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 March 31, ------------------------- 1995 1994 ----------- ----------- PRIMARY: Average Shares Outstanding 15,681 15,539 Net effect of dilutive stock options and warrants-- based on the treasury stock method 24 663 ------ ------ Total 15,705 16,202 ====== ====== Net Income $ 1,287 $ 805 ====== ====== Per Share Amount $ 0.08 $ 0.05 ====== ====== FULLY DILUTED: (1) Average Shares Outstanding 15,681 15,539 Net effect of dilutive stock options and warrants-- based on the treasury stock method 250 733 ------ ------ Total 15,931 16,272 ====== ====== Net Income $ 1,287 $ 805 ====== ====== Per Share Amount $ 0.08 $ 0.05 ====== ====== <FN> (1) Fully dilutive effect of stock options and warrants on per share amounts for the three months ended March 31, 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.