1 EXHIBIT 11 Statement Re Computation of Per Share Earnings OHM CORPORATION COMPUTATION OF PER SHARE EARNINGS (In Thousands, Except Per Share Data) Three Months Ended Six Months Ended June 30, June 30, ------------------------- ---------------------------- 1996 1995 1996 1995 ---- ---- ---- ---- PRIMARY: Average Shares Outstanding 26,772 20,100 26,729 17,903 Net effect of dilutive stock options and warrants-- based on the treasury stock method 58 493 28 232 ------- ------- ------- ------- Total 26,830 20,593 26,757 18,135 ======= ======= ======= ======= Net Income $ 2,379 $ 234 $ 3,709 $ 1,521 ======= ======= ======= ======= Per Share Amount $ 0.09 $ 0.01 $ 0.14 $ 0.08 ======= ======= ======= ======= FULLY DILUTED: (1) Average Shares Outstanding 26,772 20,100 27,729 17,903 Net effect of dilutive stock options and warrants-- based on the treasury stock method 58 623 28 553 ------- ------- ------- ------- Total 26,830 20,723 26,757 18,456 ======= ======= ======= ======= Net Income $ 2,379 $ 234 $ 3,709 $ 1,521 ======= ======= ======= ======= Per Share Amount $ 0.09 $ 0.01 $ 0.14 $ 0.08 ======= ======= ======= ======= <FN> (1) Fully dilutive effect of stock options and warrants on per share amounts for the three and six months ended June 30, 1996 and 1995, has not been presented in the statement of income since any reduction of less than 3% in the aggregate need not be considered as dilution.