Cache Environmental Laboratories, PC (CEL) is a full-service engineering and technology firm specializing in anaerobic digestion, biosolids and residuals management, industrial pretreatment, drinking water treatment, and municipal wastewater engineering. At CEL, we focus on cost-effectively meeting our client's needs to achieve sustainable environmental stewardship. Our business activities include the development of computer-based environmental and public health decision-making tools and environmental risk management consulting services. CEL provides multidisciplinary services to diverse markets, including federal, state, and local governments, as well as to private industry.