According to Sirhan, the tests were completed between April 1999 and July 2000. Ruff and Towel say the claims against them are preposterous. Ruff and Towel, who have a combined 89 years of experience in the printing business, say they know better than to dump chemicals down a drain. There are two pipes in the drain. Ruff said one pipe is connected to a sink that is in the print shop.
Workers use the sink to wash their hands.
The pipe carries the water from the sink directly to the settling compartment. The other pipe is connected to the city sewer system. There are several inches of space between the sewer pipe and the settling compartment floor, however. The only way that waste water would flow into the sewer pipe is if the settling compartment quickly fills up. Otherwise, the waste water pools on the settling compartment floor.