# CAPCOA

AirToxics "Hot Spots" Program

Prepared by the Toxics Committee ofthe

California Air Pollution Control Officers Association (CAPCOA) September 1996



# --------- Auto Bodyshop lndustrywide Risk Assessment Guidelines

### CaliforniaAirPollution Control Officers Association (CAPCOA)

Auto Bodyshop Industrywide RiskAssessment Guidelines
Preparedbythe Toxics Committee ofthe CaliforniaAirPollutionControl Officers Association

Approved by

The Board ofthe CaliforniaAirPollutionControl Officers Association on September26, 1996 

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## Auto Bodyshop Task Force

Ray Asregadoo Richard Bode Janette Brooks Jim Collins David Craft Randy Frazier Greg Harris Susan Kaiser Janis Lackey Carolyn Lozo Joe Petrini CliffPopejoy Tom Roemer, Chairman Debbie Ryan Tony Servin Terri Thomas Mark Watkins Dodie Weiner

September 1996 California Air Resources Board California Air Resources Board California Air Resources Board Office ofEnvironmental Health Hazard Assessment Monterey Bay Unified APCD Bay Area AQMD California Air Resources Board California Air Resources Board California Air Resources Board California Air Resources Board Santa Barbara County APCD California Air Resources Board San Luis Obispo County APCD San Diego County APCD California Air Resources Board Ventura County APCD California Air Resources Board California Air Resources Board 

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### 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2.0 2.1 2.2 2.3 3.0 4.0 4.1 4.2 4.3 4.4 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.4.6 4.4.7 4.4.8 5.0 6.0 6.1 6.2 6.3 6.4 6.5 6.5.1 6.5.2 6.6 6.6.1 6.6.2 6.6.3 6.7 6.8 7.0 AB 2588 

### INDUSTRYWIDE AIR TOXICS EMISSION INVENTORY AND HEALTH RISK ASSESSMENT FOR AUTOMOTIVE SURFACE COATING

Executive Summary Approach Coating Composition Coating Consumption Coating Profiles Application Method Air Pollution Controls Dispersion Modeling Use ofGuidelines Introduction 

### Table of Contents

The Air Toxics "Hot Spots" Program Document Preparation Limits and Scope ofGuidelines Description ofIndustry Emission Estimation Emitted Compounds and Generic Formulations Resources for Developing a List ofBodyshops The Bodyshop Survey Form Emission Calculations VOC Calculations Particulate Emission Calculations Transfer Efficiency Capture Efficiency Fall Out Fraction Booth Control Efficiency Fractional Portion ofToxic Compound Transmitting Inventory Data to CARB Facility Prioritization "Scoping" Health Risk Assessment Hazard Identification Dose-Response Assessment Exposure Assessment Risk Characterization "Scoping" Level Release Scenarios and Dispersion Modeling Dispersion Modeling Results Comparative Dispersion Modeling and Implications for Risk Reduction "Scoping" Level Risk Assessment Methodology Cancer Risk Calculation Chronic Noncancer Risk Calculation Acute Noncancer Risk Calculation Sample Applications Refined Health Risk Assessment and Special Applications References

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### List ofTables Table 1 - Transfer Efficiencies for Coating Applications Table 2 - Control Efficiencies for Coating Applications Table 3 - Toxic Metals in Pigments Table 4 - Description ofGeneric Modeling Source Categories Table 5 - Maximum Calculated Dispersion Factors Table 6 - Carcinogenic Risk Worksheet Table 7 - Non-Cancer Chronic Health Hazard Index Worksheet Table 8 - Non-Cancer Acute Health Hazard Index Worksheet Table 9- Summary Maximum Results ofGeneric Risk Assessment for a Generic Auto Bodyshop

Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Appendix G Appendix 

### H Appendix I Appendix 1 

### Appendix K Appendix L



### September 

### Appendices

- Glossary and Acronyms

- Flowchart

- List ofCompounds Addressed in Health Risk Assessment With Toxicity Values

- CARB Manufacturers Survey

- Estimation ofGeneric Automotive Formulations

- Bodyshop Survey Form

- Fall Out Fraction

- Data Submittal to CARB

- Prioritization Procedures

- Dispersion Model Inputs and Results

- Detailed Results ofSample Risk Assessment

- Scoping Assessment "Cookbook" for Districts

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## 1.0 Executive Summary 1.1 Approach Auto bodyshops (bodyshops) are subject to reporting under the Air Toxics "Hot Spots" Information and Assessment Act of 1987. Bodyshops are considered industrywide sources which requires that air districts prepare the toxics emissions inventory and health risk assessment, as needed. Auto bodyshops differ from other industrywide categories like gas stations and drycleaners because the emissions are more complex and variable. However, release parameters for the most part can be effectively modeled. The industrywide inventory and health risk assessment guideline addresses toxic emissions from coating applications and associated processes. Emissions from activities such as body repair work were assumed to be negligible. Emissions estimates and impacts from auto bodyshops are a function of: coating composition coating consumption coating profiles application method air pollution controls dispersion modeling 

### 1.2 Coating Composition Coatings have two basic parts: solids, to coat the vehicle; and solvents, to carry the solids. Both solids and solvents content may vary with: Coating type (primer, topcoat, etc.), Coating manufacturers, Color (Some colors contain more toxic metals). 

### 1.3 Coating Consumption The guidelines address the consumption rate of coatings and solvents for individual shops by providing a model survey form to be sent to bodyshops. The survey requests information about the consumption of various coating products and solvents as a

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### function of manufacturer. Additional data about application methods, booths and filters, and stack parameters are requested for emission calculations and modeling. 

### 1.4 Coating Profiles
To reduce the effort required to collect individual toxic emissions inventories, CARB surveyed coating manufacturers on the generic composition oftheir products according to product type (primer, topcoat, etc.). The survey requested sales volume percent of products in California. The results were used to develop "generic" coating profiles, which are sales weighted average compositions by product type for each manufacturer. Using throughput data for each type of product consumed in an individual bodyshop, an estimate ofthe toxic emissions can be developed.
Use of the generic profiles will overestimate emissions from some shops and underestimate others for the survey year. However, emissions from bodyshops can vary from year to year, so the method outlined in the guidelines should result in a reasonable estimate ofaverage emissions over time. 

### 1.5 Application Method The application method of a coating affects the transfer efficiency and the resulting emissions of solids. All solvent was assumed to be emitted. The type of spray gun influences the transfer efficiency. Since coating solids may contain highly toxic compounds, such as hexavalent chromium, assumptions concerning transfer efficiency and fall out fraction can be critical to health risk assessment results. Data from the U.S. EPA and a recent study on aerospace coating application efficiency were used to develop recommended transfer efficiency and fall out fraction values for the assessment. 

### 1.6 Air Pollution Controls
Most auto body coating is done in spray booths with filtration systems to control the emissions of solids. The industrywide assessment includes recommended values for efficiencies ofcommonly used spray booth filters. Painting cars without a spray booth and filters may result in high solids emissions and potentially significant health impacts. 

### 1.7 Dispersion Modeling Dispersion modeling was addressed for three basic release types: Unobstructed stack, Stack with a rain cap or similar vertical obstruction, Fugitive

- Painting with no booth or dedicated exhaust system

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### Within these basic release types, several combinations of representative stack parameters (height, diameter, flow rate) were modeled. Building downwash was considered. Several sets of meteorological data were used in the dispersion modeling, including screening data and actual meteorological data from two different locations (San Diego- coastal and inland). The guidelines include dispersion modeling results in the form of tables and graphs of relative dispersion (X/Q) for each release scenario and each meteorological data set examined at various distances from the facility. These tables can be used to estimate the toxic impact from a facility. 1.8 

### Use ofGuidelines 

### The guidelines provide a mechanism and procedure to survey local auto bodyshops and develop a toxic emissions inventory based simply on coating and solvent throughput. Using the decision tree procedures contained within the guideline, a priority score and an estimate of the health risk can be determined, if needed. If 

### the screening risk assessment indicates that the source may pose a significant health risk, the guidelines suggest that a refined risk assessment using site specific release data, meteorological data, and emissions information be performed. The guidelines include an example inventory and health risk assessment and blank forms that can be used as a format for performing an industrywide assessment. 

## 2.0 Introduction
2.1 The Air 

### Toxics "Hot 

### Spots" Program 

### The Air Toxics "Hot Spots" Information and Assessment Act of 1987 (Act, AB 2588) was adopted by the California Legislature in response to public concern about airborne releases oftoxic chemicals. AB 2588 was enacted to gather information and assess the effects of routine or predictable toxic air emissions on public health. Facility owners subject to the Act must produce a comprehensive inventory of routine releases from a list of hundreds of toxic compounds. Based on the inventory results, some facility owners are required to perform health risk assessments that evaluate the toxic impact these emissions might have on the health of people who live or work around the facility. Under AB 2588, the public is required to be notified of significant health risks resulting from emissions from nearby facilities. AB 2588 was amended in 1993 by SB 1731, Facility Toxic Air Contaminant Risk Reduction Audit and Plan, to require that significant health risks discovered through the program be reduced.

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### Under specified circumstances, state law requires local air districts to prepare toxic emissions inventories and health risk assessments for certain classes of businesses. These classes ofbusinesses are referred to as "industrywide" facilities. Industrywide inventories are required if: (1) a class of similar facilities (as determined by their SIC code) subject to AB 2588 is composed primarily of small businesses; (2) individual compliance would impose a severe financial hardship; and (3) emissions from the facilities can be easily and generically quantified. Auto bodyshops constitute such an industrywide group. 

### 2.2 Document Preparation This document was prepared by the Auto Bodyshop Task Force (ABTF) to assist local air districts in assessing emissions from auto bodyshops. The task force was formed at the direction of the CAPCOA Toxics Committee. The eighteen member ABTF was made up of representatives from six air districts, the California Air Resources Board (CARB), and the Office of Environmental Health Hazard Assessment (OEHHA). The goal of the ABTF was to generate a set of guidelines to assist local air districts in developing generic toxic emissions inventories and health risk assessments for automotive coating operations.
To this end, the ABTF met over a two year period to formalize a methodology for quantifying and assessing the impacts of toxic emissions from automotive coating operations. This document provides step by step procedures showing how to collect the necessary information from body shops, use this information to calculate a generic emissions inventory, develop a risk ranking or facility prioritization, and submit the results in an appropriate format to the CARB. These guidelines are not regulatory and are only advisory. Each District is responsible for its own compliance with the Act. 

### 2.3 Limits and Scope of Guidelines These guidelines only cover industrywide air toxic emissions inventories and health risk assessments for automotive and mobile equipment refinishing. This category includes automobile dealerships where body and paint work is performed, but it does not cover coating operations associated with automobile manufacturing. The assessment only covers coating and associated emissions. Operations such as sanding, fiberglassing, and use ofbody filler are not believed to be significant sources of air toxics emissions and are not included. Emissions of both solid and volatile toxics can be controlled using add-on control equipment. Organic emissions may be controlled by carbon adsorption or incineration.

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### Use of this type of control equipment is very rare in the automotive surface coating industry, and is not addressed. Facilities with add-on controls should be evaluated individually. Equipment, such as dry filters, that controls particulate emissions is commonly used and is addressed.
The industrywide inventory and risk assessment described in this document consists of the following general steps: facility identification and surveying, generic emission quantification, determination of basic facility configuration, facility prioritization, dispersion modeling, health risk assessment, and submittal of inventory data to the CARB. Not all of these steps are necessary for all facilities. For example, a health risk assessment is not necessary for a facility that is not high priority. Likewise, a refined inventory and health risk assessment is not necessary if the scoping risk assessment indicates that the health risk from the facility is not "significant", as defined by the air District. Facilities which, as a result of this process, are identified as "significant risk facilities" may (at the discretion of the District) opt to perform a sitespecific risk assessment with more precise data related to their site.
These Guidelines provide a brief overview of the automotive bodyshop industry and include a glossary of terms commonly used in risk assessment and the coating industry (see Appendix A). Appendix B provides a flow chart or decision tree for evaluating a source. The Guidelines follow the course of the flow chart and include examples to clarify how the emissions inventory is generated and how facility emissions are prioritized, assigned a risk, and reported to the CARB. It 

### next provides a description of how volatile and particulate emissions can be estimated using information provided in the facility survey and from "generic" coating composition data provided by the CARB. This is followed by sections on facility prioritization, "generic" dispersion modeling, and the "scoping" health risk assessment. The results ofthe ABTF's sample health risk assessment are presented and discussed. 

## 3.0 Description ofIndustry
In order to complete an industrywide inventory and health risk assessment, an understanding of how a bodyshop operates may be helpful. Most auto bodyshops operate as job shops. That is, they paint single vehicles for individual customers. Many are small businesses. The materials they use will vary depending on specificjob requirements. To account for these variations, generic formulations were developed for each category of product and for each manufacturer. The generic formulations represent the chemical constituents of the most commonly found products that are sold in California. YOC and particulate emiSSions are generated during most phases of repamng an automotive surface which includes vehicle preparation, coating application, and equipment cleanup. Vehicle preparation may start with the repair orreplacement ofthe

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### metal and plastic components (body work). Extensive effort is then put into preparing and cleaning the plastic or metal surface to be refinished to ensure proper adhesion of the coating and the appearance of color uniformity. Emissions from this step, except solvent and cleaner use, are not expected to be significant and are not considered in this evaluation.
A key ingredient to a quality coatingjob is surface preparation and cleanliness. After repair, the surface undergoes several cleaning, sanding, and coating steps. Surface preparation is generally performed in two stages. First, the surface is washed thoroughly with a detergent and water to remove dirt and surface contaminants. Then the surface is cleaned with a high VOC solvent to remove wax, grease, and other contaminants. The area to be refinished is then sanded to smooth or remove the old finish and may be given a final solvent wipe to remove fingerprints and the like.
After the surface has been sanded and cleaned, it is treated with an undercoat or primer. Primers provide corrosion resistance, fill in surface imperfections, and provide a bond for the topcoat. There are four basic types of undercoats: precoat, primer surfacer, primer sealer, and primer.
The primary function of a precoat is to maintain a thin barrier between a metal surface and a subsequent waterborne primer to avoid pinpoint corrosion. It 

### is not intended for use to fill scratches. Precoats provide adhesion to the surface and produce a corrosion resistant foundation. Precoats are generally followed by a primer surfacer.
A primer surfacer is a high solids primer providing adhesion, corrosion protection, and build. The solids fill in small imperfections in the substrate. This surface is usually sanded after application to provide a uniform surface for the topcoat. A primer-sealer improves adhesion of the topcoat and provides a seal between the primer and the topcoat to prevent solvent penetration. Sealing is also necessary to promote topcoat adhesion when a topcoat with a different formula is used on top of another incompatible coating. This step is necessary for adhesion to plastic.
A primer is a general term used to describe a product that is a bond coating used to prepare a surface to successfully accept and hold subsequent finish coats. Their purpose is to provide maximum adhesion and a corrosion resistant foundation. Waterborne primers are an alternative to the conventional solvent-borne primers and offer the advantages of higher filling and sealing capability, but may require longer drying time. In addition, waterborne primers are impervious to attack by solvents. They prevent sand scratches from swelling in the old surface through solvent penetration by a solvent-borne primer or topcoat.

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### Topcoats are generally applied as a series ofcoats over a primer and determine the final color of the finished area. Since most repairs are spot and panel repairs, a major concern is matching the original equipment manufacturer (OEM) color as closely as possible by blending the repair into the surrounding area. In some cases a heavily reduced blend coat is used to further improve the color match. As OEM topcoats have become more complex, the precise matching of original colors by refinishers has become more difficult, and in many cases, has resulted in increased solvent usage to achieve color blending. Topcoats come in single coat, two coat (basecoat/clearcoat) systems including solid colors or metallics, and multi-stage systems. Metallic finishes differ from solid color finishes because they contain small metal flakes suspended in a mixture of binders, solvent, and pigment. These finishes are among the most difficult to color match. Presently, most of the European, Japanese, and U.S. automotive manufacturers are using high solid basecoat/clearcoat finishes on their vehicles. Two coat and multistage systems are commonly found in the automotive refinishing industry. The system utilizes either an acrylic lacquer or a polyurethane clear coat over a base color (or an acrylic enamel color basecoat with an acrylic urethane clearcoat). Low VOC waterborne clearcoats are now in use and are important when refinishing with a metallic finish. The two coat or multistage system can reduce overall emissions by allowing a high quality and higher VOC basecoat to be used in conjunction with a lower VOC content clearcoat. 

## 4.0 Emission Estimation
Some factors that influence the magnitude of emissions and, subsequently, the health impact include the specific coatings used, application methods, the use of or lack of a spray booth, and the type ofbooth controls. This section describes how a generic toxic emissions inventory can be developed for the typical bodyshop.
4.1 Emitted Compounds and Generic Formulations There are now over 700 toxic compounds listed under AB 2588. In an effort to simplify data collection, twenty of these toxics were determined by the ABTF and CARB to be the most likely constituents to be found in automotive coatings in potentially significant amounts. A listing of these compounds and their toxicity values is included as Appendix C. The composition of coatings and associated products varies widely between product type, manufacturer, and color. Therefore, the ABTF adopted categories for typical coatings used in many VOC limit rules for automotive coating operations. Using the list of most likely constituents and the categories of coatings and solvents, the CARB

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### contacted the major manufacturers of coatings sold in California through the cooperation of the National Paint and Coating Manufacturers Association. The manufacturers included BASF, DuPont, Nason, PPG, Sherwin Williams, and AKZO. According to the Association, this accounted for over 95% of the coatings sold in California. The CARB developed a coating manufacturer survey form that requested product formulations and relative sales information for all products sold in California containing these components in amounts greater than 1%. An example of a manufacturer's survey questionnaire is in Appendix D. The generic formulation data is available to districts on diskette from CARB.
From the manufacturers' data, the CARB generated generic coating formulations. The listing of the coating types and generic profiles, along with a description of their development are contained in Appendix E. As coating compositions vary over time, the data was collected for formulations representing coatings supplied before and after the implementation ofautomobile coating operation rules on January 1, 1995.
From the generic formulations, a toxic emission inventory can be developed for a bodyshop knowing the brand of products used and the number of gallons of each product used during the inventory year. To complete the toxic emissions inventory, it is only necessary to survey local bodyshops using a simple form, and process the data using simplified equations to estimate emissions. 

### 4.2 Resources for Developing a List of Bodyshops The most readily available resource of local bodyshops is the phone book. Most bodyshops advertise in the yellow pages. Additionally, names and addresses can be obtained from local distributors of coatings and solvents. Finally, there may be a chapter of an industrial organization such as the California Autobody Association (CAA). This and similar organizations can bevery helpful in locating local bodyshops. They can provide a forum to contact and inform members about the Air Toxics "Hot Spots" program. Additionally, they can provide a mechanism to assist members in completing the survey form described in the next section. 

### 4.3 The Bodyshop Survey Form
To assist air districts in collecting the data necessary to generate a toxic emiSSions inventory, the ABTF developed a survey form and a suggested cover letter to send to local bodyshops. The form is located in Appendix F. The FACILITY INFORMATION section is self explanatory. A source may not be aware ofor not be assigned a facility identification (Fac ID). A permit to operate may not have been issued. The sources can be instructed to leave these blank.

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### The data requested in the EQUIPMENT INFORMATION is required to complete the emission calculations and is used as input into the dispersion calculation. Most of the requested responses are selfevident. Building dimensions can be best estimates. 

### Ifthe booth is not heated, the exhaust temperature can be assumed to be the average ambient temperature. If a booth is used, it is important to know whether or not a raincap is used on a stack and the blower capacity ofthe fan motor. These parameters determine the amount of or lack of plume rise. This will be discussed further in the section on dispersion modeling. A technical data sheet describing the filtering efficiency of the type of filters used in the booth should be carefully reviewed. The filter supplier can provide this information. A review of filter data by the ABTF indicated that filter efficiencies varied greatly between foam and paper filters.
Toxic emissions are calculated using the data supplied on the reverse side ofthe survey. It 

### is important for the bodyshop owner or operator to fill out a separate form for each brand ofcoating. For example, if DuPont and AKZO products are used, a COATING AND SOLVENT USAGE INFORMATION form should be filled out for both DuPont products and AKZO products. This is done because the generic formulations for these two manufacturers are not identical. If the bodyshop owner or operator is not sure which coating category a specific product should be placed in, the regional distributor ofthat product has that information. Company representatives are usually informed on state VOC limit rules. Blanks were left in the solvent entries to include the VOC content ofthe solvents used.
As a quality assurance check, ensure that the total gallons of solvent and coating listed at the top of the form equals the total at the bottom. Additionally, if the gallons of material that goes to hazardous waste is not known but is desired to be included, some districts use a default value between 0-5%. 

### 4.4 Emission Calculations By using the generic coatings information from CARB and the amounts of these coatings used by a bodyshop, generic toxic emissions can be calculated. The compounds addressed in this assessment are divided into two groups: volatile and solid. 

### 4.4.1 VOC Calculations
All volatile compounds contained in coating products are assumed to be emitted through evaporation. Volatile compounds are generally solvents. The amount of a volatile toxic compound emitted is equal to the amount of the compound contained in the product used. They are not reduced in concentration by most filters but pass through and can be described by the following equation:

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### Where: 

### By = 

### Emissions ofvolatile compound, lb/yror lb/hr VP = 

### Volume ofproduct used, gal/yr or gal/hr WP = 

### Amount ofproduct shipped offsite as hazardous waste, %/100 D = 

### Density ofproduct, lb/gal 

### Xc = 

### Mass fraction ofvolatile compound in product, %/100
For example, to calculate the emissions oftoluene, the bodyshop survey form would be reviewed and all categories containing toluene would be listed. Next, the number of gallons of each category used would be recorded, corrected for any materials sent off site as hazardous waste. The CARB generic formulation would then be consulted to determine the most likely mass fraction of toluene found in that category for that manufacturer. If a manufacturer is not included in the survey, the material safety data sheets for the individual products should be consulted. Generic toluene emissions would then be estimated by multiplying the gallons used per year of each category in which toluene was a constituent by the density of the product and by the mass fraction toluene for that category and manufacturer, as estimated by the CARB. This process would be repeated for each constituent and category to develop the organic emissions component of the toxic emissions inventory. The total toluene is the sum of the contributions from each category. The process is readily completed using a spreadsheet format.
For example, for an uncontrolled source using 47 gallons ofproduct with a density of 7.28 lb/gal and a toluene content of 11.9%, the mass of toluene generated from that product during the emissions year, less that which goes to hazardous waste, would be: 

### Ev = 

### (47- (51100 X 

### 47)) X 

### 7.28 X 

### 11.91100 

## = 39 lb/yr 

### 4.4.2 Par1iculate Emission Calculations
Emissions of solids are influenced by transfer efficiency, capture efficiency, and control efficiency. Solids consist of polymers, pigments, and other materials that are deposited on the vehicle. Unlike volatile compounds, the amount of solid compound emitted is much less than the amount ofthe compound contained in the material coated. Depending on the type of spray gun, a portion of the solid component deposits on the part. The remainder is lost as overspray. Depending on the level of control, all or a portion of the overspray is emitted to the atmosphere as particulate matter emissions. Before these emissions can be calculated, a number of these parameters must be considered.

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### 4.4.3 Transfer Efficiency Automotive surface coating is generally performed using a spray gun. Transfer efficiency is a measure ofthe effectiveness of spray equipment in applying the solids to the intended surface. The transfer efficiency depends on the type of spray gun, the target configuration and size, the temperature and humidity of the shop air, paint characteristics, paint and air flow rates, and operator experience. Both the South Coast AQMD and U.S. EPA have developed a test protocol for determining transfer efficiency, but currently there is no universally accepted test protocol. The most prevalent types ofauto refinishing spray techniques used in California are air atomized conventional and high volume low pressure (HVLP) spray guns. The ABTF recommends the use of the values listed in Table 1, below, which are from U.S. EPA, Reduction of Volatile Organic Compound Emissions from Automobile Refinishing, EPA-450/3-88-009, October, 1988. If site specific values are available, they can be used instead ofthe values below.
Table 1 

### Transfer Efficiencies for Coating Applications
Application Method Transfer Efficiency Hand (brushes, rollers, etc,) 100% Conventional (air atomized) spray gun 35% High volume, low pressure spray gun (HVLP) 65%


### 4.4.4 Capture Efficiency
For many sources, automotive surface coating is done in a spray booth equipped with filters or a water curtain which captures most of the solids not deposited on the vehicle and adjacent surfaces. Booths are usually equipped with an exhaust fan (for safety) and particulate control. In an enclosed booth or an open booth with an exhaust rate sufficient to comply with fire codes, the capture efficiency is virtually 100%, and all emissions can be assumed to pass through the filters or water curtains.
For partially enclosed spray booths, the capture efficiency might be lower. It 

### is up to the air District to estimate the capture efficiency ofpartially enclosed booths. Ifa prep station or an enclosure other than a spray booth is used, the capture efficiency is less than 100%. The exhaust fan is not sufficient to draw all ofthe solids to the particulate

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### control system. Some of the solids are emitted through the exhaust stack and the remainder are emitted as fugitives. If coating is done outside a spray booth or prep station, emissions are uncontrolled. The capture efficiency is 0. 

### 4.4.5 Fall Out Fraction Another parameter, fall out fraction (FOF), must be considered when estimating particulate emissions and is closely associated to both the transfer efficiency and whether or not a spray booth is used. Recent studies of a coating operation at Rohr Industries, an aerospace manufacturing facility in San Diego, have shown that not all of the solids that do not stick on the surface ofthe substrate being sprayed are drawn into a particulate control system. A portion of the solids fall to the floor; cling to the painter, walls, and ceilings; and are deposited on other surfaces such as racks or masked areas. The FOF is the percent of solids sprayed including the amount transferred to the substrate of interest that does not reach the particulate removal system. For example, the Rohr study determined that the fall out fraction for medium-sized components coated in a precleaned, fully enclosed spray booth by an experienced painter using HVLP spray equipment was 91%. That means for every 100 pounds of solids sprayed, only 9% goes to the filtering system and 91% falls out prior to the filters including the amount that sticks to the intended surface (i.e., the transferred portion). The ABTF recommends that a fall out fraction for auto bodyshops be set at 80% for HVLP and 50% for air atomized spray operations conducted in a fully enclosed booth. The fall out fraction includes the transfer efficiency. The fall out fraction should not be used for spray operations conducted in partially enclosed booths, prep stations, or outside ofa booth. Instead use the transfer efficiency. This equates to 65% for HVLP and 35% for air atomized spray operations. The rationale for this approach is summarized in the memo located in Appendix G. 

### 4.4.6 Booth Control Efficiency Control efficiency refers to the effectiveness of a prep station's or spray booth's particulate emissions control system in removing particulate materials. It 

### can be the filtering efficiency of a filter or mat, or the scrubbing efficiency of a water curtain. Information on the control efficiency of the spray booth or prep station particulate controls can usually be obtained from the manufacturer or supplier of the equipment. If information is not available, the ABTF recommends that the values listed in Table 2 be used. These values are based on informal surveys of filtering efficiency values according to manufacturer's specification used in spray booths located in ABTF member districts. Because this is a scoping evaluation, it is assumed that all particulate

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### emissions have a diameter of less than 10 microns. For a more detailed analysis, the particle distribution should be considered to determine the fraction of the particulate emission that are respirable. This may involve source testing stack emissions to determine particle size distributions. Table 2 Control Efficiencies for Coating Applications

Particulate Control Equipment Control Efficiency Paper Filters 95% Rigid Foam (baffle) Filters 70% Water Curtain 90%


### 4.4.7 Fractional Portion ofToxic Compound
Toxic compounds are expected to dissociate in human cells, and therefore, only the toxic fraction of each particular compound should be considered. For example, the molecular formula for lead chromate is PbCr04 

### and the contributing atomic weights of each element are: lead = 207 chromium = 52 oxygen= 16 x 4 = 

### 64 The total formula weight oflead chromate is 207 

## + 52 

## + (4 x 16) = 323. The fractions ofeach elemental constituent is equal to the contributing atomic weight of that constituent divided by the compound formula weight. Therefore, the toxic fractional weights are as follows: lead = 

### 207/323 = 

### 0.64 chromium 

## = 52/323 

## = 0.16 Toxic constituent amounts in commonly applied pigments are listed below:

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### Table 3 Toxic Metals in Pigments Pigment Toxic Compound Weight Percent(%) Lead chromate hexavalent chromium 16.1 lead 64.1 Calcium chromate hexavalent chromium 33.3 Strontium chromate hexavalent chromium 25.5 Zinc chromate hexavalent chromium 28.7 zinc 36.1 Zinc oxide Zinc 80.3 Lead chromate molybdate 

### * hexavalent chromium 11.3-14.8 lead 61.8-64.4


### Emissions of solids from automotive surface coating must be estimated in a two-step process. Stack emissions may be estimated by the following equation: Equation 2: Ess = 

### VP 

### x D x 

### Xc x T x (1-TE) x (1-CE) x CP or Ess = 

## vp X 

### D X 

### XC X 

### T X 

### (1-FOF) X 

### (1-CE) X 

### CP Where:
E55 = 

### Emissions of solid compound from the stack, lb/yr or lb/hr VP = 

### Volume ofproduct used, gal/yr or gallhr D = 

### Density ofproduct from MSDS, lb/gal 

### Xc = 

### Mass fraction of solid compound in product, %1100 T = 

### Mass fraction oftoxic constituent in solid compound, %/100 TE = 

### Transfer efficiency, %1100 FOF = 

### Fall out fraction efficiency, %1100 CE = 

### Control efficiency ofthe spray booth particulate control CP = 

### Capture efficiency ofthe spray booth particulate control Fugitive emissions may be estimated from Equation 3: Equation 3: Esf = 

## vp X 

### D X 

### XC X 

### T X 

### (1-FOF) X 

### (1-CP) Where:

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### Esf = 

### Emissions ofsolid compound from fugitive releases, lb/hr or lb/yr VP = 

### Volume ofproduct used, gal/yr or gal/hr D = 

### Density ofproduct from MSDS, lb/gal 

### Xc = 

### Mass fraction of solid compound in product, %1100 T = 

### Mass fraction oftoxic constituent in solid compound, %1100 TE = 

### Transfer efficiency, %1100 CP = 

### Capture efficiency ofthe spray booth particulate control Total particulate matter emissions are the sum ofthe stack and fugitive emissions:

An example of this calculation would be to determine the particulate emissions of hexavalent chromium from a spray operation using HVLP in an enclosed spray booth (all stack emissions) equipped with standard paper filters. The fallout fraction is 80%. A hypothetical bodyshop survey indicated that 135 gallons of primer containing hexavalent chromium were sprayed. The product had a density of 8.65 lb/gal, and the lead chromate content was 12%. The weight percent of hexavalent chromium in lead chromate is 16.1%. Particulate emissions are: Ess = 

### 135 gal/yr X 

### 8.65 lb/gal X 

### 12/100 X 

### 16.1/100 X 

### (1-80/100) X 

### (1-95/100) X 

### (1001100)

= 

### 0.23 lb/yr hexavalent chromium emitted Emissions for each solid compound of interest can be calculated in a manner similar to that described above. As in the case of volatile organic compounds, this process is simplified using a spreadsheet. Using equations 1 and 2 above, all of the bodyshop emissions can be estimated using data from the bodyshop survey and the generic formulations, and applying either default or alternate values for fall out fraction, control efficiency, and capture efficiency. In this example, a booth was used and fugitive emissions (Equation 3) were not calculated. Following the procedure outlined here, the toxic emissions inventory for the facility can now be generated. 

### 4.4.8 Transmitting Inventory Data to CARB
The final step in this phase of the process is to transmit the emissions inventory data, either generic or refined, to the CARB for inclusion in the statewide data base. CARB has recommended that the format specified in Appendix H 

### be used to transmit data electronically (on diskette).

September 1996 15 

# I

## 5.0 Facility Prioritization
The Air Toxics "Hot Spots" Act requires districts to prioritize facilities for possible adverse health risks and to require high priority facilities to perform health risk assessments. The method used to prioritize facilities is at the discretion of each District. The task force recommends that auto bodyshops included in an industrywide assessment be prioritized in a manner similar to that used by the District for other facilities. Thus, the "scoping" level health risk assessment would be performed only for high priority facilities.
To assist districts in developing pnontlzation procedures, the CAPCOA Toxics Committee developed the Facility Prioritization Guidelines, July, 1990. One of the procedures described in those guidelines is discussed in this document, but it is acknowledged that other procedures may be equally valid. Based on the emissions determined from examination of the facility questionnaires and the generic coating profiles, the toxicity of the emitted compounds, and the proximity of the facility to receptors, priority scores can be calculated. Detailed equations for calculation ofthe priority score are in Appendix I. 

### The task force recommends that no health risk assessment be performed for facilities that are not designated high priority using this health-protective procedure, since these facilities are unlikely to pose significant risks. 

## 6.0 "Scoping" Health Risk Assessment
For facilities that are prioritized as high priority, a "scoping" or screening health risk assessment is performed to determine ifemissions from the facility have the potential to cause a significant health risk. A risk assessment for toxic air pollutants combines results of studies on the potential adverse health effects of various animal and human exposures to the pollutants with results of studies that estimate the level of exposure at different distances from the source of the pollutants. The health risk assessment consists of four steps: hazard identification, dose-response assessment, exposure assessment, and risk characterization. 

### 6.1 Hazard Identification
For air toxics sources, hazard identification involves determining the potential health effects that may be associated with emitted pollutants. The purpose is to identify whether a pollutant is a potential human carcinogen or is associated with other types of adverse health effects. For the auto body industrywide health risk assessment, the pollutants evaluated are a subset of the list of substances for which emissions are to be

September 1996 16 

# I

### quantified according to the ARB Emission Inventory Criteria and Guidelines Regulations, January 31, 1994. See Appendix C for the list ofcompounds addressed in this industrywide assessment. Appendix C also includes toxicity data from the CAPCOA Air Toxics "Hot Spots" Program Risk Assessment Guidelines, October 1993 for the compounds addressed. 

### 6.2 Dose-Response Assessment Dose-response assessment is the process of characterizing the relationship between the exposure to an agent and the incidence of an adverse health effect in the exposed population. In a quantitative carcinogen risk assessment, the dose-response relationship is expressed in terms of a potency slope or inhalation unit risk which is used to calculate the probability or risk of cancer associated with a given exposure level. The Cal-EPA Office of Environmental Health Hazard Assessment (OEHHA) has compiled cancer potency values that were used in this industrywide assessment. The values are from Tables III-5 and III-6 of the CAPCOA Air Toxics "Hot Spots" Program Risk Assessment Guidelines, October 1993.
For noncarcinogenic effects, dose-response data developed from animal or human studies are used to develop noncancer reference exposure levels (acute and chronic RELs). These levels are compared to exposures resulting from bodyshop emissions under different release scenarios. The RELs used in this assessment are from Tables lll-8 (chronic RELs) and Ill-10 (acute RELs) of the October 1993 CAPCOA Air Toxics "Hot Spots" Program Risk Assessment Guidelines.
Auto bodyshops can emit toxic metals such as lead, hexavalent chromium, cadmium, and nickel which are known to cause cancer in people. Several solvents can be emitted which cause irritation of the respiratory tract and depression of the nervous system. Glycol ethers, lead, and toluene affect developing embryos. In addition to effects by inhalation, some compounds can be absorbed through the skin or ingested from crops grown near the facility. The dose-response data used in this industrywide assessment are listed in Appendix C. The dose-response data will be updated periodically by OEHHA. Industrywide health risk assessments may need to be updated as well based on new data. 

### 6.3 Exposure Assessment
The purpose of the exposure assessment is to estimate the extent of public exposure to each substance for which cancer risk will be quantified or noncancer effects evaluated. This involves emission quantification (discussed above), modeling of environmental transport (discussed below), evaluation of environmental fate, and estimation of shortterm and long-term exposure levels. A multipathway exposure model that includes inhalation, ingestion, and dermal routes ofexposure was used for this assessment. The

September 1996 17 

# I

### noninhalation exposure analysis is included in order to account for exposure to deposited air emissions through pathways such as ingestion of contaminated soils, ingestion ofcontaminated crops, or dermal absorption. Cadmium, lead, and hexavalent chromium can enter the body through non-inhalation routes. Due to their highly site specific nature, other pathways such as water ingestion and ingestion of local meat and dairy products were not included in this scoping assessment. These pathways may be significant at some locations and may need to be added on a site specific basis. 

### 6.4 Risk Characterization
The final step of risk assessment, risk characterization, is an integration of the health effects and public exposure information developed for emitted pollutants. Maximum individual risks are calculated for receptors at varying distances from the emission source. Risks are calculated for various facility types and product lines. The calculated risk for all pollutants emitted from a single facility are combined and compared to acceptable criteria.
For this type of assessment, either the HRA or the ACE2588 Risk Assessment Model are typically used. These models use emissions estimates and air dispersion modeling results to calculate multipathway exposures and risks as described in the CAPCOA Air Toxics "Hot Spots" Program Risk Assessment Guidelines, October 1993. 

### 6.5 "Scoping" Level Release Scenarios and Dispersion Modeling
Most automotive surface coating occurs in spray booths. The spray booths are typically equipped with exhaust fans and stacks. Spray booths are modeled as point sources. Typical release parameters for this study were based on District staff field observations of a number of facilities. The height of the stacks vary, but the releases are generally between 25 and 30 feet above ground level. Stack diameters generally range from 1.5 to 3 feet. Spray booth exhaust fans are typically rated at 7,500

- 15,000 cfm. Exhaust is near ambient temperature. Downwash may occur due to the presence of buildings. Based on field observations, four "generic" sets of building dimensions were developed. These generic building dimensions are believed to describe the majority ofbuildings where automotive surface coating occurs. Four building sizes were assessed. All building configurations were estimated at 20 feet tall, with varying sizes of20 by 20 feet, 20 by 75 feet, 75 by 100 feet, and 100 by 150 feet. (It 

### was later noted through the modeling analysis that the calculated concentrations did not differ for each of these building sizes; therefore, a single set of modeling results are discussed below).
In some cases, spray booth stacks end in a horizontal direction rather than vertical. Other stacks are equipped with a rain cap or other device which obstructs the vertical

September 1996 18 

# I

### flow of the exhausted emissions. For these situations, a stack velocity of zero was used, to simulate that no vertical dispersion occurs due to stack gas momentum. Some coating operations may be performed in an open area, without a spray booth. This type ofoperation was modeled as a volume source. The dimensions ofthe volume source were assumed to be 5 ft x 10 ft x 5 ft high, corresponding to the approximate area occupied by a car being painted.
Based on the above, and preliminary modeling results, seven release scenarios were modeled. Six of these were stack-type releases, four with vertical velocity and two with obstructions to vertical flow. The seventh scenario was an unconfined, outdoor release simulated as a volume source. The scenarios are described in Table 4. Concentrations of air toxics emitted from auto bodyshops at receptors were predicted using air quality dispersion models. Air quality modeling uses computer based algorithms to estimate how a pollutant emitted from a source will affect the surrounding air quality. The computer programs, called air quality dispersion models, simulate the movement and dispersion ofpollutants after they are released into the air. The results of the model depend on very specific inputs such as meteorological conditions (e.g., temperature and wind speed), the physical characteristics of the pollution source (e.g., height of a stack), and the surrounding topography or terrain. The model predicts the concentration ofa pollutant at any given distance from the original sources. Several air dispersion models have been developed and approved by the USEPA. Two of these were used in this analysis: ISCST2 and SCREEN2. Later versions of each of these models (ISCST3 and SCREEN3) have since been approved for use by the U.S. Environmental Protection Agency and should be used in any future analyses. However, it is not expected that the use of these later models would significantly impact the results of these analyses. Both ISCST2 and SCREEN2 are Gaussian dispersion models suitable for use in screening-level applications. For the scoping assessment, each ofthe models was used in a flat-terrain mode. Each of the generic release scenarios was modeled using both SCREEN2 and ISCST2. SCREEN2 used default meteorological data to calculate maximum hourly concentrations. It 

### is suitable for use in any locale (although as stated, in this assessment, it was run in the flat terrain mode) and designed not to underpredict air quality impacts. In order to estimate concentrations for averaging times longer than one hour, averaging time adjustment factors are often employed. Following guidance of U.S. Environmental Protection Agency and California Air Resources Board (Ranzieri, 1994), an exposure adjustment factor of 0.08 was employed to predicted annual average concentrations from the one-hour maxima. Monthly estimates are also valuable for comparison to monthly air quality standards for lead. An exposure adjustment factor of0.3 was used to estimate monthly concentrations (Ranzieri, 1994).

September 1996 19 

# I(I) (11 "0**~** 

### 3 0"**~**



# - \0 \0 0'1

### ~**~** 

# . .

Table 4. Description ofGeneric Modeling Source Categories

Source Stack**Hel~ht** 

### ExitVelocity Exit Diameter Description (feet) (meters) (fps) (mps) (feet) (meters) 25-ftstack. 30 fps

### velocity 25 7.6 30 9.1 2.5 0.76 30-ftstack. 30fps velocity 30 9.1 30 9."1 2.5 0.76 25-ftstack. 75fpsvelocity 25 7.6

. 75 22.9 2.0 0.61 30-ftstack. 75fpsvelocity · 30 9.1

. 75 22.9 2.0

. 0.61 25-ftstackwith obstruction

## tovertical

# now 25 7.6 O{Downwatd 0(Downward 2.0 0.6 30-ftstackwith obstruction

## tovertical

# now .30

. . 9.1. O(Oownward 

# o(Downward' 2.0 0.6 Source Volume Height Initial SigmaY Initial SigmaZ Description (feet). (meters) (feet) (meters) (feet) (meters) Fugitive release outslde.ofabuilding
. 2.5 0.76. 4.7 1.4

. 2.3 0.71 SigmaY Isthe Initial horizontaldimension. SigmaZIsthe Initialvertical dlnienslon. · ExitTemperature '·F K 

### 70 294 70 294 70 294 70 294 70 294 70 294 I 

### ExitTemperature F K . 

## NA NA



# -

### The ISCST2 model differs from SCREEN2 in that it is more data intensive and is designed to treat more complex release situations. ISCST2 requires site-specific hourly meteorological data and can calculate concentrations for multiple averaging times, including maximum one hour, monthly, and annual average values. Given the use of site-specific meteorology and more detailed dispersion algorithms, simulations using ISCST2 are more refined than those of SCREEN2, and should provide a better sitespecific estimate ofground-level concentrations. (Estimates using ISCST2 are typically less conservative, i.e., lower than those ofSCREEN2.) This dispersion modeling assessment was limited in scope. Both the SCREEN2 and ISCST2 models contain a number of model options. In addition, as discussed above, the ISCST2 model requires site-specific meteorological data. For this assessment, the effort was limited in scope to two actual meteorological sites in San Diego County, an inland and coastal site. The ISCST2 model was run in the "rural" mode, which affects the results of the dispersion algorithms and often predicts slightly greater ground-level concentration estimates. SCREEN2 analyses were run in both "rural" and "urban" modes. The models used regulatory agency-recommended model default options and switches. Results were calculated for various distances extending from 10 meters to 1000 meters from the source. Near to the source, receptor points were arranged at 25 meter radial distances from the source to a distance of 200 meters. Receptor grid spacing of 50 meters was used to a distance of500 meters, and finally receptor radials were placed at 600, 750 and 1000 meters. The stack releases were modeled in such a way as to include the assessment of building downwash which tends to increase ground-level concentrations near to the stack. As discussed above, four building configurations were evaluated; however, predicted concentrations did not differ among the four building configurations. Therefore, a single set ofmodeling results are discussed below. Each ofthese models was run with a unit emission rate ofone gram per second (g/s) to calculate a relative concentration (often referred to as X/Q, or relative dispersion factor). X/Q values in 11g/m3 per g/s have also been converted to units of 11glm3 

### per lb/hr and 11g/m3 per lb/yr. These X/Q values can then be multiplied by a calculated emission rate of a particular toxic constituent, in corresponding units to estimate the ambient concentration of that toxicant. A comparison of the X/Q values can also be used to provide a comparative estimate of the dispersive potential of each release scenario, i.e., a comparison of the effectiveness of each source type in dispersing air pollutants. Similarly, because risk is directly proportional to X/Q, a comparison of X/Q values from each release type provides an indicator of the relative risk related to each release scenario.

September 1996 21 

# I

## •

6.5.1 Dispersion Modeling Results The results of the dispersion modeling analyses are summarized herein with detailed results provided in Appendix J. 

### Table 5 provides the maximum calculated X/Q for each evaluated release scenario, meteorological regime and averaging period. X/Q values are provided in units of !Jg/m3 

### per g/s, per lb/hr, and per lb/yr. Lower X/Q values relate to better dispersion and, correspondingly, lower toxicant concentrations and reduced risk. In all cases, stack releases with no obstruction to vertical flow result in lowest X/Q values, and therefore, greatest dispersive potential. The best performing scenario to the worst performing scenario can be ranked as follows:
I. Taller Stack (30 feet), Highest Exit Velocity (75 feet per second) 2. Lower Stack (25 feet), Highest Exit Velocity (75 feet per second) 3. Taller Stack (30 feet), Lower Exit Velocity (30 feet per second) 4. Lower Stack (25 feet), Lower Exit Velocity (30 feet per second) 5. Taller Stack (30 feet), No Vertical Flow 6. Lower Stack (25 feet), No Vertical Flow 7. Fugitive Source Model input files for the scenarios included in this guideline are available on diskette from local districts. These input files can be run with local meteorological data as a refinement to the screening risk assessment. Dispersion factors calculated for point sources with no vertical flow are about an order of magnitude higher than those without obstruction, and fugitive releases are several orders of magnitude higher. Maximum hourly X/Q values vary significantly among the release scenarios; however, they do not differ significantly between meteorological data. For point sources, values range from about 150 for the taller stack and higher flow rate to almost 1000 for the lower stack and lesser flow rate. Without vertical flow, the hourly X/Q values (!lglin3

### /g/s) range from 5,000 to 12,000 for the 25 and 30 foot stacks, respectively, up to 158,000 for the fugitive release. Additional variation in X/Q with meteorological data is seen with increasing averaging time. For the annual assessment, the generic meteorology can result in two to three times the X/Q values derived from real meteorology. The X/Q value range is 8 to approximately 80 for point sources with vertical flow, 100 to 1000 for stacks with vertical flow obstruction, and up to 13,000 for fugitive sources.

September 1996 

### 22 

# I

### en (» "'0**~** 

### 3 0" (» ....,

....... \0 \0 0'1

N t..) Source Description
25-ft stack, 30 fps velocity 30-ft stack, 30 fps velocity 25-ftstack, 75 fps velocity 30-ft stack 75fps velocity 25-ft stackwith obstruction to vertical fiOY 30-ft stackwith obstruction to verticalflO\\

_ Fllgitive release outside ofa building

Source Description
25-ftstack, 30 fps velocity 

### Table 5. Maximum Calculated Dispersion Factors forVarious SourqeTypes and Meteorological Data

MaxAnnual X/Q
- ug/m3 perg/s Max HourlyX/Q- ug/m3J>er_g/s San Otego SCREEN2 San Dfeqo SCREEN2 Coastal Inland Rural Urban Coastal Inland Rural Urban

51 36 69 77 758 797 868 964 28 26 26 55 414 312 326 682 15 11 22 36 278 279 274 456 11 8 12 26 148 151 153 328 235 455 1015 423 11635 12552 12690 5283 96 104 450 205 4659 5065 5627 2562 7667 13101 12616 9264 134352 134977 157700 115800

MaxAnnual X/Q
- ug/m3 per lblvr Max HourlyX/Q
- ug/m3 per lblhr

San Otego SCREEN2 San Diego SCREEN2 Coastal Inland Rural Urban Coastal Inland Rural Urban 7.4E-04 5.2E-04 1.0E-03 1.1E-03 96 101 110 122 30-ft stack, 30 fps velocity
. 4.0E-:04 3.8E-04 3.8E-04 7.8E-04 52 39 41 86 25-ftstack, 75 fps velocity 2.1E-04 1.5E-04 3.2E-04 5.2E-04 35 35 ' 35 58 30-ftstack 75 fps velocity 1.5E-04 1.2E-04 1.8E-04 3.8E-04 19 19 19 41 25-ftstackwith obstructionto verticalfiO\I 3.4E-03 6.5E-03 1.5E-02 6.1E-03 1470 1585 1603 667 30-ftstackwith obstruction to verticalflov. 1.4E-03 1.5E-03 6.5E-03 2.9E-03 588 640 711 324 Fugitive release outside ofa building 1.1E-01 1.9E-01 1.8E-01 1.3E-01 16969 17048 19918 14626 Max MonthlyX/Q
- ug/m3 perg/s San Otego SCREEN2 Coastal Inland Rural Urban 88 59 260 289 41 43 98 205 24 18 82 137 18 14 46 99 364 1014 3807 1585 149 395 1688 769 11614 27658 47310 34740

Max MonthlyX/Q
- ug/m3 per lb/mo San Otego SCREEN2 Coastal Inland Rural Urban

0.015 0.010 0.046 0.051 0.008 0.008 0.017 0.036 0.004 0.003 0.014 0.024 0.003 0.002 0.008 0.017 0.064 0.178 0.667 0.278 0.026 0.069 0.296 0.135 I 2.034 4.844 8.287 6.085 

## I

Note: Values of0.08 and 0.3were used to extrapolate the SCREEN2 maximum hourlyvalue to an annual and monthlyvalue, respectively.



# -

### Dispersion factors also vary significantly with distance from the source. Maxima occur within 75 meters for the stacks without vertical flow, and within 10 meters for fugitive sources. For those sources with exit velocities of 30 feet per second, maxima occur generally within 125 meters, but may occur as far as 250 meters from the source. For those with higher exit velocities (75 feet per second as opposed to 30 feet per second), maxima occurring generally 50 meters further from the source. The SCREEN2 model generally gave representative results in comparison to ISCST2 with site-specific meteorological data, and based on this limited assessment, SCREEN2 looks like it will serve as an adequate screening tool for most applications. SCREEN2 was slightly more conservative (which would result in the calculation of higher risk values) for all but a few cases related to hourly dispersion, and in those cases where the ISCST2-calculated values exceeded those ofSCREEN2, the difference was minor. The difference between ISCST2 results and those ofSCREEN2 when extrapolated from hourly to annual estimates was most notable with the fugitive emissions scenario. Here, the estimates varied by a factor of three. Otherwise, annual projections for SCREEN2 results were within 20 percent ofthe ISCST2 calculations.
6.5.2 Comparative Dispersion Modeling and Implications for Risk Reduction Reduction of emissions of toxic compounds is the preferred method for reducing risks. Coating distributors can be contacted regarding the existence and suitability ofproducts that have less or none of the toxic compound(s) of concern. In addition to emission reduction, risks can be reduced by changing dispersion characteristics. Comparative dispersion modeling results provide a basis for risk management decisions related to source dispersion characteristics and siting. Methods of managing risks which were evaluated include: enclosing fugitive emissions increasing the distance from the stack to the fenceline, removing obstruction to vertical flow (raincap), increasing the stack height, increasing stack exit velocity, Summary findings are discussed below. Decreasing risk by enclosing fugitive emissions Facilities that perform painting outside a paint spray booth were found to have the greatest overall impact. Use of a spray booth equipped with filters or other particulate controls significantly reduces particulate emissions. Additionally, emissions from a

September 1996 

### 24 

# I

### stack are dispersed more efficiently than ground level fugitive emissions. To reduce toxic impacts, spray operations should be conducted within an enclosed spray booth. Decreasing risk from fugitive emissions by increasing distance to the fenceline Some larger facilities can consider relocating sources away from fenceline locations and nearby receptors, and thereby reducing the risk to offsite receptors. Increasing the distance to the fenceline or the nearest receptor by a factor of five (for example from 10 meters to 50 meters) resulted in a risk decrease ofa factor of 3 to 9 for the ISCST2 run using coastal meteorology, 3 to 6 for the ISCST2 run using inland meteorology, and 3 to 7 using SCREEN2, for rural and urban areas, respectively. Decreasing risk by removing obstruction to vertical flow Emissions directed upward instead of downward produces the largest risk reduction in this study. On an hourly basis, risk reduction ofat least a factor of 12 can be achieved in rural settings and 5 in urban settings, by directing flow upward with even the minimum velocity (30 feet per second). Similarly, an annual decrease of a factor of4 can be achieved. Decreasing risk by increasing stack height A 20 percent increase in stack height (e.g., increasing release height from 25 to 30 feet) can reduce risk by a factor of one and one-third to three. Local codes should be consulted before recommending an increase in stack height. Additionally, stack heights should not exceed EPA's GEP (Good Engineering Practice) heights. For auto bodyshops, this generally is 2.5 times the building height. Decreasing risk by increasing stack exit velocity Increasing stack exit velocity by a factor of2.5 (e.g., increasing velocity from 30 to 75 feet per second) produced proportional risk decreases, lower by a factor of two to three. Note that an exit velocity ofat least 50 feet per second is often recommended to avoid stack tip downwash. However, stack velocity should not be recommended for change without first consulting a HV

### AC professional or the spray booth manufacturer for approval ofthe increase in stack exit velocity. Summary results The greatest potential for reducing risk by enhancing dispersion lies in ensuring that emissions are directed in a vertical direction with some upward momentum. Impact reductions of factors 12 to 15 were found. All other techniques, including fenceline distance increases, stack height increases, and exit velocity increases provided risk reductions ofbetween factors oftwo to three.
In addition to the above, the CARB has developed risk reduction guidelines for auto bodyshops under SB 1731. These guidelines should be consulted for more information on reducing emissions and risk from auto bodyshops. A copy of the risk reduction

September 1996 25

### guidelines can be obtained from the California Air Resources Board, Stationary Source Division, Emission Assessment Branch (916/323-4327). 

### 6.6 "Scoping" Level Risk Assessment Methodology
For scoping level risk assessments, it is appropriate to use the SCREEN2 model to estimate concentrations of toxic compounds at off-site receptors. The model was run using the emission scenarios described above, and an emission rate of 1 lb/yr. The SCREEN2 model provides concentrations at each receptor distance that is included in the modeling run. In addition, the location with the highest impact (X/Q) will be found by the SCREEN2 model. X/Q values at various distances for the seven emission scenarios examined are included in Appendix 

### J.
Some toxic compounds emitted from auto bodyshops; specifically cadmium, hexavalent chromium, and lead; can enter the body through routes other than inhalation (i.e., absorbed through the skin, ingested, etc.). These compounds are known as multipathway pollutants. Risk assessments generally include a multipathway analysis to account for these other routes ofexposure. Multipathway values in Appendix C may be used for scoping assessments unless otherwise directed by the District. The cancer factors were developed by comparing multipathway risk results to the results of risks due only to inhalation. The cancer multipathway factor is the ratio of the multipathway risk to the inhalation risk. These factors differ due to choices in assumptions, such as fraction of home grown produce and pollutant deposition rate. For cancer risk screening, the factors should be applied to each multipathway pollutant emitted from the auto bodyshop being modeled. 

### 6.6.1 Cancer Risk Calculation
The equation for calculating the maximum cancer risk is: Equation 4: R 

## = X/Q X 

### Q· X 

### MPA X 

### UR I I I 

### where,
Ri = 

### Risk from each compound (per million) X/Q = 

### Peak concentration from SCREEN2 modeling based on 1 

### lb/yr emission rate (!lgfm3)f(lb/yr) Qi = 

### Actual emission rate ofeach compound (lb/yr) MPA = 

### Multipathway adjustment factor (ifapplicable) URi = 

### Unit risk factor for each pollutant (!lgfm3)-1
Ri is summed for each pollutant to determine the total cancer risk.

September 1996 26 

# I

### 6.6.2 Chronic Noncancer Risk Calculation Screening-level chronic and acute hazard indices should also be calculated. Multipathway factors have also been developed by SCAQMD and SDCAPCD for chronic noncancer health effects. These factors are the ratio of the exposure from ingestion to the exposure through inhalation. The chronic hazard index can be calculated using the peak annual X/Q , the chronic adjustment factor and the chronic noncancer Reference Exposure Levels (REL). For the chronic hazard index calculation, the adjustment factors should be applied to all appropriate compounds. The equation for calculating the screening chronic hazard index is: Equation 5: Hlci = 

### (X/Q x Qi x CF)/(RELi) where, Hlci = 

### Individual chronic hazard index for each compound X/Q = 

### Peak concentration from SCREEN2 modeling based on 1

### lb/yremission rate (!lgfm3)/(lb/yr) Qi = 

### Actual emission rate ofeach compound (lb/yr) CF = 

### Chronic noncancer multipathway adjustment factor (ifapplicable) RELi 

### = Chronic Reference Exposure Levels for each pollutant (!lgfm3)
Note that a multipathway factor of 1.00 should be used for all compounds when calculating the noncancer chronic hazard index for the respiratory endpoint.
The individual chronic hazard indices should be found for the appropriate toxicological endpoint to determine the total chronic hazard index. The individual hazard indices are summed for each endpoint to determine the maximum total chronic noncancer risk. However, as a first cut, if the sum of all HI's does not exceed 1, no further evaluation is necessary. 

### 6.6.3 Acute Noncancer Risk Calculation
The total acute hazard index is calculated much the same as was the chronic. The total acute hazard index, however, is based on peak hourly emissions (lb/hr). As for the total chronic hazard index, the individual hazard index for each substance affecting the same toxicological endpoint is summed to determine the maximum total acute noncancer risk. The equation for calculating the total acute hazard index is:

September 1996 

### 27 

# I

### Equation 6: Hlai = 

### (X/Q 

### * Qi)/(RELi) where,
Hici = 

### Individual chronic hazard index for each compound X/Q = 

### Peak hourly concentration from SCREEN2 modeling based on 

### 1 lb/hr emission rate (J.lg/m3)f(lb/hr) Qi = 

### Peak hourly emission rate ofeach compound (lb/hr) RELi = 

### Acute Reference Exposure Levels for each pollutant (J.lg/m3) Lead should be evaluated as a subchronic 30-day exposure. Districts may contact OEHHA for further information.
Calculations may be facilitated by use of tables, either hardcopy or in a spreadsheet, similar to Tables 

### 6 through 

### 8. An example of use of this type of table is included in Appendix L, Tables L-6 through L-8.
Within many districts, facilities with a total cancer risk of 10-5 or greater, or an acute or chronic hazard index (HI) greater than 1.0 at a residential (MEIR) or worker (MEIW) receptor are considered to pose a significant risk to those exposed. If the results of the scoping risk assessment yield a total cancer risk of 10-5 or greater or an acute or chronic hazard index (HI) greater than 1.0 at a residential (MEIR) or worker (MEIW) receptor values (or other significant levels as identified by the District), then a refined risk assessment should to be conducted for the facility under consideration. Since it was envisioned that districts would perform industrywide risk assessments, districts may need to conduct refined risk assessments for high risk facilities. 

### 6.7 Sample Applications
An example screening risk assessment has been prepared using the results from the dispersion modeling described above and preliminary estimates of toxic emission rates as surveyed for 39 auto bodyshops in an ABTF member District. This screening health risk assessment uses a generic approach. 

### It combines the maximum dispersion factors as calculated with SCREEN2 using the "rural" mode for three release scenarios:


### 1. The stack release scenario for the 25-foot stack and the 30 foot per second exit velocity. This resulted in the greatest impact (i.e., least dispersion) for the stack cases without obstruction to vertical flow.
2. The stack release scenario for the 25-foot stack designed with a raincap. This resulted in the greatest impact for the stack cases with obstruction to vertical flow.

September 1996 

### 28 

# I

## Table 6. Carcinogenic Risk Worksheet

DIRECTIONS: 1. Selectsource description scenario number{from Table below) which bestfits facility exit characteristics: 2. Select {circle) either Rural or Urban modeto fit locality: RURAL or URBAN 3. SelectX/Q values (below) for source description and mode. Source Description MaxXJQ in lb/yr Stack Exit Rural Urban No. Height Vel. {feet) (fps) I 25 30 1.0E-03 1.1E-03 "'I L 30 30 3.8E-04 7.9E-04 3 25 75 3.2E-04 5.2E-04 4 30 75 1.8E-04 3.8E-04 5 25 Raincap 1.5E-02 6.1E-03 6 30 Raincap 6.5E-03 3.0E-03 7 FugitivE' Fugitive 1.8E-01 1.3E-01 4. TransferappropriateXJQ values and emission rates into table below. 5. Identify source as controlled or uncontrolled: CONTROLLED or UNCONTROLLED 6. Multiply emission rate, XJQ, unit risk factorand multipathway factor (either controlled or uncontrolled) for each toxicant. Ustproductas Individual Excess Cancer Risk. · 7. Sum Individual Excess Cancer Risk for each toxicant and record in summation box. 8. Compare sum to District's acceptable criteria. Ifthis is exceeded, a refined risk assessment should be considered.

TOXICITY DATA FOR CANCER EVALUATIONS CHEMICAL EMISSION XJQ PRELIM. CHEMICAL NAME ABSTRACT RATE {ug/m3 UNIT RISK POTENCY MULTIPATHWAY NUMBER {lb/yr) per FACTOR VALUE {1) FACTOR (2) lbtvr) (m113/ug) (m113/ug) CONTR CADMIUM AND COMPOUNDS 7440-43-9 4.2E-03 NA 1.00 CHROMIUM (HEXAVALENn 18540-29-9 1.4E-01 NA 1.01 LEAD AND COMPOUNDS 7439-92-1 1.2E-05 NA 1.00 METHYLENE CHLORIDE 75-09-2 1.0E-06 NA 1.00 NICKELAND NICKEL COMPOUNDS 7440-02-0 2.6E-04 NA 1.00 SUMMATION FOR ALLTOXICANTS NOTES: 1. Preliminary potencyvalues should be used atthe discretion ofthe District. 2. Multipathway factors are the ratio ofthetotal risk to inhalation risk. These have been developed using HRA92, version 1.1, a multipathway exposure model developedjointly bythe CaliforniaAir Resources Board andthe Office ofEnvironmental Health Hazard Assessment Assumptions and parameters usedto develop the the multipathway factors include: Emission rate = 1 g/s XJQ =1 Deposition velocity = 0.02 m/s forcontrolled sources and 0.05 m/s for

uncontrolled sources 70-yearexposure Fraction ofhomegrown fruits and vegetables consumed= 10% UNCONTR 1.00 1.03 1.00 1.00 1.00

Pathways/sources include inhalation, ingestion ofsoil (pica), homegrown vegetables,

mother's milk {forone year) and skin contact. References: CAPCOA 1993and OEHHA, AirToxics Hot Spots Program Risk Assessment Guidelines Part 1:

Evaluation ofAcute Non-Cancer Health Effects, Draftfor Public Comment, December 1994.

September 1996 29 

# I

INDIV EXCESS CANCER

RISKDIREcnONS: 

## Table 7. Non-Cancer Chronic Health Hazard Index Worksheet

1. Selectsourcedescription scenario number(from Table below) which bestfits facility exitcharacteristics: 2. Select (circle) either Rural or Urban modeto fit locality: RURAL or URBAN 3. SelectXJQ values (below) forsourcedescription and mode.
--- Source Description MaxXIQ in lb/vr Stack Exit Rural Urban No. Height Vel. (feet) (fps) 1 25 30 1.0E-03 1.1E-03 2 30 30 3.8E-04 7.9E-04 3 25 75 3.2E-04 5.2E-04 -4 30 75 1.8E-04 3.8E-04 5 25 Raincao 1.5E-02 6.1E-03 6 30 Raincap 6.5E-03 3.0E-03 7 Fugitive Fugitive 1.8E-01 1.3E-01 -4. TransferappropriateXlQ values and emission rates into table below. 5. Identify source as controlled oruncontrolled: CONTROLLED or UNCONTROLLED 6. Foreachtoxicant, multiply emission rate, XJQ, and multipathwayfactor (eithercontrolled oruncontrolled). Dividethatproductby the REL foreachtoxicant Us! productas Chronic Health Hazard Index. 7. Sum Hazard Indexforeach toxicantand record in summation box. 8. Comparesumto District's acceptablecriteria. Ifsummation exceeds 1, sum individually

for eachtoxicendpointand record maximum endpointand endpoint-specific HHI. Ifvalueexceeds 1, a refined risk assessment should beconsidered.
TOXICITY DATA FOR NON-CANCER CHRONIC EVALUATIONS CHEMICAL EMISSION XIQ SYSTEM OR ORGAN EFFECTED CHEMICAL NAME ABSTRACT RATE (ug/m3 MULTIPATHWAY CV/ CNS/ IMMU KIDN Gil REPR NUMBER (lblyr) 

# .:0 REL FACTOR(1) BL PNS LV I(ug/m"3l CONTR UNCONTR CADMIUMAND COMPOUNDS 7440-43-9 3.5E+OO 16.86 38.93 X CHROMIUM !HEXAVALENn 18540-29-9 2.0E-03 1.00 1.00 X X COPPERAND COMPOUNDS 7440-50-8 2.4E+OO 1.00 1.00 ETHYLENE GLYCOL (MONO)- 111-76-2 2.0E+01 1.00 1.00 X

BUTYL ETHER ETHYL BENZENE 100-41-4 1.0E+03 1.00 1.00 X LEADAND COMPOUNDS 7439-92-1 1.5E+OO 1.00 1.00 X X X X X METHYL ETHYL KETONE 78-93-3 1.0E+03 1.00 1.00 X METHANOL 67-56-1 6.2E+02 1.00 1.00 X METHYLENE CHLORIDE 75-09-2 3.0E+03 1.00 1.00 X X NICKELAND NICKELCOMPOUNDS 7440-02-0 2.4E-01 1.00 1.00 X X PROPYLENE GLYCOL (MONO) 107-98-2 2.0E+03 1.00 1.00 X METHYL ETHER STYRENE 100-42-5 7.0E+02 1.00 1.00 X !TOLUENE 108-88-3 2.0E+02 1.00 1.00 X X P<YLENES (M.O P ISOMERS) 1210 3.0E+02 1.00 1.00 X IZINCAND COMPOUNDS 7440-66-6 3.5E+01 1.00 1.00 X RESP

X (2)

X X X

X

X X SUMMATION FORALLTOXICANTS
NOTES: 1. Multipathwayfactors arethe ratio ofthe total risk to inhalation risk. Thesehave been

developed using HRA92, version 1.1, a multipa!hwayexposure model developedjointly bythe California Air Resources Board andthe Office of Environmental Health Hazard Assessment Assumptionsand parameters usedto develop the the multipathway factors include: Emission rate = 1 gts XIQ

### = 1 Deposition velocity= 0.02 mlsfor controlled sources and 0.05 m/sfor

uncontrolled sources 70-yearexposure Fraction ofhomegrownfruits and vegetables consumed = 1O"'o Pathways/sources indude inhalation, ingestionofsoil (pica), homegrown vegetables,

mother's milk (foroneyear) and skin contact. 2. A multipathwayfactorof 1.00 should be usedtocalculate the non-cancerchronic hazard Indexforthe respiratory endpoint. References: CAPCOA 1993and OEHHA, AirToxics Hot Spots Program RiskAssessment Guidelines Part 1:

Evaluation ofAcute Non-Cancer Health Effects, Draftfor Public Comment, December 1994.

September 1996 30 PRIMARYTOXIC ENDPOINT 

# I

CHRONIC HEALTH HAZARD INDEX

# Table 8. Non-CancerAcute Health Hazard IndexWorksheet

DIRECTIONS: 1. Selectsource description scenario number(from Table below) which bestfits facility exit characteristics: 2. Select (circle) either Rural or Urban mode tofit locality: RURAL or URBAN 3. Select XIQ values (below) for source description and mode

.. Source Descriotion MaxXJQ In lblhr MaxX/Q In lb/mo Stack Exit Rural Urban Rural Urban No. Height Vel. (feet) (fps) 1 25 30 110 122 0.046 0.051 2 30 30 41 86 0.017 0.036 3 25 75 35 58 0.014 0.024 4 30 75 19 41 0.008 0.017 5 25 Raincao 1603 667 0.667 0.278 6 30 Raincao 711 324 0.296 0.135 7 Fugitive Fugitive 19918 14626 8.287 6.085 4. Transfer appropriate X/Q values and emission rates intotable below. Use the monthly XIQ value and maximum monthly emission rate (lb/mo)forlead only. 5. Identify source as controlled or uncontrolled: CONTROLLED or 6. Foreach toxicant. multiply emission rate, and X/Q. Divide that product bythe RELforeach toxicant. UstproductasAcute Health Hazard Index. 7. Sum Hazard Indexforeach toxicant and record In summation box. 8. Compare sum to District's acceptable criteria. Ifsummation exceeds 1. sum individually for each toxicendpoint and record maximum endpointand endpoint-specific HHI. Ifvalue exceeds 1, a refined risk assessmentshould be considered. UNCONTROLLED

EMISSION TOXICITY DATA FORACUTE EVALUATIONS CHEMICAL RATE XJQ TOXIC ENDPOINT ORTARGETORGAN CHEMICAL NAME ABSTRACT (lblhr) (uglm3 ACUTE CNS/ IMMUN REPRO/ NUMBER (lblmo per REL PNS DEVL for lead) lblhr) j1Jg/m"3) COPPERANDCOMPOUNDS 7440-50-8 1.0E+01 £1.0E+21 ETHYLENE GLYCOL 111-76-2 1.5E+03 X

(MONO)BUTYL ETHER [5.5E+3] (BUTYL CELLOSOL VE, 2-BUTOXYETHANOL} ISOPROPANOL 67-63-0 [4.9E+4} LEADAND COMPOUNDS 7439-92-1 1.5 (2) X METHANOL 67-56-1 f2.8E+4l X METHYLENECHLORIDE 75-09-2 3.5E+03 X £8.3E+41 METHYL ETHYL KETONE 78-93-3 £1.2E+4l NICKELAND NICKELCOMPOUNDS 7440-02-Q 1.0E+OO X £3.3E+01 STYRENE 100-42-5 f2.2E+4] TOLUENE 108-88-3 £3.7E+41**~YLENES** (M,O,P ISOMERS) 1210 4.4E+03 f2.2E+3J SUMMATION FORALLTOXICANTS PRIMARY TOXIC ENDPOINT NOTES: 1. Values in brackets ( ) are proposed and arefor informational purposes. Several ofthe revised acute RELs are higherthan the previous values meaning thatthe acute HHI forthe chemicalwill decrease. The numbers are notofficial until after Scientific Review Panel review and adoption by OEHHA. 2. Lead should be evaluated as a sub-chronic or**3~ay** exposure. References: CAPCOA 1993and OEHHA, AirTaxies HotSpots Program Risk Assessment Guidelines Part 1: Evaluation ofAcute Non-Cancer Health Effects, Draftfor Public Comment, December 1994.
September 1996 31 RESP EYE

X
X

X X

X

X X X X 

# I

ACUTE HEALTH HAZARD

INDEX

### 3. The fugitive release scenario.
Not all toxicants expected to be emitted from auto bodyshop operations (Appendix C) were reported as emittants from these facilities. The annual average emission rate for each toxicant was estimated as the average of all facilities reporting emissions of that toxicant. The maximum hourly emission rate has been estimated as 10 times the annual average emission rate. Because ofthe rural nature ofthe locale, these facilities may be considered small auto bodyshops. There may be significantly greater emission rates in larger shops.
Health risk estimates for the maximum exposed individual (MEl) 

### for this screening example are summarized in Table 9. A more detailed table is provided in Appendix K. Hexavalent chromium was responsible for almost the entire cancer risk (99.5 percent) and chronic health hazard index (96 percent). Xylenes were responsible for 88 percent ofthe acute health hazard index. Table 9 Summary ofMaximum Results ofGeneric Risk Assessment for a Generic Auto Bodyshop (Rural Basis) Exit Scenario Stack Stack with No Booth Raincap Individual Excess Cancer Risk per 

### 18 270 3400 million Chronic Health Hazard Index 

### 0.07 

### 1.0 12 Acute Health Hazard Index 

### 0.01 0.01 

### 2.0

A step-by-step, or "cookbook" approach for completion of a similar risk assessment is provided in Appendix 

### L. These values can be compared to significance levels ofeach air district. Values which have been highlighted (bold) 

### may be significant.
6.8 Refined Health Risk 

### Assessment and Special Applications 

### The assumptions used in this industrywide assessment may not be appropriate for facilities other than typical automotive recoating facilities. This might include facilities

September 1996 32 

# I

### that coat vehicles other than cars and light trucks, such as construction equipment or buses. Specifically, the types of coatings used may differ significantly from the formulations assumed for the industrywide assessment. Also, due to the larger size of the equipment coated, the release characteristics may be different. For these types of facilities, source specific data should be used. The dispersion modeling addressed only simple terrain and ground level receptors. Additional site specific evaluation may be needed ifthere is complex terrain or elevated (flagpole) receptors near a facility. Additionally, if the scoping level health risk assessment indicates that emissions from the facility may result in a significant health risk (cancer risk of IQ-5 

### or greater or a chronic or acute HI of 1 or greater), the task force recommends that the health risk assessment be refined before the public is formally notified of the risk assessment results or before risk reduction measures are contemplated. Refinements could include using facility specific emissions data instead ofthe generic profiles, determining actual release parameters and receptor data, use of site specific pathway data, use of actual local meteorological data, and possibly an alternative air dispersion model.
For details on performing a refined health risk assessment, consult the CAPCOA Air Toxics "Hot Spots" Program Risk Assessment Guidelines, October 1993. If a specific facility under review is sited in an area where nearby terrain features exceed the height of the stack, the models used in this study may not be applicable. A newly released model, ISCST3, designed for both flat and complex terrain applications may be more suitable. The SCREEN2 model may also be used with terrain adjustments. In either case site-specific terrain elevations must be input for use of the model in this mode. 

## 7.0 References
California Air Pollution Control Officers Association (CAPCOA), Air Toxics "Hot Spots" Program Revised 1992 Risk Assessment Guidelines, October 1993. California Air Pollution Control Officers Association (CAPCOA), Facility Prioritization Guidelines, July 1990. Ranzieri, A., Modeling Support Section, Technical Support Division, California Air Resources Board, Memorandum to J. Brooks, April11, 1994.

September 1996 33 

# I

# I



# Appendices

September 1996

## Appendix A- Glossary and Acronyms
AB 2588

- The Air 

### Toxics "Hot Spots" Information and Assessment Act of 1987 (California Health and Safety Code Section 44300 et. seq.) ACE 2588 -Computer model used for AB 2588 Health Risk Assessments developed by the Santa Barbara 

### Air Pollution Control District. It is a public-domain, multi-source, multi-pollutant, multi-pathway risk assessment model. It is consistent with the CAPCOA AirToxics "Hot Spots" Program Risk Assessment Guidelines. Air Pollution Control Device

- A device designed or used as a means of collecting, destroying, or collecting and removing airborne emissions from an emission source for subsequent release or treatment at another location. Antiglare/Safety Coating- A coating formulated to eliminate glare for safety purposes on interior surfaces of a vehicle and which shows a reflectance of25 or less on a 

### 600 gloss meter. Building Downwash·

- Aerodynamic turbulence induced by a nearby building that causes a pollutant emitted from an elevated source to be mixed rapidly toward the ground, resulting in higher ground level concentration immediately to the lee of the building than would otherwise occur. CAPCOA

- California Air Pollution Control Officers Association CAPCOA Air Toxics "Hot Spots" Program Risk Assessment Guidelines- The most recent version of the guidelines for preparation of health risk assessments pursuant to California Health and Safety Code Section 44360(b)(1) that has been approved by CAPCOA. Capture Efficiency

- The percentage, by weight, of the airborne emissions from an emission source or sources that is collected, contained, and conveyed to another location without loss ofthe airborne emissions. Control Efficiency

- The percentage, by weight, of a toxic air contaminant entering a control device that is not emitted to the atmosphere. Controlled Coatings

- Coatings formulated to comply with volatile organic compound requirements in district rules that are effective after January 1, 1995. Conventional (Air Atomized) Spray Application

- Use ofcompressed air to atomize the coating into tiny droplets and to spray the coating onto the surface of the article to be coated.

September 1996 A- 1 

# I

### Default Meteorology

- The same as screening meteorology. Dispersion Model

- A computer model using mathematical equations that represent the processes that occur when a facility releases a pollutant and also the movement of pollutants through the air. Factors such as distance from the ·source to exposed persons, wind speed and direction, and smokestack height affect these estimates. Dispersive Potential

- The expected ability of a source, based on its unique exit characteristics, to disperse pollutants. Filters

- Devices for collecting particulate matter exhausted from paint spray booths or prep stations before it is emitted to the ambient air. Dry filters can be divided into two types: pad type and baffle type. Baffle filters use baffle plates to force the air 

### to change direction and to provide a surface for the particulate to adhere to. Pad type filters are usually a woven mesh through which air flow passes. The particulate is trapped on the fllters. Fugitive - A release that cannot be characterized as from a stack (see definition of stack). Hand Application Methods

- The application ofcoatings by nonmechanical hand-held equipment including but not limited to paint brushes, hand rollers, caulking guns, trowels, spatulas, syringe daubers, rags, and sponges. Hazard Index

- The hazard index is an expression of the potential noncancer adverse health effects from emissions from a facility. It

### is calculated by dividing the estimated exposure level of a toxic air contaminant by the Reference Exposure Level. The individual hazard indices for each substance affecting the same target organ are summed to determine the total hazard index for each target organ. Health Risk Assessment- Health Risk Assessment is a tool used in risk management. It is the process that scientists and government officials use to estimate the potential increased risk of health problems in 

### people who are exposed to different amounts of toxic substances. A risk assessment for a toxic air pollutant combines results ofstudies on the health effects of various animal and human exposures to the pollutant with results of studies that estimate the level of people's exposures at different distances from the source ofthe pollutant. High-Volume, Low-Pressure Application (HVLP)

- Spray equipment which uses a high volume ofair delivered at pressures between 0.1 and 10 psig and which operates at a maximum fluid delivery pressure of50 psig.

September 1996 A-2 

# I

### ISCST2

- Industrial Source Complex

- Short Term dispersion model. A USEPA computer model for estimating ambient air concentrations assuming Gaussian diffusion. Lacquer

- Coating composition which is based on synthetic film-forming material dissolved in organic solvent and which dries primarily by solvent evaporation. Typical lacquers include those based on nitrocellulose derivatives, vinyl resins, acrylic resins, etc. Latexes

- Paint containing a stable aqueous dispersion of synthetic resin, produced by emulsion polymerization, as the principal constituent ofthe binder. Lifetime Excess Cancer Risk

- The increased probability ofcontracting cancer, above background levels, due to emissions from a facility, over a 70 year lifetime exposure period. Listed Compound

- Compound or class ofcompounds listed in Appendix A ofthe AB 2588 Criteria and Guidelines Regulation pursuant to California Health and Safety Code Section 44321. Maximum Exposed Individual 

# <MEn

- The receptor location that receives the maximum exposure from an emission source, where homes, businesses, or other places where people spend time are or could be located, whether or not there is an actual receptor at the location. The MEl is generally located outside a facility's property line. The MEl can also be referred to as the Point ofMaximum Impact (PMI). Metallic/Iridescent Topcoat

- Any coating which contains more than 5 

### g/1 (0.042 lb/gal) of metal or iridescent particles, as identified on a technical or material safety data sheet, as applied, where such particles are visible in the dried film. Multi-Stage Topcoat System - A topcoat system composed of either a basecoat/clearcoat system (2 

### stage), ora basecoat/midcoat/clearcoat system (3-stage). Nitrocellulose

- Another name for cellulose nitrate. The product obtained by treating cellulose with a mixture ofnitric and sulfuric acids. It

### is primarily used in the coatings industry as a base for lacquers. Overspray

- The percent by weight of the solid material in a coating that does not remain on the surface of an object being coated, but is emitted into the ambient air. The percent overspray can be calculated by subtracting the transfer efficiency of the spray equipment from 100%. 

### Prep Station

- Any spraying area that meets the requirements for a "Limited Spraying ·Area" from Section 45.207 of the Uniform Fire Code and that prevents the escape to

September 1996 A-3 

# I

### the atmosphere of overspray particulate using properly maintained filters and positive mechanical ventilation. Pretreatment Wash Primer- Any coating which contains a minimum of0.5% acid, by weight, is necessary to provide surface etching, and is applied directly to bare metal surfaces to provide corrosion resistance and adhesion. Primer

- Any coating which is applied prior to 

### the application of a topcoat for the purpose ofcorrosion resistance and adhesion ofthe topcoat. Primer Sealer

- Any coating applied prior to the application of a topcoat for the purpose of corrosion resistance and adhesion of the topcoat, color uniformity, and to promote the ability ofan undercoat to resist penetration by the topcoat. Primer Surfacer

- Any coating applied prior to the application of a topcoat for the purpose ofcorrosion resistance, adhesion ofthe topcoat, and which promotes a uniform surface by filling in 

### surface imperfections. Rain Cap

- A passive device or partial covering located at the exhaust of a ducting system used to deflect rain, snow, or other solid or liquid materials from entering the ducting system and obstructs the vertical flow ofexhaust from the stack. Receptor

- The theoretical or actual endpoint (usually given as a location) of an emission impact. Reference Exposure Level (REL)

- An indication ofpotential adverse health effects. An REL is a concentration level or dose at or below which adverse health effects are not anticipated. RELs are generally based on the most sensitive adverse health effect reported in the medical and toxicological literature. Additionally, RELs are designed to protect the most sensitive individuals in the population by the inclusion ofmargins of safety. It 

### should be noted that exceeding the REL does not automatically indicate a health impact. Relative Dispersion Factor- See X/Q. Representative Meteorology

- At least one complete year of hourly meteorological data that is representative of the project site. Whether a data set is valid and representative of the project site should be determined with the reviewing agency before extensive modeling is performed. Representative data are designed to evaluate the maximum 1-hour concentration as well as longer term average concentrations up to one year (annual). SCREEN2- A screening level U.S. EPA dispersion model.

September 1996 A-4 

# I

### Screening Level Health Risk Assessment - A health risk assessment performed using a screening level dispersion model and other worst case assumptions to arrive at a conservative estimate ofpotential health risks. Screening Meteorology - A matrix of wind speed and stability class combinations which are designed to evaluate a wide range ofmeteorological conditions possible on a 1-hour average basis. The intent is to model all wind speed and stability class combinations possible. In this manner, the worst-case meteorological condition should be evaluated and the maximum 1-hour concentration will be determined. The matrix of wind speed and stability class combinations may be found as inputs to the SCREEN2 model. Sealer

- Coating formulated for and applied to a substrate to prevent subsequent coatings from being absorbed by the substrate, or to prevent harm to subsequent coatings by materials in the substrate. Significant Health Risk - Ahealth risk estimated through a health risk assessment and determined by a district to be significant pursuant to California Health and Safety Code Section 44362(b). Solvent

- Liquid, usually volatile, which is used in the manufacture ofpaint to dissolve or disperse the fUm-forming constituents, and which evaporates during drying and therefore does not become a part or the dried film. Solvents are used to control the consistency and character ofthe finish and to regulate application properties. Specialty Coatings

- Coatings which are necessary due to unusual and uncommonjob performance requirements. these coatings include, bufare not limited to, weld-thru primers, adhesion promoters, uniform finish blenders, elastomeric materials, gloss promoters, gloss flatteners, bright metal trim repair, antiglare/safety coatings, impact resistant coatings, rubberized asphaltic underbody coatings, water hold-out coatings, and multicolor coatings that exhibit more than one color when applied from a single container. Spray Booth

- Any power ventilated structure ofvarying dimensions and construction provided to enclose or accommodate a spraying operation and which meets the Uniform Fire Code. A spray booth shall confine and limit, by dry or wet filtration, the escape to the atmosphere ofoverspray particulate matter. Stack - A vertical pipe or flue that exhausts to the atmosphere. A stack can be characterized by a height, diameter, exhaust temperature, velocity, and flow rate.

September 1996 

### A-5 

# I

### Surfacer

- Pigmen[ed composition for filling minor irregularities to obtain a smooth, uniform surface preparatory to applying finish coats; usually applied over a primer and sandpapered for smoothness. Top Coat

- Any coating applied over a primer or an original OEM finish for the purpose of protec:tion or appearance. Either a basecoat/clearcoat system or a 3-stage coating system is consideredjointly as a topcoat. Transfer Efficiency

- The ratio of the weight of coating solids which adhere to the object being coated to the weight amount of coating solids used in 

### the application process, expressed as a percentage. Uncontrolled Coatings

- Coatings formulated to comply with volatile organic compound requirements 

### in district rules that are effective prior to January 1, 1995. Undercoat- Any pretreatment wash primer, primer, primer surfacer, orprimer sealer. Unit Risk Factor- The estimated probability ofa person contracting cancer as a result of constant exposure to an ambient concentration of 1 )lg/m3 

### over a 70 year lifetime. The derivation of the carcinogenic unit risk factor takes into account the available information on pharmacokinetics, mechanism ofcarcinogenic action, and the effect of different models on low dose extrapolation. These values are generally the 95% upper confidence limit on risk; the actual excess cancer risks are not likely to be higher, and may be lower than those estimated using these procedures. Volatile Organic Compounds (VOC)

- Volatile organic compound means any compound containing at least one atom ofcarbon, except methane, carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, ammonium carbonate, 1,1,!-trichloroethane,

. methylene chloride, trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), chlorodifluoromethane (HCFC-22), trifluoromethane (HCF-23), 1,1,1-trichloro-2,2,2-trifluoroethane (CFC-113), 1,2- dichloro-1, 1,2,2-tetra.flouroethane (CFC-114), chloropentafluoroethane (CFC-115), 2,2-dichloro-1,1, 1-trifluoroethane (HCFC-123), 2-chlorotetrafluorethane (HCFC-124), pentafluoroethane (HFC-125), 1,1,2,2-tetrafluorothane (HFC-134), 1,1,1,2- tetrafluoroethane (HFC-134a), 1, 1-dichloro-1-fluoroethane (HCFC-14lb), 1-chloro1,1-difluoroethane (HCFC-142b), 1,1,1-trifluoroethane (HFC-143a), 1,1- difluoroethane (HFC-152a), and the following four classes of perfluorocarbon (PFC) compounds: 1. cyclic,'branched, or linear, completely fluorinated alkanes, 2. cyclic, branched, or linear, completely fluorinated ethers with no unsaturations, 3. cyclic, branched, or linear, completely fluorinated tertiary amines with no unsaturations, and

September 1996 A-6 

# I

### 4. saturated perfluorocarbons containing sulfur with sulfur bonds only to carbon and fluorine. 

### Waterbornes- Latex paints and paints containing water-soluble binders. 

### Water Curtain

- Devices for collecting particulate matter exhausted from paint spray booths or prep stat.lons before it is emitted to the ambient air. Water flows down a baffle plate which enhances the capture of particles and flow washes the particulate matter down to a circulating tank. 

### Worst-case Meteorology

- A particular meteorological scenario which refers to one wind speed, wind direction, ambient air temperature, stability class, and atmospheric mixing height, which results in the calculation of the maximum 1-hour concentration for a given release scenario. X/Q - A relative dispersion factor, i.e., the predicted concentration ofa toxicant based on a unit emission rate ofthat toxicant. X/Q is usually expressed in units of !lgfm3 per g/s, and when multiplied by an emission rate in g/s yields a concentration in 11g/m3

.

September 1996 A-7 

# I

## Appendix B - Flowchart

Identify SUbject Facilities

Send Questionnaires to Facilities

calculate Eaissions Using Questionnaire Data and CARS Generic

COat1119 ProfUes

calculate Priority Score Using Oefault Receptor Proxl•ity

Refine Prioritization Using**~tual** Receptor Proxt•ity

Refine Release Paraaeters. Receptor Location. Meteorology, Etc.



### September Perfor• Refined Health Rlsk Assessaent

Public Notification ReQuired Risk Reduction May Be Reoutred

Send Eatsston Data to CARS



### 1996 No

No

No

No

No



### B- 1 Send E•1ssion Data to CARS

Send Eaission Data to CARB

Send Eaission Data to CARB

Send Eaission Data to CARS

Send Eaisslon Data to CARS 

# I(/l 

## .g
.-**~** 

### 3 0"**~** 

## ..,

....... \0 \0 

# "'

() I 

### Appendix C - List ofCompounds Addressed in Health Risk Assessment with Toxicity Values

TOXICITY DATA FOR CANCER EVALUATIONS TOXICITY DATA FOR NON-CANCER CHRONIC EVALUATIONS TOXICITY DATA FOR ACUTE EVALUATIONS CHEMICAL PREUM. ORAL SYSTEM OR ORGAN EFFECTED TOXIC ENDPOINT OR TARGET ORGAN CHEMICAL NAME ABSTRACT UNIT RISK POTENC MULTIPATHWAY POTENCY MULTIPATHWAY cv CNSI IMMUN KIDN NUMBER FACTOR VALUE(1 FACTOR(2l VALUE(3) REL**FACT~(2)** BL PNS (orr'31ug) (orr'3/uQ) CONTR UNCONTRllmglkg-c!}.i (uglorr'3) CONTR UNCONTR CADMIUM AND COMPOUNDS 74-4G-43-9**4.2E~** NA 1.00 1.00 NA 3.5E+OO 16.86 38.93 X CHROMIUM (HEXAVALEtm 18540-29-9 1.4E-01 NA 1.01 1.03 0.42 2.0E-03 1.00 1.00 X COPPER AND COMPOUNDS 74-40-50-8 NA NA 1.00 1.00 2.4E+OO 1.00 1.00 ETHYLBENZENE 10G-41-4 NA NA 1.00 1.00 1.0E+3)(7) 1.00 1.00 ETHYLENE GLYCOL 111-76-2 NA NA 1.00 1.00 2.0E+01 1.00 1.00

(MONO)BUTYL ETHER (BUTYL CELLOSOLVE. 2-BUTOXYETHANOLl ETHYLENE GLYCOL (MONO)- NA NA 1.00 1.00 8.4E+01 1.00 1.00

ETHYL ETHER ACETATE ISOPROPANOL 117-63-0 NA NA 1.00 1.00 NA 1.00 1.00 LEAD AND COMPOUNDS 7439-92-1 1.2E-05 NA 1.00 1.00 NA 1.5E+OO 1.00 1.00 X X X X METHANOL 87-56-1 NA NA 1.00 1.00 6.2E+02 1.00 1.00 X METHYLENE CHLORIDE 75-09-2 1.0E-08 NA 1.00 1.00 3.0E+03 1.00 1.00 X METHYL ETHYL KETONE 78-93-3 NA NA 1.00 1.00 1.0E+3l 1.00 1.00 METHYL ISOBUTYL KETONE 106-10-1 NA NA 1.00 1.00 NA 1.00 1.00 NICKELAND NICKELCOMPOUNDS 7440-02-0 2.6E-04 NA 1.00 1.00 2.4E-01 1.00 1.00 X X NA PROPYLENE GLYCOL 107-98-2 NA NA 1.00 1.00 (2.0E+3} 1.00 1.00 X

MONOMETHYL ETHER STYRENE 10G-42-5 NA 5.7E-07 1.00 1.00 7.0E+02 1.00 1.00 TOLUENE 106-88-3 NA NA 1.00 1.00 2.0E+02 1.00 1.00 X XYLENES (M,O,P ISOMERS) 1210 NA NA 1.00 1.00 3.0E+02 1.00 1.00 ZINC AND COMPOUNDS

----- 7440-68-8 NA NA 1.00 1.00 3.5E+01 1.00 1.00 cl\_

- -'· NOTES: 1. Preliminary potoncy values should be used atthe discretion ofthe Dtslllcl 2. Multipathway factors are the ratio ofthe Iottiriskto Inhalation risk. These have been developed using HRA92, version 1.1, a muftlpathwayexpoSWll model developedjolnUy

by the California Air Resources Board and the Oflk:e of Environmental Health HazardAssessment Assumptions and parameters used to develop the Emission rete • 1g/s XIQ= 1 DepositionveloCity• 0.02 m/s lorcontroHed sources and0.05 m/sloruncontroHed sources 70-yearexposure Fraction ofhomegrown fnoils andvegetables consumed • 10% Pathways/sources include inhalation, Ingestion ofsoH (plea), homegtownvegelables, mothe(s milk(lorona yeai) and skin contact. 3. Oral potencyvllluas and oral RELs are used in the derivation of muhlpathway factors. 4. A multipolhwllyfadorof 1.00 oohould be used to calculatethe non-cancerclvonlchazard Indexforthe respiratoryandpolnt. 5. NA • Not avaUoble. e. Values In brackots ( )are proposed and are lorlnlormationat purpons. Several ofthe ravtsed llalltRELIare higherthanthe previous values meaning thattheacute HHI

lorthe chemical w11 decrease. The numbers ora notofficial unlit aflarSclanUftc ReviewP-1ravlawandadoption by OEHHA. GIIREPR RESP ORAL ACUTE CNSI IMMUN REPRO RESP LV**1,:;~** REL PNS DEV'L (uglorr'3) X4 1.0E-03 NA X X S.OE-03 NA X 1.0E+01 X 11.0E+:n_ X NA X X 1.5E+03 X X (5.5E+3)

X X NA 14.11E+4 X X 1.5 8 X (2.8E+4 X X 3.5E+03 X 18.3E+41 X 12E+4 X NA X 1.0E+OO X 13.3E+OI

.

NA X (2.2E+4 X X IHE+.n X X X 4.4E+03 X 12.2E+31 X NA

7. The 3 chemicalswtth voluas In brackots ( } oro eubjactto the Hot SpotsActand RELIlorthem are being developed by OEHHA. The chronic RELI Nsled are USEPA Reference Concentrations (RIC). Ifanyofth118 chamlcals drive the chronic Hazard

Index in ascreening risk assessment OEHHA stallshould be consulted loradditional guidance. a. Lead should be evaluated as asub-chronicor30-dayexposure. References: CAPCOA 1993 and OEHHA, AirToxlcs Hot Spots Program RiskAssessment GuldeHna• Part 1: Evaluation ofAcute Non-CancerHealth Eflacta, Draftlor Pubtk: Comment December 1994. EYE

X

X-tJtJCIIUIA LJ - vJ-\nD 

## IVIanuracturers**~urvey** 

### STATE OF CALIFORNIA PETE WILSON, Governo 

### AIR RESOURCES BOARD 2020 l STREET P.O. BOX 2815 SACRAMENTO, CA 95812



### We are requesting your assistance in the development of an industry-wide emission inventory for automotive refinishing emissions in California pursuant to California's Air Taxies "Hot Spots" Information and Assessment Act of 1987. We are specifically requesting automotive coatings formulation data from manufacturers who sell coatings in California. These data will be used to develop an air taxies emission inventory under the guidance of a committee comprised of staffs of local air pollution control districts (coordinated by the California Air Pollution Officers Association, CAPCOA} and the Air Resources Board. The Hot Spots Act established a statewide program mandating an inventory of air taxies emissions from individual facilities. To reduce the time and effort required to comply with the reporting requirements, the Act allows local air districts to prepare "industry-wide" emission inventories and risk assessments for certain classes of small businesses, as long as specific conditions are met. Because the automotive refinishing industry consists mainly of small businesses which meet the conditions imposed by the· Act, with the assistance of coating manufacturers, the districts and the ARB-· are developing industry-wide emission inventory and risk assessment

- · guidelines for the automotive refinishing industry.

· ..-;

...... 

### To establish a basis for the industry-wide inventory, and to eliminate duplicative requests to your company from vario'us districts,·we plan to . . 

### .**~.-:** CJ
-·-( 

### condense coating formulation data to create a database of the compositions ·-, of common automotive refinishing coatings products. These generic data will be supplied to local districts for this use in a survey of autobody shops in each air district. Business-es will be asked to report the volumes of coatings and solvents applied during the reporting year for a limited ·number of general product categories. The enclosed instructions indicate which data fields we are interested in and how to complete the data request. Richard Bode of my staff has been working with you and Jim Sell of the National Paints and Coatings Association to identify data fields and formats. We want to collect these data via spreadsheets.

September 1996 D- 1 

# I

### We ask that you provide the requested data by June 12, 1995, and send your completed diskette to: California Air Resources Board Attn: Richard Bode Technical Support Division P.O. Box 2815 Sacramento, CA 95812-2815 Thank you for your assistance with this data request. If you have any questions regarding this request, please contact Richard Bode, Manager of the Emissions Inventory Methods Section at (916) 322-3807.

Enclosures
cc: Richard Bode Jim Sell

September 1996 

### Sincerely,

-

# ..__3~;( ____

_ Terry McGuire, Chief Technical Support Division

V-2 

# I

## SURVEY PACKET CONTENTS Gontents I. Manufacturer's Information I 

## II. Instructions for Completing Survey 2 

## III.· Definitions of Survey Terms 4 

## IV. Example of Spreadsheet 7 V. Disclosure of Public Records/Submissions of Confidential Data 10

September 1996 D-3

## MANUFACTURER'S INFORMATION Pleas·e complete the information on this page, and return this page along with the completed survey diskette to:

If you have questions, please call: California Air Resources Board P.0. Box 2815 

## Sacramento, CA 95812-2815**~ttn:** 

## Richard Bode/TSD Richard Bode California Air Resources Board Phone: (916) 322-3807 

## Fax: (916) 323-1075 

## Company Name:

__________________________________________________ __ Address:



# ----------------------------------------------------------------

Contact Person:----------------------------- Tit1 e :

___________________________ Phone:

_______________________________ Date:

______________________ __ Type of Spreadsheet Program (ex. Quattro Pro)=------------------------------- Format of data:

____________ Name of Data File:

_________ _ Comments:



# -------------------------------------------------------

September 1996 D-4

## INSTRUCTIONS FOR COMPLETING AUTOBODY COATINGS MANUFACTURER'S SURVEY BACKGROUND: The California Air Resources Board (ARB) is requesting information on volatile organic compound (VOC) content, other organics-and toxic constituents in each of the listed categories of coatings used in the automotive refinishing industry in California. Please refer to the attached Definitions of Survey Terms for the definitions of the coating categories. The categories include: precoat pretreatment wash primer primer surfacer primer sealer lacquer metallic/iridescent topcoat single stage (monocoat) topcoat base coats clearcoats surface cleaners specialty coatings miscellaneous, specify

- eg. excess amounts of mineral spirits and other thinners not included in the ready to spray products. Within each major catego.ry listed above, you may manufacture several subcategories of coatings based on different chemistries. Please refer to the attached Definitions of Survey Terms for the definitions of the coating subcategories. For example, you may manufacture both a solvent-borne and a waterborne primary sealer, or topcoats based on different polymers. If these subcategories differ greatly in VOC and toxic compound content, please report them separately. We have identified the following subcategories: solvent-borne water-borne South Coast only others, based on manufacturer's formulations To ensure that all types of products sold in California are . represented, we are requesting information for uncontrolled and controlled formulations. Uncontrolled formulations are coatings formulated for use in a district that does not have a regulation to limit the volatile organic compound (VOC) content. There are two types of controlled formulations: "pre-1995" which are coatings formulated to be compliant with. the VOC limits established before 1995 and "post 1995" which are coatings formulated to comply with the VOC limits effective after 1995.

2 

## September 1996 

### D-5 

# I

## DATA FIELDS We understand that the product data will be based on ready to spray products as .defined in the attached Definitions of Survey Terms. You will be reporting all of the compounds that are in your coating products, therefore, we are not enclosing a list of substances compiled by ARB staff. Please list all formulations separately. Do not aggregate formulas of products containing metals with those products not containing metals. For·uncontrolled, controlled "pre-1995" and controlled •post-1995" formulations please enter the formulations for products in each coating category and subcategory. The following information should be provided: Stock. #\Item I
- 

## the number that is used (by**t~~** 

## manufacturer) to .identify a · unique coating. Trade Name

- the common name of the coating listed an· the can. Sales Volume %

- 

## the percent sales volume that a particular coating sold in California represents of the total products sold in California. Please report this to the nearest half of a**pe~cent.** 

## This data should be no older than 1994 and ideally is a projection of 1995 for each of the control categories.

. Coating Weight

- the weight of each coating in pounds per gallon to three significant figures (X.XX). Total VOC Content

- the total VOC·content in pounds per gallon to three significant digits. Substance Name

- the chemical name of the substance. Do not use brand names or combined compound names. Please list metals after the other substances as shown in the example spreadsheet on page 7. CAS I
- 

## Chemical Abstract Number of the substance. Substance %

- the %weight of each compound. Include VOC's, other organics (e.g. 1,1,1-trichloroethane, methylene chloride) and taxies. Please report VOC's and other organics to 1% and taxies (e.g. metals) to 0.1%. We are specifically interested in hexavalent chromium compounds due to their high toxicity. For substances known to be present at levels lower than this, ind1cate VOC's· and other organics as "<1%" if <1% and >.1% and indicate taxies as "<0.1%" if <0.1 and**>.01.~** 

## Please·report data that is more accurate than these ranges if.it is readily available. We would like the data fields entered into your spreadsheet in the following order: stock number\item number, trade name, sales volume percent, coating weight, total VOC content, substance name, CAS number, and substance percent. Please refer to the example of the spreadsheet on page 7. Any spreadsheet program can be used. We can accept the data in most formats. However, we prefer that you submit your data in Quattro Pro format. Most spreadsheets can export data into a Quattro Pro format.

3 

### September 1996 

### D-6 

# I

## DEFINITION OF SURVEY TERMS

. California Air Resources Board -Automotive Refinishing Survey Antiglare/Safety Coating: Acoating which minimizes light reflection for safety purposes. Basecoat: Apigmented topcoat which is the first topcoat applied as part of a multi-stage topcoat system. Clearcoat: Atopcoat which contains no pigments or only transparent pigments and which is the final topcoat applied as a part of a multi-stage topcoat system. Controlled Coatings: Coatings formulated to comply with volatile organic compound (VOC) requirements in district rules. This category includes coatings formulated to comply with VOC limits established before 1995, as well as coatings formulated to comply with VOC limits set for 1995. Groundcoat: Porcelain enamel applied directly to the base metal to function as an intermediate layer between the metal and the cover coat. Report as basecoat. Lacquer: Coating composition which is based on synthetic thermoplastic film-forming material dissolved in organic solvent and which dries primarily by solvent evaporation. Typical lacquers include those based on nitrocellulose, other cellulose derivatives, vinyl resins, acrylic resins, etc. Latexes: Paint containing a stable aqueous dispersion of synthetic resin, produced by emulsion polymerization, as the principal constituent of the binder. Metallic/Iridescent Topcoat: Any coating which contains more than 5 g/1 (.04Z lb/gal) of metal or iridescent particles, as identified on a technical or material safety data sheet, as applied, where such particles are visible in the dried film. Midcoat: A semi-transparent topcoat which is the middle topcoat applied as part of a three-stage**t"op~oat** 

## system. Report as basecoat. Miscellaneous, specify: Acategory to be used for products that do not fall into any of the other categories. For example, excess volumes of mineral spirits and other thinners not included in the ready to spray products. Monocoat: See Single-Stage Topcoat. Multi-Stage Topcoat System: Atopcoat system composed of either a basecoat/clearcoat, a basecoat/midcoat/clearcoat, or a groundcoat/basecoat/midcoat/clearcoat. Nitrocellulose: Another name for cellulose nitrate. The product obtained by treating cellulose with a mixture of nitric and sulfuric acids. It is primarily used in the coatings industry as a base for lacquers.

September 1996 4 D-7 

# I

## .Precoat: Any coating which is applied to bare metal primarily to deactivate the metal surface prior to application of a subsequent water-base primer surfacer. Pretreatment Wash Primer: Any coating which contains a minimum of 0.5% acid by weight, is necessary to provide surface etching and is applied directly to bare metal surfaces to provide corrosion resistance and adhesion. Primer Sealer: Any coating applied prior to the application of a topcoat for the purpose of corrosion resistance, adhesion of the topcoat, color uniformity, and to promote the ability of an undercoat to resist penetration by the topcoat. Primer Surfacer: Any coating applied prior to**~he** 

## application of a topcoat for the purpose of corrosion resistance, adhesion of the topcoat, and which promotes a uniform surface by filling in.surface imperfections. Ready to Spray: Thinner and catalyst added by the end user according to manufacturer's instructions on coating container. Sealer: Coating formulated for and applied to a substrate to prevent subsequent coatings from being absorbed by the substrate, or to prevent harm to subsequent coatings by materials in the substrate. Single-Stage Topcoat: Acoating that has the attributes of both a basecoat and a clearcoat; is applied as a single coating and is meant to be the last coat applied in a coating system. Solvent: Liquid, usually volatile, which is used .in the manufacture of paint to dissolve or disperse the film-forming constituents, and which evaporates during drying and therefore does not become a part of the dried film. Solvents are used to control the consistency and character of the finish and to regulate application properties. Solvent-borne: Coatings which contain .solvent as the carrier. South Coast only: Coatings that meet South Coast Rule 1151. Speciality Coatings: Unique coatings and compliant coatings with additives which are necessary due to unusual job.performance requirements. These coatings include, but are_not limited to**weld~thru** 

## primers, adhesion promoters, uniform finish blenders, elastomeric materials, gloss flatteners, bright metal trim repair, and antiglare/safety coatings. ·

. . 

## Surfacer: Pigmented composition for filling minor irregularities to·obtain a smooth, uniform surface preparatory to applying finish coats; usually applied over a primer and sandpapered for smoothness. Surface Cleaner: Asolvent applied before undercoats or any other stages that is used to insure the surface is free of wax, dirt, or other contaminants. Top Coat: Is a coating applied over other coatings in a coating system; usually applied over a primer, undercoaters or surfacers; generally for the purpose of appearance, identification, or protection.

September 1996 5 

### D-8

## Top Coat: Is a coating applied over other coatings in a coating system; usually applied over a primer, undercoaters or surfacers; generally for the purpose of appearance, identification, or protection. Uncontrolled Coatings: Coatings formulated for use in a district that do not have a regulation that limits the volatile organic compound (VOC) content of coatings used for automobile refinishing. Volatile Organic Compounds (VOC): Volatile organic compound means any compound containing at least one atom of carbon, except methane, carbon monoxide, carbon dioxide, carbonic acid, metallic carbides**~r** 

## carbonates, ammonium carbonate, 1,1,1-trichloroethane, methylene chloride, 'trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), chlorodifluoromethane (HCFC-22), trifluoromethane (HCF-23) 7 

## 1,1,1-trichloro-2,2,2,-trifluoroethane**(CFC-11~), 1,2~dichloro-1,1,2,2-tetrafluoroethane**  

## (CFC-114), chloropentafluoroethane (CFC-115}, 2,2-dichloro-1,1,1-trifluoroethane (HCFC-123), 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124), pentafluoroethane (HFC-125), 1,1,2,2-tetrafluorethane (HFC-134), 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1- difluoroethane (HCFC-142b), 1,1,1-trifluoroethane (HFC-143a),

_ 1,1-difluoroethane (HFC-152a), and the following four classes of perfluorocarbon (PFC) compounds: (1) cyclic, branched, or linear, completely fluorinated alkanes; (2)- cyclic, branched, or linear, completely fluorinated eithers with no unsaturations; (3) cyclic, branched, or linear, completely fluorinated tertiary amines with no unsaturations, and, (4) saturated perfluorocarbons containing sulfur with sulfur bonds only to carbon and fluorine. Waterbornes: Latex paints and paints containing water-soluble binders or water-dispersed binder.

September 1996 6 

### D-9I COATINGS Coating Category Subcategory PRECOAT

Solvent-borne Substances

VOC's

Substance Name

Xxxxxx xxxxxx Xxxxxx xxxxxx Xxxxxx xxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx OTHER ORGANICS 1,1 1-trichloroethane methylene chloride

Xxxxxxxxxxxx METALS Xxxxxxxxxxxx Xxxxxx xxxxxx 

### I Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx PRECOAT

Solvent-borne Substances

VOC's

Substance Name

Xxxxxx xxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx OTHER ORGANICS 1 1 1-trichloroethane methYlene chloride

Xxxxxxxxxxxx METALS Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx etc.


### September Stock#/Item #

1120
CAS#

1125
CAS#



### 1996 

## SPREADSHEET EXAMPLE

Trade Name

Xxxxx Yyyyy

Substance% (weiahtl

YyyyyZ:z:zzz.

Substance% {weight}



## - AUTOBOOY PAINT MANUFACTURER'S SURVEY UNCONTROLLED FORMULATIONS
- Projected 1995 SALES if possible
Sales Volume %

10.5

50.0



### 7 

### D- 10 I Coating Weight Total VOC Content lbs I aa lbs I ga

6.01 3.02

4.43 1.25 

# ICOATINGS Coating Category Stock #/Item # Subcategory PRIMER SEALER

Solvent-borne 3142 Substances VOC's Substance Name CAS#

Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxxxxxxxx Xxxxxx

### xxxxxx OTHER ORGANICS 1.1 1-trichloroethane methylene chloride

Xxxxxx

### xxxxxx METALS

Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx PRIMER SEALER

Solvent-borne 

### I 3120 Substances

VOC's Substance Name CAS# Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx Xxxxxx

### xxxxxx OTHER ORGANICS 1 1 1-trichloroethane methylene chloride

Xxxxxx

### xxxxxx METALS

Xxxxxx

### xxxxxx Xxxxxx xxxxxx Xxxxxxxxxxxx Xxxxxx xxxxxx Xxxxxx xxxxxx I etc. 

### September 1996 Trade Name

Aaaaa Bbbbbb

Substance% (weiqht)



### I

Ccccc Oddddd

Substance% (weight) AUTOBOOY PAINT MANUFACTURER'S SURVEY CONTROLLED RPRE -1995"- PROJECTED 1995 SALES ifpossible

Sales Volume %

25.5

30.0



### 8



### D- 11 Coatinq Weight lbs I qa

5.55



### -

4.85 Total VOC Content lbs I qa

1.33

215

I 

# I

# I

AUTOBODY PAINT MANUFACTURER'S SURVEY CONTROLLED "POST - 1995" • PROJECTED 1995 SALES If ooss COATINGS Coatino Cateoorv Stock #/Item # Trade Name Sales Volume % Coating Weight Total VOC Content Subcategory lbs I eta lbs I ga METALLIC TOPCOAT

Solvent-borne 4000 WinterGreen 45.0 5.95 0.875 Substances VOC's Substance Name CAS# Substance% (weioht) Xxxxxx:xxxxxx Xxxxxxxxxxxx Xxxxxx:xxxxxx Xxxxxxxxxxxx 

### I Xxxxxx:xxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx Xxxxxxxxxxxx OTHER ORGANICS 

### I 1 1 1-trichloroethane methviene chloride 

### I Xxxxxx:xxxxxx METALS I

Xxxxxx:xxxxxx 

### I Xxxxxxxxxxxx I Xxxxxx:xxxxxx Xxxxxx:

### xxxxxx I Xxxxxx:

### xxxxxx I Xxxxxxxxxxxx METALUCTOPCOAT

Solvent-borne 

### I 4002 Pearl Gamet 75.0 5.95 1.05 Substances VOCs Substance Name CAS# Substance% (weioht) 

### I Xxxxxxxxxxxx 

### I Xxxxxxxxxxxx I Xxxxxx:

### xxxxxx I 

## - I Xxxxxx XXX)OQ( Xxxxxx

### xxxxxx· OTHER ORGANICS 1 1 1-trichloroethane methvlene chloride I

Xxxxxxxxxxxx 

### I METALS

Xxxxxx xxxxxx I Xxxxxx xxxxxx Xxxxxxxxxxxx Xxxxxx xxxxxx I Xxxxxx xxxxxx I I etc. 

### September 1996§ 90803 DARCLAYS CALIFORNIACODEOFREGULATIONS Title 17 (d) Exhdisaict**m:~.y**recover:administntivecoststothedisaictofcol1-.:tiugthe fees pursu:uuto these**rcsul:~.tions.** Atthe requestoftheSt:atc a.rd, adistrict sh:ill provideto the St:ltc Do:ud. within 30d:lys ofthe 11:qUest,**subsl:lllti:~.tion**ofadminiscr:uive costs. Non:: Aulhoricy cited: Scc:tions 39600,**39~1** a.nd 39612. Health a.nd Safety Code. Rcfemtcc: Scetioru 39002,39500, 39600 a.nd 39612. Health and Safety Code. HIS1"0RY I.New section filed 10-6-89;operative 11-5-a9**(Re~sta'** 89,No •.C3). 2.Amendmenttosubscctiom(c) and(d)filed :l-6-91;operative3-6-91pursuant

toGovcmmcntCodcscetion 11346.2**~gistcr9l,No.** 1.C). 3.Editorial**~**ofprintingerrorin subsection (a) (RegiSter92,No.2). f 90803. Failure of Facility to Pay Fees.

Intheeventanydisaictisunabletocollecttheassessedfcc fromany sourceduetocb:cumstancesbeycodthecoattolofthedistrict,including butnotlimiccdtofacilityclosure,emissionqumtificationcaoa,orrcfusaloftheoperatortopaydespitepermitrevocation and!orocherenforcementaction, suchdistrictshallnotifythe ExecutiveOfflCcroftheState Board. Fordemonstrated goodcause, the districtmaybe relievedfrom thatportionofthe feesthedistrictis 11:qUiredtocollectandremittothe stateas setfonb insection90800orsection90800.1 orsection90800.2 orsection90800.3orsection90800.4orsection90800.5.Nothingherein shallrelieve the operatorfrom any obligation to pa.y any fees assessed pursumttothisregulation. Non::Aulhoritycitcd:Scc:t.ion39600,39601 and39612.HealthmelSafcryCodc. Rc!CI:CDCC: Scc:tioas 39002,39SOO, 39600and 39612.Hc.Uth mel S&!c:tyCode. HlsroRY I.New section filed 10-6-89;operative ll-5-a9(Rcgista89,No. .cJ). · 2. Amc:Ddmcnt filed 3-6-91; opc:ntive 3-6-91 puauant toGovcmmcatCede

section 11346.2(R.c;istcr91,No. 1.C). 3.Amc::ldmcnt filed 9-18-91;opcntive 1o-t8-91 (Rcpsu:r92.No.2). \meadmcntfiled &-11-92; opc:ntive9-lo-92(Rcgisu:r92,No. 33). ..unendmcntfiled 6-15-93;opc:ntive·7-1-93 (Rqistcr93,No.25). 6.Amcodtncntfiled 11-28-94;opcntive 12-28-94**~g!sla**94,No • .CS). 

### Subchapter4. Disclosure of Public Records Article 1. General
§ 91000. Scopeand Purpose.

Thissubchaptershall applyto all**~csts** tothe stateboardunderthe CalifomiaPublicRecordsAct(GovcmmcntCodeSections6250ctseq.) rexthedisclosureofpublicI1:COttisexformaintainingthecoafidcntiality ofdatareceivedbythe stateboard.Written guidelines shall-govcmthe intemalreview ofsuchrequests. Non:: At:thority cited: Scctiom 39600 and**3~l(a),** Health mel SafetyCode. Rc!cteace: C.WContia Public: Rcc:ords N:l.. Olaptcr3.5**(comm~** withSec· cioa 6250),Division 7,Govc:mmcntCode. HlsroltY 1. New Subchapter 4 (Scc:tioas 91000**lhrcu~** 91022. aot coasccutive) filed

l-26-73;cfi'cc:tive lhinlc:thdaylher=ftcr**~psu:r**73,No • .c). 2.AmendmentfUcd9-2&-73;cffcc:tivethirtieth d.ay lhc:ia!tcr(Rc;isu:r73.No.

39). 3.AmendmentoCNOTEfalcd 3-1&-77;effcc:tivethirUethd.aylbc:teaftcr(Rc:;is·

tcr77, No. 12). .C.Rcpalcrandncwsectionfiled to-5-al;effectivethinicthd.aythcrcaftcr(Rcg·

isu:r82.No. 41).
• q1001. Disclosure Polley. .tisthepolicyofthestatebo:ud**ch:~.t**:illrecords Dotexemptedfromdisclosurebystate**l:~.w** sh:lllbeopenforpublicinspectionwiththele:&Stpos· siblc**dcl:~.y** andexpenseto the requesting puty.



### .... .

### --.

## -· .·. 

### .. 

## .. September 1996 IIJSTOI!.Y l.Amendmentfa.lcd 9-28-73;cCfeetive lhinicth.Uylhcrca.Ctcr**~r;istcr**73,No.

39). 2.Amendmentand new NOTEfLied 3-18-77;effective lhinicth .Uythc:rca.{u:r

(Rcr;istcr77, No. 12). 3.Rcp=leundnewsectionfLied to-5-82;eCfcc:tivethirtieth.Uy**thc:rca.ftc:r~g·**

istcr82,No.41). 

### Article 2- Board's Requests for Information § 91010. RequestProcedure.

Thestatebaudshallgivenoticetoanypcaonfromwhomitrequests informationthattheinformationprovidedmaybereleased(1)tothepublicuponrequest,excepttradesecretswhicharcnotemissiondataorother informationwhichisexemptfrom disclosure orthedisclosureofwhich is prohibited bylaw, and (2) to the federal Environmental Protection Agency,whichprotectstradesecretsasprovidediuSection 114(c)ofthe CC:lllAirActandamendmentsthcrcto(42USC7401 etseq.)andinfed· cralregulations. Non:: Authority cited: Sections 39600, 39601 and 39602. Health and Safety Code. Rc!crcncc: Scctiom 39701, .CISlO.41Sll, .C!Sl2 and .C270S, Health and Sa!etyCode; andSection6253,GovcmmcntCode. HlsroRY I.AmcadmcntoC subscctioas (a) and (b) fiL:d 9-28-73: effective rhi.nicth !Uy

lhcn:&ftcr(Register73,No.39). 2.Amendmentofsubs.c:ctioa(a),(b) and(e),and acwNOTE. !ilcd3-18-77;cf.

!oc:tivelhirticth .Uythereafter(Register77,No. 12). 3.Amendmentfiled to-5-82;effcc:tivethinicdld.tythcrcUu:r**~;in=r**82.No.

41). 4.Editorialoom:ction.filed**S--7~4;**effectiverhi.nicthd.ty**tbe=fu:r~gisu:r**84,

No.l9). § 91011. Submissions ofConfidential Data.

MYpersonsubmitting tothestateboardanyrecords containingdata cbimedtobe

..tradesecret"orotherwiseexemptfromdisclosureunder GovcmmcntCodeSection6254or6254.7orunderotherapplicableprovisionsoflawshall.atthetimeofsubmission.identifyinwritingthepor· tioasoftherecordscontainingsuchdataas ..coafidcntial"andsh:illprovide the name, address and telephone !lWl1bcrofthe individual to be coa.tactcd ifthe sta.tcboardreceives arequest fordisclosure oforseeks todisclosethedataclaimedtobecoafidcntial.Emissiondatashallnotbe identifiedasconfidential.Thestateboa.."Ci shallnotdisclosedataidentified asconfidential.exceptin&CGotdmce with therequirements ofthis subchapterorSection39660(e)ofthe Health andSafetyCode. · NoTE: Authoritycited:

### scc:tiOas39600and**39~**1.He:lthandSafcryCodc.Refer· cnce:Scc:tioas39660,39701,41500,41511•.c1s12and

### mos.Hwcha.ndSzfecy Code: Scc:tioas 6253, 6254and 6254.7,OovcnuncntCode:/ltZtllral**Rut~urces** DefenseCumcilT.EP!.. 489F.2d390(Sth Clr. 1974) (6 ERC 1248);**llt~rrhem Cdift~mi.tiPt~IU:~PractU:a** Praj«tv.Crczit(l979)90Cal.App.Jd ll6; Uribt:v. Hawk(1971) 19Cd.App.3d 194. HisTORY 1.Newscc:Uon filed 1 0-5-82;cffcctiTeihinicthd.aytherc=ftcr(Rqisu:r82.No. 41).Fochisr.ocyoCCormcrscc:tioa.sec: Rcgistcr73,No. 39. 2.Amcadmcntfiled7-lo-34;cffcctiTethirtieth.UythcrcUu:r(R.cgistcr84.No.

28).



### Article 3. Inspection of Public Records § 91020. Disclosure Polley. HisTORY 1.Rcpca1c:rfilcd to-5-32;effoc:tivethirtiethci.sythcn:::litcr(Regisu:r82.No.41)• § 91021. Disclosure Procedure. Nom Auchoritycited: Scc:tion 39601.Hwthmel Safetyaxle:. Reference:Sec:· tiocu:**625~257,** GovcmmcntCode• fiJSTORY l.Amendmento(subsections(c)and(d){J) filed9-28-73;dfcctivethirtic:VI dsy

thcn:aftcr(R.cpsu:r73, No.J9).

., a--...1--

..... -- NI'\'M= r.t...t**'\-1&-77~ df~tive**  th.irticth d.tv th=ftc:r 

### D- 13 

# ITiUc 17 AirResources Board •§ 91100 f 91022. Dlsclosuro ofConflden**U~l** Dab.

(a)Thissection sh:ill applyto all cbu in the custodyofthe suteboard (1)designaccd '"trade secret"priorto the adoption ofthis subchapter, (2)coasidercdbythestateboardorid.cntificdbythe personwhosub· mitccdthedata as confidentialpursua.at to this subchapter,or

(3)receivedfrom afcdcn.l,stateorlocalagency,includingan airpol· lutioncoattoldistrict, with aconfidentialdaisnation,subjecttothe fol· lowingexceptioas:

.

(A)Exceptforthetime limits**specif~<::illy**providedinsubsection (b). oalysubsectioas(c)and(d)ofthis sectionshallapplytoinformationsubmittedpursuant toHealth and SafetyCode Scctioa39660(e).

(B)Appropriateportioasofan**appli~oa**forapproval.accreditation, orcettif1C&tionofa.motorvehicleemissioaconttoldeviceorsystemsh:ill bekepteoafidential':'Otilsuchtime astheapproval.accreditation,orcer· tificatioaisgranted.atwhichtimetheapplication(exceptfortradesecret data)shallbecomea.publicrecord.exceptthatestimateSofsalesvolume ofnewmodelvehiclescontainedinanapplicationshallbekeptconfidentialforthemodelyeu.andthenshallbecomepublicrecotds. Ifanappli· cati011 is denied,itshallcontinue tobe confidentialbutshallbesubject tothe provisioas ofthis section.

(C)Ifdisclosureofdataobtained afterAugust9. 1984from.astateor localagencysubjecttotheprovisionsofthePublicRecotdsActissoughc. thestateboardshallrequestthattheagencywhichprovidedthe datadetctminewhetheritisconftdential.Thestateboardshallrequestthatitbe notifiedofthe agency'sdetermination withintendays.Thestateboud shallnotreleasethe data ifthe agency determines thatitis confidential and sonotifiathe stateboard; provided,however, thatthe datamaybe releasedwith the consentofthe person who submitted itto the agency from whichitwas obtainedbythe stateboard.

(b)U poareceiptofarequestfromamemberofthepublicthatthestate boarddisclosedata.claimedtobeconfidentialorifthe statebouditself seeks todisclose such data., the state board shall infocn the individual designatedpuaumttoSecti01191011bytelephone andbymailthatdisclosure ofthe data.is sought.The pers011 claiming confidentialitysb:ill ruewiththe stateboarddocumentation insupportoftheclaimofcoafidcntiaiity.Thedocumentationmustbereceivedwithinfive(S)daysfrom thedar.coftheteleph011econtactorofreceiptofthemailednotice,whicheverfustoccurs.Inthecaseofinfocma.tionsubmiaedpursuanttoHealth andSafetyCodeSection39660( e),thedocumentationmustbereceived· within30daysofthedatenoticewasmailedpuiSUanttothatsection.The dea.dlinesforfil.ingthedocumentationmaybeextendedbythestateboud upoaashowingofgoodcausemadewithinthedeadlinespecifiedforreceiptofthedocumcnutioa. (c)Thedocumenwioa.submittedinsupportoftheclaimofconfidentialityshallincludethefollowing infocma.tion:

(1)the statUtocyprovision(s)underwhichtheclaimofconfidentiality is asserted:

(2)aspecificdescriptionofthecbtaclaimedtobeentidedtocoafidential treatment:

(3)the periodoftime-forwhich confidentialtreatmentis requested: (4)theextenttowhichthedataha.s beendisclosedtoothersandwhetherits confidentialityhasbeenmaintainedorits release restricted: (S)confidentialitydetetminalions. ifmy,m:ldebyotherpublic agencies as toall orpanofthe datamd:r. copyofmysuch detetmin:r.tioas, ifav:illable; and

(6) whetheritis assertedthatthe datais used to fabric:r.te, produce.or compoundm article oftr.Jdc ortoprovide :r. service andthat the disclosureofthe dat:r. wouldresultinharmfuleffectsonthe person'scompetitiveposition.and. ifso.thenarure andextentofsuchanticipatedh:umful effects. (d)Documentation,asspecifiedinsubsection(c).insupportofacl:r.im o(

coofidentialitymay besubmittedtotltest:r.tcbo:udpriortothetimeUis-



# . . . ofth:r.tdate iflhe state boarddcteroiincs that there arc unusu:11 circumst:mces .udcfmcd in Govcmmcnt Code Section 6256.1, review the request, ifany.and supportingdocumentation. ifreceivedwithinthe time limitsspecifiedinsubsection(b)above,includinganyextensiongranted. anddeterminewhetherthe dat:r.isentitledtoconfidentialtreatment pursuanttoGovemmcntCodeSection6254,6255 or6254.7orotherapplicableprovisions oflaw and shall either: (1)declinetodisclosethedataand. ifarequestw.ureceived,provide to the person malcing the request and to the person claiming the data is confidential:r.pstificationforthedeterminationpursuanttoGovemment CodeSection6255; or

(2)provide writtennotice tothepersonclaimingthe dataisconfidentialand. ifarequestwas received, tothe personrequestingthe datathat ithasdeterminedthatthedatais subjecttodisclosure,thatitproposesto disclosethe da1:l,andthatthedatashallbereleased21 days afterreceipt ofthenoticebytliepersonclaimingconfidentiality,unlessthestatebaud isrestrainedfromsodoingbyacourtofcompetentjurisdiction.Thestate boardshallreleasethedatainaccotdaacewiththeterms.ofthenoticeunless

### s0restrained.

(f)Shouldjudicialreviewbesoughtofadeterminationissuedinaccordancewithsubsection(e),eitherthepersoarequestingdata.ortheperson claimingconfidentiality,as appropriate,maybemade apartyto the litigationtojustifythe determ.inatioa. NoT£: Authorityciced: Section 3960I,Hc.Uth and SafetyCode.R.efett:nc:::: Sections62.53,62.54,62.54.7,6255,62.56,6256.1,6258and6259,Govc:mncntCode. Hls'TORY

. 1. A.mcudmcnt ofsubsections (a) and (b) filed 9-28-73; effective lhirtict.b «Uy

IIJc:r=.ftcr(Rqista73,No.39). 2.Amendment and newNOTE filed 3-18-77;effective thirtieth daythc:rcmer

(R.egistcr77,No. 12). 3.Amendme:ltfiL-d 1**o-~2;** effectivethirtiethdaythcremcr{R.t:gist= 82.No.

41). 4.**&fitarizl~on**ofsab=:tioo(a)flled5-7-84;c!!cctivetbirtiedl«Uythere·

alter{R.t:gistcr84, No. 19). S. }.mcndmcotfiled 7-10-84;effectivethirtieth«Uythere:fter{RI:gista"84,No.

28). 

### Subchapter5. Emission Data, Sampling, and Credentials for Entry Article 1. Determination of Emissions f 91100. Emission Dataand Sampling Access.

TheExecutiveOfficeroftheAirResources Board(StateBoard)orhis orhenuthorizedrepresentativemay,upoareasonablewrittennotice,require the owneroroperatorofany substance, anicle, machine. equipment.orotherconnivance,theusc ofwhich maycausethe issuance of aircontaminants,ortheuseofwhichmayeliminate,reduceorcoatrolthe issuance ofaircontaminants,to:

(a)ProvidetheStateBoardwithdescriptionsofb.uicequipment.conttolequipmentand r:lli:;S ofemissions.Where this infocnationdoes not providesufficientdatafortheStateBoardtocarryoutthepurposesofDi· vision26ofthe Health andSafetyCode.orwhere such info!Illationis in question. the Executive Officerorhis orher authorized representative mayn:quirc suchotheradditionalinformation a.s maybe nccess:r.ry. includingprocess and production data. techniques and nowdiagr.uns.

· (b)Provide samplingplatforms. samplingpons..md**m~** ofaccess to samplinglocations.

(c) Provide and maintain samplingmdmoa.itoring appar.1rus to mc:tsurcemissionsoraircont:un.inants when the E:tccutiveOfficerorhis or berauthorir.cdn:prcsrotativeh.udeterminedtbatsuchappar.1rusis "v:r.il

### September 1996 D- 14 

# I

### Appendix E Estimation ofGenericAutomotive CoatingFormulation Generic coating formulations were calculated for each coating type (e.g., clearcoats) for each automotive coatings manufacturer. The generic coating formulations representaverage air taxies composition for.eachcoatingtype. The generic coating formulations were calculated based on specific substance compositions for eachcoating product within a coatingtype and weighted based oneach manufacturerspercentage ofsales from eachcoating product. They therefore represent sales-weighted average compositions. Data were obtained from a survey of six automotive coatings manufacturers for formulation data for each oftheir automotive coating products (See survey letter, AppendixD). PPG'sdatawas not sales weighted, but was averaged using the statistical meanofthe datafor eachcategory. The sales weighted average compositions canbe used to estimate the weighted average uncontrolledemissions for thereadyto sprayformulation for each substance inunits ofpounds percoating type. Forexample,to estimate the toluene emissions from the 

### Ubreakem Wefixem Body Shop using 

### Paint The World's clearcoats, first obtainthe numberofgallons ofclearcoats that 

### Ubreakem Wefzxem BodyShop used 

### in 1995. From the generic formulation table for clearcoats ofthe

### Paint The World, obtaintheweighed average substance compositionfor toluene. Multiplythe numberofgallons ofclearcoats sprayedbythe weighted average substance compositionfor toluene (lb pergallon)to obtainthe toluene emissions inpounds (See example below).
Example: PR= The number ofgallons ofclearcoats = 1 00 gallons/year WASCtoluene =The weighted average substancecomposition factor= 0.50 lb/gallon Etoluene = PR X

### WASCtoluene = 100 gallon/yearx 0.50 lb/gallon =50 lb/year

MANUFACTURER : 

### PAINT TIIE 

### WORLD CATEGORY: Clearcoats 

### YEAR: 1995 TOXlc 10 (CAS) INGREDIENTS 

### 100414 Etllylbenzene 

### 107982 Propylene Glycol Methyl E!her 

### 108101 Methyl Isobutyl Ketene 

### 108656 Propylene Glycol Monomethyl E!herAcetate 

### 108883 Toluene 

### 112072 Etl'lylene Glycol Monobutyl E!herAcet:rte 

### 67561 MethylAlcohol 

### 67630 IsopropylAlcohol 

### 67641 Acetone 

### 78933 Methyl Etl'lyl Ketene 

### September 1996 E- 1 VVt. Ave (lbJgal) 0.32 

### 0.04 0.21 0.89 0.38 0.15 0.18 0.80 1.26 0.26 

# IManufacturer : Dupont Appendix E Category : PretreatmentWash Primers Year: 1995 Chromium Formulation Toxic 10 (CAS) Ingredients 67561 Methyl Alcohol 67630 Isopropyl Alcohol 67641 Acetone 108101 Methyl Isobutyl Ketone 108656 Propylene Glycol Monomethyl EtherAcetate 108883 Toluene 13530659 Zinc Chromate

Manufacturer : Dupont Category : Metal Treatments Year: 1995 Wt. Ave (lb/gal) 0.13 0.63 1.07 0.13 0.38 0.57 0.06

Toxic 10 (CAS) Ingredients Wt. Ave (lb/gal) 67630 IsopropylAlcohol 3.33 111762 Ethylene Glycol Monobutyl Ether 0.59

Appendix E Manufacturer : Dupont Category : Precoat No Chromium Formulation Year: 1995 Toxic ID (CAS) Ingredients 67561 Methyl Alcohol 67630 Isopropyl Alcohol 67641 Acetone 78933 Methyl Ethyl Ketone 107982 Propylene Glycol Methyl Ether 108101 Methyl Isobutyl Ketone 108656 Propylene Glycol Monomethyl EtherAcetate 108883 Toluene 112072 Ethylene Glycol Monobutyl EtherAcetate



### September 1 996 E-2 Wt. Ave (lb/gal) 0.10 0.47 0.37 0.52 0.16 0.21 0.21 0.63 0.10 

# IManufacturer : Dupont Category : Precoat Appendix E Chromium Formulation Year: 1995 Toxic ID (CAS) Ingredients 

### Wt. Ave (lb/gal) 67630 IsopropylAlcohol 67641 Acetone 107982 Propylene Glycol Methyl Ether 108883 Toluene 1314132 Zinc Oxide 1330207 Xylene 13530659 Zinc Chromate

Manufacturer: Dupont Category : Primer Surfacer Year: 1995 Appendix E 0.37 0.10 0.63 0.26 0.10 2.35 0.58

No Lead No Chromium Formulation Toxic ID (CAS) Ingredients 78933 Methyl Ethyl Ketone 112072 Ethylene Glycol Monobutyl EtherAcetate 1330207 Xylene 7440666 Zinc MolybdateAnd Zinc Oxide

Manufacturer : Dupont Category : Primer-Sealers Year: 1995 Appendix E Lead Formulation
Toxic ID (CAS) Ingredients 1314132 Zinc Oxide 1330207 Xylene 61790145 Lead Napthenate

Appendix E 

### Wt Ave (lb/gal) 0.13 0.10 0.08 0.05

Wt. Ave (lb/gal). 0.36 1.62 0.04

Manufacturer : Dupont Category: Primer-Sealers Year: 1995 No Lead or Chromium Formulation
Toxic ID (CAS) Ingredients 

## I Wt. Ave (lb/gal). 67561 Methyl Alcohol 0.23 67630 Isopropyl Alcohol 0.55 67641 Acetone 0.96 78933 Methyl Ethyl Ketone 0.35 108656 Propylene Glycol Monomethyl EtherAcetate 0.12 108883 Toluene 1.16



### September 1 996 

### E- 3Manufacturer : Dupont Appendix E Category : Single Stage Topcoats Year: 1995 No Lead No Chromium Formulation Toxic ID (CAS) Ingredients Wt Ave (lb/gal) 67630 Isopropyl Alcohol 0.23 67641 Acetone 0.10 78933 Methyl Ethyl Ketone 0.11 108883 Toluene 0.38 112072 Ethylene Glycol Monobutyl EtherAcetate 0.10 1330207 Xylene 0.74

Appendix E Manufacturer : Dupont Category: Single StageTopcoats Year: 1995 Lead & Chromium Formulation Toxic 10 (CAS) Ingredients Wt Ave (lb/gal) 78933 Methyl Ethyl Ketone 0.17 108656 Propylene Glycol Monomethyl EtherAcetate 0.21 112072 Ethylene Glycol Monobutyl EtherAcetate 0.00 1330207 Xylene 0.25 12656858 Lead Chromate Mglybdate 0.36 18454121 Lead Chromate 0.42

Appendix E Manufacturer : Dupont Category : MultistageTopcoats Year: 1995 No Lead No Chromium Formulation Toxic ID (CAS) Ingredients wtAve (lb/gal) 67630 Isopropyl Alcohol 0.32 67641 Acetone 0.65 78933 Methyl Ethyl Ketone 0.21 108101 Methyol Isobutyl Ketone 0.18 108656 Propylene Glycol Monomethyl EtherAcetate 0.95 108883 Toluene 0.66 112072 Ethylene Glycol Monobutyl EtherAcetate 0.12 1330207 Xylene 0.68



### September 1996 E-4 

# IManufacturer : Dupont Category : Multistage Topcoats Year: 1995 Lead & Chromium Formulation
Toxic ID (CAS)i Ingredients Wt. Ave (lb/gal) 67630 Isopropyl Alcohol 0.29 67641 Acetone 0.43 78933 Methyl Ethyl Ketone 0.20 108101 Methyl Isobutyl Ketone 0.55 108656 Propylene Glycol Monomethyl EtherAcetate 0.26 108883 Toluene 0.37 112072 Ethylene Glycol Monobutyl EtherAcetate 0.25 1330207 Xylene 0.36 12656858 Lead Chromate Molybdate 0.64 18454121 Lead Chromate 0.20 61790145 Lead Napthenate 0.00

Appendix E Manufacturer : Dupont Category : Clearcoats Year: 1995 No Lead No Chromium Formulation Toxic ID (CAS) Ingredients 67561 Methyl Alcohol 67630 Isopropyl Alcohol 67641 Acetone 78933 Methyl Ethyl Ketone 100414 Ethylbenzene 107982 Propylene Glycol Methyl Ether 108101 Methyl Isobutyl Ketone 108656 Propylene Glycol Monomethyl EtherAcetate 108883 Toluene 112072 Ethylene Glycol Monobutyl EtherAcetate 1330207
.. Xylene

Manufacturer : Dupont Category : Solvent Cleaners Year: 1995 Wt. Ave (lb/gal) 0.14 0.60 0.95 0.26 0.30 0.09 0.22 0.78 0.34 0.15 0.70

Toxic ID (CAS)

### I Ingredients Wt. Ave (lb/gal) 676301 Isopropyl Alcohol 67641 Acetone 108883 Toluene

Manufacturer : Dupont Category : Waterborne Cleaners Year: 1995 Toxic ID (CAS) Ingredients 0.59 1.98 0.95

Aliphatic Hydrocarbon/Aliphatic Ester/Surfactant Aliphatic Solvent Mixture Water 

### September 1996 

### E-5 Wt. Ave (lb/gal) 0.02 0.04 0.49 

# IManufacturer : Nason Category : PretreatmentWash Primer Year: 1995 Toxic 10 (CAS) Ingredient 78933 Methyl Ethyl Ketone 108101 Methyl Isobutyl Ketone 13530659 Zinc Chromate

Manufacturer : Nason Category : Precoats Year: 1995 Toxic 10 (CAS) Ingredient 67630 Isopropyl Alcohol 67641 Acetone 78933 Methyl Ethyl Ketone 108883 1330207

Manufacturer : Nason Category : Primers Year: 1995 Toxic Toluene Xylene

Ingredient Appendix E

Wt. Ave (lb/gal) 1.02 0.42 0.36

Appendix E

Wt. Ave (lb/gal) .14 .29 .58 .38 .19

Appendix E

Wt. Ave (lb/gal) 67630 Isopropyl Alcohol 0.14 78933 Methyl Ethyl Ketone 107982 Propylene Glycol Methyl Ether 108656 108883 Propylene Glycol Monomethyl EtherAcetate 1330207

Manufacturer : Nason Category : Sealers Year: 1995 Toluene Xylene

Appendix E 0.16 0.58 0.24 0.20 0.10

Toxic 10 (CAS) Ingredient Wt. Ave (lb/gal) 67630 Isopropyl Alcohol 0.21 108101 Methyl Isobutyl Ketone 0.39 108883 Toluene 0.26 1330207 Xylene 0.10



### September 1 996 

### E-6 

# IManufacturer : Nason Category : Single Stage Topcoats Year: 1995 Toxic ID (CAS) Ingredient Appendix E

67630 Isopropyl Alcohol 67641 Acetone 78933 Methyl Ethyl Ketone 108656 Propylene Glycol Monomethyl EtherAcetate 108883 Toluene 112072 Ethylene Glycol Monobutyl EtherAcetate 1330207 Xylene

Manufacturer : Nason Category : Clear Year: 1995 Appendix E

Toxic ID (CAS) Ingredient 108101

. Methyl Isobutyl Ketone 108656 Propylene Glycol Monomethyl EtherAcetate 1330207 Xylene

September 1996 

### E-7 Wt. Ave (lb/gal) 0.10 0.13 0.07 0.07 0.14 0.10 0.08

wt. Ave (lb/gal) 0.66 0.22 0.22Manufacturer : Sherwin Williams Category : Pretreatment Toxic 10 (CAS) 

## I Ingredient 111762 2 butoxyethanol 67630 2 propanol 111762 2butoxyethanol 112072 2butoxyethyl acetate 67641 acetone 100414 ethylbenzene 67561 methanol 78933 methyl ethyl ketone 108101 methyl isobutyl ketone 108883 toluene 7440666 zinc compounds

Manufacturer : Sherwin Williams Category : Precoat Appendix E Chromium Formulation Toxic 10 (CAS) Ingredient 

### wt. Ave (lb/gal) 112072 2 butoxyethyl acetate 18540299 chromium compounds

100414 ethylbenzene 78933 methyl ethyl ketone 108101 methyl isobutyl ketone 7789062 strontium chromate 1330207 xylene

Manufacturer: Sherwin Wilfl8ms Category : Precoat 0.10 0.05 0.14 0.14 0.48 0.24 0.72

Appendix E
Toxic 10 (CAS) Ingredient 

### wt. Ave (lb/gal) 108656 1 methoxy 2 propanol acetate 111762 2 butoxyettianol 67630 2 propanol 100414 ethylbenzene 78933 methyl ethyl ketone 108101 methyl isobutyl ketone 108883 toluene 1330207 xylene 7440666 zinc compounds

Manufacturer : Sherwin Williams Category : Primer Sealers Toxic 10 (CAS) Ingredient 0.10 0.10 0.24 0.08 0.19 0.36 0.91 0.43 0.29

108656 1 methoxy 2 propanol acetate 112072 2 butoxyethyl acetate 67630 2-propanol 67641 acetone 18540299 chromium compounds

100414 ethylbenzene 78933 methyl ethyl ketone 108101 methyl isobutyl ketone 108883 toluene 7440666 zinc compounds 

### September 1996 

### E-8 : 

# I

Wt. Ave (lb/gal) 0.32 1.79 0.29 0.06 0.24 0.35 0.06 0.42 1.23 0.27 0.13

Wt. Ave (lb/gal)

## I 0.03 0.03 0.48 0.18 0.01 0.32 0.13 0.36 1.72 0.03Manufacturer: Sherwin Williams Category : Primer Surfacer Toxic 10 (CAS) Ingredient 108656 1 methoxy 2 propanol acetate 67630 2 propanol 67641 acetone 100414 ethylbenzene 67561 methanol 108101 methyl isobutyl ketone 100425 styrene 108883 toluene

Appendix E Wt. Ave (lb/gal) 0.05 0.30 0.47 0.05 0.12 0.49 0.00 2.34

Manufacturer : Sherwin Williams Category : ColorCoats Lead & Chromium Formulation Toxic 10 (CAS). Ingredient Wl Ave (lb/gal) 108656 1-methoxy-2-propanolacetate 0.14 2 butoxyethanol 0.07 111762 112072 2-butoxyethyl acetate 67630 2-propanol 67641 acetone 18540299 chromiumcompounds

100414 ethylbenzene

1128 lead compounds 67561 methanol 78933 methyl ethyl ketone 108101 methyl isobutyl ketone 108883 toluene 1330207 xylene

Manufacturer : Sherwin Williams Category : Color Coats Toxic 10 (CAS) 

### I Ingredient 1330207 xylene

Manufacturer : Sherwin Williams Category : Clearcoats Toxic 10 (CAS). Ingredient 108656 1-methoxy-2-propanol acetate 112072 2-butoxyethyl acetate 67630 2-propanol 67641 acetone 100414 ethylbenzene 67561 methanol 78933 methyl ethyl ketone 108101 methyl isobutyl ketone 108883 toluene



### September I996 0.23 0.51 0.46 0.42 0.28 0.69 0.17 1.11 ' 0.50 0.86 1.34 '

Appendix E
Wt. Ave (lb/gal) 0.07

Wt. Ave. (lb/gal) 0.19 0.52 0.58 0.71 0.16 0.13 0.80 0.38 1.13



### E-9 

# IManufacturer : Akzo Category : Surface Cleaners

Toxic 

### II Ingredient 67641 Acetone 100414 Ethyl benzene 108101 Methyl isobutyl ketone {Hexane} 108883 Toluene 1330207 Xylene

Manufacturer : Akzo Category: Primer Surfacer

Toxic 

## I Ingredient 100414 Ethyl benzene 107982 Propylene glycol monomethyl ether 108101 Methyl isobutyl ketone {Hexane} 108656 Propylene glycol monomethyl ether acetate 111762 Ethylene glycol monobutyl ether 112072 2-butoxyethyl acetate 1330207 Xylene

Manufacturer : Akzo Category : Single Stage Topcoat

Toxic 

## I Ingredient 100414 Ethyl benzene 108656 Propylene glycol monomethyl ether acetate 1330207 Xylene



### Formulationswithout lead orChromium Manufacturer : Akzo Category : Lacquer



# .

Toxic 

## I Ingredient 67630 Isopropyl alcohol 67641 Acetone 108656 Propylene glycol monomethyl ether acetate 108883 Toluene 112072 2-butoxyethyl acetate 1330207 Xylene



### September 1996 E-10 

# I

Weighted Ave. 1.8960 .3899 3.7620 3.1050 1.6621

Weighted Ave. .0167 .4204 .7536 .1103 .0623 .0100 .4769

Weighted Ave. .0018 .0253 .0762



# . Weighted Ave. .1698 .3000 .1164 1.4394 .0690 .7092Chromium Compounds Manufacturer :Akzo Category : Specialty Coating TOXIC Ingredient 111762 Ethylene glycol monobutyl ether 1308389 chromium oxide

Formulations without lead orChromium Manufacturer : Akzo 

### APPENDIX E

, Wt. Ave. (lb/gal) .0083 .0092

Category : Specialty Coating 

### AimiDIX E

Toxic Ingredient Weighted Ave. 1330207 Xylene

. 1.1491 7440439 Cadmium .0006 7440666 Zinc .0014

Manufacturer: Akzo Category : Specialty Coating

Toxic Ingredient Weighted Ave. 67630 Isopropyl alcohol .1524 67641 Acetone 1.0406 100414 Ethyl benzene .4332 107982 Propylene glycol monomethyl ether 1.2990 108656 Propylene glycol monomethyl ether acetate .8559 108883 Toluene .5155 111762 Ethylene glycol monobutyl ether .0396 112072 2-butoxyethyl acetate 1.0860



### September 1996 E- 11 

## ICompany 

### Name: PPG Category : PRIMER SEALER Toxic ld Ingredient



### 67630 ISOPROPYLALCOHOL 

### 67641 ACETONE 

### 78933 METHYL ETHYL KETONE 

### 107982 PROPYLENE GLYCOL MONOMETHYL ETHER 

### 108101 METHYL ISOBUTYL KETONE 

### 108883 TOLUENE 

### 111762 ETHYLENE GLYCOL MONOBUTYL ETHER 

### 1330207 XYLENE

Company name: PPG Category : DTM PRIMER Toxic ld Ingredient



### 67630 ISOPROPYLALCOHOL 

### 67641 ACETONE 

### 107982 PROPYLENE GLYCOL MONOMETHYL ETHER 

### 108101 METHYL ISOBUTYL KETONE 

### 108883 TOLUENE 

### 111762 ETHYLENE GLYCOL MONOBUTYL ETHER 

### 1330207 METHYL ETHYL KETONE 

### 1330207 XYLENE 

### 18540299 CHROMIUM VI

Category : PRIMER SURFACER Toxic ld

.Ingredient



### 67630 ISOPROPYL ALCOHOL 

### 67641 ACETONE 

### 78933 METHYL ETHYL KETONE 

### 107982 PROPYLENE GLYCOL MONOMETHYL ETHER 

### 108101 METHYL ISOBUTYL KETONE 

### 108883 TOLUENE 

### 111762 ETHYLENE GLYCOL MONOBUTYL ETHER 

### 1330207 XYLENE

Company name: PPG Category : BASE COAT Toxic ld Ingredient 

### 67630 ISOPROPYLALCOHOL 

### 67641 ACETONE 

### 78933 METHYL ETHYL KETONE '·



### 107982 PROPYLENE GLYCOL MONOMETHYL ETHER 

### 108101 METHYL ISOBUTYL KETONE 

### 108883 TOLUENE 

### 111762 ETHYLENE GLYCOL MONOBUTYL ETHER 

### 1330207 XYLENE 

### 7439921 LEAD 

### 18540299 CHROMIUM VI



### September 1996 E- 12 

# I

Ave (lb/gal) 

### 0.00 0.19 0.19 0.22 0.54 0.19 0.01 0.53

Ave (lb/gal) 

### 0.10 0.03 0.43 0.45 0.63 0.21 0.26 0.24 0.00

Ave (lb/gal) 

### 0.01 0.14 0.12 0.10 0.26 0.20 0.01 0.59

Ave (lb/gal) 

### 0.01 0.20 0.44 0.77 0.17 0.28 0.01 0.31 0.08 0.02Company Name: PPG**~ategory:** SINGLE STAGE TOPCOAT Toxic ld Ingredient 

### 67641 ACETONE 

### 78933 METHYL ETHYL KETONE 

### 107982 PROPYLENE GLYCOL MONOMETHYL ETHER 

### 108101 METHYL ISOBUTYL KETONE 

### 108883 TOLUENE 

### 111762 ETHYLENE GLYCOL MONOBUTYL ETHER 

### 1330207 XYLENE 

### 7439921 LEAD 

### 18540299 CHROMIUM VI

Company name : PPG Category: SPECIALTY COATING t. Toxic ld Ingredient



### 67630 ISOPROPYLALCOHOL 

### 67641 ACETONE 

### 78933 METHYL ETHYL KETONE 

### 107982 PROPYLENE GLYCOL MONOMETHYL ETHER 

### 108101 METHYL ISOBUTYL KETONE 

### 108883 TOLUENE 

### 111762 ETHYLENE GLYCOL MONOBUTYL ETHER 

### 1330207 XYLENE 

### 18540299 CHROMIUMVI

Category : CLEAR COAT Toxic ld Ingredient 

### 78933 METHYL ETHYL KETONE 

### 107982 PROPYLENE GLYCOL MONOMETHYL ETHER 

### 108101 METHYL ISOBUTYL KETONE 

### 108883 TOLUENE 

### 1330207 XYLENE

Company name : PPG Category : REDUCER BLENDS Toxic ld Ingredient 

### 67641 ACETONE 

### 78933 METHYL ETHYL KETONE 

### 107982 PROPYLENE GLYCOL MONOMETHYL ETHER 

### 108101 METHYL ISOBUTYL KETONE 

### 108101 MIBK 

### 108883 TOLUENE 

### 111762 ETHYLENE GLYCOL MONOBUTYL ETHER 

### 1330207 XYLENE 

### 1330207 XYLENES



### September 1996 

### E- 13 Ave (lb/gal) 

### 0.03 0.31 0.33 .0.03 0.16 0.02 1.05 0.21 0.06

Ave (lb/gal) 

### 0.26 0.35 0.55 0.40 0.06 1.09 0.03 1.38 0.01

Ave (lb/gal) 

### 0.27 0.28 0.09 0.21 1.05

:Ave (lb/gal) 

### 0.67 0.78 0.77 0.08 0.08 0.74 0.18 0.16 0.16Company name: PPG Category· REDUCER BLENDS Toxic ld Ingredient 

### 108101 METHYL ISOBUTYL KETONE 

### 108101 MIBK 

### 108883 TOLUENE 

### 111762 ETHYLENE GLYCOL MONOBUTYL ETHER 

### 1330207 XYLENE



### . 1330207 XYLENES

Category : SPECIALTY ADDITIVES Toxic ld Ingredient 

### 67630 ISOPROPYLALCOHOL 

### 67641 ACETONE 

### 78933 METHYL ETHYL KETONE 

### 108883 TOLUENE 

### 111762 ETHYLENE GLYCOLMONOBUTYL ETHER

Category: CLEANERS Toxic ld Ingredient



### 67630 ISOPROPYLALCOHOL 

### 67641 ACETONE 

### 107982 PROPYLENE GLYCOL MONOMETHYL ETHER 

### 108883 TOLUENE 

### 1330207 XYLENE



### September 1996 E--14 

# I

Ave (lb/gal) 

### 0.08 0.08 0.74 0.18 0.16 0.16

Ave (lb/gal) 

### 0.01 0.01 0.47 0.84 0.01

Ave (lb/gal) 

### 1.37 0.44 0.04 1.01 0.77Manufacturer : BASF Category: Basecoat

Toxic· 

### Ingredient 67561 Methanol 67630 Isopropyl alcohol 67641 Acetone 78933 Methyl ethyl ketone {2-Butanone} 100414 Ethyl benzene 107982 Propylene glycol monomethyl ether 108101 Methyl isobutyl ketone {Hexane} 108656 Propylene glycol monomethyl ether acetate 108883 Toluene 111762 Ethylene glycol monobutyl ether 112072 2-butoxyethyl acetate 1330207 Xylene 7440020 Nickel 7440508 Copper Weighted Ave. 0.0000 .2598 .3051 .0739 .1296 0.0000 .4452 .4076 .9347 0.0000 .1394 .6795 0.0000 .0028

Manufacturer : BASF Category : Basecoat No Lead orChromium Formulation Toxic ld INGREDIENTS

67641 ACETONE 1328536 COPPER 7440508 Copper (compound) 100414 Ethyl Benzene 112072 Ethylene Glycol Butyl Eth. Act 67630 ISOPROPANOL 108101 METHYL ISOBUTYL KETONE 67561 Methanol 78933 Methyl Ethyl Ketone 108656 Propylene Glycol Methyl Eth Ac 108883 Toluene 1330207 XYLENE

Manufacturer : BASF Category : Basecoat Chromium Formulation Toxic ld INGREDIENTS

67641 ACETONE 7440473 Chromium 

### III 100414 Ethyl Benzene 112072 Ethylene Glycol Butyl Eth. Act 111762 Ethylene Glycol Butyl Ether 67630 ISOPROPANOL 78933 Methyl Ethyl Ketone 108656 Propylene Glycol Methyl Eth Ac 108883 Toluene 1330207 XYLENE 

### September 1996 E-15 Wt. Ave (lb.gal) 0.4037 0.0585 0.0028 0.1247 0.1326 0.3050 0.3973 0.0002 0.1557 0.4379 1.1010 0.6473

Wt. Ave (lb.gat) 0.2497 0.0005 0.1120 0.2342 0.1967 0.3995 0.0033 0.2392 0.7656 0.6200 

# IManufacturer : BASF Category : Pretreatment

Toxic 67561 Methanol 67630 Isopropyl alcohol 100414 Ethyl benzene Ingredient

108101 Methyl isobutyl ketone {Hexane} 108656 Propylene glycol monomethyl etheracetate 111762 Ethylene glycol monobutyl ether 112072 2-butoxyethyl acetate 1314132 Zinc oxide 1330207 Xylene

Manufacturer : BASF Category : Primer/Sealer

Toxic Ing_redient 67630 Isopropyl alcohol 78933 Methyl ethyl ketone {2-Butanone} 100414 Ethyl benzene 107982 Propylene glycol monomethyl ether 108101 Methyl isobutyl ketone {Hexane} 108656 Propyleneglycol monomethyl etheracetate 108883 Toluene 112072 2-butoxyethyl acetate 1330207 Xylene



## . 7440666 Zinc

Fonnulationswithout Lead orChromium Manufacturer: BASF Category : Primer/Surfacer

Toxic Ingredient 67630 Isopropyl alcohol 67641 Acetone 78933 Methyl ethyl ketone {2-Butanone} 100414 Ethyl benzene 107982 Propylene glycol monomethyl ether 108101 Methyl isobutyl ketone {Hexane} 108656 Propylene glycol monomethyl ether acetate 108883 Toluene 111762 Ethylene glycol monobutyl ether 112072 2-butoxyethyl acetate 1330207 Xylene 

### September 1996 E-16 

# I

Weighted Ave. .0236 1.1911 .0549 .0050 .1197 .1104 .0276 .0561 .2651

Weighted Ave. .0046 .0222 .0956 .0024 .0050 .0437 .0897 .1050 .4696 .0042

APPENDIX E Weighted Ave. .0883 .9549 .0993 .0431 .0753 .0518 .0812 .4431 .0932 .0175 .1751Manufacturer : BASF CATEGORY: Single Stage Lead & Chromium Formulation Toxic ld INGREDIENTS Wt. Ave (lb.gal)

67630 ISOPROPANOL 0.7064 67641 ACETONE 0.5900 78933 Methyl Ethyl Ketone 0.2563 100414 Ethyl Benzene 0.0700 108656 Propylene Glycol Methyl Eth Ac 0.0969 108883 Toluene 1.5757 112072 Ethylene Glycol Butyl Eth. Act 0.0504 1328536 COPPER 0.0100 1330207 XYLENE 0.2978 7429905 ALUMINUM 0.0338 7440666 Zinc (compound) 0.0003 12656858 LEAD CHROMATE/MOLYBDATE 0.0329

Manufacturer : BASF CATEGORY : Single Stage No Lead No Chromium Formulation Toxic 10 INGREDIENTS 

### Wt. Ave (lb.gal) 100414 Ethyl Benzene 0.0322 108656 Propylene Glycol Methyl Eth Ac 0.0120 112072 Ethyfene Glycol Butyl Eth. Act 0.0328 1328536 COPPER 0.0013 1330207 XYLENE 0.1541

Formulations without Lead orChromium Manufacturer : BASF Category : Clearcoat APPENDIX E

Toxic Ingredient 67630 Isopropyl alcohol 67641 Acetone 78933 Methyl ethyl ketone {2-Butanone} 100414 Ethyl benzene 108656 Propylene glycol monomethyl ether acetate 108883 Toluene 112072 2-butoxyethyl acetate 1330207 Xylene



### September 1996 E-17 Weighted Ave. .8503 .5035 .2751 .0583 .4048 1.7550 .0814 .2788 

# I

## Appendix F - Bodyshop Survey Form September 1, 1996 Owner/Operator: company address city state zip SUBJECT: Requirement to Provide Coating and Solvent Usage for 1995 DearOwner/Operator: We seekyour assistanceto help us estimate toxic emissions from coating operations atyourbodyshop by completingthe enclosed survey. In 1987, the CaliforniaLegislaturepassed the AirToxics "Hot Spots" Act (Health and Safety Code (H&SC) Sect. 44630 et seq.). This law created a statewideprogram toestimatetoxic airemissions from businesses. TheDistrict must collect and processthis data. Theinformation you provide

### will beused to generate aprioritization score. If

### that scoreexceeds a minimumvalue, wewill complete a screening risk assessment to estimate potential health impacts due to the emissions from yourbusiness. Ifthe risk exceeds the level ofsignificance setby the District Board, you may berequired tonotifythe affected communityofthese potential health impacts. You may also be required to develop ariskreduction plan to reduce the riskfrom yourfacility belowthe level ofsignificance. ADistrictrepresentative will be available to assistyou in all steps ofthis process. The enclosed survey contains two pages. The first page requests general information aboutyourfacility andthetype ofbooth and sprayequipment used. The second page contains columns and rows whereyou enterinformation aboutthe volumes ofcoatings and solvents you sprayed orotherwiseemployed. For easierreporting, the coatings and solvents arebroken down into general categories. Notethat Sections 42303 and 40701(g) oftheH&SC authorize us to require you to promptlyprovide all ofthe information. Itis importantthatyou workwith theDistrictto help us develop your emissions inventory and risk assessment. You may also provideyourown emissions estimate and health riskassessmentusing more detailed information, if

### you choose. Please completethe enclosed survey and return it on orbefore October 1, 1996, to: YourLocal APCD 2588 Full Circle Hillendale, CA94666 Attn: Toxics Coordinator If



### you have any questions abouttheprogram orcompleting the survey, please call the toxics coordinator at (932) 322-7237 duringnormal business hours. Thankyou for yourcooperation. Respectfully,

I.M. Sorah, APCO enclosures

September 1996 

### F- 1DearOwner/Operator: INDUSTRY-WIDE TOXIC EMISSIONS INVENTORY SURVEY AUTO BODYSHOP COATING OPERATIONS EMISSION YEAR 1995

Werequestthatyou provide the following information, asauthorizedby H&SC sections42303 or4070I(g). Itwillbeusedtoestimate toxicemissionsfromyourbusiness andthe potentialhealth impact. Yourfull cooperation is appreciatedby accuratelycompletingthis form. Retwntheformby October 1, 1996. Ifyouhave any questions, contactthe toxics coordinatorat (932) 322-7237.

FACILITYINFORMATION FacilityName:

------------------------------- Date:

__ \

__ \

__ FacilityAddress:

------------------- City:

--------------------------- ZIP:

------- Phone:

--------------- Fac ID:

___ PTO:

--------- Contact:

----------------------- Title:

--------------- Distanceinfeetto nearest: residence:



## ----

Indicatethe types ofspray guns used, andestimate thevolume ofcoating sprayedforeachtype ofgun. Thetotal mustequal 100%. Indicatelocationswhere sprayingisperformed. Thetotalfor all locationsusedmustequal 1 00%. schooVday care: ___ _ hospital:

___ _ propertyline:

___ _ EQUIPMENTINFORMATION 

### 0 HVLP 

### 0 Conventional 

### 0 Other:

----- %used:

__ 

### 0 HVLP 

### 0 Conventional 

### 0 Other:

----- %used:

__ _ SprayBooth: Prep Station: Open Area: 

### 0yes 

### 0no 

### 0yes 

### 0no 

### 0yes 

### 0 no %used: %used: %used: TOTAL: TOTAL:

__

Buildingheight:

__ft width:

__ft length:

__ft HeatedBooth: 

### 0 yes 

### 0 no ExhaustTemperature:

____F" ExhaustStack: 

### 0yes 

### 0no Rain Cap: 

### 0yes 

### 0 no Direction theExhaustStackPoints: 

### 0 up 

### 0 sideways 

### 0 down ExhaustStack: HeightAbove Ground:

___ft Diameter:

____ft Other:

___ x___ BlowerCapacity:

----- cfin Typeofexhaustfilter: 

### 0 None 

### 0 WaterCurtain 

### 0 Paper 

### 0 Foam 

### 0 Fiberglass 

### 0 Other(specify): Filter/RemovalEfficiency:

_____% Attach manufacturer'sinformation sheetverifyingtheremovalorfalterefficiency. Maximumgallons sprayedin anyonehour:

___gaVhr Averagenumberofhoursyou actually .m!J!Yeachday:

___brs/day Numberofgallonsyou sprayoruse in an averageweek: solvent:

--------- coating:

---------- Averagenumberofdaysperyearthatyourshop paintscars: ___days/year

COATINGANDSOLVENTUSAGEINFORMATION Pleasecompletetheform onthebackofthis survey. Enterthebrandofcoatings andsolvents used. Ifmore than onebrandis used, filloutaseparateformforeachbrand. ReportthenumberofgallonsforALL VOC containingmaterialsused atyourfacilityforthe reportingyear. Youmayreducethe amountusedby the amount shippedoffsite (waste) byestimating the%ofeachcategorydisposed (1). Attachcopies ofhazardouswaste manifests verifying the volume shipped (2). Volumes 1and 2 shouldbethe same. Besureto includetheweightpercentofhexavalentchromium (chromates), ifany, foreach category. SeeMSDS orcheckwithyourdistributor.



### September 1996 

### F- 2 

# IBrandorManufacturer: Coatings:

-------------- Solvents:

------------- Total gallonsofall coatings used:

_________ (.A) Total gallonsofall solvents used:

_________ .(B) CategoryofSolventorCoating Chromate(*) Annual Hazardous Hazardous Annual Content Usage Waste Waste UsageLess (wt%) (%) (gallyr) Waste (gallyr) (gallyr) 

# I(EXAMPLE) PRIMER SEALER (**) 

## 1o.o32 1125 

# Is

PretreatmentWashPrimer Solvent-basedPrecoat WaterbornePrecoat Solvent-basedPrimer WaterbornePrimer Solvent-basedPrimerSurfacer Waterborne-PrimerSurfacer PrimerSealer SolidColorTopcoat Metallic/IridescentTopcoat SpecialtyCoating Basecoat Grotmdcoat Midcoat Clearcoat 

### LacquerPrimer Lacquer LacquerSolvent, VOC= lb/gal SurfacePrep Solvent, VOC= lb/gal Wax/GreaseRemover. VOC = lb/gal Thinners/Solvents, VOC= lb/gal Gun Cleaning Solvent, VOC = lb/gal Other: •VOC= lb/gal Other: ,VOC= lb/gal Total Gallons (donotincludeEXAMPLE): DistrictUse. gal(I) 

# --------------- gal(2) 

# ----------- (*) Carefullycheckmaterial safetydatasheets (MSDSs) orcallyourdistributorfor these values. Ifnochromates arefotmd, enter0. (**) Examplecalculation: 125 gallonstotal x5% = 125 x5/100 = 6 gallons to hazardous wasteoroff-siterecycle. 125 gallonstotal - 6 gallonswaste/recycle= 119 gallonsused (I) Thusum should be(A)+(B)from thetopofthis page. (2) Thb sum shouldequalthevolumeofmaterialshipped as hazardouswasteverified byyourmanifests. 

### September 

### 1996 

### F- 3 

# I

### TO: FROM: DATE: SUBJECT: 

## Appendix G - Fall Out Fraction AB TaskForce Chairman, ABTF September 19, 1995 Recommendations onFall OutFraction After reviewing the Rohr Fallout Fraction Test Report, it is reasonable to include a fall out fraction (FOF) in lieu ofa transfer efficiency for auto bodyshop operations that use spray booths. The Rohr FOF value averages 91% which includes a transfer efficiency of 75% using a Devilbiss HVLP gun. The booth stack flow rate was 21,185 ACFM with a cross-sectional flow rate within the fully-enclosed spray booth ofgreaterthan 100 ft/min. The booth was thoroughly cleaned priorto coating application. The spray gun was set at 5 psi, and the paint spray pattern limited to awidth of5 or 6 inches. The painter metthe minimum requirementsfor industrial standards andwas not atop ofthelinepainter. For spray operations outside of a booth, I do not believe that a FOF is appropriate. Although fall out does occur, the transferefficiency should bethe sole determining factor because of the additional wind effect which increases the probability of dispersing particulate material, not experienced in a spray booth. For a partially enclosed booth the transfer efficiency should also be used due to the uncertainty in determining the booth captureefficiency andthe increasedprobability ofwind dispersion, as mentionedbefore. For the following reasons, I recommend that the FOF be set at a lower value than the Rohr number. Instead of91%, I think an FOF closerto 80% for HVLP spray operations and SO% 

### for air assisted operations shouldbe suggested. The amount ofrebounding particulates is determined, in part, by the force ofthe coating application. In the Rohr study the HVLP gun was set at 5 psi. Fewbodyshops are that careful and often exceed that value. As a result, more particulates are launched into the air and the transfer efficiency, a major contributorto the FOF, is lowered. I would guess thatthe resulting transfer efficiency is closerto 65%, less than the 75% found in theRohr report. The Rohr booth was thoroughly cleaned before use to remove any background particulates. Generally, aproduction oreven small shop boothis sweptwith a shop broom andmaybe lightly hosed down with watertokeep the dust down. The averageboothis not thoroughly cleaned. This results in increased particulate fugitives from previous coating operations. Iwould estimatethisto reducetheFOF by about2%. The paintingtechnique was far more controlled intheRohr report than one would expect to find in a production shop and greater than that expected in an average bodyshop. The difference between the Rohr painter and one found in an average shop is probably not substantial but I would still suggest that the FOF is reduced by about 2% due to painter and painting technique differences. A Rohr painter is not paid based on the number of parts produced and abodyshop paintermaybeundermore pressuretogetthejob out. The stack volumetric flow for an average bodyshop is about 10,000 to 15,000 ACFM. This is less than thatused in the Rohrtest and could result in an increase in the FOF due to more time being allowed in the average bodyshop for the particulate material to drop out. Iwould guessthistobe about 1%.

September 1996 G-1 

# I

## Appendix H - Data Submittal to CARB The California Air Resources Board has created data fields and formats for districts to use in submitting the autobody shop emission inventory data to the California Air Resources Board's Air Taxies Emissions Data System. It is expected that most districts will collect data via spreadsheets. Attached is a list of data fields to be included in the
· industrywide emission data submittals (Attachment I). The data fields have

been kept to a minimum to avoid collecting unnecessary information. The inventory year, district, air basin, county code, SCC, PT units and SIC codes should be included in the heading of the spreadsheet. The rest of the data fields should be included in the body of the spreadsheet. For multicounty districts, the county code can be moved to the first column in the spreadsheet body. The Autobody Industrywide data formats can be standardized and also used for submitting other AB 2588 industrywide-type emissions data such as dry cleaning and gas station facilities. Attachment I also includes generic SIC/SCC codes that reflect the general operations of all the industrywide categories. : Attachment II is a mock-up of what the industrywide spreadsheet template should look like. CARB has developed a spreadsheet template for the districts' use in reporting these industrywide emissions and will provide a copy of the template to any district wanting to use it. The spreadsheet template can be provided in either Quattro Pro, Excell, or Lotus 1,2,3 format.



# DRAFT!

September 1996 H- 1 

# I

# .. Attachment I

Su9gested Data Ejelds To Include In Industrywide Inventories (To be included in the Heading of the Spreadsheet) Inventory Year District Code Air Basin Code County Code (include in spreadsheet body for multiple county districts) Faci1ity SIC 

## sec (include in spreadsheet body if multiple processes) Process Units Code (include in spreadsheet body if multiple processes)· (To be included in the Body of the Spreadsheet) County Code (unless included in header) Facility ID Facility Name Facility Address, City, Zip Code 

## sec (unless included in header) Process Description (optional) Annual Process Rate Process Units Code (unless included in header) Max Hourly Process Rate Toxic ID Toxic Name Emission Factor Annual Emissions (pounds per year) Hourly Max Emissions (for substances with acute effects only, lb/hr) Suggested •uenerjc• SCC Codes For Some E-I FaCilities Most likely**To~** 

### Covered By Industrywide Inventories
Faci 1 jty Class SIC Code 

# sec Code PI Code Process Units Gas Stations 5541 4-06-888-01 PT031 1000 Gals Throughput Autobody Shops 7532 4-02-016-99 PTUO Tons of Solvent In toatlng Dry Cleaners 7216 4-01-001-98 PT109 Tons Solvent Consumed Printing Shops 2759 4-05-888-01 PT105 Tons Product Fiberglass Mfg. 2221,3229 3-05-012-99 PT117 Tons Processed 3-08-007-99 PT105 Tons Product 

# nn**~**

# FT 1 

# hAr
September 1996 H-2 

# I{I') 

## ,g 0 

### 3 0"**~**



## ..... \0 \0 0\



### :I: I VJ Inv. Year District 1991 sc Faa. m FNama

1023 Aaron A. Aardvark 1904 Otto's Auto Paint

--- 

### Attachment II

Air Basin County SIC sec FPRU sc 16 7532 40201699 PTllO FAddress !'City PZip PRDesc PR MaxHrPR Toxic ToxNama 122 Maple Lane Anytown 91786 Car Paint 0.005 45 25321226 DiChloro Be 12 Industrial Pkwy City of Science 95819 Fume Hood 1.623 6 95501 1,2-DiCLBen

----

# IP>~~UI~!M£~W 

# !Dl£1r

# £**~Mlffi~~~1r** 

# 1f'(Q)**!R1~\Yl~~~(Q)~** I Emfact EMS HrMaxEMS 0.05 1200 634 2.0001 232 6231 335



# -

## Appendix I - Prioritization Procedures The procedure recommended by the task force to prioritize auto body shops is based on the Emissions and Potency Procedure outlined in the Air Toxics "Hot Spots" Program Facility Prioritization Guidelines, prepared by the California Air Pollution Control Officers**Ass~iation** 

### (CAPCOA), July 1990. These guidelines were developed by a committee comprised of representatives from Districts (including Ventura County), the California Air Resources Board (CARB), and the Cal-EPA Office ofEnvironmental Health Hazard Assessment (OEHHA). The Emissions and Potency Procedure involves calculation ofone or more numerical scores for a facility based on the following factors: emissions, potency or toxicity of compounds emitted, and receptor proximity. The procedure was designed to be straightforward and to be applied consistently to every facility. Moreover, it is designed to assure that high risk facilities are ranked high priority. Using the prioritization procedure, facilities receive one or more numerical scores: potential carcinogenic effect, potential chronic non-carcinogenic effect, and potential acute non-carcinogenic effect. Facilities will then be prioritized based on the highest ofthe calculated scores. For facilities that emit carcinogenic compounds, a facility score is calculated for carcinogenic effects according to the following equation:

Where: TS = 

### total facility score (carcinogenic effects) c 

# = specific carcinogenic substance Ec = 

### emissions ofcompound c, lbs/yr Pc = 

### unit risk factor for compound c RP = 

### receptor proximity adjustment factor (Table I-I) 1.7x1 Q3 = 

### normalization factor For facilities that emit compounds which have non-cancer health effects, facility scores are calculated for chronic and acute non-cancer effects according to the following equation: TS* = 

### (EE/PJ(RP)(NF) Where:

September 1996 I- 1 

# I

### TS* = 

### total facility score (chronic oracute non-carcinogenic effects) t 

### = 

### specific toxic substance**~** = 

### emissions ofcompound t, lbs/hr (average or maximum) Pt = 

### acceptable exposure level oft, flg/m3 RP = 

### receptor proximity adjustment factor (Table 1-1) NF = 

### normalization factor NF = 

### 150 for chronic exposure NF = 

### 1500 for acute exposure

Table 1-1 Receptor Proximity Adjustment Factors Receptor Proximity (R, meters) RP (dimensionless) O<R< 100 1 100<R<250 0.25 250<R<500 0.04 500<R< 1000 0.011 1000< R < 1500 0.003 1500< R < 2000 0.002 R>2000 0.001
The receptor proximity factor is based on the distance from the facility to the nearest receptor. A receptor may be a residence, school, day care center, hospital, or workplace; or an area zoned for these uses. The receptor proximity is determined by adding the distance from the facility property line to the nearest receptor or potential receptor and the distance from the facility's nearest emitting source to the facility property line. Where adequate information on the receptor proximity is not available, a receptor proximity factor of 1 can be used as a screening assumption. In any case, this default value will likely be correct for most facilities, as the majority of auto bodyshops are located less than 100 meters from the nearest receptor. However, for facilities initially categorized as high priority using default receptor proximity data, actual receptor proximity data should be obtained for a refined priority score calculation before proceeding with a scoping level health risk assessment.

September 

### 1996 1- 2 

# I

### The unit risk factors and acceptable exposure levels to be used are contained in Appendix C as derived from the current version of the CAPCOA Air Toxics "Hot Spots" Program Risk Assessment Guidelines. Values labeled as "screening", "preliminary", or "proposed", or which OEHHA otherwise indicates are not recommended for use in prioritization, may be used at the discretion of an individual District. The task force recommends that facilities with scores less than or equal to one be categorized as low priority, and facilities with scores greater than or equal to 10 be categorized as high priority. All other facilities will be placed in the intermediate priority category. The basis for the recommended thresholds is included in the CAPCOA Air Toxics "Hot Spots" Program Facility Prioritization Guidelines.
Note that this procedure was developed using a minimum distance of50 

### meters from the source to the nearest receptor, and may not be applicable for auto bodyshops with source to receptor distances ofless than 50 

### meters.

September 

### 1996 I- 3ISCST2

- (DATED 93109)
{/.) IBM-PC VERSION (2 .1 ) ISCST2X (C) COPYRIGHT 1992, TRINITY CONSULTANTS, INC.**~** SERIAL NUMBER 10592 SOLD TO SAN DIEGO AIR POLLUTION '"0


## ....**~** Run Began on 5/24/1995 at 17:12:40 

### 3 cr**~** ••• TRINITY SOURCE FILE NAME: C:\MODELS\DATA\AUTOBOL2.PNT 

### ..., ••• TRINITY DOWNWASH FILE NAME: C:\MODELS\DATA\AUTOBOL2.WA!t )> ••• TRINITY RECEPTOR FILE NAME: C:\MODELS\DATA\AUTOBOD.REC

,__ CO STARTING "C \0 CO TITLEONE Autobody Shop Run 1 "C \0 CO TITLETWO Lindbergh (Coastal) Meteorology CD 0\ CO MODELOPT DFAULT CONC RURAL :J CO AVERTIME 1 MONTH PERIOD CO POLLUTID POLL1 

## c. 

# -· CO TEJUUIGTS FLAT 

### >< CO ELJMJNIT METERS CO RUNORNOT RUN 

## c... CO FINISHED SO STARTING SO LOCATION 812530 POINT 0.00 0.00 0.00 

# c SO SRCPARAM 812530 1.000000 7.62 294.26 9.1440 0.762 SO LOCATION 812575 POINT 0.00 0.00 0.00 

# -· SO SRCPARAM 812575 1.000000 7.62 294.26 22.8600 0.610 (I) SO LOCATION 813030 POINT 0.00 0.00 0.00 "C SO SRCPARAM 813030 1.000000 9.14 294.26 9.1440 0.762 CD SO LOCATION 813075 POINT 0.00 0.00 0.00 '"'l SO SRCPARAM 813075 1.000000 9.14 294.26 22.8600 0.610 (/) 

# -· SO LOCATION B125D POINT 0.00 0.00 0.00 0 SO SRCPARAM 81250 1.000000 7.62 294.26 0.0000 1.524 :J SO LOCATION B130D POINT 0.00 o.oo 0.00**~** SO SRCPARAM B130D 1.000000 9.14 294.26 0.0000 1.524 

# s: I SO LOCATION B225D POINT 0.00 0.00 0.00



### ...... SO SRCPARAM B225D 1.000000 7.62 294.26 0.0000 1.524 0 SO LOCATION 82300 POINT o.oo 0.00 0.00 

## c. SO SRCPARAM 82300 1.000000 9.14 294.26 0.0000 1.524 SO LOCATION B325D POINT 0.00 0.00 0.00**~** SO SRCPARAM B325D 1.000000 7.62 294.26 0.0000 1.524 SO LOCATION B330D POINT 0.00 0.00 0.00 

# - SO SRCPARAM 83300 1.000000 9.14 294.26 0.0000 1.524 :J SO LOCATION B425D POINT 0.00 0.00 0.00 "C SO SRCPARAM B425D 1.000000 7.62 294.26 0.0000 1.524 - 

## c SO LOCATION 84300 POINT 0.00 0.00 0.00 

# ,... SO SRCPARAM B430D 1.000000 9.14 294.26 0.0000 1.524 (I) SO LOCATION FOG1 VOLUME 0.00 o.oo 0.00 SO SRCPARAM FOG1 0.500000 0.76 1.42 0.71 Q) SO LOCATION FOG2 VOLUME 0.00 0.00 0.00 ::J SO SRCPARAM FUG2 0.500000 0.76 1.42 0.71 

## c. SO BUILDHGT 812530 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 812530 6.10 6.10 6.10 6.10 6.10 6.10 

## :a SO 8UILDHGT 812530 6.10 6.10 6.10 6.10 6.10 6.10 CD SO 8UILDHGT 812530 6.10 6.10 6.10 6.10 6.10 6.10 (I) SO BUILDHGT 812530 6.10 6.10 6.10 6.10 6.10 6.10 SO BUILDHGT 812530 6.10 6.10 6.10 6.10 6.10 6.10 

## c


# - SO BUILDWID 812530 8.53 8.53 8.53 8.53 8.53 8.53 

# ,... SO BUILDWID 812530 8.53 8.53 8.53 8.53 8.53 8.53 (/) SO 8UILDKID 812530 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 812530 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 812530 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 812530 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDHGT 813030 6.10 6.10 6.10 6.10 6.10 6.10 SO BUILDHGT 813030 6.10 6.10 6.10 6.10 6.10 6.10 SO BUILDHGT 813030 6.10 6.10 6.10 6.10 6.10 6.10



# -SO 8UILOHGT 813030 6.10 6.10 6.10 6.10 6.10 6.10 Ul SO 8UILDHGT 813030 6.10 6.10 6.10 6.10 6.10 6.10**~** SO 8UILOHGT 813030 6.10 6.10 6.10 6.10 6.10 6.10 '0 SO 8UILDWIO 813030 8.53 8.53 8.53 8.53 8.53 8.53



### ..... SO 8UILDWIO 813030 8.53 8.53 8.53 8.53 8.53 8.53**~** 

### 3 SO 8UILDWIO 813030 8.53 8.53 8.53 8.53 8.53 8.53 0" SO 8UILDWIO 813030 8.53 8.53 8.53 8.53 8.53 8.53**~** SO 8UILDWIO 813030 8.53 8.53 8.53 8.53 8.53 8.53 '"I SO 8UILDWIO 813030 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILOHGT 81250 6.10 6.10 6.10 6.10 6.10 6.10 SO BUILDHGT 81250 6.10 6.10 6.10 6.10 6.10 6.10


# - SO 8UILDHGT 81250 6.10 6.10 6.10 6.10 6.10 6.10 \0 SO 8UILOHGT 81250 6.10 6.10 6.10 6.10 6.10 6.10 \0 SO 8UILOHGT 81250 6.10 6.10 6.10 6.10 6.10 6.10 01 SO 8UILOHGT 81250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDWIO 81250 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWIO 81250 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWIO 81250 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWIO 81250 8.53 8.53 8.53 8.53 8.53 8.53 SO BUILDWIO 81250 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWIO 81250 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILOHGT 81300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 81300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILOHGT 81300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILOHGT 81300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 81300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILOHGT 81300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDWIO 81300 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWIO 81300 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWIO 81300 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWIO 81300 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWIO 81300 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWIO 81300 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILOHGT 82250 6.10 6.10 6.10 6.10 6.10 6.10

...... SO 8UILOHGT 82250 6.10 6.10 6.10 6.10 6.10 6.10 I SO 8UILDHGT 82250 6.10 6.10 6.10 6.10 6.10 6.10 N SO 8UILDHGT 82250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 82250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILOHGT 82250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDWIO 82250 23.77 23.77 23.77 23.77 23.77 23.77 SO 8UILDWIO 82250 23.77 23.77 23.77 23.77 23.77 23.77 SO 8UILDWIO 82250 23.77 U.77 23.77 23.77 23.77 23.77 SO 8UILDWIO 82250 23.77 23.77 23.77 23.77 23.77 23.77 SO 8UILDWIO 82250 23.77 23.77 23.77 23.77 23.77 23.77 SO 8UILDWIO 82250 23.77 23.77 23.77 23.77 23.77 23.77 SO 8UILOHGT 82300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILOHGT 82300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 82300 6.10 6.10 6.10 6.10 6.10 6.10 SO BUILDHGT 82300 6.10 6.10 6.10 6.10 6.10 6.10 SO 80ILOHGT 82300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 82300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDWIO 82300 23.77 23.77 23.77 23.77 23.77 23.77 SO 8UILDWIO 82300 23.77 23.77 23.77 23.77 23.77 23.77 SO 80ILDWIO 82300 U.77 23.77 23.77 23.77 23.77 23.77 SO 8UILDWIO 82300 23.77 23.77 23.77 23.77 23.77 23.77 SO 80ILDWIO 82300 23.77 23.77 23.77 23.77 23.77 23.77 SO 80ILDWIO 82300 23.77 23.77 23.77 23.77 23.77 23.77 SO 8UILDHGT 83250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 83250 6.10 6.10 6.10 6.10 6.10 6.10 SO 80ILDHGT 83250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 83250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILOHGT 83250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 83250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDWIO 83250 38.10 38.10 38.10 38.10 38.10 38.10 SO 8UILDWIO 83250 38.10 38.10 38.10 38.10 38.10 38.10 SO 8UILDWIO 83250 38.10 38.10 38.10 38.10 38.10 38.10SO 8UILDWID 83250 38.10 38.10 38.10 38.10 38.10 38.10 SO 8UILDWID 83250 38.10 38.10 38.10 38.10 38.10 38.10 SO 8UILDWID 83250 38.10 38.10 38.10 38.10 38.10 38.10 SO 8UILDHGT 8330D 6.10 6.10 6.10 6.10 6.10 6.10 

### en SO 8UILDHGT 83300 6.10 6.10 6.10 6.10 6.10 6.10 (D SO 8UILDHGT 83300 6.10 6.10 6.10 6.10 6.10 6.10 'ij SO 8UILDHGT 83300 6.10 6.10 6.10 6.10 6.10 6.10



### ..... SO 8UILDHGT 83300 6.10 6.10 6.10 6.10 6.10 6.10 (D 

### 3 SO 8UILDHGT 83300 6.10 6.10 6.10 6.10 6.10 6.10 0' SO BUILDWID 83300 38.10 38.10 38.10 38.10 38.10 38.10 (D SO 8UILDWID 83300 38.10 38.10 38.10 38.10 38.10 38.10 "1 SO 8UILDWID 83300 38.10 38.10 38.10 38.10 38.10 38.10 SO 8UILDWID 83300 38.10 38.10 38.10 38.10 38.10 38.10 SO 8UILDWID 83300 38.10 38.10 38.10 38.10 38.10 38.10



### ..... SO 8UILDWID 83300 38.10 38.10 38.10 38.10 38.10 38.10 'D SO 8UILDHGT 84250 6.10 6.10 6.10 6.10 6.10 6.10 'D SO 8UILDHGT 84250 6.10 6.10 6.10 6.10 6.10 6.10 0\ SO 8UILDHGT 84250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 84250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 84250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 84250 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDWID 84250 54.86 54.86 54.86 54.86 54.86 54.86 SO 8UILDWID 84250 54.86 54.86 54.86 54.86 54.86 54.86 SO 8UILDWID 84250 54.86 54.86 54.86 54.86 54.86 54.86 SO 8UILDWID 84250 54.86 54.86 54.86 54.86 54.86 54.86 SO 8UILDWID 8425D 54.86 54.85 54.86 54.86 54.86 54.86 SO 8UILDWID 84250 54.86 54.86 54.86 54.86 54.86 54.86 SO 8UILDHGT 84300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 84300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 8430D 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 8430D 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 84300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 84300 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDWID 84300 54.86 54.86 54.86 54.86 54.86 54.86

....... SO 8UILDWID 84300 54.86 54.86 54.86 54.86 54.86 54.86 I SO 8UILDWID 84300 54.86 54.86 54.86 54.86 54.86 54.86 w SO 8UILDWID 84300 54.86 54.86 54.86 54.86 54.86 54.86 SO 8UILDWID 84300 54.86 54.86 54.86 54.86 54.86 54.86 SO 8UILDWID 84300 54.86 54.86 54.86 54.86 54.86 54.86 SO 8UILDHGT 812575 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 812575 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 812575 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 812575 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 812575 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 812575 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDWID 812575 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 812575 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 812575 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 812575 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 812575 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 812575 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDHGT 813075 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 813075 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 813075 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 813075 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 813075 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDHGT 813075 6.10 6.10 6.10 6.10 6.10 6.10 SO 8UILDWID 813075 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 813075 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 813075 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 813075 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 813075 8.53 8.53 8.53 8.53 8.53 8.53 SO 8UILDWID 813075 8.53 8.53 8.53 8.53 8.53 8.53 SO EMISUNIT 1000000.000000 GRAMS/SEC MICROGRAMS/M**3 SO SRCGROUP 8_12530 812530 SO SRCGROUP 8_12575 812575



# -(/.) 

## .g rt· 3 0"**~**

....... \0 \0 0\

....... I**~** SO SRCGROUP 8_13030 813030 SO SRCGROUP 8_13075 813075 SO SRCGROUP 8_1250 81250 SO SRCGROUP 8_1300 81300 SO SRCGROUP B_2250 B2250 SO SRCGROUP 8_2300 82300 SO SRCGROUP B_3250 83250 SO SRCGROUP B_3300 83300 SO SRCGROUP 8_4250 B4250 SO SRCGROUP B_4300 B4300 SO SRCGROUP FOG FUG1 FUG2 SO FINISHED RE STARTING RE GRIOPOLR AUTO RE GRIOPOLR AUTO RE GRIDPOLR AUTO RE GRIDPOLR AUTO RE GRIDPOLR AUTO RE GRIDPOLR AUTO RE GRIDPOLR AUTO RE GRIDPOLR AUTO RE GRIDPOLR AUTO RE FINISHED ME STARTING**~A** ORIG 0.00 0.00 DIST 10.00 25.00 50.00 75.00 DIST 100.00 125.00 150.00 175.00 OIST 200.00 250.00 300.00 350.00 OIST 400.00 450.00 500.00 600.00 OIST 750.00 1000.00 GOIR 36 0.00 10.00 END
ME INPOTFIL C:\MODELS\MET\SANMYF88.8IN UNFORM ME ANEIIHGHT 10.000 METERS ME SURFDATA 23188 1988 LINDBERGH ME UAIRDATA 3131 1988 MONTGOMERY ME STARTEND 1988 1 1 1 1988 12 31 24 ME FINISHED OU STARTING OU RECTABLE 1 FIRST OU RECTABLE MONTH FIRST OU FINISHED *********************************** ••• SETUP Finishes Successfully ••• ***********************************



# -Vl 

## .g ft 

### 3 CT**~**

,.._ \0 \0 0\



### ...... I VI ISCST2

- VERSION 93109 *** ••• Autobody Shop Run 1 ••• Lindbergh (Coastal) Meteorology * * * MODELING OPTIONS USED: CONC RURAL FLAT DFAULT ** * MODEL SETUP OPTIONS SUMMARY **Model Is Setup For Calculation of Average CONCentration Values. **Model Uses RURAL Dispersion. **Model Uses Regulatory DEFAULT Options: 1. Final Plume Rise. 2. Stack-tip Downwash. 3. Buoyancy-induced Dispersion. 4. Use Calms Processing Routine. 5. Not Use Missing Data Processing Routine. 6. Default Wind Profile Exponents. 7. Default Vertical Potential Temperature Gradients. 8. •Upper Bound• Values for Supersquat Buildings. 9. No Exponential Decay for RURAL Mode ""Model Assumes Receptors on FLAT Terrain. **Model Assumes No FLAGPOLE Receptor Heights. **Model Calculates 2 Short Term Average(s) of: and Calculates PERIOD Averages 1-HR MONTH
**Thia Run Includes: 14 Source(sll 13 Source Group(sll and **The Model Assumes A Pollutant Type of: POLL1 **Model Set To Continue RUNning After the Setup Testing

. **Output Options Selected: Model Outputs Tables of PERIOD Averages by Receptor 648 Receptor(&) 

### •••

Model Outputs Tables of Highest Short Term Values by Receptor (RECTABLE Keyword) **NOTE: The Following Flags May Appear Following CONC Values: c for Calm Hours m for Missing Hours b for Both Calm and Missing Hours **Misc. Inputs: Anem. Hgt. (m) • 10.00 1 Decay Coef. • 0.0000 Rot. Angle • 0.0 Emission Units • GRAMS/SEC Emission Rate Unit Factor • Output Units • MICROGRAMS/M**3 

# ... ...

0.10000E+07 **Input Runstream File: C:\MODELS\DATA\AUTOBOL2.DAT **Output Print File: C:\MODELS\DATA\AUTOBOL2.LST 05/24/95 17:12:43 PAGE 1



# -Cl:l 

## .g

.... ('D 

### 3 0" ('D "1

....... 'D 'D 0\

'-4 I 0\ *** ISCST2

- VERSION 93109 *** •** Autobody Shop Run 1 

# ... 05/24/95 *** Lindbergh (Coastal) Meteorology 

# ... 17:12:43 PAGE 2 *** MODELING OPTIONS USED: CONC RURAL FLAT DFAULT

*** POINT SOURCE DATA •••
NUMBER EMISSION RATE BASE STACK STACK STACK STACK BUILDING EMISSION RATE SOURCE PART. (USER UNITS) X y ELEV. HEIGHT TEMP. EXIT VEL. DIAMETER EXISTS SCALAR VARY

ID CATS. (METERS) (METERS) (METERS) (METERS) (DEG.K) (M/SEC) (METERS) BY



### - - 

## - - - - - - 

### - - - - - - 

### - - - 

### - - - 

## - - - - - - - 

### - - - - - 

### - - 

## - - - - 

### - - - - 

### - 

## - - - - - - - - - 

### - 

## - - - - - - - -

B125l0 0 0.10000E+01 0.0 0.0 0.0 7.62 294.26 9.14 0.76 YES B12575 0 0.10000E+01 0.0 0.0 0.0 7.62 294.26 22.86 0.61 YES B130l0 0 O.lOOOOE+Ol 0.0 0.0 0.0 9.14 294.26 9.14 0.76 YES Bl3075 0 O.lOOOOE+Ol 0.0 0.0 0.0 9.14 294.26 22.86 0.61 YES B125D 0 0.10000E+01 0.0 0.0 0.0 7.62 294.26 0.00 1.52 YES B130D 0 0.10000E+01 0.0 0.0 0.0 9.14 294.:16 0.00 1.52 YES B225D 0 0.10000E+01 0.0 0.0 0.0 7.62 294.26 0.00 1.52 YES B230D 0 0.10000£+01 0.0 0.0 0.0 9.14 294.26 0.00 1.52 YES B325D 0 0.10000E+01 0.0 0.0 0.0 7.62 294.26 0.00 1.52 YES B330D 0 0.10000£+01 0.0 0.0 0.0 !1.14 294.26 0.00 1.52 YES B425D 0 0.10000£+01 0.0 0.0 0.0 7.62 294.26 0.00 1.52 YES B430D 0 0.10000£+01 0.0 0.0 0.0 9.14 294.26 0.00 1.52 YES



# -Cl) 

## .g (b 

### 3 0"**~**



# - \0 \0 0'1**~** ...:I ISCST2

- VERSION 93109 *** *** Autobody Shop Run 1 *** Lindbergh (Coastal) Meteorology *** MODELING OPTIONS USED: CONC RURAL FLAT DFAULT

*** VOLUME SOURCE DATA NUMBER EMISSION RATB BASE RELEASE INIT. SOURCE PART. (USER UNITS) X y ELEV. HEIGHT SY

ID CATS. (METERS) (METERS) (METERS) (METERS) (METERS) INIT. EMISSION RATB sz SCALAR VARY (METERS) BY *** *****05/2~/95 17:12:~3**  PAGE 3



## - - 

## - - - - 

## - - - - 

## - - - - - - - - 

## - - - 

## - - - - 

## - - - 

## - - - - - - 

### - 

## - - - 

## - - - 

## - - 

## - - 

## - - - 

## - - 

## - - - 

## - - - 

## - - - - -

FUG1 0 0.50000E+00 0.0 0.0 0.0 0.76 1.42 0.71 FUG2 0 0.50000E+00 0.0 0.0 0.0 0.76 1.42 0.71



# -en 

## .g fD 

## a 0"**~**



# - \0 \0 0'1

'j4 00 ISCST2

- VERSION 93109 *** ••• Autobody Shop jtun 1 ••• Lindbergh (Coastal) Meteorology ••* MODELING OPTIONS USED: CONC RURAL FLAT DFAULT

••• SOURCE IDs DEFINING SOURCE GROUPS ••• GROUP ID SOURCE IDs

8_12530 812530 8_12575 812575 8_13030 813030 8_13075 813075 8_125D 8125D 8_130D 8130D 8_225D 8225D 8_230D 8230D 8_325D 8325D 8_330D 83300 8_425D 8425D 8_430D 8430D
FUG FUG1 , FUG2 

# ... ... 05/24/95 17:12:43 PAGE 4



# -ISCST2

- VERSION 93109 *** ••• Autobody Shop ll.un 1 

# ... 05/24/95 ••• Lindbergh (Coastal) Meteorology *** 17:12:43 PAGE 5 *** MODELING OPTIONS USED: CONC II.UII.AL FLAT DFAULT Cl".l *** DIII.ECTION SPECIFIC BUILDING DIMENSIONS *** 

## .g

.....**~** 

### 3 SOURCE ID: B12530 0" IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK**~** 1 6.1, 8.5, 0 2 6.1, 8.5, 0 3 6.1, 8.5, 0 4 6.1, 8.5, 0 5 6.1, 8.5, 0 6 6.1, 8.5, 0 7 6.1, 8.5, 0 8 6.1, 8.5, 0 9 6.1, 8.5, 0 10 6.1, 8.5, 0 11 6.1, 8.5, 0 12 6.1, 8.5, 0 13 6.1, 8.5, 0 14 6.1, 8.5, 0 15 6.1, 8.5, 0 16 6.1, 8.5, 0 17 6.1, 8.5, 0 18 6.1, 8.5, 0 19 6.1, 8.5, 0 20 6.1, 8.5, 0 21 6.1, 8.5, 0 22 6.1, 8.5, 0 23 6.1, 8.5, 0 24 6.1, 8.5, 0 

# - 25 6.1, 8.5, 0 26 6.1, 8.5, 0 27 6.1, 8.5, 0 28 6.1, 8.5, 0 29 6.1, 8.5, 0 30 6.1, 8.5, 0 \0 31 li.1, 8.5, 0 32 6.1, 8.5, 0 33 6.1, 8.5, 0 34 6.1, 8 .5, 0 35 6.1, 8.5, 0 36 6.1, 8.5, 0 \0 0'1 SOURCE ID: B12575 IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK

1 6.1, 8.5, o 2 6.1, 8.5, 0 3 6.1, 8.5, 0 4 6.1, 8.5, 0 5 6.1, 8.5, 0 6 6.1, 8.5, 0 7 6.1, 8.5, 0 8 6.1, 8.5, 0 9 6.1, 8.5, 0 10 6.1, 8.5, 0 11 6.1, 8.5, 0 12 6.1, 8.5, 0 13 6.1, 8.5, 0 14 6.1, 8.5, 0 15 6.1, 8.5, 0 16 6.1, 8.5, 0 17 6.1, 8.5, 0 18 6.1, 8.5, 0 19 6.1, 8.5, 0 20 6.1, 8.5, 0 21 6.1, 8.5, 0 22 6.1, 8.5, 0 23 6.1, 8.5, 0 24 6.1, 8.5, 0 25 6.1, 8.5, 0 26 6.1, 8.5, 0 27 6.1, 8.5, 0 28 6.1, 8.5, 0 29 6.1, 8 .5, 0 30 6.1, 8.5, 0 31 6.1, 8.5, 0 32 6.1, 8.5, 0 33 6.1, 8.5, 0 34 6.1, 8.5, 0 35 6.1, 8.5, 0 36 6.1, 8.5, 0

SOURCE ID: B13030

IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK

1 6.1, 8.5, 0 2 6.1, 8.5, 0 3 6.1, 8.5, 0 4 6.1, 8.5, 0 5 6.1, 8 .5, 0 6 6.1, 8.5, 0 7 6.1, 8.5, 0 8 6.1, 8.5, 0 9 6.1, 8.5, 0 10 6.1, 8.5, 0 11 6.1, 8.5, 0 12 6.1, 8.5, 0


# ... 13 6.1, 8 .5, 0 14 6.1, 8.5, 0 15 6.1, 8.5, 0 16 6.1, 8.5, 0 17 6.1, 8.5, 0 18 6.1, 8.5, 0 19 6.1, 8.5, 0 20 6.1, 8.5, 0 21 6.1, 8.5, 0 22 6.1, 8.5, 0 23 6.1, 8.5, 0 24 6.1, 8.5, 0 \0 25 6.1, 8.5, 0 26 6.1, 8.5, 0 27 6.1, 8.5, 0 28 6.1, 8.5, 0 29 6.1, 8.5, 0 30 6.1, 8.5, 0 31 li.1' 8.5, 0 32 6.1, 8.5, 0 33 6.1, 8.5, 0 34 6.1, 8.5, 0 35 6.1, 8.5, 0 36 6.1, 8.5, 0

SOURCE ID: 813075

IFV BH BW WAK IFV BH ll1f tfAJ( IFV BH BW tfAJ( IFV BH BW WAK IFV BH BW WAK IFV BH BW WAK

1 6.1, 8.5, 0 2 6.1, 8.5, 0 3 6.1, 8.5, 0 4 6.1, 8.5, 0 5 6.1, 8.5, 0 6 6.1, 8.5, 0 7 6.1, 8.5, 0 8 6.1, 8.5, 0 9 6.1, 8.5, 0 10 6.1, 8.5, 0 11 6.1, 8.5, 0 12 6.1, 8.5, 0 13 6.1, 8.5, 0 14 6.1, 8.5, 0 15 6.1, 8.5, 0 16 6.1, 8.5, 0 17 6.1, 8.5, 0 18 6.1, 8.5, 0 19 6.1, 8.5, 0 20 6.1, 8.5, 0 21 6.1, 8.5, 0 22 6.1, 8.5, 0 23 6.1, 8.5, 0 24 6.1, 8.5, 0 25 6.1, 8.5, 0 26 6.1, 8.5, 0 27 6.1, 8.5, 0 28 6.1, 8.5, 0 29 6.1, 8.5, 0 30 6.1, 8.5, 0 31 6.1, 8.5, 0 32 6.1, 8.5, 0 33 6.1, 8.5, 0 34 6.1, 8.5, 0 35 6.1, 8.5, 0 36 6.1, 8.5, 0



# -ISCST2

- VERSION 93109 ••• ••• Autobody Shop Run 1 

# ... 05/24/95 ••• Lindbergh (Coastal) Meteorology 

# ... 17:12:43 PAGE 6 ••• MODELING OPTIONS USED: CONC RURAL FLAT DFAULT Cl'.l 

## .g ••• DIRECTION SPECIFIC BUILDING DIMENSIONS ••• 

### ft 

### 3 SOURCE ID: B125D CT IFV BH BW WAK IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX (I) 1 6.1, a.5, 0 2 6.1, 8.5, 0 3 6.1, a.5, 0 4 6.1, 8.5, 0 5 6.1, 8.5, 0 6 6.1, 8.5, 0 '"1 7 6.1, 8.5, 0 8 6.1, 8.5, 0 9 6.1, 8.5, 0 10 6.1, 8.5, 0 11 6.1, 8.5, 0 12 6.1, a.5, 0 13 6.1, a.5, 0 14 6.1, 8.5, 0 15 6.1, 8.5, 0 16 6.1, 8.5, 0 17 6.1, a.5, 0 18 6.1, 8.5, 0 19 6.1, 8.5, 0 20 6.1, 8.5, 0 21 6.1, 8.5, 0 22 6.1, 8.5, 0 23 6.1, 8.5, 0 24 6.1, 8.5, 0 

# .... 25 6.1, 8.5, 0 26 6.1, a.5, 0 27 6.1, 8.5, 0 28 6.1, 8.5, 0 29 6.1, 8.5, 0 30 6.1, 8.5, 0 \0 31 6.1, 8.5, 0 32 6.1, a.5, 0 33 6.1, a.5, 0 34 6.1, a.5, 0 35 6.1, a.5, 0 36 6.1, a.5, 0 \0 0\ SOURCE ID: B130D IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAK IFV BH BW WAX IFV BH BW WAX

1 6.1, a.5, o 2 6.1, a.5, 0 3 6.1, a.5, 0 4 6.1, 8.5, 0 5 6.1, 8.5, 0 6 6.1, 8.5, 0 7 6.1, 8.5, 0 8 6.1, a.5, 0 9 6.1. a.5, 0 10 6.1, a.5, 0 11 6.1, 8.5, 0 12 6.1, a.5, 0 13 6.1. 8.5, 0 14 6.1, 8.5, 0 15 6.1, 8.5, 0 16 6.1, 8.5, 0 17 6.1, a.5, 0 18 6.1, 8.5, 0 19 6.1, a.5, 0 20 6.1, 8.5, 0 21 6.1, 8.5, 0 22 6.1, a.5, 0 23 6.1, a.5, 0 24 6.1, a.5, 0 25 6.1, a.5, o 26 6.1, 8.5, 0 27 6.1, a.5, 0 2a 6.1, 8.5, 0 29 6.1, 8.5, 0 30 6.1, 8.5, 0 31 6.1, 8.5, 0 32 6.1, 8.5, 0 33 6.1, 8.5, 0 34 6.1, 8.5, 0 35 6.1, 8.5, 0 36 6.1, a.5, 0

SOURCE ID: B225D

IFV BH BW WAK IFV BH BW WAK IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX

1 6.1, 23.8, 0 2 6.1, 23.8, 0 3 6.1, 23.8, 0 4 6.1, 23.8, 0 5 6.1, :u.s, 0 6 6.1, 23.8, 0 7 6.1, 23.8, 0 8 6.1, 23.8, 0 9 6.1, 23.8, 0 10 6.1, 23.8, 0 11 6.1, 23.8, 0 12 6.1, 23.8, 0 'j-4 13 6.1, 23.8, 0 14 6.1, 23 .8, 0 15 6.1, 23 .8, 0 16 6.1, 23.8, 0 17 6.1, 23.8, 0 18 6.1, 23 .8, 0 19 6.1, 23.8, 0 20 6.1, 23.8, 0 21 6.1, 23.a, 0 22 6.1, 23.a, 0 23 6.1, 23.8, 0 24 6.1, 23 .a. o 

# - 25 6.1, 23.8, 0 26 6.1, 23 .a, o 27 6.1, 23.a, 0 28 6.1, 23.8, 0 29 6.1, 23.8, 0 30 6.1, 23.a, 0 0 31 6.1, 23.8, 0 32 6.1, 23 .8, 0 33 6.1, 23.a, 0 34 6.1, 23.8, 0 35 6.1, 23.a, 0 36 6.1, 23.8, 0

SOURCE ID: B230D

IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX

1 6.1, 23.a, 0 2 6.1, 23 .a, 0 3 6.1, 23.a, 0 4 6.1, 23.a, 0 5 6.1, 23.8, 0 6 6.1, 23.a, 0 7 6.1, 23.8, 0 a 6.1, 23.8, 0 9 6.1, 23.8, 0 10 6.1, 23.a, 0 11 6.1, 23.8, 0 12 6.1, 23 .a. 0 13 6.1, 23.8, 0 14 6.1, 23 .a, o 15 6.1, 23 .8, 0 16 6.1, 23.a, 0 17 6.1, 23 .a, 0 18 6.1, 23.a, 0 19 6.1, 23.a, 0 20 6.1, 23 .a, 0 21 6.1, 23.8, 0 22 6.1, 23.a, 0 23 6.1, 23.a, 0 24 6.1, 23.a, 0 25 6.1, 23.a, 0 26 6.1, 23.8, 0 27 6.1, :.13.8, 0 2a 6.1, 23.a, 0 29 6.1, 23.8, 0 30 6.1, 23.a, 0 31 6.1, 23 .a, 0 32 6.1, ·23 .a. 0 33 6.1, 23.a, 0 34 6.1, 23.8, 0 35 6.1, 23.8, 0 36 6.1, 23 .8, 0



# -*** ISCST2

- VERSION 93109 *** u • Autobody Shop Run 1 

# ... 05/l4/95 ••• Lindbergh (Coastal) Meteorology 

# ... 17:12:43 PAGE 7 *** MODELING OPTIONS USED: CONC RURAL FLAT DFAULT 

### en ••• DIRECTION SPECIFIC BUILDING DIMENSIONS ••• 

# .g

..... 0 SOURCE ID: B325D 

### 3 IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX cr 1 6.1, 38.1, 0 2 6.1, 38.1, 0 3 6.1, 38.1, 0 4 6.1, 38.1, 0 5 6.1, 38.1, 0 6 6.1, 38 .1, 0**~** 7 6.1, 38.1, 0 8 6.1, 38.1, 0 9 6.1, 38.1, 0 10 6.1, 38.1, 0 11 6.1, 38 .1, 0 12 6.1, 38.1, 0 13 6.1, 38.1, 0 u 6.1, 38.1, 0 15 6.1, 38.1, 0 16 6.1, 38.1, 0 17 6.1, 38.1, 0 18 6.1, 38.1, 0 19 6.1, 38 .1, 0 20 6.1. 38.1, 0 21 6.1, 38 .1, 0 22 6.1, 38 .1, 0 23 6.1, 38.1, 0 24 6.1, 38 .1, 0

,..._ 25 6.1, 38.1, 0 26 6.1. 38.1, 0 27 6.1, 38.1, 0 28 6.1, 38.1, 0 29 6.1, 38.1, 0 30 6.1, 38 .1, 0 1.0 31 6.1, 38 .1, 0 32 6.1, 38 .1, 0 33 6.1, 38.1, 0 34 6.1, 38 .1, 0 35 6.1, 38.1, 0 36 6. 1, 38.1, 0 1.0 0\ SOURCE ID: B330D IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX

1 6.1, 38.1, 0 2 6.1. 38.1, 0 3 6.1, 38.1, 0 4 6.1, 38.1, 0 5 6.1, 38.1, 0 6 6.1, 38.1, 0 7 6.1, 38.1, 0 8 6.1, 38.1, 0 9 6.1. 38.1, 0 10 6.1, 38.1, 0 11 6.1, 38.1, 0 12 6.1, 38.1, 0 13 6.1, 38.1, 0 14 6.1, 38.1, 0 15 6.1, 38.1, 0 16 6.1, 38.1, 0 17 6.1, 38.1, 0 18 6.1, 38.1, 0 19 6.1, 38 .1, 0 20 6.1, 38.1, 0 21 6.1, 38 .1, 0 22 6.1, 38.1, 0 23 6.1, 38.1, 0 24 6.1, 38.1, 0 25 6.1, 38.1, 0 26 6.1, 38.1, 0 27 6.1, 38.1, 0 28 6.1, 38.1, 0 29 6.1, 38.1, 0 30 6.1, 38.1, 0 31 6.1, 38.1, 0 32 6.1, 38.1, 0 33 6.1, 38.1, 0 34 6.1, 38.1, 0 35 6.1, 38.1, 0 36 6.1, 38 .1, 0

SOURCE ID: B425D

IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX

1 6.1, 54.9, 0 2 6.1, 54.9, 0 3 6.1, 54.9, 0 4 6.1, 54.9, 0 5 6.1, 54.9, 0 6 6.1, 54.9, 0 7 6.1, 54.9, 0 8 6.1, 54.9, 0 9 6.1, 54.9, 0 10 6.1, 54.9, 0 11 6.1, 54.9, 0 12 6.1, 54.9, 0**~** 13 6.1, 54.9, 0 14 6.1, 54.9, 0 15 6.1, 54.9, 0 16 6.1, 54.9, 0 17 6.1, 54.9, 0 18 6.1, 54.9, 0 I 19 6.1, 54.9, 0 20 6.1, 54.9, 0 21 6.1. 54.9, 0 22 6.1, 54.9, 0 23 6.1, 54.9, 0 24 6.1. 54 .9, 0 ,..._ 25 6.1, 54.9, 0 26 6.1. 54.9, 0 27 6.1. 54.9, 0 28 6.1, 54.9, 0 29 6.1, 54.9, 0 30 6.1, 54.9. 0 

# - 31 6.1, 54.9, 0 32 6.1, 54.9, 0 33 6.1. 54.9, 0 34 6.1, 54.9, 0 35 6.1, 54.9, 0 36 6.1, 54.9, 0

SOURCE ID: B430D

IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX IFV BH BW WAX

1 6.1, 54.9, 0 2 6.1, 54.9, 0 3 6.1. 54.9, 0 4 6.1, 54.9, 0 5 6.1, 54.9, 0 6 6.1, 54.9, 0 7 6.1, 54.9, 0 8 6.1. 54 .9, 0 9 6.1, 54.9, 0 10 6.1, 54.9, 0 11 6.1, 54.9, 0 12 6.1, 54 .9, 0 13 6.1, 54.9, 0 14 6.1, 54.9, 0 15 6.1. 54.9, 0 16 6.1, 54.9, 0 17 6.1, 54.9, 0 18 6.1, 54.9, 0 19 6.1, 54.9, 0 20 6.1, 54.9, 0 21 6.1. 54.9, 0 22 6.1, 54.9, 0 23 6.1, 54.9, 0 24 6.1, 54.9, 0 25 6.1, 54.9, 0 26 6.1, 54 .9, 0 27 6.1, 54 .9, 0 28 6.1, 54 .9, 0 29 6.1, 54 .9, 0 30 6.1, 54.9, 0 31 6.1, 54.9, 0 32 6.1, 54.9, 0 33 6.1, 54.9, 0 34 6.1, 54.9, 0 35 6.1, 54.9, 0 36 6.1, 54.9, 0



# -

### en 

## .g 0 3 0"**~**

....... \0 \0 0\**~**


## ..... N *** ISCST2

- VERSION 93109 *** *** Autobody Shop Run 1 *** Lindbergh (Coastal) Meteorology *** MODELING OPTIONS USED: CONC RURAL FLAT DFAULT * * * GRIDDED RECEPTOR NETWORK SUMMARY * * * *** NETWORK ID: AUTO I NETWORK TYPE: GRIDPOLR * * * *** ORIGIN FOR POLAR NETWORK *** X-ORIG • 0.00 I Y-ORIG • 0.00 (METERS) *•• DISTANCE RANGES OF NETWORK * *• (METERS) 10.0, 25.0, 50.0, 75.0, 100.0, 125.0, 150.0, 175.0, 300.0, 350.0, 400.0, 450.0, 500.0, 600.0, 750.0, 1000.0, * * * DIRECTION RADIALS OF NETWORK * * * (DEGREES) 360.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0, 100.0, 110.0, 120.0, 130.0, 140.0, 150.0, 160.0, 170.0, 200.0, 210.0, 220.0, 230.0, 240.0, 250.0, 260.0, 270.0, 300.0, 310.0, 320.0, 330.0, 340.0, 350.0, 200.0,

80.0, 180.0, 280.0, 

# ... ...

250.0,

90.0, 190.0, 290.0, 05/24/95 17:12:43 PAGE 8



# -(/) 

## .g Cb 

### 3 0" (D ""t

....... \0 \0 0\

<-.j I

....... 

### w ••• ISCST2

- VERSION 93109 *** *** Autobody Shop Run 1 

# ... ••• Lindbergh (Coastal) Meteorology 

# ...
••• MODELING OPTIONS USED: CONC RURAL FLAT DFAULT *** METEOROLOGICAL DAYS SELECTED FOR PROCESSING *** (1•YES; O=NO) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 METEOROLOGICAL DATA PROCESSED BETWEEN START DATE: 88 1 1 1 AND END DATE: 88 12 31 24 NOTE: METEOROLOGICAL DATA ACTUALLY PROCESSED WILL ALSO DEPEND ON WHAT IS INCLUDED IN THE DATA FILE.

STABILITY CATEGORY A B c D E F

STABILITY CATEGORY A B c D E F UPPER BOUND OF FIRST THROUGH FIFTH WIND SPEED CATEGORIES *** (METERS/SEC)

1 .70000E-01 .700008-01 .100008+00 .15000E+00 .350008+00 .550008+00

1 .OOOOOE+OO .000008+00 .000008+00 .OOOOOE+OO .20000E-01 .350008-01 1.54, 3 .09, 5.14, 8.23, 10.80, *** WIND PROFILE EXPONENTS ***
WIND SPEED CATEGORY 2 3 4 .70000E-01 .70000E-01 .700008-01 .700008-01 .70000E-01 .700008-01 .10000E+OO .100008+00 .10000E+00 .15000E+00 .150008+00 .15000E+00 .350008+00 .350008+00 .350008+00 .55000E+OO .55000E+00 .55000E+00 *** VERTICAL POTENTIAL TEMPERATURE GRADIENTS *** (DEGREES ltELVIN PER METER)
WIND SPEED CATEGORY 2 .OOOOOE+OO .OOOOOE+OO .000008+00 .OOOOOE+OO .200008-01 .35000E-Ol 3 .OOOOOE+OO .OOOOOE+OO .000008+00 .OOOOOB+OO .20000E-01 .35000E-01 4 .OOOOOE+OO .OOOOOE+OO .000008+00 ,OOOOOB+OO .20000E-01 .35000E-01 5 .70000E-01 .70000E-01 .100008+00 .150008+00 .35000E+OO .55000E+OO

5 .OOOOOE+OO .OOOOOE+OO .000008+00 .OOOOOE+OO .200008-01 .350008-01 6 .70000E-01 .700008-01 .10000E+OO .15000E+OO .350008+00 .55000E+00

6 .OOOOOE+OO .OOOOOE+OO .OOOOOE+OO ,OOOOOE+OO .200008-01 .35000E-01 05/24/95 17:12:43 PAGE 20



# -Cll t1> "0

### ~ [



# - 1.0 1.0 0\

.....**~** Scenario Number 1 2 3 4 5 6 7

Scenario Number
1 2 3 4 

### .f> 6 7

Scenario Number 1 2**~** 4 5 6 7 

### Maximum X/Q 

### Values (ug/m3 perg/s) atSelected Distances forVarious SourceTypes and Meteorological Regimes

Table J-1 MaxX/Q ator beyond specified distances forthe Annual Avg Period Source Max X/Q at 10 m orbeyond Max X/Q at25 m or beyond Description San Diego SCREEN2 San Diego Coastal Inland Rural Urban Coastal 25-ft stack, 30 tps velocity 51 36 69 77 51 25-ft stack, 75 fps velocity 15 11 22 36 15 30-ft stack, 30 fps velocity 28 26 26 55 28 30-ft stack, 75 fps velocity 11 8 12 26 11 25-ft stack with obstruction to vertical flow 235 455 1015 423 235 30-ft stack with obstruction to vertical flow 96 177 450 205 96 Fugitive release outside ofa building 7667 13101 10808 5964 2450 Table J-2 MaxX/Q atorbeyond specified distances forthe Monthly Avg Period Inland 36 11 26 8 455 177 5433 SCREEN2 Rural Urban

69 77 22 36 26 55 12 26 1002 410 450 205 6932 2228

Source Max X/Q at 10 m or beyond Max X/Q at 25 m orbeyond Description San Diego SCREEN2 San Diego Coastal Inland Rural Urban Coastal 25-ft stack, 30 tps ve1oc1ty 88 59 260 289 88 25-ft stack, 75 fps velocity 24 18 82 137 24 30-ft stack, 30 fps velocity 47 43 98 205 47 30-ft stack, 75 fps velocity 18 14 46 99 18 25-ft stack with obstruction tovertical flow 364 1014 3807 1585 364 30-ft stack with obstruction to vertical flow 149 395 1688 769 149 Fugitive release outside ofa building 11614 27658 40530 22365 3776 TableJ-3 Max X/Q atorbeyond specified distances forthe Hourly Avg Period Inland 59 18 43 14 1014 395 11624 SCREEN2 Rural Urban 260 289 82 137 98 205 46 99 3759 1538 1688 769 25995 8355

Source Max X/Q at 10 m orbeyond Max X/Q at25 m orbeyond Description San Diego SCREEN2 San Diego SCREEN2 Coastal Inland Rural Urban Coastal Inland Rural Urban 25-ft stack, 30 tps ve1oc1ty 758 797 868 964 758 797 868 964 25-ft stack, 75 fps velocity 278 279 274 456 278 279 274 456 30-ft stack, 30 fps velocity 414 369 326 682 414 369 326 682 30-ft stack, 75 fps velocity 148 151 153 328 148 151 153 328 25-ft stack with obstruction to vertical flow 11635 12552 12690 5283 11635 12552 12530 5127 30-ft stack with obstruction to vertical flow 4659 5065 5627 2562 4659 5065 5627 2562 Fugitive releasE!**()lltsi~E!of** a building 134352 134977 135100 74550 134352 86607 86650 27850 Max X/Q at 50 m or beyond San Diego SCREEN2 Coasta Inland Rural Urban 51 36 69 63 15 11 22 31 28 26 26 53 11 8 12 26 190 367 842 330 96 177 450 195 877 2283 3829 813

Max X/Q at 50 m orbeyond San Diego SCREEN2 Coasta Inland Rural Urban 88 59 260 237 24 18 82 118 47 43 98 198 18 14 46 99 364 1014 3159 1239 149 395 1688 730 3776 11624 14358 3048

Max X/Q at 50 m or beyond San Diego SCREEN2 Coasta Inland Rural Urban

758 797 868 790 278 279 274 394 414 369 326 659 148 151 153 328 9691 10533 10530 4131 4659 5065 5627 2433 i 46277 47846 47860 10160



# -

### w 

# 1 1f


## "' "' 0\

:::;; Relative Dispersion Factors For Use in Scoping RiskAssessments forAutobody Shops

Meteorological Setting (1): Genericwith Rural Setting Table J-4 Scenario Source Stack Exit Exit Maximum Annual Average X/Q Values (ug/m3)/(g/s as a Function of Receptor Oistance (meters) (2) Number Type Heigh Velocity Diam. (feel) (f/s) (feet) 10 25 50 75 100 125 150 175 200 250 300 350 400 450 500 600 750 1000 1 Stack 25 30 2.5 0.0002 35 54 67 63 60 57 53 50 44 :m 3!.i 32 30 27 23**;-~,** ;.:1 2 " 25 75 2.0 0.005 16 20 22 21 19 18 15 14 13 12 12 11 10 11 12 13 13 3 " 30 30 2.5 0.00001 6 25 25 24 25 26 25 25 24 25 24 23 21 21 20 20 20 4 " 30 75 2.0 0.001 2 6 12 12 11 11 11 11 9 9 8 8 8 9 11 11 11 5 " 25 0 2.0 NA 1002 842 636 494 404 342 296 260 209 172 146 125 112 99 79 61 42 6 " 30 0 2.0 NA 228 403 395 331 287 255 229 208 175 150 130 114 101 92 75 58 41 7 FIJgltive**h=2.5'--ln<::1.~'--.!}'=0.7** 10808 6932 3829 2433 1693 1252 967 773 640 457 345 271 220 182 154 115_......J!1_ 52 Table J-5 Scenario Source Stack Exit Exit Maximum Monthly Average X/Q Values (ug/m3)/(g/s as a Function of Recejltor Distance {meters) (2) Number Type Heigh Velocity Diam. (feet) (f/s) (feet) 10 25 50 75 100 125 150 175 200 250 300 350 400 450 500 600 750 1000 1 Stack 25 30 2.5 0.001 133 202 251 237 225 212 199 187 165 147 133 120 111 102 88 94 87 2 " 25 75 2.0 0.02 59 76 82 77 73 67 56 52 47 47 45 41 38 42 47 47 48 3 " 30 30 2.5 0.00004 21 95 94 91 92 96 95 93 92 92 90 85 80 77 76 77 76 4 " 30 75 2.0 0.004 6 22 44 45 42 42 41 40 35 32 31 30 30 34 39 42 40 5 " 25 0 2.0 NA 3759 3159 2384 1851 1516 1283 1111 977 782 647 547 470 418 370 298 228 158 6 

# . 30 0 2.0 NA 854 1511 1482 1240 1077 956 860 781 657 563 489 429 380 343 281 217 154 7 Fugitive h=2.5 sx-1.4 sy=0.7 40530 25995 14358 9123 6348 4695 3627 2898 2399 1715 1295 1018 824 683 577 430 304 195 Table J-6 Scenario Source Stack Exit Exit Maximum Hourly Average X/Q Values (ug/m3)/(g/s) as a Function of Receptor Distance (meters I(2) Number Type Heigh Velocity Diam. (feet) (f/s) (feet) 10 25 50 75 100 125 150 175 200 250 300 350 400 450 500 600 750 1000 1 Stack 25 30 2.5 0.002 443 673 836 791 749 707 665 624 548 491 444 400 370 342 292 314 290 2 n 25 75 2.0 0.06 197 252 274 258 243 222 188 175 157 156 148 138 128 141 155 158 159 3 

# . 30 30 2.5 0.0001 7f 316 312 302 307 320 316 310 305 308 299 283 266 257 254 256 252 4 

# . 30 75 2.0 0.01 20 73 147 149 140 141 138 133 116 108 102 101 100 114 131 139 133 5 " 25 0 2.0 O.OE+OO 12530 10530 7948 6170 5053 4277 3702 3256 2607 2155 1822 1567 1394 1234 992 762 527 6 " 30 0 2.0 O.OE+OO 2846 5038 4940 4132 3590 3186 2867 2604 2190 1877 1630 1430 1267 1144 937 722 512 7 Fugitive h•2.5 sx•1.4 sy=0.7 135100 86650 47860 30410 21160 15650 12090 9860 7995 5715 4316 3392 2747 2277 1923 1432 1013 650

1. Tables are available for San Diego coastal and inland settings and generic meteorology (using the SCREEN2 model) for both rural and urban settings. 2. Annual and monthly values were extrapolated from hourly values using factors of0.08 and 0.3, respectively.(/l n 

# 1 1!**~**

..... 0: Scenario Number 1 2 3 4 5 6 7
Scenario Number 1 2 3 4 5 () 7
Scenario Number

2 3 4 5 6 7 Relative Dispersion Factors For Use in Scoping RiskAssessments forAutobody Shops

Meteorological Setting (1) Generic with Urban Setting Source Stack Type Heigh (feet) Stack 25

" 25 " 30 " 30 " 25 " 30 Fugitive h=2.5

Source Stack Type Heigh (feet) Stack 25

" 25


# . 30 " 30


# . 25


# . 30**Fug~** h=2.5

Source

# I Stack Type Heigh (feet) Stack 1 25 25 30 30 25 30 Fugltiveffi=2.5 Exit Velocity

(f/s) 30 75 30 75 0 0 sx=1.4

Exit Velocity

(f/s) 30 75 30 75 0 0 sx=1.4

Exit Velocity

(f/s) 30 75 30 75 0 0 sx=1.4 Exit Diam. (feet) 2.5 2.0 2.5 2.0 2.0 2.0 sy=0.7

Exit Diam. (feet) 2.5 2.0 2.5 2.0 2.0 2.0 sy=0.7

Exit Diam. (feet) 2.5 2.0 2.5 2.0 2.0 2.0 sy=0.7 10 0.00003

0.006 0.00002

0.001

NA NA 5964

10 0.0001

0.02 0.00007

0.005

NA NA**~2365**

10 0.0003**0~07** 0.0002

0.02 OJJE+OO O.OE+OO 74550 25 17 36 51 24 410 175**-~~2~**

25 289 136 191 90 1538 656 8355

25 964 454 638 301 5127 2185 27850 50 63 31 53 26 330 195 813

50 237 118 198 99 1239 730 3048

50 790 394 659 328 4131 2433 10160 Table J-7 Maximum Annual Average X/Q Values (ug/m3)/(g/s) as aFunction ofReceptorDistance (meters) (2) 75 100 125 150 175 200 250 300 350 400 450 500 49 41 36 37 38 37 32 27 22 19 16 14 25 20 16 15 18 20 21 19 17 15 14 12 41 35 27 30 32 32 29 25 21 18 16 13 21 18 14 12 15 17 18 18 16 14 13 11 249 183 137 106 84 69 48 36 28 23 19 16 179 155 125 100 82 67 48 36 28 23 19 16 420 258 176 128 98 78 53 38 29 23 19 16 Table J-8 Maximum**Monthi~** Average X/QValues (ug/m3)/(g/s as a Function ofReceptorDistance (meters) (2) 75 100 125 150 175 200 250 300 350 400 450 500 185 154 135 140 144 139 120 101 84 71 60 52 92 76 62 57 69 76 78 72 65 57 51 45 153 130 101 112 121 121 109 94 80 68 58 51 77 67 54 46 56 64 69 66 60 54 48 43 934 685 514 398 317 258 181 135 105 85 70 59 671 581 469 377 306 253 180 135 105 85 70 59 1576 968 659 480 367**.2~**L_197 144 110 88 72 61 Table J-9 MaX'irrium HourlyAverage X/QValues (ug/m3)/(g7s) as a Function ofReceptorDistance (meters} (2} 75 100 125 150 175 200 250 300 350 400 450 500 618 512 451 468 480 464 401 335 -28lr 236 202 174 308 252 206 191 231 253 259 241 216 191 169 150 511 434 338 373 403 403 364 312 265 226 194 169 257 222 180 154 186 213 230 220 201 180 161 144 3114 2283 1714 1326 1055 860 604 450 350 282 233 196 2237 1935 1563 1256 1020 842 600 450 351 283 234 197 5252 3228 2197 1601 1223 969 658 480 368 294 241 202

1. Tables are available for San Diego coastal and inland settings and generic meteorology (using the SCREEN2 model) forboth rural and urban settings. 2. Annual and monthly values were extrapolated from hourly values using factors of0.08 and 0.3, respectively. 600 750 1000 11 8 5 10 7 5 10 8 5 9 7 5 12 8 5 12 8 5 12 8 5

600 750 1000 40 29 19 36 27 18 39 28 19 35 26 18 44 31 20 44 31 20 45 31 20

600 750 1000 134 97 63 120 89 60 131 95 63 116 87 59 146 103 66 147 103 66 150 104 67



# -Cll 

### " "'0 !> 3 

### Sf

-.o -.o 

## "'

.... ::::; Scenario Number 1 2 3 4 5 6 7
Scenario Number 1 2 ;j 4 5 6 7
Scenario Number 1 2 3 4 5 6 7 

### Relative Dispersion Factors For Use in Scoping RiskAssessments forAutobody Shops

Meteorological Setting (1): San Diego Coastal Setting Table J-10 Source Stack Exit Exit MaximumAnnual Avera! e XJQ Values**(u~/m3)/(g/s)** as a Function ofReceptorDistance (meters) Type Heigh Velocity Diam. (feet) (f/s) (feet) 10 25 50 75 100 125 150 175 200 250 300 350 400 450 500 stack 25 30 2.5 NA 22 40 51 49 44 39 34 29 23 19 16 13 11 10

" 25 75 2.0 NA 0.3 3 9 13 14 15 15 14 13 11 10 9 8 7 " 30 30 2.5 NA 0.8 10 22 27 28 27 25 23 19 16 13 12 10 9 " 30 75 2.0 NA 0.004 0.7 4 7 9 10 11 11 10 9 8 8 7 6 " 25 0 2.0 NA 235 190 142 107 84 68 56 47 35 27 22 18 15 13 " 30 0 2.0 NA 54 93 96 81 68 58 49 43 33 26 21 18 15 13 Fugitive h=2.5 sx=1.4 sy=0.7 7667 2450 877 456 282 193 141 108 85 58 42 32 25 21 17 Table J-11 Source Stack Exit Exit Maximum Monthly Avera e XJQ Values {u /m3jlfg/s) as a Function ofReceptorDistance (meters) Type Heigh Velocity Diam. (feet) (f/s) (feet) 10 25 50 75 100 125 150 175 200 250 300 350 400 450 500 Stack 25 30 2.5 NA 35 68 88 85 78 69 61 54 42 34 28 24 20 18

" 25 75 2.0 0.0002 2 5 14 21 24 24 24 23 21 19 17 15 13 12
H 30 30 2.5 NA 1 17 37 46 47 46 44 40 34 28 24 21 18 16 " 30 75 2.0 0.00002 0 1 7 13 16 17 18 18 17 16 14 13 12 11 " 25 0 2.0 NA 364 294 220 165 129 104 86 72 54 42 33 27 23 20 " 30 0 2.0 NA 83 143 149 127 107 90 76 66 50 40 32 27 22 19 Fugitive h=2.5 sx-1.4 sy=0.7 11614 3776 1321 679 418 285 207 159 128 88 65 50 40 33 27 Table J-12 Source Stack Exit Exit Maximum HourlyAverage XJQ Values (ug/m3J/(g/s) as a Function ofReceptorDistance (meters (2) Type Heigh Velocity Diam. (feet) (f/s) (feet) 10 25 50 75 100 125 150 175 200 250 300 350 400 450 500 stack 25 30 2.5 NA 580 ?58 745 665 607 559 514 478 480 462 434 402 ;j/U J;j9

" 25 75 2.0 0.02 189 258 278 258 269 258 241 212 164 153 144 133 124 122 " 30 30 2.5 NA 53 305 320 401 414 393 361 327 337 335 311 284 258 243 " 30 75 2.0 0.006 15 88 147 148 144 144 139 134 122 127 125 117 112 108 " 25 0 2.0 NA 11635 9691 7280 5630 4596 3879 3350 2940 2345 1933 1630 1398 1241 1096 " 30 0 2.0 NA 2668 4659 4539 3779 3272 2895 2598 2354 1973 1684 1459 1277 1128 1017 Fugitive h=2.5 sx-1.4 sy=0.7 134352 85197 46277 29047 20020 15778 13537 11870 10581 8713 7423 6476 5751 5177 4711

1. Tables are availablefor San Diego coastal and inland settings and genericmeteorology (using the SCREEN2 model) forboth rural and urban settings. 2. The ISCSTmodel did notperform calculations in turbulentbuilding wake areas. 600 750 1000 8 6 4 6 5 3 7 5 4 5 4 3 10 7 5 10 7 5 12 __!____ 5

600 750 1000 14 10 6 I 10 8 5 12 9 6 9 7 5 I 15 10 7 15 10 7 20 14 8

600 750 1000 29;j 242 187 128 124 131 225 190 153 109 110 111 878 671 461 830 636 448 4000 3271 2522



# -

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2 3 4 5 6 7

Scenario Number
1 2 3 4 5 () 7_

Scenario Number 1 2 3 4 5 6 7 Relative Dispersion Factors For Use In Scoping RiskAssessments forAutobody Shops

Meteorological Setting (1) San Diego Inland Setting
Source

# I StaCk Type Heigh (feet) Stack 1-25 25 30 30 25 30 F(Jgitivel h=2.5

Source Stack Type Heigh (feet) Stack 25

" 25 " 30 " 30 " 25 " 30**F!Jgi~** h=2.5

Source Stack Type Heigh (feet) Stack 25



# . 25 " 30 " 30 " 25 

# . 30 Fugitive h=2.5 Exit Velocity

(f/s) 30 75 30 75 0 0 sx=1.4

Exit Velocity

(f/s) 30 75 30 75 0 0 sx=1.4

Exit Velocity

(f/s) 30 75 30 75 0 0 sx=1.4

- -- Exit Diam. (feet) 2.5 2.0 2.5**2~0** 2.0 2.0 sy=0.7

Exit Diam. (feet) 2.5 2.0 2.5 2.0 2.0 2.0 sy=0.7

Exit Diam. (feet) 2.5 2.0 2.5 2.0 2.0 2.0 !;y=0.7 10 25 0.00001 5

0.002 0.05

NA 0.7 0.0009 0.004

NA 455 NA 104 13101 5433

10 25 0.00004 10

0.007 0.4

NA 2 0.002 0.02

NA 1014 NA 232 27658 11624

10 25 0.003 558

0.1 182 0.0002 51

0.03 10 NA 12552 NA 2878 134977 86607 50 25 2 12 0.7 367 177 2283

50 45 4 25 2 820 395 4935

50 709 237 308 108 10533 5065 47846 Table J-13 Maximum AnnuafAverage X/Q Values (ug7m3)/(g/s)as a Function of ReceptorDistance**{m~~rli)**

75 I 100 125 150 175 200 250 300 350 400 450 500**36~** 36 33 30 26 23 19 16 f3 11 10 9 6 I 9 10 11 11 10 9 8 8 7 6 6 23 I 26 26 24 22 20 17 14 12 10 9 8 3 I 6 7 8 8 8 8 7 7 6 6 5 271 I 206 166 138 118 102 80 65 54 46 40 35 171 I 141 121 105 93 83 68 57 49 42 37 33 1277 I 822 576 428 331 267 183 135 103 82 67 56 Table J-14 Maximum MonthlyAvera e X/Q Values (u /m3)/(g/s) as a Function of Receptor Distance (meters)

75 100 125 150 175 200 250 300 350 400 450 500 59 56 50 44 38 34 28 23 20 27 15 14 12 17 18 18 17 16 14**1~** 11 10 9 8 41 43 41 37 33 30 24 21 18 16 14 12 7 11 13 14 14 13 12 11 10 9 8 8 607 463 372 310 264 229 179 145 121 102 90 78 384 318 272 238 210 188 154 129 109 94 82 73 2774 1793 1260 938 727**~~** 404 ' 29_Z._**22~** 182 148 124 Table J-15 Maximum HourlyAverage X/Q Values (ug/m3}/(g/sjas a Function ofReceptor Distance (meters (2) 75 100 125 150 175 200 250 300 350 400 450 500 797 667 577 509 449 406 409 384**35~** ;i52_ 342_ 327 279 261 239 228 227 219 182 161 151 138 129 142 312 303 311 320 314 317 369 368 344 314 308 295 151 148 142 143 137 131 121 124 124 119 117 120 7951 6171 5054 4277 3701 3255 2606 2154 1821 1566 1393 1233 4958 4143 3598 3192 2871 2607 2192 1878 1630 1431 1267 1144 32341 25761 21470 _18442 16187 14441 11909 10156 8869 7882 7101 6466

1. Tables are available for San Diego coastal and inland settings and generic meteorology (using the SCREEN2 model) for both rural and urban settings. 2. The ISCST model did not perform calculations in turbulent building wake areas. 600 750 1000 7 5 5 5 4 3 6 5 4 4 3 3 28 21 14 26 20 14 41 28 17

600 750 1000 12 9 7 7 6 5 11 9 9 7 6 6 62 46 31 59 44 30 90 62 39

600 750 1000 292 314 290 157 159 160 1 263 256 252 133 140 135 992 761 526 937 722 512 5495 4501 3477



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### 24 

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# • 30 fps
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# .. --o- 75 fps
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.., Inland 1\ /A I \ 

### --o- 75 fps
- San Diego l. Inland \**~** 

# • 30 .fps
- Generic**~** '». \ 

### Rural IIIli \ ----ts-- 75 fps**~** Generic 1 \ \ I 

### Rural I I •**I~** J \ \ '\. ir**~** \ 

# • 30 fps
- Generic \ 

# .. A..**~**

# -.... Urban _\...**--~,.** 1\. "ll I l.l. '\ 

## --o--- 75 fps
- Generic I :'\ l.:t lA 

# " I \ \ 1\.**~** Urban 1t II**~** 1\ \. 

# " \ I. \ 'IIIII,. r-... ( \ 

# " !--- 

# - 

# • \..**~** ---, 

# •**_,L~** \.- .'\.**~** I..)-- ). v-. 

# " \ 

# """" 10 

# '**~** ...... 1 "'I**"'-..'-'~** '- L.:>. .I**~** 

# .... • \)...

..........**,...~**...... l,J-.....


### ........ "'llr )., 

# ... )-'**~** .,g -II:::::-... .........

# .. 'Q,,..::::><""" '-'**~** f-0. 

### ....... ""---r f'( 

# ...... -...

# - !!-. l<f v-

..........**~**].."**~**

# -**.....~-**

# - :--... v 

## --. rt""[]..**~**

# -

# - ,. rv--<>- """1 

# -

# -

# - II ..

## ~~ 0 200 400 600 800 1000 

### Distance from source (m)



### September 1996 J- 

### 29 

# I

### 700.0

600.0

500.0



# - .!!! 

# s 400.0 

# - (W) 

# .E tn 

# = 

# -**~** 

### 300.0 

## ><

200.0

100.0

0.0 

### Effect of increasing exit velocity from 30 fps to 75 fps
- 30 

### ft stack
- Hourly calculation



## rr



# ... f-- 

# • 30 fps
- San Diego f-- Coastal f-- --D- 75 fps
- San Diego f-- r-- Coastal f-- 4 30 fps
- San Diego r-- Inland f-- 

## 1\ f-- 

## \ -<>-- 75 fps
- San Diego i--

### ~ Inland r-



## \ f-- Ia. 

# ... 30 fps
- Generic Rural

- 

## \ v [\_ i-- 

# ,. ----fr-- 75 fps
- Generic Rural 

## - lA


## - i \ 0 

## J.

..**~** 

# • 30 fps
- Generic Urban 

## -

-**~fl._.**

### ~**~** j**-~** 

### ---o- 75 fps
- Generic Urban**~** 

## \ 

## - 

# •• 1\-

# ""**-~**

## 1\ 

# .. .........**~ ~**  \ 

### \. 

# - 

# -**~** 

### \,**~ ~**  \ 

## \ )I**~** ......... \. "-,.... 

# "' 0 .,.__ 

## "'-.**~** [\ 

# ..., _)I "-..._h 

# r---**c~** 

### c**~** 

## ."'-. ........l'n.

# ""' I P_c**~**

## B::**~** 

# ""

....... 

# "

# • ............. 

# -**~** "<; -...... 

### :j ,J l.6-< ">-

### ~**~** (---

### r-:::--

## r---... 

# - d

## P"" --o.

## r-; 't:J:::

## 5.. 

# --**~**h .......**~**t-- 

## .__



# ..**~** 

## lkf ,___

## k>-**~**

# - -...,

# ,_-r--:

## r:::::-

# -- cv ----< 

### --r i._2 

# - 11 y 

## .gj I



# - I 

### 0 200 400 600 800 1000 Distance from source (m)



### September 1996 J- 30 

# I

### 4000

3500

3000

2500


# - .!! C) :::::' 

# - C') 

### -§, 2000 

# = 

# - a 

## >< 1500

1000

500



### 0 0 

### Effect of removing obstruction to vertical flow
- 25 

### ft stack
- Monthlycalculation



# • 30 fps
- San Diego**~** 

### Coastal
--D- 

### 0 fps
- San Diego Coastal 

### II II 

### 30 fps
- San Diego Inland**~** 

### 0 fps- San Diego Inland



# ... 30 fps
- Generic Rural II 

### \ --ts-- 0 fps
- Generic Rural 

### \**~** 

# • 30 fps
- Generic

..... 

### \ Urban 'I I 

## c 

## ... 1\ --o- 0 fps
- Generic



### \ Urban ). [.;. 

### \\ 1\**~** 

### \



### f -\ 1.-{**~\** 

# "' h 

### B.**~** 

### \. '-\.h 

# n..

t-**~-,).., ~** 



### I\-, 

### \.:.**~** Zf--.. >I\**......,'"1.~**h r'....LA -o-bt-- 

# -

# ....J!-. ""C" :'(>-..._ 1"'-

# ro.. 

# - 1--**~**Ill --.:r- h. A.**;:~ ~** 

## .... }-.'J' I 

### 200 400 

### 600 800 1000 Distance from source (m)



### September 1996 J- 

### 31 

# I

# - (tJ



### ..... 0) 

# - ..... 

# - C") 

### E



## ..... 0) ::I 

# - 0



## ..... 

## >< 1600.0

1400.0

1200.0

1000.0

800.0

600.0

400.0

200.0

0.0 f .'



### Effect of removing obstruction to**verti~al** 

### flow
- 30 

### ft stack
- Monthlycalculation



# • 30 fps
- San Diego**~** Coastal 

## ., -o-- 0 fps
- San Diego



### I Coastal 

### I 30 fps
- San Diego 

## J I Inland



### \**~** 0fps- San Diego



### i -Inland 

### 1 

# * 30 fps
- Generic 

### \ '-i Rural 1. 

### 4 -ts-- 0fps
- Generic Rural 

### \ h 

### \ 

# • 30 fps
- Generic



### \ \ · Urban 

## 0**~** [h 

### ,\ \**~** 0 fps
- Generic**~** 

### 1\.. Urban**~\** '"""\



### \ j 

### I'- \ lo....., 

# " t**~** t--

## L;JL**\~ ~**  l...!, 

### _q_**~ ~**  

### J J) lo._ 

# -..._ ,J., 

## t 

# "' l'o._**~**I-- 

# •**~** !Ll.,. 

### 0.. "'"()r--... 

# -

# - 1--



### ..!'.


# - L'--. r-1 

## ru 

# -k>- .A**l~** 

### ...:::**~** """"( t---.**~** "':': }-.. ::{).. 

# "**~** I 0 200 400 600 800 1000 Distance from source (m)



### September 1996 J- 

### 32 

# I

### a 

# x 300

250

200

100

50



### 0 0

# \ \Effect of hicreasing stack height from 25 

## ft to 30 

## ft • exit velocity 30 fps
- Monthly calculation 

# • 25 

### ft

- San Diego Coastal.


## --o- 30 

### ft

- San Diego Coastal

"""'- 

### 25 

### ft

- Sari Diego 

### 1\ Inland 

# ,**~\ ~**  

## ---<>-- 30 

### ft

- San Diego 

# \ Inland 

## 1 1\ 

# • r('l'i 

# 1\ 25 

### ft

- Generic Rural**I~ ~~**  

### --ts-- 30 

### ft

- Generic Rural 

## \ 

# \ \**~- ~**  

# • 25 

### ft

- Generic 

# J

# • \ '\ 

### Urban T 

# \ I**~ ~**  j

### ~ ..... 1\

### ~**~** 

## --o-- 30 

### ft

- Generic 

## \**~**

## ~ 

# \- Urban Ilia

..

# , \ 'hV\**~**

## [\ 

# "'ht. I ;{_ 

# r\ 1\1\. 

# '**~**

### ~

# 2:.**~ ~**  

## \**~** 

## 1'-.r-...

### ~~**~ ~** .........., 

# - Jl**~**

### ~i'.." '""'

### ~ r- 

### -**~** 

### 1'- ._.**~** 

# "b' -.,.!'...**(~**ba

### ~**~**

# ""'**~ ~** 

## ~**~**

### ~**~** 

# -**~** 

# ._**~**

### ~**~**

### ~**~**:::-

## ~-:r

# r--.r--. .} 

### -r--

# - • f 200 400 

### 600 800 Distance from source (m)



### September 1996 I- 

### 33 -,**~** 

# I I 

### 1000

# -**~** C) 

# - 

# - ('I) 

### E 

# - C) :::s 

# - 0 

# - >< 140.0

120.0

100.0

80.0

60.0

40.0

20.0

0.0 0 

# ... II

0



## I A



### 6

### Effect of**incr~asing** 

### stack height from 25 

## ft to 30 

## ft

- exit

.velocity 

### 75 fps
- Monthly calculation



# •

. 25 ft
- San Diego Coastal**~** 

### 30-ft
- San Diego**~** 

### Coastal 25 ft
- San Diego Inland**~** 

### 30 ft
- San Diego Inland 

# • 25 ft
- Generic Rural II**J~ ~**  _....**~** -fr-- 

### 30 ft
- Generic Rural 

## li \iL I ['.


## . 

## 1\\ \

# ,. h "\ 

# • 25 ft
- Generic



## q**~II** 

### ./ 

### ro_ ).

. - 

### Urban 

## \- I 

### .I\-

# """ )j

## IV 1"-,\ 

## ---o- 30 ft
- Generic

### ~

# ~- 1;>__'\ Urban 

### ·J 

### \ 

# " " ''r 

## c**~ ~** **~** """\

## t. !---"'""'

### ~

### ln. 

## f'll f'-...**~ ~** **~ ~** 

### p..._ 

## I'. !*" .....**~,1'**

### ~

### ;J r\...,

### .1}- 

### f"'-.,.**~** 

### f:::::



## IP 

# -o.:... ......**~** '-+f**~** ---..;:::**~** 

### t;J ;.> V' 

### '0['-.;
........

### ~**~** 

## IC**~** 

### .....**~** 

## r/d**~ ~** **~ ~** **~**

### 6-

...**~**

## ....... 

# "-H -v-

## r.:::::**~**

# -r-r:::::-t:-. 

# r-·o**~""** .... 200 400 600 800 1000 Distance from source (m)



### September 1996 J- 

### 34

. 

# I300



### 250

200



# -**~** tn 

### $:: C") 

# .E 150 tn :I 

# - a 

# x 100

50

0 

### Effect of**increa~ing** 

### exit velocity from 30 t'ps to 75 fps
- 25 ft 

### stack
- Monthly calculation 

# • 30 fps
- San Diego Coastal**~** 75 fps
- San Diego**~r-~+-+-~~~~~~~~~~**

I 1\ Coastal 30 fps
- San Diego Inland 

# .**~** t--H+i----'lt- --+-+--+--t--t--tr---11--1--1--t----H 

### --:---<>- 75 fps- San Diego

### ~ Inland 

# \ .,__,.,..-;-;--;---HI\.k-+-+--+-+-+--+--+--+--t--H -""'"lllo*k--- 30 fps
- Generic;: 

# i\ Rural

### i~_**~** \ \ --f::s-- 75 fps
- Generic**r;~l\~~-r~4~-+~~+-+-~~ Ru~** 

## -;--~l~·:lrl--\-H--+-+-\~-+--+-~~-+- ----4....,.......j.. --tet--- 30 fps
- Generic · · 

## \ fA.._ A..,

- - ··

### Urbar.~

### ~**i~~** 

## !\**~**

## t--fh+~+~~r+!**~--T+:-\~r....lt-t--t--tl_,""-~~--~--t----H** ---o- 75 fps
- Generic 

## \. \ ·**~** 

## r'--.-.._ · Urban 

### \ \ 1\.**:---,~** II 

### tl\
J



### ·**if~** 

### · .**~** 

### ,..__**0-..~--<">-** 

### wN1-**~r!:'**

## ..._**~!=:::--** t--. 

### /ty Vi-<>---**~1-9- ~t::::~Hi** 

0 

### 200 400 600 

### 800 

### 1000 Distance from source (m)



### September 1996 J- 

### 35 

# I

### 200.0

180.0

160.0

140.0



# - .!! 120.0 C) ::::::- 

# - C") 

# -§, 100.0 

# = 

# - 80.0

60.0

40.0

20.0

0.0 

## !

Effect of Increasing exit velocity from 30 fps to 75 fps
- 30 

## ft stack
- Monthly calculation



# ..

----•-- 30 fps
- San Diego Coastal 

### --a- 75 fps
- San Diego Coastal 

## - f-- f-- 1---



## - f-- t--+--t--+-+--+-t--+-+--t--+-+--+--i --+--- 30 fps
- San Diego f-- f-- f-- 1-- f-- 1-- 1-- f-- 1-- 1-- 1- 1-- 1-- 1--

0 II

# • \ Ia. I 1/ 1\. I \ 

## r -' \ \


### u 1\ ,..,.**·~** \**~-** \ 1\ ·111 1\ 

### ''<**I~** 1\ \ 

# " \ \

1\ t\ 1\ \P""\.

\ 

### >.**~** 1\. l"v-
\**~ h._~**  Inland 

### ---<>- 75 fps
- San Diego Inland 

## --.Jo:-- 30 fps
- Generic Rural 

### --t:s- 75 fps
- Generic Rural f-

----·-- 30 tps
- Generic Urban 

### rr- 

## ---o- 75 fps
- Generic Urban 

### rr-

.A

16 H ,.__**~** 1....1"

## r-- _..J.
- :::::,....t-- .- - ::::-

l II 1:. I r 

## r -v-r-- -r

### 200 400 600 Distance from source (m) l 

### 800 1000



### September 1996 J- 

### 36 

# I(I) 

## .g ft 

### 3 c::r (1) '"1



# - \0 \0 0\**~** I



### ...... 

# Appendix K: Detailed Results of Sample RiskAssessment

FACILITYTYPE: GENERICAUTOBODY SHOP CASE: Stack Ralncap Fugitive HEALTH RISK ASSESSMENT STACK HEIGHT (FEEn 25 25 Fugitive ASSUMPTIONS: TBACT: NO EXIT VELOCITY (FPS) 30 Downward NA ACCEPTABLE CRITERIA: ALLOWABLE CANCER RISK PER MILLION: 1.0 PARTICULATE CONTROL: YES YES NO TBACT=1 NON-TBACT=10 ANNUAL DISPERSION FACTOR: 69 1015 12616 HHI=1 HRLYMAXIMUM DISPERSION FACTOR: 868 12690 157700 MONTHLY DISPERSION FACTOR: 260 3807 47310 No. of Maximum Minimum Total AnnEmiss des Usage Usage lbslyr Acute rate ofsites Acute Annual CHEMICAL NAME reporting at any at any of39 Emission reporting Emissions Emission UNIT RISK CHRONIC ACUTE CANCER usage one site one SHe reporting Rate usageofTAC Rate Rate FACTOR REL REL M-PFACTOR ofTAC lb/yr lb/yr sHes lb/hr lb/yr g/s g/s (mA3fug) (ug/mA3) (ugJmA3) CONTR UNCONTR CADMIUM AND COMPOUNDS 0 0.0 0.0 0.0 O.OE+OO 0.0 O.OE+OO O.OE+OO 4.2E-03 3.5E+OO 1.00 1.00 CHROMIUM (HEXAVALENn 7 0.4 0.1 0.9 4.6E-06 0.13 5.8E-07 1.8E-06 1.4E-01 2.0E-03 1.01 1.03 COPPER AND COMPOUNDS 0 0.0 0.0 0.0 O.OE+OO 0.0 O.OE+OO O.OE+OO 2.4E+OO 1.0E+01 1.00 1.00 ETHYLENE GLYCOL BUTYL ETHER 0 0.0 0.0 0.0 O.OE+OO 0.0 O.OE+OO O.OE+OO 2.0E+01 1.5E+03 1.00 1.00 LEAD AND COMPOUNDS (SUB-CHRONIC} 0 0.0 0.0 0.0 O.OE+OO 0.0 O.OE+OO O.OE+OO 1.2E-05 1.5E+OO 1.5E+OO 1.00 1.00 METHANOL 12 150.6 20.6 635.3 1.7E-03 52.9 2.2E-04 7.6E-04 6.2E+02 1.00 1.00 METHYLENE CHLORIDE 3 53.8 26.3 112.1 6.1E-04 37.4 7.7E-05 5.4E-04 1.0E-06 3.0E+03 3.5E+03 1.00 1.00 NICKELAND NICKEL COMPOUNDS 0 0.0 0.0 0.0 O.OE+OO 0.0 O.OE+OO O.OE+OO 2.6E-04 2.4E-01 1.0E+OO 1.00 1.00 STYRENE• 12 327.6 25.2 1043.5 3.7E-03 67.0 4.7E-04 1.3E-03 5.7E-07 7.0E+02 1.00 1.00 TOLUENE 37 1010.3 28.8 9487.5 1.2E-02 256.4 1.5E-03 3.7E-03 2.0E+02 1.00 1.00 XYLENES 38 1879.4 18.1 12689.2 2.1E-02 333.9 2.7E-03 4.8E-03 3.0E+02 4.4E+03 1.00 1.00 ZINC AND COMPOUNDS 0 0.0 0.0 0.0 O.OE+OO 0.0 O.OE+OO O.OE+OO 3.5E+01 1.00 1.00 NOTES: Lead Is analyzed as aaubchonlc HHI using monthlydispersion values. Afactorof0.3 was used to adjust lhe SCREEN2-calculated hourlymaximum dispersion value to an assumed monthlymaximum. Afactorof0.08 was used to adjustthe SCREEN2-calculated hourtymaximum dispersion value to an assumed annual maximum. (UG/M3/G/S) (UG/M3/G/S) (UGIM3/G/S)

CHRONIC M-PFACTOR CONTR UNCONTR

16.86 38.93 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00

Seven edecenarioe were modeled. The worst-case ofthe three represenlive scenarios are presented above. For example, stackcase Is the lowerstackand lowerexit velocity, and the relncap.case Is the lowerstack.

BASIS: Acceptable emission rate fraction maybe muHiplled bythe usage rate to derive an acceptable usage which rasufts In ade minimis risk. SCREEN2 was run In the rural mode. HHI screening calculation does not Include consideration ofImpacts to specifiCtargets, and therefore, is conservative. The preliminarypotencyvalue forstyrene was Included In this analysis. Inventorydata Is from anABTF member District forthe year 1991. Acute emission rates are estimated at 10% ofthe annual usage rate atthe facilily reporting the maximum usage. Dispersion values from SCREEN2 using the rural mode. otherreported TACs used (perABTF member District Inventory) which were not evaluated: acetone methyl ethyl ketone methyl Isobutyl ketone ethyl benzene ethylene glycol monobutyl ether acetate Isopropanol propylene glycol monomethyl ehter propylene glycol monomethyl ether acetate



# -CJ') 

## .g 0 3 0"**~**

,..._ \0 \0 0\**~** I N 

# Appendix K: Detailed Results of Sample Risk Assessment (Continued)

STACK RAINCAP FUGITIVE PERCENTTAC CONTRIBUTION TO RISI< CANCER CHRONIC ACUTE& CANCER CHRONIC ACUTE& CANCER CHRONIC ACUTE& CHEMICAL NAME RISK HEALTH SUBCHRONIC RISK HEALTH SUBCHRONIC RISK HEALTH SUBCHRONIC CANCER CHRONIC ACUTE/ PER HAZARD HAZARD PER HAZARD HAZARD PER HAZARD HAZARD HHI SUBCHRONIC MILLION INDEX INDEX MILLION INDEX INDEX MILLION INDEX INDEX HHI CADMIUM AND COMPOUNDS O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO 0.0 0.0 0.0 CHROMIUM (HEXAVALEN11 1.8E+01 6.4E-02 O.OE+OO 2.7E+02 9.4E-01 O.OE+OO 3.4E+03 1.2E+01 O.OE+OO 99.5 96.1 0.0 I COPPERAND COMPOUNDS O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO 0.0 0.0 0.0 ETHYLENE GLYCOL BUTYL ETHER O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO 0.0 0.0 0.0 LEAD AND COMPOUNDS (SUB-CHRONIC O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO 0.0 0.0 0.0 METHANOL O.OE+OO 8.5E-05 O.OE+OO O.OE+OO 1.2E-03 O.OE+OO O.OE+OO 1.5E-02 O.OE+OO 0.0 0.1 0.0 METHYLENE CHLORIDE 3.7E-02 1.2E-05 1.9E-05 5.5E-01 1.8E-04 2.8E-04 6.8E+OO 2.3E-03 3.5E-03 0.2 0.0 3.5 NICKELAND NICKEL COMPOUNDS O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO 0.0 0.0 0.0 STYRENE* 4.9E-02 1.2E-04 O.OE+OO 7.2E-01 1.8E-03 O.OE+OO 9.0E+OO 2.3E-02 O.OE+OO 0.3 0.2 0.0 TOLUENE O.OE+OO 1.3E-03 O.OE+OO O.OE+OO 1.9E-02 O.OE+OO O.OE+OO 2.3E-01 O.OE+OO 0.0 1.9 0.0 XYLENES O.OE+OO 1.1E-03 5.3E-04 O.OE+OO 1.6E-02 7.8E-03 O.OE+OO 2.0E-01 9.7E-02 0.0 1.7 96.5 ZINCAND COMPOUNDS O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO O.OE+OO 0.0 0.0 0.0 TOTAL: 1.8E+01 6.6E-02 5.5E-04 2.7E+02 9.8E-01 8.1E-03 3.4E+03 1.2E+01 1.0E-01 100.0 100.0 100.0 ACCEPTABLE CRITERIA: 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 ACCEPTABLE: NO YES YES NO YES YES NO NO YES TBACT SOURCE: NO



# -

### Appendix L - Scoping Assessment "Cookbook" for Districts Following the flowchart in Appendix B, a prioritization and screening level health risk assessment was performed for a hypothetical auto bodyshop. The basic steps include: 1. Determine emission rates. 2. Complete prioritization. 3. For high priority facilities, complete risk screening. The following coating use data for a hypothetical facility was used for this example. It 

### illustrates the type of data that might be submitted on a survey form like the one m Appendix F: Table L-1 Coating Material Consumption Data 

### Coating Coating Category Use Manufacturer (gal/yr) Sherwin Williams Precoat-chromium formulation 5 Sherwin Williams Precoat-no chromium formulation 20 Sherwin Williams Primer Surfacer 60 Sherwin Williams Color Coats-Pb/Cr formulation 30 Sherwin Williams Color Coats-no Pb/Cr formulation 170 Sherwin Williams Clear coat 100 Dupont Solvent cleaner 25
Also from the survey form, we determine that all coating is applied in a closed spray booth with paper filters using an HVLP spray gun. The capture efficiency is therefore, 100%; the control efficiency is assumed to be 95%; and the fall-out fraction is 80%.
For this scoping level assessment, the generic coating profiles in Appendix E are used to determine the composition ofthe coatings used. Appropriate data from pages E-2, and E-8 through E-10 ofappendix E, are illustrated in Table L-2, below.

September 1996 L- 1 

# I

### Table L-2 Toxic Content ofCoating Products,lb/gal 

# D Precoat- Precoat- Primer Colorcoat- Colorcoat- Clearcoat Solvent Cr no Cr surfacer Pb/Cr no Pb/Cr cleaner chromeVI 0.05 0.42 Crcomp Cr comp 0.24 SrCrO-+ EGMBE 0.10 0.07 EGMBEA 0.10 0.23 0.52 ethbenzen 0.14 0.08 0.05 0.28 0.16 IPA 0.24 0.30 0.51 0.58 0.59 lead 0.69 Pb comp MEK 0.14 0.19 1.11 0.80 MeOH 0.12 0.17 0.13 MIBK 0.48 0.36 0.49 0.50 0.38 PGMEA 0.10 0.05 0.14 0.19 toluene 0.91 2.34 0.86 1.13 0.95 xylene 0.72 0.43 1.34 0.07 zinc 0.29 Zn comp


### The following equation (Equation 1, page 9) is used to determine the emissions ofvolatile organic compounds. For example, annual xylene emissions from chromium formulation precoat use are: 5 galfyr X 0.72 lb xylene;gal= 3.6 lbfyr 

### The following equation (Equation 2, page 14) 

### is used to determine emissions of solids. For example, annual hexavalent chromium emissions from chromium formulation precoat use are:
5 galfyr X 0.24lbSrCr04fgal X 0.255lbCr6flbSrCr04 X (1-0.8) X (1-0.95) = 0.0031 1 bfyr 

### and

September 1996 L- 2 

# I

### 142 galfyr X 

### 0.05 lb Crcompfgal X 

### Ilb Cr6f1 b

### Crcomp X 

### (1-0.8) X 

### (1-0.95) = 

### 0.0025 lbfyr


### Note that for screening purposes, as a worst case, it is assumed that unidentified chromium compounds are 100% hexavalent chromium. The total hexavalent chromium compound emissions from precoat use are: 0.0031lbfyr 

## + 0.0025 lbfyr 

# = 0.0056lbfyr 

### The results of similar calculations for all compounds emitted from all coatings used at the composite facility are summarized in Table L-3.
Table L-3 Toxic Emissions by Coating Product, lb/year 

# D Precoat- Precoat- Primer Colorcoat- Colorcoat- Clearcoat Solvent Cr no Cr surfacer Pb/Cr no Pb/Cr cleaner chromeVI 0.0056 0.13 EGMBE 2.0 2.1 EGMBEA 1.7 6.9 52.0 ethbenzen 2.4 1.6 3.0 8.4 16.0 IPA 4.8 18.0 15.3 58.0 15.0 lead 0.21 MEK 0.7 3.8 33.3 80.0 MeOH 7.2 5.1 13.0 MIBK 2.4 7.2 29.4 15.0 38.0 PGMEA 3.0 4.2 19.0 toluene 18.2 140.4 25.8 113.0 23.7 xylene 3.6 8.6 40.2 11.9 Zinc 0.06


### In the absence of site specific data, maximum 1-hour emission rates from the facility can be estimated by assuming a maximum ofone gallon ofmaterial is used in an hour. Hourly emiSSions are based on the highest toxic compound content in any product for each compound.

September 1996 

### L- 3 

# I

### The total emissions from the composite facility are summarized in Table L-4. 

### Table L-4 Scoping Level Emission Rates 

# I Compound 

# I pounds per year pounds perhour

chrome VI 0.14 0.0066 EGMBE 4.1 0.07 EGMBEA 60.6 0.52 ethylbenzene 31.4 0.28 IPA 111.1 0.59 lead 0.21 0.018 lb/mo MEK 117.8 1.11 methanol 25.3 0.17 MIBK 92.0 0.50 PGMEA 45.2 0.19 toluene 321.1 2.34 xylenes 64.3 1.34 zinc 0.06 0.003 

### Using default receptor proximity factor of 1 (receptor proximity of 100 meters), a priority score is calculated using the equations in Appendix I. 

### The priority score calculation is summarized in Table L-5. The calculation gives a priority score of 323.69, which is high priority. For an actual facility, the next step in the process is to determine the actual receptor proximity and refine the priority score, ifapplicable, using the receptor proximity factors in Table 1-1. For this example, it is assumed that there is a receptor within 100 meters ofthe facility, and therefore, the facility remains high priority. The dispersion modeling results tables in Table 

### 5 and/or Appendix 

### J and the toxicity data in Appendix C can be used to perform a scoping level health risk assessment. First, determine which modeling scenario best fits the facility. For this example, we will assume Scenario 5, the 25-ft stack with the raincap best matches the actual configuration of the facility. The stack is located in a rural locale. Particulate emissions are controlled. Calculations are done separately for cancer, chronic noncancer, and acute noncancer risks.

September 1996 L- 4

### Table L-5 

## W Risk Prioritization Analysis "0

...... (1) 3 0"

### ~ 

## ************************************************************************************************************************ FACILITY: Bodyshop XYX • Permit #1234 RP FACTOR: 1.000 (ARB APPROACH: 99 METERSI LOCATION: Anywhere, CA COMPliANCE ADJUSTMENT: 1.0

### ~ 

## ************************************************************************************************************************ I.D 0\

r-' I IJI POLLUTANTS WITH ESTABLISHED AB 2566 TOXICITY DATA ANNUAL ANNUAL CHRONIC CHRONIC ACUTE ACUTE ACUTE MAX EMISSIONS UNIT RISK CARCINOGEN EMISSIONS AEL NONCARC EMISSIONS AEL NONCARC NONCARC POLLUTANT Ub/yrl b•g/m31·1 SCORE Ublhrl btg/m31 SCORE Ublhrl (f1g/m31 SCORE SCORE Chromium lhex.l 0.14 .14E+00 33.32 0.0000 .20E · 02 1.6441 0.0066 .OOE+OO 0.0000 1.5441 Ethylglycbutyl eth 4.1 .OOE+OO .00 0.0005 .20E+02 0.0035 0.0"/00 .16E+04 0.0700 0.0700 Ethylbenzene 31.4 .OOE+OO .00 0.0036 .10E+04 0.0005 0.2800 .OOE+OO 0.0000 0.0005 Isopropanol 111.1 .OOE+OO .00 0.0127 .OOE+OO 0.0000 0.6900 .49E+06 0.0181 0.0181 Lead 0.21 .12E • 04 .00 0.0000 .15E+01 0.0024 0.0580 .OOE+OO 0.0000 0.0024 MEK 117.6 .OOE+OO .00 0.0134 .10E+04 0.0020 1.1100 .12E+05 0.1386 0.1386 Methanol 25.3 .OOE+OO .00 0.0029 .62E+03 0.0007 0.1700 .26E+05 0.0091 0.0091 Toluene 321.1 .OOE+OO .00 0.0367 .20E+03 0.0275 2.3400 .37E+05 0.0949 0.0949 Xylenes 64.3 .OOE+OO .00 0.0073 .30E+03 0.0037 1.3400 .44E+04 0.4568 0.4568 Zinc 0.06 .OOE+OO .00 0.0000 .35E+02 0.0000 0.0030 .OOE+OO 0.0000 0.0000 POLLUTANTS WITHOUT ESTABLISHED AB 2566 TOXICITY DATA Ethglybutethac 60.6 MIBK 92.0 Propglymethethac 45.2 

## ************************************************************************************************************************

TOTAL CARCINOGENIC SCORE == 33.32 TOTAL NONCARCINOGENIC SCORE== 2.33 TOTAL FACILITY TOXICS SCORE == 33.32 

## ************************************

TOTAL CARCINOGENIC EMISSIONS== TOTAL 03 DEPLETER EMISSIONS == TOTAL APPENDIX A-1 EMISSIONS== 0.35 LB/YR .00 LB/YR 873.31 LB/YR 

## ******************* --> TS**~** 10.: HIGH FACILITY RISK ASSESSMENT PRIORITY 

## ***** HIGH 

## ***** ····> 1.0**~** TS < 10.: INTERMEDIATE 

## ******************* ····> TS < 1.0: LOW



# -

### Cancer Risk Equation 4, page 26, is used to calculate the lifetime excess cancer risk.
From Table 

### 5, the maximum annual relative dispersion factor at or beyond 

### 10 m from the source for Scenario 5 

### is 1.5 

### x 10-2 !-Lg/m3 

### per lb/yr for a rural area. This is multiplied by the actual annual emissions from the facility in grams per second to determine the annual average concentration of each compound. The annual average concentration of each compound is multiplied by the unit risk factor and multipathway factor as appropriate.
Note that use of preliminary potency values is at the discretion of the District. This is illustrated in Table L-6. Chronic noncancer Equation 

### 5, page 27, is used to calculate the noncancer chronic hazard index.
From Table 

### 5, the maximum annual relative dispersion factor at or beyond 10 m from the source for Scenario 5 is 1.5 x 10-2 !lgfm3 

### per lb/yr for a rural area. This is multiplied by the actual annual emissions from the facility to determine the annual average concentration of each compound. The annual average concentration of each compound is multiplied by the multipathway factor and divided by the reference exposure level as appropriate. This is illustrated in Table L-7.
Acute noncancer Equation 6, page 28, is used to calculate the noncancer acute hazard index.
From Table 

### 5, the maximum 1-hour relative dispersion factor at or beyond 10 m from the source for Scenario 5 is 1.6 x 

### 103 !lgfm3 

### per lb/hr for a rural area. This is multiplied by the actual maximum hourly emissions from the facility to determine the maximum 1-hour concentration of each compound. The maximum 1-hour concentration of each compound is divided by the reference exposure level as appropriate. Note that use ofproposed REL values is at the discretion ofthe District. This is illustrated in Table L-8.
For lead, the maximum monthly relative dispersion factor at or beyond 

### 10 m from the source for Scenario 5 

### is 0.667 !lgfm3 

### per lb/hr for a rural area. This is multiplied by the monthly lead emissions from the facility to determine the maximum 30-day concentration of lead. The maximum 30-day concentration of lead is divided by the reference exposure level. This is also illustrated in Table L-8.

September 1996 L- 6 

# I

## Table L-6. Example Carcinogenic Risk Calculation

DIRECTIONS: 1. Select source description scenario number (from Table below) which bestfits facility exit characteristics: 2. Select (circle) either Rural or Urban mode to fit locality: RURAL or URBAN 3. SelectX/Q values (below) for source description and mode. Source Description Max X/Q in lb/yr Stack Exit Rural Urban No. Height Vel. (feet) (fps) 1 25 30 1.0E-03 1.1E-03 2 30 30 3.8E-04 7.9E-04 3 25 75 3.2E-04 5.2E-04 4 30 75 1.8E-04 3.8E-04 5 25 Raincap 1.5E-02 6.1E-03 6 30 Raincap 6.5E-03 3.0E-03 7 Fugitive Fugitive 1.8E-01 1.3E-01 4. Transfer appropriate X/Q values and emission rates into table below. 5. Identify source as controlled or uncontrolled: CONTROLLED or UNCONTROLLED 6. Multiply emission rate, X/Q, unit risk factor and multipathwayfactor (eithercontrolled oruncontrolled) foreach toxicant. List product as Individual Excess Cancer Risk. 7. Sum Individual Excess Cancer Risk for each toxicant and record in summation box. 8. Compare sum to District's acceptable criteria. Ifthis is exceeded, a refined risk assessmentshould be considered.

TOXICITY DATA FOR CANCER**EVALUATION~** CHEMICAL EMISSION X/Q PRELIM. CHEMICAL NAME ABSTRACT RATE (ug/m3 UNIT RISK POTENCY MULTIPATHWAY NUMBER (lblyr) per FACTOR VALUE (1) FACTOR (2) lb/yr) (mA3/ug) (mA3/ug) CONTR CADMIUM AND COMPOUNDS 7440-43-9 1.5E-02 4.2E-03 NA 1.00 CHROMIUM (HEXAVALENn 18540-29-9 0.1 1.5E-02 1.4E-01 NA 1.01 LEAD AND COMPOUNDS 7439-92-1 0.2 1.5E-02 1.2E-05 NA 1.00 METHYLENE CHLORIDE 75-09-2 1.5E-02 1.0E-06 NA 1.00 NICKELAND NICKEL COMPOUNDS 7440-02-0 1.5E-02 2.6E-04 NA 1.00 SUMMATION FOR ALL TOXICANTS NOTES: 1. Preliminary potency values should be used atthe discretion ofthe District. 2. Multipathway factors are the ratio ofthe total risk to inhalation risk. These have been developed using HRA92, version 1.1, a multipathway exposure model developedjointly by the California Air Resources Board and the Office of Environmental Health Hazard Assessment. Assumptions and parameters used to develop the the multipathway factors include: Emission rate = 1g/s XIQ = 1 Deposition velocity= 0.02 mlsfor controlled sources and 0.05 m/s for

uncontrolled sources 70-year exposure Fraction of homegrown fruits and vegetables consumed= 10% Pathways/sources include inhalation, ingestion ofsoil (pica), homegrown vegetables,

mother's milk (for one year) and skin contact. References: CAPCOA 1993 and OEHHA, AirTaxies Hot Spots Program RiskAssessmentGuidelines Part 1:

Evaluation ofAcute Non-Cancer Health Effects, Draft for Public Comment, December 1994.

September 1996 L-7 UNCONTR 1.00 1.03 1.00 1.00 1.00 

# I

INDIV EXCESS CANCER

RISK O.OOE+OO 2.97E-04 3.78E-08 O.OOE+OO O.OOE+OO 2.97E-04DIRECTIONS: 

## Table L-7. Example Non-Cancer Chronic Health Hazard Index Evaluation

1. Select source description scenario number (from Table below) which best frts facility exit characteristics: 2. Select (circle) either Rural or Urban mode to frt locality: RURAL or URBAN 3. Select XJQ values (below) for source description and mode.
--- Source Descriotion Max XJQ in lblvr Stack Exit Rural Urban No. Height Vel. (feet) (fps) 1 25 30 1.0E-03 1.1E-03 2 30 30 3.8E-04 7.9E-04 3 25 75 3.2E-04 5.2E-04 4 30 75 1.BE-04 3.BE-04 5 25 Raincap 1.5E-02 6.1E-03 6 30 Raincap 6.5E-03 3.0E-03 7 Fugitive Fugitive 1.BE-01 1.3E-01 4. Transfer appropriate XJQ values and emission rates intotable below. 5. Identify source as controlled or uncontrolled: CONTROLLED or UNCONTROLLED 6. Foreach toxicant, multiply emission rate, XJQ, and mullipathwayfactor (eithercontrolled oruncontrolled).

Dividethat product bythe REL foreach toxiCant. Ust product as Chronic Health Hazard Index. 7. Sum Hazard Index foreach toxicant and record in summation box. B. Compare sum to District's acceptable criteria. Ifsummation exceeds 1, sum individually

foreach toxic endpoint and record maximum endpoint and endpoint-specific HHI. Ifvalue exceeds 1, a refined risk assessment should be considered.
TOXICITY DATA FOR NON-CANCER CHRONIC EVALUATIONS CHEMICAL EMISSION XJQ SYSTEM OR ORGAN EFFECTED CHEMICAL NAME ABSTRACT RATE (ug/m3 MULTIPATHWAY CV/ CNS/ IMMU KIDN Gil REPRO NUMBER (lblyr) per REL FACTOR (1) BL PNS LV lb/vrl I(uq/111"3) CONTR UNCONTR CADMIUM AND COMPOUNDS 7440-43-9 1.5E-02 3.5E+OO 16.86 38.93 X CHROMIUM (HEXAVALENn 18540-29-9 0.1 1.5E-02 2.0E-03 1.00 1.00 X X COPPER AND COMPOUNDS 7440-50-8 1.5E-02 2.4E+OO 1.00 1.00 ETHYLENE GLYCOL (MONO)- 111-76-2 4 1.5E-02 6.4E+01 1.00 1.00

BUTYL ETHER ETHYL BENZENE 100-41-4 31 1.5E-02 1.0E+03 1.00 1.00 X LEAD AND COMPOUNDS 7439-92-1 0.2 1.5E-02 1.5E+OO 1.00 1.00 X X X X X METHYL ETHYL KETONE 78-93-3 117.8 1.5E-02 1.0E+03 1.00 1.00 X METHANOL 67-56-1 25 1.5E-02 6.2E+02 1.00 1.00 X METHYLENE CHLORIDE 75-09-2 1.5E-02 3.0E+03 1.00 1.00 X X NICKEL AND NICKEL COMPOUNDS 7440-02-0 1.5E-02 2AE-01 1.00 1.00 X X PROPYLENE GLYCOL (MONO)- 107-98-2 1.5E-02 2.0E+03 1.00 1.00 X METHYL ETHER STYRENE 100-42-5 1.5E-02 7.0E+02 1.00 1.00 X TOLUENE 108-BB-3 321 1.5E-02 2.0E+02 1.00 1.00 X X XYLENES (M.O,P ISOMERS\ 1210 64 1.5E-02 3.0E+02 1.00 1.00 X ZINC AND COMPOUNDS 7440-66-6 0.1 1.5E-02 3.5E+01 1.00 1.00 X RESP

X X X

X

X X SUMMATION FOR ALL TOXICANTS NOTES: 1 . Mullipathwayfactors are the ratio ofthe total risk to inhalation risk. These have been

developed using HRA92, version 1.1, a muitipathway exposure model developed jointly bythe California Air Resources Board and the Office of Environmental Heaith Hazard Assessment. Assumptions and parameters used to develop thethe muitipathway factors include: Emission rate = 1g/s XJQ = 1 Deposition velocity =0.02 m/s for controlled sources and 0.05 m/s for

uncontrolled sources 70-yearexposure Fraction of homegrown fruits and vegetables consumed

### = 10% Pathways/sources include inhalation, ingestion ofsoil (pica), homegrown vegetables,

mother's milk (for one year) and skin contact. 2. A mullipathway factor of 1.00 should be used to calculate the non-cancer chronic hazard index forthe respiratory endpoint. 3. NA =Not available. PRIMARY TOXIC ENDPOINT

4. Values in brackets [ ] are proposed and are for informational purposes. Several ofthe revised acute RELs are higherthan the previous values meaning that the acute HHI

forthe chemical will decrease. The numbers are not official until after Scientific Review Panel review and adoption by OEHHA. References: CAPCOA 1993 and OEHHA, AirToxics Hot Spots Program Risk Assessment Guidelines Part 1:

Evaluation ofAcute Non-Cancer Health Effects, Draft for Public Comment, December 1994.

September 1996 L-8 

# I

CHRONIC HEALTH HAZARD INDEX 0.0000 1.0500 0.0000 0.0010 0.0005 0.0021 0.0018 0.0006 0.0000 0.0000 0.0000 0.0000 0.0241 0.0032 0.0000 1.0532 RESP

# Table L-8. Example Non-CancerAcute Health Hazard Index Evaluation

DIRECTIONS: 1. Select source description scenario number (from Table below) which bestfits facility exit characteristics: 2. Select (circle) either Rural or Urban modeto fit locality: RURAL or URBAN 3. SelectX/Q values (below) for source description and mode. Source Description MaxX/Q in lb/hr Max X/Q in lb/mo Stack Exit Rural Urban Rural Urban No. Height Vel. (feet) (fps) 1 25 30 110 122 0.046 0.051 2 30 30 41 86 0.017 0.036 3 25 75 35 58 0.014 0.024 4 30 75 19 41 0.008 0.017 5 25 Raincap 1603 667 0.667 0.278 6 30 Raincap 711 324 0.296 0.135 7 Fugitive Fugitive 19918 14626 8.287 6.085 4. Transfer appropriate X/Q values and emission rates into table below. Use the monthly X/Q value and maximum monthly emission rate (lb/mo) for lead only. 5. Identify source as controlled or uncontrolled: CONTROLLED or 6. Foreach toxicant, multiply emission rate, and X/Q. Dividethat product bythe REL for each toxicant. List product as Acute Health Hazard Index. 7. Sum Hazard Indexforeach toxicant and record in summation box. 8. Compare sum to District's acceptable criteria. Ifsummation exceeds 1, sum individually foreach toxic endpoint and record maximum endpoint and endpoint-specific HHI. Ifvalue exceeds 1, a refined risk assessment should be considered. UNCONTROLLED

EMISSION TOXICITY DATA FORACUTE EVALUATIONS CHEMICAL RATE X/Q TOXIC ENDPOINT OR TARGET ORGAN CHEMICAL NAME ABSTRACT (lblhr) (ug/m3 ACUTE CNS/ IMMUN REPRO RESP EYE NUMBER (lb/mo per REL PNS DEVL for lead) lblhr) (ugfmA3) COPPERAND COMPOUNDS 7440-50-8 1603 1.0E+01 X [1.0E+21 ETHYLENE GLYCOL 111-76-2 0.1 1603 1.5E+03 X X

(MONO)BUTYL ETHER [5.5E+3) (BUTYL CELLOSOLVE, 2-BUTOXYETHANOL) ISOPROPANOL 67-63-0 0.6 1603 [4.9E+41 X X LEAD AND COMPOUNDS 7439-92-1 0.00 0.667 1.5 (2) X METHANOL 67-56-1 0.2 1603 [2.8E+41 X METHYLENE CHLORIDE 75-09-2 1603 3.5E+03 X [8.3E+4) METHYL ETHYL KETONE 78-93-3 1.1 1603 [1.2E+41 X NICKELAND NICKEL COMPOUNDS 7440-02-0 1603 1.0E+OO X [3.3E+Ol STYRENE 100-42-5 1603 l2.2E+4]. X X TOLUENE 108-88-3 2.3 1603 [3.7E+41 X XYLENES (M,O,P ISOMERS) 1210 1.3 1603 4.4E+03 X [2.2E+31 SUMMATION FOR ALL TOXICANTS PRIMARY TOXIC ENDPOINT NOTES: 1. Values in brackets [ ) are proposed and are for informational purposes. Several ofthe revised acute RELs are higherthan the previous values meaning thatthe acute HHI forthe chemical will decrease. The numbers are not official until after Scientific Review Panel review and adoption by OEHHA. 2. Lead should be evaluated as a sub-chronic or30-day exposure. References: CAPCOA 1993 and OEHHA, AirTaxies Hot Spots Program Risk Assessment Guidelines Part 1: Evaluation ofAcute Non-Cancer Health Effects, Draft for Public Comment, December 1994.

September 1996 L-9 

# I

ACUTE HEALTH HAZARD

INDEX

0.075

0.019 0.001 0.010

0.148

0.101 0.488 0.832 RESP

### In many Districts, the calculated risks would be considered significant. These risks were, however, based on the maximum relative dispersion factors at or beyond 10 meters from the source. An initial refinement of the screening assessment would be to determine the actual minimum distance from the stack to the property line or the nearest actual receptor. Ifthis distance is greater than 10 meters, screening level risks could be calculated based on the actual receptor distance using the relative dispersion factors in Appendix J, Tables J-4 through J-9 instead of the values in Table 5. Additionally, before requiring public notification, the Guidelines suggest that the scoping level risk assessment be refined by determining site specific emission data, using site specific release data, and using actual local meteorological data. A refined health risk assessment is beyond the scope of this example. Calculations may be facilitated by use of tables, either hardcopy or in a spreadsheet, similar to the example Tables L-6 through L-8. Blank copies ofthese table are Tables L-9 through L-11. After appropriate refinement and finalization ofthe emissions and release data, it should be submitted to CARB. The format for data submittal is described in Appendix K.

September 1996 L- 10 

# I

## Table L-9. Carcinogenic Risk Worksheet

DIRECTIONS: 1. Select source description scenario number (from Table below) which best fits facility exit characteristics: 2. Select (circle) either Rural or Urban modeto fit locality: RURAL or URBAN 3. SelectX/Q values (below) for source description and mode. Source Description MaxX/Q in lb/yr Stack Exit Rural Urban No. Height Vel. (feet) (fps) 1 25 30 1.0E-03 1.1E-03 2 30 30 3.8E-04 7.9E-04 3 25 75 3.2E-04 5.2E-04 4 30 75 1.8E-04 3.8E-04 5 25 Raincap 1.5E-02 6.1E-03 6 30 Raincap 6.5E-03 3.0E-03 7 Fugitive Fugitive 1.8E-01 1.3E-01 4. Transfer appropriateX/Q values and emission rates into table below. 5. Identify source as controlled or uncontrolled: CONTROLLED or UNCONTROLLED 6. Multiply emission rate, XIQ, unit risk factor and multipathway factor (either controlled or uncontrolled) for each toxicant. List product as Individual Excess Cancer Risk. 7. Sum Individual Excess Cancer Risk for each toxicant and record in summation box. 8. Compare sum to Districfs acceptable criteria. Ifthis is exceeded, a refined risk assessmentshould be considered.

TOXICITY DATA FOR CANCER EVALUATIONS CHEMICAL EMISSION X/Q PRELIM. CHEMICAL NAME ABSTRACT RATE (ug/m3 UNIT RISK POTENCY MULTIPATHWAY NUMBER (lb/yr) per FACTOR VALUE (1) FACTOR (2) lb/yr) (m"3/uq) (m"3/uq) CONTR CADMIUM AND COMPOUNDS 7440-43-9 4.2E-03 NA 1.00 CHROMIUM_(HEXAVALENn 18540-29-9 1.4E-01 NA 1.01 LEAD AND COMPOUNDS 7439-92-1 1.2E-05 NA 1.00 METHYLENE CHLORIDE 75-09-2 1.0E-06 NA 1.00 NICKELAND NICKEL COMPOUNDS 7440-02-0 2.6E-04 NA 1.00 SUMMATION FOR ALL TOXICANTS NOTES: 1. Preliminary potency values should be used atthe discretion ofthe District. 2. Multipathway factors are the ratio ofthe total risk to inhalation risk. These have been developed using HRA92, version 1.1, a multipathway exposure model developedjointly by the CaliforniaAir Resources Board and the Office ofEnvironmental Health Hazard Assessment. Assumptions and parameters used to developthethe multipathway factors include: Emission rate = 1 g/s XIQ

## =1 Deposition velocity = 0.02 m/s for controlled sources and 0.05 m/s for

uncontrolled sources 70-year exposure Fraction ofhomegrown fruits and vegetables consumed= 10% UNCONTR 1.00 1.03 1.00 1.00 1.00

Pathways/sources include inhalation, ingestion ofsoil (pica), homegrown vegetables,

mother's milk (for one year) and skin contact. References: CAPCOA 1993 and OEHHA, AirToxics Hot Spots Program Risk Assessment Guidelines Part 1:

Evaluation ofAcute Non-Cancer Health Effects, Draft for Public Comment, December 1994.

September 1996 L-11 

# I

INDIV EXCESS CANCER

RISKDIRECTIONS: 

## Table L-10. Non-Cancer Chronic Health Hazard Index Worksheet

1. Select source description scenario number (from Table below)which bestfits facility exitcharacteristics: 2. Select (circle) either Rural or Urban modetofit locality: RURAL or URBAN 3. SelectX/Q values (below) forsource description and mode.
--- Source Description MaxX/Q in lb/yr Stack Exit Rural Urban No. Height Vel. (feet) (fps) 1 25 30 1.0E-03 1.1E-03 2 30 30 3.8E-C4 7.9E-04 3 25 75 3.2E-C4 5.2E-04 4 30 75 1.8E-04 3.8E-04 5 25 Raincao 1.5E-02 6.1E-03 6 30 Raincao 6.5E-03 3.0E-03 7 Fugitive Fugitive 1.8E-01 1.3E-01
4. TransferappropriateX/Q values and emission rates into table below. 5. Identify source as controlled or uncontrolled: CONTROLLED or UNCONTROLLED 6. For each toxicant, multiply emission rate, X/Q, and multipathway factor (eithercontrolled or uncontrolled). Divide that product by the REL for each toxicant List productas Chronic Health Hazard Index. 7. Sum Hazard Indextoreach toxicant and record in summation box. 8. Compare sum to District's acceptable criteria. Ifsummation exceeds 1, sum individually

foreach toxic endpointand record maximum endpointand endpoint-specific HHI. Ifvalue exceeds 1, a refined risk assessment should beconsidered.
TOXICITY DATA FOR NON-CANCER CHRONIC EVALUATIONS CHEMICAL EMISSION X/Q SYSTEM OR ORGAN EFFECTED CHEMICAL NAME ABSTRACT RATE (ug/m3 MULTIPATHWAY CV/ CNS/ IMMU KIDN Gil REPR NUMBER (lb/yr) per REL FACTOR (1) BL PNS LV 11)/yr) (ug/mA3) CONTR UNCONTR CADMIUMAND COMPOUNDS 7440-43-9 3.5E+OO 16.86 38.93 X CHROMIUM (HEXAVALENn 18540-29-9 2.0E-03 1.00 1.00 X X COPPER AND COMPOUNDS 7440-50-8 2.4E+OO 1.00 1.00 ETHYLENE GLYCOL (MONO)- 111-76-2 2.0E+01 1.00 1.00 X

BUTYL ETHER ETHYL BENZENE 100-41-4 1.0E+03 1.00 1.00 X LEADAND COMPOUNDS 7439-92-1 1.5E+OO 1.00 1.00 X X X X X METHYL ETHYL KETONE 78-93-3 1.0E+03 1.00 1.00 X METHANOL 67-56-1 6.2E+02 1.00 1.00 X METHYLENE CHLORIDE 75-09-2 3.0E+03 1.00 1.00 X X NICKELAND NICKEL COMPOUNDS 7440-02-0 2.4E-01 1.00 1.00 X X PROPYLENE GLYCOL (MONO) 107-98-2 2.0E+03 1.00 1.00 X METHYL ETHER STYRENE 100-42-5 7.0E+02 1.00 1.00 X TOLUENE 108-88-3 2.0E+02 1.00 1.00 X X XYLENES (M O,P ISOMERS) 1210 3.0E+02 1.00 1.00 X ZINCAND COMPOUNDS 7440-66-6 3.5E+01 1.00 1.00 X RESP

x_m_

X X X

X

X X SUMMATION FORALL TOXICANTS
NOTES: 1. Multipathwayfactors arethe ratio ofthe total risk to inhalation risk. These have been

developed using HRA92, version 1.1, a multipathway exposure model developedjointly by the CaliforniaAir Resources Board and the Office of Environmental Health Hazard Assessment. Assumptions and parameters used to develop the the multipathway factors include: Emission rate = 1 g/s X/Q

### =1 Deposition velocity= 0.02 misfor controlled sources and 0.05 m/s for

uncontrolled sources 70-yearexposure Fraction ofhomegrown fruits and vegetables consumed = 10% Pathways/sources indude inhalation, ingestion ofsoil (pica), homegrown vegetables,

mother's milk (foroneyear) and skin contact. 2. A multipathway factor of 1.00 should be used to calculate the non-cancerchronic hazard index forthe respiratory endpoint. References: CAPCOA 1993 and OEHHA. AirToxics Hot Spots Program Risk Assessment Guidelines Part 1:

Evaluation ofAcute Non-Cancer Health Effects. Draftfor Public Comment, December 1994.

September I 996 L-12 PRIMARYTOXIC ENDPOINT 

# I

CHRONIC HEALTH HAZARD INDEX

# Table L-11. Non-CancerAcute Health Hazard Index Worksheet

DIRECTIONS: 1. Select source description scenario number (from Table below) which bestfits facility exit characteristics: 2. Select (circle) either Rural or Urban modeto fit locality: RURAL or URBAN 3. Select XJQ values (below) for source description and mode. Source Description MaxXJQ in lb/hr MaxXJQ in lb/mo Stack Exit Rural Urban Rural Urban No. Height Vel. (feet) (fps) 1 25 30 110 122 0.046 0.051 2 30 30 41 86 0.017 0.036 3 25 75 35 58 0.014 0.024 4 30 75 19 41 0.008 0.017 5 25 RaincaQ 1603 667 0.667 0.278 6 30 Raincao 711 324 0.296 0.135 7 Fugitive Fugitive 19918 14626 8.287 6.085 4. Transferappropriate XJQ values and emission rates into table below. Use the monthly XJQ value and maximum monthly emission rate (lb/mo) for lead only. 5. Identify source as controlled or uncontrolled: CONTROLLED or 6. Foreach toxicant, multiply emission rate, and XJQ. Divide that product by the REL foreach toxicant. List product as Acute Health Hazard Index. 7. Sum Hazard Indexforeach toxicant and record in summation box. 8. Compare sum to District's acceptable criteria. Ifsummation exceeds 1, sum individually for each toxic endpoint and record maximum endpoint and endpoint-specific HHI. Ifvalue exceeds 1, a refined risk assessment should be considered. UNCONTROLLED

EMISSION TOXICITY DATA FORACUTE EVALUATIONS CHEMICAL RATE XJQ TOXIC ENDPOINT OR TARGETORGAN CHEMICAL NAME ABSTRACT (lb/hr) (ug/m3 ACUTE CNS/ IMMUN REPRO/ NUMBER (lblmo per REL PNS DEVL forlead) lb/hr) (uq/m"3) COPPER AND COMPOUNDS 7440-50-8 1.0E+01 [1.0E+2J ETHYLENE GLYCOL 111-76-2 1.5E+03 X

(MONO)BUTYL ETHER [5.5E+3] (BUTYL CELLOSOLVE, 2-BUTOXYETHANOLl ISOPROPANOL 67-63-0 [4.9E+4] LEAD AND COMPOUNDS 7439-92-1 1.5 (_2J X METHANOL 67-56-1 [2.8E+4] X METHYLENE CHLORIDE 75-09-2 3.5E+03 X j8.3E+'li METHYL ETHYL KETONE 78-93-3 [1.2E+4] NICKELAND NICKEL COMPOUNDS 7440-02-0 1.0E+OO X [3.3E+01 STYRENE 100-42-5 [2.2E+4] TOLUENE 108-88-3 [3.7E+4] XYLENES (M,O,P ISOMERS) 1210 4.4E+03 [2.2E+31 SUMMATION FOR ALL TOXICANTS PRIMARY TOXIC ENDPOINT NOTES: 1. Values in brackets ( ] are proposed and are for informational purposes. Several ofthe revised acute RELs are higherthan the previousvalues meaning that the acute HHI for the chemical will decrease. The numbers are not officialWllil after Scientific Review Panel review and adoption by OEHHA. 2. Lead should be evaluated as a sub-chronic or30-day exposure. References: CAPCOA 1993 and OEHHA, AirTaxies Hot Spots Program Risk Assessment Guidelines Part I: Evaluation ofAcute Non-CancerHealth Effects, Draft for Public Comment, December 1994.

September 1996 L-13 RESP EYE

X
X

X X

X

X X X X 

# I

ACUTE HEALTH HAZARD

INDEX