If you have a difficulty applying for any job posted on Harsco Clean Earths website because a disability prevents you from using the online system, Clean Earth offers the following alternate application procedure: Call toll free (833) 209-2659 and leave your name, phone number, city and state of residence. Clean Earth is a leading provider of environmental services in the United States providing remediation, disposal, recycling, and beneficial reuse solutions for hazardous and non-hazardous waste, contaminated soil, and dredged material.