Sec. 26.10.02.03-5. Detection of Levels of Concern

A. If the concentrations of gasoline constituents in site groundwater sampling and testing required by this regulation are less than the levels of concern as defined in this chapter, the owner of the UST system shall continue to sample and test in accordance with this chapter.

B. If the concentrations of gasoline constituents in site groundwater sampling and testing required by this chapter are equal to or greater than the levels of concern as defined in Regulation .03B of this chapter, the owner shall:

(1) Report the concentrations to the Department within 24 hours;

(2) Initiate an investigation within 48 hours to determine the impacts to groundwater, both on-site and off-site, in accordance with Regulation .03-4B and COMAR 26.10.08.02-.04; and;

(3) Develop a Corrective Action Plan, as directed by the Department and in accordance with COMAR 26.10.09.07.