LITTLE ROCK, Ark.–(BUSINESS WIRE)– #ForPlanetandProgress–Onterris (NYSE: ONT), a global environmental solutions company solving complex challenges for planet and progress, today announced the continued growth of its long-standing partnership with one of the world’s largest integrated energy companies. The relationship, which spans more than 20 years, has grown from supporting environmental projects in Canada and the United States, to delivering specialized environmental, remediation, reclamation, emissions testing,