There is a scale problem in the original policy initiative as 1 megalitre equals 1,000,000 litres. BizOps has 150 retail outlets and it is a better outcome to have rainwater collection facilities at each location rather than one large tank at the head office. The rainwater is intended for use in flushing toilets. Data indicates that the average employee will use 30 litres of water per day in flushing toilets. The typical BizOps location has approximately 30 employees. The cost of installing a rainwater tank is estimated to be $1,000 per 5,000 litres. The amount of available space at each location to install a rainwater tank is 10 metres x 10 metres. The average rainfall at each location is 700 millimetres per year. The average roof collection area for rainwater at each location is 2000 square metres. Mains water is supplied to BizOps facilities at an average cost of $2 per 1,000 litres. Replacement of old toilets with new water-efficient models can reduce water consumption by approximately 50 per cent. Installation of new water-efficient toilets can be achieved for approximately $15,000 at each BizOps location. Prepare a revised water-saving strategy for inclusion in the BizOps sustainability policy. Justify the revised strategy based on calculations and consideration of other water saving options