Over a dozen seismic tremors shook Charlie Hamblen's old farm in Gorham, Maine last year, with each wave traveling over half a mile before reaching the building. These vibrations come from regular explosions at a nearby quarry, one of two operating in a city of nearly 20,000 people, just kilometers from the Atlantic coast. This local phenomenon illustrates the double pressure on Maine's coasts: on the one hand, the industrial expansion of quarries, and on the other, the increased risks linked to climate change.
Quarry expansion in Gorham: Local issues and immediate impacts
The two active quarries in Gorham, located on the outskirts of the city, have become a source of concern for residents. Explosions necessary for aggregate extraction generate shock waves that propagate over 800 meters, causing vibrations felt in neighboring homes. Beyond noise, these tremors can weaken old structures, as seen with Hamblen's farm, and raise public health concerns, particularly regarding sleep disturbances and stress from constant noise.
Environmentally, quarry activity releases significant amounts of dust and greenhouse gases. Each blast releases COâ and fine particles that, once carried by coastal winds, contribute to air quality degradation. Moreover, the expansion of excavated surfaces disrupts the natural habitats of coastal species and reduces the ability of dunes to absorb waves, a natural shield already compromised by sea level rise.
Municipal authorities have launched public consultations to assess operating limits and consider mitigation measures, such as vegetated buffer zones and permanent acoustic monitoring. However, decisions remain complex, as they must balance regional demand for construction materials with preserving the living environment and climate resilience.