Site 5: The Developer cavenants and agrees to contribute $400,000.00 in cash towards the cast of a community facility on this Site, provided that such facility is designed and scheduled tor completion within 2 years of the issuance of a building permit for the 1000th dwell! ing unit within the development and that The facility is of a value equal to or greater than the Developer's contribution; provided that in the event that the City has not substantially completed this facility within the two year period, the contribution shall be refunded without interest,