220 ILCS 5/8-505.5: Work on natural gas regulator or manometer.

The Commission shall require, under such rules as it may prescribe, a public utility that is performing work on a natural gas regulator or manometer containing mercury that is used to provide natural gas service to test the immediate area around the regulator or manometer for mercury before and after work is performed using testing instruments of the type approved by the Commission. Copies of the test results, if requested, shall be provided to the occupant or owner of the property upon which the regulator or manometer is located at the time the work is performed. The test results shall be available for inspection by the Commission.