The Facts About Tilcon’s Proposed Quarry Expansion

Land Use and Zoning

  • Tilcon has applied to rezone over 80 acres of land in Plainville from residential to industrial for the purpose of quarry expansion.

  • The proposed site borders residential neighborhoods and publicly accessible open space, including the Metacomet Trail.

  • Tilcon already owns over 100 additional acres in the same area, raising concerns about future expansion and cumulative environmental impact.

Tax Revenue Claims

  • Tilcon claims the change would increase tax revenue for the town but that simply isn’t true. The proposed rezoning would convert developable residential land into industrial property, resulting in a net negative fiscal impact to the town.

  • Analysis shows that residential or mixed-use development on this land would generate significantly higher long-term tax revenue than quarry operations.

  • Expanding industrial use in this area could depress surrounding property values, shift land use away from community growth priorities, and degrade neighborhood cohesion.

  • Once blasted, the land cannot be restored for residential, recreational, or commercial purposes—representing a permanent loss of tax-generating potential.

Water and Aquifer Protection

  • The proposed quarry site overlaps with a Level A Aquifer Protection Area, regulated under Connecticut law to safeguard drinking water sources.

  • Blasting, rock crushing, and other industrial uses are presumed incompatible in Level A zones unless they meet strict exemption criteria.

  • The site is located in the headwaters of the Quinnipiac River, within a critical habitat and drainage basin that flows into Long Island Sound.

  • Quarry expansion risks contaminating surface waters, wetlands, and private wells through runoff, dust infiltration, and groundwater disruption.

Wells and Public Health

  • Hundreds of nearby residents rely on private wells for drinking water which could be at risk for damage or contamination from quarry operations.

  • The Farmington Valley Health District and South Central Health District have authority over private well protection in the region.

  • Quarry activity may interfere with well yield, quality, and long-term water table stability.

Stormwater and Environmental Oversight

  • The area drains into state-regulated watersheds and falls under the jurisdiction of the DEEP Stormwater Permitting and Enforcement Program.

  • Industrial stormwater runoff could degrade wetland and riparian habitat, including Dead Wood Swamp, The Quinnipiac River, and eventual the Long Island Sound.

State Agency and Regulatory Concerns

  • The Council on Environmental Quality has previously raised concerns about quarry expansion in this region.

  • The proposal conflicts with DEEP’s Aquifer Protection Land Use Regulations and may require a detailed environmental impact evaluation.

  • The site is located within a state-designated Critical Habitat Area, meaning it supports rare, threatened, or endangered species and is subject to additional conservation review and protections.

Trail and Open Space Impact

  • The proposed quarry is adjacent to the federally designated New England National Scenic Trail (Metacomet Trail), a major recreational resource.

  • Blasting and industrial operations threaten the trail experience, viewsheds, and the ecological integrity of surrounding public lands.

  • The trail contributes to regional tourism, outdoor recreation, and quality of life in Farmington Valley and beyond.

Air Quality and Health Risks

  • Quarry operations generate silica dust, a known human carcinogen, and degrade regional air quality.

  • Blasting may release particulate matter that poses respiratory risks to nearby neighborhoods.

  • Increased heavy truck traffic would further compound emissions and noise pollution.