Agreement No. CE/59/2015 (EP)
Environmental Team for Tseung Kwan O - Lam Tin Tunnel - Design and Construction
Summary of Groundwater Quality Monitoring Results in September 2019
Date Location Parameters (unit)
pH Dissolved Oxygen (mg/L) Turbidity (NTU) SS (mg/L) BOD5 (mg O2/L) TOC (mg-TOC/L) Total Nitrogen (mg/L) NH3-N (mg NH3-N/L) Total Phosphorus (mg-P/L)
24 Sep 2019 Stream 1 8.3 7.9 1.6 <1.0 <2 2 0.7 0.1 0.04
Stream 2 8.0 7.6 1.1 <1.0 <2 5 0.7 0.07 0.04  
Stream 3 8.0 7.8 1.1 <1.0 <2 3 0.8 0.06 0.05  
26 Sep 2019 Stream 1 8.4 8.0 1.6 <1.0 <2 <1 0.6 0.05 0.04  
Stream 2 8.1 7.7 1.3 <1.0 <2 1 0.6 0.06 0.04  
Stream 3 8.0 7.8 1.1 <1.0 <2 2 0.6 0.05 0.04