Labor Department, Mine Safety and Health Administration
This final rule revises MSHA's existing standards addressing diesel particulate matter (DPM) exposure in underground metal and nonmetal (M/NM) mines. In this final rule, MSHA changes the interim concentration limit measured by total carbon (TC) to a comparable permissible exposure limit (PEL) measured by elemental carbon (EC), which renders a more accurate DPM exposure measurement. Also, this final rule increases flexibility of compliance for mine operators by requiring MSHA's longstanding hierarchy of controls for its other exposure-based health standards at M/NM mines, but retains the prohibition on rotation of miners for compliance. Furthermore, this final rule: Requires MSHA to consider economic as well as technological feasibility in determining if operators qualify for an extension of time in which to meet the final DPM limit; deletes the requirement for a control plan; and makes conforming changes to existing provisions concerning compliance determinations, environmental monitoring and recordkeeping.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Labor Mine Safety and Health Administration 30 CFR Part 57 RIN 1219-AB29 AGENCY: Mine Safety and Health Administration (MSHA), Labor. ACTION: Final rule. SUMMARY: This final rule revises MSHA's existing standards addressing diesel particulate matter (DPM) exposure in underground metal and nonmetal (M/NM) mines. In this final rule, MSHA changes the interim concentration limit measured by total carbon (TC) to a comparable permissible exposure limit (PEL) measured by elemental carbon (EC), which renders a more accurate DPM exposure measurement. Also, this final rule increases flexibility of compliance for mine operators by requiring MSHA's longstanding hierarchy of controls for its other exposure-based health standards at M/NM mines, but retains the prohibition on rotation of miners for compliance. Furthermore, this final rule: Requires MSHA to consider economic as well as technological feasibility in determining if operators qualify for an extension of time in which to meet the final DPM limit; deletes the requirement for a control plan; and makes conforming changes to existing provisions concerning compliance determinations, environmental monitoring and recordkeeping. DATES: Effective Date: The final rule is effective on July 6, 2005. FOR FURTHER INFORMATION CONTACT: Office of Standards, Regulations, and Variances, MSHA, 1100 Wilson Blvd., Room 2350, Arlington, Virginia 22209-3939; 202-693-9440 (telephone); or 202-693-9441 (facsimile). You may obtain copies of th…
Citation: 70 FR 32868
