21Light non-aqueous phase liquid contamination

21 Light non-aqueous phase liquid contamination

(1)  In this regulation –

BTEX means the total concentration of a combination of benzene, toluene, ethylbenzene and xylene;

diesel TPH means the total concentrations of TPH from a diesel source where the carbon number range is between C10 and C14;

diesel TRH means the total concentrations of TRH from a diesel source where the carbon number range is between C10 and C16;

inferred LNAPL means –

(a) groundwater in which one or more of the following contaminant concentrations exist:

(i) benzene at greater than 3 milligrams per litre;

(ii) BTEX from a petrol source at greater than 20 milligrams per litre;

(iii) petrol TPH or petrol TRH at greater than 30 milligrams per litre;

(iv) diesel TPH or diesel TRH at greater than 5 milligrams per litre; or

(b) a substance defined or referred to as an inferred LNAPL in EPA guidelines;

LNAPL means light non-aqueous phase liquid that consists of a petroleum hydrocarbon, or combination of petroleum hydrocarbons, that is not mixed with water and has a specific gravity of less than 1.0;

LNAPL contamination means contamination consisting of inferred LNAPL, LNAPL or a sheen;

petrol TPH means the total concentrations of TPH from a petrol source where the carbon number range is between C6 and C14;

petrol TRH means the total concentrations of TRH from a petrol source where the carbon number range is between C6 and C16;

relevant person, in relation to a storage system, means –