For the first time in 15 years, the intake pipe for the Lake Source Cooling project — a low energy system that channels deep water from Cayuga Lake to cool the University’s chilled water cooling network — will be cleaned. Since the pipes were first put in place in July 2000, so many zebra and quagga mussels have covered the pipe’s surface that the amount of water flowing into the plant has significantly decreased, according to Lanny Joyce, utilities and energy management director.