Odor Control Covers from Industrial & Environmental Concepts can help achieve a high containment of odors from biosolids tanks and wastewater ponds where hydrogen sulfide is a problem. The covers are designed with an impermeable flexible membrane that keeps odors contained, but still allows access for routine operations and maintenance activities by the operator. They are built with stainless steel hardware and a UV-resistant membrane, and are designed for aerobic and anaerobic systems with tanks or earthen basins. They accommodate mixers, piping and virtually any in-basin equipment. 952/829-0731; www.ieccovers.com