Supersonic shockwaves shook the structural integrity of Charlie Hamblen’s historic Maine farmhouse more than a dozen times last year, traveling over half a mile from high-intensity blasts at a nearby industrial quarry. The farmhouse, a remnant of Maine’s agricultural heritage, now stands on the front lines of a modern industrial surge. The quarry is one of two active sites in Gorham, a vibrant and rapidly expanding town of nearly 20,000 residents located just west of Portland. The frequent tremors felt by residents like Hamblen are emblematic of a broader, more complex trend spanning the state of Maine in recent years: a construction aggregate industry that is booming, fueled in significant part by the accelerating impacts of climate change.
As sea levels rise and extreme weather events become more frequent, property owners along Maine’s jagged coast are increasingly turning to "hard armoring"—the construction of massive stone walls and riprap barriers—to protect their land from erosion and flooding. This surge in coastal fortification has created an unprecedented demand for crushed rock, sand, and gravel, leading to a proliferation of quarry permits and expansions that are now clashing with the quiet residential life of inland communities.
The Economic Engine of the Aggregate Industry
The scale of the expansion is reflected in recent data from the Maine Department of Environmental Protection (DEP). According to the department, the number of permits issued to develop new quarries has more than tripled over the past five years compared to the previous decade. This uptick is not merely a local anomaly but part of a regional shift across New England.
Data published by the U.S. Geological Survey (USGS) highlights the economic magnitude of this growth. The total value of crushed rock, gravel, and sand produced at Maine quarries has doubled within a remarkably short window. In 2021, the industry’s value hovered around $100 million; by 2024, that figure had ballooned to more than $220 million. While the state does not track the specific weight of every ton of material extracted, the financial data suggests a massive increase in volume to meet the needs of both private development and public infrastructure.
The demand is driven by a convergence of factors. Beyond the immediate need for shoreline stabilization, Maine is experiencing a steady increase in residential construction as people migrate to the state, alongside recurring annual requirements for road maintenance and the expansion of public facilities. However, it is the climate-amplified boom in stone walls—specifically riprap stabilization—that has caught many communities off guard.
A Chronology of Climate-Driven Demand
The current crisis can be traced back to a series of destructive winter storms that struck Maine between 2022 and 2024. A trio of particularly severe events inundated the central Maine foothills and slammed the coast, illuminating the state’s extreme vulnerability to climate change-fueled surges. In the aftermath of these storms, the number of permit applications for seawall projects skyrocketed.
The surge was facilitated by an emergency permitting provision in state statute, which allowed property owners to bypass traditional, lengthy review processes to conduct "emergency repairs." Simultaneously, a significant influx of federal disaster funds from the Federal Emergency Management Agency (FEMA) provided the financial capital for these projects. According to a DEP analysis, applications for shoreline stabilization permits nearly tripled, rising from 118 in 2022 to 313 in 2024. David Madore, a spokesperson for the DEP, noted that while the state cannot precisely categorize every project, the vast majority were for "riprap stabilization"—the use of heavy stone slabs and crushed rock to form defensive walls.
As the coastal demand peaked, the inland quarries responsible for providing the raw materials began to feel the pressure to expand. In Gorham, the Shaw Brothers Construction company sought to expand its Brickyard Quarry, a move that would bring industrial activity closer to hundreds of existing homes. "If they expand this quarry, we figure it’s going to impact at least another 300 existing houses, let alone the new houses being built," Charlie Hamblen noted. The tension led Hamblen to run for and win a seat on the town council in 2025, campaigning on the need for stricter local oversight.
The Regulatory Vacuum and Local Pushback
Maine’s state-level regulations on quarries are relatively sparse. The DEP monitors pit size, dust emissions, and equipment exhaust, but it offers little in the way of protection against the seismic impacts of blasting or the frequency of industrial noise. This regulatory vacuum has forced municipalities to take matters into their own hands.
In Gorham, the debate over the Brickyard Quarry expansion has become a focal point for local governance. Shaw Brothers owner Dan Shaw has argued that the expansion is a necessity for the state’s growth. "We need quarries for construction in Maine," Shaw told the planning board. "We need concrete. We need hospitals. We need roads." He further emphasized that his company is already "regulated to the hilt" and has made efforts to modernize, including powering operations via a nearby solar farm.
However, residents remain skeptical, citing plumes of dust and the refusal of contractors to share seismic data from property lines. This dissatisfaction has sparked a movement toward local moratoriums. Towns like Winthrop have adopted some of the most stringent mineral extraction regulations in the state, including caps on the number of annual blasts and heightened monitoring requirements. South Thomaston followed suit in June 2026, adopting similar provisions after a controversial expansion request from a local quarry owner who also served on the planning board.
The "Domino Effect" of Shoreline Armoring
While inland towns struggle with the source of the stone, coastal towns are grappling with the consequences of its placement. In Camden, a landslide referendum in June 2026 approved a 180-day moratorium on all coastal shoreline armoring projects. The ban was a direct response to the "domino effect" of seawall construction.
Scientific research has long demonstrated that hard infrastructure like seawalls can cause collateral damage to neighboring properties. When wave energy hits a stone wall, it does not dissipate; instead, the force ricochets along the coast, colliding with unprotected beaches, bluffs, or marshes. This process hastens erosion on adjacent lands, often forcing those neighbors to build their own walls in a self-perpetuating cycle of coastal hardening.
Jeremy Martin, Camden’s planning and development coordinator, highlighted that the sheer volume of stone being trucked in was also damaging public infrastructure, such as the roads leading to boat launches. Furthermore, seawalls can halt the natural pattern of erosion that backfills sand onto beaches, potentially destroying coastal habitats over time. "It impacts the natural environment, abutting property owners, and public infrastructure," Martin said, explaining the overwhelming public support for the moratorium.
Shifting Toward Nature-Based Solutions
The surge in hard armoring has prompted a policy shift at the state level. In early 2025, the Maine DEP updated its permitting process to prioritize "nature-based" solutions. These methods involve using native plants, biodegradable materials, and regenerative sediment to stabilize shores rather than inert rock.
These new rules add more stringent requirements for hard infrastructure, effectively slowing the pace of seawall construction. By 2025, the number of permits for shoreline stabilization had dropped to 190, a significant decrease from the storm-driven peak of 313 the year prior. Craig Coolidge, an engineer and president of Summit Geoengineering, noted that while the vision for nature-based solutions is sound, the engineering demands of high-energy coastal zones often still require the strength of armored infrastructure. "The vision was good, but the execution is just not there yet," Coolidge observed.
Future Implications and Economic Uncertainties
The future of Maine’s quarry industry is further complicated by shifting economic forces. While the demand for private seawalls remains a factor, the Maine Department of Transportation (MDOT)—traditionally the state’s largest buyer of aggregate—announced a $400 million reduction in road construction projects due to a steep budget shortfall. This decrease in public spending could temper the industry’s growth, potentially easing the pressure on quarries to expand into residential areas.
However, the fundamental tension remains: as long as Maine continues to grow and the climate continues to change, the need for mineral resources will persist. The conflict in Gorham, Camden, and Berwick underscores a pivotal moment for the state. Municipalities are no longer willing to wait for state-level action, choosing instead to draft their own blueprints for how to balance industrial needs with property rights and environmental preservation.
The race to protect Maine’s shorelines has inadvertently sparked a battle over its inland hills. Whether through stricter ordinances, nature-based engineering, or economic shifts, the state is currently redefining its relationship with its own geology. For residents like Charlie Hamblen, the hope is that this new era of regulation will finally bring a sense of stability to both the coast and the communities that provide the stone to protect it.
