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The highly skilled team of environmental professionals in the Compliance and Technical Assistance Program (CTAP) are available weekdays to answer your environmental regulatory compliance questions or to schedule an on-site assistance consultation. Our main line is (800) 988-7901 (in-state only) or (317) 232-8172. Or, if you prefer to speak with CTAP staff in your area of the state, please call the appropriate office listed below. You may also submit a request for CTAP assistance on-line, or contact us via e-mail at firstname.lastname@example.org.