30 CFR § 70.209 Respirable dust samples; transmission by operator.
(a) The operator shall transmit within 24 hours after the end of the
sampling shift all samples collected to fulfill the requirements of this part
in containers provided by the manufacturer of the filter cassette to:
Respirable Dust Processing Laboratory, Pittsburgh Safety and Health
Technology Center, Cochrans Mill Road, Building 38, P.O. Box 18179,
Pittsburgh, Pennsylvania 15236-0179, or to any other address designated by
the District Manager.
(b) The operator shall not open or tamper with the seal of any filter
cassette or alter the weight of any filter cassette before or after it is
used to fulfill the requirements of this part.
(c) A person certified in accordance with §70.202 (Certified person; sampling) shall properly complete the dust data
card that is provided by the manufacturer for each filter cassette. The card
shall have an identification number identical to that on the cassette used to
take the sample and be submitted to MSHA with the sample. Each card shall be
signed by the certified person and shall include that person's certification
number. Respirable dust samples with data cards not properly completed will
be voided by MSHA.
(d) All respirable dust samples collected by the operator shall be
considered taken to fulfill the sampling requirements of part 70, 71 or 90 of this title,
unless the sample has been identified in writing by the operator to the
District Manager, prior to the intended sampling shift, as a sample to be
used for purposes other than required by part 70,
71 or 90 of this title.
(e) Respirable dust samples received by MSHA in excess of those
required by this part shall be considered invalid samples.