Tetra Tech Guides Q3 EPS $0.42-0.45 vs $0.43 Est; Guides Q3 Sales $500-540M vs $530.4M Est; Guides FY EPS $1.59-1.66, Had Seen $1.54-1.64 vs $1.62 Est; Guides FY Revenue $2-2.1B, Had Seen $1.9-2.1B vs $2.03B Est