(a) Minimum Standards. - In order to qualify for a grant under section 6106, a State one-call notification program shall, at a minimum, provide for - (1) appropriate participation by all underground facility operators, including all government operators; (2) appropriate participation by all excavators, including all government and contract excavators; and (3) flexible and effective enforcement under State law with respect to participation in, and use of, one-call notification systems. (b) Appropriate Participation. - In determining the appropriate extent of participation required for types of underground facilities or excavators under subsection (a), a State shall assess, rank, and take into consideration the risks to the public safety, the environment, excavators, and vital public services associated with - (1) damage to types of underground facilities; and (2) activities of types of excavators. (c) Implementation. - A State one-call notification program also shall, at a minimum, provide for and document - (1) consideration of the ranking of risks under subsection (b) in the enforcement of its provisions; (2) a reasonable relationship between the benefits of one-call notification and the cost of implementing and complying with the requirements of the State one-call notification program; and (3) voluntary participation where the State determines that a type of underground facility or an activity of a type of excavator poses a de minimis risk to public safety or the environment. (d) Penalties. - To the extent the State determines appropriate and necessary to achieve the purposes of this chapter, a State one-call notification program shall, at a minimum, provide for - (1) administrative or civil penalties commensurate with the seriousness of a violation by an excavator or facility owner of a State one-call notification program; (2) increased penalties for parties that repeatedly damage underground facilities because they fail to use one-call notification systems or for parties that repeatedly fail to provide timely and accurate marking after the required call has been made to a one-call notification system; (3) reduced or waived penalties for a violation of a requirement of a State one-call notification program that results in, or could result in, damage that is promptly reported by the violator; (4) equitable relief; and (5) citation of violations.