Above & Underground Storage Tank Services



The purpose of our UST Removal Services is to complete the proper removal of a UST and to document the environmental conditions of the soil and groundwater, if encountered, as well as:

  • To uncover the UST and gauge the UST for liquids.

  • To pump out and remove any waste oil/water in the UST.

  • To properly open and clean the UST, and to conduct all field activities under a health and safety plan as required by OSHA 29 CFR 1910.120

  • To determine the absence or presence of any lost, petroleum-based, hydrocarbons in soil and/or groundwater in proximity to the UST location

  • To document all field activities relevant to the excavation, including photo-documentation

  • To conduct field screening of the soils for fugitive hydrocarbons using a photoionization detector

  • To prepare a completion report for the customer summarizing the above tasks relating to the proper closure of the UST

If field conditions verify that the excavation would affect any surrounding foundations or service lines, the UST may be abandoned in-place by using an approved, State method.

Our proposed workplans typically consist of the following tasks:

  1. Liaison with the Customer and the State, if the UST is regulated: Certain procedures and numerous field protocols must be followed prior to, and during UST removal and disposal.

  2. Dig-Safe Survey: To mark the locations of all underground utilities. The operator, prior to excavation, will conduct a walk-through of the Site. The owner’s representative will assist in determining the presence of any underground obstructions or utilities such as telephone, sewer and water lines, which Dig-Safe does not mark out.

  3. Environmental Field Services: On-site inspection during the UST removals including:

    • Compliance with a required, site-specific Health and Safety Plan.

    • Field screening of soils using a Photoionization Detector (PID) calibrated for the detection of petroleum hydrocarbons.

    • Use of an Explosimeter to determine LEL/oxygen levels inside the UST, if necessary. We will conduct the required procedures necessary to displace any explosive vapors in the tanks before we enter the tank and clean the interior of sludge.

    • Disposal of tank-generated wastes that exist in the tanks, which will require removal, storage and labeling.

    • Collection of confirmatory soil samples from the walls and floor of the excavation may be necessary. This task is dependent upon the results of the field screening of soil with the PID and the depth of groundwater (if any) in the UST excavation.

  4. Completion of a UST Closure Report as per State guidelines for UST closures, which summarizes all of the field activities and soil/groundwater results as well as the physical condition of the UST, final disposal location of the tank and its wastes, and groundwater conditions, if encountered.