NORTHERN ILLINOIS GAS CO /IL/ /NEW/ 10-K

NICOR GAS FORM 10-K FOR 12-31-11

EXHIBIT 12.01 RATIO OF EARNINGS TO FIXED CHARGES

EXHIBIT 23.01 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM - PWC

EXHIBIT 23.01 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM - DELOITTE & TOUCHE

EXHIBIT 31.01 CERTIFICATION LINGINFELTER

EXHIBIT 31.02 CERTIFICATION EVANS

EXHIBIT 32.01 CERTIFICATION LINGINFELTER

EXHIBIT 32.02 CERTIFICATION EVANS

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