Caves and their features form when rainwater follows the cracks or joints in the rock material, usually limestone or dolomite. The rainwater combined with carbon dioxide forms a weak acid called carbonic acid. This weak acid once in contact with the limestone begins to dissolve the limestone. This process slowly creates larger and larger crack and joints.
A service contract inventory assists an agency in better understanding how contracted services support the mission and operations and whether the contractorsâ skills are utilized in an appropriate manner.
Contracting Officers will see two changes in GSA e-Library: 1  All professional services available under the GSA Schedules program are now found under the Professional Services Schedule (PSS) program (00CORP).  Currently there are two sets of SINs (C874-1 and 874-1); however, the scope for both SINs is identical.