Rule 68a. Manufactured gas plant site records shall be retained for a minimum of 10 years past an Environmental Protection Agency (EPA) or Michigan Department of Environment, Great Lakes, and Energy (EGLE) approval of the completed remediation or 10 years after the final remediation amounts have been approved by the commission, whichever is longer. The company shall offer to submit technical documents supporting the remedial activities to the commission before their destruction.
Mich. Admin. Code R. 460.2568a