; (v) planting or seeding of deeply rooted, regionally appropriate perennial grasses and wildflowers, including milkweed, to enhance habitat; (vi) removing shallow-rooted grasses from planting and seeding mixes, except for use as nurse or cover crops; or (vii) obtaining expert training or assistance on wildlife and pollinator-friendly practices, including— (I) native plant identification; (II) establishment and management of regionally appropriate native plants; (III) land management practices; and (IV) integrated vegetation management. (C) Savings clause Nothing in this section exempts an operator from compliance with the applicable requirements under this chapter or any applicable regulations promulgated under this chapter. (D) Consultation (i) Available guidance In developing such alternative methods, an operator shall consult any available guidance issued by— (I) the Secretary; or (II) an applicable State agency carrying out compliance activities on behalf of the Secretary in accordance with section 60105. (ii) Leading industry practices In the absence of the guidance described in clause (i), an operator may consult leading industry practices and guidance to develop and implement such alternative methods. . 14. Study on composite materials for pipelines (a) Study on use of composite materials Not later than 2 years after the date of enactment of this Act, the Secretary of Transportation shall complete a study assessing the potential and existing use of pipelines constructed with composite materials to safely transport hydrogen and hydrogen blended with natural gas. (b) Study considerations In completing the study under subsection (a), the Secretary shall consider— (1) any commercially available composite pipeline materials; (2) any completed or ongoing tests and data regarding composite pipeline materials available to the Secretary or other Federal agencies