Ohio Administrative Code › Title 3745 - Ohio Environmental Protection Agency › Chapter 3745-400 - Disposal Methods for Construction and Demolition Debris; Licensed Facilities › Section 3745-400-10 - Ground water monitoring

Current through all regulations passed and filed through July 1, 2024
(A)
			 Ground water monitoring well system. The owner or operator of any facility
			 disposing of debris on or after September 30, 1996, shall have a ground water
			 monitoring well system unless the limits of debris placement meet the criteria
			 in paragraph (B) of rule
			 3745-400-09
			 of the Administrative Code. Ground water monitoring shall be implemented
			 not later
			 than required by paragraph (R) of rule
			 3745-400-11
			 of the Administrative Code. The number, spacing, and depth of ground water
			 monitoring wells included in the monitoring well system shall be capable of
			 determining the quality of the ground water under the facility and be based on
			 site-specific hydrogeologic information contained in the site characterization
			 report required in paragraph (C) of rule
			 3745-400-09
			 of the Administrative Code. The monitoring well system is not required to be
			 capable of determining the impact of the facility on the quality of the ground
			 water beneath the facility.
The owner or operator shall describe the ground water
				monitoring well system in a plan as part of the facility design plan required
				by rule
				3745-400-07
				of the Administrative Code. The ground water monitoring well system plan shall
				be certified by a qualified ground water scientist that the system meets the
				requirements of paragraph (A) of this rule. If the ground water monitoring well
				system is constructed in phases, each phase shall be described by a qualified
				ground water scientist in the license application submitted prior to the
				placement of debris in the fill area relevant to that phase. The configuration
				of the ground water monitoring well system at all stages of the facility
				development shall be described using maps and a narrative.
(1) The ground water monitoring well system
			 shall include a sufficient number of background and downgradient monitoring
			 wells, installed at appropriate locations and depths, to yield ground water
			 samples from the first continuous significant zone of saturation underlying the
			 facility.
(2) All monitoring wells
			 shall be designed, installed, and developed in a manner that allows the
			 collection of ground water samples that are representative of ground water
			 quality in the geologic unit being monitored. The ground water monitoring well
			 system plan shall contain a drawing with specifications of the typical
			 construction of any wells not yet constructed. At a minimum, the ground water monitoring well system plan shall
			 include the following:
(a) Monitoring wells
			 shall be cased in a manner that maintains the integrity of the monitoring well
			 boreholes.
(b) The annular space,
			 i.e., the space between the borehole and the well casing, above the sampling
			 depth shall be sealed to prevent the contamination of the samples and the
			 ground water.
(c) The casing shall
			 be screened or perforated and surrounded by sand or gravel in such a way that
			 allows for the minimization of the passage of formation materials into the
			 well.
(3) Upon the
			 installation of ground water monitoring wells, a construction certification
			 report shall be submitted in accordance with rule
			 3745-400-08
			 of the Administrative Code.