Page 83 - KOP Panborneo Highway Report Card Jan-june 2017
P. 83
environmental monitoring surface water quality - w4
May 2017 June 2017
NWQSM
Parameters Unit
(Class IIB) W4 W4 W4 W4
Upstream Downstream Upstream Downstream
Temperature °C - 26.8 26.6 26.9 26.8
pH - 6.0 – 9.0 6.6 6.7 5.5 5.5
Dissolved Oxygen (DO) mg/l 5 – 7 5.9 5.7 6.7 6.0
Turbidity NTU 50 20 15 140 140
Biochemical Oxygen Demand (BOD) mg/l 3 1.1 1.2 1.6 1.3
Chemical Oxygen Demand (COD) mg/l 25 16 14 13 16
Total Suspended Solids (TSS) mg/l 50 11.4 6.6 102 103
Ammoniacal Nitrogen (A-N) mg/l 0.3 0.28 0.29 0.10 0.30
Oil & Grease mg/l ND 1.3 1.3 2.2 1.9
Heterotrophic Plate Count (HPC) CFU/ml - 1900 1900 200 1900
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