Markets & Economy Clean Harbors (CLH) Bets $470 Million on EnviroServe — Will the Synergies Pay Off? September 7, 2026 · 7:03 pm 1 sources Image: Yahoo Finance ad slot · in-content video 16:9 Coverage More coverageClean Harbors (CLH) Bets $470 Million on EnviroServe — Will the Synergies Pay Off?Yahoo Finance · September 7, 2026 19:03