ROCKLAND, Maine — Installation of a pair of 950-foot pipelines is ongoing at the city’s quarry landfill in an effort to reduce odors.

The project began Tuesday and is expected to take approximately two weeks to complete. The city cautioned residents in a news release that the excavation work at the landfill could create some additional odors.

The cost of the project is $57,000. The pipelines will be buried underneath debris and cover material used at the landfill and then are expected to collect methane gas that is being generated under the surface. That methane is piped to the surface and is burned.

This is the second phase of the gas collection project. The first phase involved a series of 200-foot pipelines being installed during the summer of 2010. Those are now well below the surface as more demolition debris and cover material have accumulated.

The city has used the former lime quarries for trash disposal for decades. During the past 25 years, the disposal has been limited largely to demolition debris. Regular trash is sent to the Penobscot Energy Recovery Company incinerator in Orrington.