25 Pa. Code § 291.417
If required by the Department, based upon waste and site characteristics, the operator shall conduct soil-pore water monitoring and accurately characterize soil-pore water at the facility.
The provisions of this § 291.417 amended January 12, 2001, effective January 13, 2001, 31 Pa.B. 235. Immediately preceding text appears at serial page (226814).
This section cited in 25 Pa. Code § 291.411 (relating to general requirements).