The National Asphalt Pavement Association is the only trade association that exclusively represents the interests of the Hot Mix Asphalt producer and paving contractor on the national level with Congress, government agencies, and other national trade and business organizations. NAPA supports an active research program designed to answer questions about environmental issues and to improve the quality of HMA pavements and paving techniques used in the construction of roads, streets, highways, parking lots, airports, and environmental and recreational facilities. The Association provides technical, educational, and marketing materials and information to its members, and supplies technical information to users and specifiers of paving materials. The Association, which counts more than 1,100 companies as its members, was founded in 1955.
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Matterhorn
Creek stabilization, retaining walls, helix anchor foundations, erosion control systems fully engineered. Fish & Game, Army Corps, USDA, FEMA, Caltrans, State Water and State Architect approved. Headquartered in Santa Rosa, CA. Visit Matterhorn
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CTL Thompson
Our geotechnical engineers, geologists and scientists are seasoned professionals with backgrounds in geotechnical, civil and structural engineering; industrial hygiene; biology and geology. With such diverse resources, CTL|Thompson has built time-tested trust with our technical excellence, […]
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Geosynthetica
Geosynthetica.net is continually developing to provide comprehensive construction documents and technical support information for engineers, regulators, contractors, installers, and facility owners involved with civil and geotechnical works containing geosynthetics. Its initiation was in response to […]