TTEK - Tetra Tech Inc. 2023 Q1 - Results - Earnings Call Presentation February, 02 2023 01:14 PM Tetra Tech Inc. The following slide deck was published by Tetra Tech, Inc. in conjunction with their 2023 Q1 earnings call. For further details see: Tetra Tech, Inc. 2023 Q1 - Results - Earnings Call Presentation