Number Item Description Unit Quantity Rate (US$) Amount (US$) A510.3 Prime Cost item Diversion of water by WASA Sum Assuming that a trench is 1m deep and 150m long has to be excavated in open ground, a new water main (material cost = US$ 50 per m) laid and the trench backfilled. As a representative of the Nominated Sub-contractor WASA:

i. Prepare a method statement and a risk assessment for the prime cost item.

ii. Estimate the cost (amount) of the prime cost item.