## Enclosure **3**

**7042 Federal**  **Register /**  **Vol 56.**  

## No. **35 /**  **Thursday, February**  **21, 1991**  

## / **Notices**

**[AD-FRL-3906-3]**

**Disclosure of** **Emission Data**  **Claimed as**  **Confidential Under**  **Sections 110**  **and 114(**  **c) of** **the Clean** **Air Act** 

**AGENCY: Environmental** **Protection Agency**  **(EPA). ACTION:**  **Notice of** **policy on**  **public release**  **of certain**  **emission data**  **submitted under**  **sections 110**  **and 114(** **c) of** **the Clean**  **Air Act**  **(CAA).**

**SUMMARY: Section**  **1 14(c)**  **of the**  **CAA excludes**  **emission data**  **from the**  **general definition**  **of trade**  **secret information.**  **Certain classes**  **of data**  **submitted to**  **the EPA**  **under sections**  **110 and**  **114(a) of** **the CAA** 

**are emission**  **data, and,**  **as such,**  **cannot be**  **withheld from disclosure** **as confidential**  **pursuant to**  **section 1905**  **of title**  **18 of** **the United**  **States Code.**  **This notice**  **clarifies EPA's**  **current policy,**  **and solicits**  **comment regarding**  **that policy**  **and categories**  **of data**  **which it**  **considers excluded**  **from a**  **trade**
**secret definition.**  **DATES: Written**  **comments pertaining**  **to this**  **notice are**  **requested by**  **April 22,**  **1991. ADDRESSES:**  **Submit comments**  **to: Nancy**  **D. Riley,**  **U.S. Environmental**  **Protection Agency,**  **Emission Standards**  **Division, Pollutant**  **Assessment Branch**  **(MD-13), Research** **Triangle Park,**  **NC 27711.**  **FOR FURTHER**  **INFORMATION CONTACT:**  **Timothy Mohin**  **(telephone: (919)**  **541-5349 commerciallFTS**  **629-5349)**

**or Karen**  **Blanchard (telephone:**  **(919) 541-**  **5503 commerciallFTS**  **629-5503), Pollutant**  **Assessment Branch**  **(MD-13), Emission**  **Standards Division;**  **or Thomas**  **Rosendahl (telephone:**  **(919) 541-5404**  **commerciallFTS 629-5404),**  **National Air**  **Data Branch**  **(MD-14), Technical**  **Support Division;**  **U.S. Environmental**  **Protection Agency,**  **Research Triangle**  **Park, North**  **Carolina 27711.**  **SUPPLEMENTARY INFORMATION:**  **The EPA** **routinely uses**  **the authority**  **of sections**  **liD and**  **114(a) of** **the CAA** **to gather**  **technical information**  **from industries**  **involved in**  **operations that**  **lead to**  **emission of** **pollutants to**  **the ambient**  **air. This**  **information has**  **been used, among**  **other things,**  **to better**  **characterize emitting**  **facilities and**  **to evaluate**  **the need**  **for and**  **impacts of** **potential regulation.**  **Information requests**  **under sections**  **110 and**  **114(a) of** **the CAA**  **typically include**  **questions on**  **uncontrolled and**  **controlled emission**  **rates and**  **emission parameters**  **of the**  **pollutant or**  **group of pollutants**  **of**

**concern. The**  **respondents sometimes**  **claim that**  **its response**  **constitutes trade**  **secret information,**  **and thus,**  **should be**  **treated as**  **confidential. Claims**  **of confidentiality**  **may be**  **made under**  **section 114(c)**  **of the**  **CAA, which**  **states ".**  **• • upon**  **a showing**  **satisfactory to**  **the Administrator**  **by any**  **person that**  **records, reports,**  **or information,** 

**or a**  **particular part**  **thereof, (other**  **than emission**  **data) to**  **which the**  **Administrator has**  **access under**  **this section**  **if made**  **public, would**  **divulge methods**  **or processes**  **entitled**
**to protection**  **as trade**  **secrets of** **such person,**  **the Administrator**  **shall consider**  **such • • •**  **confidential in**  **accordance with**  **the purposes**  **of section**  **1905 of** **title 18**  **of the**  **United States**  **Code • • '** 

**. "**  **If the**  **Administrator so**  **determines, the**  **information is**  **not disclosable**  **to the**  **public. However,**  **section 114(c)**  **of the**  **CAA provides**  **that information**  **claimed to**  **be a**  **trade secret**  **but which**  **constitutes emission**  **data may**  **not be**  **withheld as**  **confidential. Although**  **typically the**  **EPA evaluates**  **whether information**  **constitutes emission**  **data on**  **a case-by-case**  **basis, it**  **believes that** 

**some kinds**  **of data** **will always**  **constitute emission**  **data within**  **the meaning**  **of section**  **114(c). The**  **purpose of** **this notice**  **is to**  **describe, without attempting**  **to be**  **comprehensive, that**  **information which**  **the EPA** **generally considers**  **to be**  **emission data,**  **and which**  **cannot qualify** **as confidential**  **under either**  **section 114(** **c) or**  **section 11** **0 (as** 
**set forth**  **in 41**  **CFR 51.321,**  **51.322, and**  **51.323) of** **the CAA.**  **The EPA**  **is issuing**  **this notice**  **to clarify**  **its policy**  **and procedures,**  **to facilitate**  **the use**  **of these**  **data in**  **automated data**  **systems and**  **computer-based simulation**  **models, and**  **to expedite**  **processing of** **claims for**  **confidentiality or**  **requests for**  **disclosure. The**  **EPA presently**  **determines that**  **data submitted**  **to it**  **as emission**  **data does**  **not qualify**  **as confidential**  **if it** **meets the**  **following definition**  **under 40**  **CFR 2.30** 

## I**(a)(2)(i):**

**a. Definitions.**  **For the**  **purpose of** **this section,** 

## (I)**Act means**  **the Clean**  **Air Act,**  **as amended,**  **42 U.S.C.**  **7401 et**  **seq. (2)(i)**  **Emission data**  **means, with**  **reference to**  **any**

**source of** **emission of** **any substance**  **into the**  **air- (A)**  **Information necessary**  **to determine**  **the identity, amount, frequency,**  **concentration, or**  **other characteristics**  **(to the**  **extend related to**  **air quality)**  **of any**  **emission which**  **has been**  **emitted by**  **the source**  **(or of** 
**any pollutant**  **resulting from**  **any emission**  **by the**  **source), or**  **any combination**  **of the**  **foregoing: (B)** **Information necessary to**  **determine the**  **identity, amount,**  **frequency, concentration,**  **or other**  **characteristics (to**  **the extent related**  **to air**  **quality) of** **the emission**  **which, under**  **an applicable**  **standard or**  **limitation, the**  **source was**  **authorized to**  **emit (including,**  **to the**  **extent necessary**  **for such**  **purposes, a**  **description of** **the manner**  **or rate**  **of operation**  **of the**  **source), or**  **any combination**  **of the**  **foregoing. (C)**  **A general**  **description of** **the location**  **and/or nature**  **of the**  **source to**  **the extent**  **necessary to**  **identify the**  **source and**  **to distinguish**  **it from**  **other sources (including,** 
**to the**  **extent necessary**  **for such**  **purposes, a**  **description of** **the device,**  **installation, or**  **operation constituting**  **the source).**  **The table**  **below lists**  **the specific**  **data fields**  **which the**  **EPA presently**  **considers to**  **constitute emission data and provides**  **a brief**  **description of** **what each** **data field**  **describes. The**  **descriptions are**  **intended to**  **provide general information.**  **This list**  **is not**  **exhaustive, and,**  **therefore, other**  **data might**  **be found,**  **in a**  **proper case,**  **to constitute**  **emission data.** 

**Emission Data**  **Fields**

**Facility Identification:**  **The following**  **data fields**  **are needed**  **to establish**  **the identity**  **and location**  **of emission**  **sources. This**  **shall also**  **include a**  **description or**  **an identifier**  **of the**  **device, installation,**  **or operation**  **constituting the**  **source. These**  **data are**  **used to**  **locate**

**sources for**  **dispersion evaluation and**  **exposure modeling.**  **Plant Name**  **and related**  **point identifiers**  **Address City**  **County AQCR**  **(Air Quality**  **Control Region)**  **MSA, PMSA,**  **CMSA (Metropolitan**  **Statistical Areas)**  **State Zip**  **Code Ownership**  **and point**  **of contact**  **information Locational Identifiers:** 

## Federal **Register I**  **Vol 56.**  **No. 35**  **I Thursday,**  **February 21**  **, 1 9**  **91** 

## I **Notices**

**Latitude &**  **Longitude, or**  **UTM Grid**  **Coordinates SIC**  **(Standard Industrial**  **Classification) Emission**  **point, device**  **or operation**  **description infonnation**  **SCC (Source**  **Classification Codes)**  **Emission Parameters:**  **The following**  **data fields**  **are needed**  **to establish**  **the characteristics**  **of the**  **emissions. This**  **information is**  **needed for**  **the analyses**  **of dispersion**  **and potential**  **control equipment.**  **Emission type (e.g.,**  **nature of** **emissions such**  **as CO2),**  **particulate or**  **a specific**  **toxic compound,**  **and origin**  **of emissions**  **such as**  **process vents,**  **storage tanks**  **or equipment**  **leaks) Emission**  **rate (e.g.,**  **the amount**  **released to**  **the atmosphere over** **time such**  **as kglyr**  **or lbs/yr)**  **Release height**  **(e.g., height**  **above ground**  **level where**  **the pollutant**  **is emitted**  **to the**  **atmosphere) Description**  **of terrain**  **and surrounding** 
**structures (e.** **g., the**  **size of** **the area**  **associated with**  **adjacent structures**  **in square**  **meters and**  **terrain descriptions**  **such as**  **mountainous, urban** 

**, or**  **rural) Stack**  **or vent**  **diameter at**  **point of** **emissions (e.g.,**  **the inside**  **diameter of** **vent at**  **the point**  **of emission**  **to the**  **atmosphere in**  **meters) Release**  **velocity (e.g.,**  **velocity of** **release in**  **rnIsec) Release**  **temperature (e.g.,**  **temperature of** **release at**  **point of**  **release in**  **degrees Kelvin)**  **Frequency of** **release (e.g.,**  **how often**  **a release**  **occurs in**  **events per**  **year) Duration**  **of release**  **(e.g., the**  **time associated**  **with a**  **release to**  **the atmosphere)**  **Concentration (e.g.,**  **the amount**  **of an**  **emission stream**  **constituent relative**  **to other**  **stream constituents**  **expressed as**  **parts per**  **million (ppm), volume percent,**  **or weight**  **percent) Density**  **of the**  **emissions stream**  **or average**  **molecular weight**  **(e.g., density**  **expressed as**  **fraction or**  **multiple of** **the density**  **of air:**  **molecular weight**  **in gig-mole)**  **Boiler or**  **process design**  **capacity (e.g.,**  **the gross**  **heating value**  **of fuel**  **input**
**to a**  **boiler at**  **its maximum**  **design rate)**  **Emission estimation**  **method (e.g.,**  **the method**  **by which**  **an emission**  **estimate has**  **been calculated**  **such as**  **material balance,**  **source test,**  **use of** **AP 42**  **emission factors,**  **etc.) Percent**  **space heat**  **(e.g., the**  **percent of** **fuel used**  **for space**  **heating) Hourly**  **maximum design**  **rate (e.g.,**  **the greatest**  **operating rate**  **that would**  **be expected**  **for a**  **source in**  **a I-hour**  **period)**

**The EPA**  **has detennined**  **that these**  **data**

**are emission**  **data and** **releasable upon request.**  **This detennination**  **applies to**  **data currently**  **held by**  **EPA as**  **well as**  **to infonnation**  **submitted to**  **EPA in**  **the future.**  **Future requests**  **for infonnation**  **under sections**  **110 and**  **114 of** **the CAA**  **will indicate**  **that these**  **emission data**  **will not**  **be held**  **confidential. This**  **detennination applies**  **only to**  **the data**  **listed in**  **the table.**  **Detenninations will** **continue to**  **be made**  **on**

**a case-by-case**  **basis for**  **data not**  **specified in**  **this generic**  **detennination. After**  **consideration of** **comments on**  **this policy,**  **a revised**  **policy/detennination may**  **be published.**  **Dated: February**  **8, 1991.**  **Michael Shapiro.**  **Acting Assistant**  **Administrator for**  **Air and**  **Radiation. [FR**  **Doc. 91-4114**  **Filed 2-20-91:**  **8:45** 

## am] **704 3**