translate English to French: It is common ground that on 6 October 1999, the date on which the period prescribed in the second reasoned opinion expired, the French authorities were not measuring the 'total coliform‘ parameter.
Il est constant que, au 6 octobre 1999, date de l'expiration du délai imparti par le second avis motivé, les autorités françaises ne mesuraient pas le paramètre «coliformes totaux».