For tanks installed before a certain date, what method can be used if capacity requirements are met?

Manual tank gauging is an acceptable method for monitoring USTs that were installed before specific regulatory capacity requirements were established. This process involves using a measuring device to determine the level of product in the tank, which allows operators to track the amount of liquid within the UST.

The use of manual tank gauging is often chosen when other more advanced methods, such as automatic gauging systems, may not have been installed or are not practical for older tanks. This method is particularly suitable when the tank capacity does not exceed certain thresholds, making it a viable option for operators in ensuring compliance with monitoring regulations.

In contrast, automatic gauging systems, although efficient, may not be applicable for older tanks that lack the necessary equipment. Visual inspection, while important for assessing the condition of the tank, does not provide a quantitative measurement of the liquid volume. Cathodic protection monitoring focuses primarily on corrosion prevention and does not directly relate to measuring the contents of the tank. Thus, manual tank gauging serves as a standardized approach to meet the monitoring requirements for these older installations when their capacity criteria are satisfied.