Section 50.21 - Duty to Provide Information(1) A toxics user shall provide to the Department, within a reasonable time, any information the Department may request and that is deemed by the Department to be relevant in determining whether the toxics user is subject to the requirements of 310 CMR 50.00 or is in compliance with 310 CMR 50.00.(2) A toxics user shall allow personnel or authorized agents of the Department, upon presentation of credentials or other documents as may be required by law, to, without a warrant:(a) Enter at all reasonable times any premises, public or private, for the purpose of investigating, sampling, or inspecting any records, condition, equipment, practice, or property relating to activities subject to M.G.L. c. 21I;(b) Enter at any time such premises for the purpose of protecting the public health, safety, or welfare, or to prevent damage to the environment;(c) Have access to and copy at all reasonable times all records that are required to be kept pursuant to the requirements of 310 CMR 50.00.