"INTRODUCTION This is is the seventh report on environmental protection expenditures of the petroleum industry within the United States prepared by the American Petroleum Institute's Environmental Affairs Department. The same general format has been used for each of the surveys so that the annual expenditures for each reporting period could be compared with previous annual expenditures. It should be noted that each of the studies has had a slightly different reporting base@ because the number of cooperating companies varied from survey to survey. The ""totals"" reported here are the sums of the expenditures reported to API rather than the total expenditures of the industry. The partial expenditures reported to API have not been extrapolated to represent 100% of the industry expenditures. A facsimile of the questionnaire used in the survey is found in the back of this report. These questionnaires were submitted to the corporate offices of the member companies of API and to members of the National Petroleum Refiners Association. The companies participating in the survey had the capability to process 12.597.425 barrels of crude oil each day in 1976. This is equivalent to 79.8% of the total 1975 industry refining capacity in accordance with the tabulation contained in the March 29. 1976. issue of Oil and Gas Journal. The companies participating in this survey series have reported environmental expenditures of S11.3 billion for the 10-year period ending in 1976."
API PUBL 4287-1976 history
1976API PUBL 4287-1976 Environmental Expenditures of the United States Petroleum Industry 1967-1976