A special permit is valid for two years after certification by the Town Clerk, pursuant to MGL c. 40A, § 11, that no appeal is pending. Development must be completed within the two-year time limit unless an extension is granted. Failure to comply with a special permit during development, operation, or use will result in a penalty of $300 for each day of continuing violation, revocation of the permit, or judicial enforcement, pursuant to MGL c. 40A, § 7, as amended.