### AEROSOLS SECTOR STAKEHOLDER WORKSHOP March 19, 2013
10:00 AM

– 12:00 PM EST 1310 L Street NW, Washington DC, Room 152

CONCEPT NOTE : AEROSOLS SECTOR STAK EHOLDER WORKSHOP

EPA is hosting a workshop for interested stakeholders to exchange information on the ae rosols sector, one of the sectors considered under the Significant New Alternatives Policy (SNAP) program and included for analytical purposes in EPA’s Vintaging Model. The purpose of this meeting is to foster dialogue between stakeholders and EPA is seeki ng information on the current and future
state of the aerosols sector . Toward that end, EPA will share information on the status of national and global activities relevant to stakeholders in the aerosol sector, and will provide an overview of our current understanding of market conditions and forces affec ting the sector. We will also provide time for exchange and discussion, and open communication lines for further data exchange, to allow us to review and update our understanding of the aerosols sector. Because our aim is for a broad update across affect ed sectors, we will plan subsequent meetings for other sectors.

SNAP is EPA's program to evaluate and list substitutes for the ozone

- depleting substances (ODS) being phased out under the the Clean Air Act (CAA). Section 612(c) of the CAA authorizes EPA to identify and publish lists of acceptable and unacceptable substitutes for ODS. A large number of alternatives exist that reduce overall risk to human health and the environment. SNAP’s goal is to

encoura ge a smooth transition from ODS by identifying substitutes that offer lower overall risks to
human health and the environment. SNAP has reviewed substitutes for industrial sectors including but not limited to: Aerosols, Foam Blowing Agents, Cleaning Solve nts, Fire Suppression, Refrigeration & Air Conditioning and Adhesives, Coatings & Inks. The Vintaging Model is the tool that EPA uses to assess consumption and emissions of ODS and alternatives.

Aerosols contain propellants emitted during use. Aerosols us e liquefied or compressed gas to propel active ingredients in liquid, paste, or powder form and many also contain a solvent. Historically, a variety of propellants and solvents have been available to formulators. Hydrocarbons (HCs) (e.g., propane, isobuta ne, blends) and compressed gases (e.g., CO 2 , N 2 O, compressed air) have long been used. Prior to 1978, CFCs were predominantly used by the aerosol industry. CFCs were excellent propellants because of their ability to produce a fine spray; they are non

- flamm able, could be stored under low pressure, and do not react with other ingredients. In 1973 chemists Sherwood Rowland and Mario Molina began studying effects of CFCs on the earth’s atmosphere. They discovered that CFCs were stable enough to migrate to the stratosphere and that the chlorine atoms contained in these molecules could break down large amounts of ozone in the stratosphere. In 1975, a major manufacturer of household aerosol products eliminated CFC propellants over concerns for depletion of the Ear th’s ozone layer. In 1978, the United States banned CFC propellants.

Many consumer products previously using CFCs were reformulated or replaced with a variety of alternatives, including not

- in

- kind substitutes, such as pump sprays or solid and roll

- on de odorants. Aerosol propellant alternatives include hydrochlorofluorcarbons (HCFCs) as well as the re

- uptake of HCs, compressed gases, and oxygenated organic compounds. However, HCFCs are controlled
substances under the Montreal Protocol on Substances that Deplete the Ozone Layer , and subject toregulation under the CAA including a phaseout of production and import. Sale and distribution of aerosols using HCFCs was banned in 1994 with few exceptions.

HCFC propellants were replaced with a range of alternativ es including hydrofluorocarbons (HFCs) (e.g., HFC

- 134a, HFC

- 152a) HCs, compressed gases, and NIK alternatives. HCFC solvents were replaced by HFC

- 4310mee, HFC

- 365mfc, HFC

- 245fa, HCs, oxygenated organic compounds, and hydrofluoroethers (HFEs). Other low

- GWP fluorinated compounds are in use or under development, including hydrofluoroolefins (HFOs). HFO

- 1234ze is being used in the aerosol industry.



### AGENDA

1. Welcome & Introductions

2. Background

a. Montreal Protocol & Clean Air Act

b. Significant New Alternatives Poli cy (SNAP) Program

c. Vintaging Model

3. Discussion

a. S hould EPA refine how we categorize aerosols? Currently the aerosol sector in the Vintaging Model, used to project c onsumption and emissions of ODS and substitutes

, includes propellants broken into simple categ ories. Aerosol solvents are included
with an other s ector

. Are the r e better options to categoriz e aerosols ? What
information can be used to improve the Vintaging Model?

b. In many sectors the SNAP program is receiving an increased number of submissions.

A re new substitutes anticipated? Are additional transitions with existing alternatives anticipated ?

c. Where a transition has been made , particularly to climate

- friendly alternatives, w hat benefits have you experienced from making the change ?

d. What a re the b arriers precluding transition to safer alternatives?