1 OM B Control No. 2060 - NEW Approval expires XX/XX/XX The public reporting and recordkeeping burden for this collection of information is estimated to average 47 hours per response. Send comments on the Agency's need for this information, the accuracy of the provided burden estimates, and any suggested methods for minimizing respondent burden, including through the use of automated collection techniques to the Director, Collection Strategies Division, U.S. Environmental Protection Age ncy (2822T), 1200 Pennsylvania Ave., N W, W ashington, D.C. 20460. Include the OMB control number in any correspondence. Do not send the completed survey to this address. 

## ENCLOSURE 1 AE ROSP AC E MA NUFACTURING A ND REWORK INDUSTRY INFORM AT ION REQUEST QUEST IONNAIRE INSTRUCTIONS FOR COMPLETING THE QUESTIONNAIRE I. Introduction This information request is to be completed for operations that comprise the Aerospace Manufacturing and Rework source category at your facility. The Aerospace Manufacturing and Rework source category includes any facility engaged, either in whole or in part, in the manufacture or rework of commercial, civil, or military aerospace vehicles or components . Aerospace vehicle or component means any fabricated part, processed part, ass embly of parts, or completed unit, with the exception of electronic components, of any aircraft including but not limited to airplanes, helicopters, missiles, rockets, and space vehicles. The North American Industrial Classification System (NAICS) codes t hat describe facilities that may manufacture or rework aerospace vehicles, components, or parts are listed in Table 1 below . This table is not meant to be exhaustive; facilities classified under other NAICS codes may also be required to complete this info rmation request if they perform activities as defined above . The reporting year for this information request is 2008. If you cannot provide 2008 data, you must contact Kim Teal of the U.S. EPA at 919 - 541 - 5580 or tea l.kim@epa.gov prior to completing this information request to explain why 2008 data are not available and obtain permission to submit data from another year.2

Table 1. North American Industrial Classification System Codes for the

Ae rospace Manufacturing and Rework Industry NAICS Code Description 336411 Aircraft Manufacturing 336412 Aircraft Engine and Engine Parts Manufacturing 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 336414 Guided Miss i le and Space Vehicle Manufacturing 336415 Guided Missile and Space Vehicle Propulsion Units and Propulsion Units Parts Manufacturing 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing 481111 Scheduled Passenger Air Transportation 481112 Scheduled Freig ht Air Transportation 481211 Nonscheduled Chartered Passenger Air Transportation 481212 Nonscheduled Chartered Freight Air Transportation 481219 Other Nonscheduled Air T ransportation You must complete this information request for AL L manufacturing op erations that constitute aerospace manufacturing and rework at your facility, regardless of whether the operations are presently regulated under the National Emission Standards for Hazardous Air Pollutants for Aerospace Manufacturing and Rework Facilities (aerospace NESHAP). For example, information must be submitted for the following operations even though they are not regulated by the aerospace NESHAP: chemical milling, metal finishing, electrodeposition, composites processing , manufacture of aircraft t ransparencies, and wastewater operations , among others. Additionally, you must submit information for operations that may be exempted from regulation under the aerospace NESHAP including, but not limited to, low volume usage coatings, activities associate d with the manufacture or rework of space vehicles, certain waterborne coatings, certain cleaning operations, certain primer and topcoat operations, and certain depainting operations. Finally, you must submit information where control requirements are not specified for operations under the aerospace NESHAP, including the use of specialty coatings, adhesives, adhesive bonding primers, or sealants . However, this information request does not apply to aerospace manufacturing or rework operations that are re gulated under NESHAP other than the aerospace NESHAP , with the exception of halogenated solvent cleaning . For example, you should not include in3

your response information regarding chromium electroplating operations regulated under the chromium electropla ting NESHAP . Please complete the forms included in this attachment for all of the operations subject to this request and return them to: U.S. Mail: Ms. Kim Teal

U.S. EPA Mailroom (E143 - 03) United States Environmental Protection Agency Office of Air Qual ity Planning and Standards Research Triangle Park, NC 27711 Express Mail:

Ms. Kim Teal U.S. EPA Mailroom (E143 - 03) 109 T. W. Alexander Drive Research Triangle Park, NC 27709 The questionnaire forms contained in this attachment are also available in el ectronic format (Excel® spreadsheet) at [insert web address]. You may e - mail a completed electronic file to teal.kim@epa.gov . As discussed in the cover letter, if you believe that disclosure of any specific informa tion that you submit would reveal confidential business information (CBI) or a trade secret, you should clearly identify such specific information. Please do not label an entire response "confidential" if only certain portions consist of CBI or trade secrets. Enclosures 2, 3, and 5 contain more information about CBI . If you elect to provide this information via the electronic format and your responses CBI , please mail a compact disc containing the files to the address above. Do not e - mail a file that co ntains CBI . The questionnaire forms are separated into the following sections. A. Company and Facility Information A- 1. Parent Company Information A- 2. Facility Information B. Spray Booth Information C. Coatings Information C - 1. Coatings (Engl ish units) C - 2. Coatings (metric units)4

D. Chemical Milling and Metal Finishing Operations E. Cleaning Operations E - 1. Blast Depainting/Cleaning Operations E - 2. Solvent Depainting Operations E - 3. Solvent Cleaning Operations F. Composite Proce ssing Operations F - 1. Composite Processing (English units) F - 2. Composite Processing (metric units) G. Storage Tanks H. W astewater Treatment Operations I. Air Pollution Control Device Startup and Shutdown J. Control Devices J - 1. Electrostati c Precipitator J - 2. Scrubber J - 3. Mechanical Collector J -4. Fabric Filter J - 5. Thermal Incinerator J - 6. Condenser J - 7. Carbon Adsorber J - 8 . High Velocity Air Filter J - 9 . Mist Eliminator J - 10 . Ventilation System J - 11 . Other K. Air Poll ution Control Device Cost II. Instructions for Completing the Forms All fie lds in the forms that apply to your operations must be completed, even if you enter “N/A.” For the purposes of this information request, all hazardous air pollutants ( HAP ) con centrations and emissions are to be quantified. Do not report concentrations of emissions as “trace” or “minimal.” If a concentration is at or below the applicable method’s detection level, then provide information about the method (title and source), th e calculated detection level in units of the applicable raw material or emissions concentration or mass rate , and the procedure for determining the detection level.5

Throughout these forms, many of the cells for your data input have drop - down lists for you to choose an appropriate response. If the specific choice that characterizes your situation is not included in the list, please select “other” and provide a description of your situation in the comments section. Form A- 1. Parent Company Information Co mplete this form to identify the parent company of this facility. This information will allow EPA to distinguish small businesses in any economic analysis that may be required. Section I, Question 8 (size of parent company) is an important factor that EPA will use to identify small businesses. Please note that the total of all full -time and parttime employees should be reported. This information is required for the parent company, not this facility. The Regulatory Flexibility Act (Public Law 96 - 354, S eptember 19, 1980) (RFA) requires consideration of the impacts of regulations on small businesses. The major purpose of the RFA is to keep regulatory requirements from getting out of proportion to the scale of the businesses being regulated, without compromising the objectives of, in this case, the Clean Air Act (CAA) . If a regulation is likely to have a significant economic impact on a substantial number of small businesses, EPA may, to the extent allowed by the CAA , give special consideration to those s mall businesses when analyzing regulatory alternatives and drafting a regulation. T he Small Business Administration uses employment ranges to separate businesses into "large" and "small" categories. T he actual cutoff between large and small facilities is depend ent on the NAICS code of the establishments in question. Form A-2. Facility

Information Provide the information requested in this form for this specific facility. Section I In Question 1, provide the actual address (not the mailing address) of this facility. You must also provide latitude and longitude coordinates for the facility. Latitude and longitude must be reported in decimal degrees to six decimal places. Question 2 asks you to i ndicate whether this facility manufactures or reworks aerospace components or parts. If you answer “No” to this question, please provide an explanation in the Comments section of what activities are carried out at this facility and why you should not be considered an aerospace manufacturing or rework facility. If you answer “No” then you do not have to complete any other parts of this information request other than Forms A- 1 and A- 2.6

Note that Q uestion 2 is NOT asking whether the facility is subject to the aerospace NESHAP. If your facility performs any activities for the manufacture or rework aerospace components or parts, you should answer “Yes ” to this question and complete the rest of the information request. Question 3 - Enter all applicable NAICS that apply to the aerospace activities at this facility. NAICS codes may be found at http://www.census.gov/eos/www/naics/ . Do not enter Standard Industrial Classification codes. Question 5 – Answer “Yes” or “No” whether this facility manufactures or rewo rks aerospace components or parts for each of the listed market segments. Question 6 – E nter the typical operating schedule for this facility for the reporting year (2008). You may provide estimate s if you do not track the hours/day and days/year the fac ility is in operation . Section II Provide the name and contact information for the technical contact for your response to this information request. The technical contact should be able to answer inquiri es from EPA concerning any information provided in your response. Section III Question 1 – Identify whether this facility is a major source of HAP emissions. Section 112(a)(1) of the CAA defines a major source “ as any stationary source or group of stationary sources located within a contiguous area and under common control that emits or has the potential to emit considering controls, in the aggregate,10 tons per year or more of any HAP or 25 tons per year or more of any combination of HAP . ” Question 2 – If you answer “No” to Question 1 of this section, speci fy whether the facility has a federally enforceable permit limitation to limit HAP emissions to less than the major source thresholds and, if so, identify any such limits . Questions 3 and 4 – identify any non - aerospace products manufactured at this facility. Question 5 – As part of this project, EPA may conduct air dispersion modeling of the emissions from facilities that respond to this information request. This modeling requires the input of the maximum hourly emissions from each emission point. However, we realize there are typically a large number of emission points at aerospace manufacturing and rework facilities, and determining the maximum hourly emissions from each and every emission point could be difficult and burdensome. Rather than aski ng for maximum hourly emissions for each emission point, we are instead requesting that you provide a single multiplier that we can use to scale up average hourly emissions to maximum hourly emissions. W e will determine average hourly emissions from the d ata you provide in your response to this information request.7

Therefore, you must provide a response to this question, even if the multiplier you provide is 1. You must also provide a description of how you determined the multiplier in the comments secti on of this form. Form B - 1. Spray

Booth Information This form has space for entering data for 10 spray booths. If you are providing data for more than 10 spray booths, please add additional columns as necessary. Section I Question 1 – Enter a unique identification number of your choosing for each spray booth. Question 2 – Choose one of the booth types from the drop - down list. Question 3 – Enter the latitude and longitude coordinates for the location of this booth. The coordinates must be in decima l degrees to at least 6 decimal places. Question 4 – Enter the overall dimensions in feet of the building in which the booth is located (not the dimensions of the booth itself). Question 5 – From the drop - down list, select “Cross Draft” if the airflow ex its from the side of the booth, or “Down Draft” if the airflow exits from the bottom of the booth. Question 6 – For the reporting year, enter the average number of hours per day this booth is in operation. Section II Question 1 – From the drop - down list , select the type of particulate filter system used for this booth. Question 2 - 3 – Enter the particulate control efficiency for the particulate filters, and indicate how that efficiency was determined.8

Section III Question 1 – Enter the latitude and lo ngitude coordinates for the location of the exhaust stack for this booth. The coordinates must be in decimal degrees to at least 6 decimal places. Questions 2 - 5 – E nter the diameter and height of the exhaust stack in feet, temperature of the exhaust stre am in degrees Fahrenheit , and the flow rate of the exhaust stream in actual cubic feet per minute. Section IV Complete this section if this spray booth is vented to a control device that reduces the amount of organic emissions. Question 1 – Enter a uniq ue identification number of your choosing for this control device. You must also complete a Form J for this control device and the identification number entered here must match the ident ification number entered in Form J . Question 2 – Choose the appropriate control device type from the drop - down list. Question 3 -4 – Enter the capture efficiency for the organic emissions, and indicate how that efficiency was determined. Form C - 1 and C -2 . Coatings Use Form C- 1 if you are reporting coating information in English units, or use Form C-2 if you are reporting coating information in metric units. DO NOT complete both Form C1 and Form C-2. This form has space for entering data for 20 coatings. If you are providing data for more than 20 coatings, please ad d additional columns as necessary. Section I Question 1 – Enter a unique identification number of your choosing for each coating. Question 4 – Enter whether this coating is regulated under the aerospace NESHAP. Question 5 – If you entered “Yes” for Que stion 4 of this section, select the coating type from the drop - down list. The coatings in the drop - down list are the only ones regulated under the aerospace NESHAP, so you must choose one of these coating types if you entered “Yes” for Question 4.9

Questi on 6 – If you entered “No” for question 4 of this section, then the coating is a specialty coating. Choose the appropriate specialty coating type from the drop - down list. If you select “other,” you must provide a coating type in the comments section. Se ction II Question 1 – Enter the total volume of this coating that your facility used for all coating operations (e. g. , all spray booths) for the reporting year. Question 2 – Enter the requested physical property data for this coating. This information m ust be provided for the coating in its as -applied condition. Question 3 – Enter the name of each HAP (organic and inorganic) contained in this coating, the Chemical Abstracts Service (CAS) Number for the HAP, and the mass fraction of the HAP in the as - app lied coating. If you do not know the CAS N umber , it is often provided on the material safety data sheet for the coating. You may also find CAS Numbers at http://ias pub.epa.gov/sor_internet/registry/substreg/home/overview/home.do . There are also various other Internet sources that provide CAS Numbers. To avoid double counting, do not report the same HAP emissions under different CAS numbers or as different compound s. For example, do not report both “total chromium” and “hexavalent chromium” for a single chromium compound contained in a coating . The correct reporting method, particularly for chromium compounds, glycol ethers, and polycyclic organic matter, is to re port the specific compound (e.g., strontium chromate, ethylene glycol dibutyl ether) rather than the general class of HAP (e.g., chromium compounds, glycol ethers). This form has space for entering data for five HAP components of the coating. If this coa ting has more than five HAP components, please add rows as necessary. Section III For each spray booth in which this coating was applied during the reporting year, enter the booth identification number (must match the identification number provided on Fo rm B - 1), and the percent of the total usage of that coating applied in this booth. The sum of the percent usage by booth should equal 100 percent for each coating. If a portion of the coating was not applied in a spray booth, then the sum of the percent usage by booth will be less than 100 percent. In this case, provide details in the comments section of the non - spray booth areas where the coating was used including the latitude and longitude coordinates, and volume of coating used in these areas. If you r facility does not maintain adequate records of the volume of coatings used by spray booth, provide an engineering estimate and note this in the comments section. This form has space for entering coating usage for 10 spray booths. If this coating was ap plied in more than 10 spray booths, please add rows as necessary.10

Form D - 1. Chemical Milling and Metal Finishing Operations Use this form to report HAP usage and emissions from chemical milling and metal finishing operations. Examples of metal finishing operations include electrolytic nickel plating, anodizing, passivation, and phosphating. Report the requested information for each process tank

/vat that contains HAP in the chemical milling and metal finishing operations. This form has space for entering data for 10 tanks. If you are providing data for more than 10 tanks, please add additional columns as necessary. Section I Question 1 – Enter a unique identification number of your choosing for each tank. Question 2 – Enter the latitude and longitu de coordinates for the location of this tank. The coordinates must be in decimal degrees to at least 6 decimal places. Question 3 – Enter the overall dimensions in feet of the building in which the tank is located (not the dimensions of the tank itself). Question 4 – Enter a brief description of the purpose of this tank in the chemical milling or metal finishing process (e.g., cleaning prior to electroplating, electroplating of nickel). Question 5 - For the reporting year, enter the average number of ho urs per day this tank is in operation. Section II Question 1 – Enter the name of each HAP (organic and inorganic) contained in this tank, the CAS Number for the HAP, and the annual emissions of the HAP from this tank. If you do not know the CAS Number, it is often provided on the material safety data sheet for the material in the tank. You may also find CAS Numbers at http://iaspub.epa.gov/sor_internet/registry/sub streg/home/overview/home.do . There are also various other Internet sources that provide CAS Numbers. To avoid double counting, do not report the same HAP emissions under different CAS N umbers or as different compounds. For example, do not report both “ total chromium” and “hexavalent chromium” for a single chromium compound . The correct reporting method, particularly for chromium compounds, glycol ethers, and polycyclic organic matter, is to report the specific compound (e.g., strontium chromate, ethyle ne glycol dibutyl ether) rather than the general class of HAP (e.g., chromium compounds, glycol ethers). This form has space for entering data for five HAPs. If th e material in the tank has more than five HAP components, please add rows as necessary.11

Qu estion 2 – If a control device is used to reduce the emissions of HAP from this tank, enter a unique identification number of your choosing for this control device. You must also complete a Form J for this control device and the identification number ente red here must match the identification number entered in the Form J . Question 3 – Choose the appropriate control device type from the drop - down list. Question 4 - 5 – Enter the capture efficiency for the organic emissions and indicate how that efficiency was determined. Section III Describe any work practices that you use to reduce the emissions of HAP from this tank. Form E - 1. Blast Depainting/Cleaning Operations Use this form to report HAP emissions from depaint i ng and cleaning operations that use blasting methods such as sand blasting, plastic bead blasting, carbon dioxide blasting, sodium bicarbonate blasting, etc. This form has space for entering data for three blasting operation s. If you are providing data for more than three blasting operatio n s, please add additional columns as necessary. Section I Question 1 – Enter a unique identification number of your choosing for each blasting operation . Question 2 – Enter the latitude and longitude coordinates for the location of this blasting operati on . The coordinates must be in decimal degrees to at least 6 decimal places. Question 3 – Identify where the blasting operation actually takes place. For example, the blasting operation could be located outside, in a partially enclosed booth or hanger, in a fully enclosed booth, etc. Question 4 – Specifically identify the blasting material used. Be as specific as possible. For example, instead of reporting steel shot, report specifics about shape and size such as round steel balls, 40 - 50 mesh. Questi on 5 – Enter the overall dimensions in feet of the building in which the blasting operation is located .12

Question 6 – Enter a brief description of the purpose of this blasting operation (e.g., rework operation to remove paint; cleaning to remove oil and grease from parts ). Question 7 - For the reporting year, enter the average number of hours per day this blasting operation is in operation. Section II Question 1 – Enter the name of each HAP (organic and inorganic) emitted by this blasting operation , the CAS Number for the HAP, and the annual emissions of the HAP from this blasting operation . If you do not know the CAS Number, it is often provided on material safety data sheets . You may also find CAS Numbers at http://iaspub.epa.gov/sor_internet/registry/substreg/home/overview/home.do . There are also various other Internet sources that provide CAS Numbers. To avoid double counting, do not report the same HAP emiss ions under different CAS N umbers or as different compounds. For example, do not report both “total chromium” and “hexavalent chromium” for a single chromium compound . The correct reporting method, particularly for chromium compounds, glycol ethers, and p olycyclic organic matter, is to report the specific compound (e.g., strontium chromate, ethylene glycol dibutyl ether) rather than the general class of HAP (e.g., chromium compounds, glycol ethers). This form has space for entering data for five HAPs. If this blasting operation emits more than five HAPs, please add rows as necessary. Question 2 – If a control device is used to reduce the emissions of HAP from this blasting operation , enter a unique identification number of your choosing for this control device. You must also complete a Form J for this control device and the identification number entered here must match the identification number entered in the Form J . Question 3 – Choose the appropriate control device type from the drop - down list. Ques tion 4 - 5 – Enter the capture efficiency for the HAP emissions, and indicate how that efficiency was determined. Section III Describe any work practices that you use to reduce the emissions of HAP from this blasting operation .13

Form E -2. Solvent Depain ting Operations Use this form to report HAP emissions from depaint i ng operations that use solvent materials (liquid materials as opposed to blasting operations reported on Form E - 1) to remove paint from aerospace components. This form has space for entering data for three depainting operations. If you are providing data for more than three depainting operations, please add additional columns as necessary. Section I Question 1 – Enter a unique identification number of your choosing for each depainting o peration. Question 2 – Enter the latitude and longitude coordinates for the location of this depainting operation. The coordinates must be in decimal degrees to at least 6 decimal places. Question 3 – Enter the overall dimensions in feet of the building in which the depainting operation is located. Question 4 – Enter a brief description of the purpose of this depainting operation (e.g., remove paint from landing gear components, depainting of aircraft exterior). Question 5 - For the reporting year, enter the average number of hours per day this depaint ing operation is in operation. Section II Question 1 – Enter the name of each HAP (organic and inorganic) emitted by this depain ting operation, the CAS Number for the HAP, and the annual emissions of the HAP from this depain ting operation. If you do not know the CAS Number, it is often provided on material safety data sheets. You may also find CAS Numbers at http://iaspub.epa.gov/sor_internet/registry/substreg/home/overview/home.do . There are also various other Internet sources that provide CAS Numbers. To avoid double counting, do not report the same HAP emissions under different CAS N umbers or as different comp ounds. For example, do not report both “total chromium” and “hexavalent chromium” for a single chromium compound . The correct reporting method, particularly for chromium compounds, glycol ethers, and polycyclic organic matter, is to report the specific compound (e.g., strontium chromate, ethylene glycol dibutyl ether) rather than the general class of HAP (e.g., chromium compounds, glycol ethers).14

This form has space for entering data for five HAPs. If this depain ting operation emits more than five HAPs, please add rows as necessary. Question 2 – If a control device is used to reduce the emissions of HAP from this depain ting operation, enter a unique identification number of your choosing for this control device. You must also complete a Form J for this control device and the identification number entered here must match the identification number entered in the Form J . Question 3 – Choose the appropriate control device type from the drop - down list. Question 4 - 5 – Enter the capture efficiency for the H AP emissions, and indicate how that efficiency was determined. Section III Describe any work practices that you use to reduce the emissions of HAP from this depainting operation . Form E -3. Solvent Cleaning Operations Use this form to report HAP emis sions from solvent cleaning operations such as hand wipe cleaning of aerospace components, cleaning of spray guns, and cleaning of spray booths. Do not report cleaning operations subject to the Halogenated Solvent Cleaning NESHA P (40 CFR part 63, subpart T) on this form. Use Form E -4 for those operations. This form has space for entering data for three cleaning operations. If you are providing data for more than three cleaning operations, please add additional columns as necessary. Section I Question 1 – Enter a unique identification number of your choosing for each cleaning operation. Question 2 – Enter the latitude and longitude coordinates for the location of this cleaning operation. The coordinates must be in decimal degrees to at least 6 decimal places. Question 3 – Enter the overall dimensions in feet of the building in which the cleaning operation is located.15

Question 4 – Enter a brief description of the purpose of this cleaning operation (e.g., cleaning of aerospace components after machinin g ; cleaning to remove protective oils). Question 5 - For the reporting year, enter the average number of hours per day this clean ing operation is in operation. Section II Question 1 – Enter the name of each HAP (organic and inorganic) emitted by this cl ean ing operation, the CAS Number for the HAP, and the annual emissions of the HAP from this clean ing operation. If you do not know the CAS Number, it is often provided on material safety data sheets. You may also find CAS Numbers at http://iaspub.epa.gov/sor_internet/registry/substreg/home/overview/home.do . There are also various other Internet sources that provide CAS Numbers. To avoid double counting, do not rep ort the same HAP emissions under different CAS N umbers or as different compounds. For example, do not report both “total chromium” and “hexavalent chromium” for a single chromium compound . The correct reporting method, particularly for chromium compounds , glycol ethers, and polycyclic organic matter, is to report the specific compound (e.g., strontium chromate, ethylene glycol dibutyl ether) rather than the general class of HAP (e.g., chromium compounds, glycol ethers). This form has space for entering d ata for five HAPs. If this clean ing operation emits more than five HAPs, please add rows as necessary. Question 2 – If a control device is used to reduce the emissions of HAP from this clean ing operation, enter a unique identification number of your choo sing for this control device. You must also complete a Form J for this control device and the identification number entered here must match the identification number entered in the Form J . Question 3 – Choose the appropriate control device type from the drop - down list. Question 4 - 5 – Enter the capture efficiency for the HAP emissions, and indicate how that efficiency was determined. Section III Describe any work practices that you use to reduce the emissions of HAP from this cleaning operation .16

Form E -4. Halogenated Solvent Cleaning Operations The EPA is requesting that you provide the information requested in Form E -4 for all cleaning operations at your facility that are subject to the Halogenated Solvent Cleaning NESHAP (40 CFR part 63, subpart T). Even though halogenated solvent cleaning operations are not subject to the aerospace NESHAP, the EPA is concerned that some aerospace facilities may have mistakenly reported emissions from these operations as emissions from operations subject to the a erospace NESHAP in past reporting to s tate or local agencies. The EPA is currently evaluating the residual risk from aerospace operations and halogenated solvent cleaning operations. In order to estimate the residual risk accurately from each of these ca tegories, the EPA is attempting to first develop accurate emissions estimates. Your efforts to properly report halogenated solvent cleaning operations on Form E -4 and not on Form E - 3 will play an important role in the EPA’s development of emissions estima tes for these two categories. In order to assist you in determining which cleaning operations should be reported on Form E -4, the following description is reproduced from § 63. 460(a) identifying the sources subject to subpart T: each individual batch vap or, in - line vapor, in - line cold, and batch cold solvent cleaning machine that uses any solvent containing methylene chloride (CAS No. 75–09–2), perchloroethylene (CAS No. 127– 18–4), trichloroethylene (CAS No. 79–01 –6), 1,1,1 -trichloroethane (CAS No. 71 –55–6), carbon tetrachloride (CAS No. 56–23–5) or chloroform (CAS No. 67–66–3), or any combination of these halogenated HAP solvents, in a total concentration greater than 5 percent by weight, as a cleaning and/or drying agent. The concentration of these solve nts may be determined using EPA test method 18, material safety data sheets, or engineering calculations. W ipe cleaning activities, such as using a rag containing halogenated solvent or a spray cleaner containing halogenated solvent are not covered under t he provisions of this subpart. NOTE: Not all cleaning operations that use methylene chloride, perchloroethylene, trichloroethylene, 1,1,1 -trichloroethane, carbon tetrachloride , or chloroform are subject to subpart T. Before reporting a cleaning operatio n on this form, make sure that the cleaning operation uses one or more of these halogenated solvents AND that the solvent is used in a batch vapor, in - line vapor, in - line cold, or batch cold solvent cleaning machine as these machines are defined in subpart T. This form has space for entering data for three cleaning operations. If you are providing data for more than three cleaning operations, please add additional columns as necessary. Section I Question 1 – Enter a unique identification number of your choosing for each cleaning operation.17

Question 2 – Enter the latitude and longitude coordinates for the location of this cleaning operation. The coordinates must be in decimal degrees to at least 6 decimal places. Question 3 – Enter the overall dimensio ns in feet of the building in which the cleaning operation is located. Question 4 – Enter a brief description of the purpose of this cleaning operation (e.g., cleaning of aerospace components after machining; cleaning to remove protective oils). Question 5 - For the reporting year, enter the average number of hours per day this cleaning operation is in operation. Section II Question 1 – For each halogenated solvent listed, enter the annual emissions of the HAP from this cleaning operation . This form in cludes all six of the halogenated solvents covered under subpart T. Enter a value of zero for halogenated solvents not used in this cleaning operation . Question 2 – If a control device is used to reduce the emissions of HAP from this cleaning operation, enter a unique identification number of your choosing for this control device. You must also complete a Form J for this control device and the identification number entered here must match the identification number entered in the Form J. Question 3 – Ch oose the appropriate control device type from the drop - down list. Question 4 - 5 – Enter the capture efficiency for the HAP emissions, and indicate how that efficiency was determined. Section III Describe any work practices that you use to reduce the emis sions of HAP from this cleaning operation. Form s F - 1 and F -2 . Composite Processing Operations Use Form F

- 1 if you are reporting resin information in English units, or use Form F - 2 if you are reporting resin information in metric units. DO NOT complete both Form F - 1 and Form F

- 2.18

This form has space for entering data for 1 0 resin s used in composite processing operations . If you are providing data for more than 1 0 resins , please add additional columns as necessary. Section I Question 1 – Enter a uniq ue identification number of your choosing for each resin. Question 2 – Enter the name of the manufacturer of this resin Question 3 – Enter the manufacturer’s name or designation for this resin. Section II Question 1 – Enter the total volume of this res in that your facility used for all composite processing operations for the reporting year. Question 2 – Enter the requested physical property data for this resin. This information must be provided for the resin in its as - applied condition. Question 3 – Enter the name of each HAP (organic and inorganic) contained in this resin, the CAS Number for the HAP, and the mass fraction of the HAP in the as - applied resin. If you do not know the CAS Number, it is often provided on the material safety data sheet for the resin. You may also find CAS Numbers at http://iaspub.epa.gov/sor_internet/registry/substreg/home/overview/home.do . There are also various other Internet sources that provide CAS Numbers. To avoid double counting, do not report the same HAP emissions under different CAS N umbers or as different compounds. For example, do not report both “total chromium” and “hexavalent chromium” for a single chromium compound . The correct reporting method, particularly for chromium compounds, glycol ethers, and polycyclic organic matter, is to report the specific compound (e.g., strontium chromate, ethylene glycol dibutyl ether) rather than the general class of HAP (e.g., chro mium compounds, glycol ethers). This form has space for entering data for five HAP components of the resin. If this resin has more than five HAP components, please add rows as necessary. Section III For each spray booth in which this resin was applied during the reporting year, enter the booth identification number (must match the identification number provided on Form B 1), and the percent of the total usage of that resin applied in this booth. The sum of the percent usage by booth must equal 100 percent for each resin. If a portion of the resin was not applied in a spray booth, then the sum of the percent usage by booth will be less than 100 percent. In this case, provide details in the comments section of the non -19

spray booth areas where the resin was used including the latitude and longitude coordinates, and volume of resin used in these areas. If your facility does not maintain adequate records of the volume of resins used by spray booth, provide an engineering estimate and note this in the comme nts section. This form has space for entering resin usage for three spray booths. If this resin was applied in more than three spray booths, please add rows as necessary. Section IV Question 1 – If a control device is used to reduce the emissions of HA P from this composite processing operation, enter a unique identification number of your choosing for this control device. You must also complete a Form J for this control device and the identification number entered here must match the identification num ber entered in the Form J . Question 2 – Choose the appropriate control device type from the drop - down list. Question 3 -4 – Enter the capture efficiency for the HAP emissions, and indicate how that efficiency was determined. Form G - 1. Storage Tanks U se this form to report HAP emissions from storage tanks used to store materials used in aerospace manufacturing and rework operations (e.g., solvents used for cleaning or for thinning coatings, depainting materials, waste treatment chemicals). Tanks and m ixing vessels in centralized paint mixing and distribution rooms are considered storage tanks for the purposes of this form. Do not complete this form for the following: 1) storage tanks that did not contain HAP during the reporting year ; 2) storage ta nks that contain fuel for engines, boilers, or other combustion devices; 3) storage tanks that operate at greater than atmospheric pressure; 4) storage tanks that contain H A P only as impurities ; 5) vessels used to transport materials to the facility (e.g., 55 gallon drums of solvent as received from the supplier); 6) tanks used to store or process wastewater (see Form H - 1) , and tanks that are regulated under a NESHAP other than the Aerospace Manufacturing and Rework NESHAP . Section I Question 1 – Enter a unique identification number of your choosing for each tank. Question 2 – Enter the type of tanks (e.g., fixed roof, internal floating roof, external floating roof, etc.).20

Question 3 – Enter the latitude and longitude coordinates for the location of this tank. The coordinates must be in decimal degrees to at least 6 decimal places. Question 4 – Enter the diameter and height of the tank. Question 5 – Specifically identify the liquid stored in the tank. Do not enter a generic term such as “solvent.” Ra ther, enter the specific name of the stored liquid, such as “VM&P Naphtha.” You may enter the trade name of the stored liquid. Question 6 – If this storage tank is located indoors, enter the overall dimensions in feet of the building in which the tank is located. Section II Question 1 – Enter the annual throughput of the tank in gallons. If specific records are not available, you may estimate this value using purchase records, production records, or engineering estimates. Question 2 – Enter each HAP component stored in the tank, the mass fraction of each HAP in the stored liquid, annual emissions of the HAP (not of the entire liquid, unless the liquid consists only of this HAP), and the method used to estimate the emissions. You may use EPA’s TANKS Em issions Estimation Software to calculate emissions from each tank. The TANKS software is available at http://www.epa.gov/ttn/chief/software/tanks/index.html . If you use TANKS to estim ate emissions, you must provide all of the input values you used, as well as the model outputs. This form has space for entering data for five HAP components of the stored liquid. If the stored liquid has more than five HAP components, please add rows as necessary. Question 3 – If a control device is used to reduce the emissions of HAP from this tank, enter a unique identification number of your choosing for this control device. You must also complete a Form J for this control device and the identificat ion number entered here must match the identification number entered in the Form J . Question 4 – Choose the appropriate control device type from the drop - down list. Question 5 - 6 – Enter the capture efficiency for the HAP emissions, and indicate how that efficiency was determined. Section III Describe any work practices that you use to reduce the emissions of HAP from each storage tank.21

Form H - 1. Wastewater Treatment Operations Us e this form to report wastewater treatment operations for treating was tewater generated by aerospace manufacturing and rework operations . You only need to report those wastewater treatment operations that either treat HAP - containing wastewater or that use HAP - containing materials to treat wastewater. Do not report those op erations that treat only wastewater from non - aerospace operations. This form has space for entering data for 10 wastewater treatment tanks or operations. If you are providing data for more than 10 tanks or operations, please add additional columns as necessary. Section I Question 1 – Enter a unique identification number of your choosing for each wastewater processing tank or operation. Question 2 – Enter the latitude and longitude coordinates for the location of this tank or operation. The coordinates must be in decimal degrees to at least 6 decimal places. Question 3 – Enter the overall dimensions in feet of the building in which the tank or operation is located. Question 4 – Describe the purpose of this tank or operation (e.g., adjust pH of wastewa ter prior to discharge; removal of heavy metals by precipitation). Question 5 – For the reporting year, enter the average number of hours per day this tank or operation is in operation. Section II Question 1 – For each HAP (organic and inorganic) in the wastewater or used in the treatment of the wastewater, enter the name of the HAP, the CAS Number of the HAP, the annual emissions in pounds/year , and whether the emissions are emitted through a stack or are fugitive emissions. If you do not know the CAS Number, it is often provided on material safety data sheets. You may also find CAS Numbers at http://iaspub.epa.gov/sor_internet/registry/substreg/home/overview/ho me.do . There are also various other Internet sources that provide CAS Numbers. To avoid double counting, do not report the same HAP emissions under different CAS N umbers or as different compounds. For example, do not report both “total chromium” and “h exavalent chromium” for a single chromium compound . The correct reporting method, particularly for chromium compounds, glycol ethers, and polycyclic organic matter, is to report the specific compound (e.g., strontium chromate, ethylene glycol22

dibutyl ethe r) rather than the general class of HAP (e.g., chromium compounds, glycol ethers). This form has space for entering data for five HAPs. If this tank or operation processes or uses more than five HAPs, please add rows as necessary. Question 2 – If a cont rol device is used to reduce the emissions of HAP from this tank or operation, enter a unique identification number of your choosing for this control device. You must also complete a Form J for this control device and the identification number entered here must match the identification number entered in the Form J . Question 3 – Choose the appropriate control device type from the drop - down list. Question 4 - 5 – Enter the capture efficiency for the HAP emissions, and indicate how that efficiency was determ ined. Section III Describe any work practices that you use to reduce the emissions of HAP from each tank or operation. Form I - 1. Startups and Shutdow n s This form is used to report startup and shutdown events that resulted in excess HAP emissions AND that caused a NESHAP emission limit to be exceeded or caused a deviation of any requirement of the NESHAP . Each aerospace manufacturing and rework operation that emits HAP and each add - on control device used to reduce the emissions of HAP from aerospace m anufa cturing and rework operations is subject to reporting on this form. For the purposes of this form, particulate filters and waterwash systems used to capture overspray in paint spray booths are considered to be add - on control devices. The following examples are provided as guidance for which startup and shutdown events must be reported: Example 1: A facility has several spray booths in which aerospace primers and topcoats are applied. The ventilation fans on each spray booth are shut off when the b ooth is not being used and turned on again when parts are ready to be coated. No coating is applied when the fans are not operating . Even though each time the fans are turned on and off is a startup or shutdown event, Form I - 1 does not need to be completed . B ecause no coatings are applied when the fan is not operating, emission limits would not be exceeded during the startup and shutdown events.23

Example 2 : A facility uses a thermal oxidizer to meet the 81 percent organic HAP emission reduction requirem ent of 40 CFR 63.745(d) for aerospace primer and topcoat operations. The thermal oxidizer has been shut down for maintenance. Following the repairs, t he thermal oxidizer is restarted from a cold start , and the facility immediately starts to apply primers and topcoats. The emissions while the thermal oxidizer was not at the operati ng temperature resulted in an exceed e nce of the 81 percent emission reduction requirement. This event must be reported on F orm I - 1. Example 3: A facility applies primers containing hexavalent chromium to aerospace parts in a spray booth. One operator turns off the ventilation fan for the spray booth, but another operator is still in the booth applying the primer. This shutdown event must be reported on Form I - 1. Provide the requested information if it is readily available. You are not required to perform additional testing or data gathering for these events in order to complete this form. Form J - 1 to J - 11 . Air Pollution Control Devices Complete the appropriate form for each air pollution control device that you use to reduce HAP emissions from aerospace manufacturing and rework operations. You are not required to complete these forms for p articulate filters and waterwash systems used to capture overspray in paint spray booths . Spray booth particulate filter information is reported on Form B - 1, Section II, Particulate Filters. Provide the requested information if it is readily available. You are not required to perform any additional testing or data gathering in order to complete these forms. Form K - 1. Air Pollution Control Device Costs Complete this form as completely as possible using readily available information for each air pollution control device for which you completed a Form J .