Stripped cargo tank means a cargo tank from which residual cargo has been removed using a stripping system and containing only cargo residues;
energy storage means, in the electricity system, deferring the final use of electricity to a moment later than when it was generated, or the conversion of electrical energy into a form of energy which can be stored, the storing of such energy, and the subsequent reconversion of such energy into electrical energy or use as another energy carrier;
Slug loading means any pollutant, including oxygen demanding pollutants, released in a discharge at a flow rate and/or pollutant concentration as to cause interference in the POTW.
Energy storage system means a system which stores energy and releases it in the same form as was input.
Underground storage means storage of gas in a subsurface stratum or formation of the earth.
trade effluent means any liquid either with or without particles of matter in suspension therein which is wholly or in part produced in the course of any trade or industry carried on at the trade premises, and in relation to any trade premises means any such liquid as aforesaid which is so produced in the course of any trade or industry carried on at those premises, but does not include domestic sewage;
Sewage sludge weight means the weight of sewage sludge, in dry U.S. tons, including admixtures such as liming materials or bulking agents. Monitoring frequencies for sewage sludge parameters are based on the reported sludge weight generated in a calendar year (use the most recent calendar year data when the NPDES permit is up for renewal).
Topsoil means a varying depth (up to 300 mm) of the soil profile irrespective of the fertility, appearance, structure, agricultural potential, fertility and composition of the soil;