filings.toolsItem 2. Properties.
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Item 2. Properties.
Distribution, transmission and related assets
At September 30, 2018, in our distribution segment, we owned an aggregate of 70,071 miles of underground distribution and transmission mains throughout our distribution systems. These mains are located on easements or rights-of-way. We maintain our mains through a program of continuous inspection and repair and believe that our system of mains is in good condition. Through our pipeline and storage segment we owned 5,678 miles of gas transmission lines as well.
Storage Assets
We own underground gas storage facilities in several states to supplement the supply of natural gas in periods of peak demand. The following table summarizes certain information regarding our underground gas storage facilities at September 30, 2018:
| State | Usable Capacity (Mcf) | Cushion Gas (Mcf)(1) | Total Capacity (Mcf) | Maximum Daily Delivery Capability (Mcf) | ||||||||
| Distribution Segment | ||||||||||||
| Kentucky | 7,956,991 | 9,562,283 | 17,519,274 | 158,100 | ||||||||
| Kansas | 3,239,000 | 2,300,000 | 5,539,000 | 45,000 | ||||||||
| Mississippi | 1,907,571 | 2,442,917 | 4,350,488 | 31,000 | ||||||||
| Total | 13,103,562 | 14,305,200 | 27,408,762 | 234,100 | ||||||||
| Pipeline and Storage Segment | ||||||||||||
| Texas | 46,083,549 | 15,878,025 | 61,961,574 | 1,710,000 | ||||||||
| Louisiana | 411,040 | 256,900 | 667,940 | 56,000 | ||||||||
| Total | 46,494,589 | 16,134,925 | 62,629,514 | 1,766,000 | ||||||||
| Total | 59,598,151 | 30,440,125 | 90,038,276 | 2,000,100 |
| (1) | Cushion gas represents the volume of gas that must be retained in a facility to maintain reservoir pressure. |
Additionally, we contract for storage service in underground storage facilities on many of the interstate and intrastate pipelines serving us to supplement our proprietary storage capacity. The following table summarizes our contracted storage capacity at September 30, 2018:
| Segment | Division/Company | Maximum Storage Quantity (MMBtu) | Maximum Daily Withdrawal Quantity (MDWQ)(1) | |||||
| Distribution Segment | ||||||||
| Colorado-Kansas Division | 6,129,562 | 136,996 | ||||||
| Kentucky/Mid-States Division | 8,175,103 | 226,739 | ||||||
| Louisiana Division | 2,536,779 | 174,805 | ||||||
| Mid-Tex Division | 5,500,000 | 225,000 | ||||||
| Mississippi Division | 5,083,801 | 163,627 | ||||||
| West Texas Division | 5,000,000 | 161,000 | ||||||
| Total | 32,425,245 | 1,088,167 | ||||||
| Pipeline and Storage Segment | ||||||||
| Trans Louisiana Gas Pipeline, Inc. | 1,000,000 | 47,500 | ||||||
| Total Contracted Storage Capacity | 33,425,245 | 1,135,667 |
| (1) | Maximum daily withdrawal quantity (MDWQ) amounts will fluctuate depending upon the season and the month. Unless otherwise noted, MDWQ amounts represent the MDWQ amounts as of November 1, which is the beginning of the winter heating season. |
Offices
Our administrative offices and corporate headquarters are consolidated in a leased facility in Dallas, Texas. We also maintain field offices throughout our service territory, some of which are located in leased facilities.
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