Diesel Particulate Matter Exposure of Underground Metal and Nonmetal Miners
mine-safety · Mine Safety and Health Administration · Published 2008-05-20 · Effective 2008-05-20 · 73 FR 29058
Document
Document number
E8-11329
Federal Register citation
73 FR 29058
CFR reference
30 CFR 57
Type
Rule
Action
Notice of enforcement of DPM final limit; withdrawal of intent to issue a proposed rule.
Category
mine-safety
Sub-agency
Mine Safety and Health Administration
Publication date
2008-05-20
Effective date
2008-05-20
Abstract
This notice informs the public of MSHA's decision to implement the diesel particulate matter (DPM) final permissible exposure limit (PEL) of 160 micrograms of total carbon (TC) per cubic meter of air (160<INF>TC</INF> g/m<SUP>3</SUP>). MSHA has developed a practical sampling strategy to account for interferences from non-diesel exhaust sources when TC is used as a surrogate for measuring a miner's exposure to DPM. The Agency will begin enforcement of the 160 TC limit under existing 30 CFR 57.5060(b)(3) on May 20, 2008. MSHA will post details of its sampling strategy on the Agency's DPM Single Source Page prior to enforcement. The sampling strategy is based on the best available scientific evidence and will be specific to each mine.