The fuel storage tank shall have a capacity to sustain the operation of the standby generator at its full rated capacity for two days.

The storage tank and the installation shall meet all current EPA and State of Maryland requirements. The use of underground storage tanks shall not be permitted. The storage tank shall be of the dual-wall, sub-base type mounted with the engine/generator set.

If it is determined that an auxiliary fuel storage tank is necessary, the auxiliary fuel storage tank shall be of the aboveground type. The aboveground storage tank shall be encased in a concrete shell and located near the standby generator. The aboveground tank and underground piping shall have secondary containment with a leak monitoring system. The leak monitoring system control panel shall be located in a nearby weatherproof cabinet.

The installation of all fuel storage tanks shall meet the pertinent requirements of EPA, State of Maryland and county regulations. Any inspection and testing required shall be done by the contractor with certificates furnished to the WSSC.

Fuel levels in storage tanks higher than the engine fuel injection valves shall be avoided.