Where Is the Planned Vulcan Comal Quarry?

Vulcan Materials plans to set up a 1500-acre open-pit limestone quarry in a residential area of central Comal County, located between Bulverde, Spring Branch, Garden Ridge, and New Braunfels.


  • Nearly three miles across
  • One mile fronting SH 46
  • 1½ miles fronting FM 3009
  • Less than one mile from FM 1863
  • ¼ mile from Beck Road

Carcinogenic Dust

All gravel quarries create and emit dust particles strongly associated with health problems such as lung cancer,1 heart disease,2 stroke,3 and reproductive issues.4 The finest particles are invisible and affect residents living miles away from the actual quarry site.

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Truck Traffic

With the additional gravel-hauling traffic, expect to see an estimated 444 truck loads per hour in the surrounding area. The increased truck traffic will make our roads more dangerous and lengthen travel times. Roadways most impacted will be SH 46, FM 3009, FM 1863, and Beck Road.

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Property Values

According to studies, properties within a five-mile radius of a new quarry lose up to 20 percent of their market value.5,6 Over 12,000 people live in the surrounding area. Property valuation losses are estimated at over $100 million.

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Water Resources

The Vulcan quarry will affect local wells, water levels, and water quality. Impact will come from blasting, destruction of caves, increased storm runoff, and hazardous chemicals entering the water supply.

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News Updates & Info

Preparing for the Contested Case Hearing


Resources and tools to prepare your contested case hearing request, review your legal options, attend upcoming workshops, and continue the fight against the proposed Comal County Vulcan quarry.

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Concrete Ready-Mix Batch Plant

Concrete Plant Proposed in Spring Branch


TCEQ is holding a public meeting on October 1, 2018 to discuss the permit application by Tex-Mix Partners to set up a concrete plant in Spring Branch near US Highway 281 and Rebecca Creek Road (between FM 306 and FM 311).

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Candidate Questionnaire Sent in Four Key Races


In the interest of better informing citizens on quarry-related issues, we have developed and sent a candidate questionnaire to eight state and local candidates running in the upcoming November 2018 general election.

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All News Updates & Info

Events & Meetings

Preparing for the Contested Case Hearing


Resources and tools to prepare your contested case hearing request, review your legal options, attend upcoming workshops, and continue the fight against the proposed Comal County Vulcan quarry.

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Spring Clean Yard Sale & Market Comal County Vulcan Quarry

Fall Yard Sale & Market


Saturday, September 29: FM 3009 neighborhood yard sale and market to raise funds to Stop 3009 Vulcan Quarry in Comal County. Donate quality garage sale items and shop for holiday decor, antiques, tools, appliances, kitchen wares, clothing, jewelry, music and more!

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Concrete Ready-Mix Batch Plant

Concrete Plant Proposed in Spring Branch


TCEQ is holding a public meeting on October 1, 2018 to discuss the permit application by Tex-Mix Partners to set up a concrete plant in Spring Branch near US Highway 281 and Rebecca Creek Road (between FM 306 and FM 311).

Read More

All Events & Meetings