Section 170.610  Initial Abatement Measures and Site Assessment

Unless directed in writing to do otherwise by the Office of the State Fire Marshal, owners or operators shall perform the following abatement measures:

a)         Remove as much of the regulated substance from the UST system as is necessary to prevent further release to the environment;

b)         Visually inspect any aboveground release or exposed belowground release and prevent further migration of the released substance into surrounding soils and groundwater;

c)         Continue to monitor and mitigate any additional fire and safety hazards posed by vapors or free product that have migrated from the UST excavation zone and entered into subsurface structures (such as sewers or basements);

d)         Remedy hazards posed by contaminated soils that are excavated or exposed, as a result of release confirmation, site investigation, abatement or corrective action activities.  If these remedies include treatment or disposal of soils, the owner or operator shall comply with applicable State and local requirements; and

e)         Measure for the presence of a release where contamination is most likely to be present at the UST site, unless the presence and source of the release have been confirmed in accordance with the site assessment required by Section 170.580(b) or the removal site assessment of Section 170.640(a).  In selecting sample types, sample locations and measurement methods, the owner or operator shall consider the nature of the stored substance, the type of backfill, depth to groundwater and other factors as appropriate for identifying the presence and source of the release.  See 35 Ill. Adm. Code 731 and 732.

(Source:  Amended at 19 Ill. Reg. 5467, effective April 1, 1995)