In this section, “watershed implementation plan” has the meaning stated in § 8–2A–01 of the Natural Resources Article. The following may count toward a nitrogen load reduction identified in the State’s or a local jurisdiction’s watershed implementation plan: A reduction in nitrogen from upgrading an on–site sewage disposal system to the best available technology for the removal of nitrogen if the operation and maintenance for the on–site sewage disposal system is current; and A reduction in nitrogen from pumping out an on–site sewage disposal system that is subject to a local jurisdiction’s septic stewardship plan if the local jurisdiction’s septic stewardship plan meets the requirements under § 9–1605.2(h)(8)(iii)2 of this title.