The San Luis Obispo City Planning Commission is holding a hearing on the land use and circulation elements update tomorrow. Back in January, the City Council endorsed a set of changes that council members will evaluate through the environmental review process. The city's General Plan is basically a blueprint for the city's future. In May, City officials invited the community to see some of the proposed changes at a future fair. City officials are trying to figure out how to deal with a growing population and adjust traffic within the city and on Highway 101.