Exhibit No. 11 HARDING LAWSON ASSOCIATES GROUP, INC. Computation of Per Share Earnings (In thousands, except per share data) (Unaudited) Three Months Ended Nine Months Ended Feb. 28, Feb. 29, Feb. 28, Feb. 29, 1997 1996 1997 1996 - -------------------------------------------------------------------------------- PRIMARY Average shares outstanding 4,942 4,845 4,938 4,817 Net effect of dilutive stock options based on the treasury stock method (or modified treasury stock method) using the average market price 31 21 25 30 - -------------------------------------------------------------------------------- TOTAL 4,974 4,866 4,963 4,847 ================================================================================ Net income $ 462 $ 79 $1,438 $1,973 ================================================================================ Net income per share $ .09 $ .02 $ .29 $ .41 ================================================================================