sound engineering practice

(2) In this regulation, "sound engineering practice" means the manner by which effluent treatment system is operated where the operational characteristics are maintained within the normal range of values commonly used for the treatment of industrial effluent or mixed effluent.
PU(A) 434/2009 - ENVIRONMENTAL QUALITY (INDUSTRIAL EFFLUENT) REGULATIONS 2009
8. Proper operation of industrial effluent treatment system

sound engineering practice

(2) In this regulation, "sound engineering practice" means the manner by which a leachate treatment system is operated where the operational characteristics are maintained within the normal range of values commonly used for the treatment of leachate.
PU(A) 433/2009 - ENVIRONMENTAL QUALITY (CONTROL OF POLLUTION FROM SOLID WASTE TRANSFER STATION AND LANDFILL) REGULATIONS 2009
10. Proper operation of leachate treatment system

sound engineering practice

(2) In this regulation, "sound engineering practice" means the manner by which sewage treatment system is operated where the operational characteristics are maintained within the normal range of values commonly used for the treatment of sewage.
PU(A) 432/2009 - ENVIRONMENTAL QUALITY (SEWAGE) REGULATIONS 2009
5. Provision and proper operation of sewage treatment system