A vault designed exclusively for the commercial geothermal industry, the GeoVault from GHP Systems Inc. is a composite structure of concrete and steel suitable for H-20 highway loads. The inner shell consists of a heavy-duty steel frame and base with steel interior walls/ceiling and a stainless steel floor that are treated with a rubberized rust-resistant coating. The outer shell of the walls and ceiling consists of 8-inch thick reinforced poured concrete. GHP Systems Inc., Card No. 74