Office of Drug & Alcohol Policy & Compliance www.dot.gov/ost/dapc

Pipeline & Hazardous Materials Safety Administration (PHMSA) www.phmsa.dot.gov/regulation/pipeline.html

Federal Motor Carrier Safety Administration (FMCSA) www.fmcsa.dot.gov/safety-security/safety-iniatives/drugs/engtesting.htm

Federal Transit Administration www.fta.dot.gov

The Federal Aviation Administration www.faa.gov/avr/aam

Drug & Alcohol Testing Industry Association (DATIA) www.datia.org

Institute for a Drug-Free Workplace www.drugfreeworkplace.org

The Partnership for a Drug-Free America www.drugfree.org

U.S. Department of Health and Human Services & SAMHSA's National Clearing House for Alcohol & Drug Information

http://ncadi.samhsa.gov

Working Partners foa an Alcohol and Drug-Free Workplace www.dol.gov/asp