Document ID: chunk:federal_register_of_legislation:F2022C00227:reg:21
Version: federal_register_of_legislation:F2022C00227
Segment Type: reg
Provision Reference: reg 21
Character Range: 62953–65150

21  Chemical oxygen demand in influent entering a deep open anaerobic lagoon

       (1) The amount of chemical oxygen demand in influent entering deep open anaerobic lagoon l in a historical period of sampling, CODIn, l (in tonnes), is worked out in accordance with this section.

       (2) For influent that is domestic or commercial wastewater, the amount is equivalent to parameter CODwz calculated under Division 5.3.3 of the NGER (Measurement) Determination, with the following modifications:
          (a) paragraphs 5.28(1)(c) and (2)(c) of that Determination are taken to be omitted;
          (b) if the historical period of sampling is 10 consecutive days—the reference to a monthly basis in section 5.29 of that Determination is taken to be a reference to a daily basis;
          (c) parameter CODwz applies as if:
 (i) a reference to "the sub facility during the year" were a reference to "deep open anaerobic lagoon l for project treatment facility t in the historical period of sampling"; and
 (ii) a reference to "facility operating data" were a reference to "data about the operation of lagoon l".

       (3) For influent that is industrial wastewater, the amount is equivalent to parameter CODw,i calculated under Division 5.4.3 of the NGER (Measurement) Determination, with the following modifications:
          (a) paragraphs 5.45(1)(c) and (2)(c) of that Determination are taken to be omitted;
          (b) if the historical period of sampling is 10 consecutive days—the reference to a monthly basis in section 5.46 of that Determination is taken to be a reference to a daily basis;
          (c) parameter CODw,i (as described in subsection 5.43(2) of the NGER (Measurement) Determination) applies as if:
 (i) a reference to "the plant" were a reference to "deep open anaerobic lagoon l for project treatment facility t in the historical period of sampling"; and
 (ii) a reference to "facility operating data" were a reference to "data about the operation of lagoon l".
       (4) In this section:

       t is a project treatment facility.

       l is a deep open anaerobic lagoon that is part of project treatment facility t and was replaced as part of the project.