Econocycle Executive (ENP10-2) The executive is a twin tank poly system that offers exceptional value for money and unmatched versatility. The Executive is an entry level treatment plant based on the tried and proven Econocycle technology. Using the same treatment process that can be found in our complete range of treatment plants, the 'Executive' gives you proven reliability and performance and thousands of satisfied customers to back it up. The 'Executive' is easily packaged and transported for difficult or remote sites and has proven to be popular alternative to concrete plants where site access or freight costs are prohibitive. For further information go to the EPA Approval Site or visit the Econocycle website.