GROUNDWATER TECHNOLOGY INC <GWTI> 3RD QTR JAN 31 Shr 19 cts vs 12 cts Net 850,000 vs 432,000 Sales 9,850,000 vs 4,783,000 Avg shrs 4,504,000 vs 3,527,000 Nine mths Shr 57 cts vs 37 cts Net 2,400,000 vs 1,281,000 Sales 25.2 mln vs 12.8 mln Avg shrs 4,233,000 vs 3,485,000