2013 Ecological Awards

NAPA’s Ecological Award competition, which started in 1971, recognizes excellence in asphalt facility operations.  NAPA selects the award recipients using rigorous criteria to evaluate the environmental friendliness of their operations.  Read more about the ecological practices of these winners in the September/October 2014 edition of Asphalt Pavement magazine. 


EE1-ArialPlantWINNER — Ecological Award for Existing Facility
Duval Asphalt Products Inc.
Jacksonville, Fla.


Duval Asphalt Product Inc.’s Plant #2 is the company’s headquarters. As a good community member, as well as a business that follows ecological best practices, Duval Asphalt Products keeps its facilities clean, beautiful, and as noise sensitive as possible.


Located in Florida, the company has planted more than 100 palm trees, and native plants and grasses on its site. The use of native plants reduces water consumption, as well as the need for pesticides and fungicides.


“We place a great deal of emphasis on maintaining a facility that is aesthetically pleasing, as well as environmentally sensitive,” Duval Asphalt Products Director of Marketing and Business Development Jennifer Ragsdale said. In addition to its commitment to landscape with native plants, in 2013, the company repainted its silos, and repainted and remodeled its scalehouse. The plant is repainted every two years to ensure it looks clean and community-friendly.


On the ecological front, Duval Asphalt Products has daily inspections to ensure environmental compliance and regularly tests its baghouse emissions. The company has developed and implemented a stormwater prevention plan (SWPP) and a spill prevention control and countermeasure plan. “In keeping with the guidelines for our SWPP program, we conduct water sampling quarterly and all spill out points have oil booms in place to catch all contamination from surface run-off,” Ragsdale said.


In addition, Duval controls dust by washing down all pavement daily, as well as the regular cleaning of equipment and structures. The company also has placed water nozzles in the discharge chute of the drag-slat conveyor to quench the dust during start-up and shut-down.



EN1-Tilcon-Mt.Hope-3WINNER — Ecological Award for New Facility
Tilcon New York Inc., an Oldcastle Materials Co.
Wharton, N.J.


The Mt. Hope Asphalt Plant is a new high-efficiency asphalt plant that replaced three inefficient plants. As the largest plant in the state, it is capable of producing 600 tons per hour and storing 2,700 tons of material in nine 300-ton hot storage silos.


The plant uses technology that makes it the most fuel efficient and environmentally clean design in the hot-mix industry. The Mt. Hope Asphalt Plant has a positive volatile capture and recovery system that eliminates blue smoke, other emissions, and asphalt odors from the process and feeds them to the combustion process as fuel. “The new plant technology has proved to be more efficient as volumes can be more efficiently monitored and adjusted at a single location. The development of the site has made it easier for the customers to facilitate quick entry and exit.  In addition, drivers can load and process tickets without leaving their vehicles.  This is so much more convenient for our customers as well as being a company safety effort,” said Scott Laudone, General Manager Asphalt Plants.


The Mt. Hope Asphalt Plant also follows a variety of other ecological best practices to conserve natural resources and limit dust and particulate emissions and exposure.


“Conserving natural resources has been a benefit with this new plant by conserving fuel and reducing emissions to the environment.  State of the art equipment was added that runs more efficiently and quietly and provides added dust control, therefore improving the site’s overall environment and further minimizing any impact on surrounding neighbors,” said Laudone.


To conserve natural resources, the plant has a speed limit of 15 miles per hour that is enforced throughout the plant, which saves fuel and prevents kicking up emissions from paved roads and unpaved surfaces. An automated ticketing system is in place to increase plant throughput and reduce emissions and fuel by reducing the time it takes to get a ticket. Anti-idling is enforced through training and signage to minimize fuel use and emissions. All vehicle fueling and dispensing of petroleum products takes place inside a fuel load off area that is engineered to contain 100 percent of the largest transfer vessel. The load off containment is directed into the above ground fuel tank concrete containment.


To limit dust, the plant’s baghouse filtration system monitors dust and reintroduces dust and particles to be recycled back into the mix. A water truck equipped with spray nozzles is used to water road surfaces to prevent dust emissions. Paved roads are also swept with a wet mechanical vacuum truck. Loader operators are trained on material transfer techniques to reduce dust.



Walsh & Kelly Inc.
Griffith, Ind.


Walsh & Kelly Inc.’s Griffith Plant is equipped with energy conservation, emissions reduction, and recycling in mind. It has a unique double rap dryer with variable speed control to increase efficiency and reduce emissions. The dryer is capable of producing 425 tons of asphalt per hour. It uses a burner that runs on natural gas and is monitored regularly to tune the burner and to keep emissions low. Emissions are further controlled with a 90,000CFM pulse jet baghouse with variable speed drive on its exhaust fan.


“Concerns for the environment and its surroundings is another priority of Walsh & Kelly,” John Rietow, Walsh & Kelly Inc. Plant Supervisor, said. “The recycling of asphalt and concrete materials gives Walsh & Kelly the ability to curb dependence on resources such as limestone and oil. Also, with the use of new innovative techniques such as warm-mix asphalts, less natural gas is used due to the lower temperature rate needed to heat the materials.”


In addition, the company mechanics strive to keep all vehicles and equipment in good working order and condition. This promotes cleaner air and less fuel consumption. To wash down facility equipment, Walsh & Kelly has a unique triple catch basin system in place.


The company recently implanted a new office recycling program. All paper, metal, and plastics are sorted into appropriate recycling bins before delivery to a local recycling company once a week. All crew vehicles also have trash cans so that trash finds its proper place in the garbage instead of on the ground during construction.


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