.11E-03 1502 426094.07 3732824.40 Residential 0.42 1.19E-03 8.23E-03 1503 426241.74 3731472.06 Worker 0.02 5.83E-04 5.72E-03 1504 426341.74 3731472.06 Worker 0.02 5.66E-04 5.69E-03 1505 426441.74 3731472.06 Worker 0.02 5.37E-04 5.47E-03 1506 426541.74 3731472.06 Worker 0.02 5.00E-04 5.42E-03 1507 426641.74 3731472.06 Worker 0.01 4.59E-04 5.13E-03 1508 426141.74 3731572.06 Worker 0.02 7.55E-04 7.58E-03 1509 426241.74 3731572.06 Worker 0.02 7.43E-04 7.01E-03 1510 426341.74 3731572.06 Worker 0.02 7.16E-04 7.00E-03 1511 426441.74 3731572.06 Worker 0.02 6.70E-04 6.70E-03 1512 426541.74 3731572.06 Worker 0.02 6.11E-04 6.34E-03 1513 426641.74 3731572.06 Worker 0.02 5.48E-04 5.68E-03 1514 426741.74 3731572.06 Worker 0.02 4.86E-04 5.23E-03 1515 426141.74 3731672.06 Worker 0.03 1.01E-03 9.44E-03 1516 426241.74 3731672.06 Worker 0.03 9.89E-04 8.87E-03 1517 426641.74 3731672.06 Worker 0.02 6.64E-04 6.68E-03 1518 426741.74 3731672.06 Worker 0.02 5.72E-04 5.90E-03 1519 426841.74 3731672.06 Worker 0.02 4.92E-04 5.30E-03 1520 426041.74 3731772.06 Worker 0.05 1.38E-03 1.08E-02 1521 426141.74 3731772.06 Worker 0.05 1.42E-03 1.20E-02 1522 426741.74 3731772.06 Worker 0.02 6.75E-04 6.92E-03 1523 426841.74 3731772.06 Worker 0.02 5.65E-04 5.75E-03 1524 426941.74 3731772.06 Worker 0.02 4.77E-04 5.15E-03 1525 425441.74 3731872.06 Worker 0.02 5.29E-04 5.12E-03 1526 425541.74 3731872.06 Worker 0.02 6.43E-04 6.12E-03 1527 425641.74 3731872.06 Worker 0.03 7.97E-04 7.13E-03 1528 425741.74 3731872.06 Worker 0.03 1.01E-03 8.39E-03 1529 425841.74 3731872.06 Worker 0.04 1.29E-03 1.01E-02 1530 425941.74 3731872.06 Worker 0.06 1.65E-03 1.25E-02 1531 426041.74 3731872.06 Worker 0.07 2.02E-03 1.47E-02 1532 426141.74 3731872.06 Worker 0.07 2.20E-03 1.56E-02 1533 426641.74 3731872.06 Worker 0.03 1.00E-03 9.45E-03 1534 426741.74 3731872.06 Worker 0.03 7.98E-04 7.70E-03 1535 426841.74 3731872.06 Worker 0.02 6.47E-04 6.51E-03 1536 426941.74 3731872.06 Worker 0.02 5.36E-04 5.41E-03 1537 427041.74 3731872.06 Worker 0.01 4.52E-04 4.81E-03 1538 425341.74 3731972.06 Residential 0.14 4.68E-04 4.61E-03 1539 425441.74 3731972.06 Worker 0.02 5.64E-04 5.50E-03 1540 425541.74 3731972.06 Worker 0.02 7.01E-04 6.51E-03 Page 22 of 23 Ramboll Table C-1. Health Risk Assessment Results for All Receptors Tustin Ranch Costco Fuel Station Orange County, California :eptor ID X -Coordinate (m) Y -Coordinate (m) Receptor Ty 1541 425641.74 3731972.06 Worker 1542 425741.74 3731972.06 Worker 1543 425841.74 3731972.06 Worker 1544 425941.74 3731972.06 Worker 1545 426041.74 3731972.06 Worker 1546 426941.74 3731972.06 Worker 1547 427041.74 3731972.06 Worker 1548 425341.74 3732072.06 Worker 1549 425441.74 3732072.06 Worker 1550 425841.74 3732072.06 Worker 1551 425941.74 3732072.06 Worker 1552 426941.74 3732072.06 Worker 1553 427041.74 3732072.06 Worker 1554 425341.74 3732172.06 Worker 1555 425441.74 3732172.06 Worker 1556 426941.74 3732172.06 Worker 1557 427041.74 3732172.06 Worker 1558 425341.74 3732272.06 Residential 1559 425441.74 3732272.06 Residential 1560 426841.74 3732272.06 Residential 1561 426941.74 3732272.06 Worker 1562 427041.74 3732272.06 Worker 1563 425341.74 3732372.06 Residential 1564 425441.74 3732372.06 Residential 1565 425541.74 3732372.06 Residential 1566 426741.74 3732372.06 Residential 1567 426841.74 3732372.06 Worker 1568 426941.74 3732372.06 Worker 1569 425441.74 3732472.06 Residential 1570 425541.74 3732472.06 Residential 1571 426841.74 3732472.06 Worker 1572 426941.74 3732472.06 Worker 1573 425541.74 3732572.06 Residential 1574 425641.74 3732572.06 Residential 1575 426741.74 3732572.06 Residential 1576 426841.74 3732572.06 Residential 1577 425541.74 3732672.06 Residential 1578 425641.74 3732672.06 Residential 1579 425741.74 3732672.06 Residential 1580 426341.74 3732672.06 Residential 1581 426441.74 3732672.06 Residential 1582 426641.74 3732672.06 Residential 1583 426741.74 3732672.06 Residential 1584 426841.74 3732672.06 Residential 1585 425641.74 3732772.06 Residential 1586 425741.74 3732772.06 Residential 1587 425841.74 3732772.06 Residential 1588 426241.74 3732772.06 Residential 1589 426341.74 3732772.06 Residential 1590 426441.74 3732772.06 Residential 1591 426541.74 3732772.06 Residential 1592 426641.74 3732772.06 Residential 1593 426741.74 3732772.06 Residential 1594 425741.74 3732872.06 Worker 1595 425841.74 3732872.06 Worker 1596 425941.74 3732872.06 Residential 1597 426041.74 3732872.06 Residential 1598 426141.74 3732872.06 Residential 1599 426241.74 3732872.06 Residential 1600 426341.74 3732872.06 Residential 1601 426441.74 3732872.06 Residential 1602 426541.74 3732872.06 Residential 1603 426641.74 3732872.06 Residential 1604 425841.74 3732972.06 Residential 1605 425941.74 3732972.06 Residential 1606 426041.74 3732972.06 Residential 1607 426141.74 3732972.06 Residential 1608 426241.74 3732972.06 1 Residential Cancer Risk in a million) Chronic Hazard Index Acute Hazard Index 0.03 8.91E-04 7.79E-03 0.04 1.17E-03 9.90E-03 0.05 1.60E-03 1.22E-02 0.07 2.24E-03 1.57E-02 0.10 3.17E-03 2.11E-02 0.02 6.05E-04 5.99E-03 0.02 5.05E-04 5.14E-03 0.02 4.87E-04 4.88E-03 0.02 5.95E-04 5.67E-03 0.06 1.91E-03 1.45E-02 0.10 3.01E-03 2.06E-02 0.02 7.02E-04 6.36E-03 0.02 5.78E-04 5.43E-03 0.02 4.99E-04 4.94E-03 0.02 6.14E-04 5.83E-03 0.03 8.45E-04 6.37E-03 0.02 6.80E-04 5.47E-03 0.15 5.06E-04 4.96E-03 0.19 6.25E-04 5.89E-03 0.40 1.35E-03 7.79E-03 0.03 1.02E-03 6.36E-03 0.03 8.04E-04 5.44E-03 0.15 5.14E-04 4.95E-03 0.19 6.35E-04 5.76E-03 0.25 8.10E-04 6.81E-03 0.71 2.32E-03 9.58E-03 0.06 1.64E-03 7.82E-03 0.04 1.22E-03 6.39E-03 0.19 6.43E-04 5.46E-03 0.25 8.12E-04 6.56E-03 0.07 1.96E-03 8.24E-03 0.05 1.45E-03 6.67E-03 0.24 7.68E-04 6.06E-03 0.30 9.55E-04 7.24E-03 0.79 2.57E-03 8.53E-03 0.62 2.04E-03 7.94E-03 0.21 6.94E-04 5.57E-03 0.26 8.30E-04 6.45E-03 0.32 9.98E-04 7.56E-03 1.16 3.42E-03 1.19E-02 1.23 3.82E-03 1.10E-02 0.90 2.85E-03 8.18E-03 0.75 2.42E-03 8.36E-03 0.60 1.96E-03 7.42E-03 0.22 7.12E-04 5.75E-03 0.26 8.25E-04 6.48E-03 0.31 9.47E-04 7.39E-03 0.64 1.79E-03 9.84E-03 0.77 2.25E-03 9.35E-03 0.86 2.63E-03 8.89E-03 0.84 2.62E-03 7.95E-03 0.77 2.45E-03 7.95E-03 0.66 2.14E-03 7.59E-03 0.03 6.84E-04 5.63E-03 0.03 7.67E-04 6.30E-03 0.28 8.66E-04 6.81E-03 0.33 9.82E-04 7.24E-03 0.39 1.12E-03 7.70E-03 0.45 1.31E-03 7.82E-03 0.54 1.59E-03 7.54E-03 0.62 1.88E-03 7.14E-03 0.66 2.08E-03 7.65E-03 0.63 2.01E-03 7.19E-03 0.20 6.35E-04 5.43E-03 0.22 7.07E-04 5.82E-03 0.26 7.85E-04 6.12E-03 0.29 8.76E-04 6.38E-03 0.34 1.01E-03 6.41E-03 Page 23 of 23 Ramboll