ENSR ASIA (H.K.) Ltd.
Date of Sample: 9/27/2007 Project: HK-SWC (Operational Phase)
 Parameter \ Composite No. 1 2 3 4 Water Truck (Reference)
Suspended Solids (mg/L) 5 4 3 3 < 2
Nitrite & Nitrate (mg/L) 1.03 1.12 1.13 1.10 1.07
Total Kjeldahl Nitrogen (mg/L) 0.7 0.1 0.2  < 0.1 < 0.1
Total Phosphorus (mg/L) < 0.1 < 0.1 < 0.1 < 0.1 < 0.1
Total Organic Carbon (mg/L) 5 2 2 2 < 1
Chemical Oxygen Demand (mg/L) 19 9 8 9 4
Copper (mg/L) 0.009 0.004 0.003 0.002 0.003
Lead (mg/L) < 0.01 < 0.01 < 0.01 < 0.01 < 0.01
Zinc (mg/L) 0.06 0.03 0.03 0.02 0.03
Remarks -- -- -- -- --