Table 1 List of Defects in Sewer Network in District 1 Defect ID Location Defect Details of S Pipe Manhole Dia Material Depth On/off Road Length Depth Size 1-01 Madampitiya Road Opposite Modara Police Statio Pipe Corrosion (Crest 1100 mm DI 2 m center 20 m 1-02 Along Dilasal Street at Muthuwalla Junciton Pipe Corrosion 1500 mm Concrete 3 m off road 60 m 1-03 Along St Andrew's Road at Muthuwalla Mawatha Pipe Corrosion 600 mm DI 1-04 Over Flow 1-05 Opposite CMC Community Center Over Flow 1-06 S.D. Fernando Mw and Aluth Mawatha Junction 7-Jan Infront of Rock house Army Camp Pipe Corrosion 600 mm DI Description of Defect LINE Collapse of pumping main Collapse of pumping main Collapse of pumping main From Aluth Mawatha, Eli Lane Junction to K. Cecil Perera Mawatha Manhole Overflow due to public encroach of the gravity sewer Manhole Overflow due to public encroach of the gravity sewer Frequantly cleanning Downstream catchment has enclosed by the public. Therefore cleanning of the system was unable to continue Collapse of pumping main ( Habour)
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Table 1 : List of Defects in Sewer Network in District 1
Defect ID Location Defect
Details of Sewer Assets involved
Pipe Manhole
Dia Material Depth On/off Road Length Depth Size On/off Road Type Size
Length Depth Size Depth On/off Road Type Size On/off Road Dia Length Outlet
1.5 x 2 concrete 15 ft
386 m 1.5 x 2 concrete 15 ft
50 m 1.5 x 2 concrete 20 ft
104 m 1.5 x 2 concrete 20 ft
263 m
331 m
439 m
313 m
801 m
Inside the Manning Market
Inside the Manning Market
Side of the road
Side of the road
Possible Remedial Mesures
Investigation
High High
Low Low
shifting of unathorised stalls
Low Low
shifting of unathorised stalls
High high Need to rehabilitate
High High
High High
High High
Severity of Environmental Impacts
Severity of Social Impacts
Obtain enough space to access to manholes
Table 3 : List of Defects in Sewer Network in District 2B
Defect ID Location Defect
Details of Sewer Assets involved
Pipe
Dia Material Depth On/off Road
2B-01 Hudson Road damage line Pipe Faliure 9 " CLAY 12 ' On Road2B-02 ST Michical RoadST Michical Road damage line Pipe Faliure 9 " CLAY 12 ' On Road2B-03 ARMY HEAD QUTERS damage line
9 " CLAY 12 ' On Road
2B-04 WEKANDHA ROAD damage line Pipe Faliure 9 " CLAY 10 ' 0FF ROAD2B-05 60 PARK STREET60 PARK STREET60 PARK STREET damage line Pipe Faliure 9 " CLAY 15 ' ON ROAD2B-06 DEWANAMPIYATHISSA MAWATHA damage line Line blocakage 9 " CLAY 12 '2B-07 JUMMA MASJID damage line
9 " CLAY15 '
2B-08 SRI SADARMA MAWATHA DAMAGE MANHOLE Pipe Faliure 9 " CLAY 14 '2B-09 DEMATAGODA ROAD DAMAGE LINE 9 " CLAY 15 '2B-10 DEMATAGODA ROAD DAMAGE LINE 9 " CLAY 15 '2B-11 DEMATAGODA ROAD DAMAGE LINE 9 " CLAY 16 '2B-12 DEMATAGODA ROAD DAMAGE LINE 9 " CLAY 14 '2B-13 DEMATAGODA ROAD DAMAGE LINE 9 " CLAY 20 '2B-14 DEMATAGODA ROAD DAMAGE LINE 24 " CLAY 20 '2B-15 PANCHIKAWATHA ROAD DAMAGE LINE 9 " CLAY 12 ' 2B-16 PANCHIKAWATHA ROAD DAMAGE LINE 9 " CLAY 12 '