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###### Environmental Protection Agency

          - [FRL-8001-6]

# AGENCY:

Environmental Protection Agency (EPA).

# ACTION:

Notice of proposed determination of adequacy.

# SUMMARY:

The U.S. Environmental Protection Agency (EPA) Region 5 is proposing to approve a modification to Illinois' approved municipal solid waste landfill (MSWLF) permit program. The modification allows the State to issue research, development and demonstration (RD&D) permits to owners and operators of MSWLF units in accordance with its State law and regulations.

# DATES:

All comments on Illinois' application for approval of its research, development and demonstration permit modification must be received by close of business on December 23, 2005.

# ADDRESSES:

                        Written comments should be sent to Donna Twickler, Waste Management Branch (Mail code: DW-8J), U.S. EPA Region 5, 77 West Jackson Boulevard, Chicago, IL 60604, telephone: (312) 886-6184. Comments may also be submitted electronically to:                         *twickler.donna@epa.gov*                         or by facsimile at (312) 353-4788. You may examine copies of the relevant portions of Illinois' regulations during normal business hours at U.S. EPA Region 5.                    

# FOR FURTHER INFORMATION CONTACT:

                        Donna Twickler, Waste Management Branch (Mail code DW-8J), U.S. EPA Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, telephone (312) 886-6184,                         *twickler.donna@epa.gov*.                    

# SUPPLEMENTARY INFORMATION:

## A. Background

                    On March 22, 2004, U.S. EPA issued a final rule amending the municipal solid waste landfill criteria in 40 CFR part 258 to allow for research,                           ( print page 70842)                        development and demonstration (RD&D) permits (69 FR 13242). This rule allows for variances from specified criteria for a limited period of time, to be implemented through State-issued RD&D permits. RD&D permits are only available in States with approved MSWLF permit programs which have been modified to incorporate RD&D permit authority. While States are not required to seek approval for this new provision, those States that are interested in providing RD&D permits to owners and operators of MSWLFs must seek approval from U.S. EPA before issuing such permits. Approval procedures for new provisions of 40 CFR part 258 are outlined in 40 CFR 239.12.                

Illinois MSWLF permit program was approved on January 3, 1994 (59 FR 86). On September 21, 2005, Illinois applied for approval of its RD&D permit provisions. Illinois submitted its rules under R05-1 for review.

## B. Decision

After a thorough review, U.S. EPA Region 5 is proposing that Illinois' RD&D permit provisions as defined under Illinois rule R05-1 are adequate to ensure compliance with the Federal criteria as defined at 40 CFR 258.4.

Authority:This action is issued under the authority of section 2002, 4005 and 4010(c) of the Solid Waste Disposal Act, as amended, 42 U.S.C. 6912, 6945 and 6949(a).

Dated: November 16, 2005.

Norman Niedergang,

Acting Regional Administrator, Region 5.

[FR Doc. 05-23228 Filed 11-22-05; 8:45 am]

BILLING CODE 6560-50-P