12. The beneficiary shall mow the whole cover of any access route at least once between 1st October in each year and 31st March in the following year, unless he permits grazing of that cover within the period specified in Article 3(4) of Commission Regulation (EC) No. 762/94, namely 1st September to 14th January inclusive in each year, and shall maintain the cover of each such access route to a maximum height of 15 centimetres over a minimum width of 3 metres from 1st May to 31st October inclusive in each year.