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Legislative Assembly for the ACT: 1998 Week 10 Hansard (26 November) . . Page.. 3159 ..

On Monday 13 July 1998, ACTEW received a call advising that there was a cross connection in Adams Place. An inspection of the site revealed no obvious surface evidence of a water main leak.

On Tuesday 14 July 1998, maintenance staff spent several hours excavating at several locations along the water main in Adams Place. Eventually a leak was located. It was repaired by 6 pm.

(5) (a) (ii) A maintenance crew responded to a request to clear a blocked sewer main in O'Halloran Circuit. After a discussion with the people at 107 O'Halloran Circuit they were satisfied that the sewer had been successfully repaired.

A maintenance crew was again called to 107 O'Halloran Circuit when sewage overflow was found in a gully trap under shrubs at the rear of the block. Investigation found that the overflow was related to the original problem. It had gone unnoticed by both the residents and the maintenance crew at the time of the repair. The necessary action was taken to clean and disinfect the area immediately. No repairs were needed.

A subsequent call to deal with an overflowing manhole in a nearby lane turned out to be a leaking water service from inside 107 O'Halloran Circuit which needed to be dealt with by a licenced plumber. This was not a water main or sewer problem.

(5) (b) (i) ACTEW notified the Department of Health regarding the incident in Farrer.

(5) (b) (ii) There was no correspondence between the Department of Health and ACTEW regarding the incident at 107 O'Halloran Circuit, Kambah.

(6) The NATA accredited ISO 9002 ACTEW Quality System for Network Services contains work procedures for the maintenance of sewer pipes and water supply mains. ACTEW work crews follow these procedures.

(7) There are no recorded instances of negative pressures in water mains between 30 June 1996 and 30 June 1998.

(8) The sewerage system is constructed in accordance with design guidelines set out in the "ACT Electricity and Water Supply and Sewerage Standards" August 1993. The standards aim to minimise inflow and infiltration to the sewerage system. Design flow formulae in the standards are based on extensive flow gauging records and take into account daily diurnal and peak wet weather flow variations.

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