Section 704.105  Specific Inclusions and Exclusions

a)         The following wells are included among those types of injection activities that are covered by the UIC regulations.  (This list is not intended to be exclusive but is for clarification only.)

1)         Any injection well located on a drilling platform inside territorial waters of the State of Illinois;

2)         Any dug hole or well that is deeper than its largest surface dimension, where the principal function of the hole is emplacement of fluids;

3)         Any well used by generators of hazardous waste, or by owners or operators of hazardous waste management facilities, to dispose of fluids containing hazardous waste. This includes the disposal of hazardous waste into what would otherwise be a septic system or cesspool, regardless of its capacity;

4)         Any septic tank, cesspool, or other well used by a multiple dwelling, community,  or regional system for the injection of wastes.

b)         The following are not covered by this Part:

1)         An injection well located on a drilling platform or other site that is beyond the territorial waters of the State of Illinois;

2)         An individual or single family residential waste disposal system,  such as a domestic cesspool or septic system;

3)         A nonresidential cesspool, septic system, or similar waste disposal system if such system is used solely for the disposal of sanitary waste, and has the capacity to serve fewer than 20 persons a day;

4)         An injection well used for injection of hydrocarbons that are of pipeline quality and are gases at standard temperature and pressure for the purpose of storage;

5)         Any dug hole, drilled hole, or bored shaft that is not used for the subsurface emplacement of fluids;

6)         A Class II injection well.

c)         The prohibition applicable to a Class IV injection well under Section 704.124 does not apply to injection of hazardous wastes into an aquifer or portion of an aquifer that has been exempted pursuant to 35 Ill. Adm. Code 730.104.

            BOARD NOTE:  Derived from 40 CFR 144.1(g)(1) through (g)(3) (2005).

(Source:  Amended at 31 Ill. Reg. 605, effective December 20, 2006)