Delay of enforcement and establishment— During the 5-year period beginning on the date of enactment of this Act, the Administrator of the Environmental Protection Agency may not—
require a covered treatment works to commence construction on any upgrade of a facility for the purpose of enforcing water quality standards or effluent limitations with regard to nitrogen under section 402 of the Federal Water Pollution Control Act (33 U.S.C. 1342); or
establish any water quality standard or effluent limitation with regard to nitrogen in the Great Bay Estuary under title III of such Act (33 U.S.C. 1311 et seq.).
In general— Not later than 5 years after the date of enactment of this Act, the Administrator shall conduct, and make available to the public the results of, a peer-reviewed study regarding eelgrass levels, and the causes of any loss of eelgrass habitat, in the Great Bay Estuary.
Covered treatment works— The term covered treatment works means a publicly owned treatment works, as that term is defined in section 212 of the Federal Water Pollution Control Act (33 U.S.C. 1292), that contributes nitrogen loadings to the Great Bay Estuary.
Great Bay Estuary— The term Great Bay Estuary means the estuarine zone that extends from the mouth of Portsmouth Harbor, in the vicinity of Portsmouth, New Hampshire, to the head-of-tide for the 8 rivers (including the tributaries of those rivers) that flow into Great Bay, Little Bay, and the Piscataqua River.
Estuarine zone— The term estuarine zone has the meaning given that term in section 320(k) of the Federal Water Pollution Control Act (33 U.S.C. 1330(k)).