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City Council Water & Sewer Subcommittee March 25, 2003 Page 5 plant was add what they called an ATAD Unit to handle the city's sludge. He advised that different cities have different methods in handling their sludge. What the city does with their sludge is spray it on a field that is 15,000 feet away to get rid of it. This is considered beneficial use as the material fertilizes the field and the sludge has been treated to a high standard. He said this ATAD unit was put in about four years ago. When you compare the City of Paris with another wastewater treatment plant you are going to have to find one off this list that has an ATAD System. Chairman Plata wanted to know what is beneficial about the ATAD Unit compared to the way other cities get rid of the sludge. Mr. Campbell explained that there are different methods of handling sludge and they all cost money, but an ATAD makes a class A sludge and you can distribute it over a field the way you want to, or you can sell it to individuals if you want to. It is another method of handling sludge. Chairman Plata said Mr. Campbell said Paris has the only ATAD System other than San Marcos and he wanted to know how Sherman gets rid of their sludge. Mr. Campbell said it is just another way of doing it, there are a lot of ways of eliminating sludge and different cities do it differently. City Manager Malone explained that these systems are put in place after an engineering study has been done and recommendations for the needs of the City of Paris made by qualified engineers. City Manager Malone said Paris is making class A sludge. He asked Mr. Campbell if the other cities were making class A sludge. Mr. Campbell said some of them may be making Class 2 sludge; he just did not know. Some cities haul it off to the landfill, which costs money. Mr. Campbell said he would find out what other cities were doing about sludge. City Attorney Schenk said you would have to compare the city's ATAD system with another system using the ATAD system regarding personnel and anything else. Mr. Campbell told Chairman Plata that all he could tell him is that the engineer recommended this system and the City Council approved and built it and the city is using it. Mr. Campbell said that page 29 is the treatment cost by fiscal year and he calculated the city's to be $1.105 per 1000 gallons. He said on the next page is a memo from the Wastewater Superintendent comparing the city's cost by fiscal year with Sugarland, Texas, showing Sugarland $1.53 per 1,000