In Ottawa's case, the gas is removed and used in a cogeneration plant to produce electricity and hot water for plant processes and building heating.

hot water extract prepared from hops.

is bark-free and has been disinfected by an appropriate hot-air or hot water treatment,

- all ruminant bone material which is derived from animals born, reared and slaughtered in category 3 countries or regions is subjected to a process which ensures that all bone material is finely crushed and degreased with hot water and treated with dilute hydrochloric acid (at minimum concentration of 4 % and pH < 1,5) over a period of at least two days, followed by an alkaline treatment of saturated lime solution (pH > 12,5) for a period of at least 20 days with a sterilisation step of 138-140 °C during four seconds or by an equivalent process approved by the Commission after consultation of the appropriate Scientific Committee,

(i) industrial activity shall mean any activity listed under sections C and D of the classification of economic activities in the European Community (NACE rev. 1) as established by Council Regulation (EEC) No 3037/90 (9), with the addition of electricity, gas, steam, and hot water production and the recycling, treatment, destruction or disposal of solid or liquid waste;

As well, techniques that were attempted, like skimming, burning, the use of chemical dispersants and hot water treatments, were ineffective or had damaging side effects.