Note: This table includes waste generated by ENMAX Power's operations in Calgary and includes both construction and office waste but excludes recycled bottles and cans which are recycled from ENMAX offices.
The majority of the solid waste to landfill is comprised of clean or contaminated soil that is removed during construction operations from pole installations to transformer spill remediation. In 2009, 3,555 tonnes of soil was recorded as being transported to landfills, an increase of 2,226 tonnes over the 1,329 tonnes of soil landfilled in 2008. This increase was mainly due to an improvement in record keeping. As of January 1, 2009, the City of Calgary mandated that all soil be quantified and tested for contaminants. As a result, ENMAX's record keeping for soil disposal to landfill improved substantially.
Transformers and cables that are removed from service are filled with oil, which needs to be drained and either reused or recycled. In 2009, ENMAX Power reused approximately 45,502 litres and recycled 130,750 litres of oil, which is much like mineral oil. This makes up the majority of the total recycled liquid waste listed in the table above.