40 CFR § 27.29 - Sanctions.
(1) Failing to comply with an order, rule, or procedure governing the proceeding;
(2) Failing to prosecute or defend an action; or
(3) Engaging in other misconduct that interferes with the speedy, orderly, or fair conduct of the hearing.
(b) Any such sanction, including but not limited to those listed in paragraphs (c), (d), and (e) of this section, shall reasonably relate to the severity and nature of the failure or misconduct.
(c) When a party fails to comply with an order, including an order for taking a deposition, the production of evidence within the party's control, or a request for admission, the presiding officer may -
(1) Draw an inference in favor of the requesting party with regard to the information sought;
(2) In the case of requests for admission, deem each matter of which an admission is requested to be admitted;
(3) Prohibit the party failing to comply with such order from introducing evidence concerning, or otherwise relying upon, testimony relating to the information sought; and
(4) Strike any part of the pleadings or other submissions of the party failing to comply with such request.
(d) If a party fails to prosecute or defend an action under this part commenced by service of a notice of hearing, the presiding officer may dismiss the action or may issue an initial decision imposing penalties and assessments.
(e) The presiding officer may refuse to consider any motion, request, response, brief or other document which is not filed in a timely fashion.