Preparations have included re-seeding the area, top dressing the pitch with 60 tonnes of sand, the application of special fertilisers and cutting the grass to an exact height at least three times a week.
Maryan said: "The Rugby World Cup organising body has visited several times to conduct detailed pitch inspections and the representatives are delighted with how the College pitch is looking. The inspections include 17 different tests with the aim of ensuring our pitches match closely those the players will play on during the tournament."
Eastbourne College Headmaster Simon Davies said: "We decided to bid to be a Rugby World Cup Team Base not just for the benefit of the College but for the benefit of the whole town of Eastbourne. The process involved people from across the town working together and it is incredibly exciting that this hard work has resulted in the South African team being based in Eastbourne and training on our pitches. It is a great privilege."