Ohio Administrative Code
Title 3745 - Ohio Environmental Protection Agency
Chapter 3745-34 - Underground Injection Control Program
Section 3745-34-55 - Logging, sampling, and testing prior to new well operation
Current through all regulations passed and filed through December 16, 2024
(A) During the drilling and construction of a new Class I hazardous waste injection well, appropriate logs and tests shall be run to determine or verify the depth, thickness, porosity, permeability, and rock type of, and the salinity of any entrained fluids in, all relevant geologic units to assure conformance with performance standards of rule 3745-34-54 of the Administrative Code and to establish accurate baseline data against which future measurements may be compared. A descriptive report interpreting results of such logs and tests shall be prepared by a knowledgeable log analyst and submitted to the director. Such logs and tests shall include:
(B) Whole cores or sidewall cores of the confining and injection zones and formation fluid samples from the injection zone shall be taken. The director may accept cores from nearby wells if the owner or operator can demonstrate that core retrieval is not possible and that such cores are representative of conditions at the well. The director may require the owner or operator to core other formations in the bore hole.
(C) The fluid temperature, pH, conductivity, pressure and the static fluid level of the injection zone must be recorded.
(D) At a minimum, the owner or operator of a Class I hazardous waste injection well shall submit for review by the director determinations or calculations of the following for the injection and confining zones:
(E) Upon completion, but prior to operation, the owner or operator shall conduct the following tests to verify hydrogeologic characteristics of the injection zone:
(F) The director reserves the right to witness all logging and testing required by this rule. The owner or operator shall submit a schedule of such activities to the director thirty days prior to conducting the initial test.