Property value impacts occasioned by aggregate extraction operations - Appraisal Institute of Canada
The impact of opening a quarry in the area could decrease property values by 12-20 million based on current assessed property values. This is a conservative estimate based on the assumption that the dust and noise are controlled, the water is not contaminated, and the visual impact cannot be seen.
The local community will lose more money than this operation will ever give back.
Market prices for the products listed are $20-50/tonne. With the sand and gravel on the low end and boulders on the high end. Their estimate is 40,000 tonne per year which would gross approximately $1.2 million a year.
This money wont stay locally. Its just stealing wealth from rural BC to the already rich.