(a) The Secretary shall develop, implement and enforce, and may amend, modify and repeal, a state pretreatment program in compliance with the Federal Water Pollution Control Act, as amended, 33 U.S.C. § 1251 et seq. and regulations promulgated thereunder. In addition to any other authority which the Secretary may exercise for this purpose under this chapter or other chapters of this Code, the Secretary may:

(1) Require any POTW to develop, submit for approval to the Secretary, administer and enforce a POTW pretreatment program;

(2) Review, approve and deny requests for approval of POTW pretreatment programs submitted by a POTW to the Secretary;

(3) Require any POTW, whether or not such POTW is required to develop and enforce a POTW pretreatment program, to develop, submit for approval to the Secretary and enforce specific limits on or prohibitions against discharges of pollutants by industrial users of such POTW to prevent interference with such POTW;

(4) Incorporate conditions into new or existing permits issued to POTWs, such as, but not limited to, compliance schedules, modification clauses, the elements of an approved pretreatment program and specific limits on or prohibitions against discharges by industrial users into such POTW;

(5) Review, approve and deny requests from POTWs required to develop POTW programs to modify categorical pretreatment standards to reflect removals achieved by such POTW;

(6) Require any POTW or industrial user to submit reports, monitor activities and maintain records to assure compliance with this section and regulations hereunder;

(7) Require compliance by industrial users with pretreatment standards, and discharge limits and prohibitions;

(8) Adopt, amend, modify or repeal rules or regulations to effectuate this section and comply with federal laws and regulations respecting pretreatment. Such rules and regulations shall be adopted, after public hearing, in accordance with § 6010 of this title; provided, however, that the Secretary may incorporate into state regulations without a public hearing a categorical pretreatment standard which has previously been promulgated by regulation by the Administrator of the United States Environmental Protection Agency. Prior to incorporating any such categorical pretreatment standard without a public hearing, the Secretary shall comply with §§ 10115, 10116 and 10118 of Title 29.

(b) The Secretary may seek any relief authorized by this chapter against any industrial user even if a POTW has acted or will act to seek such relief.

62 Del. Laws, c. 414, § 4.