How can I find recorded pits, quarries and petroleum wells near a Thunder Bay home?

The Province's Find Pits and Quarries map shows the sites licensed or permitted under the Aggregate Resources Act, including aggregate permits and wayside permits, and can count the sites near a point you choose. The Province says a pit on private land in a part of Ontario not regulated under the Act may not appear; Ontario Regulation 244/97 lists the City of Thunder Bay among the designated parts. A licence on the map doesn't mean a site is digging today, and a newly approved site can take time to appear.

The map covers aggregate pits and quarries, that is sand, gravel and bedrock; it is not a map of mines. The petroleum wells dataset records wells drilled for oil or gas, for salt, or for storing hydrocarbons underground, across Ontario. Both are records of what was licensed or drilled, not a history of every use of a piece of land: a blank result is not proof that a Thunder Bay lot was never a pit, a dump or a factory.

• Find Pits and Quarries: the Province's map of aggregate licences and permits
• Ontario Regulation 244/97: the parts of Ontario designated under the Aggregate Resources Act (Schedule 4)
• Petroleum wells dataset: well locations, on the Ontario Data Catalogue

Past land use nearby runs for any Ontario address. The free check measures the distance to the nearest mapped aggregate site and petroleum well on the spot. The full report adds waste management sites and federal contaminated sites to the same group. None of it is a soil test or an environmental site assessment.

Free check: pick “Past land use nearby” See the sample report