§ 312.21 Results of inquiry by an environmental professional.

(a) Persons identified under § 312.1(b) must undertake an inquiry, as defined in paragraph (b) of this section, by an environmental professional, or conducted under the supervision or responsible charge of, an environmental professional, as defined in § 312.10. Such inquiry is hereafter referred to as “the inquiry of the environmental professional.”

(b) The inquiry of the environmental professional must include the requirements set forth in §§ 312.23 (interviews with past and present owners * * *), 312.24 (reviews of historical sources * * *), 312.26 (reviews of government records), 312.27 (visual inspections), 312.30 (commonly known or reasonably ascertainable information), and 312.31 (degree of obviousness of the presence * * * and the ability to detect the contamination * * *). In addition, the inquiry should take into account information provided to the environmental professional as a result of the additional inquiries conducted by persons identified in § 312.1(b) and in accordance with the requirements of § 312.22.