Paragraph 1 Interpretation

In this Code of Practice:–

• “existing WWTW” means WWTW in operation on 22nd April 2006;

• “new WWTW” means any WWTW coming into operation after 22nd April 2006;

• “OIP” means an Odour Improvement Plan containing a systematic evaluation of the sources and causes of odour nuisance and a review of all available control options to develop a plan detailing the proposed measures to mitigate the odour nuisance that reflect the best practicable means for control of odour at the particular WWTW as detailed in paragraph 10;

• “OMP” means an Odour Management Plan, being a core document which is intended to detail operational and control measures appropriate to management and control of odour at the WWTW as detailed in paragraph 6;

• “odour nuisance” means smells and discharges emanating from, or present at, any part of the public sewerage system so as to be prejudicial to health (that is to say, injurious, or likely to cause injury, to health) or a nuisance;

• “p.e.” means “population equivalent” and is a measurement of organic biodegradable load, and a population equivalent of 1 (1 p.e.) is the organic biodegradable load having a five day biochemical oxygen demand (BOD5) of 60g of oxygen per day, the load being calculated on the basis of the maximum average weekly load entering the WWTW during the year, excluding unusual situations such as those due to heavy rain;

• “relevant local authority” means the local authority in whose area the WWTW is located;

• “sewage treatment works” has the same meaning as in section 59(1) of the Sewage (Scotland) Act 1968^f1, but does not include a pumping station except where that station is situated at the same location as other plant, works or equipment at which sewage is subject to physical or biological treatment; and

• “WWTW” (Waste Water Treatment Works) means sewage treatment works which are (either or both)–

  1. (a)

     vested in Scottish Water; or

  2. (b)

     used by Scottish Water (or a person acting on its behalf or under its authority) in connection with the exercise of Scottish Water’s core functions as respects the provision of sewerage or disposal of sewage.