Question 1 Below is an item from a Bill of Quantities. Number Item Description Unit Quantity Rate (USS) Amount (USS) A510.3 Prime Cost item - Diversion of water by NWC Sum Assuming that a trench is lm deep and 300m long has to be excavated in open ground, a new water main (material cost = US$ 70 per m) laid and the trench backfilled. As a representative of the Nominated Sub- contractor NWC: i. Prepare a method statement and a risk assessment for the prime cost item. (12 marks) ii. Estimate the cost (amount) of the prime cost item. (8 marks) [20 marks) Question 1 Below is an item from a Bill of Quantities. Number Item Description Unit Quantity Rate (USS) Amount (USS) A510.3 Prime Cost item - Diversion of water by NWC Sum Assuming that a trench is lm deep and 300m long has to be excavated in open ground, a new water main (material cost = US$ 70 per m) laid and the trench backfilled. As a representative of the Nominated Sub- contractor NWC: i. Prepare a method statement and a risk assessment for the prime cost item. (12 marks) ii. Estimate the cost (amount) of the prime cost item. (8 marks) [20 marks)