Mississippi Code
In General
§ 49-17-21. Inspections and investigations; access to and maintenance of records; testing and sampling; monitoring equipment

The commission or its duly authorized representative shall have the power to enter at reasonable times upon any private or public property, and the owner, managing agent or occupant of any such property shall permit such entry for the purpose of inspecting and investigating conditions relating to pollution or the possible pollution of any air or waters of the state and to have access to such records as the commission may require under subsection (b) of this section.
The commission may require the maintenance of records relating to the operation of air contamination sources or water disposal systems, and any authorized representative of the commission may examine and copy any such records or memoranda pertaining to the operation of such air contamination source or water disposal system. The records shall contain such information as the commission may require. Copies of such records shall be submitted to the commission upon request.
The commission may conduct, authorize or require tests and take samples of air contaminants or waste waters, fuel, process material or other material which affects or may affect (1) emission of air contaminants from any source, or (2) waste water disposal systems. Upon request of the commission, the person responsible for the source to be tested shall provide necessary sampling ports in stacks or ducts and such other safe and proper sampling and testing facilities as may be necessary for proper determination of the emission of air contaminants. If an authorized employee of the commission during the course of any inspection obtains a sample of air contaminant, fuel, process material or other material, he shall give the owner or operator of the equipment or fuel facility a receipt for the sample obtained.
The commission may require the installation, maintenance and use of such monitoring equipment and methods at such locations and intervals as the commission deems necessary.

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