Section 1. Maintenance of Standards. Any and all economic benefits which the Employer is obligated to provide are contained in this Agreement. Any such benefits which are not contained in this Agreement cease to exist upon execution of this Agreement, provided the Union has six (6) months from execution of this Agreement to raise any economic benefit inadvertently omitted from this Agreement which existed prior to execution. Should there exist any economic benefits inadvertently omitted, the parties agree to meet to negotiate within ninety (90) days of their exclusion from this Agreement. All other non-economic past practices are extinguished upon execution of this Agreement unless incorporated in this Agreement.