Respondent was assessed a civil penalty of $4,045 for three violations of the HMR, when it, (1) filled, offered for transportation, and transported DOT exemption/special permit cylinders that were in service beyond their authorized service life or were out of test and required requalification; (2) listed an emergency response telephone number on a shipping paper that accompanied a shipment of hazardous materials for an organization that had not accepted responsibility for providing detailed information concerning the hazardous material; and (3) failed to register with PHMSA when it transported a hazardous material that required placarding.