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f § ~as.si (c) Prior to granting approval (or the plugging and abandonment of a Class III well the Director shall consider the following in(ortnation: (I) The type and number of plugs to be used; (2) The placement of each plug including the elevation o(the top and bottom; (3) The type, grade. and quantity of cemem to be used, (4) The method of placement of the plugs; and (5) The procedure to be used to meet the re- gwrements of ¢ 146.10(c). (Clean Water An. Sore Drinking Water Aci. Clean Air Aci, Resource Conservation and Recovery Act. J2 U.S C. 6905, 691?. 6925. 6927. 697J) 1J5 FR J250o, June 2J. 1930, as amended at J6 FR 43163, Aug ?7, 19ft I; J7 FR 5001, Feb. 3. 198?; 38 FR W29i. Apr. I. 19331 Subpart E-Criteria and Standards Applicable to Class IV Injec- tion Wells [Reserved] Subpart F-Criteria and Standards Applicable to Class V Injec- tion Wells § 148.51 Applicability. This subpar sets (onh criteria and standards (or underground injection control programs to regulate all injection not regulated in subparts B, C, D, and E. (a) Generally, wells covered by This subpar in- ject non-hazardous Buids into or above (omntians that contain underground sources of drinking water. h includes all wells listed in § 146.5(e) bin is not limited to those types of injection wells. Ih) It also includes wells nut covered m Class IV that in)ect radioactive matenal fisted in 10 CFR pan 20, appendix B, table 11, column ?. IJS FR -02500, June '_J, 1980. u amended m -07 FR tOp 1. Feb. i, 19821 Subpart G-Criteria and Standards Applicable to Class I Hazard- ous Waste Injection Wells Source. Si FR 281 J8. July 26, 1988, unless omerw ise nmed. § 146.51 Applicability (a) This subpar establishes criteria and stand ards (or underground in)ection control programs to regulate Clots 1 hazardous waste injection wills. Unless otherwise noted this subpar supplements the requirements n( subpar A and applies instead of subpar B to Class 1 hazardous wore injection wells. lb) Defimrinns. Cane of inJJuence means that area around the well within which increased injection zone pres- sures caused by in)ecuon into the hazardous waste injection well would be sufficient to drive Buids into an underground source of drinking water (USDW). 6tisling w'e!I means a Class 1 well which was authorized prior to August 25, 1986, by an ap- proved Stale program. or an EPA-administered program or a well which has become a Class 1 well as a result o(a change in the definition of the in)ected waste which would render the waste haz- ardous under § 261.3 of this pan. Lijecuon imervu! means that pan of the injec- tion zone in which the well is screened, or m which the waste is otherwise directly emplaced. New xr/! means any Class I hazardous warm injection well which is not an existing well Transmisave fiiulr ar frarmre is a fault or (mc- mrc that has su(Bcient permeability and vertical extem to allow Buids to move between formations. § 146.62 Minimum criteria for sling. (a) All Class I hazardous wale injection wells shall be sited such that they inject into a formation that is benemh the lowermost formatmn containing within one quaver mile of the well bore an under- ground source ofdrinking water. (b) The siting of Class I hazardous waste in)ec- tion wells shall be limited to areas that are geo- logically swmble. The Director shall deterrmne geologic suitability based upon: (I) An analysts of the structural and stmti- graphic geology, the hydrogeology, and the seis- micity of the region; (2) An analysis of the local geology and hydrogeology o(the well rile, including, al a mini- mum, derailed information regarding stratigmphy, structure and rock properties, aquifer hydrodynamics and mineral resources; and (3) A determination that the geology of the area can be described con lidently and Thal limits of waste (me and transport can be accurately pre- dicted through the use of models. (c) Class I hazardous waste mJection wells shall be sited such that: (I) The injection zone has sufficient perneabil- ity, porosity, thickness and areal extent to prevent migration a( Buids into USDWS. (2) The confining zone: (i) Is laterally continuous and free of [ransecting. transmissive faults or (maures over an area suffciem io prevenet the movement of Buids imo a USDW; and (ii) Contains at least one (onnation of sufficient [hmkness and with lithologic and stress chamcter- isties capable of preveming vertical propagation of fractures. 16