Clean Harbors (NYSE: CLH) reported earnings on May 2. Here are the numbers you need to know.

The 10-second takeaway
For the quarter ended March 31 (Q1), Clean Harbors beat expectations on revenues and beat expectations on earnings per share.

Compared to the prior-year quarter, revenue grew significantly and GAAP earnings per share expanded significantly.

Margins grew across the board.

Revenue details
Clean Harbors tallied revenue of $572.0 million. The 13 analysts polled by S&P Capital IQ predicted a top line of $555.7 million on the same basis. GAAP reported sales were 32% higher than the prior-year quarter's $435.0 million.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
EPS came in at $0.60. The 13 earnings estimates compiled by S&P Capital IQ predicted $0.57 per share. GAAP EPS of $0.60 for Q1 were 40% higher than the prior-year quarter's $0.43 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
For the quarter, gross margin was 30.0%, 190 basis points better than the prior-year quarter. Operating margin was 10.8%, 170 basis points better than the prior-year quarter. Net margin was 5.6%, 40 basis points better than the prior-year quarter.

Looking ahead
Next quarter's average estimate for revenue is $542.7 million. On the bottom line, the average EPS estimate is $0.63.

Next year's average estimate for revenue is $2.25 billion. The average EPS estimate is $2.56.

Investor sentiment
The stock has a four-star rating (out of five) at Motley Fool CAPS, with 309 members out of 327 rating the stock outperform, and 18 members rating it underperform. Among 88 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 83 give Clean Harbors a green thumbs-up, and five give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Clean Harbors is outperform, with an average price target of $71.89.