Since economical and environmental conditions could be positively affected by greater use of natural gas, especially for peak-loading events of power plants, the feasibility of overcoming a major impediment of safe, aboveground storage in heavily populated areas was sought in the work funded by DE-AC26-97FT33203. Principal deterrent to utilizing natural gas to its fullest is the difficulty of onsite storage; principal incentive to utilizing natural gas to its fullest is its clean-burning quality and its relatively low cost.