If the Regional Administrator determines that the grantee has failed to comply with any provision of this subpart, he may impose any of the following sanctions:
(a) The grant may be terminated or annulled under § 30.920 of this subchapter;
(b) Project costs directly related to the noncompliance may be disallowed;
(c) Payment otherwise due to the grantee of up to 10 percent may be withheld (see § 30.615-3 of this chapter);
(d) Project work may be suspended under § 30.915 of this subchapter;
(e) A noncomplying grantee may be found nonresponsible or ineligible for future Federal assistance or a noncomplying contractor may be found nonresponsible or ineligible for approval for future contract award under EPA grants;
(f) An injunction may be entered or other equitable relief afforded by a court of appropriate jurisdiction;
(g) Such other administrative or judicial action may be instituted if it is legally available and appropriate.