TITLE 62: MINING
CHAPTER I: DEPARTMENT OF NATURAL RESOURCES
PART 240 THE ILLINOIS OIL AND GAS ACT
SECTION 240.740 OTHER CONSTRUCTION REQUIREMENTS FOR CLASS II UIC WELLS
Section 240.740 Other Construction Requirements for Class II UIC Wells
a) The wellhead shall be configured to include a one quarter inch female fitting, with shut-off valve, to allow monitoring of the annulus between the production casing and the injection tubing.
b) A one quarter inch female fitting, with shut-off valve, shall be installed on the tubing to measure the injection pressure.
(Source: Amended at 18 Ill. Reg. 8061, effective May 13, 1994)