PUBLIC LAW 101-549—NOV. 15, 1990 104 STAT. 2487 "LDTs OF MORE THAN 6,000 LBS. GVWR IMPLEMENTATION SCHEDULE FOR IMPLEMENTATION OF FINAL IN-USE STANDARDS 1998 1999 Model year Percent 50 100 "(6) DIESEL VEHICLES; IN-USE USEFUL LIFE AND TESTING. — (A) In the case of diesel-fueled light-duty trucks up to 6,000 lbs. GVWR and light-duty vehicles, the useful life for purposes of determining in-use compliance with the standards under section 202(g) for NOx shall be a period of 10 years or 100,000 miles (or the equivalent), whichever first occurs, in the case of standards applicable for purposes of certification at 100,000 miles, except that testing shall not be done for a period beyond 7 years or 75,000 miles (or the equivalent) whichever first occurs. "(B) In the case of diesel-fueled light-duty trucks of 6,000 lbs. GVWR or more, the useful life for purposes of determining inuse compliance with the standards under section 202(h) for NO, shall be a period of 11 years or 120,000 miles (or the equivalent), whichever first occurs, in the case of standards applicable for purposes of certification at 120,000 miles, except that testing shall not be done for a period beyond 7 years or 90,000 miles (or the equivalent) whichever first occurs.". SEC. 211. INFORMATION COLLECTION. Section 208 of the Clean Air Act (42 U.S.C. 7542) is amended to read as follows: "SEC. 208. INFORMATION COLLECTION. "(a) MANUFACTURER'S RESPONSIBILITY. —Every manufacturer of Records, new motor vehicles or new motor vehicle engines, and every manu- Reports, facturer of new motor vehicle or engine parts or components, and other persons subject to the requirements of this part or part C, shall establish and maintain records, perform tests where such testing is not otherwise reasonably available under this part and part C (including fees for testing), make reports and provide information the Administrator may reasonably require to determine whether the manufacturer or other person has acted or is acting in compliance with this part and part C and regulations thereunder, or to otherwise carry out the provision of this part and part C, and shall, upon request of an officer or employee duly designated by the Administrator, permit such officer or employee at reasonable times to have access to and copy such records. "(b) ENFORCEMENT AUTHORITY.— For the purposes of enforcement of this section, officers or employees duly designated by the Administrator upon presenting appropriate credentials are authorized— "(1) to enter, at reasonable times, any establishment of the manufacturer, or of any person whom the manufacturer engages to perform any activity required by subsection (a), for the purposes of inspecting or observing any activity conducted pursuant to subsection (a), and "(2) to inspect records, files, papers, processes, controls, and facilities used in performing any activity required by subsection
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