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, ------------------------ ----------------------- 1995 1994 1995 1994 ---- ---- ---- ---- PRIMARY: Average Shares Outstanding 20,100 15,578 17,903 15,559 Net effect of dilutive stock options and warrants-- based on the treasury stock method 493 634 232 648 ------- ------- ------- ------- Total 20,593 16,212 18,135 16,207 ======= ======= ======= ======= Net Income $ 234 $ 2,069 $ 1,521 $ 2,874 ======= ======= ======= ======= Per Share Amount $ 0.01 $ 0.13 $ 0.08 $ 0.18 ======= ======= ======= ======= FULLY DILUTED: (1) Average Shares Outstanding 20,100 15,578 17,903 15,559 Net effect of dilutive stock options and warrants-- based on the treasury stock method 623 634 553 648 ------- ------- ------- ------- Total 20,723 16,212 18,456 16,207 ======= ======= ======= ======= Net Income $ 234 $ 2,069 $ 1,521 $ 2,874 ======= ======= ======= ======= Per Share Amount $ 0.01 $ 0.13 $ 0.08 $ 0.18 ======= ======= ======= ======= <FN> (1) Fully dilutive effect of stock options and warrants on per share amounts for the three and six months ended June 30, 1995 and 1994, has not been presented in the statements of income since any reduction of less than 3% in the aggregate need not be considered as dilution.