Specifications include, but are not limited to: The contractor shall provide routine maintenance that can be accomplished during the normal operation of the facility. These routine maintenance items are contained in the facility O&M Manual (Appendix B). Major maintenance items, those requiring specialized equipment, electronic calibration, will be performed by a separate contract. The Contractor may be requested to provide a written estimate to GMU for major maintenance items. the treatment plant discharge within the current VPDES and VDH permit limits. The contractor shall also be responsible for performing calibration and maintenance of the instruments/probes (e.g. pH meter, etc.) and the wastewater treatment plant components (e.g. flow meter, etc.).