Page Accountants' Compilation Report 3 SCHEDULES 1. Listing of Reporting Companies 4-5 2. Total Production of CFC-11 on an Annual Basis for the Period 1931 Through 1992 from Reporting Companies 6 3. Total Production of CFC-12 on an Annual Basis for the Period 1931 Through 1992 from Reporting Companies 7 4. Estimated Error in Total Cumulative Production of CFC-11 and CFC-12 Applying the Submitted Level of Error from Reporting Companies 8 5. Total CFC-II Sales by Category for the Years 1976 Through 1992 from Reporting Companies 9 6. Total CFC-12 Sales by Category for the Years 1976 Through 1992 from Reporting Companies 10 7. Total CFC-11 and CFC-12 Sales by Hemisphere for the Period 1931 Through 1992 from Reporting Companies 11 Notes to Production and Sales of Chlorofluorocarbons 11 and 12 12
ACCOUNTANTS' COMPILATION REPORT
Alternative Fluorocarbons Environmental Acceptability Study
In connection with the research program being conducted by the Alternative Fluorocarbons Environmental Acceptability Study, we have, at your request, compiled the following schedules of production and sales data for CFC-11 and CFC-12 from responses furnished to us by participating companies. The accompanying notes are an integral part of this report.
Schedule 1
- Listing of Reporting Companies
- Total Production of CFC-11 on an Annual Basis for the Period 1931 Through 1992 from Reporting Companies
- Total Production of CFC-12 on an Annual Basis for the Period 1931 Through 1992 from Reporting Companies
- Estimated Error in Total Cumulative Production of CFC-11 and CFC-12 Applying the Submitted Level of Error from Reporting Companies
- Total CFC-11 Sales by Category for the Years 1976 Through 1992 from Reporting Companies
- Total CFC-12 Sales by Category for the Years 1976 Through 1992 from Reporting Companies
- Total CFC-11 and CFC-12 Sales by Hemisphere for the Period 1931 Through 1992 from Reporting Companies
We have compiled these tabulations from questionnaires submitted directly to us from the chemical manufacturers solicited by the Alternative Fluorocarbons Environmental Acceptability Study. We made no attempt to verify independently the information submitted in the questionnaires.
Grant Thornton
Washington, D.C.
August 3, 1993
(see accountants' compilation report)
The following is a listing of the reporting companies inclusive of any related subsidiaries and/or joint ventures that reported production and released data:
(a) Allied Canada, Inc. (Canada)(b) Quimobasicos, S.A. (Mexico)
(a) Ausimont USA (U.S.)
(a) Dohna-Chemie GmbH (Germany)
(a) Du Pont Argentina (Argentina)(b) Du Pont do Brasil S.A. (Brazil)
(c) Du Pont Canada, Inc. (Canada)
(d) Du Pont International (Europe)
(e) Du Pont S.A., de C.V. (Mexico)
(a) Elf Atochem Espana (Spain)(b) Elf Atochem North America (U.S.)
(c) Pacific Chemical Industries Pty. Ltd. (Australia)
(d) Produven (Venezuela)
(a) Hoechst Iberica (Spain)(b) Hoechst do Brasil Quimica e Farmaceutica S.A. (Brazil)
(a) African Explosives & Chemical Industries Ltd. (South Africa)
(a) Asahi Glass Co., Ltd.(b) Central Glass Co., Ltd.
c) Daikin Industries, Ltd.
(d) Du Pont-Mitsui Fluorochemicals Co., Ltd.
(e) Showa-Denko, K.K.
(a) Kali-Chemie Iberia S.A. (Spain)(b) Solvay Fluor und Derivate GmbH (formerly Kali-Chemie AG) (Germany)
(c) Solvay S.A. France (France)
Notes to Production and Sales of Chlorofluorocarbons 11 and 12
Note 1
ParticipantsBeginning in 1983 and ending in 1986, the production and sales data of Navin Fluorine Industries (India) are included in this report. Although it ceased production in 1977, Union Carbide (U.S.) continued to participate in this survey through 1989. Sales to Union Carbide reported by participants in 1990 were assumed to be sold by category and hemisphere in proportions based upon historic data reported in prior years by Union Carbide. Union Carbide was not considered a producer in 1991, and therefore, sales to Union Carbide are included as sales outside of the reporting group of companies. Chemiewerke Nünchritz GmbH (Germany) and its subsidiary reported data for the first time in 1990. Prior production by this company is not included in this report.
Note 2
Reported Production AmountsThese amounts exclude any production of a product used as an intermediate for chemical or plastic production.
Reported production amounts are determined by adding opening inventory, production and purchases from co-producers and subtracting sales to co-producers, closing inventory and amounts used or sold for chemical intermediates. The resulting figure is equal to sales.
Note 3
Change in Method of Error CalculationBeginning in 1988, the method used to calculate the estimated error in cumulative production was changed. Prior to 1988, estimated error for each year was represented as the total possible error (i.e., total of possible errors from each company), with cumulative error being the square root of the sum of the squares of the annual errors. It was determined that estimated error should be calculated by using the square root of the sum of the squares of the estimated error for each year. Estimated error for each year was recalculated using the square root of the sum of the squares of the error limit for each respondent. For years prior to 1983, error limits were not available so 5% was assumed. The change in method resulted in a decrease in the cumulative error through 1987 of 55,708 and 68,524 metric tons for CFC-11 and CFC-12, respectively.