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Appendix F: Inputs into the Sea from Recreational Marine Vessels
Pages 219-220

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From page 219...
... Engines that fell under this category include lawn mowers, grass trimmers, chain saws, etc., as well as outboard engines for boats. In the 1990 EPA regulations, there was only preliminary data on hydrocarbon inputs into surface water from two-stroke engines.
From page 220...
... Data Sources and Assumptions Data on boating activity including number of two-stroke engines, average hours of use for each boating type (gasoline outboard and personal watercraft) and average horsepower was collected from the EPA Nonroad Emission Model (Jensen and Sklar, 1998~.

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