C. Notwithstanding the priority provisions of § 10.1-2129, the Director shall not authorize the distribution of grants from the Fund for purposes other than financing the cost of design and installation of nutrient removal technology at publicly owned treatment works in the Chesapeake Bay watershed until such time as nutrient reductions of regulations, permits, or the Chesapeake Bay TMDL Watershed Implementation Plan are satisfied, unless he finds that there exists in the Fund sufficient funds for substantial and continuing progress in implementation of the reductions established in accordance with regulations, permits, or the Chesapeake Bay TMDL Watershed Implementation Plan within the Chesapeake Bay watershed. In addition to the provisions of § 10.1-2130, all grant agreements related to nutrients shall include: (i) numerical technology-based effluent concentration limitations on nutrient discharges to state waters based upon the technology installed by the facility; (ii) enforceable provisions related to the maintenance of the numerical concentrations that will allow for exceedances of 0.8 mg/L for total nitrogen or no more than 10 percent, whichever is greater, for exceedances of 0.1 mg/L for total phosphorus or no more than 10%, and for exceedances caused by extraordinary conditions; and (iii) recognition of the authority of the Commonwealth to make the Virginia Water Facilities Revolving Fund (§ 62.1-224 et seq.) available to local governments to fund their share of the cost of designing and installing nutrient removal technology based on financial need and subject to availability of revolving loan funds, priority ranking, and revolving loan distribution criteria. If, pursuant to § 10.1-1187.6, the State Water Control Board approves an alternative compliance method to technology-based concentration limitations in Virginia Pollutant Discharge Elimination System permits, the concentration limitations of the grant agreement shall be suspended subject to the terms of such approval. The cost of the design and installation of nutrient removal technology at publicly owned treatment works meeting the nutrient reductions of regulations, permits, or the Chesapeake Bay TMDL Watershed Implementation Plan and incurred prior to the execution of a grant agreement is eligible for reimbursement from the Fund if the grant is made pursuant to an executed agreement consistent with the provisions of this chapter. Subsequent to the implementation of any applicable regulations, permits, or the Chesapeake Bay TMDL Watershed Implementation Plan, the Director may authorize disbursements from the Fund for any water quality restoration, protection, and improvements related to point source pollution that are clearly demonstrated as likely to achieve measurable and specific water quality improvements, including cost effective technologies to reduce loads of total phosphorus, total nitrogen, or nitrogen-containing ammonia in order to meet the requirements of regulations associated with the reduction of ammonia that have not yet been adopted and that are more stringent than regulations adopted by the State Water Control Board as of January 1, 2018. Notwithstanding any provision of this subsection, the Director may, at any time, authorize grants, including grants to institutions of higher education, for technical assistance related to nutrient reduction. Notwithstanding any other provision of this chapter, the Director may at any time authorize grants for the design and installation of wastewater conveyance infrastructure that (a) diverts wastewater from one publicly owned treatment works that is eligible for grant funding under this chapter to another publicly owned treatment works that also is eligible for such funding; (b) diverts wastewater to a receiving treatment works that is capable of achieving compliance with its nutrient reduction or ammonia control discharge requirements and results in a net reduction in total phosphorus, total nitrogen, or nitrogen-containing ammonia discharges; and (c) results in a Water Quality Improvement Grant expense being incurred by the Department that is the same as or lower than the grant expense the Department would incur in funding design and installation of eligible nutrient removal or other applicable treatment technology at such treatment works that would have treated the wastewater in the absence of the diversion project.