In relation to the maintenance of sewerage and stormwater systems:

(1) Are sewers maintained on a regular basis or are they only checked at certain times

(2) How many sewerage spills were there between 1 July 2002 and 30 June 2003;

(3) How many sewers required emergency maintenance between 1 July 2002 and 30 June 2003;

(4) What is the economic service life of sewers in the ACT i.e. when would it be cheaper to replace them rather than maintain them;

(5) How many sewers in the ACT have reached the end of their useful life and in what areas are they located;

(6) What plans do you have to replace those sewers and in what timeframe do you plan to do this;

(7) How many sewers are within five years of being due to be replaced and in what areas are they located;

(8) What plans do you have to replace those sewers and in what timeframe do you plan to do this;

(9) What maintenance program do you have for the stormwater system in the ACT;

(10) What filtering mechanism exists in the stormwater system to stop harmful material getting into the river and lake networks;

(11) At what age does a stormwater drain reach the end of its economic life;

(12) How many stormwater drains in the ACT are approaching the end of their economic life and whereabouts are they located;

(13) What plans do you have to replace these drains and over what timeframe.