Tetra Tech Inc. reported earnings results for the first quarter ended December 29, 2013. Revenue in the quarter was $645.85 million compared to $658.55 million in the first quarter last year. Operating income was $43.72 million, up 4.6% compared to $41.81 million in the first quarter last year. Diluted earnings per share (EPS) were $0.42, up 2.4% compared to $0.41 in the first quarter last year. Earnings before interest, taxes, depreciation, and amortization were $59.42 million, up 9.9% compared to $54.1 million in the first quarter last year. Cash generated from operations was $41.7 million, up 135.0% compared to $17.8 million in the first quarter last year. Net income attributable to the company was $27.315 million compared to $26.224 million a year ago.

The company expects diluted EPS for the second quarter of fiscal 2014 to be in the range of $0.37 to $0.42. Revenue, net of subcontractor costs, for the second quarter is expected to range from $450 million to $500 million.

Fiscal 2014 guidance remains unchanged. Diluted EPS is expected to range from $1.60 to $1.80 and cash EPS is expected to range from $2.30 to $2.60. Revenue, net of subcontractor costs, for fiscal 2014 is expected to range from $2.1 billion to $2.3 billion.