||The volume of gas needed as a permanent inventory to maintain adequate reservoir
pressures and deliverability rates throughout the withdrawal season. All native gas is
included in the base gas volume.
||A gaseous mixture of hydrocarbon compounds, the primary one being methane.
|Underground Gas Storage
||The use of sub-surface
facilities for storing gas that has been transferred from its original
location. The facilities are usually hollowed-out salt
domes, natural geological reservoirs (depleted oil or gas
fields) or water-bearing sands topped by an impermeable cap
||The volume of total natural gas storage capacity that contains natural gas available for withdrawal.
||Connecticut, Delaware, District of Columbia, Florida, Georgia, Massachusetts, Maryland, Maine, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Vermont, Virginia, and West Virginia
||Illinois, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, Tennessee, and Wisconsin
||Arizona, Colorado, Idaho, Montana, Nebraska, New Mexico, Nevada, North Dakota, South Dakota, Utah, and Wyoming
||California, Oregon, and Washington
|South Central Region
||Alabama, Arkansas, Kansas, Louisiana, Mississippi, Oklahoma, and Texas