Sewer and Drainage Infrastructure Inventory

Sewer and Drainage Infrastructure Inventory

Connections 6632  
Storm Sewers 102.2 km
Sanitary & Combined Sewers 158.8 km
Sanitary & Combined Manholes 2289  
Storm Manholes 1419  
Catchbasins 2413  
Grit Chambers 11  
Sump Manholes 19  
Pipe Type      
PVC Sanitary & Storm 61.9 km
AC Sanitary & Storm 53.9 km
Conc Sanitary & Storm 83.9 km
Vit Sanitary & Storm 26.0 km
Reline Sanitary & Storm 2.2 km
Other Sanitary & Storm 7.6 km    
Unknown Sanitary & Storm 25.4 km
  260.9 km
Pipe Diameter    
150mm and less 20.0 km
200mm 103.7 km
250mm 38.0 km
300mm 35.1 km
350mm 3.8 km
375mm 11.1 km
400mm 3.4 km
450mm 10.5 km
500mm 2.2 km
525mm 2.5 km
600mm 11.0 km
>600mm 13.7 km
mixed & unknown 6.10 km
  261.0 km
     
Sewage Pumpstations 5  
   - Wallace - 2x40 Hp @   gpm,1x10 hp jockey 90 Hp
   - Argyle - 2x140 Hp @ 250l/sec- only one at a time 280 Hp
   - Josephine - 2x20 Hp submersibles 40 Hp
   - Margaret - 2x20 Hp @ 1200 gpm  40 Hp
   - 4th Ave - 2x10 Hp @ 400 gpm, submersibles 20 Hp
     
Storm Liftstation 1  
   - Margaret - 2x 75 Hp @ 20,000gpm 150 Hp
     
Forcemains 8.7 km
Storm Outfalls 112  
Combined Overflows 4  
Flood Gates 25  
Major Culverts > 900mm 52  
Ditches 9 km
     
Sewage Treatment Facility (Lagoon) 1  
     Aeration - 2 x 30HP (splash), 3 x 25 HP self-aspirating,     
                    2 x 75 HP (splash), 2 x 30HP (directional)  =  345 HP
     Capacity (Volume) 80,000 m3
     Average Flow 15,942 m3/day
     Max Flow 52,208 m3/day
     Min Flow 8,216 m3/day
     Permit PE 297 - Flow (Continuous) 34,100 m3/day permit
                             - BOD5 (Monthly)               25mg/l average 2011 70 mg/l permit
                             - TSS (Monthly)                  48mg/l average 2011 70 mg/l permit
                             - DO (Weekly)                     3.3 mg/l average 2011  
     Annual Volume Treated 5,818,926

m3

as of 31/12/2014  

 

 

For more information, please contact
Byron Lloyd
G.I.S. Technician

City Hall, 4850 Argyle Street
Port Alberni BC V9Y 1V8

Telephone: 
250-720-2843