INGENIEUR
Performance on Water Quality Control
Figure 4.10 : Rock as the energy dissipator located along the swale
The water quality data collection for analysing stormwater quality has been carried out at the Pasir Mas District Police Headquarters ( IPD Pasir Mas ), Kelantan in collaboration with Universiti Malaysia Kelantan ( UMK ) since June 2020 .
Five sampling points , denoted as Points 1 to 5 ( Figures 5.1 and 5.2 ), were established . Sampling Point 1 , located outside of IPD Pasir Mas , was used for water quality comparison purposes . Samples were collected immediately after storm events at Points 1 to 5 .
Seven parameters , namely Biochemical Oxygen Demand ( BOD ), Chemical Oxygen Demand ( COD ), Ammoniacal Nitrogen ( AN ), Dissolved Oxygen ( DO ), DO % saturation , pH and Total Suspended Solid ( TSS ) were tested on stormwater samples taken on November 24 , 2020 at the laboratory of the
( a ) Point 1 ( Water Way ) ( b ) Point 2 ( Perimeter
Swale ) ( c ) Point 3 ( Perimeter
Swale ) ( d ) Point 4 ( Outlet box culvert Swale ) ( e ) Point 5 ( Sub-Surface
Swale )
Figure 5.1 : Layout Plan of Sampling Point
68 VOL 88 OCTOBER-DECEMBER 2021