The Company has recorded the following regulatory assets and liabilities:



	At September 30
	2018			2017
	(Thousands)
Regulatory Assets(1):
Pension Costs(2) (Note H)	$	62,703		$	125,175
Post-Retirement Benefit Costs(2) (Note H)	11,160			13,886
Recoverable Future Taxes (Note D)	115,460			181,363
Environmental Site Remediation Costs(2) (Note I)	20,308			19,665
Asset Retirement Obligations(2) (Note B)	15,495			12,764
Unamortized Debt Expense (Note A)	15,975			1,159
Other(3)	13,044			18,827
Total Regulatory Assets	254,145			372,839
Less: Amounts Included in Other Current Assets	(9,792		)	(15,884		)
Total Long-Term Regulatory Assets	$	244,353		$	356,955



	At September 30
	2018			2017
	(Thousands)
Regulatory Liabilities:
Cost of Removal Regulatory Liability	$	212,311		$	204,630
Taxes Refundable to Customers (Note D)	370,628			95,739
Post-Retirement Benefit Costs (Note H)	134,387			102,891
Amounts Payable to Customers (See Regulatory Mechanisms in Note A)	3,394			—
Other(4)	69,781			44,884
Total Regulatory Liabilities	790,501			448,144
Less: Amounts included in Current and Accrued Liabilities	(60,819		)	(34,059		)
Total Long-Term Regulatory Liabilities	$	729,682		$	414,085

(1)

The Company recovers the cost of its regulatory assets but generally does not earn a return on them. There are a few exceptions to this rule. For example, the Company does earn a return on Unrecovered Purchased Gas Costs and, in the New York jurisdiction of its Utility segment, earns a return, within certain parameters, on the excess of cumulative funding to the pension plan over the cumulative amount collected in rates.


(2)	Included in Other Regulatory Assets on the Consolidated Balance Sheets.


(3)	$9,792 and $15,884 are included in Other Current Assets on the Consolidated Balance Sheets at September 30, 2018 and 2017, respectively, since such amounts are expected to be recovered from ratepayers in the next 12 months. $3,252 and $2,943 are included in Other Regulatory Assets on the Consolidated Balance Sheets at September 30, 2018 and 2017, respectively.


(4)	$57,425 and $34,059 are included in Other Accruals and Current Liabilities on the Consolidated Balance Sheets at September 30, 2018 and 2017, respectively, since such amounts are expected to be recovered from ratepayers in the next 12 months. $12,356 and $10,825 are included in Other Regulatory Liabilities on the Consolidated Balance Sheets at September 30, 2018 and 2017, respectively.