This U.S. industry comprises establishments primarily engaged in (1) operating nonhazardous waste treatment and disposal facilities (except landfills, combustors, incinerators and sewer systems or sewage treatment facilities) or (2) the combined activity of collecting and/or hauling of nonhazardous waste materials within a local area and operating waste treatment or disposal facilities (except landfills, combustors, incinerators and sewer systems, or sewage treatment facilities). Compost dumps are included in this industry. Cross-References. Establishments primarily engaged in-- ? Operating landfills for the disposal of nonhazardous solid waste--are classified in U.S. Industry 562212, Solid Waste Landfill; ? Operating combustors and incinerators for the disposal of nonhazardous solid waste--are classified in U.S. Industry 562213, Solid Waste Combustors and Incinerators; ? Collecting, treating, and disposing waste through sewer systems or sewage treatment facilities--are classified in Industry 221320, Sewage Treatment Facilities; and ? Manufacturing compost--are classified in U.S. Industry 325314, Fertilizer (Mixing Only) Manufacturing.