Have you been searching for a stock that might be well-positioned to maintain its earnings-beat streak in its upcoming report? It is worth considering Tetra Tech (TTEK) , which belongs to the Zacks Pollution Control industry.This consulting and engineering services company has seen a nice streak of beating earnings estimates, especially when looking at the previous two reports. The average surprise for the last two quarters was 6.05%.For the most recent quarter, Tetra was expected to post earnings of $1.31 ...