Document ID: chunk:federal_register_of_legislation:F2024C00760:reg:80:p8
Version: federal_register_of_legislation:F2024C00760
Segment Type: reg
Provision Reference: reg 80 (pt 8/9)
Character Range: 598886–601661

HEW contribution (referred to in this Schedule as the "net effect") represents an increase or a decrease of more than 5% of the total surface water SDL for the Basin water resources as it stood at the reference time. The total surface water SDL for the Basin water resources as it stood at the reference time is equal to 10,873 GL per year, and 5% of that amount is equal to 543 GL per year (when rounded down).
      On the basis of the supply measures and efficiency measures that were notified to the Authority by 30 June 2017 and any additional efficiency measures notified under section 7.12 or additional HEW entitlements specified under section 7.08B, the net effect will not represent a decrease of more than 5% of this amount. Accordingly, the formula set out in this Schedule provides for a reduction only of the supply contribution for affected units, and not of the efficiency contributions and additional HEW contributions.
      As efficiency contributions and additional HEW contributions are expected to vary over time, the net effect is also expected to vary. Section S6A.04 sets out how to assess the magnitude of the net effect.
      Net effect greater than 543 GL per year
      For water accounting periods for which the net effect exceeds 543 GL per year, SDL adjustment amounts are calculated in accordance with section S6A.05 of this Schedule. For such water accounting periods, the formula additionally reflects the operation of the overall limit on adjustments in section 7.19.
      Net effect no greater than 543 GL per year
      If, however, for a particular water accounting period, the net effect does not exceed 543 GL per year, the SDL adjustment amount for each surface water SDL resource unit is instead calculated in accordance with section S6A.06 of this Schedule.
      In both cases, the adjustments are expressed in the form of a formula as a function of time, changing at specified times (namely, at the beginning of each water accounting period), that reflects the changes to the efficiency contributions and additional HEW contributions over time.

S6A.02  Interpretation
 (1) In this Schedule:
apportioned supply contribution, for a particular surface water SDL resource unit, means:
 (a) for a surface water SDL resource unit listed in the table to subsection (2)—the amount, in GL per year, indicated in the table; and
 (b) otherwise—zero.
Note 1: The apportioned supply contribution for a surface water SDL resource unit is the amount of the total supply contribution, worked out in accordance with sections 7.15 and 7.17, that was apportioned to the surface water SDL resource unit in accordance with section 7.18, disregarding the effect (if any) of section 7.19.
Note 2: The apportioned supply contribution for each surface