Sewer and Drainage Infrastructure Inventory

Sewer and Drainage Infrastructure Inventory

Connections6632 
Storm Sewers102.2km
Sanitary & Combined Sewers158.8km
Sanitary & Combined Manholes2289 
Storm Manholes1419 
Catch basins2413 
Grit Chambers11 
Sump Manholes19 
Pipe Type    
PVC Sanitary & Storm61.9km
AC Sanitary & Storm53.9km
Conc Sanitary & Storm83.9km
Vit Sanitary & Storm26.0km
Reline Sanitary & Storm2.2km
Other Sanitary & Storm7.6km    
Unknown Sanitary & Storm25.4km
 260.9km
Pipe Diameter  
150mm and less20.0km
200mm103.7km
250mm38.0km
300mm35.1km
350mm3.8km
375mm11.1km
400mm3.4km
450mm10.5km
500mm2.2km
525mm2.5km
600mm11.0km
>600mm13.7km
mixed & unknown6.10km
 261.0km
   
Sewage Pumpstations5 
   - Wallace - 2x40 Hp @   gpm,1x10 hp jockey90Hp
   - Argyle - 2x140 Hp @ 250l/sec- only one at a time280Hp
   - Josephine - 2x20 Hp submersibles40Hp
   - Margaret - 2x20 Hp @ 1200 gpm 40Hp
   - 4th Ave - 2x10 Hp @ 400 gpm, submersibles20Hp
   
Storm Lift station1 
   - Margaret - 2x 75 Hp @ 20,000gpm150Hp
   
Force mains8.7km
Storm Outfalls112 
Combined Overflows4 
Flood Gates25 
Major Culverts > 900mm52 
Ditches9km
   
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)  = 345HP
     Capacity (Volume)80,000m3
     Average Flow15,942m3/day
     Max Flow52,208m3/day
     Min Flow8,216m3/day
     Permit PE 297 - Flow (Continuous)34,100m3/day permit
                             - BOD5 (Monthly)               25mg/l average 201170mg/l permit
                             - TSS (Monthly)                  48mg/l average 201170mg/l permit
                             - DO (Weekly)                     3.3 mg/l average 2011 
     Annual Volume Treated5,818,926

m3

as of31/12/2014 

 

 

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