Inventories comprise the following:



	December 31, 2013		September 30, 2013		December 31, 2012
Gas Utility natural gas	$	69,117	$	78,950	$	51,838
Materials, supplies and other	11,558		10,711		10,023
Total inventories	$	80,675	$	89,661	$	61,861

At December 31, 2013, UGI Utilities is a party to four storage contract administrative agreements (“SCAAs”) having terms of one to three years. Three of the SCAAs are with Energy Services, Inc. (“Energy Services”), a second-tier, wholly owned subsidiary of UGI (see Note 9). Pursuant to SCAAs, UGI Utilities has, among other things, released certain storage and transportation contracts for the terms of the SCAAs. UGI Utilities also transferred certain associated storage inventories upon commencement of the SCAAs, will receive a transfer of storage inventories at the end of the SCAAs, and makes payments associated with refilling storage inventories during the terms of the SCAAs. The historical cost of natural gas storage inventories released under the SCAAs, which represents a portion of Gas Utility’s total natural gas storage inventories, and any exchange receivable (representing amounts of natural gas inventories used by the other parties to the agreement but not yet replenished), are included in the caption “Gas Utility natural gas” in the table above.

The carrying value of gas storage inventories released under UGI Utilities’ principal SCAAs at December 31, 2013, September 30, 2013 and December 31, 2012, comprising 9.8 billion cubic feet (“bcf”), 11.0 bcf and 9.1 bcf of natural gas, was $39,362, $44,366 and $27,251, respectively. In conjunction with these SCAAs, UGI Utilities held total security deposits received from its SCAA counterparties of $17,600 at December 31, 2013, and $16,500 at September 30, 2013 and December 31, 2012. These amounts are included in “Other current liabilities” on the Condensed Consolidated Balance Sheets.