COGENERACIÓ ELÈCTRICA DE LA RIBERA DE L'EBRE, A.I.E.

(Translated from original letter)

Flix (Tarragona), 10th October 1996

Dear Sir,

We are very pleased to address this letter to you, per your request, to confirm that during the period of time when we have been using your fuel oil additives "rb bertomeu" in our Flix power plant, equipped with four (4) Deutz BV16M640 engines of 6.360 Kw each one, we have noted the following benefits:

*               Absence of corrosion in the engines' exhaust valves.

*               Absence of relevant compation in exhaust valves, exhaust nozzles and turbo compressors.

*               Water decantation and separation is favoured in the storage tanks.

*               Very small presence of sludge in the fuel oil filters.

Likewise, we want to express our satisfaction for the gas analytics service that you have been providing us, as well as your cooperation in the fuel oil analysis and statistical documentantion about the plants' performance parameters.

We authorise the use of this letter for references purposes.